[go: up one dir, main page]

CN109038558A - Simulate the power distribution network planning scheme security assessment method of optimum control process - Google Patents

Simulate the power distribution network planning scheme security assessment method of optimum control process Download PDF

Info

Publication number
CN109038558A
CN109038558A CN201810870199.1A CN201810870199A CN109038558A CN 109038558 A CN109038558 A CN 109038558A CN 201810870199 A CN201810870199 A CN 201810870199A CN 109038558 A CN109038558 A CN 109038558A
Authority
CN
China
Prior art keywords
combination
distribution network
control process
voltage
network planning
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.)
Granted
Application number
CN201810870199.1A
Other languages
Chinese (zh)
Other versions
CN109038558B (en
Inventor
程林
万宇翔
刘满君
黄强
田立亭
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.)
Tsinghua University
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
Original Assignee
Tsinghua University
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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 Tsinghua University, Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd filed Critical Tsinghua University
Priority to CN201810870199.1A priority Critical patent/CN109038558B/en
Publication of CN109038558A publication Critical patent/CN109038558A/en
Application granted granted Critical
Publication of CN109038558B publication Critical patent/CN109038558B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses a kind of power distribution network planning scheme security assessment methods for simulating optimum control process, comprising the following steps: step S1, extracts the parameter of power distribution network planning scheme；Step S2, in the case where not applying control process to system, Load flow calculation is carried out, and divide regulating time section for the limited adjustable device of number of operations in the system；Step S3, system is carried out decoupling and forms multiple subsystems by the operating status for enumerating part adjustable device, and generates the combination table that each subsystem constitutes operating status combination and period；Step S4, by simulation optimum control process, the feasibility of operating status combination is inscribed when analyzing each in combination table, and calculates the system performance under every kind of combination；Step S5, can the feasible combination of comprehensive matching all the period of time, judgement select optimal composite sequence, if can select, safety is reliable, conversely, then safety is unreliable.The present invention has fully considered device type and controllability in power distribution network.

