DC converter station cluster emergency reactive voltage regulation capability determination method and device, medium and product

Abstract

The invention discloses a direct current converter station cluster emergency reactive voltage regulation capability determination method and device, a medium and a product, and relates to the technical field of reactive voltage regulation, and the method comprises the steps: determining a direct current converter station cluster emergency reactive voltage regulation capability coordination index at a current moment according to operation data; performing normalization processing on the data in the time sequence of the operation data; determining an influence factor of the emergency reactive voltage regulation capability coordination index of the direct current converter station cluster according to the normalized time sequence; determining the emergency reactive voltage regulation capability coordination index of the direct current converter station cluster at the next moment according to the influence factor and the emergency reactive voltage regulation capability coordination index of the direct current converter station cluster at the current moment; and predicting the emergency reactive voltage regulation capability of the direct current converter station cluster according to the emergency reactive voltage regulation capability coordination index of the direct current converter station cluster at the next moment. According to the invention, the emergency reactive voltage regulation capability of the DC converter station cluster can be accurately judged.

Description

Technical Field

[0001] The present application relates to the technical field of reactive voltage regulation, and in particular to a method, device, medium and product for determining the emergency reactive voltage regulation capability of a DC converter station cluster. Background Art

[0002] With the widespread application of UHV DC transmission technology, the position of DC converter stations in the power grid is becoming increasingly important. DC converter stations not only undertake the task of large-capacity and long-distance power transmission, but also need to ensure the stable operation of the AC system. During the operation of the DC converter station cluster, various faults or abnormal conditions may be encountered, such as DC blocking, which will cause AC system voltage fluctuations and even voltage rise problems. Voltage instability will seriously affect the safe and stable operation of the power grid, and may cause serious consequences such as equipment damage and system collapse.

[0003] At present, reactive voltage regulation of DC converter station clusters mainly relies on reactive compensation devices, but in emergency situations, these devices may not respond quickly and effectively to meet the system's needs for reactive voltage regulation. In addition, the existing regulation methods lack an overall assessment and prediction of the emergency reactive voltage regulation capabilities of the DC converter station cluster, resulting in the inability to take timely and accurate regulation measures in emergency situations.

[0004] In view of the above problems, it is urgently necessary to provide a method or system that can accurately determine the emergency reactive voltage regulation capability of a DC converter station cluster. Summary of the invention

[0005] The purpose of this application is to provide a method, device, medium and product for determining the emergency reactive voltage regulation capability of a DC converter station cluster, which can accurately determine the emergency reactive voltage regulation capability of a DC converter station cluster.

[0006] To achieve the above objectives, this application provides the following solutions:

[0007] In a first aspect, the present application provides a method for determining the emergency reactive voltage regulation capability of a DC converter station cluster, the method comprising:

[0008] Acquire the operation data of the DC converter station cluster; and determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment according to the operation data; the operation data include: the DC voltage of the DC converter station, the DC current of the DC converter station, the AC voltage of the AC side of the DC converter station, the AC current of the AC side of the DC converter station, and the AC-DC conversion efficiency of the DC converter station; the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster is used to evaluate the emergency reactive voltage regulation capability of the DC converter station cluster;

[0009] Determine the time series of the operating data; and normalize the data in the time series respectively;

[0010] Determine the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster based on the normalized time series;

[0011] Determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment;

[0012] The emergency reactive voltage regulation capability of the DC converter station cluster is predicted according to the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment.

[0013] Optionally, the acquiring operation data of the DC converter station cluster; and determining the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the current moment according to the operation data, specifically includes:

[0014] Using the formula Determine the coordination index δ of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment ZLXT ;

