25 th International Conference on Electricity Distribution Madrid, 3-6 June 2019 Paper n° 1109 IEC 61850 GOOSE MESSAGING APPLICATIONS IN DISTRIBUTION NETWORK PROTECTION AND AUTOMATION Maciej GREBLA Jaya R A K YELLAJOSULA NTNU – Norway MTU - USA maciej.grebla@ntnu.no jyellajo@mtu.edu Hans Kristian HØIDALEN Jorun Irene MARVIK NTNU - Norway SINTEF – Norway hans.hoidalen@ntnu.no jorun.irene.marvik@sintef.no ABSTRACT Introducing distributed generators into distribution networks creates problems for protection systems like electric island formations or protection blinding. Possible solutions utilizing communication aided automation in IEC 61850 standard are presented in following paper. A hybrid adaptive islanding detection method and advanced network automation features in form of adaptive protection and distribution management system (DMS) are demonstrated. The results obtained through hardware-in-the-loop simulations using OPAL-RT simulator and SEL 421 relays show that presented functionalities can augment overall microgrid reliability. INTRODUCTION An uprising global trend towards shifting production of electric energy from conventional sources like coal, fossil fuels or nuclear energy to renewable sources like wind, solar or other non-conventional sources is evident from the recent development and this leads to a paradigm shift in basic power system operational principles. Traditional power system requires higher costs in transmission line expansion, fuel costs and time-consuming construction [1]. The concept of microgrid is introduced to counteract the above mentioned problems. A microgrid is an amalgamation of different equipment, which includes Distributed Energy Resources (DERs), smart meters, current/voltage transformers, and intelligent electronic device (IED) used for protection and communication/network routers [1] [2]. One of the major advantage of a microgrid the possibility to operate in both grid connected and islanded mode. Islanding is a phenomenon of separating a section of the grid for the benefits of operation, stability and/or economic aspects [3]. Communication assisted islanding detection has been proposed in references [4-7], these discuss use of IEC 61850 based communication topology for islanding detection and implementation of different islanding detection schemes using commercially available IEDs. The IEC-61850 standard has been introduced in 2003 and it has been constantly improving to cover more aspects of the future energy systems. The standard initial goal is to provide an interoperable substation automation system and over the years the developments has lead the standard to implement the changes in recent developments such as integrating electric vehicle (EV), DERs, synchrophasor, and control centers through various technical reports IEC 61850-7-420, 90-1,2 and 5 [8]. This paper proposes an adaptive islanding detection algorithm with the use of IEC61850 based Generic Object Oriented Substation Event (GOOSE) messaging and to optimize the non-detection zone for local passive method. The proposed method is realized using Opal-RT real-time simulator and SEL 421 relay. Secondly, it demonstrates potential applications of GOOSE messaging in distribution networks’ protection and automation. The rest of the paper is organized as follow, section II provides background of power system protection and automation, section III gives details about network modeling, section IV outlines simulation cases and associated results to support the proposed algorithm and finally conclusions are provided in section V. POWER SYSTEM PROTECTION AND AUTOMATION IEC 61850 is a standard defining a set of communication protocols and abstract data models for IEDs. It provides interoperability and simple architecture. IEC 61850-8-1 CIRED 2019 1/5