Multi-approach And Optimization Model For Accommodating China’s Curtailed Wind Power

Since2005, the wind power industry in China has expanded rapidly. China has91744.6cumulative megawatts of wind capacity by the end of2013and more than any other country in the world. Most wind power installed capacity are distributed in Northeast China, North China and Northwest China, which are far from the load center and shows the characteristics of large-scale construction. The geographic distribution characteristics of wind power influence its consumption level to some extent. In2013, the abandoned quantity of wind power electricity reached15billion kWh, losing7.5billion yuan. On the macro stuff, the severe wind power abandon condition goes against sustainable development of wind power, hinders the adjustment pace of power structure and influences low-carbon development of China’s economy. On a microscopic level, this condition is bad for the economic benefit realization of wind power project and it will make power project developers hard to reclaim their investment cost.Wind power consumption is a global issue that western countries all do reach about wind power consumption actively. At the policy level, there comes wind power industry development programs and relevant incentive policies; in the aspect of economy, favorable electricity price and tax strategy are given; at the social level, coordinating dispatch between peaking power sources and wind power is encouraged, which guides the shift of social electricity demand; at the technical level, many countries actively develop compressor blower&fan technology, wind power prediction technology and wind power dispatching technology. These aspects are not independent, and they can make different combinations to study how to optimize wind power consumption approach. This article focuses on the problem about wind power consumption, and on the basis of China’s wind power industry development situation, it also highlights the abandoned wind’s influence on wind power project, wind power’s combinatorial optimization consumption under the help of demand side, generation side and both of them.Considering the abandoned wind power’s economic influence on wind power projects and different wind power resources under different electricity price levels and different utilization hours, this article calculates capital profit margin, dynamic investment pay-back period and internal rate of return. The results show that economic benefit in wind power resource-rich areas is lower than other areas under the present distribution condition of abandoned power. In the future, China will reduce its wind power project investment in wind resource-rich areasConsidering wind power’s combinatorial optimization under the help of demand side, this article pays attention to large consumers’help, power transmission and time-of-use electricity price, and studies on three wind power consumption ways’ influence on the consumption. The results show that the implementation of consumption ways of demand side contributes to enlarge wind power’s consumption ability. And along with further study on demand side, the consumption level will improve. In addition, the study shows that combinatorial optimization of consumption ways could further the consumption level of wind power.Considering wind power’s combinatorial optimization under the help of demand side, this article first analyzes the influence which wind electricity exerts on thermal power after wind power is linked into power grid and the influence which thermal power’s participation in peak-shaving on the abandoned wind power. And the economic compensation model which is supported auxiliary service by thermal power is built. Besides, focusing on energy storage systems’effect on consumption and the two consumption ways by the existing carbon trading mechanisms, the study shows that the introduce of generation side is beneficial to solve the problem of abandoned wind power. Eventually, the paper combines energy storage system and carbon trading mechanism, and studies the abandoned wind power under their functions. The optimization results shows that combinatorial optimization way has the value to deepen wind power consumption.Considering the combinatorial optimization between demand side and generation side, this paper first analyzes the power generation performance of thermal power for wind load under the participation of the demand side, and the results show that the participation of the demand side is conducive to optimize generating efficiency of generation side. This article further studies the level of wind power consumption under three joint optimization of demand side and generation side scenarios:the conbination of lager users and energy storage systems, the conbination of power delivery systems and energy storage systems, the conbination of TOU and carbon trading mechanism. And the results show that the combinatorial optimization between demand side and generation side consumption ways has contributed to enlarge the consumption level of wind power.In the aspect of comprehensive assessment about choosing wind power consumption ways, integrative efficiency evaluation index system of wind power projects is built in different consumption ways from economic, environmental and social degrees. And the article employs partial fuzzy comprehensive evaluation method and comprehensive evaluation method of extension nature of matter element, and uses the two methods to analyze comprehensive benefits of wind power projects under the condition of energy storage systems, outside electricity order and large consumers direct purchasing.