变电所10KV母线继电保护系统设计 -毕业设计.doc

PAGE PAGE \* MERGEFORMAT I 变电所10KV母线继电保护系统设计 DESIGN OF RELAY PROTECTION SYSTEM OF 10KV QENERATRIX STATION 摘要 变电站是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济运行，是联系发电厂和用户的中间环节，起着变换和分配电能的作用。电气主接线是发电厂变电所的主要环节，电气主接线的拟定直接关系着全厂（所）电气设备的选择、配电装置的布置、继电保护和自动装置的确定，是变电站电气部分投资大小的决定性因素。 本设计首先根据任务书上所给系统与线路及所有负荷的参数，分析负荷发展趋势。从负荷增长方面阐明了建站的必要性，然后通过对拟建变电站的概括以及出线方向来考虑，并通过对负荷资料的分析，安全，经济及可靠性方面考虑，确定了110kV，10kV以及站用电的主接线，然后又通过负荷计算及供电范围确定了主变压器台数，容量及型号，同时也确定了110kV架空线、10kV母线、高压隔离开关、高压开关柜、无功补偿装置等电气主设备的选型与校验。最后，根据最大持续工作电流及短路计算的计算结果，做出10kv母线继电保护设计和整定并实现微机监控。 关键词：电力系统，短路电流，继电保护 DESIGN OF RELAY PROTECTION SYSTEM OF 10KV QENERATRIX STATION ABSTRACT Substation is an important part of the power system, which directly affect the entire power system security and economic operation of power plants and users to link the middle part, play a role in transformation and distribution of electricity. Main Electrical wiring is a major part of power plant substation, electrical main wiring a direct bearing on the formulation of the plant (the) selection of electrical equipment, power distribution equipment layout, relay protection and automatic device established that it is part of the electrical substation investment in the size of the decisive factor. The design of the first book based on the task to the system and all load and line parameters, analysis of load trends. From the load growth illustrates the need for Jian Zhan, and then to the summary of the proposed substation and the outlet direction of consideration and analysis of information through the load, security, economic and reliability considerations, determine the 110kV, 10kV and the station main electricity cable, and then through the load calculation to determine the scope and power of the main transformer station number, size and model, but also identified the 110kV overhead lines, 10kV bus, high-voltage isolation switch, high voltage switchboard, reactive power compensation devices, electrical Main Equipment Selection and validation. Finally, based on