A collaborative control method and system for distribution network protection measurement and control terminal

Abstract

The present invention relates to the field of distribution network protection technology, and discloses a collaborative control method and system for distribution network protection and measurement and control terminals, including a regional safety data acquisition module, a protection data analysis module and a collaborative control module, wherein the regional safety data acquisition module includes a regional abnormal signal acquisition unit, a regional load acquisition unit and a regional risk data acquisition unit. The system warns of risks in different regions based on abnormal risk coefficients. After judging the warning, the dispatching unit performs dispatch analysis based on the comprehensive protection coefficient of the region where each distribution network protection and measurement and control terminal is located and the distance between the region other than the warning region and the warning region. When dispatching, the one with the smallest dispatch coefficient is selected to dispatch power so that the high load problem in the region is temporarily handled, thereby ensuring that when an abnormality occurs in the current region, the power of the remaining normal regions is temporarily dispatched, and the dispatch is resumed when the staff has handled the abnormality.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution network protection, and in particular to a coordinated control method and system for a distribution network protection measurement and control terminal. Background Art

[0002] The construction of intelligent distribution network can enhance the power supply capacity of distribution network, reduce the operation and maintenance cost of distribution network, optimize its monitoring mode, improve the operation level of distribution network, and is the long-term development direction of distribution network. The intelligent distribution network system consists of three parts: main station, communication system, and intelligent measurement and control terminal. It is a complete information transmission and processing system that can realize remote management of distribution network operation. Among them, the intelligent measurement and control terminal is a key part. Due to the current distribution network dispatching, most of the power dispatching is dispatched nearby, which may cause the power load in adjacent areas to be too high. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a collaborative control method and system for distribution network protection and measurement and control terminals, which has the advantages of risk dispatch protection and solves the above-mentioned technical problems.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a collaborative control system for a distribution network protection and measurement and control terminal, comprising a regional safety data acquisition module, a protection data analysis module and a collaborative control module;

[0005] The regional safety data acquisition module includes a regional abnormal signal acquisition unit, a regional load acquisition unit and a regional risk data acquisition unit. The regional abnormal signal acquisition unit is used to collect abnormal signals in the area where each distribution network protection and measurement and control terminal is located, and calculate the abnormal coefficient corresponding to the circuit abnormal signal for storage. The regional load acquisition unit is used to collect the power load in the area where each distribution network protection and measurement and control terminal is located. The regional risk data acquisition unit is used to collect risk data in the area where each distribution network protection and measurement and control terminal is located;

[0006] The protection data analysis module obtains the comprehensive protection coefficient of the area where each distribution network protection and measurement control terminal is located based on the risk data in the area where each distribution network protection and measurement control terminal is located and the power load in the area where each distribution network protection and measurement control terminal is located. The protection data analysis module is also used to perform a comprehensive calculation on the abnormal signal in the area where each distribution network protection and measurement control terminal is located to obtain the abnormal risk coefficient;

[0007] The collaborative control module includes a dispatching unit, an early warning unit and a maintenance data synchronization unit. The early warning unit warns of risks in different areas based on abnormal risk coefficients. After judging the early warning, the dispatching unit performs dispatching analysis and dispatching based on the comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located and the distance between the area other than the early warning area and the early warning area. At the same time, the maintenance data synchronization unit synchronizes the dispatching data to all distribution network protection and measurement and control terminals.

[0008] As a preferred technical solution of the present invention, the specific expression of the regional abnormal signal acquisition unit for collecting abnormal signals in the area where each distribution network protection measurement and control terminal is located is as follows:

[0009]

[0010] in, represents the total data set of abnormal signals, They represent the abnormal signal data set of the area where the first distribution network protection and measurement terminal is located, , No. The abnormal signal data set of the area where the distribution network protection and measurement and control terminal is located, , No. The abnormal signal data set of the area where the distribution network protection and measurement and control terminal is located, and , among which, Abnormal signal dataset of the area where the distribution network protection and measurement and control terminal is located The specific expression is as follows:

[0011]

[0012] in, Respectively represent The average value of current, voltage and temperature detected by the distribution network protection and control terminal.