Description

Simulate the power distribution network planning scheme security assessment method of optimum control process
Technical field
The present invention relates to system for distribution network of power planning fields, and in particular, to a kind of simulation optimum control process is matched Power network planning scheme security assessment method.
Background technique
Power distribution network is in the end of electric system, is directly facing power consumer, carries to user and distributes electric energy, service visitor The important task at family, planning level will directly influence the quality of construction achievement.Wherein, the safety of power distribution network planning scheme is commented Later period operational effect will be directly affected by estimating, and be the significant concern point of distribution network planning assessment.Power distribution network is in high speed in recent years Developing period, the development of the technologies such as distributed energy, alternating current-direct current mixed connection, Demand Side Response, so that power distribution network is in network structure, member Element composition and controllability and flexibility etc. are all experiencing deep variation, also bring change programme safety and comment Estimate the opportunity of thinking.
The raising of following power distribution network device type and controllability abundant, power distribution network can neatly be fitted by running control It answers various operating conditions, improve trend distribution, meanwhile, the following power distribution network planning scheme should fully consider connecing for many new elements Enter.And in the prior art, in the control for carrying out having related generally to one or more equipment when power distribution network planning scheme assessment Journey, but it is not yet completely that on-load regulator transformer, feeder line capacitance compensation, distributed generation resource, electric car, alternating current-direct current is flexible mutually The potential control resource coordinating such as coupling device considers especially rarely have to direct current interconnect device and be related to.
In addition, generally analyzing the operation of each control resource using optimal load flow in existing programme appraisal procedure Control process and the feasibility for judging scheme.Optimal load flow method is suitable for carrying out the Complicated Distribution Network containing various control resource Network analysis, can accurately provide the optimized operation control process of programme, but have to solve the extensive mixed of complexity Integer problem is closed, computational efficiency is lower, causes very big inconvenience to planning；Can also exist according to heuritic approach can not obtain Globally optimal solution and result there are randomness, there is no the problems such as monotonicity, be not suitable for the screening of programme and right Than.Therefore, existing power distribution network planning scheme appraisal procedure effectively can not consider operation control process to Complicated Distribution Network Programme carries out safety evaluation.
Summary of the invention
In view of the foregoing, it is an object to provide a kind of power distribution network planning scheme peace for simulating optimum control process Full property appraisal procedure, when solving existing power distribution network planning scheme safety evaluation, completely cannot control resource for power distribution network It is included in safety evaluation scope and cooperate with and consider the problems of, to effectively simulate all kinds of controls involved in power distribution network planning scheme Resource processed and operation details.
To achieve the goals above, the invention adopts the following technical scheme:
The power distribution network planning scheme security assessment method of simulation optimum control process of the present invention, including following step It is rapid:
Step S1, the parameter of power distribution network planning scheme is extracted；
Step S2, in the case where not applying control process to system, Load flow calculation is carried out, node voltage is obtained and main transformer is negative Sequence is carried, and divides regulating time section for the limited adjustable device of number of operations in the system；
Step S3, adjustable device described in selected section enumerates the operating status of the adjustable device of selection, by the system into Row decoupling forms multiple subsystems, and generates each subsystem and combined by the operating status of the adjustable device selected and period structure At combination table；
Step S4, it by simulating the optimum control process of the adjustable device, is inscribed when analyzing each in the combination table The feasibility of the operating status combination, and calculate the system performance under every kind of combination；
Step S5, can the feasible combination of comprehensive matching full period, judgement select optimal composite sequence, if can select Fixed, then the safety of the power distribution network planning scheme is reliable, if cannot select, the safety of the power distribution network planning scheme It is unreliable.
Preferably, the step S5 further include: if optimal composite sequence can be selected, optimal combination is filtered out, and Export the control process of the adjustable device；If optimal composite sequence cannot be selected, reason is exported.
Preferably, in the step S3, the adjustable device selected is on-load regulator transformer and flexible direct current device, operation Combinations of states is no-load voltage ratio-DC port power combination of on-load regulator transformer.
Preferably, the method for selecting optimal composite sequence includes: on-load regulator transformer in analysis subsystems Feasible no-load voltage ratio, and be the best DC port power inscribed when each no-load voltage ratio chooses each, according still further to the feasibility and shelves of no-load voltage ratio The sequence of position from high to low is no-load voltage ratio assignment of each on-load regulator transformer in each period, and formation is multiple to have load to adjust The composite sequence that the no-load voltage ratio of pressure transformer-DC port power combination is constituted, is screened out from it optimal composite sequence.
Preferably, the step S4 includes:
Judge whether no-load voltage ratio increment of the on-load regulator transformer in a period T meets formula in the combination table (1) constraint of voltage shown in,
Wherein, Δ ρTFor no-load voltage ratio increment, V is voltage, and i is node serial number, and t is a certain moment in period T.
Preferably, the step S4 includes:
Judge whether no-load voltage ratio increment of the on-load regulator transformer in a period T meets formula in the combination table (2) constraint of voltage shown in,
