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WO2012139656A1 - Réseau de distribution d'énergie et procédé d'exploitation de ce réseau - Google Patents

Réseau de distribution d'énergie et procédé d'exploitation de ce réseau Download PDF

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Publication number
WO2012139656A1
WO2012139656A1 PCT/EP2011/056016 EP2011056016W WO2012139656A1 WO 2012139656 A1 WO2012139656 A1 WO 2012139656A1 EP 2011056016 W EP2011056016 W EP 2011056016W WO 2012139656 A1 WO2012139656 A1 WO 2012139656A1
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WO
WIPO (PCT)
Prior art keywords
energy
distribution network
network
central device
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2011/056016
Other languages
German (de)
English (en)
Inventor
Jaroslaw Kussyk
Johann Lichtnekert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to PCT/EP2011/056016 priority Critical patent/WO2012139656A1/fr
Publication of WO2012139656A1 publication Critical patent/WO2012139656A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge

Definitions

  • the invention relates to a method for operating a
  • the invention also relates to a central facility for monitoring an electrical power distribution network and a Ener ⁇ gieverteilozo with such central facility.
  • a central facility for monitoring an electrical power distribution network for example, by photovoltaic systems or small combined heat and power plants, especially in private households
  • the type of use of the distribution networks of a centralized power distribution from one or more transformer stations in the direction of energy consumers
  • a decentralized at least temporarily Electricity distribution eg from a household to other households or from several private energy producers in the direction of the transformer station or into the medium-voltage grid.
  • Electricity distribution eg from a household to other households or from several private energy producers in the direction of the transformer station or into the medium-voltage grid.
  • the invention has for its object to provide a method for operating a power distribution network, which can ensure ro ⁇ busten and safe operation.
  • a method of the type mentioned in which by means of the central device a topology of the distribution network is monitored and arranged at a detected change in the topology of the distribution network, the electrical energy supply at least ei ⁇ ner in one affected by the topology change distribution network area Energy delivery device is increased in the affected distribution network area of the energy distribution network by the central device, reduced or stopped.
  • An essential advantage of the method according to the invention is, for example, that allows an adaptive operation of the power distribution network by the respective Be ⁇ operating state of the at least one energy delivery device dynamically adapted to the particular network topology.
  • Un ⁇ ter the topology structure of the Energyver ⁇ subnet is on the one hand understood with connected network subscribers in the form of energy delivery devices and energy consumption devices.
  • a topology change arises, for example, when new energy consumption devices and / or delivery devices are connected to the energy distribution network or existing energy consumption devices and / or delivery devices are disconnected (temporarily or permanently) from the energy distribution network.
  • a change in the cable routing is also considered a topology change.
  • Such switching devices for example, power circuit breakers, disconnectors and / or maintenance switches, which can be automated or manually opened or closed and so the interconnection of individual power lines of the distribution network - and thus the electric energy flow in the Ver ⁇ subnet - influence.
  • the central device controls the supply of electrical energy by the energy delivery device in such a way that network instability, eg due to excessively high energy consumption, is prevented
  • An advantageous embodiment of the method according to the invention provides that by means of the central device also an utilization of power supply lines in individual distribution network areas is monitored, the utilization being indicated by a current flowing in the respective power supply line and / or voltage applied to the respective power supply line voltage, and also at a utilization of a power supply line in a distribution network area above a permissible maximum utilization, the electrical energy supply of at least one arranged in the distribution network area energy delivery device in the distribution network area is reduced or stopped by the central device.
  • the energy distribution network is, as it were, transferred to a "safe" state, in which the energy supply of the energy delivery devices located in the affected distribution network area is reduced. This avoids being too much uncontrolled
  • Energy is fed into the energy distribution network and this gets into an unstable state.
  • the utilization situation can be determined, for example, by measuring a current flowing in the respective energy supply line and / or a voltage applied thereto, which is related to a maximum permitted current and / or a maximum permitted voltage on the energy supply. be set. Furthermore, the utilization situation may also affect the voltage quality and the characteristics of the mains voltage, so particular voltage ⁇ fluctuations, dips, interruptions in, -flicker and -oberschwing12.
  • the load is indicated by a current flowing in the respective power supply line current and / or voltage applied to the respective power supply line , And even with a utilization of a power supply line in a distribution network area, which is below a minimum load, the electrical energy input of at least one disposed in the distribution network area energy delivery device is increased in the distribution network area by the central device. In this way it can be avoided that some dispensing ⁇ network areas have too low a load, possibly a too high load situation is generated in other areas of distribution. Uniform possible utilization or a maximum possible energy supply in all distributing ⁇ network areas can be practically achieved in the manner described.
