摘要:隨著工業的發展以及用電需求量的不斷增加電力系統主電網的規劃顯得日益重要，它關系著用戶能否得到可靠優質的電能也關系著生產力的發展。

　　 本設計根據原始資料提供的電源信息、負荷信息以及地理信息做出相應的功率平衡，確定電壓等級，確定發電廠變電站主接線、變壓器臺數及容量，按經濟截面選擇備選方案導線，從機械強度、載流量、電壓損失等方面確定導線型號，然后根據電能損耗、線路投資以及年計算費用進行技術經濟比較，確定最終方案。

最后根據最終方案的潮流計算結果選定調壓方案。本設計給出所選方案的主網接線圖及潮流分布圖。

關鍵詞 ：主電網  潮流計算  調壓方案

ABSTRACT:Along with the development of the industry and the increasing electricity demand of electric power system of the main grid planning is increasingly important, it was about whether the user can get reliable high-quality electricity also relationship with the development of productive forces.

　　　This design according to the information of original data provided by the power supply, load and power balance of the geographic information accordingly, determine the voltage grade, determine power plant substation main wiring, sets and the capacity of transformer, according to the economic section choice alternatives conductor, from the aspects such as mechanical strength, carrying capacity and voltage loss conductor type is determined, and then according to the electric energy loss and line investment costs of computing and technical and economic comparison, to determine the final plan according to the final solution of power flow calculation results regulating scheme is selected. This design gives main wiring diagram and the trend of the distribution of the selected scheme.

Keywords: Main grid   Power flow calculation   Surge tank scheme