Wherein, Δ ρTFor no-load voltage ratio increment, V is voltage, and i is node serial number, and t is a certain moment in period T, j be with Node i belongs to the node serial number of a certain adjustable device on same feeder line, and f is feeder line number, Hij,KijRespectively node i voltage To in node j adjustable device inject active power, the voltage sensibility of reactive power,It is adjustable to respectively indicate node j The maximum value of the active power, reactive power injected in equipment, ΔP j,ΔQ jRespectively indicate having of injecting in node j adjustable device The minimum value of function power, reactive power.
Preferably, the step S4 includes: that successively calculating compensation equipment is idle from big to small according to the idle sensitivity of voltage- The regulated quantity of power injection, corrects voltage out-of-limit.
Preferably, the step S4 further include: successively calculating voltage from big to small according to voltage-active po wer sensitivity is more than rule The photovoltaic power generation of the feeder line of definite value abandons light quantity.
Preferably, the step S4 includes: to carry out load reduction according to voltage and main transformer restraint of loads range, And each node voltage is updated according to voltage sensibility and updates system load using loss-sensitivity relation.
Preferably, in the step S3, longitudinal gauge outfit of the combination table is that the no-load voltage ratio-of the on-load regulator transformer is straight Flow port power combination, lateral gauge outfit are each moment in the period and each period divided, and table body is for recording System performance of the every kind of combination at each moment, table body includes rows and columns, wherein line number is the combined sum, column Number is the sum at moment.
Compared with prior art, the present invention has the following advantages and beneficial effects:
In security assessment method of the present invention, device type and controllability abundant in power distribution network have been fully considered, Power distribution network as much as possible control resource is included in the safety evaluation scope of programme, and fully considers all kinds of control resources Between coordination and interaction process, the development trend suitable for alternating current-direct current mixing power distribution network.
The present invention is by simulation optimum control process, by the extensive mixed-integer problem conversion of the complexity of optimal load flow modeling It is effectively prevented extensive containing integer variable while obtaining with optimal load flow analog result for simple Algebra modeling problem Computation burden optimization problem modeling and solved, significantly improves analysis efficiency, is more suitable for all kinds of controllable resources accesses and matches The task feature of Electric Power Network Planning " having a large capacity and a wide range ", takes into account solution efficiency and ease for use.
It is out-of-limit in solution voltage, load capacity that safety evaluation method of the present invention can sufficiently simulate power distribution network planning scheme The coordinated operation control of various kinds of equipment, can successively analyze the control process of adjustable device when problem.
Detailed description of the invention
Fig. 1 is the flow diagram of power distribution network planning scheme security assessment method of the present invention；
Fig. 2 is no-load voltage ratio-DC port power combination table schematic diagram of on-load regulator transformer in the present invention；
Fig. 3 is the no-load voltage ratio increment Delta ρ-t relation schematic diagram of on-load regulator transformer in the present invention；
Fig. 4 is on-load regulator transformer no-load voltage ratio in the present invention-DC port power combination sequence schematic diagram.
Specific embodiment
Embodiment of the present invention described below with reference to the accompanying drawings.Those skilled in the art may recognize that It arrives, it without departing from the spirit and scope of the present invention, can be with a variety of different modes or combinations thereof to described Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim Range.In addition, in the present specification, attached drawing is drawn not in scale, and identical appended drawing reference indicates identical part.
The present invention is set by limited adjustable of the number of operations of selected section key according to the weak coupling feature of power distribution network It is standby, and the operating status of crucial adjustable device is enumerated, the alternating current-direct current complication system to intercouple decoupling is formed as more Then a isolated intercommunion subsystem is respectively calculated analysis to each subsystem, computational efficiency is improved, finally to each height Can the operating status of system carries out matching combination, be screened out from it optimal composite sequence by judgement, complete to power distribution network The safety evaluation of programme.
Fig. 1 is the flow diagram of power distribution network planning scheme security assessment method of the present invention, as shown in Figure 1, this Invent the power distribution network planning scheme security assessment method the following steps are included:
Step S1, the parameter of power distribution network planning scheme is extracted, wherein including distribution net topology, network parameter, distributed electrical Source power output and electric car access sequence etc.；
Step S2, in the case where not applying control process to system, Load flow calculation is carried out, node voltage is obtained and main transformer is negative Sequence is carried, and divides regulating time section for the limited adjustable device of number of operations in the system, what wherein number of operations was limited can Adjusting equipment includes on-load regulator transformer and lead compensation capacitor；
Step S3, selected section adjustable device enumerates the operating status of the adjustable device of selection, which is decoupled Multiple subsystems are formed, and generate the period structure that each subsystem is combined and divided by the operating status of the adjustable device selected At combination table；
Step S4, by simulating the optimum control process of the adjustable device, analyze divided in said combination table when Between it is each in section when inscribe the feasibility of the operating status combination, and calculate the system performance under every kind of combination；
Step S5, can the feasible combination of comprehensive matching full period, judgement select optimal composite sequence, if can select Fixed, then the safety of the power distribution network planning scheme is reliable, if cannot select, the safety of the power distribution network planning scheme It is unreliable, wherein the feasible combination of comprehensive matching full period, refer to by step S4 analyze operating status combination can Row inscribes each subsystem when each and is likely to be obtained a variety of feasible combinations, thus need to obtain it is a variety of can Row combination carries out comprehensive matching, and the optimal feasible combination inscribed when convenient for therefrom selecting each is to meet the system, and complete Comprehensive matching is carried out in period, so as to form optimal composite sequence.
