DC interference test control system

A DC interference and test line technology, applied in the field of DC interference testing, can solve the problems of major grid accidents, failure to establish a simulated environment, substation or power plant shutdown accidents, etc., achieving huge economic and social benefits, and improving the ability to resist DC interference. , to ensure the effect of safe operation
CN102208806BInactive Publication Date: 2013-06-19NORTH CHINA GRID +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTH CHINA GRID
Publication Date
2013-06-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The embodiment of the invention provides a DC interference test control system. The system comprises a DC interference simulation device and an upper control device, wherein the DC interference simulation device comprises a control panel and a realization circuit, and the control panel comprises an upper machine communication unit and a component driving unit; and the upper control device comprises a lower machine communication unit, a quick contact adjusting unit, a simulation resistance adjusting unit, an equivalent capacity adjusting unit and a grounding resistance adjusting unit. The upper control device sends a generated control instruction to the control panel of the DC interference simulation device, and the control panel controls components in the realization circuit of the DC interference simulation device according to the control instruction. The DC interference test control system is used for carrying out relay protection DC interference test detection, and the DC groundingresistance and the AC entering resistance of tested secondary equipment are increased.
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Description

technical field

[0001] The invention relates to the DC interference testing technology of the electric power system, in particular to the relay protection DC interference test detection technology, specifically a DC interference testing control system. Background technique

[0002] The accidents caused by the relay protection profession in recent years show that the most likely cause of major accidents in the power grid is the problem of the secondary circuit of the relay protection, especially the problem of the DC system of the relay protection. If the interference on the DC secondary circuit is light, it will cause incorrect action due to the relay protection device getting wrong information; if the interference on the DC secondary circuit is heavy, it will cause multiple switches to trip without fault at the same time, resulting in substation failure. Or the power plant is completely shut down, and then causes a major accident in the power grid.

[0003] In the existing...

Claims

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