Tracing and Transmission Cost Allocation of Active Power Flow Based On Extended Incidence Matrix
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 6
Abstract
In the present open access restructured power system market, it is necessary to develop an appropriate pricing scheme that can provide the useful economic information to the market participants such as generation, transmission companies and customers. Because of the introduction of competition in the electricity supply industry, it has become much more important to be able to determine which generators are supplying a particular load, how much use each generator is making of a transmission line and what is each generator’s contribution to the system losses. However, accurately estimating and allocating the transmission cost in the transmission pricing scheme is a challenging task although many methods have been proposed. The objective is to introduce a simple transmission pricing scheme using a power flow tracing method, in which transmission service cost is considered. The proposed method is an analytical method for tracing of power flow based on the concept of extended incidence matrix (EIM). The proposed method can handle any power system with or without loop flows and is flexible to start with an AC or DC power flow solution. After obtaining the load flow solution, the extended incidence matrix, distribution factor matrix and load extraction matrix are developed. Using the extended incidence matrix, the contribution of generator to each load and line are calculated. Then the Transmission service charge is allocated among the generators and loads according to the 50/50 split savings method . The effectiveness of the proposed method is illustrated using a 4- bus, IEEE 14 – bus system, IEEE 30-bus system.
Authors and Affiliations
N. Prakash Reddy
Keywords
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