Title of invention: ESS stabilization system and its method
Technical field
[One]
The present invention relates to a system and method for preventing the spread of fire and removing unstable elements due to vibration when a fire or vibration occurs in an ESS.
Background
[2]
In general, ESS (Energy Storage System) refers to a storage device that stores excess power produced in a power plant and transmits it when power is temporarily insufficient. Recently, large-scale ESS devices are configured in a small size to prepare for power outages in buildings, factories, and homes. Or, it is increasingly used to reduce peak power.
[3]
In recent years, as interest in new and renewable energy has rapidly increased due to unbalanced power supply and demand, the development of technology to store electricity produced by utilizing renewable energy through ESS and to utilize it at the required time has been continuously made. have.
[4]
In particular, the ESS market continues to grow as the installation of ESS in newly constructed public buildings has become mandatory, and the installation of ESS in private buildings is also increasing in order to save energy.
[5]
In the case of installing ESS in a building, etc., the battery rack of the ESS as shown in the following patent documents should accommodate a battery that stores energy, a BMS that manages the battery, and a PCS that converts power. To be accepted and operated.
[6]
At this time, in the summer when the outside temperature is high, the temperature of the ESS system is excessively increased due to a lot of heat generated from the battery of the ESS system, and the risk of fire is high. Despite the high risk of secondary accidents such as fire and power cutoff as well as damage, technology development has not been actively carried out.
[7]
(Prior technical literature) Korean Laid-Open Patent Publication No. 10-2016-0094216
Detailed description of the invention
Technical challenge
[8]
The present invention provides an ESS stabilization system and method that prevents the spread of fire and eliminates the risk caused by shock or vibration when a fire occurs in the ESS or when more than necessary shock or vibration occurs due to an earthquake or the like.
Means of solving the task
[9]
The fire spread prevention and stabilization method in an ESS consisting of a plurality of battery racks according to an embodiment of the present invention includes an individual battery rack fire detection step of detecting whether a fire exists for each of the plurality of battery racks, and the individual battery rack fire detection. When a fire is detected in the step, it may be configured to include a battery rack forced discharge step of forcibly discharging at least some of the plurality of battery racks.
[10]
The battery rack forced discharge step may include a discharge battery rack setting step of setting a battery rack to be forcibly discharged, and a discharge order setting step of setting a discharge order of the battery rack to be forcibly discharged.
[11]
The discharging battery rack setting step includes a fire-occurring battery rack ID verification step for checking the ID of the battery rack where the fire has occurred, and an adjacent battery rack ID verification step for checking the ID of the battery rack adjacent to the fire-generated battery rack. At least one or more battery racks adjacent to the battery rack where the fire occurred may be set as a discharged battery rack, or all battery racks constituting the ESS may be set as discharged battery racks.
[12]
The discharging order setting step may be set to discharge an order according to the ID or charging capacity of the battery rack set as the discharged battery rack, or set to discharge the battery rack set as the discharged battery rack at the same time.
[13]
In addition, the present invention further includes an ESS vibration sensing step of detecting whether the ESS is impacted or vibrated, and the forced discharging step of the battery rack may force all battery racks of the ESS to be discharged.
[14]
An ESS consisting of a plurality of battery racks according to an embodiment of the present invention includes a forced prevention device for forcibly discharging the ESS power, a main output line forming a current path between the plurality of battery racks and an electronic device, and the plurality of And a forced discharge line forming a current path between the two battery racks and the forced discharge device, and an ESS control unit configured to set which line of each of the plurality of battery racks to be connected to the main output line or the forced discharge line, Each of the plurality of battery racks may include a fire detection unit that detects whether the battery rack is in fire, and a switching unit that connects the battery rack to the main output line or the forced discharge line under the control of the ESS control unit.
[15]
The ESS control unit, upon receiving a fire detection signal from the fire detection unit, a forced discharge battery rack setting module for setting a battery rack to be forcibly discharged among the plurality of battery racks, and a discharge order of the battery racks to be forcibly discharged. It may be configured to include a discharge order setting module.