[0013] As a preferred technical solution of the present invention, the specific expression for storing the abnormal coefficient corresponding to the circuit abnormal signal calculation by the regional abnormal signal acquisition unit is as follows:

[0014]

[0015] in, represents the anomaly coefficient dataset, They represent the abnormal coefficient of the area where the first distribution network protection and measurement terminal is located, , No. The abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located, , No. The abnormal coefficient of the area where the distribution network protection and control terminal is located, The expression of the abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located is as follows:

[0016]

[0017] in, Respectively represent The average value of current, voltage and temperature detected by the distribution network protection and measurement terminal, , , Respectively represent the standard values ​​of current, voltage and temperature, express The absolute value of express The absolute value of express The absolute value of .

[0018] As a preferred technical solution of the present invention, the specific expression of the power load collected by the regional load collection unit in the area where each distribution network protection and measurement and control terminal is located is as follows:

[0019]

[0020] in, represents the power load dataset, They represent the power load in the area where the first distribution network protection and measurement terminal is located, , No. The power load in the area where the distribution network protection and measurement and control terminal is located, , No. The power load in the area where the distribution network protection and measurement and control terminal is located.

[0021] As a preferred technical solution of the present invention, the specific expression of the risk data collected by the regional risk data collection unit in the area where each distribution network protection and measurement and control terminal is located is as follows:

[0022]

[0023] in, Represents a risk dataset in a region, They respectively represent the risk data of the area where the first distribution network protection and measurement terminal is located, , No. The risk data of the area where the distribution network protection and measurement and control terminals are located, , No. The risk data of the area where the distribution network protection and measurement and control terminal is located, the Risk data of the area where the distribution network protection and measurement and control terminals are located The expression is as follows:

[0024]

[0025] in, Indicates The number of schools in the area where the distribution network protection and measurement and control terminals are located, Indicates The population of the area where the distribution network protection and measurement and control terminal is located, Indicates the number of government departments.

[0026] As a preferred technical solution of the present invention, the protection data analysis module obtains the specific expression of the comprehensive protection coefficient of each distribution network protection and control terminal area based on the risk data in the area where each distribution network protection and control terminal is located and the power load in the area where each distribution network protection and control terminal is located, as follows:

[0027]

[0028] in, Indicates The comprehensive protection coefficient of the area where the distribution network protection and measurement and control terminal is located, Indicates The power load in the area where the distribution network protection and measurement and control terminal is located, and They represent weight coefficients that sum to 1, Indicates The risk data of the area where the distribution network protection and measurement and control terminals are located.

[0029] As a preferred technical solution of the present invention, the protection data analysis module performs comprehensive calculation on the abnormal signals of each area, and obtains the specific expression of the abnormal risk coefficient as follows:

[0030]

[0031] in, Indicates The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located, Indicates The abnormal risk threshold of the area where the distribution network protection and measurement and control terminal is located, Indicates The abnormality coefficient of the area where the distribution network protection and measurement and control terminal is located.

[0032] As a preferred technical solution of the present invention, the early warning unit warns of risks in different areas based on the abnormal risk coefficient, specifically: The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located >0, a regional warning is issued. The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located When ≤0, no regional warning is issued.

[0033] As a preferred technical solution of the present invention, the dispatching unit performs a dispatching analysis based on the comprehensive protection coefficient of the area where each distribution network protection and measurement terminal is located and the distance between the area other than the warning area and the warning area, and the specific expression is as follows:

[0034]

[0035] in, Indicates The area where the distribution network protection and measurement control terminal is located and the The distance between the distribution network protection and control terminals. Indicates The distribution network protection and measurement terminal is located in the area and the The dispatch coefficient between the areas where the distribution network protection and measurement and control terminals are located, Indicates The comprehensive protection coefficient of the area where the distribution network protection and measurement and control terminal is located, ,and .

