Vacuum Circuit Breaker Module Power System Electromagnetic Compatibility And Reliability Design

In today's rapid economic development, the stability of the power system affects economic construction, In order to better and faster development of China's economy, providing a secure, safe operation of electric power system is very important. Vacuum circuit breaker is to ensure the reliable of the power system, the power system of circuit breaker directly determines its own reliability.This paper firstly introduces the development of vacuum circuit breaker, a power supply system for circuit breaker. In the interpretation of the electromagnetic compatibility based on the concept, and illustrate the power system electromagnetic compatibility and reliability design of significance. then proceed to the electrical power system overall design, according to the power system total structure, battery charging circuit, switch power converter circuit part is detailed analysis, elaborated the working principle of every part, thus put forward the various parts of the design train of thought.In order to improve the reliability of power system, power system for the charging circuit and a voltage change circuit established reliability model, and through the reliability allocation method, calculating the mean time between failures (MTBF).The power system over voltage protection circuit, filter circuit, inhibition of peak current circuit, grounding lightning protection circuit design.This paper produced with reliability and electromagnetic compatibility switching power supply system. And has carried on the final through magnetic compatibility test and reliability test, validation of the power system has good reliability and electromagnetic compatibility, good performance, further illustrates the design train of thought and scientific rationality, is worth to draw lessons from.