  • the degree of utilization can be determined, for example, recognized by measuring a current flowing in the respective power supply line current and / or voltage applied thereto, on the one ER- minimal in relation to a part of the network operators ⁇ bers predetermined minimum current and / or allowed to put voltage on the power supply line.
  • the energy delivery devices may, for example, be energy production devices or energy storage devices.
  • the secondary of a transformer such as a feeding into the power distribution grid electrical power medium voltage transformers ⁇ tors, considered as energy generating means.
  • the central facility can supply the electrical energy of the at least one energy generation device arranged in the relevant distribution network area entirely or Directs part in the energy storage device and caches there.
  • the central device switches on the switchable energy consumption device and consumes all or part of the electrical energy of the energy generation device with the energy consumption device , This can be a useful measure, for example, to reduce the voltage in the event of excessive voltage in a distribution network area.
  • a further advantageous embodiment of the method according to the invention also provides that when detected change the topology of the distribution network area and / or a Auslas ⁇ tion of a power supply line in the relevant distribution network area, which is above a maximum permissible ⁇ tion or below a minimum load of the energy supply line, the central device and the electrical energy supply at least one energy delivery device in another distribution network area, the is different, increases, reduces or stops from the relevant distribution network area.
  • the central device can not only act on the distribution network area affected by the topology change and / or the high or low utilization, but also carry out suitable measures in other distribution network areas which are suitable for stabilizing the entire energy distribution network. This may, for example, also affect the influencing of a generator or transformer feeding into the other distribution network area.
  • the energy distribution is converted into a "safe" condition in which the energy supply to the energy delivery means, the from the central facility is not or only poorly accessible, is driven back. This avoids that uncontrolled too much energy is fed into the energy distribution network and this gets into an unstable state.
  • the control means concerned may accession game, the power generation of the associated with them energy generating means reduce or throttle.
  • the control devices affected by a communication failure can also redirect the energy of the energy generating devices associated with them in whole or in part into allocated energy storage devices and buffer them there.
  • the central device at a recognized interruption of the communication link or a drop in the transmission quality falls below the predetermined minimum quality value, the electric Energyein ⁇ supply at least one energy delivery device in a other distribution range which is different from the respective distribution area is increased, reduced or stopped and / or throttles, the electric power receiving means connected to the walls ⁇ ren distribution area Energyvvisseinrich- tung or off.
  • the central facility can take appropriate measures to positively influence network stability. This can be done, for example, by selectively influencing the energy supply of another energy delivery device in another distribution network area for which no communication disturbance has been detected, or by deliberate discarding or connecting electrical loads. However, care must be taken, for example by monitoring a mains voltage and / or a current load of the power supply lines, that these measures themselves have no negative effects on the grid stability.
  • a further advantageous embodiment of the invention shown SEN method provides that abgren ⁇ collapsing current measuring devices is selected to monitor the topology of the distribution network, a group of at least two an Ver ⁇ subnet range of the distribution network such electrically that the defined distribution area is free of electrical loads and sources , wherein the current measuring devices are in communication with the central device, with the
  • topology monitoring can be carried out automatically, for example computer-aided, and for this purpose only current-measuring devices must be arranged at suitable locations in the energy distribution network.
  • an automated evaluation of the current measured values of the existing current devices can determine which subgroups of the current measuring devices electrically delimit a load and source-free section of the energy distribution network, even without them previous knowledge of the internal structure and the internal interconnection of the energy distribution network.
  • the topology ⁇ change information can therefore be subsequently formed solely on the basis of the current measured values. In other words, a topology monitoring without previous knowledge is mög ⁇ Lich.
  • topologies gie Sung easy to detect exceeds namely the current sum of a previously source and load-free portion of the power distribution network later in magnitude the predetermined threshold, so it is clear that there has been a change in the topology and corresponding to a Topologieän ⁇ tion information must be generated.
  • a topology change can be caused, for example, by the fact that a current is fed into a previously load and source-free section or a current is drawn from a previously load and source-free section; such Topologieän- modification may for example be effected by a half within the previously source- and load-free section vorhande ⁇ ner open disconnect switch - is closed and thus made an additional current flow is light ⁇ - for any reason whatsoever.
