CN110975204A - Energy storage cabin and control system thereof - Google Patents
Energy storage cabin and control system thereof Download PDFInfo
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- CN110975204A CN110975204A CN201911091025.6A CN201911091025A CN110975204A CN 110975204 A CN110975204 A CN 110975204A CN 201911091025 A CN201911091025 A CN 201911091025A CN 110975204 A CN110975204 A CN 110975204A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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Abstract
The invention relates to an energy storage cabin and a control system thereof, wherein the energy storage cabin comprises a plurality of battery racks and the control system, the control system comprises a fire fighting system, a battery system management unit and a battery management unit, the fire fighting system comprises a fire fighting pipeline and a fire fighting host, the fire fighting host is used for judging whether a fire occurs according to fire information outside a battery box, and the battery system management unit acquires the fire judgment information of the fire fighting host; the battery management unit is connected with a fire information sensor corresponding to the interior of the battery box in a sampling manner and sends the fire information in the battery box to the battery system management unit; the battery system management unit judges whether a fire occurs according to the fire information in the battery box, generates a final judgment result by combining the fire judgment information of the fire-fighting host, and controls the spraying device according to the control instruction of the final judgment result. Through the centralized and coordinated processing of the battery system management unit, the control can be more accurate, and the control efficiency and the control safety of the whole energy storage cabin are further improved.
Description
Technical Field
The invention relates to an energy storage cabin and a control system thereof.
Background
The prefabricated microgrid energy storage power station is characterized in that energy storage equipment, an energy storage converter, a local management and control system, a temperature and humidity management system and other power equipment are assembled in a movable steel box body, the prefabricated microgrid energy storage power station is an energy storage cabin, not only can be isolated from the interference of the external environment, but also can be prevented from being damaged or even stolen, and the position of a box type power station can be moved according to the condition so as to meet the reconstruction requirement.
However, in the process of using the electrochemical energy storage, because the electrochemical battery works according to chemical reaction, the risk of thermal runaway of the battery exists, large-area ignition is easily caused, and equipment and casualties are caused; and the energy storage power station can not work normally under the condition that the temperature is lower than minus 20 ℃, and the battery can be damaged even when the energy storage power station works at low temperature or is stored for a long time, so that huge potential safety hazards exist in the energy storage power station.
At present, in order to solve the problem of potential safety hazards, a battery management unit collects information such as temperature, smoke concentration and the like around a battery box managed by the battery management unit, and then the safety of the battery management unit is controlled by a security device of an independent system. When the battery temperature is out of control due to heat, each system can be independently controlled according to the acquired information of the system, so that the whole energy storage cabin can not be controlled in a coordinated and ordered manner, the fire can not be controlled in an ordered manner in a short time, the fire can not be effectively prevented from being further expanded, and the problems of inaccurate control, low efficiency and poor safety exist.
Disclosure of Invention
The invention aims to provide an energy storage cabin and a control system thereof, and aims to solve the problems of inaccurate control, low efficiency and poor safety of the conventional energy storage cabin.
In order to achieve the above object, the present invention provides a control system for an energy storage compartment, comprising:
the fire fighting system comprises a fire fighting pipeline and a fire fighting host, wherein the fire fighting pipeline is provided with a spraying device corresponding to each battery box; the fire fighting host is connected with all the fire information sensors outside the battery boxes in a sampling manner and used for judging whether a fire occurs according to the fire information outside the battery boxes;
the battery system management unit is in communication connection with the fire fighting host to acquire fire judgment information of the fire fighting host;
the battery system management unit is in communication connection with the battery management units of the battery boxes;
the battery management unit is connected with the fire information sensor inside the corresponding battery box in a sampling manner and sends the fire information inside the battery box to the battery system management unit; the battery system management unit judges whether a fire occurs according to the fire information in the battery box, generates a final judgment result by combining the fire judgment information of the fire-fighting host, and sends a control instruction to the corresponding battery management unit according to the final judgment result;
the battery management unit controls and is connected with the spraying device corresponding to the position of the battery box, and the battery management unit controls the spraying device to be turned on or turned off according to the control instruction.
