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High voltage DC transmission converter valve performance test synthesizing method

A high-voltage direct current transmission and operation test technology, which is applied in power supply testing, measurement of electricity, and measurement of electrical variables, etc., can solve the problem of large current source capacity, and achieve the effect of reducing the cost of test equipment

Active Publication Date: 2009-06-10
XIAN HIGH VOLTAGE APP RES INST CO LTD
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Problems solved by technology

In general, the current source is used to start first, and then the voltage source is used for synthesis. This synthesis method requires a large current source capacity.

Method used

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  • High voltage DC transmission converter valve performance test synthesizing method
  • High voltage DC transmission converter valve performance test synthesizing method
  • High voltage DC transmission converter valve performance test synthesizing method

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0012] refer to figure 1 , in the operation test of the high-voltage direct current transmission converter valve, the current source adopts a 12-pulse rectifier bridge with zero power operation, and the voltage of each bridge arm of the traditional current source is about 4000V. The reason is that the bridge arm of the test product is connected in series with an isolation valve Va1 (consisting of 10 thyristors connected in series) and the test product converter valve (consisting of 6 thyristors connected in series), and each thyristor corresponds to a high potential plate for energy harvesting, the energy harvesting voltage is about 200-250V, only when After the corresponding high-potential plate of each thyristor has stored energy, it can only be turned on under the action of the trigger pulse and the forward voltage. The voltage of each bri...

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Abstract

The present invention relates to an electrical test field of high voltage direct current transmission converter valve, and especially relates to a synthesizing method of operation test of high voltage direct current transmission converter valve. The method comprises the following steps: firstly starting the operation of a voltage source, extracting energy by each high-level board on a sampled converter valve and the auxiliary valve of current source, and then activating the current source for synthesizing the operation test. Preferably the current source is activated when the voltage source operates for 3-5 industrial frequency periods.

Description

technical field [0001] The invention relates to the electrical test field of a high-voltage direct current transmission converter valve, in particular to a synthesis method for an operation test of a high-voltage direct current transmission converter valve. Background technique [0002] With the development of high-voltage direct current transmission projects in the power system, the converter valve connected in series with high-power thyristor devices is the core of the converter station of the direct current transmission project. Its cost generally accounts for about 25% of the total project investment, and its quality directly affects power transmission and transformation. System reliability. [0003] The converter valve operation test is used to assess the operating performance of the converter valve under harsh working conditions. Its basic equipment is equivalent to a converter station, and its technical requirements are special and the technical implementation is comp...

Claims

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Application Information

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IPC IPC(8): G01R31/26G01R31/40
CPCG01R31/3336
Inventor 郑军周会高许钒张万荣胡治龙黄超贾一凡王安刘朴孙伟任军辉那虎李宾宾尚金诚
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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