Power Quality

Overview

This program is designed to aid in upgrading one's technical knowledge and understanding of power quality issues. The basic parameters of power quality, the problems caused by different types of electrical equipment and ways of mitigating the problem are covered. The program is focused at the technician/operator level.

Who Benefits:

Engineers, trainers, maintenance staff, plant operators.

Language Availability:

English

Format:

• Video
• CD-ROM

Video Support Material:

Reproducible student workbook and instructor guide available with each module.

View the Learning Objectives

Program Segments

4501 Power Quality Overview

Utility distribution systems, major equipment, primary/secondary subsystems; customer classifications, industrial, commercial, residential; power quality issues, voltage sags & swells, harmonics, stray voltage, flicker, excess neutral current; utility-customer interface.

4502 Causes of Power Quality Problems

Application of non-linear loads, adjustable speed drive, electronic ballasts, static var compensators, rotating machines; utility system faults; motor starting; customer power factor, improvement capacitors, harmonic magnification due to resonance; lightning and switching surges; proper wiring and grounding.

4503 Impact of Low Quality Power

Outage/malfunction of crucial equipment and processes; capacitor bank failure; overheating and accelerated aging of equipment; telephone/tv/radio interference, electrical noise and flicker; metering and instrumentation errors.

4504 Solution Methods for Power Quality Problems

Filtering techniques; uninterruptible power supplies; power conditioning equipment; detuning resonant circuits; isolation & cancellation methods; transformer & ground connections; multi-phasing; surge suppressors; fault clearing practices; power quality improvement methods.

4505 Utility and Customer Roles

Industry standards, harmonics, voltage surges & quality; monitoring and analysis, total harmonic distortion, power quality monitoring equipment; site surveys, role of personnel, utility operators and engineers, utility customer service representatives, customer representatives.

4506 System Grounding

Reasons for grounding, safety, operational concerns; grounding methods, effective & low impedance grounding, high-impedance grounding, ungrounded systems; sub-station grounding, ground potential rise, step & touch voltages, maximum allowable body current.

4507 Grounding of Premises & Equipment

Grounding arrangements, industry codes & practices, grounding points & electrode systems, bonding; grounding generators and up’s, vulnerability to short circuit conditions, single & multiple generators systems, connections to other power sources, emergency & standby units; grounding unit substations & switching centers; grounding for static & lightning protection.

4508 Powering & Grounding of Electronic Equipment

Feeders & branch circuits, single phasing in 3-phase circuits, load balance, power factor; dedicated and shared circuits, unwanted interaction; grounding for sensitive electronic equipment, insulated ground circuits, signal reference grids, multi & single point grounds; surge & lightning protection; electrical distribution equipment, dry-type transformers; mitigation techniques for variable frequency motors.

4509 Basic Power Quality Testing & Inspection

Basic primer for power quality investigators; provides methods and guidance for hands-on power quality work; reviews common test equipment; investigates techniques used in troubleshooting & repairing common power quality problems wiring deficiencies, bonding, isolated grounds, computer loads, neutral current harmonics, neutral sizing, transformer de-rating, common problems with the main building ground.

4510 Power Quality Case Studies

Neutral current harmonics, over-heating of neutrals & transformers; capacitor switching, impact on drives and other electronic equipment; premises wiring problems, neutral to ground bonds, conduit grounding; radiated noise, emi and emf effects on circuits and devices.

4511 Designing for Power Quality - Electronic Facilities

Electrical environment, load requirements, margins, effect of power factor & source impedance, power factor improvement, power conditioners, mitigation of harmonics, noise transients, sags, moment Aries, interruptions, interface with life-safety & communications, code compliance, neck Art. 645, grounding requirements, design concepts, redundant systems.

4512 Designing for Power Quality - Industrial/Commercial Facilities

System configurations, voltage drop, motor & drive design, factory automation, solid state starters, interference (ri/emi), harmonic control, filters, transient protection, voltage sags & flicker, grounding, uninterruptible approach, networking of ups, computer simulation & analysis.