[0015] Where n is a natural number, n∈1,2,..., r is the rth moment, and r is a natural number, r∈{1,2,...,n}; t r DC voltage of DC converter station at the moment; U ZL,N is the rated value of DC voltage of the DC converter station; t r DC current of DC converter station at the moment; I ZL,N is the rated value of DC current of the DC converter station; t r The AC voltage on the AC side of the DC converter station at the moment; U JL,N is the rated value of the AC voltage on the AC side of the DC converter station; t r The AC current on the AC side of the DC converter station at the moment; I JL,N is the rated value of the AC current on the AC side of the DC converter station; t r The AC / DC conversion efficiency of the DC converter station at the moment; η ZH,N is the rated value of the AC-DC conversion efficiency of the DC converter station; U ZL,max and U ZL,min The maximum and minimum values ​​of the DC voltage of the DC converter station respectively; I ZL,max and I ZL,min are the maximum and minimum values ​​of the DC current in the DC converter station respectively; U JL,max and U JL,minare the maximum and minimum values ​​of the AC voltage on the AC side of the DC converter station respectively; I JL,max and I JL,min are the maximum and minimum values ​​of the AC current on the AC side of the DC converter station respectively; η ZH,max and η ZH,min They are the maximum and minimum values ​​of the AC-DC conversion efficiency of the DC converter station respectively.

[0016] Optionally, determining the time series of the operating data; and normalizing the data in the time series respectively, specifically includes:

[0017] Using the formula Perform normalization processing;

[0018] in, t r Normalized value of DC voltage at the DC converter station at the moment; t r Normalized value of DC current in the DC converter station at the moment; t r The time is the normalized value of the AC voltage on the AC side of the DC converter station; t r The time is the normalized value of the AC current on the AC side of the DC converter station; t r The moment is the normalized value of the AC-DC conversion efficiency of the DC converter station.

[0019] Optionally, determining the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster according to the normalized time series specifically includes:

[0020] Using the formula Determine the influencing factors of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster;

[0021] in, is the influence factor of the DC voltage of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; is the influence factor of the DC current of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; is the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment of the AC voltage on the AC side of the DC converter station; is the influence factor of the AC current on the AC side of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; It is the influencing factor of the AC / DC conversion efficiency of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment.

[0022] Optionally, determining the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the next moment according to the influencing factor and the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the current moment specifically includes:

[0023] Using the formula

[0024] Determine the coordination index δ of the emergency reactive power voltage regulation capability of the DC converter station cluster at the next moment ZLXT-next .

[0025] Optionally, predicting the emergency reactive voltage regulation capability of the DC converter station cluster according to the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment specifically includes:

[0026] If δ ZLXT-next If it is less than 0.573, the AC battery state of charge is increased at the next moment;

[0027] If δ ZLXT-next If it is greater than or equal to 0.573, the batteries on the AC side of the DC converter station cluster will be maintained in normal working state at the next moment.

[0028] In a second aspect, the present application provides a device for determining an emergency reactive voltage regulation capability of a DC converter station cluster, the device comprising:

[0029] The coordination index determination module at the current moment is used to obtain the operation data of the DC converter station cluster; and determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment according to the operation data; the operation data includes: the DC voltage of the DC converter station, the DC current of the DC converter station, the AC voltage of the AC side of the DC converter station, the AC current of the AC side of the DC converter station, and the AC-DC conversion efficiency of the DC converter station; the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster is used to evaluate the emergency reactive voltage regulation capability of the DC converter station cluster;

[0030] A normalization processing module is used to determine the time series of the operating data and to perform normalization processing on the data in the time series respectively;

[0031] An influencing factor determination module is used to determine the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster according to the normalized time series;

[0032] A coordination index prediction module is used to determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment;

[0033] The emergency reactive voltage regulation capability prediction module is used to predict the emergency reactive voltage regulation capability of the DC converter station cluster according to the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the next moment.

[0034] In a third aspect, the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster.

[0035] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster.

[0036] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster.

