TST 107: SEL Transmission Substation Relay Testing

TST 107 covers skills required to enter settings, test, commission, and troubleshoot this class of SEL relays. Students will:

• Review skills required to work with SEL relays.
• Learn about specific transmission relay testing considerations.
• Practice skills through working with different relays throughout the course.
• Gain familiarity with the operating principles of each type of relay.
• Explore the features of SEL relay technology to make appropriate choices when designing test routines.

SEL equipment will be used during the training, including transformer protection (SEL-487E), distance and directional (SEL-421), and advanced line current differential (SEL-411L) relays.

Audience

This course is intended for relay technicians or protection engineers and system consultants with an interest in relay testing.

Agenda

Day 1

• Introduction to Relay Testing
• SELogic Control Equations
• Using acSELerator QuickSet SEL-5030 Software
• Introduction to the SEL-411L
• Using the SEL-5401 Test System Software
• SEL-411L: 500 kV Example Transmission Line (includes a class exercise)
• SEL-411L Overcurrent, Time-Overcurrent, and Directional Element Testing: Overcurrent and Directional (includes class exercises)
• SEL-411L Distance Element Testing (includes a class exercise)
• Data Capture and Event Reports
• Enhanced Mirrored Bits Communications

Day 2

• 87L Functions in the SEL-411L Relay: Introduction
• SEL-411L Channel Requirements: Logic, Master, Slave, and Loss of Protection
• SEL-411L: Communications Channel Verification Hands-On Exercise
• SEL-411L 87L Element Logic
• Testing the SEL-411L: 87L Test Modes
• SEL-411L: Hands-On Testing Exercise
• SEL-411L: Commissioning an 87L Relay System
• SEL-411L Internal Faults Hands-On Exercise (optional)
• SEL-411L External Fault Hands-On Exercise (optional)

Day 3

• SEL-487E Relay Introduction
• SEL-487E Metering Exercise
• Introduction to Differential Testing
• Single-Phase Testing of the SEL-487E Differential Element Without State Simulation (includes a class exercise)
• Single-Phase Testing of the SEL-487E Restricted Earth Fault (REF) Element (includes a class exercise)
• Commissioning Assistant (includes a class exercise)

Course Objectives

At the conclusion of this course, students can:

• Establish a serial communications link with an SEL relay using HyperTerminal and SEL software.
• Enter settings into an SEL relay.
• Equate Relay Word bits and SELogic control equations to traditional relay element outputs and discrete contact logic.
• Test, commission, and troubleshoot using metering, sequential events recording, and event reporting features of SEL relays.
• Analyze information recorded by the relay using SEL software.
• Calculate relay test points to verify response.
• Find information in the SEL relay instruction manuals.
• Understand differential relay concepts and determine appropriate test values.

Student Background and Knowledge

Before you attend this class, we recommend that you:

• Complete TST 101: SEL Relay Testing Basics OR have experience testing protective relays.
• Complete CBT 101: Introduction to SEL Relays OR be familiar with protective relaying, SELogic control equations, front-panel controls, and the SEL-4000 Relay Test System.
• Have the ability to set up a communications session.