Establishment method of substation protection and monitoring system intensive index system

Abstract

This invention discloses a method for establishing a centralized indicator system for a substation protection and monitoring system, comprising the following steps: establishing an equipment centralized indicator system for the substation protection and monitoring system; establishing a network centralized indicator system for the substation protection and monitoring system; establishing a monitoring capability centralized indicator system for the substation protection and monitoring system; establishing a land area centralized indicator system for the substation protection and monitoring system; combining the above centralized indicator systems, network centralized indicator system, monitoring capability centralized indicator system, and land area centralized indicator system; and verification. This invention employs the above method for establishing a centralized indicator system for a substation protection and monitoring system to provide a basis for constructing an independent and controllable substation protection and monitoring system, thereby continuously improving system performance and achieving the goal of improving system architecture.

Description

Technical Field

[0001] This invention relates to an electric power technology, and more particularly to a method for establishing an integrated index system for a substation protection and monitoring system. Background Technology

[0002] Power grid security is related to national security. Substations are the hubs of power grid energy flow, business flow and data flow. As the core infrastructure of substations, protection and monitoring systems bear the heavy responsibility of substation information collection, real-time monitoring, operation control and fault isolation, which is crucial for the safe and stable operation of the power grid.

[0003] Despite the rapid development of my country's domestically developed chips and operating systems, due to technological limitations, more than 95% of the core chips used in substation protection and monitoring systems still rely on imports, and most of the operating systems are foreign, posing information security risks and seriously threatening the safe and stable operation of the power grid. Therefore, it is urgent to establish an independent and controllable substation protection and monitoring system.

[0004] However, with the application of domestically developed and controllable chips and operating systems, the integrated performance of substation protection and monitoring systems may be affected. Therefore, establishing an independent and integrated indicator system for substation protection and monitoring systems using domestically developed and controllable chips and operating systems is of great practical significance for identifying system weaknesses and improving system architecture. Summary of the Invention

[0005] The purpose of this invention is to provide a method for establishing an integrated index system for substation protection and monitoring systems. This method is used to evaluate the integrated performance of substation protection and monitoring systems that use domestically developed and controllable chips and operating systems, establish a comprehensive and suitable evaluation index system, provide a basis for building domestically developed and controllable substation protection and monitoring systems, thereby continuously improving system performance and achieving the goal of improving system architecture.

[0006] To achieve the above objectives, this invention provides a method for establishing an integrated index system for substation protection and monitoring systems, comprising the following steps:

[0007] S1. Establish an equipment integration indicator system for substation protection and monitoring systems;

[0008] S2. Establish a network-integrated indicator system for substation protection and monitoring systems;

[0009] S3. Establish a comprehensive indicator system for monitoring capabilities of substation protection and monitoring systems;

[0010] S4. Establish a land-use efficiency index system for substation protection and monitoring systems;

[0011] S5. Combine the above-mentioned equipment integration index system, network integration index system, monitoring capability integration index system, and land use integration index system of the substation protection and monitoring system;

[0012] S6. Select some indicators from the integrated indicator system of substation protection and monitoring system, combine data from different substations, calculate the indicator weights using the entropy method, and then conduct case analysis to calculate the overall evaluation results of the corresponding substation indicators, so as to verify the practical value of the integrated indicators of the substation protection and monitoring system.

[0013] Preferably, the equipment integration index system of the substation protection and monitoring system mentioned in step S1 includes the following parameters: total number of primary equipment, total number of secondary equipment, integration degree of secondary equipment quantity, integration degree of protection equipment quantity, integration degree of monitoring equipment quantity, integration degree of measurement and control equipment quantity, integration degree of switch quantity, integration degree of total length of secondary cables, and integration degree of total length of secondary optical cables.

[0014] Preferably, the total number of primary equipment is the number of all primary equipment in the substation obtained from data statistics, which is used to measure the configuration and scale of the substation;

[0015] The total number of secondary devices is the number of all secondary devices in the substation protection and monitoring system obtained from data statistics.

