摘要
对作为电网负荷中心的城市电网的供电能力进行在线评估具有非常重要的意义。文章借鉴国内外对城市电网进行在线评估的方法,详细定义了网络节点,提出了用邻接矩阵描述城市配电网络结构、以直流潮流模型为基础的线性规划方法,并编写了相应的程序计算城市电网最大供电能力。该程序以SCADA数据库为基础,实时读取数据库中相应节点和线路的相关数据,并可将计算信息发布于电网公司实时信息主页上。通过比较文中程序的计算结果与BPA的计算结果,验证了该方法的准确性和有效性。
It is of significance to make online evaluation of power supply ability of urban power network that is regarded as the load center of power network. Drawing lessons from online evaluation of urban power network home and abroad, the network node is defined in detail; and a linear programming method which is based on the DC power flow model and describes the structure of urban power network by adjacency matrix is proposed, and the program to calculate the utmost power suppler ability of urban power network is complied. This program is based on SCADA database and accesses the related data of corresponding nodes and transmission lines in the database in real-time mode, and the information from calculation results can be distributed on the real-time information homepage of power network company. Comparing the calculation results by the proposed program with that by BPA, the accuracy and effectiveness of the proposed method are verified.
出处
《电网技术》
EI
CSCD
北大核心
2008年第9期46-50,共5页
Power System Technology
基金
国家自然科学基金资助项目(90610024
50467002
50347026)
云南省科技攻关项目(2003GG10)
云南省自然科学基金资助项目(2005F0005Z
2004E0020M
2002E0025M)~~
关键词
城市电网
最大供电能力
在线评估
SCADA数据库
线性规划
urban distribution network
utmost power supply ability
online evaluation
SCADA database
linear programming