Has the advantages that: according to the control system of the energy storage cabin, whether the fire information is acquired through the fire fighting host or the battery management unit, after the final judgment of the battery system management unit, if corresponding safety prevention and control are needed, the control is carried out in a centralized manner through the battery system management unit, the battery system management unit carries out fire extinguishing according to the spraying devices which coordinate and control all the battery boxes, accurate control can be carried out, and the control efficiency and the safety of the whole energy storage cabin are improved.
Furthermore, a heater is arranged at each corresponding battery box and connected with the battery management unit. The temperature of the battery box can be improved by heating the heater in a low-temperature environment, so that the battery can be ensured to be in a reasonable working temperature range.
Further, the spraying device is a high-pressure water mist device.
Further, the battery management unit controls a nozzle of the high-pressure water mist device to spray through a control valve. The battery system management unit controls the high-pressure fine water mist device through the control valve in communication connection with the battery management unit, the problem that the existing high-pressure fine water mist device needs one set of independent system is avoided, cost is saved, signals do not need to be generated to the controller of the high-pressure fine water mist fire extinguishing system, and control is direct and efficient.
Further, still include the fan, battery system management unit control connection the fan sets up the fan and can control the cooling in advance before the condition of a fire does not take place, and battery system management unit can prevent the emergence of the condition of a fire, improves the security in energy storage cabin.
Further, the fire sensor comprises a smoke detector and a temperature detector. Can detect inside and outside smog concentration information and the temperature information of battery box for whether judge the condition of a fire, perhaps carry out effectual control in advance according to the condition of a fire information and prevent to take place the conflagration.
In order to achieve the above object, the present invention provides an energy storage compartment, comprising: the energy storage cabin comprises a plurality of battery racks and a control system, wherein a plurality of battery boxes are placed on each battery rack, and the control system is the control system of the energy storage cabin.
Has the advantages that: according to the energy storage cabin, through the control system, whether the fire information is acquired through the fire fighting host or the battery management unit, after the final judgment of the battery system management unit, if corresponding safety prevention and control are needed, the control is carried out through the battery system management unit in a centralized manner, the battery system management unit coordinately controls the spraying devices of the battery boxes to extinguish the fire, accurate control can be carried out, and the safety of the whole energy storage cabin is further improved.
Drawings
FIG. 1 is a diagram of a communication system architecture for an energy storage compartment according to the present invention;
FIG. 2 is a logic diagram of cooling regulation control of the battery management system of the present invention;
FIG. 3 is a logic diagram of temperature rise regulation control of the battery management system of the present invention;
FIG. 4 is a logic diagram of the battery management system and the fire extinguishing apparatus in linkage control;
fig. 5 is a logic diagram of the linkage control of the battery management system and the microgrid control system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.
The technical conception of the invention is as follows: the collected information is processed in a centralized mode through the battery system management unit, the security system is coordinated and controlled to achieve a corresponding control strategy, accurate control is conducted, and therefore the efficiency and safety of control of the whole energy storage cabin are improved.
Energy storage cabin embodiment:
the energy storage cabin comprises a plurality of battery racks and a control system as shown in figure 1, wherein one battery management unit corresponds to the plurality of battery racks, and a plurality of battery boxes which are inserted are arranged on each battery rack; the control system comprises a battery system management unit, a battery management unit, a fire sensor and a fire fighting system. The fire fighting system comprises a fire fighting pipeline and a fire fighting host, and the fire fighting pipeline is provided with a spraying device corresponding to each battery box; and the battery system management unit realizes corresponding coordination management control through the fire fighting system according to the fire information. The energy storage cabin is also reserved with interfaces for wind power generation, photovoltaic power generation and diesel power generation, and can be suitable for low-voltage 400V alternating-current voltage grades. Can be applied to severe environments such as high altitude, high humidity, high temperature and the like.
The fire sensor comprises a smoke detector, a temperature detector and a combustible gas detector; smoke detector, temperature-sensitive detector and combustible gas detector can set up simultaneously in the battery box, also can set up outside the battery box, if set up when outside the battery box, set up at energy storage cabin top.
