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Power system network risk assessment method and system

A risk assessment and power system technology, applied in the direction of instruments, data processing applications, resources, etc., can solve the problems of strong subjectivity, few factors to consider, inaccurate risk assessment results, etc., to reduce the workload of monitoring and maintenance, high scientific reliability and accuracy, and the effect of improving power supply reliability

Pending Publication Date: 2021-09-21
WENSHANG POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing power grid risk assessment methods consider few factors and often use manual calculations. There are problems such as inaccurate risk assessment results and strong subjectivity. The reliability of power supply greatly increases the workload of grid monitoring and maintenance

Method used

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  • Power system network risk assessment method and system
  • Power system network risk assessment method and system
  • Power system network risk assessment method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In one or more embodiments, a power system network risk assessment method is disclosed, referring to figure 1 , including the following steps:

[0049] (1) Extract the historical data of power system network operation, and make statistics on grid faults and risk factors.

[0050] Specifically, for power grid operation safety risk checks, the collection and analysis of equipment reliability data is the basis for project implementation. Among them, the failure rate of electrical equipment is an important index to characterize the reliability of the equipment operation. How to obtain the failure rate of the equipment is the key to the risk assessment of power grid operation. The statistics of power grid faults and risk factor items in the present invention are realized through static security analysis and dynamic security analysis: in terms of static security, system N-1 or N-K faults are comprehensively considered, and the voltage of each node in the power grid system ex...

Embodiment 2

[0090] In one or more embodiments, a power system network risk assessment system is disclosed, including:

[0091] A module for extracting historical data of power system network operation, statistics of grid faults and risk factors;

[0092] A module for obtaining weight values ​​between risk factor sub-items included in each risk factor item;

[0093] A module used to select the corresponding risk factor sub-items from the risk factor items and calculate the risk probability value according to the grid hazard factors that need to be evaluated;

[0094] A module for establishing a risk quantitative assessment model based on load loss, and obtaining the risk value of the power grid when corresponding hazard factors occur in the power grid;

[0095] A module used to determine the risk level and evaluation results of power grid operation according to the risk value of the power grid, give early warning based on the risk level and risk evaluation results, and take corresponding ...

Embodiment 3

[0098] In one or more embodiments, a terminal device is disclosed, including a server, the server includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the The program realizes the power system network risk assessment method in the first embodiment. For the sake of brevity, details are not repeated here.

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Abstract

The invention discloses a power system network risk assessment method, which comprises the following steps of: extracting historical data of power system network operation, and counting power grid faults and risk factor items; enabling each risk factor item to be composed of a plurality of risk factor subitems, and obtaining weight values among the risk factor subitems included in each risk factor item; selecting corresponding risk factor subitems from the risk factor items according to the power grid hazard factors needing to be evaluated, and calculating a risk probability value; establishing a risk quantitative evaluation model based on load loss, and obtaining a power grid risk value when the power grid has corresponding hazard factors; determining a power grid operation risk level grade and an evaluation result according to the power grid risk value, performing early warning according to the risk level grade and the risk evaluation result, and taking corresponding measures for the power grid. The power system network accident occurrence probability and the power grid loss load capacity are combined to form a new quantitative index, reasonable quantitative evaluation is carried out on the power system network risk, the quantitative index serves as an objective measurement basis for guiding actual power production, and high risk evaluation scientificity and accuracy are achieved.

Description

technical field [0001] The invention belongs to the technical field of power grid risk assessment, and in particular relates to a power system network risk assessment method and system. Background technique [0002] In recent years, my country's power grid has developed rapidly, and all walks of life in the society have higher and higher requirements for the safe and stable operation of the power grid. Once the power grid fails, the economic losses and social impact caused by it will become greater and greater. Therefore, the safe operation of the power system is an important guarantee for the healthy development of the social economy. The power system dispatching center needs to make full use of power generation equipment and adjustment methods to provide qualified power to users to ensure system safety and smooth operation of the power grid. [0003] For power grids, fault risk assessment is a qualitative and quantitative analysis of the relative probability of fault occur...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q10/0639G06Q50/06
Inventor 路鹏程王海燕林超陈胜喜郭宗耀韩桂莲郑磊王芳田笑池宁宁马勇邵维廷伊宪进宋黎明时庆宾赵琦郭亚丽胡芳郭宗云侯胜齐郑月玲张兴群邵辉
Owner WENSHANG POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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