[0037] According to the specific embodiments provided in this application, this application has the following technical effects:

[0038] The present application provides a method, device, medium and product for determining the emergency reactive voltage regulation capability of a DC converter station cluster, which can determine the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the next moment according to the influencing factor and the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the current moment, predict the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment, and adjust the operation of the battery on the AC side of the DC converter station cluster at the next moment according to the prediction result. It is helpful to improve the emergency reactive voltage regulation capability of the DC converter station cluster, help the safe and stable operation of the DC converter station cluster, and promote the coordinated development of the DC converter station cluster. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 This is a flow chart of a method for determining the emergency reactive voltage regulation capability of a DC converter station cluster in one embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] In an exemplary embodiment, Figure 1 As shown, a method for determining the emergency reactive voltage regulation capability of a DC converter station cluster is provided, and the method includes the following S101 to S105. Among them:

[0044] S101, obtaining operation data of a DC converter station cluster; and determining an emergency reactive voltage regulation capability coordination index of a DC converter station cluster at a current moment according to the operation data; the operation data includes: a DC voltage of a DC converter station, a DC current of a DC converter station, an AC voltage of an AC side of a DC converter station, an AC current of an AC side of a DC converter station, and an AC-DC conversion efficiency of a DC converter station; the emergency reactive voltage regulation capability coordination index of a DC converter station cluster is used to evaluate the emergency reactive voltage regulation capability of a DC converter station cluster;

[0045] Using the formula Determine the coordination index δ of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment ZLXT ;

[0046] Where t1, t2, ..., t r ,...,t n is a fixed time interval of n moments, where n is a natural number, n∈1,2,..., r is the rth moment, and r is a natural number, r∈{1,2,...,n}; t r DC voltage of DC converter station at the moment; U ZL,N is the rated value of DC voltage of the DC converter station; t r DC current of DC converter station at the moment; I ZL,N is the rated value of DC current of the DC converter station; t r The AC voltage on the AC side of the DC converter station at the moment; U JL,N is the rated value of the AC voltage on the AC side of the DC converter station; t r The AC current on the AC side of the DC converter station at the moment; I JL,Nis the rated value of the AC current on the AC side of the DC converter station; t r The AC / DC conversion efficiency of the DC converter station at the moment; η ZH,N is the rated value of the AC-DC conversion efficiency of the DC converter station; U ZL,max , U ZL,min are t1, t2, ..., t r ,...,t n The maximum and minimum values ​​of the DC voltage of the DC converter station at the moment I ZL,max , I ZL,min are t1, t2, ..., t r ,...,t n The maximum and minimum values ​​of the DC current in the DC converter station at the moment; U JL,max , U JL,min are t1, t2, ..., t r ,...,t n The maximum and minimum values ​​of the AC voltage on the AC side of the DC converter station at the moment I JL,max , I JL,min are t1, t2, ..., t r ,...,t n The maximum and minimum values ​​of the AC current on the AC side of the DC converter station at the time; η ZH,max , η ZH,min are t1, t2, ..., t r ,...,t n The maximum and minimum values ​​of the AC-DC conversion efficiency of the DC converter station at the moment.

[0047] In a specific embodiment, the time interval t=1s is set, and the operation data at n=300 moments are measured;

[0048] S102, determining the time series of the operating data; and normalizing the data in the time series respectively;

[0049] Using the formula Determine the time series of operational data;

[0050] Using the formula Perform normalization processing;

[0051] in, t r Normalized value of DC voltage at the DC converter station at the moment; t r Normalized value of DC current in the DC converter station at the moment; t r The time is the normalized value of the AC voltage on the AC side of the DC converter station; tr The time is the normalized value of the AC current on the AC side of the DC converter station; t r The moment is the normalized value of the AC-DC conversion efficiency of the DC converter station.

[0052] S103, determining an influencing factor of a coordination index of an emergency reactive voltage regulation capability of a DC converter station cluster according to the normalized time series;

[0053] Using the formula Determine the influencing factors of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster;

[0054] in, is the influence factor of the DC voltage of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; is the influence factor of the DC current of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; is the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment of the AC voltage on the AC side of the DC converter station; is the influence factor of the AC current on the AC side of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; It is the influencing factor of the AC / DC conversion efficiency of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment.

[0055] S104, determining the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment;

[0056] Using the formula

[0057] Determine the coordination index δ of the emergency reactive power voltage regulation capability of the DC converter station cluster at the next moment ZLXT-next .

