【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。更多还原

【Abstract】 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 calculation 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 established model is studied and compared according to four typical cases. Numerical example results show that the newly 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 scheduling.更多还原