本次設計首先根據任務書上所給系統與線路及所有負荷的參數，分析負荷發展趨勢。從負荷增長方面闡明了建站的必要性，然后通過對擬建變電站的概括以及出線方向來考慮，并通過對負荷資料的分析，安全，經濟及可靠性方面考慮，確定了110kV，35kV，10kV以及站用電的主接線，然后又通過負荷計算及供電范圍確定了主變壓器臺數，容量及型號，同時也確定了站用變壓器的容量及型號，最后，根據最大持續工作電流及短路計算的計算結果，做出線路保護，變壓器保護，母線保護，防雷保護。從而完成了110kV電氣二次部分的設計。
關鍵詞：二次部分，變電站 ,短路電流，繼電保護。
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
