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High-voltage circuit breaker and closing control method thereof

A high-voltage circuit breaker and control method technology, applied in circuits, protection switch operation/release mechanisms, air switch parts, etc., can solve the problems of easy burning of arc contacts in arc extinguishing chambers

Pending Publication Date: 2022-05-13
PINGGAO GRP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-voltage circuit breaker and its closing control method, which is used to solve the problem that the arc contacts of the arc extinguishing chamber are easily burned due to operating overvoltage when the high-voltage circuit breaker is closed

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  • High-voltage circuit breaker and closing control method thereof
  • High-voltage circuit breaker and closing control method thereof
  • High-voltage circuit breaker and closing control method thereof

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] The 550KV high-voltage circuit breaker in the prior art adopts a mechanical hydraulic mechanism or a spring mechanism, and the opening and closing action characteristic curve is single. When the parameters in the opening and closing circuit, such as current, voltage, power factor, etc., change, the opening and closing The action characteristics cannot be changed accordingly in time. Such as figure 1 Shown is a high-voltage circuit breaker that uses a hydraulic mechanism. The hydraulic mechanism 12 is installed in the mechanism box on the maintenance platform 11. A high-voltage circuit breaker control cabinet 10 is installed on the ground. The hydraulic mechanism 12 passes through the transmission structure in the pillar 13. It is connect...

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Abstract

The invention provides a high-voltage circuit breaker and a switching-on control method thereof, and belongs to the technical field of switching-on control of high-voltage circuit breakers. According to a traditional hydraulic spring operating mechanism circuit breaker, a switch is switched on at any angle of bus voltage in real time, and if a switching resistor is not connected in parallel, the danger of overvoltage exists when a high-voltage circuit breaker is switched on; for a high-voltage circuit breaker driven by a motor, when a closing command is received, the time delay of the random closing command is realized by capturing a random closing point and a next alternating-current voltage zero crossing point after an inherent closing time period and subtracting the inherent closing time from the two time periods. By adopting the invention, the phase selection closing of the motor-driven high-voltage circuit breaker can be realized, so that the design of burning loss of an arc contact of an arc extinguish chamber of the circuit breaker by a capacitive load is omitted on the structure of the circuit breaker, and the burning loss of the arc contact of the arc extinguish chamber is prevented.

Description

technical field [0001] The invention provides a high-voltage circuit breaker and a closing control method thereof, which belong to the technical field of high-voltage circuit breaker closing control, and in particular relate to a phase-selection closing method of a high-voltage circuit breaker. Background technique [0002] The intelligent technology of high-voltage products at home and abroad, through the comprehensive application of communication, computer and control technology, and the use of sensors and controllers to upgrade the technology of high-voltage switches, realizes the integration of innovation and state perception once and twice, through the transition from analog interface to full digital interface The upgrade has laid a certain technical guarantee for the intelligentization of products. The intelligent operation of the product is to determine the required breaking speed of the circuit breaker according to the status information (current, voltage, power fact...

Claims

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Application Information

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IPC IPC(8): H01H71/66H01H31/02H01H7/08
CPCH01H71/66H01H31/02H01H7/08
Inventor 钱凯谭盛武韩国辉刘宇郝留成何宝营何大伟许家源闫飞越雷琴井琼琼范乃元惠勇锋
Owner PINGGAO GRP
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