Design Of Electrical Part On Shiji 220kV Substation To Xindu District In Baotou City

Substation,as an important part of the power grid,has a direct impact on the safe and reliable operation of the entire power grid system.It also connects with the power station and users.Our normal production and life will be affected with brokendown of power station.So the power station is very important without a debt.Baotou power grid is located in the central position of Inner Mongolia,which undertakes the power supply task of the whole baotou city.Baotou electric power has been developing rapidly in recent years,and the scale of power grid has been expanding continuously.In addition,due to the scarcity of land resources,higher requirements are put forward for the compactness and practicability of substation construction in power construction,which need to be considered at the beginning of design.In this paper,the 220 kV substation in baotou xindu urban area is designed based on the characteristics of Inner Mongolia power grid operation mode.The voltage of this substation has three grades of 220kV/1l0kV/10 kV.This paper mainly designs the overall structure of the substation,expounds the design principles and basic requirements of the main electrical wiring,and analyzes the power supply load in baotou xindu urban area,and preliminarily describes the overall structure of the substation.The design part of the electrical primary system of the substation in xidu urban area mainly demonstrates the main wiring scheme of the substation,the capacity and model of the main transformer,the neutral point grounding mode and reactive power compensation.Through the calculation of short-circuit calculation,the selection of electrical equipment,and the design of lightning protection grounding protection,thus completing the design of the electrical primary system.Then the secondary system design of the substation,including scheduling system and communication system design.At last,the protection design of the system is carried out from the aspects of system relay protection and main transformer protection design.The system design starts from the original data of the power system and strictly complies with the relevant design principles and level requirements,so as to make the system design more economical,reasonable and reliable.