An important step in the design of any power distribution system is the time-current coordination of all overcurrent protective devices required for the protection of the system and the connected equipment. When a short circuit or an abnormal power flow occurs for a sustained period of time, the protective devices should react to isolate the problem with minimum disruption to the balance of the system. This is the goal of a well-coordinated electrical power system

Course Highlights

Basic power system design and protection
Load Flow Analysis
Short Circuit Calculations
Instrument Transformer
Coordination Studies
Ground Fault Protection
Equipment Protection
Overcurrent Coordination
Overcurrent Characteristic curves
Protective Relay Setting and Testing

Who Should Attend

This course will enhance the understanding and increase competencies for:

  • Design Engineers
  • Project and/or Construction Engineer
  • Maintenance Engineer
  • REE or graduate of Electrical Engineering
  • Facilities Engineer

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On Site Training

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More Info

Topics to be discuss:

  • Basic power system design and protection
  • Load Flow Analysis
  • Short Circuit Calculations
  • Instrument Transformer
  • Coordination Studies
  • Selection and Application of protective devices
    • Fuses
    • HV Fuses
    • LVCB
  • Ground Fault Protection
  • Equipment Protection
    • Conductor
    • Motor
    • Transformer
    • Generator
    • Bus and Switchgear
    • Service Supply Line
  • Overcurrent Coordination
  • Overcurrent Characteristic curves
  • Protective Relay Setting and Testing

 

Course Background

An important step in the design of any power distribution system is the time-current coordination of all overcurrent protective devices required for the protection of the system and the connected equipment. When a short circuit or an abnormal power flow occurs for a sustained period of time, the protective devices should react to isolate the problem with minimum disruption to the balance of the system. This is the goal of a well-coordinated electrical power system. The reader should be aware that this chapter addresses only one aspect of system protection: overcurrent protection. For most large, medium-voltage systems, overcurrent protection acts only as backup for primary protection and, as such, this chapter is not a complete study of system protection. The operation of protective devices can be estimated by graphic representation of the time-current characteristics curves (TCCs) of these devices. By plotting these characteristics on a common graph, the relationship of the characteristics among the devices is immediately apparent. Any potential trouble spots, such as overlapping of curves or unnecessarily long time intervals between devices, are revealed. By indicating on the current scale the maximum and minimum value of short-circuit currents (three-phase and line-to-ground) that can occur at various points in the circuit, the operation of circuit protective devices can be estimated for various fault conditions. An accompanying single-line diagram can indicate the components and define their location in the circuit. (IEEE 242 Buff Book)

 

 

Course Outline:

 

At the end of the program, the participants will be able to:

  • Enumerate the fundamental, principles of load flow analysis, short circuit analysis and protection coordination.
  • Solve short circuit problems in relation to actual practices.
  • Analyze and examine theories, formulas and techniques for power system analysis: per-unit calculations, symmetrical components, fault calculations,
  • Create and build power flow studies and its application.
  • Interpret overcurrent protection of power system.
  • Compute and analyze the use of protective devices: fuse, circuit breaker and overcurrent relays
  • Generate a protective device studies using software (Paladin DesignBase formerly EDSA)
  • Apply power system software studies to actual protective relay
  • Prepare relay settings  and conduct simulated tests on  protective device using Power System Simulator Test Set (DOBLE F6150).

 

 

Day 1- 8 Hours

 

  1. BASICS OF POWER SYSTEM DESIGN AND PROTECTION
    • Overview
    • Analysis Involved for protection and design
    • Per unit system
    • Sequence Components
    • Power System Software

 

  1. LOAD FLOW ANALYSIS
    • Overview
    • Objectives of Load flow analysis
    • Theory behind load flow
    • Verification of equipment KVA and Current flow limits
    • Verification of protective device capacities
    • Application of load flow analysis
    • Values needed for coordination
    • Hands-on load flow analysis using power system software (Paladin DesignBase formerly EDSA)
  2. SHORT CIRCUIT  STUDIES
    • Overview
    • Importance of short circuit analysis
    • Theories
    • Symmetrical and asymmetrical currents
    • Verification of Available short circuit currents
    • Interrupting rating and withstand rating
    • Values needed for coordination
    • Hands-on short circuit analysis using power system software (Paladin DesignBase formerly EDSA)

 

Day 2- 8 Hours

 

  1. Protection Coordination Studies
    • Overview
    • Selectivity Rules
    • Time Current Characteristic Curves
    • Time Margins
    • Practical Exercises

 

  1. Selection and Application of protective devices
    • Fuses
    • HV Fuses
    • LVCB
  2. Ground Fault Protection
  3. Equipment Protection
    • Conductor
    • Motor
    • Transformer
    • Generator
    • Bus and Switchgear
    • Service Supply Line

 

Day 3- 8 Hours

  1. Basic Instrument Transformer Sizing
  2. Protection Coordination Using EXCEL
  3. Protective Relay Hands-on using Relay Test Set (DOBLE F6150)
    • Actual Setting of Relays (BASLER Relays)
    • Basic relay Logic Orientation
    • Hands On – Testing of overcurrent relay device:
  • May 3 to 5, 2017
  • May 31 to June 2, 2017
  • July 26 to 28, 2017
  • August 23 to 25, 2017
  • September 27 to 29, 2017

Engr. Felgie C. Magla-oy, REE

Engr. Magla-oy gained his experience as a Power System Planning Engineer at the Visayan Electric Company (VECO) for four (4) years. Distribution Line and Substation Sizing Optimization, Substation Siting and Load Flow Analysis using SynerGEE Software are some of his know-how. With his Power System background, he is now the Protection Engineer of WESTCO Electrical and Equipment Corp.

Engr. Chris Tabios, REE

A highly trained electrical engineer in power system simulations. He conducts power system studies for commercial and industrial companies that require intrinsic data analyses to protect their electrical network from uncoordinated protective relays, unknown fault currents and the computations for arc flash ratings to protect the maintenance team for untoward accidents at site. He graduated from Mapua Institute of Technology with the degree BS Electrical Engineering with good scholastic background and passed the Board of Electrical Engineering Licensure immediately after graduation.

Electrical System Protection Coordination: A Technical and Hands-On Workshop on Electrical Design Combined With Protection Coordination

Course Fee:

₱ 16,280.00

per person (inclusive of snacks, lunch, computer hands-on and certification)

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