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Circuit breaker arc extinguish chamber model for AC/DC withstand voltage test

A technology of withstand voltage test and arc extinguishing chamber, which is applied in the direction of circuit breaker test, instrument, and test dielectric strength, etc., which can solve the problem of inability to effectively carry out AC and DC withstand voltage test research, difficulty in meeting UHV test conditions, and test cost Advanced problems, to achieve the effect of simple structure, convenient connection, and improved test efficiency

Pending Publication Date: 2021-04-09
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a circuit breaker arc extinguishing chamber model for AC and DC withstand voltage tests, to solve the problem that the prior art cannot satisfy the UHV test conditions and require trial production of large-capacity test equipment, resulting in high test costs. Technical Issues of Effectively Conducting AC and DC Voltage Withstand Test Research

Method used

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  • Circuit breaker arc extinguish chamber model for AC/DC withstand voltage test

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Experimental program
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Effect test

specific Embodiment 1

[0039] Such as figure 1 As shown, the circuit breaker arc extinguishing chamber model in this embodiment is a scale model, that is, the model made by reducing the AC and DC conventional arc extinguishing chamber according to a certain ratio, which includes the insulating sleeve 3 and the front end cover 13 extending along the front and rear directions , the rear end cover, the two ends of the cover are correspondingly fixed at both ends of the insulating sleeve 3, the insulating sleeve 3 is used to simulate the arc extinguishing chamber shell, and the insulating shed is arranged outside the insulating sleeve 3, and the insulating shed is arranged along the front and rear directions , located between the two end covers, the two end covers fixed at both ends of the insulating bushing 3 are hermetically assembled with the insulating bushing 3, and are used to simulate the two ends of the arc extinguishing chamber.

[0040]The front end cover 13 is sealed with a front conductive r...

specific Embodiment 2

[0052] The difference between it and Embodiment 1 mainly lies in that in Embodiment 1, the front conductive rod is an inflatable conductive rod with an inflatable gas circuit on it, and the rear conductive rod is an adjustable conductive rod with adjustable front and rear positions. In this embodiment, the rear conductive rod is an inflatable conductive rod, and the front conductive rod is an adjustable conductive rod.

[0053] In fact, due to the pressure fracture simulated by this model test, whether it is used to simulate the front conductive rod of the static end assembly or the rear conductive rod used to simulate the dynamic end assembly, it can be designed as an adjustable conductive rod. It is mainly used to adjust the distance between pressure-resistant fractures, and has nothing to do with the moving opening and closing operations in the arc extinguishing chamber.

[0054] Of course, it is also possible to integrate the adjustable conductive rod and the inflatable co...

specific Embodiment 3

[0056] The main difference between it and Embodiment 1 is that in Embodiment 1, the adjustment plate is fixed at the rear end of the rear conductive rod, and the front and rear position adjustment is realized through the cooperation of the adjustment plate and the adjustment bolt. In this embodiment, the rear conductive rod can be integrally provided with an adjusting flange, and the adjusting flange is provided with a bolt hole, and the adjusting bolt can be set through the bolt hole. Of course, considering the influence of the electric field, the adjusting flange can be adjusted Provide an insulating structure.

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Abstract

The invention relates to a circuit breaker arc extinguishing chamber model for an AC / DC withstand voltage test. The model is a scale model and comprises an insulating sleeve, a front end cover, a rear end cover, a front conducting rod and a rear conducting rod. The front conducting rod is provided with a static rod section; the rear end of the static rod section is of a cylinder structure; a central convex column is arranged in the center of the cylinder structure and is spaced from the cylinder structure; and the static rod section is used for simulating an arc-extinguishing chamber static end assembly. The rear conducting rod is provided with a movable rod section; a nozzle is fixedly arranged at the front end of the movable rod section; the movable rod section is used for simulating an arc extinguishing chamber movable end assembly; the rear end of the static rod section and the front end of the nozzle are arranged at intervals, so that a fracture formed by the arc extinguishing chamber static end assembly and the arc extinguishing chamber movable end assembly can be simulated; at least one of the two conducting rods is an adjustable conducting rod, and at least one of the two conducting rods is provided with an inflation gas path. Due to the adoption of the scale model, the overall size is small, the loading voltage level of a formed equivalent electric field is low, a test can be conveniently carried out in a laboratory, and test cost can be effectively reduced.

Description

technical field [0001] The invention relates to a circuit breaker arc extinguishing chamber model used for AC and DC withstand voltage tests. Background technique [0002] Flexible DC transmission is a new generation of DC transmission technology with the voltage source converter as the core. It uses more advanced voltage source converters and full-control devices. It is an upgrade of conventional DC transmission technology. Compared with AC transmission and Conventional DC transmission, while transmitting energy, can also flexibly adjust the voltage of the AC system connected to it, which has significant advantages such as good controllability, flexible operation mode, and many applicable occasions. [0003] With the rapid development of the flexible DC power grid, the demand for special equipment for AC and DC power transmission is becoming more and more urgent. The circuit breakers used in the connection area between the converter and the valve hall need to have AC and DC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/327
CPCG01R31/1227G01R31/327
Inventor 王鹏超魏建巍孙珂珂邹盛李智勇宗炫君程丽华杨珂韩峰朱秋楠王文博张良杰
Owner PINGGAO GRP