  • the above-mentioned object is also achieved by a central device for monitoring an electrical energy distribution network, which is set up to carry out a method according to one of claims 1 to 10. Furthermore, the object is also achieved by an electric Ener ⁇ gieverteilozo with a plurality of network participants which include at least one energy dispensing device, which has a standing with the network subscribers in a uni- or bidirectional communication link Central device according to claim. 11
  • the energy delivery device is an energy generating device and / or an energy storage device.
  • the energy distribution network has at least one switchable energy consumption device.
  • the energy distribution network is a low-voltage distribution network.
  • an advantageous embodiment of the power distribution network according to the invention may provide that comprising energy ⁇ distribution at least two distribution areas, which are being electrically separated from at least two current measuring devices that the respective distinct dispensing ⁇ network area is free of electrical loads and sources, and the current measuring devices with the Central device in communication connection.
  • FIG. 1 shows an exemplary embodiment of an energy distribution network, by means of which the method according to the invention is also explained by way of example;
  • FIG. 2 shows a subnetwork of the energy distribution network according to FIG. 1 in greater detail
  • FIG. 3 shows the energy distribution network according to FIG. 1 after two switches have been switched over
  • a distribution network 10 comprises a power transformer 11 with a transformer! insurance IIa, a busbar 18 with ge ⁇ closed in the Figure 1 switching devices 12a and 12b as well as distribution strands 13a (between points A and C), 13b (between points b and c) and 13 c (between points c and d).
  • the network strands together with all the associated elements are shown as a line bundle intended to symbolize phase lines LI to L3 and the neutral conductor.
  • Distribution network participants are connected to the distribution network 10 by means of energy meters 14a to 14h.
  • the network strand 13c is connected to the strand 13a by means of a closed switching device 12c.
  • a switching device 12d is opened so that the net strands 13b and 13c are separated from each other.
  • current measuring devices 15a to 15e are installed in the distribution network 10, which narrow down the distribution network topology into three distribution network areas.
  • the distribution network subscribers are, for example, energy delivery devices in the form of energy generation devices 16d, 16g and 16h and energy storage devices 16a, 16e, 16f and energy consumption devices 16b and 16c.
  • a local control device (not explicitly shown in FIG. 1) is integrated in each case.
  • the local control devices have the task of locally controlling the respective assigned energy generating device 16d, 16g and 16h or energy storage device 16a, 16e, 16f.
  • An integration of the control devices in the energy generating devices 16d, 16g and 16h or in the energy storage devices 16a, 16e, 16f is to be understood here only as an example.
  • the controllers may also be separate devices separate from the one or more power generators 16d, 16g and 16h to be controlled and energy storage devices 16a, 16e, 16f, respectively. It is also possible that one or more control devices in each case one or more Energyer Wegungseinrichtun- gen 16d, 16g and 16h, one or more energy storage devices 16a, 16e, 16f and / or one or more energy ⁇ appliances are assigned to 16b and 16c.
  • the unidirectional or bidirectional communication connections which are not shown in greater detail in FIG. 1 for reasons of clarity, are connected to a central device 17 for network guidance.
  • the central device 17 is located, for example, in the current measuring device 15c.
  • the measurement data of the current measuring devices 15a to 15e reach the central device 17, which evaluates the measured data and centrally performs the control of the energy generating devices 16d, 16g and 16h and of the energy storage devices 16a, 16e, 16f.
  • the central device 17 controls the local control devices which are assigned to the energy-generating devices 16d, 16g and 16h and to the energy storage devices 16a, 16e, 16f.
  • the control signals ⁇ transmitted to the central device 17 via the aforementioned communication links. In this way can The central device 17, the energy flow in the network strands 13 a, 13 b and 13 c separated by a targeted increase or decrease the power generation in individual network areas and if necessary by a temporary energy storage control.
  • the topology of the distribution network 10 is monitored by means of the central device 17.
  • the electrical energy supply at least ei ⁇ ner arranged in an affected by the topology change distribution network area energy delivery device, ie one of the power generation devices 16d, 16g, 16h and / or one of the energy storage devices 16a, 16e, 16f in the affected Distribution network area of the energy distribution network 10 is increased by the central device 17, reduced or stopped.
  • the central device 17 sends to the control devices at least one of the energy delivery devices (power generation devices 16g, 16h and / or energy storage device 16f) present in this network trunk 13c a control signal which has an influence on the causes the respective energy delivery device in the network strand 13c subsequent energy supply.
