Research On Wind Power On-grid Price Regulation And Its Market Operation Mode

Wind power cannot get a reasonable investment rate of return(IRR) with the benchmark price regulation at present, which will hinder capital to enter the wind power market. Due to the intermittent and fluctuation of the real-time output, large-scale wind power access to the power system will make the scheduling inconvenience that impacts the transmission company's willingness to accept wind power. How to quantify the impact of large-scale wind power fluctuation to the system has become the focus of the research. It can be proved by the NPV method of the project investment decision that wind plant in China is not profitable. What's more, the benchmark price will be adjusted according to the same IRR with the general thermal plant. This article proposes a real-time pricing regulation method for the wind power on-grid which quantifies the fluctuation of real-time output as an award factor. If the output stability is better than the average, the wind plant can get a price higher than the benchmark one, otherwise, it will get a lower price. This regulation method can incentive the wind farm to increase hardware and software investments to get a more stable output, since the award factor includes competitive factors with similar units, it may help improve the wind power capacity to adapt to the electricity market. Power market is in it's generation competitive mode now with 10% to 15% of the power joining in real-time auction, with the improvement of the direct purchase and the electricity market's daily improving, it will enter the wholesale competition model. As an emerging market participant, the wind power should be consumed all in the real-time market determined by its instability and external features which will be bound to affect market clearing price and unit output. In this paper, the influence of output and the market clearing price for the conventional unit caused by wind power will be simulated by the Matlab program. The results showed that the real-time output of conventional units decrease, and the market clearing price reduced. In order to maintain the relative stability of the electricity market to reduce the loss of auction business, the paper proposes a more reasonable payment market rules with wind.