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500千伏宁州变位于云南省玉溪市以东65千米的华宁县花溪镇,主要对玉溪东部的江川县、华宁县、通海县进行供电,其供电范围包括已建成的220千伏江川变、泉乡变、杞麓变以及拟建的220千伏雄关变、曲陀关变。从玉溪市500千伏层面电力平衡情况来看,201 3年玉溪全市500千伏下网电力达2269兆瓦、2014年达2503兆瓦、2015年达2766兆瓦。在201 3年500千伏宁州变建成后,玉溪市500千伏主变容量达4000兆伏安,
500 kV Ningzhou is located in Huaxi Town, Huaying County, 65 kilometers east of Yuxi City, Yunnan Province. It mainly supplies power to Jiangchuan County, Huaning County and Tonghai County in the east of Yuxi. Its power supply range includes 220kV Jiangchuan , Quanxiang change, Qilu change and the proposed 220 KV off, Song Tuo off change. According to the 500 kV power balance situation in Yuxi City, the power supply of 500 kV network in Yuxi City reached 2269 MW in 2010, 2503 MW in 2014 and 2766 MW in 2015. After the transformation of 500 kV Ningzhou in 2003, the 500 kV main transformer capacity of Yuxi City reached 4000 MVA,