电制气技术为电网提供大规模储能的构想  

The idea of providing large scale energy storage for power grid by PtG process

作　　者：宋鹏飞 侯建国 姚辉超 谢旭光 曹婧 王秀林 高振 

机构地区：[1]中海石油气电集团技术研发中心,北京100007

出　　处：《现代化工》2016年第11期1-6,共6页Modern Chemical Industry

摘　　要：电制气技术（PtG）作为能源互联网中联通天然气网和电网的关键技术环节,可提供一种创新的储能解决方案,在消纳风电、光电等新能源电力方面具有其他储能方法无法比拟的独特优势和适应能力。经过对Pt G技术主要构成和特点的分析,认为技术上是可行的,但基于该技术目前发展现状,整体效率偏低（约60%）,制得的合成天然气产品价格至少是市场天然气价格的2～4倍以上,经济性限制了技术的推广应用;对产品成本影响最大的3个因素分别是电价、气价和电解制氢装置费用,经济性问题的瓶颈在于电解制氢装置的效率低和规模小。从电网安全、高效的角度分析,PtG与目前作为主要储能方式的抽水蓄能相比较,在效率和盈利生存能力方面初步显现出一定的潜在竞争力,有广阔的发展和应用前景。As one of the key technologies in China Unicom＇s natural gas network and power grid, PtG can provide an innovative energy storage solution due to its great advantages over other new energy storage methods in the fields of wind power and photovoltaic power. The main components and characteristics of PtG are analyzed, indicating the technical feasibility. The existing problems of PtG are also pointed out, such as low overall efficiency （ only about 60% ） and the resultant high market price （ 2 - 4 times of natural gas）. The economic cost is the most important factor affecting the wide application of this technology, which mainly lies in the low efficiency of the electrolysis hydrogen production unit and small-scale device. From the point of view of grid security and efficiency, PtG shows preliminary potential competitiveness in terms of efficiency and profit survivability, and has broad development and application prospect, compared with the existing pumped storage system.

关 键 词：电制气 能源互联网 储能 甲烷化 

分 类 号：TM91[电气工程—电力电子与电力传动]