Identification of the source location Neutral to Earth Voltage (NTEV) rise on the commercial building

Abstract

The Neutral to Earth Voltage (NTEV) rise are categorised one of power quality (PQ) problems in the commercial building. Usually, the NTEV rise occur due to the neutral conductor problems. Theoretically, the neutral problems give an adverse effect to the network system where the phase voltage and harmonic distortion become more imbalance, heating on the conductor cable, and the electrical appliances prone to damaged. This paper presents a novel technique to identify the source location of NTEV rise in the commercial building due to the loose and open neutral conductor. The proposed technique able to identify the problems that occur either on the upstream or downstream location which respected to the measurement points. In addition, the characteristics of neutral problem due to the loose termination and open conductor are also explored based on the 13-nodes distribution system. The results show the source of NTEV rise can be correctly identified. Keywords: Power quality (PQ), Neutral to Earth Voltage (NTEV), Loose termination, Open conductor