And Net Power Plant Auxiliary Services Research

Auxiliary service is a necessary measure needed for satisfaction of safe and economic operation of electric power system, and for assurance of power supply quality. In the power market, it is actively required to adopt the economic measures to ensure the stability of power system, in order to avoid the instability caused by pursuing economic benefit unilaterally. The market operating and managerial department has to purchase the auxiliary service from IPP (Independent Power Producer) and then control the auxiliary service uniformly. The auxiliary service actually belongs to a kind of commodity; therefore, it has to pay for the usage with economic considerations. In additional, the cost, profit, price, optimization of the benefit of entire system, and other issues have to be considered comprehensively.On the basis of particular analysis for compositions and fundamental principles of power market, the auxiliary service provided by grid-connected power plants is researched in detailed, integrated with the Interim Provisions for the Administration of Auxiliary Service by Grid-Connected Power Plants published by the State Electricity Regulatory Commission.1. The auxiliary service is classified, and the function of each kind is explained. The auxiliary service is mainly used to guarantee the stability and quality of power supply. But in the power market, it has been endued with new content. The obtain of auxiliary service has no longer been subordinated to the unified dispatch of the entire system, as the price fixing becomes the most participants' concerned issues. Therefore, in this test research is made towards the obtaining and price fixing of auxiliary service, and the obtaining and price fixing measures for Chinese power market while at the premier stage are achieved. Since the auxiliary service is a kind of commodity substantially, it has to pay for the usage with economic considerations, at the same time the cost, profit, price, optimization of the benefit of entire system, and other issues have to be considered comprehensively. Accordingly in this test, the price fixing and cost recovering mechanisms are discussed.2. The effect of active power frequency control in the power system is introduced, together with the frequency standard and evaluation. Combining with the practical situation of Yunnan Power Grid Corporation, the suitable AGC service competitive bidding mode is selected. Meanwhile, on the base of the existing AGC service payment means, the improving method more suitable for AGC service of auxiliary provided by grid-connected power plants inside Yunnan power grid is raised.3. In accordance with the influence to active power output and income when taking the power generator as reactive power source, the reactive power operating market of auxiliary service is analyzed in detailed. Then a brand new price fixing method, combined with a few existing methods, for reactive power is raised.4. The auxiliary service market mode, measurement and payment of Yunnan power grid, and the charging standards of all kinds of auxiliary service of grid-connected power plants are discussed systematically, as well as the regional power market decision-making management system of East China, which is with the use for reference for the establishment of auxiliary service decision-making management system of grid-connected power plants in Yunnan power grid.