计及分布式发电的城市电网潮流变化规律研究  

Study on the Change Rules of Power Flow in the Urban Power Grid with Distributed Generation

作　　者：余昆[1,2] 陈星莺[1,2] 陈楷[3] 朱红[3] 韦磊[3] 祝万[1] 

机构地区：[1]河海大学能源与电气学院,江苏南京211100 [2]南京市智能配用电工程技术研究中心,江苏南京211100 [3]南京供电公司,江苏南京210019

出　　处：《电网与清洁能源》2013年第2期5-10,共6页Power System and Clean Energy

基　　金：国家高技术研究发展计划(863计划)项目(2012AA050214);国家自然科学基金项目(51077043);国家电网公司重大科技项目(SGKJJSKF[2011]800)~~

摘　　要：随着风力发电、太阳能光伏发电等分布式电源的并网运行,城市电网的潮流分布更加复杂。通过曲线拟合和特征值比较分析了负荷特性、风力发电和太阳能光伏发电系统出力特性及其对潮流分布的影响。仿真结果表明:城市电网的潮流分布受负荷变化的影响,同时具有规律性和随机性特征,太阳能光伏发电系统接入后会增强潮流变化的规律性,风力发电系统的接入则加大了潮流的随机变化。因此,在对城市电网进行潮流控制时,应同时考虑其变化的规律性和随机性特征。With distributed generations such as wind power generation and solar photovoltaic generation integrated in the power grid, the power flow in the urban power grid is more complicated. This paper, by curve fitting and eigenvalue comparison, analyzes the load characteristics and the output characteristics of wind power generation and solar photovoltaic generation as well as their influences on the power flow. The simulation result shows that power flow in the urban power grid changes with both regularity and randomness under the influence of load changes. The regularity of the power flow change is strengthened by solar photovohaic generation while the randomness is enlarged by wind power generation. There- fore, the characteristics of both regularity and randomness of the power flow change should be considered when measures are taken to control the power flow of the urban power grid.

关 键 词：城市电网 分布式发电 规律性 随机性 

分 类 号：TM711[电气工程—电力系统及自动化]