Circuit breaker electrical life monitoring system and method
A monitoring system and circuit breaker technology, which is applied to the monitoring system and monitoring field of the fault-free working state of the circuit, can solve the problem that the service life of the circuit breaker cannot be effectively monitored, and achieve the goal of promoting intelligence, improving safety, and increasing reliability. Effect
Active Publication Date: 2017-01-25
北京合锐清合电气有限公司 +1
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Problems solved by technology
[0006] The purpose of the present invention is to provide a circuit breaker electrical life monitoring system and method to solve the technical problem that the service life of the circuit breaker cannot be effectively monitored
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Embodiment Construction
[0043] The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:
[0044] figure 1 Shown is a schematic structural diagram of the circuit breaker body of the embodiment of the present invention.
[0045] The circuit breaker body includes the incoming line bushing 1, zero sequence current transformer 4, moving contact 7, static contact 6, vacuum interrupter 5, phase sequence current transformer 3, and outgoing line bushing connected in sequence from left to right 2. It also includes a voltage transformer 9 arranged between the moving contact 7 and the static contact 6. The circuit breaker body is filled with SF6 gas.
[0046] The incoming line bushing 1 and the outgoing line bushing 2 are respectively connected to the power supply side and the load side of the circuit breaker body, and the phase sequence current transformer 3 and the zero sequence current transformer 4 are respectively arranged on the outgoing line...
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The invention discloses a breaker electrical endurance monitoring system and method. The breaker electrical endurance monitoring system comprises a breaker and a power distribution terminal. The breaker comprises an incoming and outgoing line sleeve, a phase-sequence current transformer, a zero-sequence current transformer, a vacuum arc-extinguishing chamber, a fixed contact, a moving contact, a voltage transformer and a disconnecting switch. The breaker is in reliable connection with the power distribution terminal through an aviation plug and a cable, a super distance sensor is arranged in a breaker body and located between the fixed contact and the moving contact. A control chip is arranged in the power distribution terminal and is connected with the phase-sequence current transformer, the zero-sequence current transformer, the super distance sensor and the voltage transformer in the breaker body, and the chip is connected with an alarming module. A sensor in the breaker transmits corresponding data to the power distribution terminal in real time, the power distribution terminal computes the remaining electrical endurance of the breaker through the chip, and an alarming device is started when the remaining electrical endurance is zero.
Description
technical field [0001] The invention relates to a circuit monitoring system and a monitoring method, in particular to a monitoring system and a monitoring method for a fault-free working state of a circuit. Background technique [0002] Circuit breakers are widely used in the ring network cabinet of the cable network and on the pole switch of the overhead network. The function of fast judgment, location, isolation and restoration of power supply of fault lines has been widely used in power transmission and distribution of power systems. However, the service life of the circuit breaker is easily reached due to various reasons such as load impact, too many times of breaking high current, or running under high current conditions for a long time, which makes the static and dynamic contacts in the circuit breaker heat and deform. , wear and oxidation, etc. If the switchgear is not repaired or replaced in time, the static and moving contacts in the switch will lose the function o...
Claims
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IPC IPC(8): G01R31/327
Inventor 杨敦高刘玉刚孙延栋曹西征王嘉雨徐克政李振林马建生林骞曹华明孙广涛
Owner 北京合锐清合电气有限公司