The present invention has fully considered device type and controllability abundant in the following power distribution network, by power distribution network as much as possible Control resource is included in the safety evaluation scope of programme, and fully considers the coordination and interaction between all kinds of control resources Journey, the development trend suitable for alternating current-direct current mixing power distribution network.
Optimal segmentation is used to a data sequence being divided into multiple continuous segments, so that data have in each segment There is maximum similitude.In power distribution network, on-load regulator transformer (Load Tap Changing, LTC) and grouping switching electricity Container has number of operations limitation in actual moving process, it is desirable that no-load voltage ratio gear and capacitor investment group number must be in a period of times The reason of interior holding definite value, this kind of equipment setting state can remain unchanged, is in this time that system mode has similar Property, so, optimal segmentation can be used for dividing the state similar period.
In step s 2, voltage highest and lowest in system is substituted into optimal segmentation, divides regulating time section for LTC； The voltage of feeder terminal is substituted into optimal segmentation, is that the equipment such as compensating electric capacity divide regulating time section.Preferably, the step S2 further includes the voltage sensibility matrix and second order network loss function for calculating the system, is other kinds adjustable on subsequent analysis feeder line Influence of the equipment to Load flow calculation provides basis.
In step s3, by discrete adjustable device crucial in selection system, and crucial in system discrete adjustable set is enumerated Standby operating status, decouples system, by complicated system decoupling at multiple isolated intercommunion subsystems, improves analysis Efficiency reduces computation burden.In one embodiment of the invention, in the step S3, the crucial adjustable device that selects for On-load regulator transformer and flexible direct current device, according to the weak coupling feature of power distribution network, the operating status for the adjustable device enumerated The DC port watt level of no-load voltage ratio size and flexible direct current device including on-load regulator transformer, operating status group are combined into LTC no-load voltage ratio-DC port power combination.
It should be noted that in the present invention, according to the difference of selected adjustable device, the operation for the adjustable device enumerated State is different, and the combination for being formed by operating status is also different.
Below by taking the adjustable device selected is on-load regulator transformer and flexible direct current device as an example, further specifically The bright present invention.
Fig. 2 is no-load voltage ratio-DC port power combination table schematic diagram of on-load regulator transformer in the present invention, such as Fig. 2 institute Show, longitudinal gauge outfit of the combination table is LTC no-load voltage ratio-DC port power combination, wherein no-load voltage ratio is set as ρ1…ρx, Mei Gezhi The power of flow port chooses a series of discrete value P according to certain precision1、P2…Px, two DC ports are only shown in Fig. 2, Lateral gauge outfit is period 1 ... the T divided the and t of each moment 1 ... in each period, and table body is for recording every kind of group The system performance at each moment is closed, table body includes rows and columns, wherein line number is combined sum, and columns is the moment Sum.
In step s 4, after step S3 generates LTC no-load voltage ratio-DC port power combination table, by simulating optimum control Process, analyzes the feasibility of every kind of combination in said combination table, and calculates performance of the every kind of combination at each moment, fills in group Close the table body portion of table.
In an optional embodiment of the present invention, the step S4 includes:
Judge whether no-load voltage ratio increment of the on-load regulator transformer in a period T meets formula (1) institute in combination table The voltage constraint shown mitigates computation burden to exclude a large amount of invalid combination,
Wherein, Δ ρTFor no-load voltage ratio increment, V is voltage, and i is node serial number, and t is a certain moment in period T；In satisfaction The no-load voltage ratio increment for stating voltage constraint is considered feasible no-load voltage ratio increment, and obtained no-load voltage ratio position is feasible.
In another optional embodiment of the invention, when judging whether no-load voltage ratio increment meets voltage constraint, it is contemplated that The voltage adjustment effect of other adjustable devices in system, passes through voltage for the injection of the active power of other equipment, reactive power The mode of sensitivity introduces formula (1), to expand the range of feasible no-load voltage ratio increment, forms voltage shown in following formula (2) Constraint,
Wherein, Δ ρTFor no-load voltage ratio increment, V is voltage, and i is node serial number, and t is a certain moment in period T, j be with Node i belongs to the node serial number of a certain adjustable device on same feeder line, and f is feeder line number, Hij,KijRespectively node i voltage To in node j adjustable device inject active power, the voltage sensibility of reactive power,It is adjustable to respectively indicate node j The maximum value of the active power, reactive power injected in equipment, ΔP j,ΔQ jRespectively indicate having of injecting in node j adjustable device The minimum value of function power, reactive power.Fig. 3 is the no-load voltage ratio increment Delta ρ-t relation schematic diagram of on-load regulator transformer in the present invention, As shown in figure 3, a square indicates the no-load voltage ratio increment at a certain moment in a period of time acquired according to formula (1), b and c square It respectively indicates the widened upper range of no-load voltage ratio increment acquired according to formula (2) and lower range is mentioned when excessive power drain The upper limit of high no-load voltage ratio increment reduces the lower limit of no-load voltage ratio increment when excess power injection, and finally determining LTC is in a time No-load voltage ratio increment in section T should be in Δ ρ obtained by each node of traversal, each momentTIn the intersection of range, so that LTC no-load voltage ratio Voltage constraint is all satisfied at each node, each moment.After determining LTC no-load voltage ratio, according to all nodes of LTC no-load voltage ratio more new system Voltage updates the endpoint node voltage with the same feeder line in port according to DC port active power, and updates having for main transformer Function load and reactive load.
