Assessment of Available Transfer Capability for Congestion Management in Restructured Electrical Power Network for Competent Operation

Congestion is the prime cause of problems, due to open access of power system. The AC Power Transmission Congestion Distribution factor (PTCDF) is suitable for computing change in any line quantity for a change in MW bilateral transaction. The proposed PTCDF method is more accurate as compared to the DC power distribution factor. With PTCDF ATC can be calculated. After calculating ATC it is possible to know the valid multiple transaction on power system. With the help of ATC calculations congestion problem can be solved in restructured electrical power network. The paper presents the method for calculating ATC using PTCDF.

一种点对点阻塞电价计算方法

针对当前集中交易为主同时存在大用户直供试点的市场模式,提出了一种点对点阻塞电价计算方法。给出了该算法的基本思想及详细描述,根据集中交易中无约束经济调度和考虑单个阻塞线路传输容量经济调度购电成本的差值计算阻塞线路传输单位能量的阻塞费用,进而基于功率传输分配系数矩阵计算点对点阻塞电价,根据需要可以在协议双方之间分摊。该算法中,加重阻塞的协议要支付阻塞费用,而减轻阻塞的协议应得到阻塞补偿,且阻塞费用(阻塞补偿)的大小取决于协议对阻塞线路潮流影响的程度。对PJM电力市场中的5节点算例进行了试算,并与金融输电权进行了对比,结果表明:点对点阻塞电价计算方法能够提供有效管理阻塞的经济信号,且简便易操作。