EMS system of energy storage power station, energy storage system and energy control method

Abstract

The invention discloses an EMS system of an energy storage power station, an energy storage system and an energy control method, and relates to the technical field of energy storage systems. The invention discloses an EMS system. The EMS system is in cable connection with a plurality of energy storage cabinets through a first cascade link and a second cascade link; each energy storage cabinet is provided with two pairs of input and output terminals, the first cascade link is formed based on one pair of input and output terminals among the energy storage cabinets, the second cascade link is formed based on the other pair of input and output terminals among the energy storage cabinets, and the second cascade link and the first cascade link form a reverse link; and when the EMS system detects that the communication fault occurs with the energy storage cabinet, two paths of dry contact signals are output, and the energy storage cabinet with the communication fault on the first cascade link and / or the second cascade link is controlled to stop. According to the invention, the power of the whole station can be timely, reliably and effectively adjusted, the operation safety of the whole station is ensured, the cost of the EMS system is reduced, and the reliability of the EMS system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to an EMS system of an energy storage power station, an energy storage system and an energy control method. Background Art

[0002] Energy storage power stations are usually composed of multiple energy storage cabinets and power loads. The distribution capacity of energy storage power stations usually has a maximum value. When operating beyond this value, it will cause overcapacity fines or even cause fires. Therefore, the power of the entire station of the energy storage power station needs to be operated below this distribution capacity to ensure system safety. To this end, an energy management system (EMS system for short) can be deployed in the energy storage power station to control the power of the entire station, thereby ensuring that the operating power of the entire station does not exceed the distribution capacity. In the prior art, the energy storage cabinet is connected to the EMS system after networking. The EMS system detects the operating power of the entire station in real time and remotely adjusts the power of each energy storage cabinet to ensure that the operating power of the entire station is lower than the distribution capacity; when the EMS system detects that the operating power of the entire station exceeds the distribution capacity, it will remotely adjust the power of the energy storage cabinet through the network. However, when a communication failure occurs in the energy storage cabinet, resulting in communication interruption, the EMS system cannot adjust the power of the energy storage cabinet in time, which will cause the operating power of the entire station to be out of control. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present application proposes an EMS system, an energy storage system and an energy control method for an energy storage power station. When a communication failure occurs in the energy storage cabinet and causes communication interruption, the operating power of the energy storage resistor can be adjusted in time.

[0004] In a first aspect, the present application provides an EMS system of an energy storage power station, the energy storage power station comprising a plurality of energy storage cabinets, the EMS system being connected to the plurality of energy storage cabinets via a first cascade link and a second cascade link; wherein each energy storage cabinet is configured with two pairs of open-in and open-out terminals, the first cascade link is formed between the energy storage cabinets based on one pair of the open-in and open-out terminals, the second cascade link is formed based on the other pair of the open-in and open-out terminals, and the second cascade link forms a reverse link with the first cascade link;

[0005] The EMS system is configured with a dry contact output module. When the EMS system detects that a communication failure occurs in an energy storage cabinet connected to the EMS system, the EMS system controls the dry contact output module to output two dry contact signals, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link; the EMS system controls the energy storage cabinet on the first cascade link and / or the second cascade link where the communication failure occurs to shut down based on the dry contact signal.

[0006] Furthermore, the EMS system is also used to determine whether the operating power of the energy storage power station exceeds the distribution capacity, and to send power scheduling instructions to multiple energy storage cabinets connected to the EMS system when it is determined that the operating power exceeds the distribution capacity.

[0007] Preferably, the EMS system is communicatively connected to the multiple energy storage cabinets based on an industrial bus, and the EMS system sends the power dispatching instruction to the multiple energy storage cabinets communicatively connected thereto based on the industrial bus; the EMS system detects whether a communication failure occurs in the energy storage cabinets communicatively connected thereto by sending the power dispatching instruction.