In this embodiment, the smoke detector and the temperature detector are installed at the top of the energy storage compartment, the smoke detector is used for detecting the smoke concentration in the energy storage compartment, and the temperature detector is used for detecting the temperature in the energy storage compartment; the combustible gas detector and the temperature-sensitive detector are arranged in the battery box, the temperature-sensitive detector is used for detecting the temperature of the battery box, and the combustible gas detector is used for detecting the concentration of the combustible gas in the battery box. That is to say, the temperature-sensing detector sets up the inside of battery box and the top in energy storage cabin simultaneously, detects the inside and outside temperature of battery box simultaneously promptly. In this embodiment, the temperature-sensitive detector is a temperature-sensitive cable, and as another embodiment, the temperature-sensitive detector may also measure the temperature by using an infrared sensor.
The energy storage cabin is internally provided with a fire-fighting host and a temperature-sensitive detector and a smoke-sensitive detector which are arranged at the top, the fire-fighting host is connected with the temperature-sensitive detector and the smoke-sensitive detector outside the battery box and at the top of the energy storage cabin in a sampling manner, the temperature-sensitive detector is used for detecting the temperature in the energy storage cabin, namely the ambient temperature outside the battery box, and the smoke-sensitive detector is used for detecting the smoke concentration in the energy storage cabin, namely the smoke concentration outside the battery box. The fire fighting host machine judges whether fire occurs according to the sampled fire information (temperature information and smoke concentration information in the energy storage cabin), and if the fire occurs, the fire judgment information is sent to the battery system management unit, and meanwhile alarm information is sent out.
Every battery cabinet unit all is equipped with a battery management unit, and temperature-sensing detector and combustible gas detector are connected in the sampling of battery management unit, and temperature-sensing detector and combustible gas detector set up inside the battery box, and temperature-sensing detector is used for detecting the temperature of battery box, and combustible gas detector is used for detecting whether there is combustible gas and combustible gas's concentration in the battery box. The temperature-sensitive detector and the combustible gas detector send the sampled fire information to the battery management unit, the battery management unit forwards the fire information to the battery system management unit, and the battery system management unit judges whether a fire occurs according to the fire information and makes a final judgment result by combining the received fire judgment information of the fire-fighting host.
And the battery system management unit is in communication connection with the battery management unit, and the battery system management unit makes a final control strategy according to a final judgment result and sends a corresponding control instruction to the corresponding battery management unit.
When the battery management unit receives a control command for controlling the spraying device, the battery management unit controls the spraying device to be turned on or off. The spraying device is a high-pressure water mist fire extinguishing device, the high-pressure water mist spray nozzles are installed at the tops of the battery boxes, the control valves in the high-pressure water mist fire extinguishing device are controlled to be opened by the battery management unit according to received control commands, and the high-pressure water mist spray nozzles spray water to the battery boxes to extinguish fire. The existing system adopting the high-pressure water mist fire extinguishing device is an independent system, and the control of the high-pressure water mist fire extinguishing device is realized according to a controller of the system.
The control system further comprises a fan and a fan (not shown in the drawing omitted in the figure 1), the fan comprises a battery box fan and battery fans, the battery box fan is installed in the battery box and used for blowing heat and/or gas in the battery box out of the battery box, the battery rack fan is arranged on the back of the battery box or on two sides of the battery rack so as to further reduce the concentration of the heat and/or the gas of the battery box, the fan is arranged on the battery rack and is a rack fan, heat exchange can be accelerated by starting the fan, or smoke can be quickly discharged out of the energy storage cabin so as to quickly control the battery box to work in a reasonable temperature range, and therefore the reliability of the energy storage cabin is improved. The battery rack fan and the battery box fan are controlled by the battery management unit, and the rack fan on the battery rack is controlled by the battery system management unit. The fan can also be arranged on the side wall of the energy storage cabin.
The control system also comprises a heater (not shown in the figure 1), the heater adopts a patch heater, and the heater is arranged at the battery box and is specifically mounted and attached to the outer side of the battery box; the battery management unit controls the heater to heat according to the received control instruction so as to improve the temperature of the battery box and enable the battery box to work in a reasonable working range.
