TWM635967U - Energy storage device detection system - Google Patents

Abstract

An energy storage device detection system includes a first energy storage device, a second energy storage device and a controller. The first energy storage device is coupled to a first low-voltage side device. The second energy storage device is coupled to a second low-voltage side device. The second low-voltage side device is coupled to the first low-voltage side device. The controller is communicatively connected to the first energy storage device and the second energy storage device. The controller is configured to receive a first operation data from the first energy storage device and receive a second operation data from the second energy storage device. The controller is further configured to selectively perform a charge test or a discharge test on the first energy storage device or the second energy storage device.

Description

Energy storage equipment detection system

The present disclosure relates to a system for transmitting and storing electric energy, especially a technology capable of detecting whether the operation of multiple energy storage devices is normal.

When the power generation system distributes power, in order to avoid transmission loss, it adopts the form of high-voltage direct current and transmits power through the grid. In order to support grid dispatching and regulation, the fastest regulation technology is the energy storage system. . Before there was an energy storage system, the power grid generated power through hydropower and thermal power units, and was regulated by methods such as demand response depending on the actual situation of the power grid. After the energy storage system is introduced, the energy storage system stores the received electric energy or sends electric energy to support the power grid, so as to achieve the benefits of fast and stable power grid, and to meet the actual power demand and specifications of users. Therefore, the performance and operation stability of energy storage devices are very important.

An aspect of the disclosure is an energy storage device detection system, including a first energy storage device, a second energy storage device, and a controller. The first energy storage device is coupled to the first low-voltage side device. The second energy storage device is coupled to the second low-voltage side device. The second low-side device is coupled to the first low-side device. The controller is communicatively connected to the first energy storage device and the second energy storage device, wherein the controller is used for receiving first operation data from the first energy storage device and receiving second operation data from the second energy storage device. The controller is also used to selectively perform a charging test or a discharging test on the first energy storage device or the second energy storage device.

Another aspect of the present disclosure is an energy storage device detection system, including a first energy storage device, a second energy storage device, and a controller. The first energy storage device is coupled to the first low-voltage side device. The second energy storage device is coupled to the first low-voltage side device through the second low-voltage side device and the high-voltage side device. The controller is communicatively connected to the first energy storage device, the second energy storage device and the high-voltage side device. The controller is used to detect whether the operating data of the first energy storage device, the second energy storage device and the high-voltage side device meet the detection standard when performing a charge and discharge test between the first energy storage device and the second energy storage device.

In this disclosure, multiple energy storage devices are charged and discharged on the spot to simulate the actual power supply environment of the power grid. Based on this, it will be possible to accurately detect whether the energy storage device can operate normally in the field environment.

A plurality of implementations of the present disclosure will be disclosed in the following diagrams. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. That is, in some implementations, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some well-known structures and components will be shown in a simple and schematic manner in the drawings.

Herein, when an element is referred to as "connected" or "coupled", it may mean "electrically connected" or "electrically coupled". "Connected" or "coupled" may also be used to indicate that two or more elements cooperate or interact with each other. In addition, although terms such as “first”, “second”, . Unless clearly indicated by the context, the terms do not specifically refer to or imply a sequence or sequence, nor are they intended to limit the disclosure.

FIG. 1 is a schematic diagram of an energy storage device detection system 100 according to some embodiments of the present disclosure. In an embodiment, the energy storage device inspection system 100 can be used to inspect the entire energy storage system. The energy storage system includes energy storage equipment, power high-voltage and power low-voltage equipment, and an energy management platform that can be integrated into the energy storage monitoring system through communication. The energy storage system can have the technology of active regulation and rapid regulation, which has the benefit of stabilizing the regulation of real power and virtual power of the power grid and the frequency and voltage of the power grid. Both the energy storage system and the energy storage device detection system 100 can be a part of the power distribution system EDS, which will be described in detail in subsequent paragraphs.

As shown in FIG. 1 , the energy storage device detection system 100 includes a first energy storage device 110 , a second energy storage device 120 and a controller 130 . The controller 130 can control the energy storage devices 110 and 120 respectively, and judge whether the operation is normal through the charging and discharging relationship between the energy storage devices 110 and 120 (hereinafter referred to as "testing procedure"). In some embodiments, the controller 130 can be set in the monitoring device MD, and the monitoring device MD has a screen to display the detected data, or the monitoring device MD can be connected to the Internet, so that the energy storage device testing system 100 The administrator of the MD can remotely connect to the monitoring device MD through other terminal devices for remote detection.

