Free download скачать High Impedance Restricted Earth Fault Protection Calculation
Last updated 7/2024
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz
Language: English | Size: 221.84 MB | Duration: 1h 0m
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What you'll learn
Basics of REF protection
REF scheme operation
Current transformer requirements
Calculations of REF relay
Requirements
Basics of electrical
Description
Welcome to "Mastering Calculations of Restricted Earth Fault (REF) Protection," an advanced online course tailored for electrical engineers, protection specialists, and technical professionals involved in the design, implementation, and maintenance of protective relay systems. This course provides an in-depth understanding of the calculations and principles underlying REF protection, ensuring you have the expertise to enhance system reliability and safety.Course Modules:1. IntroductionBegin with an overview of Restricted Earth Fault (REF) protection, its significance in electrical power systems, and the importance of accurate calculations to ensure effective protection.2. What is Differential Protection?Learn about the fundamentals of differential protection, its role in detecting faults within a specified zone, and how it differs from other types of protection schemes.3. Differences Between High and Low Impedance Differential ProtectionExplore the key differences between high impedance and low impedance differential protection schemes, including their applications, advantages, and limitations.4. Basic REF SchemeUnderstand the components and configuration of a basic REF protection scheme. Learn how these elements work together to provide reliable fault detection and isolation.5. Collection of CT DataDiscover the importance of accurate Current Transformer (CT) data collection. Learn the methods for gathering essential CT information required for REF protection calculations.6. Current Transformer RequirementsDelve into the specific requirements for CTs used in REF protection. Understand the critical parameters and characteristics that influence CT performance and protection accuracy.7. CT Class RequirementsGain insights into the various CT classes and their relevance to REF protection. Learn how to select the appropriate CT class to meet the protection scheme's requirements.8. Conditions for Stable REF ProtectionExplore the conditions necessary for achieving stable REF protection. Understand the factors that influence stability and how to ensure your protection scheme remains robust under different operating conditions.9. Calculation of Operating CurrentLearn how to calculate the operating current for REF protection. Understand the principles and formulas used to determine the appropriate operating current for reliable fault detection.10. Calculation of Stability VoltageUnderstand the importance of stability voltage in REF protection. Learn how to calculate stability voltage to ensure the protection scheme remains stable and avoids unnecessary tripping.11. Calculation of Stabilizing ResistorDiscover the role of the stabilizing resistor in REF protection schemes. Learn how to calculate the value of the stabilizing resistor to enhance protection stability and performance.12. Calculation of MetrosilUnderstand the function of Metrosil (a nonlinear resistor) in REF protection. Learn how to calculate and select the appropriate Metrosil to protect CTs from high transient voltages and ensure accurate operation of the protection scheme.Learning Outcomes:By the end of this course, participants will:Master the calculations and principles of Restricted Earth Fault (REF) protection.Understand the fundamentals and differences between high and low impedance differential protection.Design and implement a basic REF protection scheme.Collect and analyze essential Current Transformer (CT) data.Ensure CTs meet the necessary requirements and select the appropriate CT class.Identify and maintain the conditions for stable REF protection.Calculate operating current, stability voltage, stabilizing resistor, and Metrosil for effective REF protection.Target Audience:This course is ideal for:Electrical engineersProtection and control engineersSubstation and power system designersMaintenance engineersTechnical consultantsAnyone involved in the design, implementation, and maintenance of protective relay systemsEnroll now and gain the expertise to master the calculations of Restricted Earth Fault Protection, ensuring the safety and reliability of electrical power systems.
Overview
Section 1: Introduction
Lecture 1 Introduction
Section 2: Differential Protection
Lecture 2 Differential Protection
Section 3: High Vs Low REF Schemes
Lecture 3 High Vs Low REF Schemes
Section 4: REF Basics
Lecture 4 REF BASICS
Section 5: table REF Scheme
Lecture 5 table REF Scheme
Section 6: CT Data
Lecture 6 CT Data
Section 7: Operating Current Calculations
Lecture 7 Operating Current Calculations
Section 8: Required Stability Voltages
Lecture 8 Required Stability Voltages
Section 9: Stabilizing Resistor Value Calculations
Lecture 9 Stabilizing Resistor Value Calculations
Section 10: Metrosil Calculations
Lecture 10 Metrosil Calculations
Section 11: Stabilizing Resistor Specification Calculations
Lecture 11 Stabilizing Resistor Specification Calculations
Electrical engineers Protection and control engineers Substation and power system designers Maintenance engineers Technical consultants Anyone involved in the design, implementation, and maintenance of protective relay systems
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