输电阻塞调度的综合评价因子模型

基于灵敏度思想进行输电阻塞管理,能以较小的调整量消除阻塞,但很少考虑系统的经济性。而发电侧电力市场要反映低价机组优先上网的原则,因此选择参与调整机组时需要同时考虑灵敏度和报价因素。从直流潮流和交流潮流方程出发推导各节点注入功率对支路潮流的灵敏度,将其与各机组报价相结合构成综合评价因子,作为选择调整机组的依据,建立以消除阻塞费用最小为目标的输电阻塞管理模型,并采用线性规划进行求解。通过IEEE-RTS24节点系统验证了该方法的有效性和正确性。

Model of integrate evaluation factor in transmission congestion dispatch

Transmission congestion management based on the sensitivity can remove congestion quickly with minimal adjustments.However,it is not an ideal solution due to ignoring system economic factors.As is well known,low-bidding generators have priority in electricity markets.Sensitivity and costs therefore must be considered simultaneously as generators are adjusted.Sensitivity was obtained from direct current(DC) and auternating current(AC) flow equations,and the integrated evaluation factor(IEF) was built with sensitivity and the generation bidding.This was the basis for selecting adjusted generators.A congestion management model was established to minimize costs and was easily calculated by linear programming.Tests on the IEEE-RTS24 buses system and other practical systems show that the proposed method is effective.