[0008] In a second aspect, the present application provides an energy control method for an energy storage power station, which is applied to the above-mentioned EMS system, and the method includes:

[0009] When the EMS system detects that a communication failure occurs in the energy storage cabinet connected to the EMS system, the EMS system controls the dry contact output module to output two dry contact signals, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link;

[0010] The EMS system controls the energy storage cabinets on the first cascade link and / or the second cascade link where communication failure occurs to shut down based on the dry contact signal.

[0011] Furthermore, the energy control method of the energy storage power station also includes: the EMS system determines in real time whether the operating power of the energy storage power station exceeds the distribution capacity, and when it is determined that the operating power exceeds the distribution capacity, sends a power scheduling instruction to multiple energy storage cabinets connected to the communication therewith.

[0012] Furthermore, after the EMS system sends the power scheduling instructions to the multiple energy storage cabinets, it detects whether each energy storage cabinet has completed power regulation based on the power scheduling instructions. If so, it indicates that the communication between the EMS system and the energy storage cabinet is normal; otherwise, it indicates that a communication failure occurs between the EMS system and the energy storage cabinet.

[0013] In a third aspect, the present application provides a control device, the control device comprising:

[0014] at least one processor;

[0015] and, a memory communicatively coupled to the at least one processor;

[0016] Wherein, a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the energy control method of the energy storage power station is implemented.

[0017] In a fourth aspect, the present application provides an energy storage system, the energy storage system comprising:

[0018] Multiple energy storage cabinets;

[0019] Each energy storage cabinet is configured with two pairs of open input and output terminals. A first cascade link is formed between the energy storage cabinets based on one pair of open input and output terminals, and a second cascade link is formed based on the other pair of open input and output terminals. The second cascade link forms a reverse link with the first cascade link.

[0020] Furthermore, the two pairs of open-in and open-out terminals of the energy storage cabinet include a first open-in terminal and a first open-out terminal, a second open-in terminal and a second open-out terminal;

[0021] The energy storage cabinet is configured to detect the signals of the first open-input terminal and the second open-input terminal in real time. When a dry contact signal is detected at the first open-input terminal, the first open-output terminal corresponding to the first open-input terminal is controlled to output the dry contact signal; when a dry contact signal is detected at the second open-input terminal, the second open-output terminal corresponding to the second open-input terminal is controlled to output the dry contact signal.

[0022] Furthermore, the energy storage cabinet is also used to control the energy storage cabinet to shut down when a dry contact signal is detected at the first input terminal or the second input terminal and a communication failure occurs between the energy storage cabinet and the EMS system.

[0023] The above one or more technical solutions of the present application have at least one or more of the following beneficial effects:

[0024] In the technical solution for implementing the present application, the EMS system of the energy storage power station is connected to a plurality of energy storage cabinet cables through a first cascade link and a second cascade link; wherein each energy storage cabinet is configured with two pairs of open-in and open-out terminals, the first cascade link is formed between each energy storage cabinet based on one pair of open-in and open-out terminals, the second cascade link is formed based on the other pair of open-in and open-out terminals, and the second cascade link forms a reverse link with the first cascade link; the EMS system is used to control the dry contact output module to output two dry contact signals when a communication failure is detected in the energy storage cabinet connected to it for communication, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link; the EMS system controls the energy storage cabinet with the communication failure on the first cascade link and / or the second cascade link to shut down based on the dry contact signal. This application scheme can reduce the number of dry contact output modules in the EMS system by cascading dry contacts; by configuring two cascade links for transmitting dry contact signals, it can ensure that when the dry contact on any link fails, the EMS system can still operate reliably to ensure that the power of the entire station is controlled; by designing reverse cascade links, it can ensure that the operating power can be effectively adjusted in a timely and reliable manner. The use of this application scheme can reduce the cost of the EMS system and improve the reliability of the EMS system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The disclosure of the present application will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings are used to represent similar components, among which:

[0026] Figure 1 This is a schematic diagram of the composition structure of a conventional energy storage power station;

[0027] Figure 2 is a schematic diagram showing the relationship between the whole station power curve and the whole station power distribution capacity according to an embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of the composition structure of a conventional energy storage power station equipped with an EMS system;

