变电站内短路工况下软导线拉力研究

Research on Flexible Lead Tension under the Working Condition of Short Circuit Inner Transformer Substation

随着中国企业电力工程的国际承包业务逐渐增多,国内规范与国际规范的差异也日趋凸显。在这些差异中,短路工况下软导线拉力是否需要作为构架设计中的重要工况考虑便是国际工程中需要关注的问题之一。依据IEC60865标准,以500k V配电装置为例,对短路工况下软导线拉力进行了计算研究,将基于IEC标准的计算结果通过与国内标准的比较,给出短路电动力是否需要考虑入构架设计的合理化建议。

As Chinese electrical companies are contracting more and more international project,the differencesbetween Chinese standards and foreign standards are increasingly evident and should be paid more attention.Amongthem,whether considering tensile force of flexible conductor under short-circuit condition as significant factor ingantry design is a problem which needs to be concerned.According IEC60865,taking500kV switchyard as example,calculation is carried out to study tensile force of flexible conductor under short-circuit condition.Through comparingthe calculation results based on IEC standard with Chinese standard,reasonable advices are proposed to decide whethertensile force of flexible conductor under short-circuit condition should be considered in gantry design.