Thursday: Afternoon Technical Seminars

Thursday: Afternoon Technical Seminars

1:15 PM-5:00 PM
Arc-Flash Workshop

Speakers: Jim Chastain and Greg Pagello, EasyPower LLC

During this 4-hour workshop attendees will learn about the potential dangers and causes of arc flash incidents, the guidelines and standards that regulate their safety, and the often overlooked factor which creates what he calls the Arc Flash Paradox. This will include an introduction to the new IEEE 1584-2018 standard for arc flash calculations.

The instructor will then walk through the basic steps of conducting an arc flash study using digital analysis tools. In the hands-on portions, the attendees will follow the instructor in a step by step approach as they build a one-line diagram and then conduct the analysis. Each attendee will receive a two-week license of the complete EasyPower suite of tools to be installed on their personal laptops prior to attending the workshop. Special focus will be on protective device coordination and how to mitigate safety hazards and improve plant operations.

Each attendee should bring a laptop and a mouse to fully participate in the workshop exercises. If attendees sign up at least two weeks prior to the seminar, you will be sent an email with the license and the link to download the two-week trail software. This is especially import for attendees who will need IT approval or help to install software on their laptop. Examples files (pre-drawn one-lines, supplied on a USB stick) will be provided to allow students to analyze more complex systems without starting from scratch, including the following:

  • Arc Flash Paradox
  • Equipment Duty Analysis
  • Short Circuit Study
  • Arc Flash Analysis
  • Creating Reports and Labels
  • Protective Device Coordination
  • Scenario Manager (comparing results from different system configurations)
  • Differential Relays
  • Maintenance Mode for LVPCB
  • Light sensitive Arc Flash Relays
  • … and more.

1:15 PM-5:00 PM
Primer on Transformer Diagnostic Testing

Speakers: Charles Sweetser and Brandon Dupuis, OMICRON electronics Corp. USA

Transformers are the largest, most expensive, and highly critical components of most utility substations.  In order to ensure a long, useful service life, it is critical that a power transformer and its ancillary components are tested regularly for incipient fault modes. This seminar focuses on how diagnostic techniques can be applied to power transformers as part of the standard condition assessment protocol. The audience will be provided with an understanding, application, and analysis of these tests, supported by specially selected case studies validating the value that these diagnostic tests bring to testing, and finally assessing, power transformers. These specific diagnostic tests have been selected as the primary focus for this seminar and discussion.

  • Power Factor
  • Exciting Current
  • Turns/Voltage Ratio
  • Leakage Reactance
  • SFRA
  • DC Winding Resistance
  • Demag

1:15 PM-5:00 PM
Gas Insulated Switchgear: Best Practices & Considerations

Speakers: Sean Parsi, Dexotech, Inc.

Gas-insulated high-voltage switchgear (GIS) is a compact metal encapsulated switchgear consisting of high-voltage components such as circuit-breakers and disconnectors, which can be safely operated in confined spaces. GIS technology is excellent for applications where space is limited, reliability needs are high and maintenance needs are low. GIS technology is wide spread in the world however due to a variety of reasons, North American utilities have been a bit reluctant to fully adopt the technology.  This reluctance is slowly diminishing, and GIS projects are on the rise.  Given the relative novelty of the technology, an adjustment period involving exposure and training will be needed for the industry to fully embrace this technology. Hence by popular demand, this 4-hour workshop has been designed to provide in depth familiarity with High Voltage GIS technology for EPC contractors, commissioning professionals, user engineers and operators. Participants will leave with a fundamental understanding of:

  • HV GIS basics
  • GIS components
  • Review of applicable guides and standards
  • Field installation, case study and best practices
  • Testing & Commissioning, best practices
  • AC High Voltage Testing and Partial Discharge measurements
  • Interface testing concerns (cables, transformer and metering devices)
  • Operations and monitoring
  • SF6 Safety and environmental considerations

This workshop contains 170 colorful and photo rich slides and is well-coordinated.  The workshop has been specifically designed to be mid-level technical, to engage all audiences and be effective.

The workshop will be conducted by Sean Parsi P.E. Sean is the Managing Director of Dexotech Inc, a specialty testing and engineering company mainly concentrating on high voltage diagnostics, condition assessment and forensics with specialties in switchgear systems. Sean is a contributing member of Cigre D.166(Partial Discharge Monitoring of GIS), IEEE-Substations K0(GIS) , IEEE-Switchgear and  Vice Chair of IEEE C37.301(standard for Partial Discharge testing and assessment of switchgear assemblies above 1kV). Sean has been directly involved with GIS technologies for over 15 years, with experience in construction and commissioning of over 50 substations across the globe as well as many more HV GIS commission and Partial Discharge assessment projects

1:15 PM-5:00 PM
Overall Instrument Transformer Condition Assessment – Field Practices

Speakers: Diego Robalino and Dinesh Chhajer, Megger

In this seminar, we will cover the electric and dielectric diagnostics of instrument transformers in the field, discuss the application of current and voltage transformers, and analyze the best field testing practices as described by NETA and IEEE.

Instrument transformers in the field serve two main purposes: metering and protection. They have a complexity of applications, and like any other electrical device, they are susceptible to failure.

It is important for end users to understand the construction, classification and nameplate information of instrument transformers. This fundamental information allows correct selection of the appropriate device for coordination and protection of the power system. The understanding of the purpose of each device and the testing practices used in the field to verify its correct operation in the metering or protection scheme secures reliable and safe transfer of electric power.

Attendees will benefit from theoretical information discussed during the seminar as well as from the field data summarized in case studies.