This course is designed for engineers who are using ASPEN OneLiner to perform short circuit and relay coordination studies and wish to become more proficient in using the program. The course material is intended for users of all levels. The class will include hands-on training in System Modeling, Short Circuit Studies and Protective Equipment Studies.

Topics

• OneLiner user interface.

• Network modeling: Generators, transmission lines, transformers, MOV-protected series capacitors, zero sequence mutuals, and models of inverter based resources.

• Short circuit calculations: starting voltage assumptions, outaged and grounded lines, circulating current in wye-wye-delta transformer, phasor probe, simultaneous faults, batch fault simulation.

• Overcurrent, distance relay protections and logic scheme modeling.

• Plotting overcurrent relay curves, and conductor- and transformer-damage and inrush curves.

• Plotting distance relay characteristics.

• Plotting protective-device characteristics on the time-distance diagram.

• Importing relay data from SEL 5010, 5030 and other manufacturers' relay data files.

• System-wide relay coordination studies, automatic coordination checking functions.

• Tools for compliance with PRC-023-3, PRC-025-1, PRC-026 and PRC-027.

• Special applications: breaker rating module, arc-flash hazard calculator, stepped event simulation, fault location, export relay test file, boundary equivalent, ground current calculator.

• Network model and relay data management.

• Overview of OneLiner automation using Python.

Instructors

• Thanh Nguyen received his BS and MS degrees in Nuclear Power Engineering from Moscow Power Engineering Institute in Russia and a PhD degree in power system at the University of Wisconsin at Milwaukee. Thanh is a member of IEEE.

• Chris Weldy received a BS from Texas A&M, an MS from Georgia Tech, and a PhD from Baylor, all in electrical engineering. Prior to joining ASPEN, he worked in System Protection and System Planning at a utility for over 15 years, where he performed power system analysis and design, modeling and simulation, and software automation.

• Xu Zhang joined ASPEN as a power software developer after receiving a Ph.D. degree in Electrical Engineering from Illinois Institute of Technology. Xu is a Member of IEEE.

Accommodations

A block of rooms is reserved at the Embassy Suites Hotel at the rate of $179 plus tax per night. A full breakfast is included. Click on THIS LINK or call the hotel phone number +1-650-342-4600 and mention ASPEN ROOM BLOCK to make a reservation. Reserve your room by May 13 2025, in order to obtain the above rate. 

Transportation

The hotel is only a 5-minute drive from the San Francisco International airport (SFO). The hotel provides free shuttle service to and from the airport. The hotel shuttle runs regularly every 20 minutes.  Downtown San Francisco (for sightseeing) can be reached by train in 30 minutes. The hotel may be able to arrange a shuttle to take you to and from the train station. A car is optional.

Meals

The hotel provides a full breakfast daily. ASPEN will provide lunch on Tuesday and Wednesday, and also dinner on Wednesday.

lass time

Class will meet from 8:30am to 4:45pm on Tuesday and Wednesday, and from 8:30am to noon on Thursday.

Computer

You must bring a laptop (with Windows 10 or Windows 11) for hands-on sessions. We will send you a link to download the training software 10 days before the class starts. You will need Administrative privileges to install the training software. We recommend that you also bring a full-size mouse, unless you are comfortable with the laptop pointing device. ASPEN will provide program license keys.

Group Discount and Cancellation Policy

Call for discounted rate if your company is sending four or more people to this course.

If you cannot attend, another person from your company can come in your place. If you wish to cancel, we will refund the registration fee provided that you notify us by writing four weeks before the start date of the class.