arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1802.01623physics.soc-ph
收藏

简化的高度可再生中国电网的成本优化设计

Cost-optimal design of a simplified highly renewable Chinese electricity network

Hailiang Liu, Gorm Bruun Andresen, Martin Greiner

摘要:

中国经济的快速增长导致该国能源需求不断增加。结合中国的排放控制和清洁空气倡议,它导致了领先的可再生能源技术,风能和太阳能的大规模扩张。然而,它们的间歇性和不均衡的地理分布提出了一个问题,即如何在未来的可持续电力系统中最好地利用它们,在那里,它们的综合产量可能远远超过所有其他技术。众所周知,连接遥远的地区提供了更有利的风能和太阳能生产模式。另一方面,长距离连接挑战传统的地方能源自主权。本文对中国省际互联互通的优势进行了量化分析。为此,引入了两种不同的方法。第一个目标是逐步增加异质性,即非本地风能和太阳能发电,以尽量减少生产成本,而不考虑生产与需求之间的匹配。第二种方法优化了低成本生产和高能源利用价值之间的权衡。在这两种情况下,对100%可再生中国电网的研究都是基于8年的高分辨率风能和太阳能发电时间序列以及每个省份的电力需求。从研究中我们得出结论,与均匀分布的可再生能源容量的基线设计相比,异构网络不仅降低了资本投资,而且减少了热力机组的备用调度。在内蒙古,江苏,海南和西北地区等省份安装更多容量,异构布局可以将电力成本(LCOE)降低27%,并将备份需求减少64%。

英文摘要:

Rapid economic growth in China has lead to an increasing energy demand in the country. In combination with China's emission control and clean air initiatives, it has resulted in large-scale expansion of the leading renewable energy technologies, wind and solar power. Their intermittent nature and uneven geographic distribution, however, raises the question of how to best exploit them in a future sustainable electricity system, where their combined production may very well exceed that of all other technologies. It is well known that interconnecting distant regions provides more favorable production patterns from wind and solar. On the other hand, long-distance connections challenge traditional local energy autonomy. In this paper, the advantage of interconnecting the contiguous provinces of China is quantified. To this end, two different methodologies are introduced. The first aims at gradually increasing heterogeneity, that is non-local wind and solar power production, to minimize production costs without regard to the match between production and demand. The second method optimizes the trade-off between low cost production and high utility value of the energy. In both cases, the study of a 100% renewable Chinese electricity network is based on 8 years of high-resolution hourly time series of wind and solar power generation and electricity demand for each of the provinces. From the study we conclude that compared to a baseline design of homogeneously distributed renewable capacities, a heterogeneous network not only lowers capital investments but also reduces backup dispatches from thermal units. Installing more capacity in provinces like Inner Mongolia, Jiangsu, Hainan and north-western regions, heterogeneous layouts may lower the levelized cost of electricity (LCOE) by up to 27%, and reduce backup needs by up to 64%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