Course Description:
This
course has been redeveloped to include additional materials including
photovoltaic systems and new DC Arc Flash methods based on Dan Doan's
IEEE paper and NFPA 70E
2018. This course is geared towards electrical power engineers
responsible for the design and analysis of DC systems
as well as managers responsible for reviewing and approving
studies. Join us and learn from the expert that developed the DC
Arc Flash equations that is used in the SKM software! Feel free to bring your own questions!
Discussions include an overview on commonly used DC
equipment and the application of the Power*Tools program to analyze
example DC electrical distribution systems. Battery sizing, load-flow,
short-circuit, protection, and DC arc flash studies will be reviewed
and then performed using the software.
Objectives:
Review of DC equipment (Batteries, PV, Rectifiers,
Inverters, and Loads)
DC Short Circuit calculations
DC Protection overview
Review of DC Arc Flash methods (Method to use based on application & limitations)
Provide practical DC system examples from typical industrial and commercial power systems with explanations of why the
study results are presented.
Discuss issues, examine study results and potential problem
areas.
Discuss considerations when selecting equipment, along with
explaining equipment datasheets.
Provide relevant information needed to successfully
complete a DC Systems study.
Typical Stationary Battery Supplied Power System Example
Review
of distribution system analysis topics including battery sizing,
battery charger sizing, time dependent load flow, and short-circuit
analysis.
Discussion of component characteristics and sources of data
Discussion of compliance with various standards
Discussion of considerations when selecting battery type
Typical Generator and Rectifier Supplied Power System Example
Discussion of equipment characteristics and sources of data
Review of distribution system analysis topics including load flow and short-circuit analysis
Examination and interpretation of PTW study results
Generator and Rectifier Supplied DC Distribution System
Examples of equipment data
Options for load flow and short circuit studies
Considerations applicable to large DC motors and generators
Interpretation of PTW equipment evaluation results
Analysis of Example Battery Supplied Distribution System
Examples of equipment data
Alternatives in battery sizing and load flow analysis
ANSI and IEC methods for short circuit analysis
Interpretation of PTW equipment results
Typical Lead-Acid and Nickel-Cadmium Battery Characteristic Example
Review and interpretation of manufacturer’s battery characteristic data
Entry of characteristic data into PTW Library
DC Arc Flash Example
Arc Flash calculations using NFPA 70E 2018 Annex D.5
Arc Flash calculations using Stokes - Oppenlander Method
Interpretation of PTW study results
Photovoltaic systems
Modeling of PV Arrays
Review of PV library (P-V and I-V curves)
Implementation of PV systems and interpretation of PTW study results
Other Topics
Discussion of methods and procedures on completing a typical study
Examination and interpretation of PTW study results and potential problem areas in a DC power system
Prerequisites:
Basic computer skills
SKM Power*Tools Standard 3-Day and Advanced 2-Day Training OR working knowledge of SKM PTW Software
Students are urged to review:
IEEE Brown Book Std 399 - 1997, chapter 16
IEEE 485 - 2010, “IEEE Recommended Practice for Sizing Lead-Acid Batteries for Stationary Applications”
IEEE
946 - 2004, “IEEE Recommended Practice for the Design of Safety-Related
DC Auxiliary Power Systems for Nuclear Power Generating Stations”
IEEE 1115 - 2000, “IEEE Recommended Practice for Sizing Nickel-Cadmium Batteries for Stationary Applications”
IEEE 1184 - 2006, “IEEE Guide for Batteries for Uninterruptible Power Supply Systems”
IEEE 1375 - 1998, “Guide for the Protection of Stationary Battery Systems”
IEC
Std 61660 Part 1, “Short Circuit Currents in D.C. Auxiliary
Installations In Power Plants and Substations, Part 1: Calculation of
Short-Circuit Currents”
IEEE 1584 2002/2004a, "Guide for Performing Arc Flash Hazard Calculations"
NFPA 70E, "Standard for Electrical Safety in the Workplace"
Course 206
DC Systems Analysis & Arc Flash Training
Course Hours
Web training: 7:00am-3:30pm Pacific Time.
Course Fees
Click Enroll button below to see latest fees.
Registration Fees Include
1 Training Manual.
SKM will provide the latest
version of the PTW software prior to the class for installation.
License key will be provided the week before the course.
Course Location
Web-Based Live Training - This online training will
be conducted live by a senior SKM engineer and other SKM engineers will
be available via chat or phone to assist with questions. The same
level of instruction, content, and practice projects will still be
covered as we normally do. Software
activation details will be provided as we get closer to the class. A
hardcopy training manual will be shipped about 10 days before the first
day of class. Student within the continental US qualify for free
shipping (UPS) of the hardcopy student manual. Students outside of the
US are responsible for delivery fees and duties and/or customs fees.
Live online training will be conducted using the GoToTraining platform.
We recommend using a Chrome browser for the instant join feature
without having to download and install extra software. Consider a
dual-monitor setup so that you can view the instructor’s screen while
performing hands-on exercises. Alternatively, you can join the meeting
on a tablet using GoToTraining’s app or use another computer next to
you.
Check your system compatibility before training begins here: https://support.goto.com/meeting/system-check
206 DC Systems Analysis & Arc Flash Training