After the detection procedure is completed, the energy storage devices 110 and 120 can be directly applied to the energy storage field to be used to receive the energy provided by the grid EG, and provide electric energy to each electronic device in the energy storage field according to the electricity demand. equipment. For the convenience of the following description, "the grid EG, the first low-voltage side equipment LV1, the transformers C1/C2, the second low-voltage side equipment LV2, and the high-voltage side equipment HV" are collectively referred to as the power distribution system EDS. The functions of each device will be described one by one in the subsequent paragraphs.

In one embodiment, the energy storage devices 110 and 120 may respectively include lithium battery devices, energy storage converter devices, battery management devices, energy management devices, etc., and the aforementioned devices may be installed in a In the cabinet, but the implementation of the energy storage device is not limited to this.

The first energy storage device 110 is coupled to the first low voltage side device LV1. The first low voltage side device LV1 is coupled to the grid EG through the transformer C1 to receive the electric energy converted by the transformer C1. The first low-voltage side device LV1 is also coupled to a plurality of electronic devices that need power supply in the office through a plurality of power distribution lines. In actual operation, the first low voltage side device LV1 can selectively provide the electric energy provided by the transformer C1 or the first energy storage device 110 to each electronic device in the office. In some embodiments, the first low-voltage side equipment LV1 can be implemented by a distribution box, a switchboard or a switchgear, and is equipped with a current protection device, a surge protection device and/or a fuse switch.

Similarly, the second energy storage device 120 is coupled to the second low voltage side device LV2. The second low-voltage side device LV2 is coupled to the grid EG through the transformer C2 to receive the electric energy converted by the transformer C2. The second low-voltage side device LV2 is also coupled to a plurality of electronic devices that need power supply in the office through a plurality of power distribution lines. In actual operation, the second low-voltage side device LV2 can selectively provide the electric energy provided by the transformer C2 or the second energy storage device 120 to each electronic device in the office. In some embodiments, the second low-voltage side equipment LV2 can be implemented by a distribution box, a switchboard or a switchgear, and is provided with a current protection device, a surge protection device and/or a fuse switch.

The controller 130 is communicatively connected to the first energy storage device 110 and the second energy storage device 120 , and is used for receiving first operation data from the first energy storage device 110 and receiving second operation data from the second energy storage device 120 . The first operating data/second operating data may include voltage, current, frequency and/or power of the first energy storage device 110/second energy storage device 120 during operation. The controller 130 is used to selectively perform a charge and discharge test (ie, a charge test or a discharge test) on the first energy storage device 110 or the second energy storage device 120 to confirm whether the operation is normal.

Specifically, the controller 130 can control the first energy storage device 110 to operate in the discharge mode to perform a discharge test, and make the second energy storage device 120 to operate in the charge mode to conduct a test according to the power discharged by the first energy storage device 110. Charging test. Correspondingly, the controller 130 can also control the second energy storage device 120 to operate in the discharge mode to perform a discharge test, and make the first energy storage device 110 to operate in the charge mode to conduct the test according to the electric power discharged by the second energy storage device 120 Charging test.

When the first energy storage device 110 /the second energy storage device 120 is performing a charging and discharging test, the controller 130 is used to detect the first operating data and the second operating data, and determine whether the operating data meets the detection standard. For example: comparing the first operating data (such as output parameters such as output current) of the first energy storage device 110 in discharge with the ideal data of the grid, if the first operating data conforms to the ideal data of the grid, it represents the first energy storage device 110 circuit works normally.

Correspondingly, the controller can also compare the second operating data of the charging second energy storage device 120 (such as energy storage parameters such as battery voltage) with the ideal energy storage data. If the second operating data conforms to the ideal energy storage data, it means that the circuit of the second energy storage device 120 is operating normally. The aforementioned ideal grid data and energy storage ideal data can be fixed values (such as: voltage value, power value), or can also be a range (such as: voltage range).

Since the first energy storage device 110 and the second energy storage device 120 transmit electric energy through the first low-voltage side device LV1, the transformers C1, C2 and the second low-voltage side device LV2, if the first operating data and the second operating data The operation is normal, and the operation on behalf of the first low-voltage side equipment LV1, the transformers C1, C2 and the second low-voltage side equipment LV2 is also normal.