[0016] The secondary equipment quantity concentration ratio is used to measure the degree of concentration of secondary equipment in the substation protection and monitoring system, and is calculated by the following formula:

[0017]

[0018] The protection equipment quantity concentration is used to measure the degree of concentration of protection equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula:

[0019]

[0020] The monitoring equipment quantity concentration is used to measure the degree of concentration of monitoring equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula:

[0021]

[0022] The concentration of measurement and control equipment is used to measure the degree of concentration of measurement and control equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes. It is calculated using the following formula:

[0023]

[0024] The switch quantity concentration is used to measure the degree of concentration of switches in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula:

[0025]

[0026] The total length compactness of the secondary cables is used to measure the degree of compactness of the total cable length used in the substation protection and monitoring system, and is calculated by the following formula:

[0027]

[0028] The total length compactness of the secondary optical cable is used to measure the degree of compactness of the total length of optical cables used in the substation protection and monitoring system, and is calculated by the following formula:

[0029]

[0030] Preferably, the network integration index system of the substation protection and monitoring system mentioned in step S2 includes the following parameters: average network load rate, average port traffic utilization rate, port utilization rate, and port access rate.

[0031] Preferably, the average network load rate is the ratio of the data traffic of the substation protection and monitoring system to the network bandwidth within 1 minute;

[0032] The average port traffic utilization rate represents the utilization of port traffic on network devices within the substation protection and monitoring system, and is calculated using the following formula:

[0033]

[0034] The port utilization rate represents the utilization of network device ports in the substation protection and monitoring system, and is calculated using the following formula:

[0035]

[0036] The port access rate, representing the network device ports of the substation protection and monitoring system, is calculated using the following formula:

[0037]

[0038] Preferably, the monitoring capability integration index system of the substation protection and monitoring system mentioned in step S3 includes the following parameters: number of monitoring functions, average number of functions of monitoring equipment, number of monitoring services, and average number of services of monitoring equipment.

[0039] Preferably, the number of monitoring functions is the number of functions that the monitoring equipment in the substation protection monitoring system can perform, obtained from data statistics.

[0040] The average number of functions of the monitoring equipment is the average number of functions that each monitoring equipment can perform.

[0041] The number of monitoring services refers to the number of objects that the monitoring equipment in the substation protection and monitoring system can monitor, obtained from data statistics.

[0042] The average number of services provided by the monitoring equipment refers to the average number of objects that each monitoring device can monitor.

[0043] Preferably, the land-use efficiency index system for the substation protection and monitoring system described in step S4 includes the following parameters: the land area of ​​the substation secondary equipment room, the efficiency of the number of secondary cabinets, and the land area ratio of the substation secondary equipment room.

[0044] Preferably, the floor area of ​​the substation secondary equipment room is the floor area of ​​the substation secondary equipment room obtained from the substation design scheme;

[0045] The concentration of secondary cabinets is used to measure the degree of concentration of secondary cabinets in the substation protection and monitoring system, facilitating comparisons between substations of different sizes. It is calculated using the following formula:

[0046]

[0047] The land area ratio of the secondary equipment room in the substation is the ratio of the land area of ​​the secondary equipment room in the substation to the land area of ​​all buildings in the substation.

[0048] Therefore, this invention adopts the above-mentioned method for establishing an integrated index system for substation protection and monitoring systems to evaluate the integrated performance of substation protection and monitoring systems using independently controllable chips and operating systems, establishes a comprehensive and suitable evaluation index system, provides a basis for building independently controllable substation protection and monitoring systems, thereby continuously improving system performance and achieving the goal of improving system architecture.

[0049] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0050] Figure 1 This is a flowchart of the present invention;

[0051] Figure 2 This is a comparison chart of the integration index scores of different substation protection and monitoring systems according to embodiments of the present invention. Detailed Implementation

[0052] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0053] Figure 1 This is a structural schematic diagram of one embodiment of the present invention, as shown below. Figure 1 As shown, the method for establishing an integrated indicator system for substation protection and monitoring systems includes the following steps:

[0054] S1. Establish an equipment integration indicator system for substation protection and monitoring systems;

[0055] Preferably, the equipment integration index system of the substation protection and monitoring system mentioned in step S1 includes the following parameters: total number of primary equipment, total number of secondary equipment, integration degree of secondary equipment quantity, integration degree of protection equipment quantity, integration degree of monitoring equipment quantity, integration degree of measurement and control equipment quantity, integration degree of switch quantity, integration degree of total length of secondary cables, and integration degree of total length of secondary optical cables.

