CN116979581B - Energy storage system capable of reducing light rejection and operation method thereof - Google Patents
Energy storage system capable of reducing light rejection and operation method thereof Download PDFInfo
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- CN116979581B CN116979581B CN202310818147.0A CN202310818147A CN116979581B CN 116979581 B CN116979581 B CN 116979581B CN 202310818147 A CN202310818147 A CN 202310818147A CN 116979581 B CN116979581 B CN 116979581B
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Abstract
The invention discloses an energy storage system capable of reducing waste light and an operation method thereof, wherein the energy storage system comprises a battery rack, a PACK plug box, a fire-fighting mechanism, a heat dissipation mechanism, an energy storage converter, an EMS system cabinet and a box body; the battery clusters are connected to the direct current side of the energy storage converter through wires, the alternating current side of the energy storage converter is connected with a power grid where the photovoltaic power station is located through an alternating current cable, the EMS system cabinet is in control connection with the energy storage converter, and the fire-fighting mechanism enables the vacuum state to be generated in the box body, so that fire extinguishment is achieved, and safety performance is improved; wind in carrying the box through the cooling of cooling body forms cold wind after the cooling of coolant liquid, cools down in to the box, keeps best operational environment, and this energy storage system can judge whether photovoltaic power generation produces abandon the light phenomenon by EMS system cabinet, lightens the harm that the electric wire netting is undulant and the electric wire netting is undulant bring to generator and consumer, and the security performance is high, and operating stability is strong, and the energy consumption is low.
Description
Technical Field
The invention relates to the technical field of photovoltaic energy storage, in particular to an energy storage system capable of reducing waste light and an operation method thereof.
Background
The development of the photovoltaic power generation is rapid, the country and the place have larger supporting force on the photovoltaic industry, the promotion of the photovoltaic technology is very happy, but the popularization of the photovoltaic power generation has the problems of road blocking stones and light rejection. The photovoltaic power generation 'light rejection' is that the generated energy of a photovoltaic power station is larger than the maximum transmission electric quantity of a power system and the load dissipation electric quantity. For example, in a factory setting or in a noon break period, the photovoltaic power generation amount is large, the factory load cannot be absorbed, and large waste exists; in order to solve the problem of photovoltaic 'light abandoning', an energy storage system is provided, the energy storage system is provided with a period of high illumination intensity and low electricity consumption, redundant photovoltaic generated energy is stored in the energy storage system, electric energy in the energy storage system is transmitted to a power grid in the period of low illumination intensity (such as in the evening or in rainy days) and the period of high electricity consumption, the energy storage system has different electricity from tens of degrees to tens of thousands of degrees in terms of capacity, and the light abandoning phenomenon can be effectively reduced by configuring the energy storage system with proper capacity according to different photovoltaic power station power. The existing energy storage system has the defects of low operation safety performance, excessively high energy consumption when the energy storage system is cooled by external equipment, and the like.
Therefore, we have devised an energy storage system and a method for operating the same that can reduce the amount of waste light to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects of high heat dissipation energy consumption and operation safety to be improved of an energy storage system in the prior art, and provides an energy storage system capable of reducing waste light and an operation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
An energy storage system capable of reducing light rejection comprises a battery frame, a PACK plug box, a fire-fighting mechanism, a heat dissipation mechanism, an energy storage converter, an EMS system cabinet and a box body; the battery rack is inserted with a plurality of PACK plug boxes, the battery rack is arranged in the box body, energy storage batteries are arranged in the PACK plug boxes, each PACK plug box on the single battery rack is connected with each other through a wire to form a battery cluster, the battery cluster is connected to the direct current side of the energy storage converter through a wire, the alternating current side of the energy storage converter is connected with a power grid where a photovoltaic power station is located through an alternating current cable, the EMS system cabinet is in control connection with the energy storage converter, the fire-fighting mechanism is an exhaust mechanism with a vacuum pump and is arranged in the box body, the heat dissipation mechanism is arranged under the ground below the box body, wind conveyed into the box body through the heat dissipation mechanism is cooled through cooling liquid to form cold wind, and the temperature in the box body is lowered; the fire-fighting mechanism and the heat-dissipating mechanism are used in linkage and cooperation, after a certain negative pressure environment is formed in the box body under the operation of a vacuum pump of the fire-fighting mechanism, the heat-dissipating mechanism is automatically started, and outside air is blown into the box body for cooling after heat exchange by the heat-dissipating mechanism to form cold air; when a fire disaster occurs, the heat dissipation mechanism is blocked to enter the gas passage in the box body, so that a sealed environment is formed in the box body, the vacuum pump is accelerated to run, the box body is vacuumized, and the fire extinguishing effect is achieved. .
