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Power system fault monitoring method and system

A power system and fault monitoring technology, which is applied in the field of power systems, can solve the problems of difficulty in realizing power system fault online monitoring, low efficiency, low precision, etc., and achieve the effect of realizing power system fault online monitoring and calibration

Inactive Publication Date: 2014-04-30
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

The current practice is not only inefficient, but also has low precision, making it difficult to realize online monitoring of power system faults

Method used

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  • Power system fault monitoring method and system
  • Power system fault monitoring method and system

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Embodiment Construction

[0016] In order to further illustrate the technical means adopted by the present invention and the achieved effects, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0017] see figure 1 , is a schematic flowchart of the power system fault monitoring method of the present invention.

[0018] A power system fault monitoring method, comprising the following steps:

[0019] S101 generates a power flow network structure through power system modeling, and calculates operating parameters of the power system;

[0020] S102 simulating the operation of the power system according to the calculated operating parameters;

[0021] S103 According to the simulation result, monitor the failure of the microcomputer protection device in the power system.

[0022] Establish the protected object model according to the design data. As one of the embodiments, the established ...

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Abstract

The invention discloses a power system fault monitoring method. The power system fault monitoring method comprises the steps of generating a power flow network structure through an electric system, calculating the operating parameters of the electric system, simulating the electric system according to the calculated operating parameters, and monitoring the fault of a microcomputer protection device in the electric system according to the simulation result. In addition, the invention discloses a power system fault monitoring system. According to the power system fault monitoring method, the real-time power flow network structure is generated through modeling of the electric system, simulating monitoring physical quantity of the actual electric system is obtained through simulation model calculation, electric monitoring quantity is directly input into a comprehensive protection device to simulate the on-site running condition of the electric system, and therefore on-line monitoring and examining of the power system fault can be achieved efficiently and accurately.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a power system fault monitoring method and a power system fault monitoring system. Background technique [0002] Faults in the power system are inevitable. After a fault occurs, the current and voltage changes of the components in the power system are affected by many factors such as the fault type, fault location, network structure, and real-time power flow, and multiple faults may occur. Therefore, it is particularly important to accurately and effectively monitor power system faults, and the monitoring of microcomputer protection devices in power systems is even more critical. At present, most of the power system comprehensive protection devices adopt multi-CPU protection measurement and control devices combining software and hardware, which can integrate protection functions, measurement functions and control functions, and are equipped with network interfaces through w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 张曦朱亚清陈世和潘凤萍罗嘉伍宇忠叶向前万文军史玲玲庞志强
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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