Title :
Very fast over voltage simulation and analysis in 500kV GIS substation of Xiangshuijian pumped storage power station
Author :
Sun, Shujie ; Yao, Meiqi
Author_Institution :
AREVA T&D China Technol. Center, Shanghai, China
Abstract :
Based on the power system simulation software DIgSILENT, this paper presents the Electro-Magnetic Transient (EMT) simulation of Very Fast Transient Overvoltage (VFTO) phenomena in 500kV GIS substation of Xiangshuijian pumped storage power station. The modeling of GIS components and its connected equipments are summarized. The operation of disconnector in GIS under different typical substation configurations is simulated. It is concluded that the highest VFTO level in the GIS substation is below 500kV substation Lightning Impulse Withstand Voltage (LIWV). The influence factors of VFTO are studied in this paper, including transformer entrance capacitance, residual charge of GIS bus conductor and the cable length between GIS and transformer. The variation regularities of VFTO level with these factors are concluded.
Keywords :
gas insulated substations; power system simulation; pumped-storage power stations; GIS bus conductor; GIS substation; VFTO level; Xiangshuijian pumped storage power station; electromagnetic transient simulation; lightning impulse withstand voltage; power system simulation software DIgSILENT; transformer entrance capacitance; very fast transient overvoltage simulation; voltage 500 kV; Capacitance; Circuit breakers; Conductors; Geographic Information Systems; Integrated circuit modeling; Power cables; Substations; DIgSILENT; GIS; Very fast transient over voltage; disconnector; electro-magnetic transient simulation; insulation coordination;
Conference_Titel :
Electricity Distribution (CICED), 2010 China International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-0066-8