In one embodiment of the present of invention, the step S4 include: according to the idle sensitivity of voltage-from big to small successively The regulated quantity for calculating compensation equipment reactive power injection, corrects voltage out-of-limit.Specifically, the idle function of all kinds of adjustable devices is adjusted Rate injection is entangled using the reactive power injection of parallel capacitive compensation on feeder line and photovoltaic DC-to-AC converter, flexible direct current interconnect device Positive voltage is out-of-limit.Shunt capacitance on the feeder line of discrete device is adjusted, according to the regulating time section divided in step S2, is solved each Place's capacitance compensation needs the group number put into each period；Then, photovoltaic DC-to-AC converter is adjusted respectively and flexible direct current interconnects The injection reactive power of device.When there is many places to compensate equipment on feeder line, according to the idle sensitivity of voltage-from big to small successively Calculate respective compensation rate.If load or burden without work is heavier in system, further set using shunt capacitors on a distribution feeder, photovoltaic DC-to-AC converter etc. Standby remaining reactive power compensation planning improves system power factor.
Further, after correcting voltage out-of-limit, voltage is still excessively high on feeder line, needs to abandon light, it is preferable that institute Stating step S4 further includes calculating the photovoltaic power generation of the feeder line that voltage is more than specified value to abandon light quantity, when there is multiple photovoltaics to connect on feeder line Enter, then successively calculated according to the sequence of voltage-active po wer sensitivity from big to small, so that total abandoning light quantity is minimum.
In an alternative embodiment of the invention, the step S4 includes: according to voltage and main transformer restraint of loads Range carries out load reduction, to eliminate low voltage and eliminate main transformer overload, and updates each section according to voltage sensibility It puts voltage and updates system load using loss-sensitivity relation.Wherein, it when carrying out load reduction, needs to follow load Cut down depth principle as consistent as possible, to avoid the loads such as a other electric car charging station cut down it is too deep cause it is unnecessary Undercharge.
It should be noted that in the present invention, in the control process of sunykatuib analysis adjustable device, according to discrete adjustable device Successively divide prior to active equipment, power supply adjusting prior to the sequence of Load Regulation prior to continuously adjusting equipment, reactive apparatus Analysis calculates every kind of combination in the feasibility and system performance at each moment.
In one embodiment of the present of invention, the step S5 further include: if LTC no-load voltage ratio-DC port power can be selected Optimal combination in combination then filters out optimal LTC no-load voltage ratio-DC port power combination, adjustable device in output system Control process completes the safety evaluation of power distribution network planning scheme；If LTC no-load voltage ratio-DC port power combination cannot be selected Optimal combination, then export reason (including voltage can not be eliminated or capacity is out-of-limit etc.), complete the safety of power distribution network planning scheme Property assessment.
Further, in step s 5, selecting optimal LTC no-load voltage ratio-DC port power combination sequence method includes: The LTC no-load voltage ratio of subsystems (being shown as subsystem A, subsystem B and subsystem C in Fig. 4) is enumerated, and is chosen for each no-load voltage ratio The best DC port power inscribed when each, the sequence of feasibility and gear from high to low according still further to no-load voltage ratio are each LTC In the no-load voltage ratio assignment of each period, as shown in figure 4, forming the sequence that multiple LTC no-load voltage ratios-DC port power combination is constituted Column, wherein in Fig. 4, ρA,T、ρB,T、ρC,TRespectively indicate the no-load voltage ratio of subsystem A, B, C in period T, 1, x, y, z respectively indicates No-load voltage ratio assignment therefrom selectes optimal LTC no-load voltage ratio-according to the system performance under every kind of LTC no-load voltage ratio-DC port power combination DC port power combination sequence, and determine the operating status of each adjustable device, export the control process of adjustable device.
It in step s 5, can be according to step after the composite sequence for filtering out optimal LTC no-load voltage ratio and DC port power Analysis method in rapid S4 determines other adjustable devices (for example, lead compensation capacitor, distributed generation resource and electric automobile charging station Deng) operating status, its control process is exported, to complete the solution of Optimal regulation and control process.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1.一种模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，包括以下步骤：1. A method for evaluating the safety of a distribution network planning scheme for simulating an optimal control process, characterized in that it comprises the following steps: 步骤S1、提取配电网规划方案的参数；Step S1, extracting the parameters of the distribution network planning scheme; 步骤S2、在对系统不施加控制过程下，进行潮流计算，得到节点电压和主变压器负载序列，并为所述系统中操作次数受限的可调设备划分调节时间段；Step S2, without imposing a control process on the system, perform power flow calculation to obtain the node voltage and the load sequence of the main transformer, and divide the adjustment time period for the adjustable equipment with a limited number of operations in the system; 步骤S3、选择部分所述可调设备，枚举选择的可调设备的运行状态，将所述系统进行解耦形成多个子系统，并生成每个子系统由选择的可调设备的运行状态组合及时间段构成的组合表；Step S3: select some of the adjustable devices, enumerate the operating states of the selected adjustable devices, decouple the system to form multiple subsystems, and generate a combination of the operating states of the selected adjustable devices for each subsystem and Combination table composed of time periods; 步骤S4、通过模拟所述可调设备的最优控制过程，分析所述组合表中每个时刻下所述运行状态组合的可行性，并计算每种组合下的系统性能；Step S4, by simulating the optimal control process of the adjustable equipment, analyzing the feasibility of the operation state combination at each moment in the combination table, and calculating the system performance under each combination; 步骤S5、综合匹配全时间段的可行组合，判断能否选定最佳的组合序列，若可以选定，则所述配电网规划方案的安全性可靠，若不可以选定，则所述配电网规划方案的安全性不可靠。