110kV/3kA高温超导电缆输电网络接入运行特性仿真计算与分析  

Simulation and Analysis on the Operational Characteristics of the Power Transmission Lines with a 110kV/3kA High Temperature Superconducting Cable in a Meshed Grid

作　　者：陈晓宇[1,2] 诸嘉慧[2] 方进[1] 丘明[2] 栗会峰[1,2] 

机构地区：[1]北京交通大学电气工程学院,北京100044 [2]中国电力科学研究院,北京100192

出　　处：《电工技术学报》2016年第16期7-15,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学青年基金(51207146);国家电网公司科技项目(SGKJKJ[2010]374号;DG71-11-009和DG71-13-004);The Royal Academy of Engineering International Exchange Scheme;UK(5502)资助

摘　　要：随着城市电力需求的不断增长以及提高电网运行安全和对环境保护的要求,传统输电网络已不能完全满足城市供电的需求,高温超导(HTS)电缆的发展为解决这些矛盾提供了可能,可以应用在那些受制于地形和安全因素而不能建造架空线路的地区,以满足负荷需要。基于高温超导材料的临界特性,利用Matlab搭建了高温超导电缆失超后的暂态模型,基于PSCAD/EMTDC建立了一个110k V/3k A的冷绝缘高温超导电缆的仿真模型,并将超导电缆模型接入一个110k V的三端环网式电力网络,模拟了外部短路故障对超导电缆线路的影响,并对高温超导电缆和普通线路的功率分布进行了比较。结果表明,高温超导电缆具有更大的短路容量,更有利于电网电压稳定和调节。With the growing requirements for the electricity, the security of grid and the environmental protection, the traditional transmission system can hardly meet the needs of urban power supply. The high temperature superconducting （HTS） cable has a possibility to solve these problems, because it can be applied to the extremely small areas or the places where the overhead lines fail to be built due to the security and environmental concerns. In this paper, a simulation model of 110kV/3kA cold dielectric HTS cable is built in PSCAD/EMTDC based on the critical characteristics of the HTS cable, where the quench effects are calculated by Matlab. An external short-circuit fault is simulated in a 110kV HTS transmission line. And then the power flow distributions with and without HTS cable are compared. The results show that the HTS cable has greater short-circuit capacity, and is beneficial to the power grid voltage stability and regulation.

关 键 词：高温超导电缆 三端环网 潮流分布 短路故障 PSCAD/EMTDC 

分 类 号：TM711[电气工程—电力系统及自动化] TM726.4