| Based on the detailed discussion of various power transmission and distribution control, transmission and distribution price, transmission and distribution cost allocation method, it was proposed a distribution price transmission suitable for the regional power grid computing model, taking Wuhai power grid transmission and distribution price analysis to verify its correctness and effectiveness as an example. Specific content are as follows:Firstly,form the angle of investment incentives, cost control with X efficiency and A-J effect will inhibit investment from some kind of degree; incentive regulation mode is conducive to attracting investment. Regulation model of power transmission and distribution yardstick competition by cluster analysis method, considering the incentive regulation and power transmission and distribution business, and fully consider the factors which influence the development of power grid and power requirements, is conducive to the promotion of the transmission and distribution efficiency, and can correctly guide the power grid investment, more suitable for the construction of power grid in china soon, investment insufficient reality.Secondly,comparison of various transmission and distribution pricing, comprehensive cost pricing method based on cost accounting, can ensure the financial balance of payments and cost recovery,calculation being easy to implement,but can not provide economic signals properly. at the same time, cost sharing is complex, the government pricing in power grid into the recycling as the main goal when the use for this method; marginal cost pricing to provide economic signals and reasonable,but the computational complexity, the need for financial balance adjustment, network high-speed development period of long term marginal cost calculation is not easy to operate in practice, government pricing power resource optimization of multiuse this method as the main goal;short run marginal cost method for price fluctuation, is not good to reduce the stability of the market, general for spot market.Thirdly, comparison of various transmission and distribution cost allocation method, the average allocation method is simple and easy to use, but not a fair degree; the grid based method is more fair and reasonable, but determine the grid using the degree of computational complexity, and given the nonlinear relationship between the electric power system withou unique solution. Various allocation methods have their profits and shortcomings, power flow tracing method is difficult to deal with circulation power problem; selection of distribution factor method exit a choice difficulty in balancing node power; distance in general and are unable to determine the grid level using distribution factor method, the insufficiency and the same; boundary flow law and contract path method, the parallel power flow problem is only applicable to transmission cost allocation in the Internet does not close, inter regional transactions the transmission and distribution cost allocation.Last,the accounting cost pricing method as the foundation, according to each voltage grade power characteristic with obvious order delivery, taking step distribution method application in accounting for cost allocation of each voltage grade of power transmission and distribution cost allocation, it was proposed a voltage applied to the regional power grid transmission and distribution price calculation model and practical method. The method is simple, less data demand, to overcome the traditional voltage level of transmission and distribution price level transfer model of the original data need correction, the original data difficulty to provide in the calculation process, to reduce disputes, better practicability and maneuverability.finally, taking the Wuhai power grid transmission and distribution price calculation example verified that the correctness and validity. |
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