A comparative study of ptdf based-methods to determine transmission usage allocation for bilateral transactions in power markets

In this study, the transacted power flow in transmission networks for bilateral transactions deploying methods based Power Transfer Distribution Factor (PTDF) was analyzed and compared. The Power Transfer Distribution Factor can be classified as DCPTDF and ACPTDF. The results from these approaches using a three bus and Wood & Wollenberg six bus systems were elaborately computed and compared. The comparison shows that leveraging factors ACPTDF to allocate transmission usage is more exact but complicated than the techniques based factors DCPTDF.