摘要
在规划与改造城市中压配网时,需要根据实际情况选取一种或几种典型接线模式作为网架改造标准。计算各种典型接线模式在特定负荷密度下的可靠性与经济性指标,由此确定该负荷密度下各接线模式的最优分段数,然后基于此最优分段数在各种负荷密度下对各种接线模式进行比较,综合确定典型接线模式。按照上述规则,5 MW/km2、30 MW/km2和80 MW/km2时的最佳接线模式分别为手拉手环式、两供一备式与分段两联络式。
It is necessary to set up a certain typical connection modes as standards for reconstruction of the urban medium-voltage distribution network,and these modes should meet the urban situation.To set up the standard modes,this paper evaluates the reliability and economics indices of various typical modes under specific load density with calculations to determine the optimal sub-section numbers,then with the numbers these typical modes are compared under various load densities to comprehensively determine a standard one.With the method the optimal connection modes for the load densities of 5 MW/km2,30 MW/km2 and 80 MW/km2 are found to be the hand-in-hand mode,two-supply one-spare mode and section with two-in-connection mode respectively.
出处
《南方电网技术》
2011年第1期57-60,80,共5页
Southern Power System Technology
关键词
城市中压配电网
接线模式
可靠性评价
经济性评价
最优分段
urban medium-voltage networks
connection mode
reliability evaluation
economics evaluation
optimal sub-section