It should be particularly mentioned here that the energy storage device detection system 100 does not need to be coupled to the grid EG when performing the detection procedure. In other words, the first energy storage device 110 performing a discharge test will simulate a grid, and the second energy storage device 120 performing a charge test will simulate a state of receiving the grid and storing energy. The content of this disclosure is to conduct a complete testing procedure directly at the case site, so as to test the power supply capacity of the site. The first energy storage device 110 and the second energy storage device 120 are coupled to the "low-voltage side device that is used in conjunction with actual operation", so the detection result will be in line with the situation where the power distribution system EDS is actually powered by the grid EG to ensure detection reliability of the results.

In the aforementioned embodiments, the energy storage device detection system 100 is applied to the power supply network of the low-voltage side LS, that is, the electric energy is transmitted through a low voltage (for example: about 480V), but this disclosure is not limited thereto, and can also be Applied to the power supply network on the high-voltage side, the voltage is converted to a high voltage (eg: about 22.8kV). As shown in FIG. 1 , in some embodiments, the first low-voltage side device LV1 and the second low-voltage side device LV2 are connected through the high-voltage side device HV. In other words, a power transmission connection is established between the first energy storage device 110 and the second energy storage device 120 through the first low voltage device LV1 , the transformer C1 , the high voltage device HV, the transformer C2 and the second low voltage device LV2 . The high-voltage side equipment HV can be realized by a high-voltage distribution box, a high-voltage switchboard or a switchgear, and is equipped with a current protection device, a surge protection device and/or a digital protection relay. The high-voltage side device HV can be connected to the grid EG to receive electric energy and selectively distribute it to the first energy storage device 110 and the second energy storage device 120, but when performing the detection procedure, the high-voltage side device HV will not be connected to the grid EG connect.

As mentioned above, the high-voltage side equipment HV, the first low-voltage side equipment LV1 and the second low-voltage side equipment LV2 are all power supply and distribution equipment actually used in the field. In other words, the energy storage device detection system of the present disclosure connects the energy storage devices 110, 120 and the controller 130 to actual voltage devices, rather than to a simulated detection machine. Therefore, the detection result of the controller 130 can correctly reflect the actual environment of the power distribution system EDS, so as to detect various situations that may be encountered during power distribution of the power distribution system EDS, such as tripping of high-voltage circuit breakers and voltage oscillations.

In this embodiment, the disclosure realizes the connection on the high-voltage side through the energy storage devices 110, 120 and the low-voltage side devices LV1, LV2 and high-voltage side devices HV in the electric energy connection line, so that the power can be connected between the two sets of energy storage devices. Transfer between 110 and 120 to form a "drag" structure for charging and discharging. The "towing" technology enables the energy storage devices 110 and 120 to imitate the demand of the grid, and simulate the adjustment rate of electric energy and the function of energy dispatching in advance.

In some embodiments, the controller 130 can also be communicatively connected to the high voltage side device HV, the first low voltage side device LV1 and the second low voltage side device LV2 respectively. When the charge and discharge test is being performed between the first energy storage device 110 and the second energy storage device 120, the controller 130 receives high-voltage operation data from the high-voltage side device HV, receives first low-voltage operation data from the first low-voltage side device LV1, and receiving second low-voltage operation data from the second low-voltage side device LV2. The controller 130 is used to determine whether the internal operation of the high-voltage side device HV, the first low-voltage side device LV1, and the second low-voltage side device LV2 is normal according to the high-voltage operation data, the first low-voltage operation data, and the second low-voltage operation data (that is, Whether the operating data meets the testing standards).

Specifically, the controller 130 can detect the magnitude of the common-mode noise of the high-voltage side equipment HV according to the high-voltage operation data. Common mode noise will interfere with the communication between the energy storage equipment 110, 120 and the high and low voltage side equipment. If the common mode noise is greater than the threshold value, it means that there is a problem with the internal components or configuration methods (such as: grounding mode) of the high voltage side equipment HV , needs to be tuned and corrected. In addition, the controller 130 can also send a detection command to the relay of the high-voltage side device HV to detect whether the relay is operating normally. The aforementioned detection command can be an analog signal used to drive the relay to perform its protection function.

In addition, the first energy storage device 110 , the second energy storage device 120 , the first low-voltage side device LV1 , the second low-voltage side device LV2 , and the high-voltage side device HV are all equipped with safety mechanisms. During the detection procedure, when the controller 130 When the communication connection with other devices (the first energy storage device 110, the second energy storage device 120, the first low-voltage side device LV1, the second low-voltage side device LV2, and the high-voltage side device HV) is disconnected, these devices will Automatically stop operation to avoid damage to components due to mismatch of actions between devices.