Further, a plurality of fans are uniformly arranged on two sides of the battery frame, a wiring terminal is arranged on one side of the battery frame, one end of the wiring terminal is connected with the battery cluster, and the other end of the wiring terminal is connected with the direct current side of the energy storage converter.
Further, the fire control mechanism includes vacuum machine case, inlet scoop, air exit and fire alarm detector, the vacuum machine incasement is provided with the vacuum machine pump, the inlet end of vacuum machine pump passes through the pipeline with each the inlet scoop intercommunication, the end of giving vent to anger with the air exit intercommunication, the vacuum machine case is installed on the wall of box, the air exit sets up in the outside of box, the inlet scoop evenly arranges a plurality of columns along box axis direction, inlet scoop and pipeline installation are in the bottom plate downside of box, the air scoop end exposes at the up end of the bottom plate of box to keep the parallel and level with the bottom plate up end of box, the air scoop end cover of inlet scoop is equipped with the dust screen, a plurality of for monitoring box fire alarm detector sets up in the top and the lower part in the box.
Further, the heat dissipation mechanism comprises a cooling pool, a heat exchanger, an air inlet channel, an air exhaust main pipe, a gas passage cut-off box and an air outlet branch pipe; the cooling tank is of a closed cavity structure arranged below the ground, cooling liquid is contained in the cooling tank, the heat exchanger is immersed in the cooling liquid, the upper top surface of the cooling tank is provided with an air inlet channel and an air exhaust main pipe, the air inlet channel introduces external air into the cooling tank, one end of the air exhaust main pipe is arranged in the tank and connected with the air outlet branch pipes, the other end of the air exhaust main pipe is arranged inside the cooling tank and connected with the outlet ends of air channel branch pipes on the heat exchanger, one end of the heat exchanger is a cooling air inlet end, an opening of the cooling air inlet end is positioned inside the cooling tank, the air outlet end of the other end of the heat exchanger is communicated with the air exhaust main pipe through the air channel branch pipes, the air outlet end of the air channel cut-off box is communicated with the air outlet branch pipes, the air outlet branch pipes of the other end of the air channel cut-off box are arranged in a plurality of the tank, the air outlet branch pipes are bent downwards and distributed in a circumference, the air channel cut-off box is internally provided with a drying box for dehumidifying and drying cold air, and the air inlet end of the air channel is bent downwards in the opening direction.
Further, the cooling pond is buried in seven to ten meters depths below the ground, reinforced concrete is adopted for pouring, personnel can enter and exit the cooling pond through a pipe well, a sealing door is arranged at the inlet of the pipe well, and a water pipe for conveying or extracting cooling liquid for the cooling pond is arranged beside the pipe well.
Further, the heat exchangers are communicated with the main exhaust pipe in a serial or parallel mode, and when the heat exchangers are connected in a serial mode, the air outlet end of the previous heat exchanger is connected in series with the cooling air inlet end of the next heat exchanger in a mode of being communicated with the air channel branch pipe, and the air outlet end of the last heat exchanger is communicated with the main exhaust pipe through the air channel branch pipe; when the heat exchangers are connected in parallel, the air outlet end of each heat exchanger is communicated with the air exhaust main pipe through the air passage branch pipe.
Further, the heat dissipation mechanism further comprises an air conditioner refrigerator for assisting in cooling the box body, the air conditioner refrigerator is hung on the outer wall of the box body, the air conditioner refrigerator is connected with the box body through a check valve, when the air conditioner refrigerator starts to operate, the check valve is in an open state, and when the air conditioner refrigerator is closed, the check valve is in a closed state.
Further, the fire-fighting mechanism and the heat dissipation mechanism are connected with a fire-fighting linkage control box for monitoring, regulating and controlling execution commands.
Furthermore, the inside of the wall of the box body adopts a heat insulation mode filled with heat insulation materials or vacuumized, so that the outside high temperature is prevented from entering the box body.
Further, the fire alarm detector comprises a smoke sensor, a temperature sensor, a flame sensor and a gas sensor, and converts the temperature, smoke, gas and radiation intensity in the box body into electric signals and transmits the electric signals to a control system in the fire control linkage control box.