[0029] Figure 4 When Figure 3 Schematic diagram of an application scenario in which a communication failure occurs in an energy storage cabinet in an energy storage power station, resulting in communication interruption;

[0030] Figure 5 It is a schematic diagram of a configuration method of an open-in and open-out terminal for an energy storage cabinet provided according to an embodiment of the present application;

[0031] Figure 6According to an embodiment of the present application, an EMS system and Figure 5 The schematic diagram of the composition structure and working principle of the energy storage power station of the energy storage cabinet shown;

[0032] Figure 7 is based on Figure 6 The system structure shown is a schematic diagram of the timeliness effect of quickly shutting down the energy storage cabinet when a communication failure occurs;

[0033] Figure 8 is based on Figure 6 The schematic diagram of the reliability effect of the system structure controlling the rapid shutdown of the energy storage cabinet with communication failure is shown;

[0034] Fig. 9 It is a flow chart of the main implementation steps of an energy control method for an energy storage power station provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0036] In the description of the present application, "module" and "processor" may include hardware, software or a combination of the two. A module may include hardware circuits, various suitable sensors, communication ports, memory, and may also include software parts, such as program code, or a combination of software and hardware. The processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor or any other suitable processor. The processor has data and / or signal processing functions. The processor may be implemented in software, hardware or a combination of the two. Non-temporary computer-readable storage media include any suitable medium that can store program code, such as a disk, a hard disk, an optical disk, a flash memory, a read-only memory, a random access memory, etc. The term "A and / or B" means all possible combinations of A and B, such as only A, only B or A and B. The term "at least one A or B" or "at least one of A and B" has a similar meaning to "A and / or B" and may include only A, only B or A and B. The singular terms "one" and "the" may also include plural forms.

[0037] Here we first explain some terms involved in the embodiments of the present application.

[0038] EMS system: The full name is Energy Management System, which is a system used to monitor and control energy use and improve energy efficiency. It has a variety of functions and features designed to optimize energy use and management.

[0039] Dry contact: is a term widely used in the fields of communication and industrial control. It refers to a state of a passive switch, which has two basic states: closed and open. Dry contact signal, also known as switch output signal, is a common signal form in the circuit. It mainly refers to the signal output by the passive switch in the closed or open state.

[0040] The preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In addition, the embodiments and features in the embodiments of the present application may be combined with each other if there is no conflict.

[0041] Conventional energy storage power stations such as Figure 1 As shown, it is usually composed of multiple energy storage cabinets and other loads. The power of the entire energy storage power station needs to be operated below the power distribution capacity of the entire station to ensure system safety. For example, the power of the entire station needs to meet the following requirements: Figure 2 The relationship between the whole station power curve and the whole station distribution capacity is shown in Figure 1. To this end, the conventional solution is to deploy an EMS system in the energy storage power station to adjust the whole station power so that it does not exceed the whole station distribution capacity. Figure 3 As shown, the energy storage cabinets of the energy storage power station are networked and connected to the EMS system. The EMS system detects the operating power of the energy storage power station in real time. For example, the EMS can read the power value from the gateway meter to achieve the real-time detection of the operating power of the energy storage resistor. The EMS remotely adjusts the power of each energy storage cabinet based on the communication network to ensure that the operating power of the entire station does not exceed the distribution capacity. However, when a network communication failure occurs in the energy storage cabinet, resulting in communication interruption, the EMS system cannot adjust the power of the energy storage cabinet in time, which will cause the operating power of the entire station to be out of control. For example, Figure 4 As shown in the figure, the energy storage power station includes N energy storage cabinets, namely 1#, 2#, ..., N#, and each energy storage cabinet is connected to the EMS for communication (such as Figure 4 When a communication failure occurs between the 2# energy storage cabinet and the N# energy storage cabinet, resulting in communication interruption, the EMS system will not be able to adjust the power of the energy storage cabinet with the communication failure, and thus cannot ensure that the operating power of the entire station is controlled.