[0058] S105: predicting the emergency reactive voltage regulation capability of the DC converter station cluster according to the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment.

[0059] If δ ZLXT-next If it is less than 0.573, it is considered that the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment is weak, and the AC battery charge state needs to be increased at the next moment, so that in the transient state (DC blocking), the AC side battery absorbs reactive power to suppress the AC side voltage increase;

[0060] If δ ZLXT-nextIf it is greater than or equal to 0.573, the DC converter station cluster is considered to be in emergency reactive power at the next moment.

[0061] In this application, when DC blocking occurs in the DC converter station cluster, it can be predicted in advance, and by controlling the AC battery, the battery on the AC side absorbs reactive power, suppresses the increase of the AC side voltage, makes it reach a stable state, and ensures the stability of the DC converter station cluster voltage;

[0062] Based on the same inventive concept, the embodiment of the present application also provides a device for determining the emergency reactive voltage regulation capability of a DC converter station cluster for implementing the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more devices for determining the emergency reactive voltage regulation capability of a DC converter station cluster provided below can be referred to the limitations of the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster in the above text, and will not be repeated here.

[0063] In an exemplary embodiment, a device for determining emergency reactive voltage regulation capability of a DC converter station cluster is provided, comprising:

[0064] The coordination index determination module at the current moment is used to obtain the operation data of the DC converter station cluster; and determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment according to the operation data; the operation data includes: the DC voltage of the DC converter station, the DC current of the DC converter station, the AC voltage of the AC side of the DC converter station, the AC current of the AC side of the DC converter station, and the AC-DC conversion efficiency of the DC converter station; the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster is used to evaluate the emergency reactive voltage regulation capability of the DC converter station cluster;

[0065] A normalization processing module is used to determine the time series of the operating data and to perform normalization processing on the data in the time series respectively;

[0066] An influencing factor determination module is used to determine the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster according to the normalized time series;

[0067] A coordination index prediction module is used to determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment;

[0068] The emergency reactive voltage regulation capability prediction module is used to predict the emergency reactive voltage regulation capability of the DC converter station cluster according to the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the next moment.

[0069] In an exemplary embodiment, a computer device is provided, which may be a server or a terminal. The computer device includes a processor, a memory, an input / output interface (I / O for short) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a method for determining the emergency reactive voltage regulation capability of a DC converter station cluster is implemented.

[0070] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0071] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0072] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0073] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0074] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0075] In this application, all actions to obtain signals, information or data are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0076] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for determining the emergency reactive voltage regulation capability of a DC converter station cluster, characterized in that: The method for determining the emergency reactive voltage regulation capability of a DC converter station cluster includes: Acquire the operation data of the DC converter station cluster; and determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment according to the operation data; the operation data include: the DC voltage of the DC converter station, the DC current of the DC converter station, the AC voltage of the AC side of the DC converter station, the AC current of the AC side of the DC converter station, and the AC-DC conversion efficiency of the DC converter station; the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster is used to evaluate the emergency reactive voltage regulation capability of the DC converter station cluster; Determine the time series of the operating data; and normalize the data in the time series respectively; Determine the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster based on the normalized time series; Determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment; The emergency reactive voltage regulation capability of the DC converter station cluster is predicted according to the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment.

