Flexible direct current converter valve submodule bypass switch batch detection method
A technology of bypass switch and flexible DC, which is applied in the field of batch detection of bypass switches of flexible DC converter valve sub-modules, and can solve the problems of time-consuming, manpower, and increased personal injury
Pending Publication Date: 2022-06-03
中国南方电网有限责任公司超高压输电公司柳州局
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Problems solved by technology
This test method consumes a lot of time and manpower. It takes more than 20 minutes to complete the test for a single sub-module bypass switch. For thousands of sub-modules, it is impossible to complete the test during a power outage, and it is impossible to effectively ensure that all sub-modules in the event of a fault The closing function of the module bypass switch is effective to reliably remove the faulty module, and frequent high-intensity high-altitude operations increase the risk of personal injury
Method used
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[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0024] The present invention provides such as Figure 1-2 Example shown:
[0025] A method for batch detection of a bypass switch of a sub-module of a flexible DC converter valve, comprising the following steps:
[0026] Step S1, the flexible DC converter valve is a voltage source type power...
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The invention discloses a batch detection method for by-pass switches of submodules of a flexible direct current converter valve. The batch detection method comprises steps S1 to S3; according to the characteristics of a voltage source type power device of a flexible direct current converter valve in a flexible direct current transmission project, under the condition that the residual voltage of a sub-module capacitor meets the working voltage of a control board card after direct current locking, batch closing test of bypass switches of all sub-modules is automatically carried out once; the protective closing function of the bypass switch of the detection submodule is intact; when each sub-module control board card detects that a sub-module capacitor voltage reaches a test voltage U2, a closing test is carried out on each sub-module bypass switch through a preset batch test command, and the closing condition of each sub-module bypass switch is returned to the background human-computer interface and is displayed through an indicating lamp, so that a tester can conveniently confirm the closing condition. And when the closing condition of the bypass switch is abnormal, testers are prompted in an alarm message mode for subsequent inspection.
Description
technical field [0001] The invention belongs to the technical field of closing function detection of a sub-module bypass switch of a flexible direct current transmission converter valve, and in particular relates to a batch detection method of a bypass switch of a flexible direct current converter valve sub-module. Background technique [0002] The existing method for detecting the opening and closing function of the bypass switch of the flexible-DC converter valve sub-module: after the flexible-DC converter valve is powered off, the sub-module tester is used to apply the working voltage to a single sub-module, and then the sub-module protection function is triggered by simulating the sub-module fault. The bypass switch is closed to perform the bypass switch closing function detection. [0003] There are thousands of flexible DC converter valve sub-modules in the existing ultra-high voltage flexible DC transmission project, and each sub-module is equipped with a bypass switc...
Claims
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Login to View More IPC IPC(8): G01R31/327
CPCG01R31/3275Y02E60/60
Inventor 陈明佳黄聪李晓霞黄一钊罗义晖石万里张鹏许高明郝志杰陈极升韦德重荣军卢雯兴吕习超宋阳丁赛王靓申狄秋林家成孙阔腾董杭天阮畅肖瑜堃秦先坤
Owner 中国南方电网有限责任公司超高压输电公司柳州局