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Monday, 13 September 2021
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7 a.m.
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Registration and Breakfast
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8 a.m.
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Introductions and Opening Remarks
Kevin Bort, TMEIC
The following presentation will welcome attendees to the course and give a brief overview of the following topics for each day. The course is structured to build on the information presented the day before, and groups topics by major operating centers in a typical mill. Power distribution and hot end will be covered throughout day one, while system automation models, gauging and motors will be covered day two, wrapping up with how all the systems tie together in day three. Further discussion on how to become involved with AIST and the Electrical Applications Technology Committee will be included.
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8:45 a.m.
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Power System Fundamentals 1 — Essential Concepts
Ramesh Khajjayam, Primetals Technologies USA LLC
This section of the course covers the essential power system concepts such as definitions of LV/MV/HV and EHV, three-phase power, how to interpret single-line drawings, three-line drawings and elementary schematics, the concept of per unit, base units, Thevenin equivalent, and simplified short-circuit calculations. The fundamentals and constraints of general power system design and operation will be reviewed and examined, such as voltage drop and current constraints in design, fault contribution, motor sizing requirements, etc. Grounding fundamentals and some basic power quality concepts will also be covered.
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9:30 a.m.
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Break
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9:45 a.m.
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Power System Fundamentals 2 — Intermediate Concepts
Anil Kanagala, Primetals Technologies USA LLC
Using the key fundamentals from the “Essential Concepts” section, this presentation will introduce the basics of the more advanced topics in power system such as modeling, analysis, protection and power quality. Commonly used power system equipment will be discussed, such as buses, cables, transformers and motors, and their protection and design philosophy will be reviewed. Commonly encountered power quality issues will also be covered. A teaser for mode advanced topics is provided at the end to kindle additional interest in power system engineering
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10:30 a.m.
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Hot Mill Power Distribution
Thomas Dionise, Eaton Corp., and Sam Rawson, JNE Consulting
This session will cover hot mill designs, pre-heat furnace and reversing rougher. It will review the supporting electrical distribution system topologies and the electrical equipment comprising the system, including switchgear, motor control centers, motor-generator sets, variable frequency drives and motors. Hot mills with both legacy DC drives and newer AC drives will be considered as well as upgrades to DC drive–based mills involving replacement of motor generators with static rectifiers. The unique nature of the hot mill electrical load will be described in terms of impact on system voltage, harmonics produced, duty cycle power loading and reactive demand.
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11:15 a.m.
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Cold Mill Distribution
Gary Sinders, Steel Dynamics Inc. – Flat Roll Group Heartland Division
This presentation introduces the subject of power supply and distribution as related to typical cold mills.
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Noon
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Lunch
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1 p.m.
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Galvanizing Line Power Distribution
Anil Kanagala, Primetals Technologies USA LLC
This session will cover galvanizing line designs, zinc pot furnace and emergency requirements. It will review the supporting electrical distribution system configurations and the electrical equipment comprising the system, including switchgear, motor control centers, emergency generator sets, variable frequency drives and motors. The continuous nature of the continuous galvanizing line and its effect on power system will be discussed. The nature of welders and drives and their effect on power quality of the power system will be described in terms of impact on harmonics produced, duty cycle power loading and reactive demand.
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1:45 p.m.
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Break
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2 p.m.
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Types of Furnace Systems
Elise Rowe, SMS group Inc.
This presentation will illustrate the electrical and mechanical fundamentals of electric arc furnace operation, with a focus on process power. A comparison of two types of furnace systems, AC and DC, will be discussed, including consideration factors for selecting the appropriate system for a new electric arc furnace.
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2:45 p.m.
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Caster Automation
John Harvey, SMS group Inc.
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3:30 p.m.
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Break
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3:45 p.m.
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Meltshop Auxiliary Systems
Bill McCabe, Schust
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4:30 p.m.
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Adjourn
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