  • the energy delivery devices power generation devices 16g, 16h and / or energy storage device 16f
  • An essential advantage of this mode of operation consists in ⁇ play that hereby an adaptive operation of the power distribution network is made possible 10 by the respective operating state of the at least one energy dispensing device is dynamically adapted to the network topology.
  • Under the topology structure of the energy distribution network on the one hand ⁇ understood with connected network subscribers in the form of energy delivery devices and energy consumption devices.
  • a topology change arises, for example, when new energy consumption devices and / or delivery devices are connected to the energy distribution network or existing energy consumption devices and / or delivery devices are disconnected (temporarily or permanently) from the energy distribution network.
  • a change in the wiring is considered a topology change.
  • the topology of the distribution network should also be understood to mean the respective switching states of switching devices provided in the distribution network.
  • switching devices include, for example, circuit breakers, circuit breakers and / or maintenance switches that can be opened or closed automatically or manually and thus influence the interconnection of individual network sections of the distribution network - and thus the electrical energy flow in the distribution network.
  • the central device controls in a detected topology change the supply of electrical energy by the energy delivery device so that a network instability, eg by excessive current flows in ei ⁇ ner remaining after the disconnection of a first power supply line second power supply line avoided.
  • the current measuring devices 15a and 15b each comprise a device 21 for detecting and processing of Streaming and a communication device 22 which is connected to and communicates with phase conductors LI, L2 and L3 and / or the neutral conductor N of the network strand 13a.
  • the energy meters 14a and 14b each include a device 23, which also performs a detection and processing of currents of individual power lines in addition to the actual energy metering.
  • the energy meters 14a, 14b also comprise communication devices 22.
  • Both the energy meters 14a and 14b and the current measuring device 15b communicate with the current measuring device 15a, in particular with a central device 17 which is contained in the current measuring device 15a and monitors inter alia the network line 13a , The monitoring of the currents in the distribution network line 13a takes place in successive measuring cycles, which are initiated by the central device 17.
  • the central device 17 sends to all devices 21, 23 either directly, as in the current measuring device 15a, or via the communication devices 22 using a PLC (Power Line Communication) method
  • a recognition can be carried out, whether that of the participating current measuring devices 15a, 15b and energy meters 14a, 14b delimited area is load and source free, so whether at no other point active current in the area or flows out of this. Namely, if the active current sum formed in each case from all active current values of a phase conductor magnitude does not exceed ei ⁇ NEN threshold value - that is close to zero - is detected 14a and 14b completely delimited load and source-free region A of the current measuring devices 15a and 15b and the energy meters.
  • the monitoring of the mains lines 13b and 13c by the current measuring devices 15c and 15d and the energy meters 14c to 14e and by the current measuring device 15e and the energy counter 14f to 14h From the transmitted effective current mean values, it can be determined in the central device 17, for example, how the instantaneous switching state of the switching devices 12c and 12d and the current network configuration / topology are. Thus, it can be determined whether the network strand 13c is connected to the network strand 13a or to the network strand 13b or both, and how the flow of current is divided between said network regions.
  • topology information about the electrical energy distribution network can be obtained by selecting a group of at least two current measuring devices arranged at different points of the energy distribution network, with the current measuring devices respectively measuring the current to form a current measured value, taking the current measured values into consideration Current flow direction are added to form a current sum and a topology information is formed, indicating that the current measuring devices elekt ⁇ cally delimit a load and source-free section of the low-voltage distribution network when the current sum a predetermined Threshold falls below.
  • Such topology information as areas recognized as free of load and sources can then be used, for example, in a network control center to obtain a topology image.
  • the central device forms a topology change information.
  • a change in topology is recognized, for example, in the case shown in FIG. 1 during the transition from the case shown in FIG. 1:
  • the central device 17 recognizes a change in the switching states of the switching devices 12c and 12d.
  • Switching device 12c is opened, while switching device 12d transitions to the closed state, so that network strand 13c is now connected to network strand 13b instead of to network strand 13a. Accordingly 17 generates the Moneinrich ⁇ tung a topology change information, in the presence of which in the manner described above that the effects on in the network strand 13c energy delivery means ER- follows.
  • the current measuring devices 15a - 15e can be installed in at least part of a power distribution network on those network sites that are especially important for monitoring the topological characteristics of the power distribution network and / or the distributing ⁇ network range, such as network ⁇ line feeders -gabelept, and nodes, -separators and similar components, and at least one common power line (phase or neutral) are connected.
