本次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,35kV,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,同时也确定了站用变压器的容量及型号,最后,根据最大持续工作电流及短路计算的计算结果,做出线路保护,变压器保护,母线保护,防雷保护。从而完成了110kV电气二次部分的设计。
关键词:二次部分,变电站 ,短路电流,继电保护。
ABSTRACT
This design first gives the system logical circuit and all load parameter according to the project description, the analysis load trend of development. Had expounded from the load growth aspect the station construction necessity, then through to plans to construct the transformer substation the summary as well as the going beyond a line direction considered, and through to shoulders the material the analysis, safe, the economy and the reliable aspect considered, had determined 110kV,35kV,10kV as well as the station use electricity the main wiring, then calculated through the load and supplies power the scope to determine the main transformer Taiwan number, the capacity and the model, simultaneously also had determined stood with transformer's capacity and the model, finally, according to most greatly continually the operating current and the short circuit computation's computed result, made the line protection, the transformer protection, the bus protection, anti-radar protection. Thus has completed the 110kV electricity two partial designs.
key word: Two parts, transformer substation, short-circuit current, relay protectionn