[16]
The forced discharge battery rack setting module checks the ID of the battery rack where the fire has occurred, detects the ID of the battery rack adjacent to the battery rack where the fire has occurred, and determines at least one battery rack adjacent to the battery rack where the fire has occurred. The discharge battery rack can be set as a discharge battery rack, or all battery racks constituting the ESS can be set as a discharge battery rack.
[17]
The discharging order setting module may set an order of sequentially discharging the battery racks set as the discharged battery racks, or set to discharge the battery racks set as the discharging battery racks at the same time.
[18]
The switching unit includes a main output control switch having one end connected to the main output line, the other end connected to the output terminal of the battery rack, and one end connected to the forced discharge line, and the other end connected to the output terminal of the battery rack. When the battery rack to which the switching unit belongs is set as a forced discharge battery rack, the main output control switch may be turned off, and the forced discharge control switch may be turned on.
[19]
The forced discharge device may be a device set to consume a predetermined power capacity within a predetermined time.
[20]
The fire detection unit may detect the temperature of the battery rack and the presence or absence of smoke.
[21]
In addition, the present invention further includes a vibration sensing unit for sensing the shock or vibration of the ESS, and when a predetermined shock or vibration is detected by the vibration sensing unit, the forced discharge battery rack setting module, constituting the ESS Discharge all battery racks Battery racks can be set up as discharge battery racks.
Effects of the Invention
[22]
In the present invention, when a fire occurs in the ESS, it is possible to prevent the fire from spreading.
[23]
In addition, the present invention prevents the spread of fire to the adjacent battery rack by forcibly discharging the battery rack adjacent to the battery rack where the fire occurred when a fire occurs in at least one battery rack of the ESS, thereby stably stabilizing the ESS Can be used.
[24]
In addition, according to the present invention, when a fire occurs outside the ESS, all battery racks are forcibly discharged, thereby preventing the battery rack from exploding and the fire from spreading.
[25]
In addition, the present invention prevents the spread of fire and eliminates the risk of shock or vibration when a shock or vibration occurs outside the ESS due to an earthquake or the like.
Brief description of the drawing
[26]
1 is a flow chart showing the procedure of a method for preventing the spread of ESS fires according to a first embodiment of the present invention.
[27]
2 is a diagram showing an ESS according to the first embodiment of the present invention.
[28]
3 is a flow chart showing the procedure of a method for preventing the spread of ESS fire according to a second embodiment of the present invention.
[29]
4 is a diagram showing an ESS according to a second embodiment of the present invention.
Best mode for carrying out the invention
[30]
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.
[31]
Terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.
[32]
Throughout the specification, when a part is said to be “connected” to another part, this includes not only the case that it is “directly connected”, but also the case that it is “electrically connected” with another element interposed therebetween. . In addition, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary. As used throughout the specification of the present application, the term "step (to)" or "step of" does not mean "step for".
[33]
Terms used in the present invention have selected general terms that are currently widely used as possible while taking functions of the present invention into consideration, but this may vary according to the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.
[34]
1. Method for preventing fire spread of ESS according to the first embodiment of the present invention.
[35]
The present invention is an invention for preventing the spread of fire in ESS. Specifically, it is intended to prevent the spread of fire by detecting a battery rack in which a fire occurs, and forcibly discharging the battery rack adjacent to the battery rack in which the fire has occurred.
[36]
On the other hand, when the SOC of the battery rack is less than or equal to a predetermined value, the risk of spreading a fire is significantly reduced.
[37]
In other words, if the charging capacity of the battery rack is less than 60%, the battery rack without fire will explode and the fire does not spread due to the fire of the adjacent battery rack, so the charging capacity of the battery rack is kept below a predetermined value. Doing so can prevent the spread of fire.
[38]
On the other hand, if the charging capacity of the battery rack is further lowered to less than the predetermined value, the risk of spreading the fire to the battery rack is further reduced. Since time occurs, it is efficient to discharge only to the appropriate charging capacity. For this reason, in the present invention, a charging capacity of 60% was selected as the optimal discharge charging capacity.
[39]
Meanwhile, the appropriate charging capacity may be a maximum charging capacity in which when a fire occurs in one of the battery racks, an adjacent battery rack does not explode due to the temperature of the battery rack in which the fire occurs.