The control system also comprises an air conditioner (not shown in the figure 1), the air conditioner can heat at low temperature to improve the temperature and refrigerate at high temperature to reduce the temperature, the air conditioner can be controlled by the battery management unit and also can be controlled by the battery system management unit, the air conditioner is generally arranged around the battery box, the specific arrangement position is not limited, and the air conditioner can be reasonably arranged according to the spatial layout.
And the battery system management unit makes a final control strategy according to the final judgment result, when the battery box is at a low temperature, the battery system management unit controls the corresponding heater and/or air conditioner to work through the control valve, starts to heat the battery box, enables the temperature of the battery box at the low temperature to rise rapidly, monitors the temperature of all the battery boxes in real time, and controls the heater and/or the air conditioner to stop working when the temperature of the battery box at the low temperature rises to a reasonable working range.
The control strategy can also control the battery rack fan, the battery box fan and the fan to work first to prevent the temperature from rising continuously, if the temperature is monitored to rise, the air conditioner is started to refrigerate to increase the cooling force and control the temperature to rise; and when the final judgment result shows that fire occurs, the control valve of the high-pressure water mist fire extinguishing device is controlled to be opened, and the battery box is sprayed by the spray head to extinguish fire, so that the safety of the energy storage cabin is ensured by controlling to extinguish the fire.
The battery system management unit also sends the final judgment result of the fire to a micro-network management and control system, and the switch cabinet, the confluence cabinet, the energy storage converter (PCS) and the like are controlled by the management and control system to trip off the corresponding circuit breakers; and a shutdown instruction is sent to the accessed photovoltaic generator, the wind power generator and the diesel generator, and meanwhile, the judgment of the fire condition is based on the signal that the smoke concentration exceeds the threshold value, the information that the combustible gas concentration exceeds the threshold value or/and the signal that the temperature of the energy storage cabin exceeds the threshold value.
The control strategy comprises a temperature control strategy carried out by the energy storage cabin, a linkage control strategy between the battery system management unit and the fire extinguishing device, and a linkage control strategy between the battery system management unit and microgrid control.
The energy storage cabin temperature regulation control strategy is executed in the battery system management unit and comprises a cooling control strategy and a heating control strategy:
(1) the temperature reduction control strategy, as shown in fig. 2, assumes that T1 is the highest temperature in the battery box; t2 is ambient cabin temperature;
when T1 is more than or equal to A or T2 is more than or equal to B, the battery system management unit starts the battery box fan and the battery rack fan to start radiating, and simultaneously starts the air conditioner to refrigerate;
when T1< C, the battery system management unit controls the battery box fan and the battery rack fan to stop working, otherwise, the battery box and the battery rack fan continue to operate;
and when the T2 is less than or equal to C, the battery system management unit controls the air conditioner to finish cooling, otherwise, the air conditioner continuously cools.
A, B, C are set thresholds, A > C, and B > C, respectively.
(2) The temperature rise control strategy and the control flow are shown in fig. 3.
When D is more than or equal to T1 or E is more than or equal to T2, the battery system management unit controls the heater to start heating, and simultaneously starts the air conditioner to start heating;
when T1 is larger than or equal to F, the battery system management unit controls the battery box heater to stop working, otherwise, the battery box heater continuously works;
when T3 is larger than or equal to F, the battery system management unit controls the air conditioner to stop heating, otherwise, the air conditioner continuously heats.
D, E, F sets the threshold values, F > D, and F > E, respectively.
The linkage control strategy between the battery system management unit and the fire extinguishing device is shown in fig. 4:
when the combustible gas detector detects that the concentration of the combustible gas in the battery box reaches a first concentration threshold value, the information is sent to the battery system management unit through the battery management unit, the battery system management unit controls the air conditioner to be turned off and the fan to be started to discharge smoke, meanwhile, the direct current side switch is controlled to be turned off, a battery charging and discharging loop is cut off, and an alarm is sent to the fire-fighting host.
When the combustible gas detector detects that the concentration of the combustible gas in the battery box reaches a second concentration threshold value, the information is sent to the battery system management unit through the battery management unit, the battery system management unit controls the air conditioner to be closed and the fan to be closed, meanwhile, a signal is sent to the fire-fighting host to give an alarm, and the battery system management unit opens the high-pressure water mist sprayer to conduct fire extinguishing operation.
