大电网继电保护并行整定计算中故障电气量的计算

选择大电网中各大区电网之间的互联线路作为联络线,以联络线为边界将大电网分解成相互间无电磁联系的子系统群,采用分解协调法来计及各子系统之间的相互影响,采用补偿法来模拟各子系统内的网络操作,在不修改原网各子系统数学模型的前提下,提出了一种大电网继电保护整定计算中故障电气量的并行计算方法。该方法既适用于大电网继电保护离线并行整定计算又适用于在线并行整定计算。

Fault calculation for relay parallel setting and coordination in a large-scale power system

By taking the tie lines among electric networks as boundary lines,a large-scale power system is decomposed into some sub-systems.The decomposition-coordination method is employed to deal with the effects among sub-systems,and the compensation method is used to simulate network operations in a sub-system.Under the condition of not modifying the mathematical model of sub-systems,a parallel method to calculate fault electric parameters for relay setting and coordination in a large-scale power system is presented.The proposed method can be used both on-line and off-line in the relay parallel setting and coordination of a large-scale power system.