Digital Technologies for Protection and Communication
Irkutsk National Research Technical University (INRTU)
ABSTRACT
This course will focus on basic knowledge about digital technologies for protection and communication, basic standard of IEC61850. The subject is an important one within modern smart energy systems and is becoming especially relevant in power systems with growing amounts of conventional and RES. It forms a bridge between the power components, power-system control, and power-system information / communication technology. The topics are mostly selected from IEEE and CIGRE standards.
INTENDED LEARNING OUTCOMES
- to recognize SES protection philosophy including the design a substation automation system, selecting measurement devices.
- to explain the infrastructure of protection in SES and to design of protection scheme, on IEC 61850 standards.
- to summarize interactions between different components to secure different operating conditions, IEC 61850 architecture.
- to define required information flows and communication actors for different communication levels.
- to configure, coordinate and setup protection systems for SES based on IEC 61850 standards.
TEACHING TECHNIQUES
- Experiential learning
- Simulation-based learning
- Problem-based learning
- Case method
COURSE OUTLINE
Part 1. Introduction to digital technologies
1.1 What are digital technologies for protection and communication?
1.2 Basic knowledge of terminology about digital substation (Process level, Bay level, Station level, switch, busserver, dispatcher WP, bus channel, transfer system, GOOSE, MMS and sampled values (SV) etc.)
1.3 Overview of different architectures based on various standards and protocols (Profibus, Modbus, DNP 3.0, IEC 61850, IEC 60870, Ethernet, SCADA, RS485, RS232, etc.).
1.4 Types of connections (comport, RJ45, optical, etc.).
1.5 Modeling approach (information model), SCL language, services and protocols for data transfer
Types and describing of application software.
Part 2. IEC 61850 components and logic architecture
2.1 Introduction to IEC 61850.
2.2 History
2.3 Benefits of IEC 61850, advantages of IEC 61850 compared with other standards
2.4 Engineering Process, Data Model and Data Exchange Mechanisms
2.5 The Data Model
2.6 Architecture – basic
2.7 Traffic Patterns in IEC 61850 substations
2.8 Modelling of Multifunctional IEDs in IEC 61850
2.9 System Configuration Language
2.10 Cyber Security
Lab: IEC 61850 components and logic architecture
Lab 1. Tape of Components (difference devises, communication types and interfaces)
Lab 2. Software (introduction to the program software)
Lab 3. Digital network (creation of schemes of various topology)
Lab 4. Mapping (adjustment of equipment for the various schemes)
Part 3. IEC 61850 substation communication architecture in SES
3. 1 Contingency Requirements for Network Communication and Processing
3.2 Procedure for Specifying IEC 61850 based Protection Schemes
3.3 Logical Device Grouping/Hierarchy, Instance Modelling, Optimising DataSets: PTRC
3.4 Implementation of existing hardwired protection schemes into IEC 61850-8-1 station bus
3.4.1 Transmission Bus Protection- Directional Comparison Scheme
3.4.2 Transmission Line Protection
3.4.3 Transmission Line Protection- Breaker Failure Protection
3.4.4 Transmission Line Protection -Automatic reclosing (AR) for One Breaker
3.4.5 Transmission Line Protection: Check Sync for One or Two Breakers
3.4.6 Breaker Control IED
3.4.7 Distribution Feeder- Breaker Failure Protection Scheme for One or Two
3.4.8 Sympathetic Tripping or Blocking Scheme
3.4.9 Distribution bus protection
3.4.10 Feeder Interlocking and Substation Interlocking
3.4.11 Substation Control Lockout or Control Uniqueness
3.4.12 Under Frequency Load Shedding
3.5 Electromechanical Device Interface with IEC 61850 Semantics
3.6 Protection schemes based on both IEC 61850-8-1 and IEC 61850-9-2 (PROCESS BUS)
3.7 Requirements needed for IEC 61850 implementation
3.8 Testing and maintenance
Lab: IEC 61850 substation communication architecture in SES
Lab 5. Logic and operating modes of the intelligent network.
Lab 6. Network operation analysis
Lab 7. Simulation of fail situation
Lab 8. Drafting event Log
LIST OF REQUIRED LABORATORY EQUIPMENT
1 Test device (mobile ground fault detection)
2 Sensor (Device for detecting faults on power lines)
3 Physical model (Demonstration signal box)
4 Test Deviсe
5 Sensor for physical model (Overhead line fault indication device)
