基于弧垂实时测量的输电线路动态增容决策系统设计  

Design of dynamic power capacity increasing decision system based on the real-time measurement of transmission line sag

作　　者：曾祥君[1] 阳韬[1] 钟卓颖 戴沅[2] 高剑[1] 

机构地区：[1]长沙理工大学智能电网运行与控制湖南省重点实验室,湖南长沙410004 [2]广东电网公司电力科学研究院,广东广州510080

出　　处：《电力科学与技术学报》2015年第2期9-15,共7页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(61233008);湖南省科技重大专项(2012FJ1003)

摘　　要：弧垂是限制输电线路输送容量的主要因素,难以实现在线监测和预测。现有弧垂测量方法普遍存在计算模型较复杂、测量精度不高、不能满足动态增容对弧垂的实时测量要求。为此,利用行波从线路一端传输到另外一端的时间测量线路长度,动态近似计算整条线路的弧垂;并利用超声波测量制约线路增容的局部线段弧垂,通过导线弧垂-载流量计算模型动态计算线路可运行的最大传输容量。最后,设计输电线路动态增容决策系统,可实现安全、准确、实时、有序的输电线路动态增容。The transmission line sag is the main limitation factor of dynamic power capacity increasing,which is difficult to mornitor and forecast online.Traditional sag measurement methods have complex calculation models and low accuracy,they can＇t satisfy the requirement of power capacity increasing.The line length was measured with the transmission time of traveling wave from one terminal to another terminal,and the whole line sag was thus measured in this paper.The ultrasonic measurement was also applied to test the local line sag that limit the power transmission capacity.The line maximum transmission capacity was dynamically calculated by the model of sag-carrying power capacity.Finally,the dynamic capacity increasing decision system of transmission line was designed.It can achieve safely,accurately,real-time and orderly dynamiccapacity increase for the transmission line.

关 键 词：输电线路 动态增容 行波测距 超声波测距 

分 类 号：TM741[电气工程—电力系统及自动化]