  • Synchronous detection of the associated currents as well as other parameters relevant to the distribution of the electrical energy can be carried out in the system continuously as required, sporadically or randomly once or several times over a limited period of time.
  • the control of the synchronous detection in the system is preferably either timed (eg, beginning at every full hour) or by command from a leading current monitor or one of the other devices.
  • the internal time references / clocks in the current measuring devices are preferably synchronized beforehand, preferably remotely or locally.
  • some current measuring devices may belong to a plurality of current balance groups and / or multiple network separation points. In that case, for example, special attention may be paid to the direction of current flow in such a current monitor, which may be different for neighboring balance groups.
  • the at least one central device 17 described above can also be a partial functionality of a current measuring device.
  • a current measuring device may also include the functionality of several of the previously described current measuring devices.
  • the functionality described above, a current measuring ⁇ device and / or a further device can also serve as a partial functionality of a power meter, a voltage quality measuring instrument, a data concentrator or egg ⁇ nes automation device can be realized.
  • the distribution network can serve itself or a separate communication network.
  • an automatic monitoring of the topology of an electrical power distribution network in particular its switching states and changes in the topology of individual distribution network areas / sections, by the use of the current measuring devices possible.
  • These can be placed in a distribution network so that an exact knowledge of the network topology is not necessary and only a relatively coarse structure of the network topology, such as Netzlei ⁇ tion strands between the important network nodes / disconnectors and their switching state, at least in the monitored Netzbe ⁇ rich known is.
  • Such network areas / sections may be considered "whole" in terms of incoming, outgoing and flowing
  • the central device 17 could send an alarm message to the point in which the network is operating in order to signal that the network section has the strand 13c is no longer to be supplied via the strand 13a, but better over the strand 13b. This can be done by opening the switching device 12c and a
  • the detection of an excessive load in the network strand 13a can also lead to an influence on the present in this network strand energy delivery devices in the manner described above.
  • too low utilization of a distribution network area eg network line 13a
  • an increase in the supply of electrical energy by the energy delivery devices in the corresponding distribution network area can be initiated by the central device 17.
  • a synchronous detection of the streams and the subsequent Ana ⁇ analysis of the currents and their budgets thus permit monitoring of the transport capacity of individual distribution ranges to a sufficient supply voltage quality and a Secure distribution network operation, especially in many distributed ⁇ energy generators secure.
  • the current measuring devices 15a - also 15e the possibility of a voltage detecting and processing, so in addition to monitor the voltage level of the voltage ⁇ quality or the characteristics of the mains voltage, particularly the voltage fluctuations, dips, outages, -flicker, - harmonics, among other things, paired with the monitoring of the distribution network topology and / or the current distribution, in particular of the active and / or reactive currents in the at least one central device and / or the further system (eg a distribution network management system).
  • a voltage detecting and processing so in addition to monitor the voltage level of the voltage ⁇ quality or the characteristics of the mains voltage, particularly the voltage fluctuations, dips, outages, -flicker, - harmonics, among other things, paired with the monitoring of the distribution network topology and / or the current distribution, in particular of the active and / or reactive currents in the at least one central device and / or the further system (eg a distribution network management system).
  • the power transport capability of the distribution or its vulnerability by the Power Quality features distribution areas / sections or individual network ⁇ lines are analyzed and evaluated, in particular at elevated current load of Tar ⁇ excluded, if necessary measures for the protection of the distribution to take (such as a temporary load reduction in the network or a sustainable expansion of under-dimensioned power lines). Accordingly, in the case of a too high or too low voltage-related utilization of a distribution network area, the central facility can take appropriate measures to influence the energy delivery facilities.
  • a utilization of power supply lines in individual distribution network areas is monitored by means of the central device 17, wherein the utilization is controlled by a current flowing in the respective energy supply line and / or a voltage applied to the respective power supply line voltage is specified.
  • the electrical energy supply of at least one disposed in the distribution network area energy delivery device in the distribution network area is reduced or stopped by the central device 17.
  • the central device 17 can dynamically adjust in such a case in the distribution area, which is affected by the excessive workload so that subsequently a reduction or Switching off the energy supply of the at least one energy delivery device takes place in order to reduce the utilization of the relevant power supply line.
  • the energy distribution network is, as it were, transferred to a "safe" state, in which the energy supply of the energy delivery devices located in the affected distribution network area is reduced.