Step S5, comprehensively match the feasible combination of the whole time period, judge whether the best combination sequence can be selected, if it can be selected, then the security of the distribution network planning scheme is reliable, if not, then the The security of the distribution network planning scheme is unreliable. 2.根据权利要求1所述的模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S5还包括：若可以选定最佳的组合序列，则筛选出最佳组合，并输出所述可调设备的控制过程；若不可以选定最佳的组合序列，则输出原因。2. The method for evaluating the security of a distribution network planning scheme for simulating an optimal control process according to claim 1, wherein said step S5 further comprises: if the best combination sequence can be selected, then filter out the best The optimal combination is output, and the control process of the adjustable equipment is output; if the optimal combination sequence cannot be selected, the reason is output. 3.根据权利要求1或2所述的模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S3中，选择的可调设备为有载调压变压器和柔性直流装置，运行状态组合为有载调压变压器的变比-直流端口功率组合。3. according to claim 1 or 2 described method for evaluating the security of the distribution network planning scheme of simulating optimal control process, it is characterized in that, in described step S3, the adjustable equipment selected is the on-load tap changer transformer and the flexible For the DC device, the operating state combination is the transformation ratio of the on-load tap changer - the combination of the DC port power. 4.根据权利要求3所述的模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，选定最佳的组合序列的方法包括：分析各个子系统中有载调压变压器的可行变比，并为每个变比选取每一时刻下的最佳直流端口功率，再按照变比的可行性和档位由高到低的顺序，为每个有载调压变压器在每一个时间段的变比赋值，形成多个有载调压变压器的变比-直流端口功率组合构成的组合序列，从中筛选出最佳的组合序列。4. the method for evaluating the safety of the distribution network planning scheme of simulating optimal control process according to claim 3, is characterized in that, the method for selecting the best combined sequence comprises: analyzing the on-load tap changer in each subsystem The feasible transformation ratio, and select the best DC port power at each moment for each transformation ratio, and then according to the feasibility of the transformation ratio and the order of gears from high to low, for each on-load tap changer at each The transformation ratio assignment in a time period forms a combination sequence composed of the transformation ratio-DC port power combination of multiple on-load tap changer transformers, and the best combination sequence is selected from it. 5.根据权利要求3所述的模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S4包括：5. The distribution network planning scheme security evaluation method of simulating optimal control process according to claim 3, characterized in that, said step S4 comprises: 判断所述组合表中有载调压变压器在一个时间段T内的变比增量是否满足公式(1)所示的电压约束，Judging whether the transformation ratio increment of the on-load tap changer in the combination table in a time period T satisfies the voltage constraint shown in formula (1), 其中，ΔρT为变比增量，V为电压，i为节点编号，t为时间段T中的某一时刻。Among them, Δρ T is the transformation ratio increment, V is the voltage, i is the node number, and t is a certain moment in the time period T. 6.根据权利要求3所述的模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S4包括：6. The distribution network planning scheme security evaluation method of simulating optimal control process according to claim 3, characterized in that, said step S4 comprises: 判断所述组合表中有载调压变压器在一个时间段T内的变比增量是否满足公式(2)所示的电压约束，Judging whether the transformation ratio increment of the on-load tap changer in the combination table in a time period T satisfies the voltage constraint shown in formula (2), 其中，ΔρT为变比增量，V为电压，i为节点编号，t为时间段T中的某一时刻，j为与节点i属于同一馈线上的某一可调设备的节点编号，f为馈线编号，Hij,Kij分别为节点i电压对节点j可调设备上注入有功功率、无功功率的电压灵敏度，分别表示节点j可调设备上注入的有功功率、无功功率的最大值，ΔP j,ΔQ j分别表示节点j可调设备上注入的有功功率、无功功率的最小值。Among them, Δρ T is the transformation ratio increment, V is the voltage, i is the node number, t is a certain moment in the time period T, j is the node number of an adjustable device on the same feeder line as node i, f is the feeder number, H ij , K ij are the voltage sensitivities of the node i voltage to the active power and reactive power injected into the adjustable equipment of node j respectively, Respectively represent the maximum value of active power and reactive power injected on the adjustable device of node j, Δ P j , Δ Q j respectively represent the minimum value of active power and reactive power injected on the adjustable device of node j. 7.根据权利要求3所述的模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S4包括：按照电压-无功灵敏度从大到小依次计算补偿设备无功功率注入的调节量，纠正电压越限。7. The method for evaluating the safety of a distribution network planning scheme for simulating an optimal control process according to claim 3, wherein said step S4 includes: calculating the power of compensation equipment according to the voltage-reactive power sensitivity from large to small Adjustment amount of power injection to correct voltage over limit. 8.根据权利要求7所述的配电网规划方案的安全性评估方法，其特征在于，所述步骤S4还包括：按照电压-有功灵敏度从大到小依次计算电压超过规定值的馈线的光伏发电弃光量。8. The safety assessment method of distribution network planning scheme according to claim 7, characterized in that, said step S4 further comprises: calculating the photovoltaic power of the feeder whose voltage exceeds the specified value in order according to the voltage-active power sensitivity from large to small Amount of light discarded for power generation. 9.根据权利要求3所述的一种模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S4包括：根据电压和主变压器负载的约束范围，进行负荷削减，并按照电压灵敏度更新各节点电压以及利用损耗-灵敏度关系更新系统负载。9. A method for evaluating the safety of a distribution network planning scheme that simulates an optimal control process according to claim 3, wherein said step S4 includes: performing load reduction according to the constraint range of voltage and main transformer load , and update the voltage of each node according to the voltage sensitivity and update the system load by using the loss-sensitivity relationship. 10.根据权利要求3所述的一种模拟最优控制过程的配电网规划方案安全性评估方法，其特征在于，所述步骤S3中，所述组合表的纵向表头是所述有载调压变压器的变比-直流端口功率组合，横向表头是划分的时间段以及各个时间段内的每个时刻，表体用于记录每种组合在每个时刻的系统性能，表体包括多行和多列，其中，行数为所述组合的总数，列数为时刻的总数。10. A method for evaluating the safety of a distribution network planning scheme simulating an optimal control process according to claim 3, wherein, in said step S3, the longitudinal header of said combination table is said loaded Transformation ratio of voltage regulating transformer - DC port power combination, the horizontal meter header is the divided time period and each moment in each time period, the meter body is used to record the system performance of each combination at each moment, the meter body includes multiple Rows and multiple columns, wherein the number of rows is the total number of combinations, and the number of columns is the total number of moments.
CN201810870199.1A 2018-08-02 2018-08-02 Power distribution network planning scheme safety evaluation method for simulating optimal control process Active CN109038558B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810870199.1A CN109038558B (en) 2018-08-02 2018-08-02 Power distribution network planning scheme safety evaluation method for simulating optimal control process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810870199.1A CN109038558B (en) 2018-08-02 2018-08-02 Power distribution network planning scheme safety evaluation method for simulating optimal control process