[0036] The present invention also provides a coordinated control method for a distribution network protection measurement and control terminal, comprising the following steps:

[0037] Step 1: Collect abnormal signals, power load and risk data of each distribution network protection and measurement terminal in the area where it is located, and store the abnormal coefficient corresponding to the circuit abnormal signal calculation;

[0038] Step 2: Based on the risk data collected by the regional risk data collection unit and the power load of the area where each distribution network protection and measurement and control terminal is located, a comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located is obtained;

[0039] Step 3: Comprehensively calculate the abnormal signals in each area to obtain the abnormal risk coefficient;

[0040] Step 4: Issue early warnings for risks in different areas based on abnormal risk coefficients. After judging the early warning, conduct dispatch analysis and dispatch based on the comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located and the distance between the area other than the early warning area and the early warning area. At the same time, synchronize the dispatch data to all distribution network protection and measurement and control terminals.

[0041] Compared with the prior art, the present invention provides a coordinated control method and system for distribution network protection and measurement and control terminals, which has the following beneficial effects:

[0042] The present invention issues early warnings for risks in different areas based on abnormal risk coefficients. After judging the early warning, the dispatching unit performs dispatching analysis based on the comprehensive protection coefficient of the area where each distribution network protection and measurement control terminal is located and the distance between the area other than the early warning area and the early warning area. When performing dispatching, the one with the smallest dispatching coefficient is selected to dispatch power so that the high load problem in this area is temporarily handled, thereby ensuring that when an abnormality occurs in the current area, the power of other normal areas is temporarily dispatched, and when the staff has handled the abnormality, the dispatching is resumed. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the system framework of the present invention;

[0044] Figure 2 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1 - Figure 2 , a collaborative control system for a distribution network protection and measurement and control terminal, including a regional safety data acquisition module, a protection data analysis module and a collaborative control module;

[0047] The regional safety data acquisition module includes a regional abnormal signal acquisition unit, a regional load acquisition unit and a regional risk data acquisition unit. The regional abnormal signal acquisition unit is used to collect abnormal signals in the area where each distribution network protection and measurement and control terminal is located, and calculate the abnormal coefficient corresponding to the circuit abnormal signal for storage. The regional load acquisition unit is used to collect the power load in the area where each distribution network protection and measurement and control terminal is located. The regional risk data acquisition unit is used to collect risk data in the area where each distribution network protection and measurement and control terminal is located. The specific expression of the regional abnormal signal acquisition unit for collecting abnormal signals in the area where each distribution network protection and measurement and control terminal is located is as follows:

[0048]

[0049] in, represents the total data set of abnormal signals, They represent the abnormal signal data set of the area where the first distribution network protection and measurement terminal is located, , No. The abnormal signal data set of the area where the distribution network protection and measurement and control terminal is located, , No. The abnormal signal data set of the area where the distribution network protection and measurement and control terminal is located, and , among which, Abnormal signal dataset of the area where the distribution network protection and measurement and control terminal is located The specific expression is as follows:

[0050]

[0051] in, Respectively represent The specific expression for storing the abnormal coefficient corresponding to the circuit abnormal signal calculated by the regional abnormal signal acquisition unit is as follows:

[0052]

[0053] in, represents the anomaly coefficient dataset, They represent the abnormal coefficient of the area where the first distribution network protection and measurement terminal is located, , No. The abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located, , No. The abnormal coefficient of the area where the distribution network protection and control terminal is located, The expression of the abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located is as follows:

[0054]

[0055] in, Respectively represent The average value of current, voltage and temperature detected by the distribution network protection and measurement terminal, , , Respectively represent the standard values ​​of current, voltage and temperature, express The absolute value of express The absolute value of express The specific expression of the power load collected by the regional load collection unit in the area where each distribution network protection and measurement and control terminal is located is as follows:

[0056]

