110kV 变电站电气一次部分初步设计摘 要随着电力技术高新化、复杂化的迅速进展，电力系统在从发电到供电的所有领域中，通过新技术的使用，都在不断的发生变化。变电所作为电力系统中一个关键的环节也同样在新技术领域得到了充分的进展。根据设计任务书的要求，本次设计为 110kV 变电站电气一次部分初步设计，并绘制电气主接线图与其他图纸。首先，进行了电气主接线的选择，把电气主接线分为 110kV、35kV 和 10kV 三个电压等级，经过各个方案的优缺点比较，确定了各个电压等级分别采纳单母线分段带旁母接线、单母线分段带旁母接线和单母线分段接线。其次，根据要求进行了主变压器的选择、短路电流计算、主要电气设备选择与校验，包括断路器、隔离开关、电流互感器、电压互感器、母线等。最后，对防雷保护和接地方案的设计进行了选择。关键词：变电站；主变压器； 防雷保护ABSTRACTAlong with the economic development and the modern industry developments of quick rising, the design of the power supply system become more and more completely and system. Because the quickly increase electricity of factories, it also increases seriously to the dependable index of the economic condition, power supply in quantity. Therefore they need the higher and more perfect request to the power supply. Whether Design reasonable, not only affect directly the base investment and circulate the expenses with have the metal depletion in colour metal, but also will reflect the dependable in power supply and the safe in many facts. In a word, it is close with the economic performance and the safety of the people. Along with the high and quick development of electric power technique, electric power system then can change from the generate of the electricity to the supply the power.From the guide of engineering design assignment, we have to design primary power-system of 110kV substation and draw main electrical one-line diagram and others. First, the main electrical connection can...