Publications (2)

Publication Number Publication Date
CN109038558A true CN109038558A (en) 2018-12-18
CN109038558B CN109038558B (en) 2020-05-15

Family

ID=64647644

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810870199.1A Active CN109038558B (en) 2018-08-02 2018-08-02 Power distribution network planning scheme safety evaluation method for simulating optimal control process

Country Status (1)

Country Link
CN (1) CN109038558B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116231674A (en) * 2023-01-13 2023-06-06 广东电网有限责任公司佛山供电局 Method and system for controlling on-load voltage regulation based on transformer
CN116404653A (en) * 2023-03-30 2023-07-07 广东电网有限责任公司佛山供电局 Method and system for on-load voltage regulation of transformer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102637289A (en) * 2012-04-16 2012-08-15 天津大学 Method for assessing safety value of planning scheme for electrical power system containing large-scale wind power
CN103839189A (en) * 2013-12-16 2014-06-04 广东电网公司中山供电局 Distribution automation scheme optimization method and system based on reliability benefit evaluation
US20160036225A1 (en) * 2014-07-10 2016-02-04 California Institute Of Technology Dynamic Frequency Control in Power Networks
CN105337288A (en) * 2014-05-29 2016-02-17 株式会社日立制作所 Reactive voltage optimization control apparatus and method
US20160170426A1 (en) * 2013-05-24 2016-06-16 Siemens Aktiengesellschaft Power Distribution Network And Method For Operation Thereof
CN106058857A (en) * 2016-06-30 2016-10-26 上海电力学院 Active distribution network reliability evaluation method with consideration of load transferring and load shedding
CN106253335A (en) * 2016-06-16 2016-12-21 上海交通大学 A kind of distributed power source capacity and on-position uncertain distribution network planning method
CN106329516A (en) * 2015-07-09 2017-01-11 中国电力科学研究院 Typical scene recognition based dynamic reconstruction method of power distribution network
CN106972501A (en) * 2016-01-13 2017-07-21 清华大学 A kind of method of power distribution network control
CN107196310A (en) * 2016-03-15 2017-09-22 中国电力科学研究院 The active distribution network Multiple Time Scales optimization method of consideration source net lotus coordination and interaction

