10 kV级晶闸管控制电容无功补偿装置的研制和试验

为使晶闸管控制电容(TCC)无功补偿装置进入实用,研制了一台10 kV 级TCC装置,并投入试运行。设计制作了一次接线装置和控制保护装置; 进行了有关电压、电流的稳态特性和暂态特性的测试; 进行了自动调节母线电压、进线cos φ和进线无功试验; 测试了系统响应时间。测试、试验和试运行结果表明,该装置无功电压调节满足设计要求,对电网不产生高次谐波,投切和换级时冲击电流小,换级过程时间小于10 ms,系统响应时间为30~40 ms,能快速频繁调节电压、功率因数和进线无功。经优化设计,装置单位容量造价可接近于机械式投切电容器(MSC)。

Development of 10 kV Thyristor Controlled Capacitor (TCC) Dynamic Var Compensator

A Thyristor Controlled Capacitor (TCC) Dynamic Var Compensator is developed and put into trial operation. The primary electric wiring device is designed, and related control and protection device is also developed. The steady state characteristics and transient behaviors of corresponding voltage and current of device are tested. Automatic voltage regulation, automatic power factor change and reactive power regulation experiments are completed under 10 kV voltage. The device response time is also tested. Test results show that reactive power regulation of device meets design requirements. There are small impact current(rush current, surge current) and no high order harmonic waves at device switching. The changing stage time is less than 10 ms. The system response time of this device is 30~40 ms. It can realize voltage regulation, power factor and reactive power regulation quickly and frequently. It can be put into practical application. Further optimization can reduce device cost per MV·A close to MSC level.