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Noise immunity measuring method for protecting secondary equipment in cabinet

A technology of secondary equipment and measurement methods, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of secondary circuit influence, transmission line tripping, large capacity, etc., and achieves control of project cost and reasonable project cost. Effect

Inactive Publication Date: 2009-07-08
STATE GRID ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high voltage and large capacity of the primary system, the electromagnetic disturbance phenomenon may be very serious, and it is more likely to have a stronger impact on the secondary circuit, so that the transmission line trips and the power supply is interrupted.

Method used

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  • Noise immunity measuring method for protecting secondary equipment in cabinet
  • Noise immunity measuring method for protecting secondary equipment in cabinet
  • Noise immunity measuring method for protecting secondary equipment in cabinet

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples, but the following examples should not be construed as limiting the present invention.

[0032] According to the standard of general measurement method, the specific method of secondary equipment immunity measurement is:

[0033] The first step: Immunity test conditions:

[0034] 1. Select the test under the operating mode where the secondary equipment under test can work normally and is most sensitive to electromagnetic disturbance. In the arrangement of the position of the test object, it is necessary to consider how to obtain the maximum sensitivity, and also to conform to the actual conditions of the typical installation and operation of the equipment under test.

[0035] 2. If it is not possible to test every function of the equipment, the most important operation mode should be selected. If the equipment is part of a system, or may be connec...

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Abstract

The invention relates to a noise immunity determination method for secondary equipment inside a small protection room, which comprises a determination range, determination level and requirement, a determination criterion, and a measurement method, wherein the determination level and requirement have decisive effect on a determination result, and are test classes and test values of various test items. The method is a safe, reliable, simple and practical evaluation method; and the noise immunity performance of the secondary equipment is correctly standardized through the method, which is an important evidence for reducing engineering cost.

Description

technical field [0001] The invention belongs to the field of electromagnetic compatibility of high-voltage power transmission and transformation engineering, and specifically provides a method for measuring immunity to secondary equipment installed inside a protection chamber. Background technique [0002] With the rapid development of my country's economy and society, the demand for energy continues to grow, especially the demand for electricity shows a trend of rapid growth. However, due to the serious lag in the construction of the power grid, the existing power grid structure is difficult to meet this demand, and the contradiction between the uncoordinated development of the power grid and the power supply is very prominent. Therefore, it is required to ensure the power consumption of the existing power grid while accelerating the construction of the UHV power grid. Guaranteeing a stable and sufficient power supply is an important factor affecting the development of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 邬雄张广洲万保权张小武张泽平王勤蒋虹倪园
Owner STATE GRID ELECTRIC POWER RES INST
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