[40]
For example, the appropriate charging capacity may be 60%. When the charging capacity of the battery rack is 60% or less, even if a fire occurs in an adjacent battery rack, a fire does not spread to the battery rack with a charging capacity of 60% or less. In addition, after the fire has extinguished, the time and cost required to fully charge may be less than the time and cost required to fully charge the battery rack having a charging capacity of 30%.
[41]
Therefore, in the present invention, in the case of forcibly discharging the charging capacity of the battery rack to a predetermined value, it is intended to prevent the spread of fire of the ESS from the principle of reducing the spread of fire.
[42]
1 is a flowchart illustrating a method of preventing fire spread of an ESS according to a first embodiment of the present invention.
[43]
Hereinafter, a method of preventing fire spread of an ESS according to a first embodiment of the present invention will be described with reference to FIG. 1.
[44]
The fire spread prevention method according to the first embodiment of the present invention may be performed in an ESS configured with a plurality of battery racks. Specifically, the individual battery rack fire detection step (S100) of detecting whether a fire exists for each of the plurality of battery racks, and when a fire is detected in the individual battery rack fire detection step, at least some of the plurality of battery racks are forced It may be configured to include a battery rack forced discharge step (S200) to discharge.
[45]
Meanwhile, in the individual battery rack fire detection step (S100), a fire detection signal is detected in the battery rack using a conventional fire detector, and when a fire is detected, the fire detector may transmit a fire detection signal to the control unit of the ESS. .
[46]
On the other hand, the battery rack forced discharge step (S200) includes a discharge battery rack setting step (S210) of setting a battery rack to be forcibly discharged, and a discharge order setting step (S220) of setting a discharge order of the battery rack to be forcibly discharged. Can be configured.
[47]
On the other hand, the discharge battery rack setting step (S210), a fire occurrence battery rack ID verification step (S211) of confirming the ID of the battery rack where the fire has occurred, and the adjacent battery rack ID verification step of the adjacent battery rack where the fire has occurred. It may be configured to include a battery rack ID verification step (S212). Meanwhile, the step of confirming the adjacent battery rack ID may be performed by the controller of the ESS, and the controller of the ESS may store IDs and location information for a plurality of battery racks constituting the ESS.
[48]
Meanwhile, in the setting of the discharged battery rack (S210), at least one or more battery racks adjacent to the battery rack in which the fire has occurred may be set as a discharged battery rack, or all battery racks constituting the ESS may be set as a discharged battery rack.
[49]
For example, if the number of battery racks in which fire has occurred is 1 by further performing the step (S212) to confirm the number of battery racks in which fire has occurred to check whether there is one When only the battery racks adjacent to the rack are forcibly discharged, and the number of battery racks in which a fire occurs is more than two, all battery racks can be set as forced discharge battery racks (S230) and forced discharge.
[50]
Specifically, when it is determined that a fire has occurred only in the third battery rack in the ESS consisting of 10 battery racks (the first to the tenth battery racks), the ESS control unit, the battery rack adjacent to the third battery rack is the second battery rack. And the fourth battery rack may be detected, and the second battery rack and the fourth battery rack may be set as the forced discharge battery rack.
[51]
On the other hand, as another example, when it is determined that a fire has occurred in the third battery rack, the sixth battery rack, and the sixth battery rack in an ESS consisting of 10 battery racks (first to tenth battery racks), All battery racks may be set as forced discharge battery racks and all battery racks may be discharged (S230).
[52]
As another example, when a fire detection signal is transmitted from an external fire detector to the ESS, all battery racks constituting the ESS may be set as forced discharge battery racks and forced discharge (S230).
[53]
That is, the battery rack to be forcibly discharged can be set according to the number of racks in which a fire has occurred among the battery racks constituting the ESS or a fire detection signal from outside the ESS.
[54]
On the other hand, the discharging order setting step may be set to discharge the order according to the ID or charging capacity of the battery rack set as the discharged battery rack, or set to discharge the battery rack set as the discharged battery rack at the same time.
[55]
For example, in the order of discharging the battery rack, the discharging may be performed sequentially in an order in which the ID of the battery rack is early or in an order in which the charging capacity (SOC) is high.
