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TRANSFORMER CONDITION ASSESSMENT ANALYSIS (BATCH #1)
2023-02-13 08:00 - 2023-02-17 17:00 | TANGERANG/tbc, Indonesia
OVERVIEW
In the electric power supply industry, the role of power transformers has a strategic role. Compare to distribution transformers, power transformers have a different operation condition because on power transformer there are on load tap changer (moving context) and power transformers operate at the end of high voltage transmision lines where lightning strokes hit frequently on transmission lines creating travelling waves which could enter power transformers and create damage. Therefore installing lightning arrester in front of power transformers is very essentials.
OBJECTIVE
On completion of this course, engineers an technicians will have a comprehensive understanding of the principles of transformer maintenance objective, transformer insulation system, capability of transformer against thermal and mechanical stress, transformer monitoring technique for ON and OFF line operation.
CONTENT

Bagian-bagian utama dari transformator:

Bushing
Clamp penyambung
Kondensor pada bushing
Minyak bushing
Kumparan primer dan sekunder
Isolasi kumparan
Pengukuran isolasi
Tangki transformator

Minyak transformator

Susunan kimia minyak transformator
Tegangan tembus
DGA (Dissolve Gas Analysis)
Tes kimiawi

Proteksi transformator

Proteksi terhadap gangguan di luar transformator

Relai arus lebih
Relai arus hubung tanah

Proteksi terhadap gangguan di dalam transformator

Relai diferensial

Buil-in protection

Reali bucholz
Relai sudden pressure
Relai suhu kumparan
Fire protection
Explotion valve

The role of power transformers

Construction and working principles
Main parts of power transformers
Losses in power transformers
Weak points of power transformers
Technical specification of power transformers
Insulation coordination

The objective of maintenance:

Development of maintenance methodes
What is condition base maintenance
Oil transformer construction

Paper/cellulose and insulating oil Properties:

Chemical
Dielectric strength

Maximum loading of oil filled transformer:

The capability of transformer against non-sinusoidal load
Transformer aging v/s winding temperature

Transformer through fault (external short circuit fault)
IEE guide for the interpretation of gases generated in oil-immersed transformer
Transformer winding and core deformation derection utilizing SFRA technique
On-line monitoring:

Transformer non-sinusoidal load measurement and interpretation
Transformer overall temperature profile/thermal image and interpretation
Moisture in oil measurement

Off-line monitoring

Measurement of main winding and bushing insulation power factor dissipation
Winding and core displacement measurement

Operational problems

On load tap changer
Automatic voltage regulator
Requirements for paralel operations
Protection of transformers

Praktek

PREREQUISITES
Participants should be undergraduate electric power engineer with 2 years experience in operation and maintenance.
But any experienced engineer who has the same level of knowladge and experiance are welcome.
CERTIFICATION

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