When the detected smoke concentration exceeds a third set concentration threshold or the detected temperature exceeds a set temperature threshold, the battery system management unit also controls the control valve of the high-pressure water mist spray head to be opened for spraying and extinguishing.
Wherein the second concentration threshold is greater than the first concentration threshold.
A coordinated control strategy between the battery system management unit and the microgrid management and control system is specifically as shown in fig. 5:
when the signal that battery system management unit received judges that there is the condition of a fire to take place, send early warning signal to microgrid management and control system, carry out distributed power supply and cut off the operation, trip the circuit breaker of low tension switchgear distributed power supply access simultaneously, reduce the conflagration risk.
The control system comprises:
the control system comprises a fire fighting system, a battery system management unit and a battery management unit, the fire fighting system comprises a fire fighting pipeline and a fire fighting host, the fire fighting host is used for judging whether a fire occurs according to fire information outside the battery box, and the battery system management unit acquires the fire judgment information of the fire fighting host; the battery management unit is connected with a fire information sensor corresponding to the interior of the battery box in a sampling manner and sends the fire information in the battery box to the battery system management unit; the battery system management unit judges whether a fire occurs according to the fire information in the battery box, generates a final judgment result by combining the fire judgment information of the fire-fighting host, and makes a corresponding control strategy according to the final judgment result for control. The specific control has been described in detail in the above embodiments of the energy storage compartment, and the details of this embodiment are not repeated.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, various changes, modifications or equivalents of the embodiments of the present application can be made, and these changes, modifications or equivalents are within the protection scope of the claims of the present invention.
Claims (7)
1. A control system of an energy storage cabin is characterized by comprising
The fire fighting system comprises a fire fighting pipeline and a fire fighting host, wherein the fire fighting pipeline is provided with a spraying device corresponding to each battery box; the fire fighting host is connected with all the fire information sensors outside the battery boxes in a sampling manner and used for judging whether a fire occurs according to the fire information outside the battery boxes;
the battery system management unit is in communication connection with the fire fighting host to acquire fire judgment information of the fire fighting host;
the battery system management unit is in communication connection with the battery management units of the battery boxes;
the battery management unit is connected with the fire information sensor inside the corresponding battery box in a sampling manner and sends the fire information inside the battery box to the battery system management unit; the battery system management unit judges whether a fire occurs according to the fire information in the battery box, generates a final judgment result by combining the fire judgment information of the fire-fighting host, and sends a control instruction to the corresponding battery management unit according to the final judgment result;
the battery management unit controls and is connected with the spraying device corresponding to the position of the battery box, and the battery management unit controls the spraying device to be turned on or turned off according to the control instruction.
2. The control system of the energy storage compartment of claim 1, further comprising a heater disposed at each corresponding battery box, the heater being connected to the battery management unit.
3. The control system of the energy storage compartment of claim 2, wherein the spraying device is a high pressure water mist device.
4. The control system of the energy storage cabin according to claim 3, wherein the battery management unit controls the spray head of the high-pressure water mist device to spray through a control valve.
5. The energy storage compartment control system according to any one of claims 1 to 4, further comprising a fan, wherein the battery system management unit is in control connection with the fan.
6. The control system of the energy storage compartment of claim 5, wherein the fire sensor comprises a smoke detector and a temperature detector.
7. An energy storage compartment comprising a plurality of battery racks, each battery rack having a plurality of battery boxes, and a control system, wherein the control system is the control system for an energy storage compartment according to any one of claims 1 to 6.
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| CN112237707A (en) * | 2020-09-17 | 2021-01-19 | 嘉兴恒创电力设计研究院有限公司 | Multi-stage linkage energy storage fire control method and system |
| CN114392512A (en) * | 2022-01-19 | 2022-04-26 | 阳光新能源开发股份有限公司 | Fire-fighting system, control method thereof and energy storage power station |
| CN114632279A (en) * | 2022-03-23 | 2022-06-17 | 上海置信能源综合服务有限公司 | Fire extinguishing system suitable for centralized lithium cell energy storage power station |
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