基于综合评价的交、直流输电适用范围研究  

Applicable scope of AC and DC power transmission based on comprehensive evaluation

作　　者：夏俊丽[1] 毛荀[2] 柯德平[1] 刘建琴[3] 高艺[3] 孙元章[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]国网安徽省电力公司电力科学研究院,安徽合肥230601 [3]国网北京经济技术研究院,北京100761

出　　处：《电力自动化设备》2015年第3期120-126,139,共8页Electric Power Automation Equipment

基　　金：国家电网公司大电网重大专项资助项目(SGCC-MPLG029-2012)~~

摘　　要：以交、直流输电方式的合理适用范围作为研究对象,基于交、直流输电特性,研究了给定输电需求下考虑受端电网电气强度的各高电压等级交、直流输电方案的快速建立方法。在此基础上,建立了考虑功率传输特性、安全稳定性、经济性等多因素的交、直流输电方式的综合评价指标体系,用以评价交、直流输电方案,并提出了交、直流输电方案的综合优选方法。最后,将所提方法应用于多组典型输电情景,建立交、直流输电方案并进行综合优选。总结得到:随着输电容量增大,所需交流和直流输电电压等级增大,2种输电方式的输电距离临界线也由500 km增大到1000 km。As to the reasonably applicable scope of AC and DC power transmission,a method of fast establishment of AC and DC power transmission schemes with the given transmission requirements is researched according to its characteristics for different electrical strengths of receiving-end grid,based on which,the comprehensive index system for evaluating AC and DC power transmission schemes is established with the consideration of multiple factors,such as power transmission characteristics,security ＆ stability, economy and so on,and a method for selecting the comprehensively optimal scheme is put forward. The proposed methods are applied to some typical power transmission scenarios,the AC and DC transmission schemes are established and the comprehensively optimal one is selected. The conclusion is that the required AC and DC power transmission voltage increases along with the increase of transmission capacity and the critical transmission distance increases from 500 km to 1 000 kin.

关 键 词：交流输电 直流输电 适用范围 综合评价 输电 方案 指标体系 

分 类 号：TM721[电气工程—电力系统及自动化]