A method of operating an energy storage system that reduces light rejection, the method comprising:
the EMS system cabinet regulates and controls the operation mode of the energy storage system by reading data of the ammeter, when the load of the power grid is insufficient to consume the generated energy of the photovoltaic power, the EMS system cabinet controls the energy storage converter to absorb the electric energy generated by the photovoltaic power station from the power grid, the electric energy is stored in the PACK plug box and flows to the energy storage system from the power grid, and when the EMS system cabinet judges that the load recovers to be electrified by reading the data of the ammeter, the EMS system cabinet controls the energy storage converter to discharge the power grid, and the electric energy flows to the power grid from the energy storage system;
When the temperature in the box body reaches a certain temperature, starting a vacuum pump of a fire-fighting mechanism to operate, and discharging the gas in the box body to the outside through the air suction port, the pipeline and the air outlet to form negative pressure in the box body;
when a negative pressure environment is formed in the box body, the heat dissipation mechanism starts to operate, external air firstly enters the cooling tank through the air inlet channel and enters the heat exchanger through the cooling air inlet end, cold air is formed after heat of the external air is exchanged with heat of cooling liquid in the cooling tank, the cold air enters the box body along the air path branch pipe and the air exhaust main pipe, the cold air is purged from top to bottom in a plurality of directions in the box body through the air outlet branch pipe, and meanwhile, the vacuum pump operates to continuously operate to extract gas in the box body, so that the gas in the box body circulates, and the cooling effect is achieved;
When the fire alarm detector detects that the smoke concentration in the box body exceeds the standard and carries out high-temperature abnormal early warning, the linkage control system in the fire-fighting linkage control box sends a fire alarm regulation and control command to the fire-fighting mechanism and the heat dissipation mechanism, the gas passage cut-off box closes the passage of the main exhaust pipe to cut off the gas transmission from the outside to the inside of the box body, and meanwhile, the vacuum pump of the fire-fighting mechanism is accelerated to run, so that the inside of the box body is in a vacuum state in a short time, and the fire-extinguishing effect is realized.
Further, the heat dissipation mechanism adjusts the running state according to the temperature in the box, and under the lower environment of temperature in winter, the heat dissipation mechanism stops running, adopts the fan of battery rack both sides to exhaust to cool down to the PACK subrack, and when the extreme weather in summer is under the unusual high temperature in the box, when adopting forced air cooling to be difficult to cool down, starts the air conditioner refrigerator and carries out supplementary cooling to the box inside and handle, closes the air conditioner refrigerator after the temperature drops.
Compared with the prior art, the invention has the beneficial effects that: the energy storage system provided by the invention can reduce the light rejection phenomenon, and has the advantages of high safety performance, strong operation stability and low energy consumption; whether the photovoltaic power generation generates the light rejection phenomenon or not can be judged by the EMS system cabinet, and the charging and discharging of the energy storage system are controlled according to the light rejection phenomenon, so that the light rejection phenomenon is reduced, and meanwhile, the power grid fluctuation and the damage of the power grid fluctuation to the power generator and the electric equipment can be reduced; according to the invention, the fire-fighting mechanism and the heat dissipation mechanism are used in a linkage mode, under the operation of a vacuum pump of the fire-fighting mechanism, when a certain negative pressure environment is formed in the box body, the heat dissipation mechanism is automatically started, external air is subjected to heat exchange through the heat exchanger to form cold air, and the cold air is blown into the box body, so that the temperature in the box body is regulated, and the energy consumption and the operation cost of the energy storage system are greatly reduced; in addition, through closing the gas passageway that gets into the inside box, make the box in form sealed environment, when the conflagration takes place, with the help of the vacuum pump of fire control mechanism with the interior evacuation state that becomes of box, on the one hand can reach the effect of putting out a fire, on the other hand has reduced the destruction of conflagration to each equipment in the box to a certain extent, has also avoided adopting other fire extinguishing methods to the secondary damage of equipment in the box simultaneously.
Drawings
FIG. 1 is a schematic diagram of an external structure of an energy storage system case capable of reducing light rejection according to the present invention;
FIG. 2 is a schematic diagram illustrating the structure of the cooling tank of the energy storage system capable of reducing the waste light according to the present invention;
FIG. 3 is a schematic diagram illustrating an internal structure of an energy storage system box capable of reducing light rejection according to the present invention;
FIG. 4 is a layout diagram of an air-out branch pipe of an energy storage system capable of reducing waste light;
FIG. 5 is a schematic diagram showing an air intake of an energy storage system capable of reducing waste light according to the present invention;
fig. 6 is a schematic diagram of an installation structure of a battery rack and a PACK jack of an energy storage system capable of reducing light rejection.
