This thesis mainly discusses and analyses the 35kv transmission line protection calculation, stressing the basic knowledge of reay protection in electrical power system,the principle in the desining of electrical power system protection,the calculation of threephase short circuit and two phase short circuit in the boundless system, the analysis and choice of the working mode of the system, the calculation of the three phase current protection and of the linking-up road , and the design of vibrating closedown device for the system vibrating.Finally systematically analyses the action that relay protection device in the linking-up road made when there is system fault. Meanwhile the thesis introduces the auto-reclosing device, deciding the station of auto-closing device and analysing its action, drawing the sketch map of the auto-reclosing device. The pessage also make a brief introduction for the basic knowledge and requirements for the secondary circuit , painting the picture of protection secondary circuit .
Setting calculation adopts the engineering basic-used numeration, avoiding the complex process of calculating analysis.
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注册电气工程师主要在电力公司、建筑设计院、工程公司、设备制造企业等单位工作。
我们应该在乎，但谁又在乎？最该在乎的可能是个人，个人也不会回应。我们这个世界大事太多，我们能改变的只有自己。
上海电力大学，对于该校一个无关紧要的专业，也无所谓吧。
太阳，依然升起，依然很阳光，有风，不错。
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