Power Quality problems

Pulkitt Steel Rolling Mills, Pondicherry

2010 -12, Repeat jobs.

PROJECT DETAILS
300TPD TMT 8-36mm bar Rolling Mills. Maximum demand 3000KVA. Energy Efficiency SEC 116kWh/Ton for TMT bar rolling mill.
RESULTS ACHIEVED
Harmonic and troubleshooting study for root cause analysis

Vandana Global Ltd, Raipur

2015

PROJECT DETAILS
41mw (33 and 8mw) co-generation power plant, 4nos 12ton Induction Furnaces and SMS, 160ton submerged electric arc furnace for ferro alloys. 700tpd SIP sponge iron and Pellet plant. 35tph TMT-8-32mm/WRM-5.5mm plant.
RESULTS ACHIEVED
Troubleshooting analysis carried out for 41mw power plant tripping and blackout issues and frequent electrical and electronic failures with IF, Ferro Alloy, SIP and Pellet and wire rod mill sections.

Enhancing 3P, Power, Productivity, and Profitability; solving drive stalling and increasing sugar recovery

Abstract- A 3500TCD sugar factory installed across 3mw 415v TG four DC Mill drives each 450kw and highly fluctuating cane preparation section's slip ring induction motor loads namely 2nos 560kw Fiberizer, 225kw Leveler and 187kw Chopper. It wanted uninterrupted power export from its 6mw 11kv TG and connected across it stable linear loads of boiling and sugar houses through a set of 3.15mva and 1.5mva, 11kv/415v, Dyn11 transformers.

Problem of electrical blast from VFD Harmonic; and a methodology for troubleshooting and increasing productivity

Abstract - VFD Harmonic forced a power plant to shutdown due to power quality failure. Starting with drive tripping it blasted switch gear, bus bar & electrical panel. This IPP with a 25mw, 11kV, 50Hz power plant and 5000TCD sugar milling unit had completed its first anniversary without harmonic problem. But during 2nd year's operation, it started-off with a massive blast of a 6300A Air Circuit Breaker (ACB). It was at the incomer of an electrical panel. The 415V PCC panel was supplying to sugar plant's process load.