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Method and system for evaluating and analyzing relay protection

A technology of relay protection and analysis method, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as protection device malfunction and refusal to operate, electrical equipment safety and stable operation of the power system cannot be guaranteed, etc. To achieve the effect of ensuring safety

Inactive Publication Date: 2014-02-26
STATE GRID CORP OF CHINA +1
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  • Description
  • Claims
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Problems solved by technology

At present, in power transmission applications, there is no online action behavior evaluation and analysis scheme for relay protection devices, so that the safety of electrical equipment and the stable operation of the power system cannot be guaranteed, and incorrect actions and refusals of protective devices often occur. action

Method used

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  • Method and system for evaluating and analyzing relay protection
  • Method and system for evaluating and analyzing relay protection
  • Method and system for evaluating and analyzing relay protection

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0023] figure 1 The flow chart of the relay protection evaluation and analysis method provided by the embodiment of the present invention is shown, and only the parts related to the embodiment of the present invention are shown for convenience of description.

[0024] The relay protection evaluation and analysis method provided in this embodiment includes the following steps:

[0025] Step S1, according to the fixed value data provided by the fault recorder and the rel...

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Abstract

The invention belongs to the technical field of intelligent power grids, and provides a method and system for evaluating and analyzing relay protection. The method comprises the steps that the movement conditions of a protection device are analyzed according to definite value data provided by a fault recorder and the relay protection device, data information is acquired and managed, and an information database is constructed; the analysis models of the relay protection device are constructed, and comprise an operating reason analysis model and a correction analysis model; searches are carried out in the information database according to the current operating state of the relay protection device, the corresponding analysis models are found, and an evaluation result is calculated. The reason for a fault can be analyzed to the maximum extent according to the operating state of the relay protection device, the relay protection device is maintained by work personnel according to the reason, the safety of electrical equipment and the stable operation of an electric system are effectively guaranteed, and the maloperation, operation refusing and other incorrect operations of the protection device are avoided.

Description

technical field [0001] The invention belongs to the technical field of smart grids, and in particular relates to a relay protection evaluation and analysis method and system. Background technique [0002] At present, the construction of power grids in my country and even in the world has fully entered the era of smart grids. The three-step strategy of the State Grid Corporation of China has further strengthened the implementation of smart grids. The goal of the smart grid is to achieve a unified and strong power grid. As the first security of the power system, the status and role of relay protection have always been self-evident. Quick action, selectivity, reliability and sensitivity are the four basic requirements of relay protection, and selectivity is the key factor that runs through and coordinates with each other. Relay protection is inseparable from the setting of the fixed value from the scheme design to the product application. To a large extent, the calculation of...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/245
Inventor 姚斌凌艳杨辉冯超陈昌黎
Owner STATE GRID CORP OF CHINA
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