经过四年的专业课程学习，在已有专业知识的基础上，了解了当前我国变电站技术的发展现状及技术发展趋向，按照现代电力系统设计要求，确定设计一个110kV综合自动化变电站，采用微机监控技术及微机保护。
在设计过程中，紧紧围绕毕业设计报告的要求，努力做到和所学的专业“发电厂及电力系统”紧密联系。在内容上，淡化繁琐的理论推导及设计论证，力争做到内容精练、重点突出、理论联系实践，努力反映本专业的新技术和新设备。
本设计根据××供电局的负荷统计和预测，××片区2008年的负荷已达36MW，预计2013年为50MW。目前××片区的供电主要由一台50MVA主变及一条110kV线路向其供电，供电可靠性与供电能力已远不能满足××片区的负荷要求，若该主变或线路发生故障，将造成××片区大面积停电，故有必要在近期内建一所110kV变电站。该变电站建成后，将主要向××片区及其附近县提供电源，满足该地区工农业生产及人民生活用电的需求。
关键词：电气设计；电流计算；电气设备
Abstract
After four years of professional courses, based on the existing expertise on the development of our understanding of the current status of the substation technology and technology development trend, according to the modern power system design requirements, determine the design of a 110kV substation integrated automation, using computer monitoring technology and computer protection.
In the design process, closely around graduation reporting requirements, and strive to learned professional "power plants and power systems" close contact. In content, desalination tedious theoretical derivation and design argument, an effort to make the content concise, focused and theory with practice, and strive to reflect the professional development of new technology and new equipment.
The design according to the load statistics and forecasting ×× Power Supply Bureau, ×× area in 2008 reached a load of 36MW, is expected in 2013 to 50MW. Currently the main power supply ×× area by a 50MVA transformer and a 110kV line to its power supply, power supply reliability and supply capability has been far can not meet the load requirements ×× Area, if the main transformer or line failure, will result × × area blackouts, it is necessary in the near future to build a 110kV substation. After the completion of the substation will provide power to the main ×× Area and around the county to meet the region's industrial and agricultural production and people's lives demand for electricity.
Keywords: electrical design; current calculation; electrical equipment
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