Congestion Management In Regional Power Markets

As electricity markets progressively mature, they are opening their borders to develop inter-regional tradings. While having so many advantages of the development of inter-regional electricity markets, it also brings out a lot of problems. Inter-regional transmission congestion is one of these important questions. To this question, the paper proposes the approach to inter-regional congestion management based on coordinated auction, considering two different trading modes: bilateral trading and mixed pool/bilateral trading. When building modeling, we distinguish physical path from contract path and convert contract path into physical path using generation shift distributed factors (GSDF). Two steps are taken when allocating congestion costs. The first step is to allocate the congestion costs to each contract by GSDF, and then the costs involved in the Pool is further allocated to the partners in the pool by power flow tracing. Finally test cases are given to verify the proposed model and method correction and effectiveness.