含高比重可再生能源电力系统的功率波动性给电网的安全可靠运行带来了巨大挑战,采有何种方法平抑可再生能源发电的功率波动性,保证电网的安全经济运行已成为世界各国研究的重点.本文在对以风能和太阳能为主的可再生能源发电功率波动性、高耗能负荷的调节特性、以及天然气和石油管网特性进行详细调研的基础上,提出了平抑含高比重可再生能源电力系统功率波动性的总体思路.结合我国能源资源发展和负荷分布的特点,提出通过转移中东部地区的高耗能负荷至可再生能源发电集中开发的西北部地区,并开发高耗能负荷潜在的功率调节能力,实现大规模可再生能源发电的部分就地消纳和波动性在电网送端的平抑.提出在可再生能源分布式利用的电网受端,利用天然气管网和石油管网与电网混合运行,构建家庭和商业混合用能系统,实现分布式可再生能源发电功率波动性在电网受端的平抑.在此基础上,论文详细阐述了在电网送端平抑可再生能源集中发电功率波动性的原理以及在配网侧平抑可再生能源分布式发电功率波动性的原理,并评估了两种方式平抑可再生能源功率波动性的潜力.
The power fluctuation of power system with high proportion of renewable energy and its access have caused a huge challenge to the safe and reliable operation of the power grid. What kind of method should be adopt to stabilize the power fluctuations of renewable energy generation and what to do to ensure the safe and economic operation of power grid have become the focus of research in the world. On the basis of the detailed investigation and study over the power fluctuation of renewable energy based on wind and solar energy, high energy consumption load regulation characteristics, as well as natural gas and oil pipeline network characteristics, this paper puts forward the general idea about stabilizing the high proportion of renewable energy power fluctuation in China. The idea considers the conentrated renewable energy and the distributed renewable energy. First, considerding the concentrated renewable energy. Combined with the characteristics of China's energy resource development and load distribution, a strategy of transferring high energy consumption load from eastern region to western and northern regions where renewable energy are developed centrally is put forward in this paper. The high energy consumption load such as electrolytic aluminium which was thought had no contribution to the satability of frequency before have developed a new role in this paper. The potential power regulation capability of high energy consumption load is developed to achieve the partly in-situ consumption and the stabilization of fluctuations of the large-scale renewable energy power generation. On the other hand, considering the distributed renewable energy. The method by combining power grid with natural gas pipeline network and oil pipeline network at the receiving-end of power grid of renewable energy distributed utilization is proposed to build the household and commercial hybrid energy system. This system mentioned above can achieve the stabilization of power generation fluctuation at the receiving-end of the power grid