章勇高,廖赟,苏永春,王帅.特高压交直流接入对江西电网短路电流的影响研究[J].电测与仪表,2018,55(10):34-39. Zhang Yonggao,LIAO Yun,SU Yongchun,WANG Shuai.Study on the Effect of AC/DC UHV on Short - circuit Current in Jiangxi Power Grid[J].Electrical Measurement & Instrumentation,2018,55(10):34-39.
特高压交直流接入对江西电网短路电流的影响研究
Study on the Effect of AC/DC UHV on Short - circuit Current in Jiangxi Power Grid
The short- circuit current level of Jiangxi power grid is analysized when it is supplied by the AC / DC UHV by PSASP, The most widely used short-circuit current limitation measures are studied in depth. The DC component decay time constant of the node with 90% breaking breaking current of Jiangxi power grid is calculated. The influence of the DC component of the short circuit current on the breaking capacity of the circuit breaker is studied. The reasons of the short-circuit current in Jiangxi power grid increasing are studied. The measures and methods of dealing with the excessive current are proposed applied in Jiangxi power grid with UHV. The results provide the direction to high-voltage transmission plan which AC/DC UHV will be connected to Jiangxi power grid in the next 2-3 years.
