电制气技术为电网提供大规模储能的构想

发布时间：2018-08-07 15:26

【摘要】：电制气技术(Pt G)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,Pt G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。
[Abstract]:As a key link of natural gas network and power grid in the energy Internet, (Pt G) can provide an innovative energy storage solution to absorb wind power. New energy and electricity, such as optoelectronics, have unique advantages and adaptability that other energy storage methods can't compare. Based on the analysis of the main components and characteristics of the Pt G technology, it is considered that the technology is feasible, but based on the present development of the technology, The overall efficiency is on the low side (about 60%), and the price of the synthetic natural gas produced is at least 2 or 4 times that of the natural gas price in the market. The economy limits the popularization and application of the technology, and the three factors that have the greatest impact on the product cost are electricity price, respectively. The bottleneck of gas price and the cost of electrolytic hydrogen production unit is the low efficiency and small scale of electrolytic hydrogen production unit. Compared with pumped-storage energy storage, which is the main energy storage mode, Pt-G has shown a certain potential competitiveness in efficiency and profitability from the point of view of power grid safety and efficiency, and has a broad prospect of development and application.
【作者单位】：中海石油气电集团技术研发中心;
【分类号】：TE665.3;TK02

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