[56]
Specifically, when it is determined that a fire has occurred only in the third battery rack in the ESS consisting of 10 battery racks (first to tenth battery racks), ID among the second and fourth battery racks adjacent to the third battery rack It can be set to discharge the fast second battery rack first, and then forcibly discharge the fourth battery rack.
[57]
As another example, when it is determined that a fire has occurred only in the third battery rack in an ESS consisting of 10 battery racks (first to tenth battery racks), a second battery rack having a charge capacity of 80% adjacent to the third battery rack Among the fourth battery racks having an overcharge capacity of 90%, the fourth battery rack having a large charging capacity may be first discharged, and then the second battery rack may be forcibly discharged.
[58]
On the other hand, as another example, when it is determined that a fire has occurred in the third, sixth, and sixth battery racks in an ESS consisting of 10 battery racks (first to tenth battery racks), the ESS is configured. It can be set to discharge all battery racks at the same time.
[59]
As another example, even when a fire detection signal is transmitted from an external fire detector to the ESS, it can be set to force all battery racks constituting the ESS to be discharged simultaneously.
[60]
That is, the order of forced discharge can be set according to the number of racks in which a fire has occurred among the battery racks constituting the ESS or a fire detection signal from outside the ESS.
[61]
On the other hand, Figure 3 is a flow chart showing the sequence of the ESS fire spread prevention method according to the second embodiment of the present invention. The method for preventing fire spread of the ESS according to the second embodiment of the present invention may further include a vibration sensing step S101 of sensing vibration of the ESS as shown in FIG. 3.
[62]
As a result of performing the vibration sensing step of sensing vibration of the ESS as described above, when a predetermined vibration is detected, all the battery racks may be forcibly discharged by performing the aforementioned forcibly discharging all battery racks.
[63]
On the other hand, when no vibration is detected in the vibration sensing step, the forcibly discharging the battery rack according to the first embodiment of the present invention (S200) may be performed.
[64]
[65]
2. ESS according to the first embodiment of the present invention
[66]
2 is a diagram showing an ESS according to the first embodiment of the present invention.
[67]
Hereinafter, an ESS according to an embodiment of the present invention will be described with reference to FIG. 2.
[68]
ESS (1) according to an embodiment of the present invention is composed of a plurality of battery racks (100 to 109), a forced discharge device (20) for forcibly discharging the power of the ESS, the plurality of A main output line (11) forming a current path between the electronic device (109) and the electronic device (10), a forced discharge line (12) forming a current path between the plurality of battery racks and the forced discharge device (20), the The plurality of battery racks may be configured to include an ESS control unit 200 configured to set which line of the main output line 11 or the forced discharge line 12 is connected to each of the plurality of battery racks.
[69]
On the other hand, each of the plurality of battery racks is a fire detection unit 400 for detecting whether the battery rack is fired, and a switching unit for connecting the battery rack to the main output line or the forced discharge line under the control of the ESS control unit 200 It can be configured to include (300).
[70]
Meanwhile, the fire detection unit 400 may be provided in each of the battery racks and in a part of the ESS, and the fire detection unit provided in each of the battery racks detects whether a fire occurs in the battery rack and is provided in a part of the ESS. The fire detection unit can detect whether or not there is a fire outside the ESS.
[71]
On the other hand, the ESS control unit 200, upon receiving a fire detection signal from the fire detection unit 400, the forced discharge battery rack setting module 210 and the It may be configured to include a discharge order setting module 220 for setting the discharge order of the battery rack to be forcibly discharged.
[72]
Meanwhile, the ESS control unit 200 may further include a storage unit 230 in which ID and location information for a plurality of battery racks constituting the ESS are stored.
[73]
For example, the forced discharge battery rack setting module checks the ID of the battery rack where the fire occurred, and detects the ID of the battery rack adjacent to the battery rack where the fire occurred in the storage unit, and At least one adjacent battery rack may be set as a discharge battery rack.
[74]
Alternatively, all battery racks constituting the ESS can be set as discharged battery racks without detecting adjacent battery racks.
