摘要
Abstract
Equations for calculating short circuit current of power system is discussed , on the basis of which the mathematical model for determine the current limiter impedance with system short circuit current limit values is established. For a single set of current limiter , the model is a set of linear equations with only one solution; for multiple sets of current limiters , the model is a set of linear indeterminate equations with multi-ple solutions. By using generalized inverse method and optimization method , corresponding optimized solution can be obtained directly from compatible solutions of the linear indeterminate equations and the configuration and optimization of multiple sets of current limiters can be implemented without overrunning the short circuit current limit of power system. The algorithm is of favorable convergence and high calculation speed , and hence fits to be applied in the large system. In many cases, Using a single set of current limiter can not meet the requirements, while using multiple sets of current limiters can effectively restrain the short circuit current in the required range. The effectiveness and practicability of the algorithm are verified by engineering practices.关键词
电力系统/短路电流/短路限流器/故障限流器/广义逆方法/最优化方法Key words
power system/short circuit current/short circuit current limiter/fault current limiter/general-ized inverse method/optimization method分类
信息技术与安全科学
