TH-C 型通用微机电容器保护装置的设计

Study of Microcomputer-Based Universal Capacitor Protection System-TH-C

本文简要介绍了并联电容器在电力系统中的作用，分析了电容器运行中可能出现的故障和异常情况，进而详述了ＴＨ－Ｃ通用型微机电容器保护装置的功能、特点、硬件结构和保护软件流程，并着重分析了并联补偿电容器采用微机保护的优越性。其研制成功和投入运行，对实现全变电站综合自动化和保护电容器的安全运行具有重要的实际意义。

In this paper the functions of applying parallel capacitor banks in power system are discussed briefly The possible capacitor faults and abnormal cases are analyzed The paper also discusses the functions, characteristics, hardware structure and software flow charts of the TH-C type of microcomputer based universal capacitor protection system, and specially analyzes the advantages of parallel capacitor protection system by microcomputer Its successful realization is obviously significant in realizing the comprehensive automation for power substations and making the operation of the capacitors more safely