【正文】 ormer substation as the main design object, this 110KV transformer substation is the local important transformer substation, is the electrical power system 110KV voltage rank important part. This transformer substation is equipped with 2 main transformers, in the station the host witing divides into 110KV, 35KV and 10KV three voltages ranks. This design first chapter is an introduction, mainly elaborated the transformer substation in electrical power system status. Designs the transformer substation the principle and the goal as well as the transformer substation basic situation. Second chapter is shoulders the putation and the transformer choice, carries on the load putation according to the known transformer substation load material to the transformer substation. Through the load which obtains had determined the host changes the capacity and a number, the host change the pattern, the winding wiring way, the accent press the way and the host changes the impedance. Third chapter is the transformer substation electricity host wiring design, separately through to 110KV, 35KV, 10KV side electricity host wiring drawing up, chooses the stablest reliable wiring way. Fourth chapter is the short class putation, first determined shortcircuits the spot,calculates various parts reactance, then to respectively shortcircuits separately to carry on the putation, obtains respectively shortcircuits the shortcircuit current. Fifth chapter is the electrical equipment choice, the electrical equipment including the generatrix, the circuit breaker, the isolator, the electric current and the voltage transformer, the fuse, grounding switch and reactor. Sixth chapter is relay protection, mainly from the transformer substation, the host wiring, transmission lines describes the configuration of the relay protection principles and setting calculation. Seventh chapter is part of unmanned substation automation systems,focuses on the implementation of the unmanned substation . Through to the 110KV transformer substation design, causes me has to the electrical engineer and its the automated specialized branch curriculum to be prehensive, system grasping, strengthened apply theory to reality the ability, raised the project consciousness, exercised me independently to analyze and the solution electric power project design question ability. Key words: Single busbar main wiring Shortcircuits the putation Transformer protection Unmanned substation automation systems 目錄 摘要 .................................................................................................................................. I Abstract..........................................................................................................................II ............................................................................................................................. 1 .................................................................................... 1 .............................................................................................. 1 ........................................................................................... 2 .............................................................................................. 3 ............................................................................................................ 4 .................................................................................................. 4 .................................................................................................. 4 .................................................................................................. 5 ...................................................................... 5 ................................................................................ 5 ................................................................................ 6 .................................................................................... 6 ................................................................................ 6 ............................................................................................................ 7 .................................................................................................. 7 ....................................................................................... 7 ....................................................................................... 9 ...................................................................................................... 10 .................................................................................. 10 ................................................................................................ 10 ................................................................................................ 12 ............................................................................................ 12 110KV 側(cè)主接線方案的選取 .................................................................... 12 35KV側(cè)主接線方案選取 ......................................................................... 16 10KV側(cè)主接線方案選取 ......................................................................... 18 ............................................................................................................. 20 ......................................................................................... 20 ................................................................................................... 21 ................................................................ 21 110KV 母線側(cè)短路電流的計(jì)算 ................................................................ 23 35KV母線側(cè)短路電流的計(jì)算 .................................................................. 24 10KV母線側(cè)短路