风电并网对电力市场需求侧价格响应的影响

发布时间：2018-11-25 10:37

【摘要】：随着全球工业化的不断深入，对化石能源的需求也不断上升。但是，因为化石能源是不可再生能源，同时会对环境造成非常大的污染。所以，大力发展新能源来替代传统能源是大势所趋。风能作为一种绿色清洁且可再生的能源受到了各个国家的青睐。近年来，随着一些大型风力发电场的并网运行，风电对整个电力系统的影响也会越大。通常认为风电的输出功率会对电价产生一定程度的影响，因此，在大型风电场并网后，需要分析风电输出功率的变化将对电力市场中用户的价格响应以及清算价格产生怎样的影响。本文介绍了需求侧响应的基本理论以及电价的基本概念和定价方法，研究的主要内容如下：第一，通过构造短期供给曲线确定现货定价模型，同时从风电供给曲线、常规发电供给曲线得到市场短期复合供给曲线。结合这两个方面，研究风电供应与电力现货价格的关系，，论证了风力发电是如何影响电力市场短期供给曲线，从而进一步的影响到市场的每个小时的价格。第二，建立一个电力需求价格响应的模型，使用电力需求的交叉价格弹性系数和自身价格弹性系数来使模型参数化，同时对一系列的情况进行详细的分析。重点是对价格的短期影响进行分析。第三，模拟和分析了负荷时间序列和价格之间不断地调整直到最后平衡的过程，研究了风电上网对于负荷和市场清算价格的影响。最后，以算例形式模拟分析了某电力系统一天内负荷对价格的响应行为。综上所述，本论文研究解决的问题对于增强社会对风力发电的认识，完善风电等新能源发电项目的技术经济评价理论，促进我国新能源发电事业健康持续发展具有重要的理论与实践作用。
[Abstract]:With the deepening of global industrialization, the demand for fossil energy is also rising. However, because fossil energy is non-renewable energy, at the same time will cause great pollution to the environment. Therefore, the development of new energy to replace traditional energy is the general trend. Wind energy as a kind of green clean and renewable energy has been favored by all countries. In recent years, with the grid-connected operation of some large-scale wind farms, the impact of wind power on the whole power system will become greater. It is generally believed that the output power of wind power will have a certain effect on the electricity price. Therefore, after the large-scale wind farm is connected to the grid, It is necessary to analyze how the change of wind power output will affect the price response and liquidation price of consumers in the electricity market. This paper introduces the basic theory of demand-side response and the basic concept and pricing method of electricity price. The main contents of the study are as follows: first, the spot pricing model is determined by constructing short-term supply curve, and the spot pricing model is determined by wind power supply curve. Conventional power supply curve to obtain the market short-term composite supply curve. Combined with these two aspects, this paper studies the relationship between wind power supply and spot price of electricity, and demonstrates how wind power generation affects the short-term supply curve of electricity market, thus further affecting the price of every hour of the market. Secondly, a model of electricity demand price response is established. The cross-price elasticity coefficient of electricity demand and its own price elasticity coefficient are used to parameterize the model. At the same time, a series of situations are analyzed in detail. The emphasis is on the analysis of the short-term impact of prices. Thirdly, the process of adjusting load time series and price to the final equilibrium is simulated and analyzed, and the influence of wind power access on load and market clearing price is studied. Finally, the response behavior of a power system load to price in one day is simulated and analyzed by a numerical example. To sum up, the problems studied and solved in this paper can enhance the society's understanding of wind power generation and improve the theory of technical and economic evaluation of new energy generation projects, such as wind power. It is important to promote the healthy and sustainable development of new energy power generation in China.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：F426.61;TM614

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