【摘要】 经过长时间的电压等级提升、调整和简化,我国电网逐步形成了相对统一的电压序列,对促进我国电网建设和经济社会发展发挥了重要作用,但随着我国城乡经济和电网建设的持续快速发展,我国电网有必要进一步调整和简化电压序列。国家电网公司和南方电网公司先后开展了电压序列优化的综合研究和论证,主要涉及提高中压和简化电压序列2个方面。描述和分析了国内外电压等级、电压序列的发展和应用情况,归纳了发展规律和趋势;着重通过典型案例分析总结了提高中压配电电压的主要方式,可为我国各级电网公司开展电压序列优化工作提供参考。更多还原

【Abstract】 The Chinese power grids have formed relatively uniform voltage series,which have contributed greatly to the development of power grids as well as the economy and society.However,as the economy and power grids keep developing fast,there are spaces and necessities of further adjusting and simplifying voltage series.Therefore,the two grid companies in China conducted comprehensive research on voltage series optimization in the last two years.The development voltage classes and voltage series in China and foreign countries were introduced and analyzed,their evolution laws and trends were generalized,and more importantly,by analyzing typical cases,it summarizes the major modes of improving medium distribution voltage.It can serve as a reference to power grid companies conducting voltage series optimization.更多还原