內容簡介：
中 文 摘 要
變電站作為電力系統中的重要組成部分，直接影響整個電力系統的安全與經濟運行。本論文中待設計的變電站是一座降壓變電站，在系統中起著匯聚和分配電能的作用，擔負著向該地區工廠、農村供電的重要任務。該變電站的建成，不僅增強了當地電網的網路結構，而且為當地的工農業生產提供了足夠的電能，從而達到使本地區電網安全、可靠、經濟地運行的目的。
本論文《110kv變電站一次部分電氣設計》，首先通過對原始資料的分析及根據變電站的總負荷選擇主變壓器，同時根據主接線的經濟可靠、運行靈活的要求，選擇了兩種待選主接線方案進行了技術比較，淘汰較差的方案，確定了變電站電氣主接線方案。
其次進行短路電流計算，從三相短路計算中得到當短路發生在各電壓等級的母線時，其短路穩態電流和衝擊電流的值。再根據計算結果及各電壓等級的額定電壓和最大持續工作電流進行主要電氣設備選擇及校驗（包括斷路器、隔離開關、電流互感器、電壓互感器等）。
最後，並繪製了電氣主接線圖、電氣總平面布置圖、防雷保護配置圖等相關設計圖紙。
關鍵詞 電氣主接線設計；短路電流計算；電氣設備選擇；設計圖紙
Abstract
Power system substation as an important part of the entire power system directly affects the safety and economic operation. To be designed in this paper is a step-down substation substation in the system plays the role of aggregation and distribution of electric energy, charged with the factory to the region, the important task of rural electrification. The completion of the substation will not only strengthen the local power grid network structure, but also for the local industrial and agricultural production provides enough power, so that the regional power grid so as to achieve safe, reliable and economic operation purposes.
The paper "110kv substation once part of the electrical design," the first original data through the analysis and selection based on total load of the substation main transformer, the main wiring under both economical and reliable, flexible operation requirements, select the main connection of two programs to be selected A technical comparison, out of poor program to determine the main electrical substation connection program.
Second, the short-circuit current calculation, obtained from the three-phase short circuit calculation occurs when short-circuit the voltage level of the bus, its steady-state current and the impact of short-circuit current value. According to the results and the voltage level of voltage and maximum continuous operating current of the main electrical equipment selection and validation (including circuit breaker, disconnecting switch, current transformer, voltage transformer, etc.).
Finally, the main draw of the electrical wiring diagram, electrical general layout map, lightning protection and other related design layout plan drawings.
Keywords
Electrical main wiring design; short-circuit current calculation; electrical equipment selection; design drawings
