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2015-01-23
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ABSTRACT
Design the task this time is aim at intensity of mastering of every subject knowledge of this speciality reflecting, and of test this speciality¡¯s study result. first, analyze the tend of load department according to all parameter of load about system and circuit on task book. It expounds the necessity to this situation from the rspect of increasing load. Then through to the generalization of planning to build the transformer substation and the analysis of the load materials, safe, economy and dependability are considered, has confirmed the mainly wiring form of 110kV, 35kV, 10kV. Calculated and supplied power in the range and confirmed TV station's number of the main voltage transformer through load finally, capacity and type, capacity and type of using the voltage transformer stand surely at the same time, finally, the result of calculation of calculating that and short out according to the electric current of largest lasting job, make the circuit to protect, the voltage transformer is protected, the bus bar is protected, prevent the thunder from protecting. Thus finished electric designs of the part two times of 110kV.
Key Words£ºPower system£»short out in the electric current£»relay protection.