[0042] To solve this problem, one implementation method is to add a dry contact signal transmission line between the EMS and each energy storage cabinet (such as Figure 4When the communication is interrupted, the EMS outputs a dry contact signal to control the corresponding energy storage cabinet to shut down, thereby eliminating the risk of overcapacity. However, the biggest drawback of this solution is that the larger the power station, the more dry contact output modules (D0 modules for short) that the EMS needs to configure for outputting dry contact signals. From the perspective of standardized design, the EMS usually redundantly configures many DO modules, which wastes costs. When the signal cables of some DO modules have poor contact, the EMS cannot control the corresponding energy storage cabinet to shut down, and the power control of the entire station is at risk of failure.

[0043] To solve the above problems, the present application provides a preferred implementation method, which reduces the number of DO modules configured in the EMS system by means of dry contact cascading; by configuring two dry contact cascading links, it is ensured that when some dry contacts fail, the EMS system can still operate reliably to ensure that the power of the entire station is controlled; by designing the reverse link, the speed of regulating the power of the entire station by the EMS system is guaranteed. Figure 5 In the preferred embodiment of the present application, each energy storage cabinet of the energy storage power station is equipped with two pairs of open input and output terminals, such as Figure 5 The input 1 and output 1 shown are a pair of input and output terminals. Figure 5 The input 2 and output 2 shown are another pair of input and output terminals. In actual application scenarios, when the energy storage cabinet detects a signal from the input 1 terminal, it immediately outputs a signal from the output 1 terminal; when the energy storage cabinet detects a signal from the input 2 terminal, it immediately outputs a signal from the output 2 terminal.

[0044] See attached Figure 6 , is a method provided by the preferred embodiment of the present application that is configured with an EMS system and Figure 5 The composition structure of the energy storage power station of the energy storage cabinet shown in FIG. Figure 6 As shown, the energy storage power station includes multiple energy storage cabinets, and the EMS system (ie, the EMS shown in the figure) is connected to the multiple energy storage cabinets in communication (eg, Figure 6Specifically, the EMS system and all energy storage cabinets can be networked through industrial buses such as Ethernet, 485, CAN, etc. to establish a communication connection; further, the EMS system can read the power value of the gateway meter through the industrial bus to realize real-time detection of the operating power of the entire station. Specifically, when the EMS system detects that the operating power of the energy storage power station exceeds the distribution capacity, it sends a power dispatching instruction to multiple energy storage cabinets connected to it in communication based on the industrial bus; by sending the power dispatching instruction, it is detected whether the energy storage cabinet connected to it has a communication failure. For example, after sending the power dispatching instruction, the EMS system detects that the power of a certain energy storage cabinet is not effectively adjusted, or does not receive a response from the energy storage cabinet to the power dispatching instruction, then it is determined that the energy storage cabinet has a communication failure. At this time, the EMS system immediately outputs a dry contact signal for power adjustment. The response process of the EMS system detecting that the communication is interrupted and outputting the dry contact signal is about 1 to 2 seconds, thereby realizing timely and effective adjustment of the power of the entire station when a communication failure occurs.

[0045] In the preferred embodiment provided by the application, the EMS system is connected via a first cascade link (such as Figure 6 The lines with arrows 1.1, 1.2, 1.3, ..., 1.N are shown) and the second cascade link (such as Figure 6 The lines 2.1, 2.2, ..., 2.N with arrows shown in FIG. 2 and the plurality of energy storage cabinets (such as Figure 6 1#, 2#, ..., N# (a total of N energy storage cabinets) as shown; wherein each energy storage cabinet is configured with two pairs of open input and output terminals, and the first cascade link is formed between the energy storage cabinets based on one pair of open input and output terminals, and the second cascade link is formed based on the other pair of open input and output terminals, and the second cascade link and the first cascade link form a reverse link;

