一种新的架空输电线路安全限距计算模型  

A New Model to Calculate Security Limited Distance of Overhead Transmission Line

作　　者：陈锡阳[1] 王艳玲[2] 黄河[3] 张国立[2] 马燕鹏[2] 

机构地区：[1]广东电网公司东莞供电局,广东东莞523000 [2]华北电力大学数理学院,河北保定071003 [3]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力科学与工程》2015年第2期60-65,共6页Electric Power Science and Engineering

摘　　要：为了充分发挥输电线路的传送能力、减小系统限电规模,在保证线路安全运行的基础上,达到提高经济效益和社会效益的目的,针对架空输电线路安全限距计算方法进行了研究,指出现有安全限距计算模型的不足,推导建立了一种新的限距计算模型,给出了求解安全限距的循环迭代算法。针对4种典型情况设计仿真实验,比较研究了现有安全限距计算模型和所提出的限距模型。算例结果表明:所建立的限距模型更精确,所提算法是可行的、有效的,可为发挥线路最大输送容量、科学调度提供决策参考。In order to give full play to the transmission capacity of transmission lines, reduce the electricity supply limitation size, and achieve the purpose of promoting economic and social benefits on the basis of guaranteeing the safe operation of the lines, the research in view of the overhead transmission line security limited distance calcula- tion method is conducted. As the limitation of the existing security limited distance calculation model is pointed out, a new mathematical model is established, and a corresponding calculation method of loop iteration is given out to calculate security limited distance accurately. Then the difference between the traditional model and newly estab- lished model is studied and compared according to four typical cases. Numerical example results show that the new- ly established model is more accurate than existing model, and the proposed algorithm is feasible and effective. This model can provide decision reference for taking maximum capacity of transmission lines and scientific schedu- ling.

关 键 词：架空线路 弧垂 安全限距 跨越 循环迭代 

分 类 号：TM726[电气工程—电力系统及自动化]