标题：Static characteristics analysis of ground MHO distance relay for UHV lines
作者：Liu, Shiming ;Tang, Yongjian
作者机构：[Liu, Shiming ] School of Electrical Engineering, Shandong University, Jinan 250061, Shandong Prov., China;[Tang, Yongjian ] Yantai Dongfang Electroni 更多
会议名称：10th IET International Conference on Developments in Power System Protection, DPSP 2010
会议日期：29 March 2010 through 1 April 2010
来源：IET Conference Publications
关键词：distributed parameters; ground MHO relay; static characteristics; UHV lines
摘要：UHV/EHV long transmission lines have large distributed capacitance and shunt reactors, which may have significant effects on the operation of a traditional distance relay. The distance relay without considering any of the above two factors will operate with serious overreaching or underreaching. Several papers have analysed these effects on the measuring impedance of distance relay and proposes different schemes to ensure the reliability and selectivity of distance relay for UHV/EHV long transmission lines. This paper compares the static characteristics of these schemes, and proposes a hybrid scheme which is easier to calculate and set.