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High voltage DC isolation switch performance detection device

A high-voltage direct current, switching performance technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as poor contact, damaged insulation surface, and threats to the safe transmission of DC transmission systems, and achieve simple operation and safety assurance Effect

Inactive Publication Date: 2016-04-06
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the embodiment of the present invention, a high-voltage DC isolating switch performance detection device is provided to solve the phenomenon of poor contact or damaged insulating surface of the high-voltage DC isolating switch in the prior art under the interaction of DC stress and oscillating current. , which in turn poses a greater threat to the safe transmission of DC transmission systems

Method used

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  • High voltage DC isolation switch performance detection device
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Embodiment 1

[0022] see figure 1 , which is a schematic circuit diagram of a high-voltage DC isolation switch performance detection device provided by an embodiment of the present invention. The performance detection device for a high-voltage DC isolation switch disclosed in this embodiment includes a power supply, a protection resistor R, a reactor L, a capacitor C, a high-voltage quick-acting switch K2, and a controller, wherein the power supply and the protection resistor R, the reactor L, and the capacitor C It is connected in series with the high-voltage DC isolating switch K1 to be tested, the high-voltage snap-action switch K2, the reactor L, and the capacitor C are connected in parallel with the high-voltage DC isolating switch K1 to be tested, and the controller is electrically connected with the power supply and the high-voltage snap-action switch K2 respectively for Control the opening and closing of the high-voltage snap-action switch K2. This power supply supplies DC high vol...

Embodiment 2

[0025] see figure 2 , is a schematic circuit diagram of another high-voltage direct current isolating switch performance detection device provided by an embodiment of the present invention. In the high-voltage DC isolating switch performance testing device disclosed in this embodiment, the power supply is formed by connecting a high-voltage AC power supply in series with a rectifier, wherein the rectifier is connected in series with a protective resistor R, a reactor L, a capacitor C, and a high-voltage DC isolating switch to be tested K1 , the controller is electrically connected to the high-voltage AC power supply. The power supply composed of a high-voltage AC power supply and a rectifier in series provides energy for the entire circuit by converting the high-voltage AC current output by the high-voltage AC power supply into a high-voltage DC through a rectifier circuit. The rest of the performance testing device for a high-voltage DC isolating switch disclosed in this em...

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PUM

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Abstract

The invention discloses a high voltage DC isolation switch performance detection device comprising a power supply, a protection resistor, an electric reactor, a capacitor, a high voltage quick action switch, and a controller. The power supply is serially connected with the protection resistor, the electric reactor, the capacitor, and a high voltage isolation switch to be detected. The high voltage quick action switch is parallely connected with the electric reactor, the capacitor, and the high voltage DC isolation switch to be detected. The controller is respectively electrically connected with the power supply and the high voltage quick action switch. The high voltage DC isolation switch performance detection device is advantageous in that based on the prior art, by using the electric reactor, the inductor, and the high voltage quick action switch, the circuit can be configured smartly to simulate the oscillation circuit cooperated with the actual capacitance and the actual inductance of the DC power transmission line, and then the performance of the high voltage DC isolation switch can be detected; the operation is simple, and the safety, the reliability, and the high-efficiency operation of the DC power transmission system can be guaranteed.

Description

technical field [0001] The invention relates to the field of electric equipment detection, in particular to a performance detection device for a high-voltage direct current isolating switch. Background technique [0002] In high-voltage power transmission and transformation technology, DC transmission is suitable for long-distance and large-capacity power transmission and asynchronous interconnection of regional power grids due to its characteristics of long transmission distance, large transmission capacity, small line loss, and easy control and adjustment. application. As an important equipment of the DC transmission system, the performance of the high-voltage DC disconnector plays a very important role in the safe and reliable operation of the DC system. [0003] In the prior art, the high-voltage DC isolating switch is generally installed outdoors. When a specific device in the DC transmission system fails, an oscillating current will be generated in the system. At this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/3272G01R31/3274
Inventor 杨明昆程志万谭向宇王科
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST