A Study On The Pattern Of The Direct Power-Purchase For The Large User In China

With the development of our country's power market, the marketing reform of power generation side was started, and it has obtained some effect. But to the supply side, it remains monopoly. For breaking up the monopoly, the government promulgated some policies, in which power generation companies is permitted to sell electricity to large user under some conditions.Under this circumstance, this article studies the direct power purchase for the large user. This article combines foreign country's experience with our country's facts, analyzes the relation between the four running patterns of power market and the direct power-purchase for the large user. In the core part, this article uses the limit competitive theory to find out why the traditional pattern can exist, then tells the feasibility of breaking monopoly on the supply side; introduces some trials of the direct power-purchase for the large user in China; discusses the trade pattern of the direct power-purchase for the large user, basing on the goal of reducing generation company's market power, and takes the secure problem of the electrical net as well, this article gives a proper pattern which would be fit for our country now; uses game theory to demonstrate the positive effect which middle and long term contract made in reducing generation company's market power; uses Rubinstein Bargain Model to establish a mathematics model of single large user bargain with single generation company; studies on the proper pattern of power transmission; classifies the wheeling service into three parts and introduces how to charge every part of them, stresses on the charge of transmission power, bases on the comparison of some methods adopted by both domestic and foreign people, gives specific methods under different electrical net circumstances.The study and its conclusion in this article on the direct power-purchase for the large user in power markets enables people to have a further knowledge of the direct power-purchase for the large user and will provide a benefitable reference to the extensive application of the direct power -purchase for the large user in China.