双电压等级电网GIC的相互作用特征

发布时间：2018-02-24 12:37

本文关键词： 地磁暴地磁感应电流双电压等级电网全节点模型相互作用　出处：《中国科学:技术科学》2015年12期 　论文类型：期刊论文

【摘要】：电网地磁感应电流(GIC)影响因素多、机制复杂.计算普通变压器为主的500 k V电网的GIC,通常忽略220 k V及以下电网的GIC.中国2005和2009年开始建设的750,1000k V电网普遍采用单相自耦变,变压器原副边有直接电气联系,研究原副边电网GIC的相互作用特征和影响因素,对研究变压器干扰效应、评估地磁暴灾害风险和治理电网GIC具有重要意义.本文以中国甘肃750与330 k V电网和建成及在建1000与500 k V电网为例,运用国际上2012年新推出的"GIC-Benchmark"标准算例,分别考虑忽略和不忽略变压器副边电网GIC的影响,建立了甘肃主网和特高压及500 k V电网的GIC模型,计算了相当于2004年11月9~10日地磁暴作用下的甘肃主网和特高压及500 k V电网的GIC水平.比较分析了各种情况下电网GIC的相互作用及影响,探明了两种电压等级电网GIC的相互作用特征,以及副边电网GIC对750和1000 k V变压器GIC的贡献.希望为电网GIC准确计算、地磁暴灾害风险评估及电网GIC治理提供科技支撑.
[Abstract]:The grid geomagnetically induced current (GIC) influence factors and complicated mechanism. The calculation of general transformer. 500 K V grid GIC, K V and the following 220 usually ignore the power grid GIC. Chinese 2005 and 2009 started the construction of the 7501000k V network is widely used in single-phase autotransformer, direct electrical contact transformer, primary and secondary research the interaction characteristics and influencing factors of GIC effect on power grid, the study of transformer interference, is of great importance to assess the geomagnetic storm disaster risk and governance. This paper takes Gansu power grid GIC Chinese 750 and 330 K V grid and completed and built in 1000 K and 500 V power grid as an example, based on the 2012 launch of the new "GIC-Benchmark" standard examples are considered to ignore and not ignore the impact of the secondary side of the transformer power grid GIC, established the GIC model of Gansu power grid and UHV power grid and 500 K V, equivalent to November 2004 9~10 geomagnetic storm were calculated With the Gansu power grid and UHV power grid GIC V and 500 K. A comparative analysis of the interaction and influence of GIC grid under various conditions, proved the interaction characteristics of two kinds of power grid voltage level GIC, and GIC on the 750 side with power grid and 1000 K V transformer GIC. Hope for power grid GIC the accurate calculation, provide scientific and technological support to storm disaster risk assessment and network GIC control.

【作者单位】：华北电力大学新能源电力系统国家重点实验室;国家电网浙江省电力公司杭州供电公司;国家电网能源研究院;
【基金】：国家高技术研究发展计划(批准号:2012AA121005) 国家自然科学基金(批准号:51577060;51177045) 和科技部国际合作计划(批准号:2010DFA04680)资助项目
【分类号】：P353;TM727

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