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Power system safety determination method

A power system and judgment method technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as network failures, achieve wide adaptability, intuitively measure system security, and good calculability

Inactive Publication Date: 2017-01-25
CHINA ELECTRIC POWER RES INST +3
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  • Abstract
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  • Claims
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Problems solved by technology

If these arcs fail, all directed paths from the start point to the end point of the network will fail

Method used

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  • Power system safety determination method
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Examples

Experimental program
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Embodiment

[0078] use figure 2 The middle and simple system is taken as an example. There are 5 nodes in the system. For the sake of simplicity, it is assumed that there are only lines in the system. The calculated reliability results further illustrate the implementation steps of this method. It is assumed that the failure rate of all single-circuit lines is 0.1 times per year. The recovery time is 0.005 hours / time.

[0079] 1. Number each point, from 1 to 5, and number each line, from X 1 to x 6 . Let 1 and 2 be the power point, and 5 be the load point.

[0080] Make a Network Incidence Matrix

[0081] C = 0 x 1 0 x 2 x 3 x 1...

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Abstract

The invention relates to a power system safety determination method, comprising: determining the type of each element included a power system and topological structure of the power system, and sorting reliability historical data; determining a minimum path set of the topological structure of the power system; determining a minimum cut set of the topological structure of the power system; determining, through the minimum cut set, a power system reliability index in connection with the reliability historical data; in connection with element reliability historical data, using calculated unavailability of elements with lowest reliability in the power system as a determination threshold, and comparing the power system reliability index with the determination threshold to determine whether power system safety is satisfactory or not; the technical scheme provided herein makes considerations for the influence of faults of various elements upon system safety, such as breakers, disconnectors, busbars, and circuitry, and the method is suitable for discovering weak links of a power system to improve safety and provide beneficial support for power grid planning decision.

Description

technical field [0001] The invention relates to a judging method in the field of power system simulation and calculation, and specifically designs a power system safety judging method. Background technique [0002] Power grid reliability analysis is the basis of risk assessment and can provide a basis for decision-making such as power system planning, maintenance, operation, and control. With the increasing scale and complexity of modern power systems, and the continuous improvement of users' requirements for power quality, especially the promulgation of the "Regulations on Emergency Response and Investigation and Handling of Power Safety Accidents" issued by the State Council of the People's Republic of China Order No. 599, the power system security The reliability puts forward higher requirements, and the reliability of the power system has attracted people's attention. [0003] The reliability evaluation method based on topology structure is a relatively common analysis ...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 张鑫宋云亭李媛媛吉平董晓晶周宗川吴威胡臻达林毅林章岁陈湘申旭辉唐晓骏郑超罗红梅李惠玲
Owner CHINA ELECTRIC POWER RES INST
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