用于最优无功平衡节点选择的电阻距离标准
Resistance distance criterion for optimal slack bus selection
AI总结：
研究高压交流输电网中无功平衡节点选择对传输损耗的影响，提出基于电阻距离指标的最优无功平衡节点选择方法，通过数值验证显示可有效降低传输损耗。
摘要：
本文研究了高压交流输电网中无功平衡节点选择对传输损耗的影响，提出基于电阻距离指标的最优无功平衡节点选择方法，通过数值验证显示可有效降低传输损耗。
英文摘要：
We investigate the dependence of transmission losses on the choice of a slack bus in high voltage AC transmission networks. We formulate a transmission loss minimization problem in terms of slack variables representing the additional power injection that each generator provides to compensate the transmission losses. We show analytically that for transmission lines having small, homogeneous resistance over reactance ratios ${r/x\ll1}$, transmission losses are generically minimal in the case of a unique \textit{slack bus} instead of a distributed slack bus. For the unique slack bus scenario, to lowest order in ${r/x}$, transmission losses depend linearly on a resistance distance based indicator measuring the separation of the slack bus candidate from the rest of the network. We confirm these results numerically for several IEEE and Pegase testcases, and show that our predictions qualitatively hold also in the case of lines having inhomogeneous ${r/x}$ ratios, with optimal slack bus choices reducing transmission losses by ${10}\%$ typically.
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