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Mitigation of the effect of magnetizing inrush due to switching of distribution transformers in HT power distribution system of a typical chemical plant Dr. Das J.K.*, Chakraborty Debnil** *Tata Consulting Engineers Ltd. **Calcutta Electric Supply Corporation Ltd. Online published on 3 October, 2018. Abstract Very often it is noticed that complete black out takes place in an industrial plant for occurrence of an abnormal condition in the power system. Generally restoration of power is done through available Emergency Diesel Generator (EDG) sets in the plant to ensure power supply to the critical loads. It is observed that during initial load pick up phase switching inrush of the distribution transformers creates enormous difficulty in synchronisation of EDG sets resulting in secondary collapse which may again delay the entire process of emergency power restoration. This delay may create irreversible damage to the power sensitive critical loads. Similar such situation was faced in a typical large chemical plant and was studied further to overcome the situation through cost effective measures. Top Keywords Mitigation of Effect of Magnetizing Inrush, Emergency Diesel Generator (EDG), Safe Emergency Power Restoration. Top | |
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