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毕 业 设 计『论 文』论文题目:XB220KV 变电所一次部分设计 系 别: 专 业: 电气自动化技术 班 级: 学 号: 姓 名: 指导老师: 提交时间: 1 摘 要 随着我国经济的快速发展,电网的负荷也飞速增长导致对中间变电站的需求越来越大,特别是处于中间环节的主变是 220kv 的变电站。
本变电站设计以实际工程技术水平为基础,以虚拟的变电站资料为背景,进行含有 3 台主变的 XB220KV中间变电所一次部分设计 本设计首先根据任务书上的要求,对电力系统和变电所进行总体分析,从负荷增长方面阐明了建站的必要性。
接着,由电力系统的规划及供电范围确定了主变压器台数、容量及型号。
然后通过变电所的概括以及对拟建进出线条数来考虑,从可靠性、经济性、灵活性方面考虑,确定了 220kV、110kV、10kV 侧主接线,同时也完成了所用电的设计和无功补偿的设计。
然后,根据最大持续工作电流和短路电流计算的计算结果,对高压断路器、隔离开关、母线、绝缘子和穿墙套管、电压互感器、电流互感器进行了选型。
然后又根据变电所地理位置和变配电要求以及电气总平面布置要求,进行配电装置设计与电气总平面布置设计。
最后对变电所进行防雷设计,从而完成了 XB220kV 变电所一次部分设计。
关键词:电力系统 变电所 主接线 短路电流计算 2 Abstract With the fast development of our country’s economy the electricalnetwork load also rapidly grows in the electrical network will have the220kV transformer substation which 3 hosts will change gradually toincrease. This transformer substation design take the actual projecttechnical level as the foundation take the hypothesized transformersubstation material as the background carries on includes XB220KVtransformer substation partial designs which 3 hosts changes. Firstly according to in the project description the request thisdesign carries on the overall analysis to the electrical powersystem andthe transformer substation has expounded the station constructionnecessityfrom the load growth aspect. After that has determined a maintransformer number the capacity and the model by the electricalpowersystem plan and the power supply scope. Then through the transformersubstation summary as well as to plans to construct the turnover linenumberto consider that from the reliability the efficiency the flexible aspectconsidered had determined the design which 220kV110kV the 10kV side hostwiring simultaneously also completed which has used electricity the designand the idle work compensates. Thenaccording to most greatly continuesthe operating current and theshort-circuit current computation computedresult to the high-pressured circuit breaker the isolator the generatrixthe insulator and put on the wall drive pipe the voltage transformer thecurrent transformer has carried on the shaping. Then and changes thepowerdistribution request as well as the electrical total plane arrangementrequest according to the transformer substation geographical positioncarries on the power distribution equipmentdesign and the electrical totalplane arrangement design. Finally we carryon the anti-radar design to thetransformer substation thus has completed XB220kV transformer substationpartial designs.Key word: Electrical power system Electrical power system Main wiring Short-circuit current computation 3 目录摘 要 .....................................................