원문정보
초록
영어
This paper analyzes the advantages of double breaks under series connection for 126kV HV vacuum circuit breaker. It makes efforts in the break designing to avoid hidden danger brought by voltage-sharing capacitor. Voltage is evenly distributed in the shape of ▽ at the basic break that asks for no voltage-sharing capacitors. Permanent magnetic actuator is used to ensure the synchronization of opening and closing of double breaks. Based on this layout, this paper designs a new actuator and motion system for vacuum circuit breaker optimized by virtual prototype software ADAMS and genetic algorithm. Laboratory tests have proved that the opening and closing speed of the breaker meets the speed standard and that the 126kV HV vacuum circuit breaker is feasible.
목차
1. Introduction
2. Theoretical Analysis of 126kV Vacuum Circuit Breaker with Double Breaks
2.1. Insulation Breakdown Characteristic of Vacuum Circuit Breaker
2.2. Static Insulation Characteristic of Vacuum Circuit Breaker
2.3. Dynamic Insulation Characteristic of Vacuum Circuit Breaker
2.4. Functions of Moving Contact
3. Key Problems of 126kV Vacuum Circuit Breaker with Double Breaks
3.1. Break Voltage-sharing of 126kV Vacuum Circuit Breaker with Double Breaks
3.2. Break Synchronization of 126kV Vacuum Circuit Breaker with Double Breaks
4. Determining the Motion System for 126kV Vacuum Circuit Breaker with Double Breaks
4.1. Determining the Stress Propagation of Insulating Bar
4.2. Measures to Improve the Opening Speed
4.3. Design of the Breaking Spring
4.4. Optimizing the Motion System for 126kV Vacuum Circuit Breaker
5. Test of Opening-closing Speeds of 126kV Vacuum Circuit Breaker
6. Conclusions
References