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Transmission line ideal phasing was used to mitigate a distribution voltage imbalance problem. Customers in the common service area of an electrical substation had been reporting power quality problems related to voltage imbalance. Through investigation, an unexpected pattern of seasonal voltage imbalance variation was found to be consistent with transmission network power flow patterns. Linear regression...
This paper describes the electromagnetic transient study carried out to calculate the degree of unbalance in existing transmission network in Sarawak. It first discusses the modelling of the transmission grid in PSCAD/EMTDC and the verification of the simulation model against real-time recordings. The paper then provides estimation on the current unbalances in individual circuit and paralleled circuits...
This paper presents a model of lightning performance of a 230 kV double circuit overhead transmission line and substation using ATP/EMTP. Including the models of transmission line, tower surge response, footing impedance, impulse electric strength of line insulator and lightning stroke as well as substation equipments, the paper introduces a comprehensive lightning transient study. Based on this model,...
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