含固态限流器的变结构电力系统故障计算的补偿法

将网络操作、伴有固态限流器动作的短路故障统一处理成电力系统网络结构变化，采用向网络操作端口、虚拟固态限流器端口和虚拟短路故障端口分别接入一组虚拟网络来模拟变结构电力系统中伴有固态限流器动作的各种短路故障，建立起故障计算模型。基于补偿法，借助于相序参数变换技术，提出了一种含固态限流器的变结构电力系统短路故障计算的新方法。这种方法的主要特点在于：可适应电力系统网络拓扑结构变化；模拟网络操作、伴有固态限流器动作的短路故障所需的虚拟网络相互独立、结构简单；互感线路故障与非互感线路故障模拟方法完全相同；可精确模拟金属性与非金属性短路故障；故障计算无需修改原网数学模型。

A Compensation Method to Calculate Faults with SSFCL Operation in Power System with Variable Structure

In this paper, network operation, short circuit faults with operation of SSFCL (solid state fault current limiters) are all handled to network topology changes of power system. To simulate faults with SSFCL operation in power system with variable structure, a fictitious network is connected to network operation port, fictitious SSFCL port and fictitious short circuit port separately, and a model for calculating faults in power system with SSFCL and variable structure is developed. Based on the compensation method and phase-sequence transformation technique, a new method to calculate faults with SSFCL operation in power system with variable structure is proposed. The main advantages of the method are: 1)?it can be able to adaptive to network changes in topology; 2)?fictitious networks employed to simulate network operation, faults with SSFCL operation are independent each other and simple in structure; 3)?the same method is used to simulate faults on the line with or without mutual coupling; 4)?faults can be simulate accurately, including metallic faults; 5)faults can be calculated without modifying the mathematical model of original networks.