Power Quality Analysis Mitigates SCADA and HMI Failure
Kanai Banerjee
Electrical Harmonics, Power Quality, Green Building Design & HVAC&R Professional, owner at Encon Engineers
Power Quality Analysis in a tyre conglomerate, across India, through a decade, revealed the root cause of repetitive electronic card failures in SCADA, HMI, Hard Disk and AC/DC Drives and frequent unwanted tripping in its process due to voltage fluctuation.
The supervisory control and data acquisition system, which is a combination of software and PLC/Computer hardware, malfunctions in sending correct batch data from HMI to process computer missing out a few process data, each day. The LED fitting driver fails due to triplen harmonics which in-addition cause a neutral current in the lighting transformer feeder.
The Curing section is most sensitive in the tyre manufacturing process which used to trip frequently on voltage fluctuation. During monsoon, there used to be persistent tripping with chronic grid voltage surges.
The plant management planned to upgrade the 33kV grid incomer to 132kV for solving the tripping problem. It was very costly, and that could not have solved the tripping problem.
Read the Case Study >> Power Quality Analysis and Mitigation of Tripping and Failures