  • the utilization situation can be determined here, for example, by measuring a current flowing in the respective power supply line and / or a voltage applied thereto, which are set in relation to a maximum allowable current and / or a maximum allowable voltage on the power supply line.
  • the central device For a utilization of a power supply line in a distribution network area, which is below a minimum utilization is, 17 increases, the central device, the electrical Ener ⁇ gieeinspeisung at least one in the respective distribution region arranged energy delivery means in the distribution area. Possibly resulting in other distribution areas, too high load situation is created in this way can be avoided that some distribution feeders underutilization aufwei ⁇ sen. Uniform possible utilization in all distribution areas can be almost reach to the be ⁇ prescribed manner.
  • can lastungssituation training in this case by measuring a current flowing in the respective power supply line current and / or a voltage applied thereto are determined recognized on in relation to a part of the network operators ⁇ bers predetermined minimum current and / or a minimum that are allowed to voltage the power supply line are set.
  • the central device 17 can divert the electrical energy of the at least one energy production device arranged in the relevant distribution network area completely or partially into the energy storage device and buffer it there. If at least one switchable energy consumption device is available in the relevant distribution network area, then the central device 17 can connect the switchable energy consumption device and consume all or some of the electrical energy of the energy generation device with the energy consumption device.
  • the central device 17 in addition to the above-described procedure with detected change in the topology of the distribution network area and / or utilization of a power supply line in the relevant distribution network area, the above a maximum allowable load or below a minimum load of
  • Power supply line is also the electrical energy supply of at least one energy delivery device in another distribution network area, which is different from the relevant distribution network area, increase, reduce or stop.
  • the central facility can not only act on the distribution network area affected by the topology change and / or the high or low utilization, but also carry out suitable measures in other distribution network areas which are suitable for stabilizing the entire energy distribution network.
  • the operation of the energy distribution network 10 described above is only possible as long as the communication connections exist or the transmission quality of the communication connections reaches or exceeds a predetermined minimum quality value . Therefore, in order to further increase safety during operation of the power distribution network are also checked regularly or irregularly, whether the communication connection between a network station and the Moneinrich- is tung interrupted or the transmission quality of the Kom ⁇ munikationsSeptember falls below a predetermined minimum quality value. If the communication link is disconnected or the transmission quality of the communications link falls below the predetermined minimum quality value, the energy supply of the at least one Energyabga ⁇ striking direction is reduced in the power distribution grid or stopped. As a result, an excessive energy feed into the energy distribution network in the event of a communication failure be avoided.
  • the energy distribution is converted into a "safe" condition in which the energy supply to the energy delivery means, the from the central facility is not or only poorly accessible, is driven back. This avoids that uncontrolled too much energy is fed into the energy distribution network and this gets into an unstable state.
  • be ⁇ concerned control means may reduce or throttle for example, the power generation of the associated with them energy generating means.
  • the control devices affected by a communication failure can also redirect the energy of the energy generating devices associated with them in whole or in part into allocated energy storage devices and buffer them there. If one or more communication links are interrupted or the transmission quality of the communication ⁇ compounds falls below a predetermined minimum quality value, the local controllers will take over that can be triggered augmentation of the associated energy generating means 16d, 16g and 16h and the energy storage devices 16a, 16e, 16f itself, namely in the manner that the Ver ⁇ subnet is converted into a stable, safe state 10th Is affected by a problem of communication control device of a power generation device 16d, 16g, 16h associated with the control device concerned is preferential, the power generation of the power generating means 16d, 16g, reduce or stop as soon as the communica ⁇ tion connection is disconnected or the transmission quality of the communication link 16h the below the given minimum quality value.
  • control device affected by a communication problem is associated with an energy generating device 16d, 16g, 16h and an energy storage device 16a, 16e, 16f, then the control device can throttle and / or into the energy of the energy generating device 16d, 16g, 16h
  • Energy storage device 16a, 16e, 16f steer and caching there as soon as the communication connection is interrupted or the transmission quality of the communication link below the predetermined minimum quality value.
  • a control device affected by a communication problem is associated with an energy generating device 16d, 16g, 16h and a power consumption device 16b, 16c
  • the control device can throttle the power generation of the energy generating device 16d, 16g, 16h and / or switch on the energy consumption device 16b, 16c and the energy the energy generating device 16d, 16g, 16h completely or partially consume the energy consumption device 16b, 16c when the communication connection is interrupted or the transmission quality of Medunikationsverbin ⁇ tion falls below the predetermined minimum quality value.