[75]
For example, when it is determined that a fire has occurred only in a third battery rack in an ESS consisting of 10 battery racks (first to tenth battery racks), the forced discharge battery rack setting module uses the storage unit to provide a second By detecting that the battery rack and the fourth battery rack are adjacent to the third battery rack in which the fire occurred, the second and fourth battery racks adjacent to the third battery rack may be set as forced discharge battery racks.
[76]
On the other hand, as another example, when it is determined that a fire has occurred in the third battery rack, the sixth battery rack, and the sixth battery rack in an ESS consisting of 10 battery racks (first to tenth battery racks), All battery racks can be set up as forced discharge battery racks.
[77]
As another example, when a fire detection signal is transmitted from an external fire detector to the ESS, all battery racks constituting the ESS may be set as forced discharge battery racks.
[78]
That is, the battery rack to be forcibly discharged can be set according to the number of racks in which a fire has occurred among the battery racks constituting the ESS or a fire detection signal from outside the ESS.
[79]
Meanwhile, the discharging order setting module may set an order to discharge according to the ID or charging capacity of the battery rack set as the discharged battery rack, or set to discharge the battery rack set as the discharged battery rack at the same time.
[80]
For example, in the order of discharging the battery rack, the discharging may be performed sequentially in an order in which the ID of the battery rack is early or in an order in which the charging capacity (SOC) is high.
[81]
Specifically, when it is determined that a fire has occurred only in the third battery rack in the ESS consisting of 10 battery racks (first to tenth battery racks), ID among the second and fourth battery racks adjacent to the third battery rack It can be set to discharge the fast second battery rack first, and then forcibly discharge the fourth battery rack.
[82]
As another example, when it is determined that a fire has occurred only in the third battery rack in an ESS consisting of 10 battery racks (first to tenth battery racks), a second battery rack having a charge capacity of 80% adjacent to the third battery rack Among the fourth battery racks having an overcharge capacity of 90%, the fourth battery rack having a large charging capacity may be first discharged, and then the second battery rack may be forcibly discharged.
[83]
On the other hand, as another example, when it is determined that a fire has occurred in the third, sixth, and sixth battery racks in an ESS consisting of 10 battery racks (first to tenth battery racks), the ESS is configured. It can be set to discharge all battery racks at the same time.
[84]
As another example, even when a fire detection signal is transmitted from an external fire detector to the ESS, it can be set to force all battery racks constituting the ESS to be discharged simultaneously.
[85]
That is, the order of forced discharge can be set according to the number of racks in which a fire has occurred among the battery racks constituting the ESS or a fire detection signal from outside the ESS.
[86]
Meanwhile, the switching unit 300 has one end connected to the main output line 11, the other end connected to the output terminal of the battery rack 310 and one end connected to the forced discharge line 12. It is connected, the other end may be configured to include a forced discharge control switch 320 connected to the output terminal of the battery rack.
[87]
Meanwhile, when the battery rack to which the switching unit 300 belongs is set as a forced discharge battery rack, the main output control switch 310 may be turned off, and the forced discharge control switch 320 may be turned on.
[88]
Meanwhile, the forced discharge device 20 may be a device set to consume a predetermined power capacity within a predetermined time.
[89]
For example, the forced discharge device may be a device that converts electrical energy stored in the ESS into thermal energy.
[90]
Meanwhile, the fire detection unit 400 may detect whether the battery rack is fired by detecting the temperature of the battery rack and the presence of smoke.
[91]
Meanwhile, FIG. 4 is a diagram showing an ESS according to a second embodiment of the present invention.
[92]
The ESS according to the second embodiment of the present invention may further include a vibration detection unit 500.
[93]
Specifically, the vibration detection unit 500 may detect whether an earthquake or an ESS is impacted and, when a predetermined impact or vibration is sensed, force all battery racks to be discharged.
[94]
On the other hand, when vibration is not detected, it is possible to forcibly discharge the entire battery rack constituting the ESS or the rack adjacent to the battery rack where the fire is detected by detecting whether a fire has occurred.
[95]
On the other hand, although the technical idea of ​​the present invention has been described in detail according to the above embodiment, it should be noted that the above embodiment is for the purpose of explanation and not for the limitation thereof. In addition, those skilled in the art in the technical field of the present invention will be able to understand that various embodiments are possible within the scope of the technical idea of ​​the present invention.
