Design Of Electrical System For Traction Substation Of Passenger Dedicated Line

Since the founding of the People's Republic of China,our country's railway transport from a poor white to the national railway smooth,experienced a qualitative leap,"to be rich,build roads first",it can be seen that transportation for a region's economic development has a pivotal role,and railways in some remote areas can often play a very critical role,and in today's society,The rapid development of railway transportation has not only brought about real life changes to the masses of the people,but also made our economic have been very good development,The development of the railway transportation industry in the 21 st century has received worldwide attention.The advantages of high-speed railway have been recognized by the world.Its strategic significance has become the consensus of governments.High-speed railways promote exchanges and balanced development between regions,and build on busy trunk lines.The passenger dedicated line can realize the transportation of passenger and cargo lines,which can greatly improve the railway transportation capacity.It can not only ease the situation of tight line transportation capacity,but also meet the requirements of incremental transportation in large economic regions and large cities.Cable is used to develop heavy-duty transport of goods and to adapt to the growing transportation needs.Under the premise of rapid development of railways,the development of traction substations is of great significance.Traction substation converts the electric energy transmitted by the regional power system into electrical energy suitable for electric traction according to the different requirements of electric traction and current and voltage.It can provide electricity for electric locomotives or locomotive loads,so that the locomotives can operate smoothly,and the key to electrified railways is traction substations.Therefore,the safe and efficient operation of traction substation will directly affect the operation of the railway,whether the operation of traction substation is efficient and has great significance for the electrified railway.This paper first analyzes and introduces the meaning of the design of passenger-specific traction substation and the research status of traction substation at home and abroad.Then,the power supply mode of the traction substation is analyzed in detail,and the main wiring scheme of the traction substation is determined through the discussion of different main wiring modes.Finally,according to the relevant data,the calculation of the traction transformer capacity is carried out,including the three-phase symmetrical short-circuit calculation,the traction side short-circuit calculation of the traction substation and the traction network short-circuit calculation.According to the short-circuit calculation result,the selection and verification of the electrical equipment of the traction substation,including the high-voltage circuit breaker,the high-voltage isolating switch,the voltage transformer and the current transformer,etc..The design of the measures and grounding system.