After restructuring of power system, independent system operator is facing a big challenge to manage operations on transmission networks due to growing renewables share and involvement of large market players in power system operation. Among all renewables, wind power has the most stochastic nature and faces penalties due to mismatch in its initial power committed and final power delivered. Also, wind power plants are generally located at remote areas and need longer transmission lines for power delivery. This leads to congestion of transmission lines and poses a threat to security and safety of power system. To manage congestion on transmission lines, this paper proposes a novel rescheduling based combined bidding approach for wind integrated hybrid (pool + bilateral) power system. Congestion management problem has been formulated as mixed integer non-linear programming problem incorporating proposed combined bidding approach with an objective to reduce total congestion management cost through rescheduling of wind and hydro units on the basis of their combined up and down generation cost bids. The hydro units that have lowest operating cost and fast turn-on time have been used in coordination with wind units to alleviate congestion cost. Secured bilateral transactions have been confirmed while implementing the combined bidding approach for congestion management. Performance of proposed strategy has been analyzed by demonstrating it on modified IEEE-24 bus RTS system.

电力系统重组后，由于可再生能源份额的增加和大型市场参与者参与电力系统运营，独立系统运营商在管理输电网络运营方面面临巨大挑战。在所有可再生能源中，风力发电具有最随机的性质，并且由于其初始承诺功率和最终输出功率不匹配而面临惩罚。此外，风力发电厂通常位于偏远地区，需要较长的输电线路来输送电力。这导致输电线路拥塞，对电力系统的安全和安全构成威胁。为了管理输电线路的拥塞，本文提出了一种新的基于重新调度的风力综合混合（池+双边）电力系统联合投标方法。拥堵管理问题已被表述为混合整数非线性规划问题，其中结合了所提出的联合投标方法，目的是通过根据风力和水力发电单元的联合上行和下行发电成本出价重新安排来降低总体拥塞管理成本。运营成本最低且启动时间快的水力发电机组已与风力发电机组配合使用，以减轻拥堵成本。在实施拥堵管理的联合投标方法时，已确认有担保的双边交易。通过在修改后的 IEEE-24 总线 RTS 系统上演示，对所提出策略的性能进行了分析。