高压直流融冰的地线节能改造研究  

The Ground Wires Energy-saving Alteration Researd of High Voltage DC-melting

作　　者：杨金东[1] 孙鹏[1] 何蕊华 

机构地区：[1]昆明理工大学云南电网公司研究生工作站,昆明650217 [2]云南电网电力研究院,昆明650217

出　　处：《科学技术与工程》2012年第25期6470-6475,共6页Science Technology and Engineering

摘　　要：为了配合输电线路架空地线直流融冰和减小架空地线的电能损耗,提出了架空地线绝缘化改造的方法;为了精确评估节能改造效果,提出了分段、分型号的实用的工程计算方法。PSCAD程序可以精确地计算出架空地线与输电线路耦合后的阻抗矩阵,提高了数值计算的精确度,并用PSCAD程序仿真了绝缘化改造后不同接地方式下的入地电流值,仿真结果证明了该节能措施的有效性。To be suitable for the overhead ground wires DC melting and reduce the energy loss of the overhead ground wires, overhead ground wire insulation alteration approach is advanced. To accurately assess the energy sav- ing effect, engineering calculation is putted forward by different line segment and type. PSCAD program can accu- rately calculate the impedance matrix of overhead ground wire and transmission line coupling, the precision of nu- merical calculation is improved and the current value under different grounding ways is simulated, the simulation results show that the energy-saving measure is effective.

关 键 词：直流融冰 地线损耗 绝缘化改造 

分 类 号：TM744[电气工程—电力系统及自动化]