西北地区抽水蓄能电站稳定运行的设计措施

Design measures for the stable operation of pumped storage power stations in Northwest China

西北地区得天独厚的新能源大规模发展是助力“双碳”目标实现的主力军,新型电力系统中迫切需要建设抽水蓄能电站以提高电力系统调节能力,按照全国中长期抽水蓄能规划重点实施项目总装机规模4.21亿kW,其中西北地区近1亿kW,抽水蓄能电站将成为西北地区新能源高质量发展的重要支撑。可逆机组技术参数的选型设计对机组的安全稳定运行影响重大,本文从电站设计者的角度出发,对抽水蓄能电站的水头变幅与抽发比、额定水头与机组稳定性、比转速与转轮尺寸、叶栅选择与动静干涉、防沙措施与过机泥沙等问题进行剖析,希望对加快西北抽水蓄能电站高质量建设提供一定的帮助。

Northwest unique new energy large-scale development is the main force of power double carbon goal,the new power system of pumped storage power station to improve the construction of power system regulation ability,according to the national medium and long-term storage planning key implementation project total installed capacity of 421 million kw,nearly 100 million kw in northwest China,pumped storage power station will become the important support for the developlment of new energy of high quality in northwest China.Reversible unit technical parameters of selection design of the safe and stable operation of the unit,this paper from the perspective of the plant designer of the pumping plant head amplitude,and pumping ratio,rated head and unit stability,specific speed and runner size,grid selection and dynamic interference,sand measures and machine sediment analysis,hope to speed up the northwest,pumped storage power station high quality construction to provide some help.