高比例可再生能源接入的输电网结构适应性指标及评估方法

发布时间：2018-10-10 19:56

【摘要】：高比例可再生能源并网和交直流混联电网是未来电力系统发展的基本特征,评估不同输电网结构特别是交直流混联电网结构对源—荷双重波动的适应性,将为未来电力系统经济、安全、可靠、灵活运行奠定基础,但适应性评估难于量化且亟待一套新背景下的评价体系。首先,在分析未来高比例可再生能源接入下输电网基本结构特征的基础上给出了输电网结构适应性的定义;然后,提出一套概率化的输电网结构适应性评价指标体系,并基于蒙特卡洛模拟算法和最优经济模型提出一种实用化的适应性指标计算方法;最后,以IEEE 30节点系统作为基础网架,分别对纯交流和交直流混联电网结构适应性做出评价,同时定量研究了不同因素对结构适应性指标的影响及变化规律。算例证明适应性指标能够有效反映不同输电网结构在高比例可再生能源接入下多方面的适应能力。
[Abstract]:High proportion renewable energy grid and AC / DC hybrid grid are the basic characteristics of power system development in the future. The adaptability of different transmission network structure, especially AC / DC hybrid grid structure, to source-load dual fluctuation is evaluated. It will lay a foundation for the economic, safe, reliable and flexible operation of power system in the future, but the adaptability evaluation is difficult to quantify and needs a set of evaluation system under the new background. Firstly, on the basis of analyzing the basic structural characteristics of transmission network under the access of high proportion renewable energy in the future, the paper gives the definition of structural adaptability of transmission network, and then puts forward a set of probabilistic index system for structural adaptability evaluation of transmission network. Based on Monte Carlo simulation algorithm and optimal economic model, a practical adaptive index calculation method is proposed. Finally, the adaptability of pure AC and AC / DC hybrid power network is evaluated based on IEEE 30-bus system. At the same time, the influence of different factors on the structural adaptability index and its variation law are studied quantitatively. An example shows that the adaptive index can effectively reflect the adaptability of different transmission network structures under the high proportion of renewable energy access.
【作者单位】：电力传输与功率变换控制教育部重点实验室(上海交通大学);国家电网公司华东分部;
【基金】：国家重点研发计划资助项目(2016YFB0900100) 国家自然科学基金重点项目(513370005)~~
【分类号】：TM727

【相似文献】