Flexible direct current transmission converter valve submodule field test method and system

A flexible direct current transmission and field test technology, applied in the field of converter valve test, can solve problems such as low efficiency and inability to realize automatic batch testing, and achieve the effect of reducing cost, improving test efficiency and saving test time.

Pending Publication Date: 2022-03-01
ZHOUSHAN ELECTRIC POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unable to realize automatic batch testing, low efficiency

Method used

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  • Flexible direct current transmission converter valve submodule field test method and system

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Embodiment Construction

[0023] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like figure 1 As shown, a flexible direct current transmission converter valve sub-module field test system includes a tester 4 and a connection device 2 connected to the tester 4; the connection device 2 is provided with a plurality of switch modules 3 connected in series, and the switch module 3 has connecting wires, which are connected to the positive and negative terminals of the sub-module 1 so that a switch module 3 and a sub-module 1 are connected in parallel; the tester 4 controls the on-off of each switch module 3 .

[0025] The tester 4 can control the switch modules 3 one-to-one, or the tester 4 can control the switch modules 3 through the field bus.

[0026] According to needs, the tester 4 is connected to the connection device 2 by wire or wirelessly.

[0027] In order to take into account the cost and the relia...

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Abstract

The invention discloses a field test method and system for a flexible direct current transmission converter valve sub-module, and relates to the field of converter valve tests. The conventional test method can only test a single sub-module and is low in efficiency. According to the invention, each sub-module port is configured with a switch module in parallel. The tester remotely controls to turn off the first sub-module parallel switch module and turn on the other sub-module parallel switch modules, so that the first sub-module is connected in series into a test loop and other sub-module bypasses, finally, the tester is controlled to apply a test power supply to the tested sub-module, function test is started to be performed on the tested sub-module, and after the first sub-module test is completed, the test is completed. And switching off the parallel switch of the second sub-module, switching on the parallel switches of the other sub-modules, repeating the steps, and circulating in sequence to complete the function test of all the sub-modules. According to the technical scheme, the testing efficiency is greatly improved, the requirement for a tester power supply is reduced, low-voltage detection can be achieved, the cost is effectively reduced, meanwhile, the detection safety is improved, and high-voltage danger is avoided.

Description

technical field [0001] The invention relates to the field of converter valve testing, in particular to a field testing method and system for a sub-module of a flexible direct current transmission converter valve. Background technique [0002] Modular multilevel flexible direct current transmission (MMC-HVDC) is a new generation of direct current transmission technology, and flexible direct current transmission is a direct current transmission based on a voltage source. The voltage polarity of the direct current line is unchanged, so it is very easy to form a multi-terminal direct current Power transmission, which can directly supply power to small isolated loads over long distances, especially passive systems. The number of sub-modules of the flexible HVDC converter valve is huge, and the previous test method can only test a single sub-module, and the test connection needs to be replaced manually after the test. Automatic batch testing cannot be realized, and the efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 刘黎王勇桑清城詹志雄段天元戴杰杨勇韩幸军李剑波傅乐伟张吼周晓炜罗佳瑶俎立峰吉攀攀慕小乐蔡雄
Owner ZHOUSHAN ELECTRIC POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
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