2. The method for determining the emergency reactive voltage regulation capability of a DC converter station cluster according to claim 1, characterized in that: The obtaining of operation data of the DC converter station cluster; The coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment is determined based on the operation data, including: Using the formula Determine the coordination index δ of the emergency reactive power voltage regulation capability of the DC converter station cluster at the current moment ZLXT ; Where n is a natural number, n∈1,2,..., r is the rth moment, and r is a natural number, r∈{1,2,...,n}; t r DC voltage of DC converter station at the moment; U ZL,N is the rated value of DC voltage of the DC converter station; t r DC current of DC converter station at the moment; I ZL,N is the rated value of DC current of the DC converter station; t r The AC voltage on the AC side of the DC converter station at the moment; U JL,N is the rated value of the AC voltage on the AC side of the DC converter station; t r The AC current on the AC side of the DC converter station at the moment; I JL,N is the rated value of the AC current on the AC side of the DC converter station; t r The AC / DC conversion efficiency of the DC converter station at the moment; η ZH,N is the rated value of the AC-DC conversion efficiency of the DC converter station; U ZL,max and U ZL,min The maximum and minimum values ​​of the DC voltage of the DC converter station respectively; I ZL,max and I ZL,min are the maximum and minimum values ​​of the DC current in the DC converter station respectively; U JL,max and U JL,min are the maximum and minimum values ​​of the AC voltage on the AC side of the DC converter station respectively; I JL,max and I JL,min are the maximum and minimum values ​​of the AC current on the AC side of the DC converter station respectively; η ZH,max and η ZH,min They are the maximum and minimum values ​​of the AC-DC conversion efficiency of the DC converter station respectively.

3. The method for determining the emergency reactive voltage regulation capability of a DC converter station cluster according to claim 2, characterized in that: The step of determining the time series of the operating data and normalizing the data in the time series specifically includes: Using the formula Perform normalization processing; in, t r Normalized value of DC voltage at the DC converter station at the moment; t r Normalized value of DC current in the DC converter station at the moment; t r The time is the normalized value of the AC voltage on the AC side of the DC converter station; t r The time is the normalized value of the AC current on the AC side of the DC converter station; t r The moment is the normalized value of the AC-DC conversion efficiency of the DC converter station.

4. The method for determining the emergency reactive voltage regulation capability of a DC converter station cluster according to claim 3, characterized in that: The influencing factors of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster are determined according to the normalized time series, specifically including: Using the formula Determine the influencing factors of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster; in, is the influence factor of the DC voltage of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; is the influence factor of the DC current of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; is the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment of the AC voltage on the AC side of the DC converter station; is the influence factor of the AC current on the AC side of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment; It is the influencing factor of the AC / DC conversion efficiency of the DC converter station on the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment.

5. The method for determining the emergency reactive voltage regulation capability of a DC converter station cluster according to claim 4, characterized in that: Determining the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment specifically includes: Using the formula Determine the coordination index δ of the emergency reactive power voltage regulation capability of the DC converter station cluster at the next moment ZLXT-next .

6. The method for determining the emergency reactive voltage regulation capability of a DC converter station cluster according to claim 5, characterized in that: The predicting of the emergency reactive voltage regulation capability of the DC converter station cluster according to the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment specifically includes: If δ ZLXT-next If it is less than 0.573, the AC battery state of charge is increased at the next moment; If δ ZLXT-next If it is greater than or equal to 0.573, the batteries on the AC side of the DC converter station cluster will be maintained in normal working state at the next moment.

7. A device for determining the emergency reactive voltage regulation capability of a DC converter station cluster, characterized in that: The DC converter station cluster emergency reactive voltage regulation capability determination device comprises: The coordination index determination module at the current moment is used to obtain the operation data of the DC converter station cluster; and determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment according to the operation data; the operation data includes: the DC voltage of the DC converter station, the DC current of the DC converter station, the AC voltage of the AC side of the DC converter station, the AC current of the AC side of the DC converter station, and the AC-DC conversion efficiency of the DC converter station; the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster is used to evaluate the emergency reactive voltage regulation capability of the DC converter station cluster; A normalization processing module is used to determine the time series of the operating data and to perform normalization processing on the data in the time series respectively; An influencing factor determination module is used to determine the influencing factor of the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster according to the normalized time series; A coordination index prediction module is used to determine the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the next moment according to the influencing factor and the coordination index of the emergency reactive voltage regulation capability of the DC converter station cluster at the current moment; The emergency reactive voltage regulation capability prediction module is used to predict the emergency reactive voltage regulation capability of the DC converter station cluster according to the emergency reactive voltage regulation capability coordination index of the DC converter station cluster at the next moment.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster described in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for determining the emergency reactive voltage regulation capability of a DC converter station cluster described in any one of claims 1 to 6 is implemented.

Images