[0057] in, represents the power load dataset, They represent the power load in the area where the first distribution network protection and measurement terminal is located, , No. The power load in the area where the distribution network protection and measurement and control terminal is located, , No. The specific expression of the regional risk data acquisition unit collecting the risk data in the area where each distribution network protection and measurement and control terminal is located is as follows:

[0058]

[0059] in, Represents a risk dataset in a region, They respectively represent the risk data of the area where the first distribution network protection and measurement terminal is located, , No. The risk data of the area where the distribution network protection and measurement and control terminals are located, , No. The risk data of the area where the distribution network protection and measurement and control terminals are located, Risk data of the area where the distribution network protection and measurement and control terminals are located The expression is as follows:

[0060]

[0061] in, Indicates The number of schools in the area where the distribution network protection and measurement and control terminals are located, Indicates The population of the area where the distribution network protection and measurement and control terminal is located, Indicates the number of government departments;

[0062] The protection data analysis module obtains the comprehensive protection coefficient of each distribution network protection and control terminal area based on the risk data of each distribution network protection and control terminal area and the power load of each distribution network protection and control terminal area. The protection data analysis module is also used to perform comprehensive calculations on the abnormal signals of each distribution network protection and control terminal area to obtain the abnormal risk coefficient. The specific expression of the protection data analysis module is as follows:

[0063]

[0064] in, Indicates The comprehensive protection coefficient of the area where the distribution network protection and measurement and control terminal is located, Indicates The power load in the area where the distribution network protection and measurement and control terminal is located, and They represent weight coefficients that sum to 1, Indicates The protection data analysis module calculates the abnormal signals of each area and obtains the specific expression of the abnormal risk coefficient as follows:

[0065]

[0066] in, Indicates The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located, Indicates The abnormal risk threshold of the area where the distribution network protection and measurement and control terminal is located, Indicates The abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located;

[0067] The collaborative control module includes a dispatching unit, an early warning unit and a maintenance data synchronization unit. The early warning unit warns of risks in different areas based on the abnormal risk coefficient. After judging the early warning, the dispatching unit performs dispatch analysis and dispatch based on the comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located and the distance between the area other than the early warning area and the early warning area. At the same time, the maintenance data synchronization unit synchronizes the dispatching data to all distribution network protection and measurement and control terminals. The early warning unit warns of risks in different areas based on the abnormal risk coefficient. Specifically: when the first The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located >0, a regional warning is issued. The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located When ≤0, no regional warning is issued. The dispatch unit performs dispatch analysis based on the comprehensive protection coefficient of the area where each distribution network protection and measurement terminal is located and the distance between the area other than the warning area and the warning area. The specific expression is as follows:

[0068]

[0069] in, Indicates The area where the distribution network protection and measurement control terminal is located and the The distance between the distribution network protection and control terminals. Indicates The distribution network protection and measurement terminal is located in the area and the The dispatch coefficient between the areas where the distribution network protection and measurement and control terminals are located, Indicates The comprehensive protection coefficient of the area where the distribution network protection and measurement and control terminal is located, ,and , In essence The area selected during calculation corresponds to It is essentially a collection that stores The value of the area where the distribution network protection and measurement and control terminal is located to the rest of the areas is selected when dispatching. The smallest one (i.e., the one with low load pressure and the shortest distance) is selected to dispatch power so that the high load problem in this area is temporarily handled. This ensures that when an abnormality occurs in the current area, the power of the remaining normal areas will be temporarily dispatched, and the dispatch will be resumed when the staff has handled the abnormality.