In some embodiments, after the controller 130 obtains the first operating data, the second operating data, and the high-voltage operating data, the controller 130 can calculate the first stored value according to the first operating data, the second operating data, and the high-voltage operating data. The power phase sequence consistency between the energy device 110, the second energy storage device 120 and the high-voltage side device HV. Electric power is divided into positive phase sequence and negative phase sequence. In the process of power distribution, the overall power phase sequence must be consistent. Wrong phase sequence will cause fault current in the power distribution system EDS, resulting in equipment shutdown or even damage.

Specifically, the controller 130 can respectively obtain the three-phase vector signals (such as three-phase voltage signals or three-phase current signals) in the first energy storage device 110, the second energy storage device 120, and the high-voltage side device HV to determine The electric phase sequence of the first energy storage device 110 , the second energy storage device 120 and the high voltage side device HV belongs to the positive phase sequence or the negative phase sequence. Next, the controller 130 judges whether the phase sequences among the first energy storage device 110 , the second energy storage device 120 and the high voltage side device HV are consistent. Similarly, the controller 130 can also receive the operation data of the first low-voltage side device LV1 , the second low-voltage side device LV2 , and the high-voltage side device HV to confirm the consistency of the electric phase sequence.

The content of this disclosure is to carry out a complete detection process directly on the case site. Through the energy storage power feedback technology, the energy storage power passes through the energy storage system, low-voltage power system and high-voltage power system to and fro, so as to detect the high-voltage power, Low-voltage power, energy storage bidirectional inverters and battery modules for complete energy storage power system testing. This is an advanced technology for the energy storage system to be tested directly on the field.

FIG. 2 is a detailed schematic diagram of an energy storage device detection system 100 according to some embodiments of the present disclosure. In Fig. 2, similar elements related to the embodiment of Fig. 1 are indicated by the same reference numerals for easy understanding, and the specific principles of the similar elements have been explained in detail in previous paragraphs, unless they are related to the elements of Fig. 2 Those who have a cooperative operation relationship and are necessary to introduce them will not be repeated here.

As shown in FIG. 2 , the first low-voltage side device LV1 has a current comparator LV11 , a voltage comparator LV12 , a grounding circuit LV13 , a low-voltage circuit breaker LV14 and an ammeter LV15 . The current comparator LV11 is used to detect and adjust the received large current, and the voltage comparator LV12 is used to detect and adjust the received large voltage. When an abnormal voltage or current occurs, the current comparator LV11 and the voltage comparator LV12 activate the circuit breaking mechanism through the low voltage circuit breaker LV14. The ammeter LV15 is coupled to the current comparator LV11 and the voltage comparator LV12 to detect the current power state of the first low voltage side device LV1 or the power data provided to the first energy storage device 110 . The controller 130 is coupled to the electric meter LV15 to obtain the first operating data.

In some embodiments, the structure of the second low-voltage side equipment LV2 is the same as that of the first low-voltage side equipment LV1, and may have similar current comparators LV21, voltage comparators LV22, grounding circuits LV23, low-voltage circuit breakers LV24 and electric meters LV25, Therefore, the function of the components will not be repeated here.

The high-voltage side equipment HV includes a current comparator H1, a voltage comparator H2, an ammeter H3, a digital protection relay H4, a high-voltage circuit breaker H5, a grounding circuit H6, and a lightning protection circuit H7. The current comparator H1 and the voltage comparator H2 are used to detect and adjust the current and voltage provided by the power supply terminal (such as: the grid EG, or the energy storage device in charging mode). The electric meter H3 is used to record the power state, and if there is an abnormality, the protection mechanism will be activated through the digital protection relay H4 and/or the high voltage circuit breaker H5. The lightning protection circuit H7 has a ground terminal, which is used to prevent damage to the high-voltage side equipment HV caused by weather factors such as thunderstorms. Since those skilled in the art can understand the composition and operation of the high-voltage side device HV, no further details are given here.

Specifically, in this embodiment, through the communication connection between the controller 130 and the electric meter H3 and the digital protection relay H4, the energy storage device detection system 100 can confirm whether the excitation current of the passing transformers C1 and C2 is reasonable, so as to Prevent high voltage circuit breaker H5 from tripping due to abnormal current. In addition, the energy storage device detection system 100 can also monitor whether the digital protection relay H4 has a malfunction, and detect whether the insulation of the high-voltage cable is good or not.