The reference numerals in the drawings: 100. a battery holder; 101. PACK jack; 102. a battery cluster; 103. a fan; 104. a connection terminal; 200. a fire-fighting mechanism; 201. a vacuum cabinet; 202. an air suction port; 203. a pipeline; 204. an air outlet; 205. a fire alarm detector; 300. a heat dissipation mechanism; 301. a cooling pool; 302. a heat exchanger; 303. an air intake passage; 304. an exhaust main pipe; 305. a gas passage shutoff box; 306. an air outlet branch pipe; 307. a gas path branch pipe; 308. cooling the air inlet end; 309. a pipe well; 310. a water pipe; 311. an air conditioner refrigerator; 400. an energy storage converter; 500. EMS system cabinet; 600. a case; 700. ground surface.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Aiming at the problem of light rejection in the photovoltaic power generation process, although an energy storage system is already developed, the conventional energy storage system still has the defects of insufficient safety and high operation cost; therefore, the embodiment provides an energy storage system with high safety and low operation cost, which can reduce the light rejection, as shown in fig. 1-6, the energy storage system comprises a battery rack 100, a PACK jack 101, a fire protection mechanism 200, a heat dissipation mechanism 300, an energy storage converter 400, an EMS system cabinet 500 and a box 600; the inside of the wall of the case 600 is heat-insulated by filling with a heat-insulating material or vacuum-pumping, so that the outside high temperature is prevented from entering the case 600. A plurality of PACK boxes 101 are inserted on a battery rack 100, the battery rack 100 is installed in a box 600, energy storage batteries are arranged in the PACK boxes 101, in the embodiment, the energy storage batteries can be connected between the PACK boxes 101 on a single battery rack 100 by adopting wires to form a battery cluster 102, the battery cluster 102 is connected to the direct current side of an energy storage converter 400 by the wires, the alternating current side of the energy storage converter 400 is connected with a power grid where a photovoltaic power station is located by an alternating current cable, an EMS system cabinet 500 and the energy storage converter 400 are in control connection, a fire protection mechanism 200 is arranged in the box 600 and is an exhaust mechanism with a vacuum pump, so that a vacuum state is generated in the box 600, a heat dissipation mechanism 300 is arranged below the ground 700 below the box 600, and cooling air conveyed into the box 600 by the heat dissipation mechanism 300 is cooled by cooling liquid to form cold air, so that the inside the box 600 is cooled; the fire-fighting mechanism 200 and the heat dissipation mechanism 300 are used in a linkage fit, after a certain negative pressure environment is formed in the box body 600 under the operation of a vacuum pump of the fire-fighting mechanism 200, the heat dissipation mechanism 300 is automatically started, and outside air is subjected to heat exchange by the heat dissipation mechanism 300 to form cold air, and the cold air is blown into the box body 600 to cool, so that the temperature regulation effect in the box body 600 is achieved; when a fire occurs, the heat dissipation mechanism 300 is blocked from entering the air passage in the box body 600, so that a sealed environment is formed in the box body 600, the vacuum pump is accelerated to run, and the box body 600 is vacuumized, so that a fire extinguishing effect is achieved. .
In order to maintain the cooling performance of the PACK plug-in box 101, a plurality of fans 103 are uniformly arranged on two sides of the battery frame 100, the fans 103 blow wind on two sides of the battery frame 100 to the PACK plug-in box 101, the cooling effect of the PACK plug-in box 101 is accelerated, in order to facilitate installation connection, a connecting terminal 104 is arranged on one side of the battery frame 100, one end of the connecting terminal 104 is connected with a battery cluster 102, and the other end is connected with the direct current side of the energy storage converter 400.
As shown in fig. 3 and 5, the fire-fighting mechanism 200 comprises a vacuum cabinet 201, an air suction inlet 202, an air exhaust outlet 204 and a fire alarm detector 205, wherein a vacuum pump is arranged in the vacuum cabinet 201, on one hand, the vacuum pump is used for pumping high-temperature gas in the cabinet 600 to be discharged to the outside, and on the other hand, when the cabinet 600 is in a sealed state, the vacuum pump is also used for pumping air in the cabinet 600, so that the cabinet 600 is in a vacuum state, the combustion condition is eliminated, and the fire extinguishing effect is achieved; the air inlet end of the vacuum pump is communicated with each air suction opening 202 through a pipeline 203, the air outlet end is communicated with an air outlet 204, the vacuum cabinet 201 is arranged on the wall of the box 600, the air outlet 204 is arranged on the outer side of the box 600, the air suction openings 202 are uniformly distributed in a plurality of rows along the axis direction of the box 600, the air suction openings 202 and the pipeline 203 are arranged on the lower side of the bottom plate of the box 600, the air outlet ends of the air suction openings 202 are exposed out of the upper end face of the bottom plate of the box 600 and keep flush with the upper end face of the bottom plate of the box 600, a dust screen is covered at the air outlet end of the air suction openings 202, a plurality of fire alarm detectors 205 for monitoring the fire alarm of the box 600 are arranged at a plurality of positions above and below the box 600, so that the fire alarm detectors 205 comprise smoke sensors, temperature sensors, flame sensors and gas sensors, and convert the temperature, smoke, gas and radiation in the box 600 into electric signals, and transmit the electric signals to a control system in a fire control box.