  • a control device affected by a communication problem is associated with only one or more energy storage devices 16a, 16e, 16f, then the control device will preferably keep the energy stored and avoid feeding it into the distribution network.
  • the central device 17 dung or a detected interruption of communication connections a drop in the transmission quality falls below the predetermined minimum quality value, the electric Energy ⁇ supply at least one energy delivery device in a different distribution range which is different from the respective distribution area is increased, reduced or stops and / or throttles, the electric power receiving means connected to the walls ⁇ ren distribution energy consuming device on or off.
  • the central device 17 the tendency of the energy delivery devices is known, wherein a communication fault in a safe operating condition to pass. Consequently, the central facility can take appropriate measures to positively influence network stability.
  • the control of the energy flow in the network can primarily by the local Spei ⁇ chern the excess energy in the network subscribers of individual network areas and retrieving the stored energy in a lack of locally generated energy or by throttling the energy production at a production surplus and no energy transport capacity in the
  • Distribution network done.
  • the instantaneous amount of energy stored at the network subscribers is permanently monitored by the central device 17.
  • stabilization of the distribution network 10 is preferably carried out by a locally controlled throttling of the power supply.
  • FIGS. 4 and 5 show a further exemplary embodiment of an arrangement for monitoring and / or regulating the energy distribution in a partial area of a three-phase network with decentralized energy supply and / or storage.
  • a distribution network 40 consists of a power transformer 41 with a transformer fuse 41a, a bus bar 42 with branch switching devices 43a and 43b, and distribution network strands, of which only one is shown in detail in Figure 4 and by the reference numeral 44 (between points a and b).
  • the individual Verteilnetzteil choir are connected by means of Energyzäh- 1er 45a to 45c to the network 40, wherein the energy meter 45c is connected upstream of a 3-phase controllable power generator 46.
  • the distribution network subscribers 47a and 47b may be any power generation devices, Energy storage devices or energy consumption devices act.
  • a current measuring device 48 is installed in the network 40.
  • the network strands together with all associated elements are represented as a line bundle intended to symbolize phase lines LI to L3 and the neutral conductor.
  • the distribution network area with the network strand 44 is shown in more detail in FIG. It was for the sake of
  • the Strommesseinrich ⁇ tung 48 consists of a device 50 for capturing and processing of currents and voltages and, if necessary, a communication device 51 which is connected to phase conductors LI, L2 and L3 and / or the neutral conductor N and communicates this.
  • the energy meters 45a and 45c (energy counter 45b is not shown, as mentioned) each include a device 52, which also performs a detection and processing of currents and / or voltages of individual power lines LI, L2, L3 in addition to the actual energy metering, and one each Communication device 53.
  • the energy meters 45a and 45c communicate with the current measuring device 48, in particular with a central device 54 which is contained in the current measuring device 48 and monitors inter alia the network strand 44.
  • the energy meter 45c additionally contains a switch-off device 55 and a control unit 57 connected to a control unit 57. ne control interface 56 to the power generator 46, which is 3-phase connected via the power meter 45c to the network.
  • the central control unit 54 sends the current measuring device 48 via the communication device 51 to the controller 57 in the energy counter 45c periodically control messages from, the target set values for the power generator 46 contained ⁇ th. Based on the values of the control unit controls 57 via the control interface 56, the power generation in the power generator 46 and monitored via the same control ⁇ interface 56 the operating state of the power generator 46th
  • the control unit 57 influences the energy generator 46 already in FIG explained manner.
  • control interface 56 between the controller ⁇ unit 57 and the power generator 46 fails, the network connection of the power generator 46 is disconnected by means of the shutdown device 55 to prevent potentially greater damage to the power generator 46 or a possible power short circuit.
  • the central device 57 itself can take measures for network stabilization. In doing so, it can either increase, reduce or stop the energy feed into the distribution network or throw off controllable loads from the distribution network.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un procédé d'exploitation d'un réseau de distribution d'énergie (10) comprenant une pluralité d'unités de réseau, lesdites unités de réseau comprenant au moins une installation de fourniture d'énergie, et les unités du réseau étant reliées à une installation centrale de surveillance (17) par une liaison de communication unidirectionnelle ou bidirectionnelle. Afin d'assurer un fonctionnement robuste et sûr du réseau de distribution d'énergie (10), il est prévu selon l'invention qu'une topologie du réseau de distribution d'énergie (10) soit surveillée par le système central (17) et que lorsqu'une modification de la topologie du réseau de distribution d'énergie (10) est détectée, l'injection d'énergie électrique dans la partie du réseau de distribution (10) affectée par la modification par au moins une installation de fourniture d'énergie située dans la partie affectée par ladite modification du réseau de distribution d'énergie (10) est augmentée, réduite ou interrompue par l'installation centrale (17).