[0046] The EMS system is configured with a dry contact output module. When a communication failure is detected in the energy storage cabinet connected to the EMS system, the EMS system controls the dry contact output module to output two dry contact signals, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link; the dry contact signals between each energy storage cabinet are connected via cables; the EMS system controls the energy storage cabinet on the first cascade link and / or the second cascade link that has a communication failure to shut down based on the dry contact signal. Specifically, Figure 6As shown in the figure, the first dry contact signal enters the 1# energy storage cabinet through the 1.1 link. After the 1# energy storage cabinet detects the signal, it outputs the dry contact signal and enters the 2# energy storage cabinet through the 1.2 link. Similarly, the second to last energy storage cabinet outputs the dry contact signal to the N# energy storage cabinet through the 1.N link. The second dry contact signal enters the N# energy storage cabinet through the 2.1 link. After the N# energy storage cabinet detects the signal, it outputs the dry contact signal and enters the N-1# energy storage cabinet through the 2.2 link. Similarly, the second energy storage cabinet outputs the dry contact signal to the 1# energy storage cabinet through the 2.N link.

[0047] Based on the EMS system provided by the above preferred implementation scheme, an embodiment of the present application also provides an energy storage system, including multiple energy storage cabinets, each energy storage cabinet is configured with two pairs of open-in and open-out terminals, and a first cascade link is formed between the energy storage cabinets based on one pair of open-in and open-out terminals, and a second cascade link is formed based on the other pair of open-in and open-out terminals, and the second cascade link forms a reverse link with the first cascade link.

[0048] Specifically, the two pairs of open-in and open-out terminals of the energy storage cabinet include a first open-in terminal and a first open-out terminal, a second open-in terminal and a second open-out terminal. Accordingly, each energy storage cabinet is configured to detect the signals of its first open-in terminal and the second open-in terminal in real time, and when a dry contact signal is detected at the first open-in terminal, the first open-out terminal corresponding to the first open-in terminal is controlled to output a dry contact signal; when a dry contact signal is detected at the second open-in terminal, the second open-out terminal corresponding to the second open-in terminal is controlled to output a dry contact signal.

[0049] Furthermore, the energy storage cabinet is also used to control the energy storage cabinet to shut down immediately when a dry contact signal is detected at the first input terminal or the second input terminal and a communication failure occurs between the energy storage cabinet and the EMS system.

[0050] In a specific implementation manner, the dry contact signals between the energy storage cabinets in the embodiment of the present application are connected through cables. For example, the first output terminal of the 1# energy storage cabinet is connected to the first input terminal of the 2# energy storage cabinet, and the first output terminal of the 2# energy storage cabinet is connected to the first input terminal of the 3# energy storage cabinet, until the cable is cascaded to the first input terminal of the N# energy storage cabinet; the second output terminal of the N# energy storage cabinet is connected to the second input terminal of the N-1# energy storage cabinet, and the second output terminal of the N-1# energy storage cabinet is connected to the second input terminal of the N-2# energy storage cabinet, until the cable is cascaded to the second input terminal of the 1# energy storage cabinet.

[0051] In order to have a better understanding of the design of the above-mentioned EMS system and energy storage system provided in the preferred embodiment of the present application, Figure 7 and Figure 8 The effects achieved by the preferred embodiments of the present application are described.

[0052] like Figure 7 As shown in the figure, the two dry contact signal cables output by the EMS system are connected to the first input terminal of the 1# energy storage cabinet, and the other is connected to the second input terminal of the N# energy storage cabinet. The time required for the dry contact signal output by the EMS to be transmitted from the first energy storage cabinet, i.e., the 1# energy storage cabinet, to the last energy storage cabinet, i.e., the N# energy storage cabinet, is T. By configuring the reverse dry contact signal transmission link, it only takes T / 2 at most to ensure that all energy storage cabinets in the entire station receive the dry contact signal, thereby ensuring that the energy storage cabinet with communication failure is shut down quickly.

