Yunnan Power System Electricity Price And Coal Linkage Model Study

The research on constructing the model for TOU and SOU pricing entered upon a new phase when the policies of National Development and Reform Commission come on. This thesis contains the following context:(1) Based on the ananlysis of the current research of TOU and SOU pricing model, a new approach that can be used in Yunnan power system to divide the time of TOU based on membership function is presented. The TOU and SOU pricing models are constructed based on the principle that the charge of the user's don't change before and after the implement of TOU price. The data of Yunnan power system is used in the model to compute the price adjustment ratio,and the result is given out in chapter 2.(2) A preliminary discussion on implementing of peak-valley & TOU & SOU price for different industries at demand side is given out in chapter 3 in the context of different respon for different industries when the the TOU price was put into practice with the uniformed price adjustment ratio. A new approach that takes advantege of SOU price elasticity matrix and TOU price elasticity matrix to reflect the response difference of the different industries for price adjustment is presented. The model for TOU and SOU pricing based on the profit funtion and cost funtion was present, and some disscusion about the model was given out at the end of the chaper 3.(3) There is a problem about the unbalanceable behalf between the plants and the power grids, and the problem is not good for the market's stability. A propose that make use of a risk sharing coefficient to distribute the risk at demand side is presented in chapter 4. A time-of-use and season-of-use pricing model at entered-network correspondent to TOU and SOU price at demand side is constructed. The 2005 data of Yunnan power system is used in the model to compute the price adjustment.(4) The fossil-fuel plant will face the burden when the coal price can fluctuate free in the market. The linkage model of the coal price and the entered-network price for fossil-fuel plant was constructed based on the ITO model for coal price accrording to the relationship between the cost of the plant and the coal price. The Government can adjust the plant's entered-network price according to the expected value.(5) The risk difference between the tradional risk manament and TOU price is given out in chapter 6. The risk definition of TOU price is concluded based on the analysis that the time devisions and price adjustment are certain in the implement of TOU price. By the end of the chapter 6, the VAR(valuse at risk) of the market members in Yunnan power system are given out according to the VAR definition.