Web-based technologies in power plant automation and SCADA systems: A review and evaluation (original) (raw)

Web Based Interactive Embedded Power Plant Management System

In this project, the low operational cost but flexible web based power plant automation system is controlled and monitored. The main core of the system is an embedded hardware device. The embedded device communicates through internet which makes it accessible from anywhere in the world through a web server built into the device. In addition, internet provides a bidire ctional real - time data transfer allowing interaction. The system is implemented for power plant automation by attaching several real - time modules through appropriate interfaces. The purpose of web is to provide a facility to observe and control the power system from anywhere in the world. Data acquisition system plays an important role in the field of control.

Development of web based SCADA application for monitoring parameter of transformer

Now a day's SCADA system is used for Industrial application, Home automation, Green house automation, Power generation and Distribution. Generally these SCADA applications include level monitoring light and climate control security system. With new hardware and software technologies here a system is developed which can perform the similar to SCADA application at a lower cost and lower maintenance. This paper proposed viable solution for SCADA system which include application like water level monitoring, transformer temperature monitoring, displacement control, and oil level monitoring. This system can not only perform these industrial applications but also proposed a fine Web-based solution to access all these acquired data and equipment's. Here a web-based application is used which will allow the user to access the inter-organizational data or equipment in industries via internet. It also overcomes the problem of weak encryption used by the SCADA. A wireless based solution has universally accepted familiar and user friendly. The real time logging would allow warning to be flagged to the relevant person via alarm indication and massage through web service. This paper describes the design of an Web based SCADA system that allows real-time factory data to be made available to the necessary personnel, regardless of where they may be on the globe. The system developed is based around an HTTP Web Service written in Visual Basic .NET. The Web Service accepts client requests and retrieves the desired information from the control database.

Architecture of a Web-Based Power SCADA System Using J2EE Technology

IFIP International Federation for Information Processing

With the deregulation of the electrical power industry, there is a strong need for power SCADA system to interoperate with other information systems. The inleroperation between SCADA and all other systems not only needs the information sharing, but also the business-or transaction-based information integration. This paper presents a Web-based architecture for power SCADA system, which is a multi-tier distributed framework using J2EE technology. This architecture combines pervasive browser with flexible user-specified application client, supports Web-service integration and transaction control, and provides a unified security policy. With the advantages of J2EE platform, this new Web-based SCADA system seamlessly integrates traditional SCADA with the enterprise information system, and exhibits more flexibility, scalability, and security than precious Web-browsing-only SCADA system.

SCADA system for a central heating and power plant

Modern process control systems are used in industrial automations for flexibility, modularity and reliability, employing state of the art technology based on three concepts: distributed control system (DCS), programmable logic controller (PLC) and most importantly supervisory control and data acquisition (SCADA). This paper deals with design and implementation of a SCADA system for a central heating and power plant, which is planned to supervise and control field distributed electric devices using Siemens equipment and software ldquoprocess control system 7rdquo (PCS7). The system also allows web-based applications via OPC and Web server by using the existing communication infrastructure. Redundancy is present at the server levels. The system is currently in use at COLTERM Central Heating and Power Plant South (CET South) of Timisoara.

Efficient Web-based Monitoring and Control System

Computer-based supervisory control and data acquisition (SCADA) systems have evolved over the past four decades, from standalone, compartmentalized operations into networked architectures that communicate across large distances. There is an emerging trend comprising SCADA and conventional IT units toward consolidating some overlapping activities. This trend is motivated by cost savings achieved by consolidating disparate platforms, networks, software, and maintenance tools. For reasons of efficiency, maintenance, economics, data acquisition, control platforms have migrated from isolated in-plant networks using proprietary hardware and software to PC-based systems using standard software, network protocols, and the Internet. In this paper, we present a new approach for web based SCADA systems that adapt to the behavior of the target application. In addition, we take into account the real time constraints that imposed by the nature of the problem. We show that our approach is more efficient than other approaches in terms of consuming as little as possible of the available resources (computational power and network bandwidth).

Review on the Design of Web Based SCADA Systems Based on OPC DA Protocol

One of the most familiar SCADA (supervisory control and data acquisition) application protocols now is OPC protocol. This interface is supported by almost all SCADA, visualization, and process control systems. There are many research efforts tried to design and implement an approach to access an OPC DA server through the Internet. To achieve this goal they used diverse of modern IT technologies like XML, Webservices, Java and AJAX. In this paper, we present a complete classification of the different approaches introduced in the litrature. A comparative study is also introduced. Finally we study the feasibilty of the realization of these approaches based on the real time constraints imposed by the nature of the problem.

Reengineering of Economic Operation of a Thermal Power Plant based on Multi-Tier Web Architecture

The absence of central control office in the deregulated and restructured power system sets a new range of challenges to their organization and functioning. The basic parameters in the operation of power sector, at high level, are distribution of operation over large geographical area, human factor's dominance and huge size of problem dimensionality. Currently power system operation in vertically integrated utilities is rely on the concept of central dispatch office (CDO), which itself is based on supervisory control and data acquisition (SCADA) system for transportation of data to CDO. For the stability of a power system, data received in CDO is useful but for short-term economic operation it's of little valued. The scope of this paper is to build a new IT based mechanism to collect and utilize the information that is being generated by pertinent system components. A Web based system is designed and developed using XAMPP [V 3.2.1] (Operating system, Apache web server, MySQL, PHP in a single package) for processing the generated data of a thermal units/IPP. Several " Processes " are developed and incorporated in this intelligent database system. Subsequently the output parameters are transferred to the center dispatch office (CDO) in the form of a smart database transaction to participate in online economic dispatch process. Apache Web server is used for front-end user interface development. PHP is used as programming language for developing Web homepage behind all interfaces for posting and retrieval of data from MySQL database.

Web based multilayered distributed SCADA/HMI system in refinery application

Computer Standards & Interfaces, 2009

The paper describes system synthesis and architecture of a multilayered distributed SCADA/HMI system. The system is used for monitoring and control of refinery terminals for truck loading and oil products pipeline shipping. Network-centered, distributed PLC system with SCADA functions and several levels of fieldbuses, interconnected with the HMI part of the system is described first. Following is a brief description of the software tools used in the system design. Configuration and PLC controllers programming, data server configuration, operator panels design and way of managing the control system using a standard Web browser, e.g. Internet Explorer, are addressed. After examining the way specific customization is done, the paper focuses on establishing the link with icons on graphic panels that integrates all three levels of process control from Operator's panels.

AUTOMATION OF CONVENTIONAL TRANSMISSION SUBSTATION USING SCADA

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.