摘要
为解决有源网络的保护问题,对相关的断路器应用技术进行了研究。通过对电弧更有效的控制,实现直流断路器的开断能力与极性无关,使其满足光伏发电系统的保护需求。通过将真空灭弧技术与ACB操作机构相结合,提高断路器在AC690~1 140 V电压下的开断能力。通过对操作过程的有限元分析和优化设计,提高断路器的操作寿命,使其满足风力发电系统的保护需求。通过采用方向性的区域选择性联锁技术,解决了多电源系统中的选择性保护问题。运行经验表明,上述工作有效提高了有源网络运行的安全性。
The relevant technologies of the low-voltage circuit breaker are studied to solve protection problem in the active electric network. By controlling arc motion efficiently, the breaking capacity independent of polarity is improved to satisfy the protection demand of the PV generator system. By combining vacuum arc extinguishing technology and ACB operating mechanism, the breaking capacity of the circuit breaker is improved at the AC voltage range of 690-1149 V. And FEM analysis and optimization of operating mechanism are studied to increase the life of the breakers, which can fit protection demands in the wind turbine system. Based on directional ZSI（zone selective interlocking） technology, selective protection can be realized in the electric network with multi power sources. Application experience of the low voltage circuit breakers shows that above works can greatly ensure the operating security of the active electric network.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2015年第3期127-130,共4页
Power System Protection and Control
关键词
有源网络
断路器
应用研究
active electric network
low voltage circuit breaker
application study