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102637289A (en) * 2012-04-16 2012-08-15 天津大学 Method for assessing safety value of planning scheme for electrical power system containing large-scale wind power
US20160170426A1 (en) * 2013-05-24 2016-06-16 Siemens Aktiengesellschaft Power Distribution Network And Method For Operation Thereof
CN103839189A (en) * 2013-12-16 2014-06-04 广东电网公司中山供电局 Distribution automation scheme optimization method and system based on reliability benefit evaluation
CN105337288A (en) * 2014-05-29 2016-02-17 株式会社日立制作所 Reactive voltage optimization control apparatus and method
US20160036225A1 (en) * 2014-07-10 2016-02-04 California Institute Of Technology Dynamic Frequency Control in Power Networks
CN106329516A (en) * 2015-07-09 2017-01-11 中国电力科学研究院 Typical scene recognition based dynamic reconstruction method of power distribution network
CN106972501A (en) * 2016-01-13 2017-07-21 清华大学 A kind of method of power distribution network control
CN107196310A (en) * 2016-03-15 2017-09-22 中国电力科学研究院 The active distribution network Multiple Time Scales optimization method of consideration source net lotus coordination and interaction
CN106253335A (en) * 2016-06-16 2016-12-21 上海交通大学 A kind of distributed power source capacity and on-position uncertain distribution network planning method
CN106058857A (en) * 2016-06-30 2016-10-26 上海电力学院 Active distribution network reliability evaluation method with consideration of load transferring and load shedding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JINGPING ZHANG ET AL.: "Optimal Operation of Hydropower Station Unit Based on Ant ColonyAlgorithm", 《2010 SIXTH INTERNATIONAL CONFERENCE ON NATURAL COMPUTATION (ICNC 2010) 》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116231674A (en) * 2023-01-13 2023-06-06 广东电网有限责任公司佛山供电局 Method and system for controlling on-load voltage regulation based on transformer
CN116231674B (en) * 2023-01-13 2024-03-29 广东电网有限责任公司佛山供电局 Method and system for controlling on-load voltage regulation based on transformer
CN116404653A (en) * 2023-03-30 2023-07-07 广东电网有限责任公司佛山供电局 Method and system for on-load voltage regulation of transformer
CN116404653B (en) * 2023-03-30 2024-02-02 广东电网有限责任公司佛山供电局 Method and system for on-load voltage regulation of transformer

Also Published As

Publication number Publication date
CN109038558B (en) 2020-05-15

Similar Documents

Publication Publication Date Title
CN113269371A (en) Method and system for evaluating comprehensive performance of power supply of intelligent power distribution network
CN104037793B (en) A kind of energy-storage units capacity collocation method being applied to active distribution network
CN105226664B (en) A kind of active distribution network reactive voltage layer distributed control method for coordinating
CN110445130B (en) Static Voltage Stability Margin Calculation Device Considering Optimal Reactive Power Support
Iurilli et al. SoC management strategies in battery energy storage system providing primary control reserve
CN106992519B (en) A Robust Optimization Method for Power Grid Load Restoration Based on Information Gap Decision Theory
CN109636009B (en) Method and system for establishing neural network model for determining line loss of power grid
CN104779630A (en) Capacity allocation method for hybrid energy storage system capable of restraining wind power output power fluctuation
CN102055191A (en) Wide area load shedding control method for quiescent voltage stabilization considering external power grid equivalence
CN110137988B (en) Method and system for constant capacity and location selection planning for active distribution network energy storage system with photovoltaics
CN105186525A (en) Reactive voltage control partitioning method under wind power integration
CN106992325A (en) Battery module charge/discharge control method and battery system
CN115313403A (en) Real-time voltage regulation and control method based on deep reinforcement learning algorithm
CN109299830A (en) A hydrological forecast system and method based on moisture monitoring
CN113437756A (en) Micro-grid optimization configuration method considering static voltage stability of power distribution network
CN102170131A (en) Limit power calculating method of associated electricity transmission cross-section based on parallel calculating model
CN109038558A (en) Simulate the power distribution network planning scheme security assessment method of optimum control process
CN110994589B (en) Online evaluation method and system for frequency modulation capability of power electronic access power system
CN116031887A (en) A method, system, device and medium for generating data of power grid simulation analysis examples
CN119813229A (en) A method and system for intelligent control of power flow in coordinated power grid with full resources
CN108695859A (en) A kind of capacitor group addressing constant volume method of access active distribution network
CN113708421A (en) Improved two-stage robust operation optimization method and system for flexible power distribution network
Nguyen-Tuan et al. A novel approach to optimize and allocate battery energy storage system in distributed grid considering impact of demand response program
CN108711886A (en) Sort run sample generating method when a kind of garden distribution
CN114123355A (en) Photovoltaic high-permeability voltage control method and system based on platform area intelligent terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant