Research On Allocation Of Energy Losses Based On Improved Power Flow Tracing Method

With the fast development of global innovation in power market, the electric power industry monopoly pattern in the traditional way is being replaced by the market mechanism. In the past, the loss allocation has not aroused the attention in vertical management pattern. At present, the market competition mechanism is introduced to the electric power industry. How to allocate loss to every user fairly and reasonably has become one of the hottest researches for many scholars and electricity companies.First, the development and situation of losses allocation are reviewed in this paper. General method of power flow tracing has been analyzed. And the paper points out that the loss allocation method, which is based on the active power and reactive power decoupled tracing, is not reasonable. Based on the complex sharing principle, a complex power tracing based loss allocation method is proposed. The bidirectional allocation method, namely each component's transmission loss in the network is shared by both the generators and loads, is also put forward.Secondly, the Radial Equivalent Independent method is inducted to solve the problem of loss allocation in this article. At first, the original network is simplified by REI equivalence method, then, the network losses are allocated to the generator nodes and load nodes by the power flow tracing method. In the way, the coupling relation of active power and reactive power was considered. What is more, according to the method the network losses can be allocated more sententiously and perspicuously.Finally, based on the practical problem of wheeling fee in electricity market, this paper decided the questions of wheeling fee which should be paid attention and researched the component of power loss of transmission line in electric power networks. Then, the wheeling cost model which is based on the over head costs and takes into account the power loss, congestion and reliability of power system also was putted forward. Furthermore, an example is used to verify the feasibility of the model.