应用于电力系统稳定性控制的相序交换技术  

Phase Sequence Switching Technology Applied to Power System Stability Control

作　　者：饶雄文 Rao Xiong-wen

机构地区：[1]国网江西省电力有限公司超高压分公司,江西南昌330096

出　　处：《电力系统装备》2023年第2期68-70,共3页Electric Power System Equipment

摘　　要：相序交换技术近年来在电力系统中得到了广泛的应用,但在应用过程中,应注意减小冲击电流和冲击力矩。为了减少冲击电流对电网造成的影响,提高相序交换技术的实用性,文章提出了一种分相开关控制方法,利用快速分断的特点,在三相电流过零时断开断路器。计算了应用相序交换技术产生的冲击电流和冲击转矩,以发电机出口发生三相短路为案例,进行了减小冲击的换相序装置控制方法的具体应用分析。案例仿真分析结果表明,通过使用文章所提出的控制方法而不是传统的同时切换控制方法,可以显着降低换相序过程中的冲击电流影响,提高电力系统的运行稳定性。Phase sequence exchange technology has been widely used in power system in recent years,but in the application process,attention should be paid to reducing the impact current and impact torque.In order to reduce the impact of impulse current on the power grid and improve the practicality of phase sequence exchange technology,this paper proposes a phase splitting switch control method,which uses the characteristics of fast breaking to open the circuit breaker when the three-phase current crosses zero.This paper calculates the impact current and impact torque generated by the application of phase sequence exchange technology.Taking the three-phase short circuit at the generator outlet as an example,the specific application analysis of the control method of the phase sequence exchange device to reduce the impact is carried out.The case simulation results show that the impact of impulse current during commutation sequence can be significantly reduced and the operation stability of power system can be improved by using the control method proposed in this paper instead of the traditional simultaneous switching control method.

关 键 词：换相序装置 控制方法 冲击电流 稳定性 

分 类 号：TM732[电气工程—电力系统及自动化]