Substation Automation Using PLC and Scada

2011

Abstract: The aim of this paper is to analyse the utilization and technological aspects of remote control systems and access in power substation automation with a focus on the IEC 61850 standard. This paper is divided into two main parts. At first we analyse the possibilities, protocols and technologies from the datanetworking point of view. Finally we present the solution for the power substation automation in the Czech Republic based on the IEC 61850standard.

International Journal of Applied Research, 2021

Introduction of SCADA system in Generation, Transmission and Distribution sectors of our electricity industry has changed the traditional way of doing our routine work in the industries. SCADA monitors the status of various equipment in the substations and sends control signals to the remote control equipment on a continuous basis. It gets the historical data of the substation and generates the alarms in the event of electrical accidents or faults. Most substations now utilize the SCAD system to monitor measurements, of relevant parameters for correction and regulation of end devices. Certain measurements, supervision, control, operation and protection functions are performed using the technology.. The problem of not controlling power substation properly by the conventional approach has made some areas not to have power supply as at the time they are meant to have it. That is the reason SCADA control of power substation applying programmable Logic Controllers is now adopted by power systems Engineers. It has improved the overall efficiency of operating power system components. The design is done by taking cognizance of the fact that a membership function for SCADA control is required. You can now proceed by designing a SCADA rule for controlling of power substation, training these rules in ANN, designing a visual basic model for SCADA control of power substation using PLC and designing a Simulink model for SCADA control of power substation using PLC. The result obtained when compared to the conventional one was 10% better.

2006 International Symposium on Industrial Embedded Systems, 2006

With the deregulation of power market and for providing better services to electric consumers, the current substation should be automated. In the past decade, new communications schemes have been designed and retrofitted into the substations by the utilities to integrate data from relays and Intelligent Electronic Devices (IEDs) and capitalize on the protection, control, metering, fault recording, communication functions available in digital devices. Generally, using station bus to connect all equipments inside the substation, except some primary equipments which are outsider substations such as MV/LV transformer and switchgears. For those outsider equipments, we propose using the REMPLI powerline communication (PLC) technologies to communicate with the substation. The simulation results have shown that the REMPLI PLC network guarantees the substation automation requirements.

In proceeding of: Electric Supply Industry in Transition: Issues and Prospects for Asia, 2004

The aim of this paper is to introduce two important issues when selecting new Intelligent Electronic Devices (IEDs) as a part of the substation automation system implementation, namely the evaluation means and new applications. For the evaluation purposes, several digital simulator applications are discussed together with the benefits obtained by utilizing the simulators. The evaluation of the IEDs prior to the purchase as well as in the field is described. Regarding implementation of new functions, the importance of the concept of data integration and information exchange is elaborated. It is pointed out that most of the new applications require unconventional use of data and information to yield specific benefits, which will justify the use of substation automation systems. The scope of the paper is restricted to discussion of various methodologies and generic tools and it is not aimed at discussing specific commercial products or services. In conclusion, the paper points out that the use of advanced IEDs and substation automation systems requires significantly different approach in evaluating and implementing the new solutions.

IRJET, 2023

Electricity plays an indispensable role in modern society as it powers almost every aspect of our lives. However, [6] with the increasing demand for energy, the importance of efficient and reliable power distribution systems has become more apparent. [2][4][6 The traditional power distribution system has several limitations, including inadequate monitoring and control capabilities, which can result in system failures and power outages. The power system comprises generating stations, transmission lines, and distribution systems. Load flows necessitate careful planning, monitoring, and controlling to ensure efficient operation and to minimize production costs. Each process has a distinct mechanism for acquiring data and controlling it. [1][5]Supervisory Control and Data Acquisition (SCADA) is a monitoring system that monitors numerous parameters in a substation. The proposed system's central control room is equipped with SCADA, which provides an intuitive interface for the operator to monitor and control the system. In the event of any abnormalities, the SCADA system displays real-time data and alerts the operator. Furthermore, the operator can remotely control the system using the SCADA system, increasing the system's flexibility and reducing response time in emergencies. This project replaces large control panels with a single PC, making it highly dynamic and cost-effective. The SCADA monitoring system does not experience mechanical wear and tear. The Programmable Logic Controller (PLC) serves as the system's brain. SCADA and PLC work in tandem to operate and control the power system remotely. This automatic network can manage loads, maintain quality, and detect electricity theft. The system also provides the operator with an overall view of the entire network. Pilferage points can be identified, and human errors that cause tripping can be eliminated, increasing reliability and lowering operating costs. Our project integrates network monitoring functions with geographic mapping and fault location to provide a comprehensive power distribution system.

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.

2006

Abstract The adoption of the substation automation (SA) technology for the grids and substations is been increasingly used by the different power utilities all over the world.

IRJET, 2022

There is a need for a high-performance, flexible substation automation system (SAS) that is easy to incorporate. The increasing use of Intelligent Electronic Devices (IEDs) in substation protection, coordination, control, monitoring, metering, and testing offers interoperability and enhanced communications capabilities. The IEC Technical Committee 57 worked to create IEC 61850, an open standard for substation modelling and communications. The international adoption of the standard has grown in popularity. This article explores the use of IEC 61850 in conventional substation automation. It introduces the experience of a real SAS modernization scenario. This instance emphasizes how useful the IEC 61850 is for operating and monitoring substations.

In this paper, the authors describe some important feature of IEC 61850 as an international communication standard in substation automation system, that separate this standard from other communication standard in substation.

2010

Abstract: The aim of this paper is to explore some aspects of utilization traditional computer networks in power substation automation. This paper is divided into two main parts. First we analyse the interconnection between IEC61850 standard, TCP/IP network stack and ethernet technologies. Second part of this paper presents proposed solution for substation automation in the Czech Republic in cooperation with the national distributor ČEPS, as Key-Words:-Substation, IEC 61850, remote access, network topology, security, network topology