Modelling Neutral to Ground Voltage (NTGV) considering current sourcing method and grounding wiring configuration

A ground fault event can cause the rise of neutral to ground voltage (NTGV). Excess NTGV can result in considerable costs and safety issues, especially for high-tech educational buildings, including faulty equipment operation and failure, frequent tripping, and electromagnetic interference. Hence, to explore the consequences and determinants of high NTGV due to ground fault, a reliable model must be employed. As a result, the main goal of this article is to establish the magnitude and shape of the NTGV in relation to ground current and load currents. The load at the educational building is constructed using the current sourcing technique, and the wiring parameters for the grounding system are taken into account. To validate the rate of accuracy of the simulation model, the Pearson correlation coefficient and mean square error (MSE) are utilized. The proposed method for figuring out the size and shape of the NTGV gives very similar results to real measurements.