Title :
Real Power Loss Allocation for Transactions in Bilateral Markets
Author :
Daroj, Komson ; Eua-arporn, Bundhit
Author_Institution :
Ubonratchathani Univ., Ubonratchathani
Abstract :
The context of transmission loss allocation raised and debated under restructuring of electric supply industry. It is normally defined as a procedure of allocating or charging all participants for their transmission real power loss. In a traditional theory of electricity spot pricing contribution of transmission loss to inject/withdrawal power at each bus is aggregated in a nodal price as an incremental transmission loss. This term is definitely depended on choice of a slack bus thereby charging based on nodal price is a discrimination even a slack bus is specified beforehand with agreement of all participants. The impact of a slack bus, however, has less affect for allocating loss based on transactions with a specified source and sink under bilateral/multilateral markets. In this paper, the authors proposed methodology for allocating transmission loss to bilateral/multilateral contracts in advance for dispatching in real-time. It is formulated based on a slack bus independent concept associated with a fine tuned algorithm to increase calculation speed. Network topology and system condition are taken into account. The proposed method is tested with a 6-bus an IEEE 30-bus systems, from which the results obtained from the IEEE 30-bus system are compared with the one obtained from a pro-rata method. Promising results are obtained and shown that, for transaction of bilateral/multilateral contracts, the proposed method is more sensible than the pro-rata method.
Keywords :
load dispatching; losses; power markets; power transmission economics; pricing; IEEE 30-bus system; bilateral markets; electric supply industry restructuring; electricity spot pricing; multilateral markets; network topology; nodal price; real-time dispatching; transactions; transmission power loss allocation; Contracts; Costs; Dispatching; Electricity supply industry; Load flow; Power generation; Power systems; Propagation losses; Real time systems; Sensitivity analysis; Loss allocation; bilateral market; incremental loss; slack bus independent; transaction;
Conference_Titel :
Power System Technology, 2006. PowerCon 2006. International Conference on
Conference_Location :
Chongqing
Print_ISBN :
1-4244-0110-0
Electronic_ISBN :
1-4244-0111-9
DOI :
10.1109/ICPST.2006.321836