[0056] It should be noted that "intensification" originally came from the economic field, meaning a form of improving work efficiency and effectiveness by making full use of all resources, through more centralized and rational application of management and technology, and by maximizing the effect of human resources. Specifically, in the context of substation protection and monitoring systems, "intensification" refers to the unified allocation of production factors such as manpower, materials, and management, while "intensification" refers to achieving cost reduction and high efficiency in the process of centralized and unified allocation of production factors, thereby reducing system costs and improving management efficiency. Equipment intensification refers to achieving system performance without change, or even with improvement, while minimizing the number of devices within the system. Therefore, nine indicators are mainly selected to measure the equipment intensification of the protection and monitoring system: total number of primary equipment, total number of secondary equipment, intensification degree of secondary equipment quantity, intensification degree of protection equipment quantity, intensification degree of monitoring equipment quantity, intensification degree of measurement and control equipment quantity, intensification degree of switch quantity, intensification degree of total length of secondary cables, and intensification degree of total length of secondary optical cables.

[0057] Preferably, the total number of primary equipment refers to the number of all primary equipment in the substation obtained from data statistics, used to measure the configuration and scale of the substation; the total number of secondary equipment refers to the number of all secondary equipment in the substation protection and monitoring system obtained from data statistics; the secondary equipment quantity concentration is used to measure the degree of concentration of secondary equipment in the substation protection and monitoring system, and is calculated by the following formula:

[0058]

[0059] The protection equipment quantity concentration is used to measure the degree of concentration of protection equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula:

[0060]

[0061] The monitoring equipment quantity concentration is used to measure the degree of concentration of monitoring equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula:

[0062]

[0063] The concentration of measurement and control equipment is used to measure the degree of concentration of measurement and control equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes. It is calculated using the following formula:

[0064]

[0065] The switch quantity concentration is used to measure the degree of concentration of switches in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula:

[0066]

[0067] The total length compactness of the secondary cables is used to measure the degree of compactness of the total cable length used in the substation protection and monitoring system, and is calculated by the following formula:

[0068]

[0069] The total length compactness of the secondary optical cable is used to measure the degree of compactness of the total length of optical cables used in the substation protection and monitoring system, and is calculated by the following formula:

[0070]

[0071] S2. Establish a network-integrated indicator system for substation protection and monitoring systems;

[0072] Preferably, the network integration index system of the substation protection and monitoring system mentioned in step S2 includes the following parameters: average network load rate, average port traffic utilization rate, port utilization rate, and port access rate. Preferably, the average network load rate is the ratio of the data traffic of the substation protection and monitoring system to the network bandwidth within 1 minute.

[0073] It should be noted that network integration in substation protection and monitoring systems refers to the integration of transmission services and data traffic within the system, as well as the integration of network ports used. Therefore, four indicators are mainly selected to measure the network integration of protection and monitoring systems: average network load rate, average port traffic utilization rate, port utilization rate, and port access rate.

[0074] The average port traffic utilization rate represents the utilization of port traffic on network devices within the substation protection and monitoring system, and is calculated using the following formula:

[0075]

[0076] The port utilization rate represents the utilization of network device ports in the substation protection and monitoring system, and is calculated using the following formula:

[0077]

[0078] The port access rate, representing the network device ports of the substation protection and monitoring system, is calculated using the following formula:

[0079]

[0080] S3. Establish a comprehensive indicator system for monitoring capabilities of substation protection and monitoring systems;

[0081] Preferably, the monitoring capability integration index system of the substation protection and monitoring system mentioned in step S3 includes the following parameters: number of monitoring functions, average number of functions of monitoring equipment, number of monitoring services, and average number of services of monitoring equipment.

[0082] It should be noted that the integration of monitoring capabilities in a substation protection and monitoring system is an indicator for measuring the degree of integration of the system's monitoring capabilities. Therefore, four indicators are mainly selected to measure the integration of monitoring capabilities in a substation protection and monitoring system: the number of monitoring functions, the average number of functions per monitoring device, the number of monitoring services, and the average number of services per monitoring device.