As shown in fig. 1, 2 and 4, the heat radiation mechanism 300 includes a cooling tank 301, a heat exchanger 302, an intake passage 303, an exhaust main pipe 304, a gas passage shutoff box 305, and an exhaust branch pipe 306; the cooling tank 301 is of a closed cavity structure arranged below the ground 700, cooling liquid is contained in the cooling tank 301, a heat exchanger 302 is immersed in the cooling liquid, an air inlet channel 303 and an air exhaust main pipe 304 are arranged on the upper top surface of the cooling tank 301, external air is introduced into the cooling tank 301 through the air inlet channel 303, one end of the air exhaust main pipe 304 is arranged in the box 600, an air outlet branch pipe 306 is arranged, the other end of the air exhaust main pipe 304 is arranged in the cooling tank 301 and connected with the outlet end of an air channel branch pipe 307 on the heat exchanger 302, a plurality of heat exchangers 302 are arranged at one end of the heat exchanger 302, a cooling air inlet end 308 is arranged at one end of the heat exchanger 302, an opening of the cooling air inlet end 308 is arranged in the cooling tank 301, an air outlet end at the other end of the heat exchanger is communicated with the air exhaust main pipe 304 through the air channel branch pipe 307, an air passage cut-off box 305 is arranged at the top of the box 600, the air inlet end of one end of the heat exchanger is communicated with the air outlet main pipe 304, the air outlet end of the other end of the heat exchanger is communicated with the air outlet branch pipe 306, a plurality of air outlet branch pipes 306 are arranged, the air outlet ends of the air outlet branch pipes 306 are bent downwards and are circumferentially distributed, a drying box for drying cold air is arranged in the cooling box 303, the air inlet opening at the upper end of the inlet end of the air inlet channel is bent towards the inlet opening of the opening, and the opening of the air inlet end is prevented from entering the cooling air channel 301.
Because the temperature of the place seven to ten meters underground is kept at about 15 ℃ throughout the year, in high temperature weather, the underground low-temperature environment is adopted, heat transfer can be carried out on the cooling liquid in the cooling tank 301, external air enters the cooling tank 301, then heat exchange is carried out through the heat exchanger 302, cooling treatment is carried out, hot air is changed into cold air, the cold air becomes a low-power-consumption air cooling machine, the energy storage system can be cooled and operated throughout the year, the cooling tank 301 in the embodiment is buried in the place seven to ten meters below the ground 700, reinforced concrete pouring is adopted, personnel access to the cooling tank 301 is realized through a pipe well 309, a sealing door is arranged at the inlet of the pipe well 309, a water pipe 310 for conveying or extracting the cooling liquid for the cooling tank 301 is arranged beside the pipe well 309, and the heat of the cooling liquid in the cooling tank 301 can be transferred to the ground through the cooling tank 310, namely, the temperature of the cooling liquid can be kept consistent with the temperature of the place seven to ten meters underground through the underground environment all the time.
According to the actual use requirement, the heat exchangers 302 are communicated with the main exhaust pipe 304 in a serial or parallel mode, and when the heat exchangers are connected in a serial mode, the air outlet end of the previous heat exchanger 302 is connected in series with the cooling air inlet end 308 of the next heat exchanger 302 in a communication mode through the air channel branch pipe 307, and the air outlet end of the last heat exchanger 302 is communicated with the main exhaust pipe 304 through the air channel branch pipe 307; when connected in parallel, the air outlet end of each heat exchanger 302 is communicated with the main air exhaust pipe 304 through the air path branch pipe 307.
In order to cope with the extremely high temperature weather of short term in summer, avoid the cooling task in the box 600 that is difficult to accomplish through cooling mechanism 300, cooling mechanism 300 of this implementation still includes the air conditioner refrigerator 311 that is used for assisting the cooling in the box 600, and air conditioner refrigerator 311 hangs and establishes on the box 600 outer wall, and through adopting the check valve to connect between air conditioner refrigerator 311 and the box 600, when air conditioner refrigerator 311 starts the operation, the check valve is open-phase, and when air conditioner refrigerator 311 closed, the check valve is closed-phase.
The fire-fighting linkage control box is further arranged in the implementation and is used for monitoring, regulating and controlling and executing fire monitoring and executing commands of all mechanisms, the fire-fighting mechanism 200 and the heat dissipation mechanism 300 are connected with the fire-fighting linkage control box, a fire-fighting linkage control system is arranged in the fire-fighting linkage control box and is in linkage control with the vacuum pump in the fire-fighting mechanism 200, the fire alarm detector 205 and the gas passage cut-off box 305 of the heat dissipation mechanism 300, and the air conditioning refrigerator 311.
