Computation of loss allocation in electric power networks using loss vector

Abstract

This paper presents the computation of loss allocation that can be applied to sellers and buyers participating in electric power trade in a deregulated power market. The approach is based on the Jacobian and Hessian matrices of the power flow equations. The losses to be allocated are derived from load flow of a specified power network and operating conditions. Loss vectors associated with demand and generation buses of the network are defined and derived and how they are applied in allocating losses to the nodes are demonstrated using an example three node network. An algorithm for the loss allocation associated with the example network is implemented using matlab programming platform. The proposed method is suitable for a application in a deregulated power market where market participants can arrange to cover for the cost of losses. The method contrasts with approach used in the underegulated electric power system where losses are accounted for by penalizing the generators using penalty factor approach.


(Botswana Journal of Technology: 2003 12(1): 7-12)