The Issue of Short-circuit Current Being out of Limitation in Guangdong Power Grid and Related Countermeasures
Short-circuit current being out of limitation is an outstanding issue for the load increase and development of power grids.Analyzing the characteristics and causes of the issue in the 500 kV and 220 kV bus lines of Guangdong Power Grid,this paper gives related counermeasures for the issue in certain situations,such as distribution equipment transformation,partition of power supply in different levels,TPSC-based short-circuit current limiter for main lines,small reactance for transformer neutral,etc.
short-circuit currentpartition of power supplythyristor protected series compensation(TPSC)transformerneutral point