基于U-I曲线的单相自耦变GIC无功损耗算法  

GIC reactive power loss calculation based on U-I curve for single-phase autotransformer

作　　者：刘连光[1] 秦晓培[1,2] 葛小宁[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]国网河北涉县供电公司,河北涉县056400

出　　处：《电力自动化设备》2015年第12期55-59,65,共6页Electric Power Automation Equipment

基　　金：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)~~

摘　　要：准确计算整个电网的地磁感应电流(GIC)无功扰动非常困难。针对超特高压电网广泛采用的单相自耦变压器,提出了一种基于变压器U-I曲线和铭牌参数计算变压器GIC无功损耗的方法,算法利用厂家提供的U-I曲线和铭牌参数建立ψ-i曲线解析模型,求取变压器的GIC无功扰动增量,适用于地磁暴影响评估的工程计算。算例分析结果验证了算法的有效性。Since it is very hard to accurately calculate the reactive power turbulence caused by the GIC（Geomagnetically Induced Current） for the whole power grid,a method is proposed to calculate the GIC reactive power loss of single-phase autotransformer widely used in UHV and EHV power grid,which builds the analytic model of ψ-i curve based on its U-I curve and nameplate parameters to calculate the reactive power increment caused by the GIC. The proposed algorithm is suitable for the engineering calculation to assess the GIC influence and its effectiveness is validated by case study.

关 键 词：U-I曲线 ψ-i曲线 单相自耦变压器 地磁感应电流 无功损耗 

分 类 号：TM41[电气工程—电器]