[0083] Preferably, the number of monitoring functions is the number of functions that the monitoring equipment in the substation protection and monitoring system can perform, obtained from data statistics; the average number of monitoring functions is the average number of functions that each monitoring device can perform; the number of monitoring services is the number of objects that the monitoring equipment in the substation protection and monitoring system can monitor, obtained from data statistics; and the average number of monitoring services is the average number of objects that each monitoring device can monitor.

[0084] S4. Establish a land-use efficiency index system for substation protection and monitoring systems;

[0085] Preferably, the land-use efficiency index system for the substation protection and monitoring system described in step S4 includes the following parameters: the land area of ​​the substation secondary equipment room, the efficiency of the number of secondary cabinets, and the land area ratio of the substation secondary equipment room.

[0086] It should be noted that the land-use efficiency of substation protection and monitoring systems refers to the intensive use of the area occupied by these systems. Since these systems are primarily installed in secondary equipment rooms within substations, their land-use efficiency is mainly measured by the area of ​​the substation's secondary equipment rooms. Therefore, three main indicators are selected to measure the land-use efficiency of the protection and monitoring systems: the floor area of ​​the substation's secondary equipment rooms, the intensive use of secondary control cabinets, and the ratio of the substation's secondary equipment rooms to its floor space.

[0087] Preferably, the floor area of ​​the substation secondary equipment room is the floor area of ​​the substation secondary equipment room obtained from the substation design scheme;

[0088] The concentration of secondary cabinets is used to measure the degree of concentration of secondary cabinets in the substation protection and monitoring system, facilitating comparisons between substations of different sizes. It is calculated using the following formula:

[0089]

[0090] The land area ratio of the secondary equipment room in the substation is the ratio of the land area of ​​the secondary equipment room in the substation to the land area of ​​all buildings in the substation.

[0091] S5. Combine the above-mentioned equipment integration index system, network integration index system, monitoring capability integration index system, and land use integration index system of the substation protection and monitoring system;

[0092] S6. Select some indicators from the integrated indicator system of substation protection and monitoring system, combine data from different substations, calculate the indicator weights using the entropy method, and then conduct case analysis to calculate the overall evaluation results of the corresponding substation indicators, so as to verify the practical value of the integrated indicators of the substation protection and monitoring system.

[0093] In this embodiment, the above indicators are divided into three levels.

[0094] Table 1 shows the integrated indicator system for substation protection and monitoring systems.

[0095]

[0096]

[0097] Table 2 shows the index selection table for the implementation examples.

[0098]

[0099] Table 3 is the original statistical data table of the third-level indicators in Table 2.

[0100]

[0101] Table 4 is a standardized numerical table of Table 3 after standardization and dimensionless quantity processing.

[0102]

[0103] Table 5 shows the weights of each indicator calculated using the entropy method.

[0104]

[0105] Table 6 shows the overall integrated score table for the protection and monitoring systems of each substation, obtained by substituting the index weights obtained from Table 5 into the normalized data in Table 4.

[0106] Substation name Substation 1 Substation 2 Substation 3 Substation 4 Overall score of intensive development 0.914128 0.952896 0.918883 0.835926

[0107] Figure 2 This is a comparison chart of the integration index scores of different substation protection and monitoring systems according to embodiments of the present invention, as shown in Table 6 and... Figure 2 It can be seen that, using the selected integration indicators to score different substations, substation 2 is the best overall, while substation 4 is the worst relatively overall. Therefore, it can be concluded that the integration indicator system for substation protection and monitoring systems can evaluate different substations to a certain extent, thereby revealing the differences in integration among different substations.

