The Reform Problem Research Of220kV Line Protection In Shengli Oilfield

Shengli Oilfield grid along with50years of development of the Shengli oil field exploration, development, and built a framework to220kV,110kV main network35kV large enterprises all over the Dongying, Binzhou, Zibo, the oil zone grid.220kV transmission line as the backbone of the oil field power system short-circuit, short circuit current, voltage drop range. Line transmission of electric energy, transmission distance, short-circuit occurs, breaking the grid supply and demand balance, a great influence on the stability of the power system short-circuit220kV line, must be quickly removed. In order to improve power system stability, improve the delivery load capacity of the transmission line220kV transmission line protection must be used Speed protection, ie a short circuit line, the line at both ends of the protection can be instantaneous action, jump to line two side of the circuit breakers, removal of the fault.In this paper, the Shengli Oilfield, the actual transformation of the220kV substation equipment, first briefly reviews the conservation status of the Shengli Oilfield grid and220kV transmission line, and then focus discusses the transformation of a quadratic combination of substation equipment, Shengli Oilfield220kV system and220kV transmission line selected and its transformation, and transformation process of the replacement of the transformation program computer protection problems and their solutions were analyzed and discussed.