In some embodiments, when the first energy storage device 110 and the second energy storage device 120 perform the charge and discharge test, the controller 130 will judge the first energy storage device in different analysis modes according to the first operation data and the second operation data. Whether the energy device 110 and the second energy storage device 120 are in a normal state. The analysis modes may include "real power and reactive power mode (hereinafter referred to as PQ mode)", "frequency and real power mode (hereinafter referred to as FP mode)" and "voltage and reactive power mode (hereinafter referred to as VQ mode)".

Taking the PQ mode as an example, the controller 130 can determine whether the real power and the imaginary power of the first energy storage device 110 and/or the second energy storage device 120 meet the detection standard according to the voltage and current parameters. If the relative relationship between the real power and the imaginary power is inconsistent with the power distribution situation of the power grid to be simulated, it means that there is a problem in the first energy storage device 110 and/or the second energy storage device 120 or the high-voltage and low-voltage side devices.

Taking the FP mode as an example, the controller 130 can receive the operating frequency (ie, charging or discharging power frequency) and operating power of the first energy storage device 110 and/or the second energy storage device 120 , and determine whether it meets the detection standard. In some embodiments, the controller 130 can send an adjustment command to the first energy storage device 110 and/or the second energy storage device 120 to adjust its operating power, and determine whether the first energy storage device 110 and/or the second energy storage device When the frequency of the energy storage device 120 is adjusted, whether the change of the real power or the reactive power meets the expected standard.

Similarly, taking the VQ mode as an example, the controller 130 can determine whether the voltage and reactive power of the first energy storage device 110 and/or the second energy storage device 120 meet the detection standard according to the voltage and current parameters. If the relative relationship between the voltage and the reactive power is not consistent with the grid power distribution situation to be simulated, it means that there is a problem in the first energy storage device 110 and/or the second energy storage device 120 or the high and low voltage side devices.

In the aforementioned embodiments, the energy storage device detection system 100 includes the first energy storage device 110, the second energy storage device 120 and the controller 130, and the rest of the devices are used by the first energy storage device 110 and the second energy storage device 120 Yuzhi's existing configuration of the case. However, in other embodiments, the energy storage device detection system 100 can also cover the first low-voltage side device LV1 and the second low-voltage side device LV2 (for example: the first energy storage device 110 and the first low-voltage side device LV1 can be installed on the same cabinet), or it can also contain high voltage side equipment HV.

Various components, method steps or technical features in the above-mentioned embodiments can be combined with each other, and are not limited by the order of description in words or presentation in drawings in the present disclosure.

Although the content of this disclosure has been disclosed above in terms of implementation, it is not intended to limit the content of this disclosure. Anyone who is skilled in this art can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, this disclosure The scope of protection of the content shall be defined by the scope of the attached patent application.

100: Energy storage equipment detection system

110: The first energy storage device

120: The second energy storage device

130: Controller

EDS: Electrical Distribution System

EG: Grid

MD: Monitoring device

LS: low voltage side

LV1: The first low-voltage side equipment

LV11: current ratio

LV12: Voltage comparator

LV13: Ground circuit

LV14: Low voltage circuit breaker

LV15: Meter

LV2: Second low voltage side device

LV21: current ratio

LV22: Voltage comparator

LV23: Ground circuit

LV24: Low voltage circuit breaker

LV25: Meter

HV: high voltage side equipment

C1: Transformer

C2: Transformer

H1: Current ratio

H2: Pressure comparator

H3: Meter

H4: Digital protection relay

H5: High voltage circuit breaker

H6: Grounding circuit

H7: lightning protection circuit

FIG. 1 is a schematic diagram of an energy storage device detection system according to some embodiments of the present disclosure. FIG. 2 is a schematic diagram of an energy storage device detection system according to some embodiments of the present disclosure.