[0053] like Figure 8 As shown, the two-way dry contact signal cable output by the EMS system is connected to the first input terminal of the 1# energy storage cabinet, and the other is connected to the second input terminal of the N# energy storage cabinet. When any dry contact signal transmission link between energy storage cabinets, that is, any section of the cable, fails, due to the existence of two links, the dry contact signal can still be transmitted to each energy storage cabinet through the other cascade link, thereby ensuring the reliable shutdown of the energy storage cabinet with communication failure.

[0054] It can be seen that the EMS system provided in the embodiment of the present application can classify and process according to the communication status of the power station when the EMS system detects that the operating power of the power station exceeds the distribution capacity: when the communication of the entire station is normal, the power of the energy storage cabinet is reduced by power regulation in a preferential manner, thereby reducing the power of the entire station; when the EMS system detects that a communication failure occurs in the energy storage cabinet communicating with it, the EMS system simultaneously outputs two dry contact signals, the first dry contact signal is transmitted from the 1# energy storage cabinet to the N# energy storage cabinet, and the energy storage cabinet with the communication failure is immediately shut down; the second dry contact signal is transmitted from the N# energy storage cabinet to the 1# energy storage cabinet, and the energy storage cabinet with the communication failure is immediately shut down, and the energy storage cabinet with a normal communication network status can continue to receive power scheduling instructions sent from the EMS system, thereby reducing the operating power of the entire station.

[0055] Furthermore, based on the EMS system provided in the above embodiments of the present application, the embodiments of the present application also provide an energy control method for an energy storage power station, such as Fig. 9 As shown, the method includes:

[0056] Step S11: When the EMS system detects that a communication failure occurs in the energy storage cabinet connected to the EMS system, the EMS system controls the dry contact output module to output two dry contact signals, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link;

[0057] Step S12: the EMS system controls the energy storage cabinets on the first cascade link and / or the second cascade link where communication failure occurs to shut down based on the dry contact signal.

[0058] It should be understood that, before the above step S11, the EMS system also includes determining in real time whether the operating power of the energy storage power station exceeds the distribution capacity, and when determining that the operating power exceeds the distribution capacity, sending a power dispatching instruction to the multiple energy storage cabinets connected to the energy storage power station in communication therewith; further, after the EMS system sends the power dispatching instruction to the multiple energy storage cabinets, it detects whether each energy storage cabinet has completed power regulation based on the power dispatching instruction, and if so, it indicates that the communication between the EMS system and the energy storage cabinet is normal, otherwise, it indicates that a communication failure occurs between the EMS system and the energy storage cabinet.

[0059] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art can understand that in order to achieve the effect of the present application, different steps do not have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders. These adjusted schemes are equivalent to the technical schemes described in this application, and therefore will also fall within the scope of protection of this application.

[0060] It is understood by those skilled in the art that all or part of the processes in the method for implementing the above-mentioned embodiment of the present application can also be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device, medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal and software distribution medium, etc. that can carry the computer program code.

[0061] Another aspect of the present application also provides a computer-readable storage medium.

[0062] In an embodiment of a computer-readable storage medium according to the present application, the computer-readable storage medium may be configured to store a program for executing the energy control method of the energy storage power station of the above method embodiment, and the program may be loaded and run by the processor to implement the energy control method of the above energy storage power station. For ease of explanation, only the parts related to the embodiment of the present application are shown. For specific technical details not disclosed, please refer to the method part of the embodiment of the present application. The computer-readable storage medium may be a storage device formed by various electronic devices. Optionally, the computer-readable storage medium in the embodiment of the present application is a non-temporary computer-readable storage medium.

[0063] Another aspect of the present application also provides a control device.

[0064] In an embodiment of a control device according to the present application, the control device may include at least one processor; and a memory communicatively connected to the at least one processor; wherein a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the energy control method of the energy storage power station described in any of the above embodiments is implemented.

