电力系统自动化2016，Vol.40Issue(16)：132-137,6.DOI:10.7500/AEPS20151203007
抑制变压器地磁感应电流的电容隔直装置安装位置优化
Installation Position Optimization of Capacitor DC Blocking Devices for Suppressing Geomagnetically Induced Currents in Transformers
摘要
Abstract
Capacitor DC blocking devices are usually used for suppressing DC‐bias of transformers . If there is no full consideration before installation , owing to the complex flow routes of geomagnetically induced currents ( GIC) , the blocking device installed at the neutral point of a certain transformer may lead to more severe DC bias on adjacent transformers . Therefore the optimal position of installation for the capacitor blocking device is studied . This paper introduces the transformer effective GIC to describe the effect of geomagnetic storms on transformers by considering the wiring of autotransformers and the topology of power networks . After investigating the influence of DC blocking devices on transformer effective GIC , this paper proposes an optimization method of all transformers effective GIC being less than the allowable limiting value , with the least quantity of DC blocking devices as optimization objective , and the genetic algorithm to solve the problem . As an example , the GIC equivalent model of Gansu main power grid is built , which includes 47 substations and 101 nodes . Based on the model , the optimal quantity and installing location of DC blocking devices are calculated with the optimization method and genetic algorithm ,and the outcome is compared with that derived from the un‐optimized method . The results of calculation and comparison have verified the feasibility and superiority of optimization methods proposed in this paper .关键词
直流偏磁/地磁感应电流/电容隔直装置/优化方法/遗传算法Key words
DC-bias/geomagnetically induced current ( GIC )/capacitor DC blocking device/optimization method/genetic algorithm引用本文复制引用
刘春明,黄彩臣,林晨翔..抑制变压器地磁感应电流的电容隔直装置安装位置优化[J].电力系统自动化,2016,40(16):132-137,6.基金项目
国家自然科学基金资助项目（51177045）；国家高技术研究发展计划（863计划）资助项目（2012AA121005）。 （）
