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.
出处
《电力自动化设备》
EI
CSCD
北大核心
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)~~
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
U-I curve
ψ-i curve
single-phase autotransformer
geomagnetically induced current
reactive power loss
