Automatic Control of Power Transfer System using PLC

Journal of emerging technologies and innovative research, 2018

As we have adopted the concept of interconnected power system, the role of substation is become more important. Substation connects generation station to the distributor or to the end consumer via transmission system depending upon the types of substation. Activities like switching of transmission lines, parameter measurement, fault detection and storing of historical data are carried out in each of the substation premises. Earlier time this all activities was carried out manually, as complexity of system increase the role of substation become crucial and we need to move towards the use of IEDs and Automation. Activities carried out at substation can broadly classify in to three term i.e. supervision, control and Data acquisition. In an automated substation this all three will done using Programmable Logic controller and SCADA. For system monitoring or supervision data is given to controllers from RTU. Control command according to system parameter is produced by PLC and SCADA provides a human machine interference. Substation automation systems make their control and monitoring possible in real time and maximize availability, reliability and safety of the system.

International Journal of Engineering Research and Technology (IJERT), 2014

https://www.ijert.org/automation-of-11kv-substation-using-plc-and-scada-at-gndec-ludhiana-a-case-study https://www.ijert.org/research/automation-of-11kv-substation-using-plc-and-scada-at-gndec-ludhiana-a-case-study-IJERTV3IS110830.pdf The paper presents the use of SCADA (Supervisory Control and Data Acquisition) and PLC (programmable logic controller) in substation for the purpose of automation. At the substation the power is managed between the generator set and the main incomer supply. In the power management, the control of low voltage and turn on the generator set automatically which is installed at the substation in case of low voltage and monitors all electrical parameters on PC by using SCADA is done. PLC is a programmable logic controller which controls the voltage in substation. SCADA define as a centralized system that control and monitor the whole substation. SCADA system interact with PLC for the implementation of whole process. The application implemented in PLC is on ladder logic using unity pro software and SCADA software used is vijeo citect .

International Journal of Engineering Research and Technology (IJERT), 2014

https://www.ijert.org/energy-management-system-using-plc-and-scada https://www.ijert.org/research/energy-management-system-using-plc-and-scada-IJERTV3IS110494.pdf This paper presents the load control in the industry during peak hours by using PLC and monitors all load parameters of the motors on PC by using SCADA. The Energy management is the highest demand of the organizations to reduce their energy cost.Conform to the regulatory requirements and improve their corporate image. The automation used in the industries has several benefits. To accomplish the automation in the industry we have knowledge of PLC and SCADA. PLC is a programmable logic controller which controls the load or machines in industry.PLC programming is done by using ladder logic. The overall automation of the industry is controlled by SCADA software. SCADA define as a centralized system that control and monitor the whole sites. SCADA is used for collecting the data from various sensors or machines and then monitor the proper functioning of the machines. Automation will make the industry safe, cheap, highly efficient and maintained free.

Electrical, Control and Communication Engineering, 2021

The protection of power system is an essential trait in a huge network to efficiently detect and isolate the sections undergoing faults or abnormal behaviour. The key components of a protection scheme include circuit breakers, relays, switchgears and fuses which employ communication from one station to another to achieve high-speed tripping. The automation of these components at the laboratory level using programmable logic controller (PLC) along with supervisory control and data acquisition (SCADA) system owns paramount importance for intelligent decision making, sensing, actuating, monitoring and maintaining the record in the host server. This paper discusses such a technique for conventional power system protection laboratory at a new level of development to promote a control system through PLC and SCADA. The control system has indication of over and under values of voltage, load and frequency, which can trigger malfunctioning of equipment and must be rectified. Furthermore, grou...

This paper discusses implementation of the next generation solution for power system control and monitoring. Due to rapid development in automation system, the remote operation, control and monitoring can be performed easily by adopting it to the earlier conventional power systems. This can be achieved by integration of conventional systems and modern technology SCADA. This study is about the automation of substation by integrating the existing conventional substation devices with new networked infrastructure SCADA which can perform automatic industrial tasks such as data acquisition, device control, monitoring and event recording of the overall transmission system network. This combination of technologies empowers a highly reliable, self-healing (auto-restoration) power system that responds rapidly to realtime events with appropriate actions. Automation does not just replace manual procedures but permits the power system to operate in a most efficient and optimal way, based on accurate information provided in a timely manner to the decision-making applications and devices. The daily operation, load management and system faults are monitored by the SCADA which improves the performance of overall transmission systems.

