Research on Ferroresonance Detection in Small Current Neutral Grounding System

Qing Chao Zhang; Xin Hua Jia; Peng Jia; Chao Wei

doi:10.4028/www.scientific.net/AMR.694-697.1233

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Measurement of Diesel Nozzle Geometry with X-Ray Phase Contrast Imaging Technique
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Research and Development of Sucrose Supersaturation Soft Measurement System Based on Least Square Support Vector Machine
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Research on Ferroresonance Detection in Small Current Neutral Grounding System
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Fault Diagnosis of Steam Turbine Unit for Performance Monitoring Based on Versatile Logical Form
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Photogrammetry Technology of Three Dimensional Coordinate in the Construction of Curved Surface
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 694-697Research on Ferroresonance Detection in Small...

Research on Ferroresonance Detection in Small Current Neutral Grounding System

Abstract:

A novel method to detect ferroresonance was proposed based on the drastic characteristics of the electromagnetic voltage transformer (PT) current rate. This scheme takes current rate which is greater than a threshold value as starting signal and judges the occurrence of resonance by detecting duty ratio of the peaks and interval angles. Then, it identifies the periods and patterns established on the interval time of spikes. Through simulation testing of MATLAB, it can distinguish the occurrence and types of ferroresonance accurately, which verifies the validity of the detection method.