[0108] Therefore, this invention adopts the above-mentioned method for establishing an integrated index system for substation protection and monitoring systems to evaluate the integrated performance of substation protection and monitoring systems using independently controllable chips and operating systems, establishes a comprehensive and suitable evaluation index system, provides a basis for building independently controllable substation protection and monitoring systems, thereby continuously improving system performance and achieving the goal of improving system architecture.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for establishing an integrated index system for a substation protection and monitoring system, characterized in that: Includes the following steps: S1. Establish an equipment integration indicator system for substation protection and monitoring systems; The equipment integration index system of the substation protection and monitoring system mentioned in step S1 includes the following parameters: total number of primary equipment, total number of secondary equipment, integration degree of secondary equipment, integration degree of protection equipment, integration degree of monitoring equipment, integration degree of measurement and control equipment, integration degree of switch, integration degree of total length of secondary cables, and integration degree of total length of secondary optical cables. The total number of primary equipment refers to the number of all primary equipment in the substation obtained from data statistics, which is used to measure the configuration and scale of the substation. The total number of secondary devices refers to the total number of all secondary devices in the substation protection and monitoring system obtained from data statistics. The secondary equipment quantity concentration ratio is used to measure the degree of concentration of secondary equipment in the substation protection and monitoring system, and is calculated by the following formula: The protection equipment quantity concentration is used to measure the degree of concentration of protection equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula: The monitoring equipment quantity concentration is used to measure the degree of concentration of monitoring equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula: The concentration of measurement and control equipment is used to measure the degree of concentration of measurement and control equipment in the substation protection and monitoring system, facilitating comparisons between substations of different sizes. It is calculated using the following formula: The switch quantity concentration is used to measure the degree of concentration of switches in the substation protection and monitoring system, facilitating comparisons between substations of different sizes, and is calculated by the following formula: The total length compactness of the secondary cables is used to measure the degree of compactness of the total cable length used in the substation protection and monitoring system, and is calculated by the following formula: The total length compactness of the secondary optical cable is used to measure the degree of compactness of the total length of optical cables used in the substation protection and monitoring system, and is calculated by the following formula: S2. Establish a network-integrated indicator system for substation protection and monitoring systems; The network integration index system of the substation protection and monitoring system mentioned in step S2 includes the following parameters: average network load rate, average port traffic utilization rate, port utilization rate, and port access rate. The average network load rate is the ratio of the data traffic of the substation protection and monitoring system to the network bandwidth within 1 minute. The average port traffic utilization rate represents the utilization of port traffic on network devices within the substation protection and monitoring system, and is calculated using the following formula: The port utilization rate represents the utilization of network device ports in the substation protection and monitoring system, and is calculated using the following formula: The port access rate, representing the network device ports of the substation protection and monitoring system, is calculated using the following formula: S3. Establish a comprehensive indicator system for monitoring capabilities of substation protection and monitoring systems; The integrated monitoring capability index system of the substation protection and monitoring system mentioned in step S3 includes the following parameters: number of monitoring functions, average number of functions of monitoring equipment, number of monitoring services, and average number of services of monitoring equipment; The number of monitoring functions refers to the number of functions that the monitoring equipment in the substation protection and monitoring system can perform, obtained from data statistics. The average number of functions of the monitoring equipment is the average number of functions that each monitoring equipment can perform. The number of monitoring services refers to the number of objects that the monitoring equipment in the substation protection and monitoring system can monitor, obtained from data statistics. The average number of services provided by the monitoring equipment is the average number of objects that each monitoring equipment can monitor. S4. Establish a land-use efficiency index system for substation protection and monitoring systems; The land-use efficiency index system for the substation protection and monitoring system mentioned in step S4 includes the following parameters: land area of ​​the substation secondary equipment room, the efficiency of the number of secondary cabinets, and the land area ratio of the substation secondary equipment room. The floor area of ​​the substation secondary equipment room is the floor area used by the substation secondary equipment room obtained from the substation design scheme. The concentration of secondary cabinets is used to measure the degree of concentration of secondary cabinets in the substation protection and monitoring system, facilitating comparisons between substations of different sizes. It is calculated using the following formula: The land area ratio of the substation secondary equipment room is the ratio of the land area of ​​the substation secondary equipment room to the land area of ​​all buildings in the substation. S5. Combine the above-mentioned equipment integration index system, network integration index system, monitoring capability integration index system, and land use integration index system of the substation protection and monitoring system; S6. Select some indicators from the integrated indicator system of substation protection and monitoring system, combine data from different substations, calculate the indicator weights using the entropy method, and then conduct case analysis to calculate the overall evaluation results of the corresponding substation indicators, so as to verify the practical value of the integrated indicators of the substation protection and monitoring system.

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