Research on Selection of Circuit Breakers for High Voltage AC Power Systems
To address the limitations of traditional circuit breaker selection methods in detecting and cutting offfaulty lines in a 500 kV high-voltage AC power system,this article proposes a more efficient circuit breaker selection method.Firstly,before selecting a circuit breaker,a precise analysis of the external insulation parameters should be conducted,and based on these analysis results,reasonable values should be taken.Then,based on these parameters,a suitable circuit breaker release should be selected.Secondly,selective coordination design between upper and lower level circuit breakers should be carried out to ensure accurate and rapid disconnection of faulty lines in the event of a fault,effectively preventing accidents from occurring.Through this method,precise selection of circuit breakers in 500 kV high-voltage AC power systems can be achieved,improving the response speed of circuit breakers to faulty lines and enhancing the overall stability and safety of the power system.
ultra-high voltage ACpower systemcircuit breaker selection
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