A method for diagnosing the state of primary equipment using the communication state of secondary equipment in power systems

Abstract

A method for diagnosing states of primary equipment by means of communication states of secondary equipment in an electric system includes the steps that (S1) configuration data of a system network architecture are read from a monitoring system configuration file of the electric system; (S2) the communication state of a measuring and control device and a monitoring system is read from the system; (S3) whether the communication state of the measuring and control device is normal is detected; (S4) if the communication state is abnormal, the state of the primary equipment measured by the measuring and control device is marked as an unknown state according to the system network architecture; (S5) the second step to the fourth step is executed circularly until all measuring and control devices are examined; (S6) the communication state of a protection device and the monitoring system is read from the system; (S7) if the communication state is abnormal, the state of the primary equipment protected by the protection device is marked as a dangerous operation state according to the system network architecture; (S8) the sixth step and the seventh step are executed circularly until all protection devices are examined. According to the method, the possibility that key equipment is badly damaged when the primary equipment operates without protection can be lowered.

Description

technical field

[0001] The invention relates to a method for realizing the self-diagnosis of the state of the primary equipment by using the communication state of the secondary equipment in the monitoring of a power system substation. Background technique

[0002] In a modern society, the power system is an important infrastructure to ensure the normal operation of the national economy. Large-scale power outages in the power system will have a direct and significant impact on people's lives and the national economy. Substation monitoring system (substation data acquisition and monitoring SCADA) is an important part of the power system and an important means to analyze and monitor the power system. Especially with the continuous improvement of computer technology, communication technology and automation level, the importance of substation automation system to the safety, stability and economic operation of power system is becoming more and more obvious.

[0003] Primary equ...

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