Example 2
The embodiment further provides an operation method of the energy storage system capable of reducing the waste light based on the first embodiment, wherein the operation method comprises the following steps:
The EMS system cabinet 500 regulates and controls the operation mode of the energy storage system by reading data of electric meters (total electric meter, secondary total electric meter, photovoltaic electric meter, load electric meter and the like), when the load of the power grid is insufficient to consume photovoltaic generated energy, the EMS system cabinet 500 controls the energy storage converter 400 to absorb electric energy generated by the photovoltaic power station from the power grid, the electric energy is stored in the PACK plug box 101, the electric energy flows from the power grid to the energy storage system, and when the EMS system cabinet 500 judges that the load recovers to be electrified by reading the data of the electric meter, the EMS system cabinet 500 controls the energy storage converter 400 to discharge the power grid, and the electric energy flows from the energy storage system to the power grid.
When the temperature in the box 600 reaches a certain temperature, the vacuum pump of the fire-fighting mechanism 200 is started to operate, and the gas in the box 600 is discharged to the outside through the air suction port 202, the pipeline 203 and the air outlet 204, so that negative pressure is formed in the box 600.
When a negative pressure environment is formed in the box 600, suction force is generated, the heat dissipation mechanism 300 starts to operate, external air firstly enters the cooling pond 301 through the air inlet channel 303, and enters the heat exchanger 302 through the cooling air inlet end 308, cold air is formed after heat of the external air is exchanged with heat of cooling liquid in the cooling pond 301, the cold air enters the box 600 along the air path branch pipe 307 and the air exhaust main pipe 304, and is purged downwards from top to bottom in a plurality of directions in the box 600 through the air outlet branch pipe 306, and meanwhile, the vacuum pump operates to continuously operate to extract gas in the box 600, so that the gas in the box 600 circulates, and the cooling effect is achieved.
The heat dissipation mechanism 300 adjusts the operation state according to the temperature in the box 600, under the environment that the temperature is lower in winter, the heat dissipation mechanism 300 stops running, adopts the fans 103 at two sides of the battery rack 100 to exhaust air and cool the PACK plug-in box 101, when the temperature in the box 600 is abnormally higher in extreme weather in summer, when the temperature is difficult to cool by adopting air cooling, the air conditioner refrigerator 311 is started to carry out auxiliary cooling treatment on the interior of the box 600, and when the temperature is reduced, the air conditioner refrigerator 311 is closed.
When the fire alarm detector 205 detects that the smoke concentration in the box body 600 exceeds the standard and carries out early warning along with high-temperature abnormality, the linkage control system in the fire-fighting linkage control box sends a fire alarm control command to the fire-fighting mechanism 200 and the heat dissipation mechanism 300, the gas passage cut-off box 305 closes the passage of the main exhaust pipe 304, the gas transmission to the interior of the box body 600 from the outside is stopped, and meanwhile, the vacuum pump of the fire-fighting mechanism 200 is accelerated to run, so that the interior of the box body 600 is in a vacuum state in a short time, and the fire extinguishing effect is realized.
According to the energy storage system provided by the embodiment, on one hand, whether the photovoltaic power generation generates the light abandoning phenomenon can be judged by the EMS system cabinet 500, and the charging and discharging of the energy storage system are controlled according to the light abandoning phenomenon, so that the light abandoning is reduced, the coal burning requirement of a thermal power plant is reduced, the carbon emission is reduced, and meanwhile, the power grid fluctuation and the damage of the power grid fluctuation to the generator and the electric equipment can be reduced; on the other hand, by means of the linkage cooperation of the fire-fighting mechanism 200 and the heat-dissipating mechanism 300, under the operation of a vacuum pump of the fire-fighting mechanism 200, when a certain negative pressure environment is formed in the box body 600, the heat-dissipating mechanism 300 is automatically started, external air is subjected to heat exchange through the heat exchanger 302 to form cold air, and the cold air is blown into the box body 600, so that the temperature in the box body 600 is regulated, and the energy consumption and the operation cost of the energy storage system are greatly reduced; in addition, by closing the main air exhaust pipe 304 entering the inside of the box 600, a sealed environment is formed in the box 600, and when a fire disaster occurs, the inside of the box 600 is pumped into a vacuum state by the vacuum pump of the fire-fighting mechanism 200, so as to achieve the fire extinguishing effect, reduce the damage of the fire disaster to various devices in the box 600 to a certain extent, and avoid the secondary damage of other fire extinguishing modes (such as water fire extinguishing, carbon dioxide dry powder fire extinguishing and the like) to the devices in the box 600.