Extra-high voltage silicon stack state monitoring device and control method

Abstract

The invention relates to the technical field of direct-current high-voltage generators, and provides an extra-high voltage silicon stack state monitoring device and a control method. One side of a moving contact of each silicon stack unit is provided with the state monitoring device. The state monitoring device comprises a silicon stack positive polarity signal monitoring unit and a silicon stack negative polarity signal monitoring unit, wherein the silicon stack positive polarity signal monitoring unit comprises a first monitoring hole, a first photoelectric switch transmitting end and a first photoelectric switch receiving end, the first photoelectric switch transmitting end and the first photoelectric switch receiving end are arranged on the two sides of the first monitoring hole, and when each silicon stack unit is positively connected, the first monitoring hole penetrates through a silicon stack unit moving contact and a silicon stack fixing plate, and the silicon stack negative polarity signal monitoring unit is arranged in the same way. According to the invention, the monitoring of each silicon stack is realized by ingeniously utilizing the moving characteristics of the moving contacts of the silicon stack units and cooperating with photoelectric switches, and the monitoring is not influenced by space and high-voltage environment.

Description

technical field [0001] The invention relates to the technical field of direct current high voltage generators, in particular to an ultra-high voltage silicon stack state monitoring device and a control method. Background technique [0002] The DC high-voltage generator is one of the important equipment for the research, monitoring and testing of UHV power transmission and transformation equipment, such as converter transformers and converter valves. The high-voltage generator has the requirement of output voltage of 2400kV and above, and it should also have the requirements of fast polarity switching. In addition, when the DC device is used for the monitoring of the UHV cable test, it often requires the equipment to run continuously with electricity for more than one year, which puts forward higher requirements for the reliability of the equipment. As the core component of the DC high-voltage generator, the high-voltage silicon stack is an important component kit. With the ...

AI Technical Summary

Problems solved by technology

Although the monitoring device is not affected by high voltage and can judge the polarity of each silicon stack, the implementation of the solution is extremely complicated, and more oil pipes are added. If the oil leaks, it will directly affect the reliability of the monitoring. characteristics, and at the same time cannot carry out long-term real-time monitoring

Since the monitoring signal needs to be connected in series through the oil circuit, the monitoring will affect the polarity switching time of the silicon stack, and it is impossible to monitor a single silicon stack, which has great limitations.

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