Method based on liquid level descending of head water tank of convertor station valve cooling system for judging internal cooling water leaking

A technology of valve cooling and high-level water tanks in converter stations, applied in the field of electric power, can solve problems such as inaccurate judgment of liquid levels

Inactive Publication Date: 2016-02-17
QUJING BUREAU OF SUPERVOLTAGE POWER TRANSMISSION CHINA SOUTHERN POWER GRID
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and propose a method for judging internal cooling water leakage based

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  • Method based on liquid level descending of head water tank of convertor station valve cooling system for judging internal cooling water leaking
  • Method based on liquid level descending of head water tank of convertor station valve cooling system for judging internal cooling water leaking
  • Method based on liquid level descending of head water tank of convertor station valve cooling system for judging internal cooling water leaking

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[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings and embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0029] see figure 1 and figure 2 , which is a step diagram and an operation flow chart of the method of the present invention. A method for judging internal cooling water leakage based on the liquid level drop of the high-level water tank of the valve cooling system of the converter station of the present invention includes the following steps:

[0030] Step S10, obtaining the water inlet volume change and outlet water volume change of the inlet and outlet inner cooling water pipes of the valve cooling system relative to the valve hall;

[0031] Step S20, converting the average value of the sum of the water inlet volume change and the outlet water volume change in step S10 into the liquid lev...

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Abstract

The invention discloses a method based on liquid level descending of a head water tank of a convertor station valve cooling system for judging internal cooling water leaking. The method comprises the following steps: S10, acquiring inflow volume variable quantity and effluent variable quantity relative to a valve hall, of an inlet and outlet cold water pipe of a valve cooling system; S20, converting the average value of the sum of the inflow volume variable quantity and effluent variable quantity in the S10 into a liquid level variable quantity corresponding to the bottom area of the head water tank; and S30, judging liquid level variable quantity, if the liquid level variable quantity exceeds the set value, sending out an alarm signal, or resetting an alarm signal, entering S10. The method disclosed by the invention can solve the problem that the liquid level is not accurate because the head water tank is relatedly influenced by temperature and pressure and other factors.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for judging internal cooling water leakage based on the liquid level drop of a high-level water tank in a valve cooling system of a converter station. Background technique [0002] The valve cooling system is one of the most important auxiliary systems in the DC transmission system. Its main function is to cool the heat generated by the converter valve slice and its accessories during operation, so as to ensure that the converter valve equipment operates within a controllable temperature range. . Valve cooling system can be divided into internal cooling water circulation system and external cooling water circulation system. The internal cooling water circulation system is mainly composed of an internal cooling main engine, an internal cooling auxiliary engine and a high-level water tank. The internal cooling main engine includes a main circulation pump, a main f...

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Application Information

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IPC IPC(8): G01M3/32
Inventor 李本毓蒙祖添邹文龙王电处张锐廖和福陈亮徐学海凌泽强
Owner QUJING BUREAU OF SUPERVOLTAGE POWER TRANSMISSION CHINA SOUTHERN POWER GRID
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