GIC Calculation of Guangdong Power Grid Based on Geoelectric Field Data

doi:10.3969/j.issn.1000-7229.2015.12.016

Abstract

Abstract:

One of the most effective methods to shield a power grid from the geomagnetic storms is the reasonable planning and scientific arrangement of the number and direction of the feeder lines connected to substations, where the precise GIC （geomagnetic induced current） calculation serves as the foundation. According to the measured geoelectric field data from Ziwu Project and the structure of Guangdong 500 kV power grid, this paper established the full node model to calculate the GIC of Guangdong power grid, and completed the theoretical GIC calculation in this grid during the geomagnetic storm on September 12th, 2014. By comparing the calculated result with measured data, it shows that the measured geoelectric field data serves better than geomagnetic data for GIC calculation, suggesting enhanced geoelectric field surveillance so as to provide service and data for geomagnetic storm disaster prevention in the power grid designing phase.

Key words: geomagnetic storm, geoelectric field, geomagnetically induced current, GIC calculation

CLC Number:

TM 721

LIU Lianguang, WANG Kairang, WEI Kai, QIAN Chen,CUI Xiaodan. GIC Calculation of Guangdong Power Grid Based on Geoelectric Field Data[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(12): 102-107.

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