A Novel Distance Estimation Technique for Single Line to Ground Fault in Electrical Transmission and Distribution Network Using Smart Meter

Abstract

In the modern electrical grid, accuracy and speed of fault clearance are the major challenges newlinewhich need to be addressed. This research includes a novice technique for locating single line newlineto ground fault in electrical transmission network. Validation of the developed algorithm is newlinedemonstrated using MATLAB Simulink. Simpower system tool box is used for the modeling newlineof smart meter, transmission lines and single line to ground fault (SLG). A novel method is newlinedeveloped to countercheck whether the fault has occurred really or not. Data related to SLG newlinefault has been collected and analyzed at various substations. Effect of harmonics on fault newlinecurrent measurement using smart meter is elaborated. Advancements in communication newlinetechnology are illustrated from asset management perspective. newlineThis research covers a case study of fault location techniques in electrical transmission newlinenetwork, using numeric relay and offline fault locator. Healthiness of electrical transmission newlineline is ensured using line signature analyzer. Comparative study of online and offline fault newlinelocation in electrical transmission network has been carried out and the inferences are drawn. newlineOn the basis data available it can be said that the frequency of occurrence of single line to newlineground fault is maximum (about 75%) among various types of faults. Data at 220 kV and 132 newlinekV substations has been collected and analyzed, keeping focus on single line to ground fault. newlineArchitecture of Substation Automation System (SAS) using single communication technology newlinebased on IEC 61850-8 and IEC 61850-9 is explained. Architecture consisting of numeric meter newlinewith Java Compilation Unit (JCU) and Ethernet switch standardized as per IEC 61850 is newlinedemonstrated. The Java source code to send indications to output port of numeric meter is newlineincluded. newlineSmart Grid concept ensures an efficient, reliable, and quality supply of electricity. Advanced newlineMetering Infrastructure (AMI) plays vital role in Outage Management System (OMS) of a newlinesmart Grid. An additional display parameter of a smart meter, which is fault current is newlinedemonstrated. newline newlineAlso, this research gives the guidelines about how to establish a connection between Client- newlineServer through a Java psudocode. The efforts have been taken to highlight the issues in the newline newlinetraditional fault locating techniques for Transmission and Distribution network. A newlinecommunication infrastructure is a part and parcel of the smart grid. Java code for pipelining newlineand transferring the data from numeric meter (Server) to numeric relay (Client) is stated. newline