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. An energy storage system capable of reducing light rejection is characterized by comprising a battery frame (100), a PACK plug box (101), a fire-fighting mechanism (200), a heat dissipation mechanism (300), an energy storage converter (400), an EMS system cabinet (500) and a box body (600); a plurality of PACK plug boxes (101) are inserted into the battery rack (100), the battery rack (100) is installed in the box body (600), energy storage batteries are arranged in the PACK plug boxes (101), each PACK plug box (101) on each battery rack (100) is connected with each other through a wire to form a battery cluster (102), the battery clusters (102) are connected to the direct current side of the energy storage converter (400) through the wires, the alternating current side of the energy storage converter (400) is connected with a power grid where a photovoltaic power station is located through an alternating current cable, the EMS system cabinet (500) is in control connection with the energy storage converter (400), the fire control mechanism (200) is an exhaust mechanism with a vacuum pump and is arranged in the box body (600), the heat dissipation mechanism (300) is arranged under the ground (700) below the box body (600), and air conveyed into the box body (600) through the heat dissipation mechanism (300) is cooled through cooling liquid to cool the cold air; the fire-fighting mechanism (200) is used in linkage with the heat-dissipating mechanism (300), after a certain negative pressure environment is formed in the box body (600) under the operation of a vacuum pump of the fire-fighting mechanism (200), the heat-dissipating mechanism (300) is automatically started, and outside air is blown into the box body (600) for cooling after heat exchange of the heat-dissipating mechanism (300) to form cold air; when a fire disaster occurs, a sealed environment is formed in the box body (600) by blocking a gas passage of the heat dissipation mechanism (300) entering the box body (600), and a vacuum pump is accelerated to run so as to vacuumize the box body (600) to achieve the fire extinguishing effect;
The heat dissipation mechanism (300) comprises a cooling tank (301), a heat exchanger (302), an air inlet channel (303), an air exhaust main pipe (304), a gas passage cut-off box (305) and an air outlet branch pipe (306); the cooling pool (301) is of a closed cavity structure arranged below the ground (700), cooling liquid is contained in the cooling pool (301), the heat exchanger (302) is immersed in the cooling liquid, the air inlet channel (303) and the air exhaust main pipe (304) are arranged on the upper top surface of the cooling pool (301), the air inlet channel (303) introduces external air into the cooling pool (301), one end of the air exhaust main pipe (304) is arranged in the box body (600) and is provided with the air outlet branch pipe (306), the other end of the air exhaust main pipe (304) is arranged in the cooling pool (301) and is connected with the outlet end of the air channel branch pipe (307) on the heat exchanger (302), one end of the heat exchanger (302) is a cooling air inlet end (308), the opening of the cooling air inlet end (308) is arranged in the cooling pool (301), the air outlet end of the other end is communicated with the air exhaust main pipe (304) through the air channel branch pipe (307), the air passage cut-off box (305) is arranged at the top of the box body (600), the air outlet end of one end of the air passage cut-off box (304) is communicated with the air outlet main pipe (306) in a bent mode, the air outlet ends of the branch pipe (306) are downwards distributed, the air outlet ends are distributed downwards, the air outlet ends of the branch pipe (306) are distributed downwards, the air outlet ends are distributed downwards, a drying box for dehumidifying and drying cold air is arranged in the air passage cut-off box (305), and the opening direction of the inlet at the upper end of the air inlet channel (303) is bent downwards;
The cooling pool (301) is buried in the depth of seven to ten meters below the ground (700), reinforced concrete is adopted for pouring, personnel can enter and exit the cooling pool (301) through a pipe well (309), a sealing door is arranged at the inlet of the pipe well (309), and a water pipe (310) for conveying or extracting cooling liquid for the cooling pool (301) is arranged beside the pipe well (309);
The heat exchangers (302) are communicated with the main exhaust pipe (304) in a serial or parallel mode, and when the heat exchangers are connected in a serial mode, the air outlet end of the last heat exchanger (302) is communicated with the main exhaust pipe (304) through the air passage branch pipe (307) according to the mode that the air outlet end of the previous heat exchanger (302) is communicated with the cooling air inlet end (308) of the next heat exchanger (302); when the heat exchangers are connected in parallel, the air outlet end of each heat exchanger (302) is communicated with the air exhaust main pipe (304) through the air passage branch pipe (307).
2. The energy storage system capable of reducing light rejection according to claim 1, wherein a plurality of fans (103) are uniformly arranged on two sides of the battery frame (100), a connecting terminal (104) is arranged on one side of the battery frame (100), one end of the connecting terminal (104) is connected with the battery cluster (102), and the other end is connected with the direct current side of the energy storage converter (400).
