城市高压配电网接线模式比较研究  

Comparative study of connection modes in high-voltage distribution networks

作　　者：葛少云[1] 郭明星[1] 王成山[1] 尹页秀[1] 林瑞兴[2] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]福建省电力勘测设计院,福建福州350000

出　　处：《电力自动化设备》2004年第2期33-37,共5页Electric Power Automation Equipment

摘　　要：针对城市110kV高压配网的典型接线模式进行了详细分析,给出了一种接线模式比较研究的方法,并依据该方法设计了由单一接线模式构成的网架。然后,在此基础上针对不同负荷密度和不同变压器容量台数的组合,对不同网架结构进行了可靠性和经济性的定量分析比较研究。给出了有指导意义的推荐方案,即在预期负荷密度较低的地区,110kV变电站应考虑设置2台变压器,供电模式建议依据不同情况优先采用双T、双辐射或双π接线模式。在预期负荷密度较高的地区,110kV变电站最终规模应考虑设置3台变压器,供电模式建议依据不同情况优先采用三T或三π接线模式。A detailed analysis of typical connection modes for110kV high-voltage distribution net-work is given and a comparative study method of connection modes is provided.A network frame with single connection mode is designed based on this method.With different combinations of load density and transformer capacity ,the reliability and economy of different networks are studied by quantitative analysis.And useful schemes are proposed.For the areas with low load density ,two trans-formers are suggested for110kV substation ,and double T ,double radial or doubleπconnection mode is suggested according to different conditions.For the areas with high load density ,three trans-formers are suggested for final110kV substation ,and tri-T or tri-πconnection mode is suggested according to different conditions.

关 键 词：高压配电网 接线模式 经济性 可靠性 

分 类 号：TM726.1[电气工程—电力系统及自动化]