100: Energy storage equipment detection system

110: The first energy storage device

120: The second energy storage device

130: Controller

MD: Monitoring device

EDS: Electrical Distribution System

EG: Grid

LS: low voltage side

LV1: The first low-voltage side equipment

LV2: Second low voltage side device

HV: high voltage side equipment

C1: Transformer

C2: Transformer

Claims (22)

An energy storage device detection system, comprising: a first energy storage device, coupled to a first low-voltage side device; a second energy storage device, coupled to a second low-voltage side device, and the second low-voltage side device is coupled to connected to the first low-voltage side device; and a controller, communicatively connected to the first energy storage device and the second energy storage device, wherein the controller is used to receive a first operating data from the first energy storage device, And receiving a second operation data from the second energy storage device, and the controller is also used to selectively perform a charge test or a discharge test on the first energy storage device or the second energy storage device. The energy storage device detection system as claimed in claim 1, wherein the controller is used to control the first energy storage device to operate in the discharge mode to perform the charging test on the second energy storage device. The energy storage device detection system as claimed in claim 1, wherein the controller is used to control the second energy storage device to operate in the discharge mode to perform the charging test on the first energy storage device. The energy storage device detection system as described in claim 2, wherein the controller is used to compare the first operation data when the first energy storage device operates in the discharge mode with an ideal data of a grid. The energy storage device detection system as described in claim 2, wherein The controller is used for comparing the second operating data of the second energy storage device being charged with ideal energy storage data. The energy storage device detection system according to claim 1, wherein the first low-voltage side device and the second low-voltage side device are connected through a high-voltage side device. The energy storage device detection system as described in Claim 6, wherein the controller is communicatively connected to the high-voltage side device, and is used to detect common-mode noise of the high-voltage side device. The energy storage device detection system as described in claim 6, wherein the controller is further configured to receive a high-voltage operation data of the high-voltage side device, and according to the first operation data, the second operation data, and the high-voltage operation data, A power phase sequence consistency among the first energy storage device, the second energy storage device and the high voltage side device is calculated. The energy storage device detection system as described in claim 6, wherein the controller is used to send a detection command to a relay of the high-voltage side device to detect whether the relay is operating normally. The energy storage device detection system according to claim 1, wherein when the communication connection between the controller and the first low-voltage side device and the second low-voltage side device is disconnected, the first low-voltage side device and the second low-voltage side device Low-voltage side equipment Automatically stop running. The energy storage device detection system according to claim 1, wherein the controller is used to adjust the frequency of the first energy storage device and the second energy storage device, and to detect the first energy storage device and the second energy storage device The real power or imaginary power of the equipment. An energy storage device detection system, comprising: a first energy storage device coupled to a first low-voltage side device; a second energy storage device coupled to the second energy storage device through a second low-voltage side device and a high-voltage side device the first low-voltage side device; and a controller, which is communicatively connected to the first energy storage device, the second energy storage device, and the high-voltage side device, wherein the controller is used to communicate between the first energy storage device and the second energy storage device When performing a charging and discharging test between energy devices, it is detected whether the operating data of the first energy storage device, the second energy storage device and the high-voltage side device meet a detection standard. The energy storage device testing system according to claim 12, wherein the controller is used to control the first energy storage device to operate in a discharge mode, so as to perform a charging test on the second energy storage device. The energy storage device detection system as claimed in claim 12, wherein the controller is used to control the second energy storage device to operate in a discharge mode, so as to perform a charging test on the first energy storage device. The energy storage device detection system as described in claim 13, wherein the controller is configured to receive a first operation data of the first energy storage device, and compare the first operation data with an ideal grid data. The energy storage device testing system as described in claim 13, wherein the controller is configured to receive a second operating data of the second energy storage device, and compare the second operating data with ideal energy storage data. The energy storage device detection system as described in claim 12, wherein the controller is also communicatively connected to the first low-voltage side device and the second low-voltage side device to receive a first low-voltage operation data and a second low-voltage operation data . The energy storage device detection system according to claim 12, wherein the controller is communicatively connected to the high-voltage side device, and is used for detecting common-mode noise of the high-voltage side device. The energy storage device detection system as described in claim 12, wherein the controller is further configured to receive a first operating data of the first energy storage device, a second operating data of the second energy storage device, and the high-voltage side A high-voltage operation data of the equipment, and according to the first operation data, the second operation data and the high-voltage operation data, calculate an electric power between the first energy storage equipment, the second energy storage equipment and the high-voltage side equipment Phase sequence consistency. The energy storage device detection system as described in claim 12, wherein the controller is used to send a detection command to a relay of the high-voltage side device to detect whether the relay is operating normally. The energy storage device detection system according to claim 12, wherein when the communication connection between the controller and the first low-voltage side device and the second low-voltage side device is disconnected, the first low-voltage side device and the second low-voltage side device The low-voltage side equipment automatically stops running. The energy storage device detection system according to claim 12, wherein the controller is used to adjust the frequency of the first energy storage device and the second energy storage device, and to detect the first energy storage device and the second energy storage device The real power or imaginary power of the equipment.

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