3. The energy storage system capable of reducing waste light according to claim 1, wherein the fire protection mechanism (200) comprises a vacuum cabinet (201), an air suction inlet (202), an air outlet (204) and fire alarm detectors (205), a vacuum pump is arranged in the vacuum cabinet (201), an air inlet end of the vacuum pump is communicated with each air suction inlet (202) through a pipeline (203), an air outlet end of the vacuum pump is communicated with the air outlet (204), the vacuum cabinet (201) is arranged on a cabinet wall of the cabinet (600), the air outlets (204) are arranged on the outer side of the cabinet (600), the air suction inlets (202) are uniformly distributed in a plurality of rows along the axis direction of the cabinet (600), the air suction inlets (202) and the pipelines (203) are arranged on the lower air bottom of the cabinet (600), air inlet ends of the air suction inlets (202) are exposed on the upper end face of the bottom plate of the cabinet (600), the air inlet end covers of the air suction inlets (202) are kept flush, dust-proof nets are arranged on the air inlet covers for detecting the fire alarm detectors (205) arranged on the upper fire alarm detectors (600) of the plurality of fire alarm detectors (600).
4. The energy storage system capable of reducing waste light according to claim 1, wherein the heat dissipation mechanism (300) further comprises an air conditioner refrigerator (311) for assisting in cooling in the box body (600), the air conditioner refrigerator (311) is hung on the outer wall of the box body (600), the air conditioner refrigerator (311) is connected with the box body (600) through a check valve, when the air conditioner refrigerator (311) is started to operate, the check valve is in an open state, and when the air conditioner refrigerator (311) is closed, the check valve is in a closed state.
5. The energy storage system for reducing waste light according to claim 1, wherein the fire protection mechanism (200) and the heat dissipation mechanism (300) are connected to a fire control linkage control box for monitoring and regulating execution commands.
6. A method of operating an energy storage system for reducing light rejection according to any one of claims 1 to 5, comprising:
The EMS system cabinet (500) regulates and controls the operation mode of the energy storage system by reading data of the ammeter, when the load of the power grid is insufficient to consume photovoltaic power generation capacity, the EMS system cabinet (500) controls the energy storage converter (400) to absorb electric energy generated by the photovoltaic power station from the power grid, the electric energy is stored in the PACK plug-in box (101), the electric energy flows into the energy storage system from the power grid, and when the EMS system cabinet (500) judges that the load recovers to be electrified by reading the data of the ammeter, the EMS system cabinet (500) controls the energy storage converter (400) to discharge the power grid, and the electric energy flows into the power grid from the energy storage system;
when the temperature in the box body (600) reaches high temperature, starting a vacuum pump of the fire-fighting mechanism (200) to operate, and discharging the gas in the box body (600) to the outside through the air suction port (202), the pipeline (203) and the air outlet (204) to form negative pressure in the box body (600);
When a negative pressure environment is formed in the box body (600), the heat dissipation mechanism (300) starts to operate, external air firstly enters the cooling tank (301) through the air inlet channel (303) and enters the heat exchanger (302) through the cooling air inlet end (308), cold air is formed after heat of the external air is exchanged with heat of cooling liquid in the cooling tank (301), the cold air enters the box body (600) along the air path branch pipe (307) and the air exhaust main pipe (304) and is blown downwards from top to bottom in a plurality of directions in the box body (600) through the air outlet branch pipe (306), and meanwhile, the vacuum pump continuously operates to extract gas in the box body (600), so that the gas in the box body (600) circulates to achieve the cooling effect;
When the fire alarm detector (205) detects that the smoke concentration in the box body (600) exceeds the standard and carries out early warning along with high temperature abnormality, a linkage control system in the fire control linkage control box sends a fire control command to the fire control mechanism (200) and the heat dissipation mechanism (300), the gas passage stop box (305) closes the passage of the main exhaust pipe (304) to stop the gas transmission in the box body (600) from the outside, and meanwhile, the vacuum pump of the fire control mechanism (200) is accelerated to run, so that the box body (600) is in a vacuum state in a short time, and the fire extinguishing effect is realized.
7. The method for operating the energy storage system capable of reducing the waste light according to claim 6, wherein the heat dissipation mechanism (300) adjusts the operating state according to the temperature in the box body (600), the heat dissipation mechanism (300) stops operating in an environment with low air temperature in winter, fans (103) on two sides of the battery rack (100) are adopted to exhaust air and cool the PACK plug-in box (101), when the temperature in the box body (600) is abnormally high in extreme weather in summer, when the temperature is difficult to be lowered by air cooling, the air conditioner refrigerator (311) is started to perform auxiliary cooling treatment on the interior of the box body (600), and when the temperature is lowered, the air conditioner refrigerator (311) is turned off.
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| CN118412585B (en) * | 2024-07-01 | 2024-08-27 | 新兴县消防救援大队 | Multi-stage fire-fighting safety prevention and control device for energy storage power station battery |
| CN119424976A (en) * | 2024-11-05 | 2025-02-14 | 柳州市龙杰汽车配件有限责任公司 | A high-safety energy storage shell |
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