[0065] So far, the technical solution of the present application has been described in conjunction with an embodiment shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. An EMS system of an energy storage power station, the energy storage power station comprising a plurality of energy storage cabinets, characterized in that: The EMS system is connected to the plurality of energy storage cabinet cables via a first cascade link and a second cascade link; wherein each energy storage cabinet is configured with two pairs of open-input and open-output terminals, the first cascade link is formed between the energy storage cabinets based on one pair of open-input and open-output terminals, the second cascade link is formed based on the other pair of open-input and open-output terminals, and the second cascade link forms a reverse link with the first cascade link; The EMS system is configured with a dry contact output module. When the EMS system detects that a communication failure occurs in an energy storage cabinet connected to the EMS system, the EMS system controls the dry contact output module to output two dry contact signals, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link; the EMS system controls the energy storage cabinet on the first cascade link and / or the second cascade link where the communication failure occurs to shut down based on the dry contact signal.

2. The EMS system of the energy storage power station according to claim 1, characterized in that: The EMS system is also used to determine whether the operating power of the energy storage power station exceeds the distribution capacity, and to send power scheduling instructions to multiple energy storage cabinets connected to the EMS system when it is determined that the operating power exceeds the distribution capacity.

3. The EMS system of the energy storage power station according to claim 2, characterized in that: The EMS system is communicatively connected to the multiple energy storage cabinets based on an industrial bus, and the EMS system sends the power dispatching instruction to the multiple energy storage cabinets communicatively connected to the EMS system based on the industrial bus; the EMS system detects whether a communication failure occurs in the energy storage cabinets communicatively connected to the EMS system by sending the power dispatching instruction.

4. An energy control method for an energy storage power station, characterized in that: Applied to the EMS system according to any one of claims 1 to 3, the method comprises: When the EMS system detects that a communication failure occurs in the energy storage cabinet connected to the EMS system, the EMS system controls the dry contact output module to output two dry contact signals, wherein one dry contact signal is output to each energy storage cabinet via the first cascade link, and the other dry contact signal is output to each energy storage cabinet via the second cascade link; The EMS system controls the energy storage cabinets on the first cascade link and / or the second cascade link where communication failure occurs to shut down based on the dry contact signal.

5. The energy control method of the energy storage power station according to claim 4, characterized in that: The method further comprises: The EMS system determines in real time whether the operating power of the energy storage power station exceeds the distribution capacity, and when it is determined that the operating power exceeds the distribution capacity, sends a power dispatch instruction to multiple energy storage cabinets connected to the EMS system.

6. The energy control method of the energy storage power station according to claim 4, characterized in that: After the EMS system sends the power scheduling instruction to the multiple energy storage cabinets, it detects whether each energy storage cabinet has completed power regulation based on the power scheduling instruction. If so, it indicates that the communication between the EMS system and the energy storage cabinet is normal; otherwise, it indicates that a communication failure occurs between the EMS system and the energy storage cabinet.

7. A control device, characterized in that: include at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores a computer program, and when the computer program is executed by the at least one processor, the energy control method of the energy storage power station according to any one of claims 4 to 6 is implemented.

8. An energy storage system, characterized in that: include: Multiple energy storage cabinets; Each energy storage cabinet is configured with two pairs of open input and output terminals. A first cascade link is formed between the energy storage cabinets based on one pair of open input and output terminals, and a second cascade link is formed based on the other pair of open input and output terminals. The second cascade link forms a reverse link with the first cascade link.

9. The energy storage system according to claim 8, characterized in that: The two pairs of open-in and open-out terminals of the energy storage cabinet include a first open-in terminal and a first open-out terminal, a second open-in terminal and a second open-out terminal; The energy storage cabinet is configured to detect the signals of the first open-input terminal and the second open-input terminal in real time. When a dry contact signal is detected at the first open-input terminal, the first open-output terminal corresponding to the first open-input terminal is controlled to output the dry contact signal; when a dry contact signal is detected at the second open-input terminal, the second open-output terminal corresponding to the second open-input terminal is controlled to output the dry contact signal.

10. The energy storage system according to claim 9, characterized in that: The energy storage cabinet is also used to control the energy storage cabinet to shut down when a dry contact signal is detected at the first input terminal or the second input terminal and a communication failure occurs between the energy storage cabinet and the EMS system.

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