Harmonics, Power Quality and Its Effects on Gas Insulated Switchgears (GIS)
| Start Date | End Date | Venue | Fees (US $) |
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Harmonics, Power Quality and Its Effects on Gas Insulated Switchgears (GIS)
| Start Date | End Date | Venue | Fees (US $) |
|---|
Introduction
This intensive five-day training focuses mainly on the effects and presence of harmonics in power systems, with reference to auxiliary equipment such as variable speed drives, uninterruptible power supplies and others.
When more electronic devices are connected to our power systems, the ‘quality’ of power becomes more important. Stable voltages and undistorted waveforms are two characteristics that are very desirable. Grounding affects voltage stability, and more importantly, is critical to personal safety. Harmonics distortions will result in nuisance tripping of electrical systems. The advantages, components, characteristics and operations of gas-insulated switchgear substations are also discussed in this course.
Objectives
- Understand the various types of power quality issues
- Determine causes of waveform distortion
- Explain the effects of harmonics, filters and K-factor
- Analyze the common voltage disturbances
- Design the protection of gas-insulated switchgear substations
- Understanding types of power quality issues and harmonics
- Gain in-depth knowledge of operation principle and construction of gas-insulated switchgear
- Identify of the various types of waveforms
- Mitigation of harmonics and K-Factor
- Grounding of gas-insulated switchgear substations
By the end of the training, participants will be able to:
Training Methodology
This is an interactive course. There will be open question and answer sessions, regular group exercises and activities, videos, case studies and presentations on best practice. Participants will have the opportunity to share with the facilitator and other participants on what works well and not so well for them, as well as work on issues from their own organizations.
Who Should Attend?
This course is intended for all Electricians, Electrical supervisors, Plant electricians, Operations & maintenance engineers, supervisors & technicians and Maintenance technicians. Also, this course will benefit all levels of professionals in an electrical installation. It will enable them to understand power quality issues, causes of harmonics and operation of gas-insulated switchgear.
Course Outline
Day 1: Introduction to Power Quality Analysis and Harmonics
- What is power quality and definitions?
- Need for improving power quality
- Effects of disturbances on equipment and processes
- Sources of harmonics, symptoms and effect on equipment
- Harmonic limitations (IEEE Standard 519)
- Series resonance, filter design and third harmonic neutral current
Day 2: Fundamentals of Power System Harmonics and Calculations
- The basic concept of harmonics and interharmonics
- Harmonic indices and its effects
- Harmonic resonance, filters and their characteristics
- System Harmonic Models
- The Current Injection Method
- Frequency Response Modelling
Day 3: Grounding, Voltage Disturbances, Measurement and Mitigation Techniques
- Types of grounding, symptoms of ineffective grounding
- Arcing ground faults effects and control
- Impact of lightning, system switching, system faults, sags, and swells
- Disturbance and grounding measurements
- Waveform signatures and importance of K-Factors
- Power line conditioners operations
Day 4: Element of Gas Insulated Switchgear (GIS)
- Description of GIS main components
- Switching components functions and applications
- The technical evolution of GIS
- Gas circuit breakers arc extinction
- Disconnectors and earth switch construction and operation
- Structural Components, bus-bars and support insulators
Day 5: High voltage GIS Substations and Grounding
- Air-insulated switchgear (AIS) versus GIS substations
- Basic GIS substation layouts
- The indoor and outdoor GIS
- Particularities of grounding in GIS
- Low-frequency grounding
- High-frequency grounding, Transient Ground Potential Rise (TGPR)

