Mane S. B., Doshi Twinkle; International Journal of Advance Research, Ideas and Innovations in Technology © 2018, www.IJARIIT.com All Rights Reserved Page | 682 ISSN: 2454-132X Impact factor: 4.295 (Volume 4, Issue 5) Available online at: www.ijariit.com Implementation of Substation Automation Systems using IEC 61850 S. B. Mane sandipbm85@gmail.com Babaria Institute of Technology, GTU, Vadodara, Gujarat Twinkle Doshi twinkledoshi.ec@bitseducampus.ac.in Babaria Institute of Technology, GTU, Vadodara, Gujarat ABSTRACT Electric power system substations are being modernized to better serve user requirements for more efficient communication and more comprehensive protection and to facilitate future expansion by installing and applying higher- performance IEDs. There is a demand for a substation automation system (SAS) that is simple to integrate and provides high performance and flexibility. IEC 61850 capacities provide interoperability and advanced communications capabilities in substation protection, coordination, control, monitoring, metering, and testing. IEC 61850 is the result of the efforts of IEC Technical Committee 57 (TC57) to produce an open standard for substation modeling and communications. Substation configuration description language (SCL) is used in IEC61850-based substations to create substation configuration description files that contain full information about the substation. The main purpose of this format is to ensure that IED capability and substation descriptions are exchanged in a compatible way between the IEDs. Keywords— IEC 61850, Substation Automation 1. INTRODUCTION IEC 61850 emerges as the promising protocol for the future smart grid. It was designed to ensure interoperability of the communication between Intelligent Electronic Devices (IEDs) in substation automation systems. An IED is the microprocessor-based device that performs several protective, control, and similar functions. The main idea of IEC 61850 to break down the functions of IEDs into core functions called Logical Nodes (LNs). Several logical nodes can be grouped into a Logical Device (LD) which provides communication access point of IEDs. By standardizing the common information model for each LN and the associated services, IEC 61850 provides the interoperability among IEDs of different manufacturers in substation automation systems. [1][5] 2. PROBLEM STATEMENT  No existing standard for serial communication in substation automation  Proprietary standards having local/narrow functional scope  Fast technology changes  Proprietary standards usually define communication on physical and link layers which are sensitive to changes  High reliability  Interoperability issues and testing 3. OBJECTIVES  Designing a communication network topology for substation automation  Modeling substation electrical components  Applying IEC 61850 services for SAS 4. STANDARDIZED APPROACH IEC 61850 provides a huge variety of communication functions which allow tele control, tele protection, supervision and monitoring between different IEDs in an electric power system. The standardization approach of the IEC 61850 series as mentioned in IEC 61850-part 1 is to blend the strength of three methods:  Functional decomposition: is used to understand the logical relationship between components of a distributed function which is decomposed and represented as Logical Nodes (LNs)  Data flow modeling: is used to understand the communication interfaces that must support the exchange of information between distributed functional components and the functional performance requirements.  Information modeling: is used to define the abstract syntax and semantics of the information exchanged In short, IEC 61850 decomposes and standardizes the functions as logical nodes, classified the communication interfaces between different functional levels and models the information exchange in term of data objects, data attributes, and abstract communication services. 5. CONTENT OF IEC 61850 Part 1: Introduction and Overview Part 2: Glossary Part 3: General Requirements Part 4: System and Project Management