辽宁电网风电接纳能力研究

发布时间：2018-01-03 22:18

本文关键词：辽宁电网风电接纳能力研究　出处：《华北电力大学》2015年硕士论文　论文类型：学位论文

【摘要】：面对日益增长的能源需求与日益减少的化石能源储量,加之减排带来的压力,发展新的清洁能源成了当务之急。在众多新能源中,以目前技术水平,风电是最有可能大规模应用的新能源。但是风力发电存在波动性和不确定性,大规模应用必将会对电网安全运行带来隐患。因此,计算电网的风电接纳能力成了电源规划一个迫切需要解决的问题。本文首先介绍了风力发电的原理、风电并网运行的技术规范。通过对辽宁风资源、风力发展现状的分析,确定辽宁发展风电有自己得天独厚的条件。在分析影响风电接纳能力因素的基础上,提出了考虑电网调峰约束的风电接纳能力模型。结合辽宁电网的电源结构、负荷特性,计算了辽宁电网的风电接纳能力。结合辽宁电网的实际情况,仿真分析了抽水储能电站容量、供热机组比例和负荷峰谷差对风电接纳能力的影响。结果表明为了增加风电接纳能力,辽宁电网可以增加抽水储能电站的容量、减少供热机组的占比以电制热代替热电厂供热、实施峰谷分时电价以及电动汽车有序充电控制。最后在相对安全的原则下,为了更近一步挖掘电网的风电接纳能力,提出了在电网调节困难的时候允许限制部分风电出力的风电接纳能力计算方法。该方法允许在电网调节困难时刻限制部分风电出力,从而提高风电装机容量,进而增加在电网非困难时期的风力发电量。算例分析表明,新的计算方法可以大幅度提高风电在电网中规划容量。虽然在电网调峰困难时期限制部分风电出力,但全时段来看,风电发电量较之前有大幅度提升。
[Abstract]:In the face of increasing energy demand and decreasing fossil energy reserves, combined with the pressure of emission reduction, the development of new clean energy has become an urgent task. Wind power is the most likely large-scale application of new energy, but wind power has volatility and uncertainty, large-scale application will inevitably bring hidden dangers to the safe operation of the grid. The calculation of the wind power acceptance capacity of the power grid has become an urgent problem to be solved. Firstly, this paper introduces the principle of wind power generation, the technical specifications of wind power grid operation. Through the wind resources in Liaoning Province. Based on the analysis of the current situation of wind power development, it is determined that Liaoning has its own unique conditions for wind power development. A wind power capacity model considering peak load regulation constraints is proposed. Combined with the power supply structure and load characteristics of Liaoning power network, the wind power acceptance capacity of Liaoning power network is calculated, and the actual situation of Liaoning power network is considered. The effects of capacity of pumping energy storage power station, ratio of heating unit and load peak and valley difference on wind power acceptance capacity are analyzed by simulation. The results show that Liaoning power network can increase the capacity of pumping energy storage power station in order to increase the capacity of wind power plant. In order to reduce the proportion of heating units, electric heating instead of thermal power plant heating, the implementation of peak-valley time-sharing price and electric vehicle charging control orderly. Finally, under the principle of relative safety. In order to further explore the wind power grid acceptance capacity. In this paper, a calculation method of wind power capacity is proposed, which can limit the output capacity of part of wind power when it is difficult to adjust the power grid, which allows to limit the output capacity of part of wind power in the difficult time of power grid regulation, thus increasing the installed capacity of wind power generation. The example analysis shows that the new calculation method can greatly improve the capacity of wind power in the power network, although some wind power generation is limited in the difficult period of peak regulation. But all-time point of view, wind power generation has a substantial increase than before.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM614

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