| 地磁感应电流监测装置在西北750 kV电网的应用 |
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| 引用本文： | 颜永强,冯玉昌,刘连光,杨 毅.地磁感应电流监测装置在西北750 kV电网的应用[J].电网与水力发电进展,2008,24(12):38-41. |
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| 作者姓名： | 颜永强 冯玉昌 刘连光 杨 毅 |
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| 作者单位： | 西北电网有限公司;西北电网有限公司;华北电力大学;华北电力大学 |
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| 基金项目： | 国家自然科学基金项目(50677020);;国家“863计划”项目(2007AA04Z425);;西北电网有限公司《地磁感应电流对750kV变压器及保护影响的研究》科技项目 |
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| 摘 要： | 磁暴在输电线路引发的地磁感应电流（GIC）频率为0.001～0.100 Hz，这种准直流的GIC将造成变压器直流偏磁饱和，引发电网保护误动作和停电事故。为了分析、研究GIC对西北750 kV电网的影响，开发研制了电网GIC监测装置。装置在官亭、兰州东750 kV变电站的应用表明，研制的装置能有效地测量电网准直流、随机性信号，并且具有数据处理量少、节约存储空间等优点。
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| 关 键 词： | 磁暴 GIC监测 霍尔传感器 直流偏磁 软硬件设计 |
Application of GIC Monitoring Devices in Northwest 750 kV Power Grid |
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| Authors: | YAN Yong-qiang FENG Yu-chang LIU Lian-guang and YANG Yi |
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| Affiliation: | Northwest China Grid Company Limited;Northwest China Grid Company Limited;North China Electric Power University;North China Electric Power University |
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| Abstract: | Geo-magnetically induced currents (GIC) are triggered by geomagnetic storms, the frequency of which ranges from 0.001 Hz to 0.100 Hz. GIC will cause DC bias saturation of transformers, unnecessary relay tripping and blackouts. To analyze and study effects of GIC on Northwest 750 kV power grid, GIC monitoring device is developed for power grids. The application of devices in Guanting and Eastern Lanzhou 750 kV substations indicated that the devices can effectively measure random quasi-dc signals in power grids, and have advantages such as less data processing volume and memory space. |
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| Keywords: | geomagnetic storm GIC monitoring Hall sensor DC bias design of hardware & software |
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