[0070] Example:

[0071] This embodiment will provide data description of the scheduling process:

[0072] This example records that there are 3 areas in place A, among which the abnormal coefficient , the power load data set is:

[0073] , , , , , at this time They are , , Issue an early warning to the third area, and calculate its dispatch coefficient to the remaining two areas:

[0074]

[0075]

[0076] and They represent the distances from the center of area 3 to the centers of area 1 and area 2 respectively. At this time, area 2 is selected for load scheduling;

[0077] The present invention also provides a coordinated control method for a distribution network protection measurement and control terminal, comprising the following steps:

[0078] Step 1: Collect abnormal signals, power load and risk data of each distribution network protection and measurement terminal in the area where it is located, and store the abnormal coefficient corresponding to the circuit abnormal signal calculation;

[0079] Step 2: Based on the risk data collected by the regional risk data collection unit and the power load of the area where each distribution network protection and measurement and control terminal is located, a comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located is obtained;

[0080] Step 3: Comprehensively calculate the abnormal signals in each area to obtain the abnormal risk coefficient;

[0081] Step 4: Issue early warnings for risks in different areas based on abnormal risk coefficients. After judging the early warning, conduct dispatch analysis and dispatch based on the comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located and the distance between the area other than the early warning area and the early warning area. At the same time, synchronize the dispatch data to all distribution network protection and measurement and control terminals.

[0082] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coordinated control system for distribution network protection and measurement and control terminals, characterized in that: It includes regional safety data acquisition module, protection data analysis module and collaborative control module; The regional safety data acquisition module includes a regional abnormal signal acquisition unit, a regional load acquisition unit and a regional risk data acquisition unit. The regional abnormal signal acquisition unit is used to collect abnormal signals in the area where each distribution network protection and measurement and control terminal is located, and calculate the abnormal coefficient corresponding to the circuit abnormal signal for storage. The regional load acquisition unit is used to collect the power load in the area where each distribution network protection and measurement and control terminal is located. The regional risk data acquisition unit is used to collect risk data in the area where each distribution network protection and measurement and control terminal is located; The protection data analysis module obtains the comprehensive protection coefficient of the area where each distribution network protection and measurement control terminal is located based on the risk data in the area where each distribution network protection and measurement control terminal is located and the power load in the area where each distribution network protection and measurement control terminal is located. The protection data analysis module is also used to perform a comprehensive calculation on the abnormal signal in the area where each distribution network protection and measurement control terminal is located to obtain the abnormal risk coefficient; The protection data analysis module obtains the specific expression of the comprehensive protection coefficient of each distribution network protection and control terminal area based on the risk data of each distribution network protection and control terminal area and the power load of each distribution network protection and control terminal area as follows: ， in, Indicates The comprehensive protection coefficient of the area where the distribution network protection and measurement and control terminal is located, Indicates The power load in the area where the distribution network protection and measurement and control terminal is located, and They represent weight coefficients that sum to 1, Indicates Risk data of the area where the distribution network protection and measurement and control terminals are located; The protection data analysis module performs comprehensive calculations on the abnormal signals of each area, and obtains the specific expression of the abnormal risk coefficient as follows: ， in, Indicates The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located, Indicates The abnormal risk threshold of the area where the distribution network protection and measurement and control terminal is located, Indicates The abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located; The collaborative control module includes a dispatching unit, an early warning unit and a maintenance data synchronization unit. The early warning unit warns of risks in different areas based on abnormal risk coefficients. After judging the early warning, the dispatching unit performs dispatch analysis and dispatch based on the comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located and the distance between the area other than the early warning area and the early warning area. At the same time, the maintenance data synchronization unit synchronizes the dispatching data to all distribution network protection and measurement and control terminals. The early warning unit warns of risks in different areas based on the abnormal risk coefficient, specifically: The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located >0, a regional warning is issued. The abnormal risk coefficient of the area where the distribution network protection and measurement and control terminal is located When ≤0, no regional warning is issued; The dispatching unit performs dispatching analysis based on the comprehensive protection coefficient of the area where each distribution network protection and measurement terminal is located and the distance between the area other than the warning area and the warning area. The specific expression is as follows: ， in, Indicates The area where the distribution network protection and measurement control terminal is located and the The distance between the distribution network protection and control terminals. Indicates The area where the distribution network protection and measurement control terminal is located and the The dispatch coefficient between the areas where the distribution network protection and measurement and control terminals are located, Indicates The comprehensive protection coefficient of the area where the distribution network protection and measurement and control terminal is located, ,and .