This paper deals with PLC based Electric power distribution control system which is an important part of electrical power systems in delivery of electricity to consumers. PLC in the distribution field allows utilities to implement flexible control of distribution systems, which can be used to enhance efficiency, reliability, and quality of electric service. Presently research and development efforts are focused in the areas of Aksum university revolution and application in the distribution automation to make distribution automation more intelligent, efficient and cost effective. This paper presents brief overview about the power distribution and transmission automation system. The application areas, advantages and commercially available products for the distribution system automation are also described in detail. It also discusses about the present implementation and current challenges in the distribution system automation. There are several reasons why we need power distribution automation systems or plc based power distribution control system. These reasons are problems which are faced due to human control system in Aksum University those are less reliable in efficiency, more power consumption, high cost effect, less quality and unsafely operation and faults such as over voltage fault, under voltage fault, over current fault, under current fault, over temperature fault, phase to phase fault and phase to ground that exist in power distribution system in AKU at every block is difficult to control by somebody (operator). Therefore, we have designed plc based power distribution control system to solve these problems which are explained above.

The aim of this paper is, firstly, to recall the basic concepts of SCADA (Supervisory Control and Data Acquisition) systems, and how Scada plays an important role in the field of power system. for the study of electrical power distribution system we need general set-up of automated power distribution laboratory in which we need the set-up of one generator panel, one transmission line panel, one receiving end panel and one Simatic s7 300 PLC System. a versatile distribution system simulator is developed which replicates the behavior of a distribution network as viewed from a computer based control centre.

INTERNATIONAL JOURNAL OF RECENT TRENDS IN ENGINEERING & RESEARCH, 2019

Automation means Delegation of human control to machine. A PLC (Programmable Logic Controller) is a device that was invented to replace the necessary sequential relay circuits for machine control. A SCADA (Supervisory Control & Data Acquisition System) is used to control the process where person cannot go or stay for longer period. The aim of tis paper is to provide information about electricity can be generated from Renewable sources & how its transmission done using automation system. Renewable Energy consists of energy generated from natural and unlimited sources, which include wind, solar, biomass and hydroelectricity. Programmable logic controllers (PLC) can be used for control & automation in Distribution of Energy. The main reason for this is cost effectiveness. Various functions and controls can be achieved by programming the PLC.They can be used for full plant automation including governing of auto operation includes speed control, load control, excitation control, and level control automatic start/stop sequencing, gate control, start/stop of auxiliary systems, and protection requirement etc. Functions other than control like continuous monitoring, data recording, instrumentation and protections can also be performed. For remote operation, communication with PLC can be performed. For continuous monitoring purpose, a personal computer can be interfaced with PLC and continuous data can be recorded regularly. In this paper I used different methods for generation of electricity like wind, PV (photovoltaic), hydro, biogas & distributed using PLC & controlling using SCADA.

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.

Electricity switching control systems are basically used for supplying energy efficiently to a given load in building automation applications. The integration of mains power supply with solar power supply and diesel generator power supply is a key element in designing the electricity supply switching control system. This paper presents a real time prototype design and implementation of automatic control system for mains electricity power distribution to the load using Programmable Logic Controller (PLC)-Allen Bradley MicroLogix 1100, 1763-L1BBB. PLC is programmed using ladder diagram for intelligent switching of both solar power supply and diesel generator power supply units. Further, it is so programmed that solar power supply energy usage to the output power load exists, till the diesel generator power supply approaches to stable output. The Rockwell Software Logix 500 is used for programming a PLC, running on a host computer terminal. For completeness, the control program results are compared with a hardware interfacing module.