Power Transformer Maintenance & Diagnostic

Course Content

Module-1 Introduction

A. Classifications of substations:

Module -2 Elements of substation

A. Transmission and distribution of electrical power

Module -3 Comparison between D.C. and A.C. systems of transmission and Parts of Substation

A. Distribution
B. Bus-bar
C. Bushing
D. Lighting arrestor
E. Isolator switch (Group operated switches)
F. Circuit breakers
G. Transformers
H. Instrument transformers
I. Switch gear
J. SF6 gas-insulated switchgear

Module-4 Substation Design Network as an example

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Module-5 Selection of substation equipment

A. Selection of Transformers:
B. Transformer Size Selection Example
C. Ratings of Circuit Breaker:
D. Ratings of Isolators (Disconnectors):

Module-6 Characteristics of Voltage Transformers

A. Voltage transformer for metering
B. Voltage transformer for protection

Module-7 Characteristics of Current Transformers

A. Voltage transformer for metering
B. Voltage transformer for protection

Module -8 Characteristics of Low Power Current Transformers (LPCT)

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Module-9 Cubicals and substation example

A. Cubicals: Connection to main (incoming) power supply
B. Cubicals: Protection with SF6

Module- 10 Substation Design Example

A. Standard ratings of Measurement current transformers
B. Standard ratings of Measurement voltage transformers in Medium
Voltage
C. Standard ratings of HRC fuses in Medium Voltage
D. Standard ratings of Distribution Transformers in Medium Voltage
E. Standard ratings of Switchgears in Medium Voltage
F. SDL of Substation Design