PCT/EP2011/056016 2011-04-15 2011-04-15 Réseau de distribution d'énergie et procédé d'exploitation de ce réseau Ceased WO2012139656A1 (fr)

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PCT/EP2011/056016 WO2012139656A1 (fr) 2011-04-15 2011-04-15 Réseau de distribution d'énergie et procédé d'exploitation de ce réseau

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PCT/EP2011/056016 WO2012139656A1 (fr) 2011-04-15 2011-04-15 Réseau de distribution d'énergie et procédé d'exploitation de ce réseau

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WO2012139656A1 true WO2012139656A1 (fr) 2012-10-18

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WO2014187501A1 (fr) * 2013-05-24 2014-11-27 Siemens Aktiengesellschaft Réseau de distribution d'énergie et son procede de fonctionnement
WO2014198158A1 (fr) * 2013-06-14 2014-12-18 山东理工大学 Procédé de commande de l'identification automatique de la topologie du réseau d'application par les réseaux de distribution d'énergie
CN104376500A (zh) * 2013-01-04 2015-02-25 湖州电力局 一种临时改变电网拓扑结构的方法
CN104376499A (zh) * 2013-01-04 2015-02-25 湖州电力局 图形调度操作票系统中电网拓扑结构冲突消解方法
CN112968520A (zh) * 2021-01-29 2021-06-15 国网浙江省电力有限公司营销服务中心 基于台区关键节点特征电流信息的台区拓扑识别方法
CN113515831A (zh) * 2021-07-30 2021-10-19 广东电网有限责任公司 能源调度方法、装置、电子设备及存储介质
CN115333240A (zh) * 2022-08-12 2022-11-11 国网上海能源互联网研究院有限公司 一种用于分布式馈线的自动化方法及装置

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US20110066296A1 (en) * 2002-10-25 2011-03-17 S&C Electric Company Method and Apparatus for Control of an Electric Power Distribution System in Response to Circuit Abnormalities

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US20110066296A1 (en) * 2002-10-25 2011-03-17 S&C Electric Company Method and Apparatus for Control of an Electric Power Distribution System in Response to Circuit Abnormalities
DE10327344A1 (de) * 2003-06-16 2005-01-27 Repower Systems Ag Windenergieanlage
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Cited By (11)

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Publication number Priority date Publication date Assignee Title
CN104376500A (zh) * 2013-01-04 2015-02-25 湖州电力局 一种临时改变电网拓扑结构的方法
CN104376499A (zh) * 2013-01-04 2015-02-25 湖州电力局 图形调度操作票系统中电网拓扑结构冲突消解方法
CN104376500B (zh) * 2013-01-04 2017-09-08 湖州电力局 一种临时改变电网拓扑结构的方法
CN104376499B (zh) * 2013-01-04 2018-01-30 湖州电力局 图形调度操作票系统中电网拓扑结构冲突消解方法
WO2014187501A1 (fr) * 2013-05-24 2014-11-27 Siemens Aktiengesellschaft Réseau de distribution d'énergie et son procede de fonctionnement
US10073480B2 (en) 2013-05-24 2018-09-11 Siemens Aktiengesellschaft Power distribution network and method for operation thereof
WO2014198158A1 (fr) * 2013-06-14 2014-12-18 山东理工大学 Procédé de commande de l'identification automatique de la topologie du réseau d'application par les réseaux de distribution d'énergie
CN112968520A (zh) * 2021-01-29 2021-06-15 国网浙江省电力有限公司营销服务中心 基于台区关键节点特征电流信息的台区拓扑识别方法
CN113515831A (zh) * 2021-07-30 2021-10-19 广东电网有限责任公司 能源调度方法、装置、电子设备及存储介质
CN113515831B (zh) * 2021-07-30 2023-07-18 广东电网有限责任公司 能源调度方法、装置、电子设备及存储介质
CN115333240A (zh) * 2022-08-12 2022-11-11 国网上海能源互联网研究院有限公司 一种用于分布式馈线的自动化方法及装置

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