APP 311L: SEL-311L Line Current Differential Relay

APP 311L provides comprehensive application training for the SEL-311L Line Current Differential Relay, which offers complete line current differential protection with full scheme distance backup. In groups of two, students gain hands-on experience in communicating, metering, monitoring, commissioning, analyzing event reports, and performing control functions by working directly with the SEL-311L Relay.

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Audience

This course is designed for utility and industrial protection engineers and power system consultants.

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Agenda

Day 1

• Applying Line Current Differential Protection With the SEL-311L
• SEL-311L Line Current Differential Settings
• SEL-311L Current Differential Channel Monitoring and Settings
• Differential Protection Relay Word Elements
• SELOGIC Control Equations: Ways to Implement and Document Relay Control Schemes
• SEL-311L Relay Communications
• Using acSELerator QuickSet SEL-5030 Software With the SEL-311L Relay
• SEL-311L Trip Logic and Communications-Assisted Tripping Schemes
• SEL-311L Relay Setting Example: Two-Terminal Line

Day 2

• Metering and Monitoring Functions
• SEL-311L Line Current Differential Relay Simplifies Commissioning Tests
• SEL-311L Hands-On Training
• Event Reporting
• Frequently Asked Questions
• SEL-311L Relay Backup Protection
• SEL Mirrored Bits Communications

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Learning Outcomes

At the conclusion of this course, students can:

• Calculate and apply settings for line current differential protection.
• Set the SEL-311L relay using HyperTerminal and acSELerator QuickSet.
• Use SELogic control equations to customize the relay logic.
• Apply backup protection, reclosing, and synchronism-check features of the SEL-311L Relay.
• Analyze Sequential Events Recorder (SER) reports.
• Implement relay-to-relay logic communications via the Mirrored Bits communications protocol.

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Student Background and Knowledge

Before you attend this class, we recommend that you:

• Have basic familiarity with protective relaying, SELogic control equations, QuickSet, front-panel controls, and the SEL-4000 Relay Test System.
• Complete CBT 101: Introduction to SEL Relays.

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Course Preparation

Install or update the following software/files on the laptop you are bringing to class:

• acSELerator QuickSet SEL-5030 Software (include all device drivers during installation).
• SEL-C662 USB driver.
• SEL-311L instruction manual.
• SEL-5401 Software.

Please ensure that your laptop does not have any installation blocks before you come to class.