短期发电权交易对系统网损的影响

Impacts of Short-Term Generation Rights Transaction on Network Loss for Power System

采用基于直流潮流方程的方法计算发电权交易对系统网损的影响,该方法计及了每个潮流状态,更符合发电权交易改变潮流的实际情况.通过分析代发交易电量进行的机理与过程,针对日发电权交易模式下在交易时段平均分摊交易电量的不合理做法,采用3次样条插值方法,拟合出一条可根据交易电量进行调整的交易电量分摊曲线,从而代替传统的平摊方法.通过IEEE13节点算例,并结合3种情况验证了该方法的合理性.

Network loss caused by the power generation right trade and impact on the system based on DC power flow equation are calculated. The method takes into account each power flow state, and better conforms to the practical situation of generation right trade. By analyzing the mechanism and process of generation right trade, a trading power allocation curve is fitted using cubic spline interpolation. This avoids the drawback of average allocation of trading power within the trading hours under the daily generation right trade mode. The curve can be adjusted by trading power, and can replace the average allocation method. The proposed method is verified by an IEEE13 node example.