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DMN4-SP Engineering in Mining - Power System Protection

  • Duration:
  • Investment: US$ 249
Certificate:

Must complete all lessons

Content

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Description

Electrical power system operates at various voltage levels from 415 V to 400 KV or even more. Electrical apparatus used may be enclosed (e.g., motors) or placed in the open (e.g., transmission lines). All such equipment undergo abnormalities in their lifetime due to various reasons. To achieve safety of the system, electrical equipment has to be monitored to protect it and provide human safety under abnormal operating conditions. 
This course is designed to help students to gain theoretical and applied understanding of power system protection, Protection schemes for various power system configurations, Fault current calculations, Protection of generators, transformers, transmission lines, bus bars and feeders. 
After completing this course, students will gain professional knowledge on the emerging issues and challenges in the power system protection field related to increasing penetrations of distributed generation and intelligent, self-healing networks.

 

WHO SHOULD COMPLETE THIS COURSE

  • Electrical  Engineers
  • Instrumentation Engineers
  • Electricians 
  • Maintenance Engineers
  • Supervisors
  • Technicians
  • Maintenance technicians
  • Plant Engineers
  • Design Engineers
  • Project and/or Construction Engineer

COURSE OUTLINE
PROTECTION FUNDAMENTALS

  • Power system protection
  • Protection philosophy
  • Protection system components

CALCULATION FAULT CURRENTS

  • Possible faults
  • Magnitudes of fault currents
  • Per unit impedance in fault calculations
  • Calculation of short circuit
  • Calculations using impedance

EARTHING AND ITS RELEVANCE TO PROTECTION

  • Type of system and earthing fault magnitude
  • Effects of electricity on humans
  • Electric shock modes of contact
  • Earth loop resistance and protection

PROTECTIVE DEVICES AND COORDINATION

  • Protection approach
  • Fuses types
  • Fuse application
  • Digital protection features
  • Typical modern relays
  • Extended protection

CIRCUIT BREAKERS

  • Purpose of circuit breakers
  • Types of circuit breakers
  • Battery construction

INSTRUMENT TRANSFORMER

  • Theory of Operation
  • Voltage Transformer
  • Current Transformer
  • CT magnetizing curve
  • Polarity

RELAY TYPES

  • Two basic protection types
  • Operation of IDMTL relay
  • Current setting IDMTL relay
  • Time multiplier setting
  • Different operating curves
  • Intelligent electronic devices

PROTECTION COORDINATION

  • Basic principle
  • Time and current coordination
  • Characteristics of IDMT relay
  • Ideal coordination of setting curves

FEEDER PROTECTION

  • Unit Protection
  • Advantages of unit protection
  • Feeder protection
  • 3 phase over current and earth fault
  • Directional protection

TYPICAL PROTECTION IN COLLIERY

  • Ground leakage protection
  • Ground leakage sensitivities
  • Pilot wire monitor
  • Earth fault lockout
  • NER monitor

NEED TO PROTECT BUSBARS

  • Protection
  • Frame leakage BB protection
  • Busbar blocking scheme
  • Zone selective interlocking scheme
  • Optical sensing

TRANSFORMER PROTECTION

  • Inter Turn and Core faults
  • Delta star transformer
  • Transformer earth fault current
  • Resistance earth neutral
  • Earth fault protection
  • Buchholz protection

ELECTRIC MOTORS

  • Failure breakup
  • Protection needed by AC motors
  • Protection of motors
  • Most important failure windings

THERMAL MODE OF MOTORS

  • Steady state temperature
  • Temperature rise multiple starts
  • Effect of unbalanced current
  • Hot and cold condition
  • Starting problems
  • Relay providing protection

SHORT CIRCUIT PROTECTION

  • Earth fault LV
  • Earth fault HV- Low resistance earthing
  • Earth fault HV- High resistance earthing
  • Negative sequence protection
  • Temperature based protection
  • Other protection

GENERATOR PROTECTION

  • Small and medium sized Industrial generators
  • Generators- Electrical fault
  • Generators- Mechanical faults
  • Earth fault protection
  • Overload protection
  • Overcurrent protection

GENERATOR UNBALANCE PROTECTION

  • Rotor fault protection
  • Change of field distribution
  • Field failure
  • Out of synchronization

PRODUCTION MANAGEMENT

  • Typical generator protection
  • Functions of maintenance
  • Issues of maintenance
  • Configuration records
     

Investment

Plan Name Investment
Unlimited Access for 2 Years: US$ 249

Instructor

Govindaraghavan Vijayaraghavan

B.E. (Hons) Electrical

Used EY Cert 2014

 

Vijay’s experience is primarily in the field of industrial power distribution systems. He has contributed to the design, engineering, commissioning and operation of HV distribution equipment in steel industry for over 15 years which includes outdoor switchyards, indoor MV switchgear and distribution substations. He has also been trained in the operation of large captive power plants forming part of integrated steel plant systems. He has worked as the head of testing of protection and HV equipment in a large 4 MTPA integrated steel plant.

 

He has also served as the head of the electrical and instrumentation group for over 2 decades in a firm of consulting engineers handling several large international projects, including the power distribution systems of large metallurgical industries and the integrated power generation plants, the captive thermal power generation unit of an Aluminium smelting and refining complex and Tonnage oxygen plants associated with steel manufacturing, among several others.

 

Vijay has been associated with IDC/EIT for over 10 years and has designed and presented training courses on various topics related to electrical power engineering. Vijay is a popular instructor his students often seek his advice in analysing and solving technical problems at work, sometimes long after the completion of the course itself.

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