基于GTO的±20Mvar STATCOM的现场运行及改进

FIELD OPERATION AND IMPROVEMENT OF GTO-BASED ±20 Mvar STATCOM

随着电力系统规模的不断扩大 ,电力系统无功问题及动态电压稳定问题日益突出 ,高压大容量新型静止无功发生器 ( STATCOM)是解决上述问题的强有力手段。文中简单介绍了中国首台±2 0 Mvar STATCOM工业样机的基本原理 ,重点描述了± 2 0 Mvar STATCOM的现场运行情况 ,根据现场记录的数据给出了装置的运行率、计划停运率及强迫停运率。对装置在现场运行中出现的问题及故障的原因进行了分析 ,并提出了改进措施。± 2 0 Mvar STATCOM的现场长期运行 ,为大容量 STATCOM的进一步完善及工业化提供了宝贵的经验 。

With the development of power systems in China, the shortage of reactive power compensation and the dynamic voltage stability of power systems are increasingly obvious. High voltage and large capacity static compensator (STATCOM), which is independent of bus voltage and can compensate reactive power efficiently, can be used to solve the problems. In this paper, the basic principle of the first ±20 Mvar STATCOM device in China is briefly introduced, and the field operation status of ±20 Mvar STATCOM is described in detail. The statistical results such as the total operating time, the stopping operating time in the plan and the fault time are calculated according to the field operation records. The causes of the faults occurring in the field operation of ±20 Mvar STATCOM are analyzed, and the improving measures are presented. The long time field operating experiences will contribute to the improvement and industrialization of high voltage and large capacity STATCOM product.