Power Transformer Pre-Commissioning Tests
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Power Transformer Pre-Commissioning Tests Course
Introduction:
In electrical power transmission and distribution networks, the transformer is the most crucial piece of equipment. The condition of the transformer must be regularly checked while it is being serviced in order to guarantee the availability of an uninterrupted power supply. If the transformer fails, this could lead to a loss of industrial production and significant customer annoyance. When the transformer is delivered to the site, it is crucial to confirm its technical compatibility for the intended use and to examine its overall condition before energizing it by connecting it to the power supply system and filling it with power.
Course Objectives:
By the end of the training, participants will be able to:
Have a clear understanding of the basic constructional features of power transformers, various processes during manufacturing, various fittings and accessories, type tests and routine tests in manufacturers works, pre-dispatch precautions, Nondestructive diagnostic measurements to access the present condition of transformers, installation at site, pre-commissioning testing including diagnostic tests and commissioning of the transformer and preventive maintenance practices.
Who Should Attend?
This course is intended for Electrical and Mechanical/Power Engineers, Project Engineers, Maintenance Engineers, and Supervisors and Operating Staff of electrical substations will find this course very useful for enhancing their knowledge related to transformers and its working principles, design, operation & maintenance. The course will also definitely be beneficial for all the other department people concerned with the plant operations, production, maintenance, and safety. It could be also useful for procurement and quality personnel.
Course Outlines:
Transformer Categories and Type
- Insulating Medium
- Dry Type
- Liquid-Filled Transformer
- Construction Tank Construction
- Core Construction
Application and Use
- Distribution Transformers
- Network Transformer
- Arc-Furnace Transformer
- Rectifier Transformer
- Power Transformer
Transformer Fundamentals
- Voltage Relationship
- Current Relationship
- Impedance Relationship Summary
Transformer Polarity, Terminal Markings, and Connections
- Single-Phase Transformers
- Subtractive Polarity
- Additive Polarity
- Three-Phase Transformers
- Transformer Characteristics
Preventive Maintenance of Transformers
- Transformer Installation, Acceptance, and Maintenance
- Unscheduled Maintenance
- Ordinary Maintenance
- Protective Maintenance
- Dry-Type Transformers
- Installation
- Inspection
- Acceptance Tests
- Maintenance
- Drying-Out Methods
- Storage
- Liquid-Type Transformer
- Installation
- Inspection
- Acceptance Tests
- Maintenance
- Drying-Out Methods
- Storage
- Transformer Diagnostic Guide
Transformer Testing
- AC Hi-Pot Test
- TTR Test
- Alternative Test for TTR TTR Capacitor
- Polarity Test
- Induced Potential Test
- FRA
- DC Winding Resistance
- Transformer Core Ground Test
- Polarization Recovery Voltage Test
- The Measuring Instrument
- Test Setup for Recovery Voltage Measurement on Power Transformers
- Evaluation of Measured Polarization Spectra
Online Condition Monitoring of Transformers
- Online Monitoring of Transformers
- Online Monitoring of Bushings and Lightning Arrestors