2. The coordinated control system of a distribution network protection and measurement and control terminal according to claim 1 is characterized in that: The specific expression of the regional abnormal signal acquisition unit for collecting abnormal signals in the area where each distribution network protection measurement and control terminal is located is as follows: ， in, represents the total data set of abnormal signals, They represent the abnormal signal data set of the area where the first distribution network protection and measurement terminal is located, , No. The abnormal signal data set of the area where the distribution network protection and measurement and control terminal is located, , No. The abnormal signal data set of the area where the distribution network protection and measurement and control terminal is located, and , among which, Abnormal signal dataset of the area where the distribution network protection and measurement and control terminal is located The specific expression is as follows: ， in, Respectively represent The average value of current, voltage and temperature detected by the distribution network protection and control terminal.

3. The coordinated control system of a distribution network protection and measurement and control terminal according to claim 2 is characterized in that: The specific expression for storing the abnormal coefficient corresponding to the circuit abnormal signal calculation by the regional abnormal signal acquisition unit is as follows: ， in, represents the anomaly coefficient dataset, They represent the abnormal coefficient of the area where the first distribution network protection and measurement terminal is located, , No. The abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located, , No. The abnormal coefficient of the area where the distribution network protection and control terminal is located, The expression of the abnormal coefficient of the area where the distribution network protection and measurement and control terminal is located is as follows: ， in, Respectively represent The average value of current, voltage and temperature detected by the distribution network protection and measurement terminal, , , Respectively represent the standard values ​​of current, voltage and temperature, express The absolute value of express The absolute value of express The absolute value of .

4. The coordinated control system of a distribution network protection and measurement and control terminal according to claim 3 is characterized in that: The specific expression of the power load collected by the regional load collection unit in the area where each distribution network protection and measurement and control terminal is located is as follows: ， in, represents the power load dataset, They represent the power load in the area where the first distribution network protection and measurement terminal is located, , No. The power load in the area where the distribution network protection and measurement and control terminal is located, , No. The power load in the area where the distribution network protection and measurement and control terminal is located.

5. The coordinated control system of the distribution network protection and measurement and control terminal according to claim 4 is characterized in that: The specific expression of the risk data collected by the regional risk data collection unit in the area where each distribution network protection and measurement and control terminal is located is as follows: ， in, Represents a risk dataset in a region, They respectively represent the risk data of the area where the first distribution network protection and measurement terminal is located, , No. The risk data of the area where the distribution network protection and measurement and control terminals are located, , No. The risk data of the area where the distribution network protection and measurement and control terminal is located, the Risk data of the area where the distribution network protection and measurement and control terminals are located The expression is as follows: ， in, Indicates The number of schools in the area where the distribution network protection and measurement and control terminals are located, Indicates The population of the area where the distribution network protection and measurement and control terminal is located, represents the total population, Indicates the number of government departments.

6. A method for cooperative control of a distribution network protection and measurement and control terminal, based on a cooperative control system of a distribution network protection and measurement and control terminal according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Collect abnormal signals, power load and risk data of each distribution network protection and measurement terminal in the area where it is located, and store the abnormal coefficient corresponding to the circuit abnormal signal calculation; Step 2: Based on the risk data collected by the regional risk data collection unit and the power load of the area where each distribution network protection and measurement and control terminal is located, a comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located is obtained; Step 3: Comprehensively calculate the abnormal signals in each area to obtain the abnormal risk coefficient; Step 4: Issue early warnings for risks in different areas based on abnormal risk coefficients. After judging the early warning, conduct dispatch analysis and dispatch based on the comprehensive protection coefficient of the area where each distribution network protection and measurement and control terminal is located and the distance between the area other than the early warning area and the early warning area. At the same time, synchronize the dispatch data to all distribution network protection and measurement and control terminals.

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