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电网互联的发展和负荷密度的增加,都迫切要求提高电力系统运行的稳定性和供电的电能质量。随着电力电子技术的日益发展,静止无功补偿器(SVC)在该领域发挥了巨大的作用。文中对TCR+FC型SVC样机的中的光电触发与监测系统进行了详细的介绍,阐述了晶闸管阀光电触发与监测系统基本要求,重点介绍了晶闸管电子板(TE)和阀基电子设备(VBE)的工作原理和具体实现。通过对它们的核心技术———取能回路与脉冲编码生成电路的说明,讨论了影响RC取能回路正常工作的各种因素,分析了电路的工作时序。在此基础上,分别对晶闸管电子板和阀基电子设备进行仿真研究,设计出一套符合静止无功补偿器(SVC)运行要求的触发与监测系统,运行试验的结果表明,样机设计效果良好。
The development of power grid interconnection and the increase of load density urgently demand that the stability of power system operation and the power quality of power supply should be improved. With the development of power electronics technology, Static Var Compensator (SVC) has played a huge role in this field. In this paper, the photoelectric triggering and monitoring system in the TCR + FC SVC prototype is introduced in detail. The basic requirements of the thyristor valve photoelectric triggering and monitoring system are expounded. The key technologies of the thyristor electronic board (TE) and the valve base electronic equipment (VBE ) The working principle and the concrete realization. Through the description of their core technology --- Fetch Circuit and Pulse Code Generating Circuit, various factors that affect the normal operation of the RC Fetch circuit are discussed, and the working sequence of the circuit is analyzed. On this basis, we simulate thyristor electronic board and valve-based electronic equipment respectively and design a triggering and monitoring system that meets the requirements of static var compensator (SVC). The result of running test shows that the prototype design works well .