特高压输电线路端电压控制域的计算方法研究

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control(2011)

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Abstract
采用特高压现有无穷大电势源等值法获取端电压二维控制域时,会得出投入容性无功补偿将降低特高压沿线电压这一"错误"结论,对此研究证明:变压器中压侧绕组等效阻抗为负是造成二维电压运行下限上移的主要原因。提出了一种新的等值电势源法,即将华中电网和华北电网分别等效成含内阻抗的电势源。采用该等值方法时,无功补偿装置的投切所引起的电压控制域的变化趋势与电压无功理论相符,同时还可以考虑线路输送功率变化时,由线路功率和两端母线电压共同形成的三维控制域。
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Key words
Bus voltage method,Equivalent potential source method,Terminal voltage control domain,Three-dimension voltage control domain,Ultra-high voltage
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