A circuit breaker phase control suppression method for transmission line operating overvoltage
A technology for operating overvoltage and transmission lines, applied in the direction of emergency protection circuit devices, circuit devices, emergency protection circuit devices, etc. for limiting overcurrent/overvoltage, which can solve the impact of circuit breaker reliability, shorten service life, temperature Increase and other problems, to achieve the effect of reducing line construction costs, suppressing operating overvoltage, and reducing the use of equipment
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[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0026] figure 1 It is a schematic diagram of the circuit breaker in the present invention under different closing phases, the curve diagram of the first positive breakdown. When the circuit breaker closes the no-load line, the voltage of the system where the circuit breaker is located is initially The phase angle is usually random and uncertain, so that the breakdown point voltage of the circuit breaker is also randomly distributed, and there is a maximum breakdown point and a theoretical minimum breakdown point. When the circuit breaker breaks through at the minimum breakdown point, the power frequency voltage curve just escapes the negative maximum breakdown point, so the minimum breakdown po...
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