[96]
Claims
[Claim 1]
In the ESS consisting of a plurality of battery racks, the ESS, Forced prevention device for forcibly discharging the ESS power; A main output line forming a current path between the plurality of battery racks and the electronic device; A forced discharge line forming a current path between the plurality of battery racks and the forced discharge device; An ESS control unit configured to set which line of each of the plurality of battery racks to be connected to the main output line or the forced discharge line; It is configured to include, each of the plurality of battery racks, fire detection unit for detecting whether the battery rack is fire; And a switching unit connecting the battery rack to the main output line or the forced discharge line under the control of the ESS control unit. ESS, characterized in that configured to include.
[Claim 2]
The method of claim 1, wherein the ESS control unit comprises: a forced discharge battery rack setting module configured to set a battery rack to be forcibly discharged from among the plurality of battery racks when a fire detection signal is received from the fire detection unit; A discharge order setting module for setting a discharge order of the battery racks to be forcibly discharged; ESS, characterized in that configured to include.
[Claim 3]
The method of claim 2, wherein the forced discharge battery rack setting module checks the ID of the battery rack where the fire has occurred, detects the ID of the battery rack adjacent to the battery rack where the fire has occurred, and at least Setting one or more battery racks to discharge battery racks; Or, ESS, characterized in that setting all the battery racks constituting the ESS as a discharge battery rack as a discharge battery rack.
[Claim 4]
The method according to claim 2, wherein the discharging order setting module is configured to set an order of sequentially discharging the battery racks set as the discharged battery rack, or set to discharge the battery racks set as the discharged battery racks simultaneously ESS.
[Claim 5]
The method according to claim 2, wherein the switching unit, one end is connected to the main output line, the other end is a main output control switch connected to the output terminal of the battery rack; And a forced discharge control switch having one end connected to the forced discharge line and the other end connected to an output terminal of the battery rack. And, when the battery rack to which the switching unit belongs is set as a forced discharge battery rack, the main output control switch is turned off, and the forced discharge control switch is turned on.
[Claim 6]
The ESS according to claim 1, wherein the forced discharge device is a device set to consume a predetermined power capacity within a predetermined time.
[Claim 7]
The ESS according to claim 1, wherein the fire detection unit detects a temperature of the battery rack and the presence or absence of smoke.
[Claim 8]
The method according to claim 2, further comprising a vibration detection unit for detecting the shock or vibration of the ESS, and when a predetermined shock or vibration is detected by the vibration detection unit, the forced discharge battery rack setting module comprises: ESS, characterized in that all battery racks are discharged and the battery racks are set as discharged battery racks.
[Claim 9]
A method for stabilizing an ESS comprising a plurality of battery racks, the method comprising: detecting a fire in each of the plurality of battery racks; A battery rack forced discharge step of forcibly discharging at least some of the plurality of battery racks when a fire is detected in the individual battery rack fire detection step; ESS stabilization method comprising a.
[Claim 10]
The method of claim 9, wherein the forced discharging of the battery rack comprises: setting a battery rack to be forcibly discharged; And a discharge order setting step of setting a discharge order of the battery racks to be forcibly discharged. ESS stabilization method comprising a.
[Claim 11]
The method of claim 10, wherein the setting of the discharged battery rack comprises: checking an ID of a battery rack in which a fire has occurred; And an adjacent battery rack ID checking step of confirming the ID of the battery rack adjacent to the battery rack where the fire occurred. To set at least one battery rack adjacent to the battery rack where the fire occurred as a discharge battery rack; Or, ESS stabilization method, characterized in that all the battery racks constituting the ESS are set as discharged battery racks.
[Claim 12]
The method of claim 11, wherein the setting of the discharging order comprises setting a discharging order according to an ID or charging capacity of a battery rack set as the discharged battery rack, or simultaneously discharging the battery racks set as the discharged battery rack. ESS stabilization method, characterized in that.
[Claim 13]
The ESS stabilization method of claim 9, further comprising an ESS vibration sensing step of detecting whether the ESS is impacted or vibrated, wherein the forced discharging of the battery racks comprises forcibly discharging all the battery racks of the ESS.