中国电力 ›› 2015, Vol. 48 ›› Issue (1): 115-120.DOI: 10.11930.2015.1.115

• 电网 • 上一篇    下一篇

220 kV变电站10 kV直供负荷的改善措施及其经济分析

张巧霞1,畅刚2,肖峥1,曹晓庆1   

  1. 1. 武汉供电设计院有限公司,湖北 武汉 430032;
    2. 国网武汉供电公司,湖北 武汉 430014
  • 收稿日期:2014-09-10 出版日期:2015-11-25 发布日期:2015-11-24
  • 作者简介:张巧霞(1969—),女,河南郑州人,高级工程师,从事电网规划设计及技术管理工作。E-mail: 359268730@qq.com

Improvement Measures and Economy Analysis on 10 kV Direct Power Supply Load from 220 kV Substations

ZHANG Qiaoxia1, CHANG Gang2, XIAO Zheng1, CAO Xiaoqing1   

  1. 1. Wuhan Electric Power Design Institute, Wuhan 430032, China;
    2. State Grid Wuhan Power Supply Company, Wuhan 430014, China
  • Received:2014-09-10 Online:2015-11-25 Published:2015-11-24

摘要: 为了协调220 kV与110 kV变电站布点关系,结合某省220 kV变电站三卷变压器10 kV低压侧直接向负荷供电(简称直供)的实际情况,对全省220 kV变电站进行统计分析,研究其直接供电的现状及运行中反映的问题,并有针对性地从技术和经济层面提出解决办法:对10 kV直供负荷供电时,将配电网规划和10 kV直供负荷相结合,优化配电网的结构,合理利用220 kV变电站的容量,由220 kV变电站向周边10 kV负荷系统直接供电,在确保供电可靠性的情况下,控制10 kV线路的送电距离。以上措施可挖掘现有电网的供电潜能,降低线路损耗,使电网布局更趋合理。

关键词: 电力系统, 配电网规划, 220 kV变电站, 10 kV低压侧, 直供负荷, 电能质量, 技术经济分析, 技术改进措施

Abstract: In order to coordinate the locations of 220 kV and 110 kV substations, a statistic analysis is made of the 220 kV substations based on the direct power supply situation from the 10 kV side of the 220 kV three-volume transformers in a province. The existing problems of direct power supply are studied and corresponding solutions are proposed from both technical and economic aspects. The solutions include: combining the distribution network planning with the 10 kV direct supply loads, optimizing the structure of the distribution system, reasonably utilizing the capacity of 220 kV substations, direct supplying power to the nearby 10 kV load system from the 220 kV substations, and controlling the delivery distance to ensure the system reliability. The above-said solutions can exploit the potential of the existing power network, decrease the line power loss, and make the distribution of the power grid more reasonable.

Key words: power system, distribution network planning, 220 kV substation, 10 kV low voltage side, direct supply load, power quality, techno-economic analysis, technical improvement measures

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