NDLI: Novel measurement system for grounding impedance of substations and power plants

Content Provider	IEEE Xplore Digital Library
Author	Bo Zhang Rong Zeng Jinliang He Weimin Sun Jinxia Yao Qi Su Se-Won Han Han-Goo-Chu
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., Tsinghua Univ., Beijing, China (Bo Zhang)
Abstract	A new grounding impedance measuring method based on short lead wire of current electrode and a frequency inverter AC source is proposed. The compensating site of the voltage electrode to obtain the real grounding resistance of the grounding system is analyzed according to soil structure, topological structure of the grounding system under test, and the length of current electrode's lead wire. This new method measures the ground impedance at a variety of frequencies other than power frequency, then interpolates them to reach the ground impedance at power frequency. The mutual inductance between the potential and current wires is analyzed and computed. The Intel 80C196KC cored grounding impedance measurement system is developed and the software is programmed. A field test was performed in the substation and the system worked stably.
Starting Page	1389
Ending Page	1394
File Size	598502
Page Count	6
File Format	PDF
ISBN	0780363388
DOI	10.1109/ICPST.2000.898172
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-12-04
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance measurement Grounding Substations Electrical resistance measurement Electrodes Frequency measurement Soil measurements Wire System testing Current measurement
Content Type	Text
Resource Type	Article

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