Internet-Based SCADA Display System Bin Qiu,Hoay Beng Gooi, Yilu Liu,Eng Kiat Chan In the deregulated environment, information is the key to secure operation,profitability,customer retention,market advantage,and growth for the power industry EYEWIRE he operational and commercial needs of the power demand access,platform independence,and transaction industry require information systems to not only management for the design of the online SCADA display perform traditional functions but also support many system of the new functions,specifically to meet the needs of competition with deregulation.The rapid development Web-SCADA Background of the Internet and distributed computing have opened IT plays an increasingly important role in all fronts.In the the door for feasible and cost-effective solutions. deregulated environment,information becomes the key This article describes and demonstrates a unique to secure operation,profitability,customer retention. Internet-based application in a substation automation market advantage,and growth for the power industry. system that is implemented based on the existing system SCADA systems are essential parts of the distribution control and data aquisition (SCADA)system and very- management system(DMS)and energy management sys- large-scale integration (VLSD)information technologies tem (EMS)that employ a wide range of computer and (IT).The user can view the real-time data superimposed communication technologies.However,traditional on one-line diagrams generated automatically using VLSI SCADA communication is established mainly for intra- placement and routing techniques.In addition,the user company information exchange,especially for protec- can also control the operation of the substation at the tion and control.Low bandwidth and communication server site.The choice of Java technologies,such as Java isolation hinders information exchange and interopera- Native Interface (JND,Java Remote Method Invocation tion.Information sharing among different utilities or (RMD,and Enterprise Java Bean (EJB),offers unique and even individual divisions of the same utility is difficult, powerful features,such as zero client installation,on- complex,costly,and sometimes impossible.Deregula- tion results in mergers and consolidation,pushing for B.Qiu and Y.Liu are with Virginia Polytechnic Institute and State Uni- more extensive intra-and inter-utility information versity,Blacksburg.Virginia.H.B.Gooi is with Nanyang Technological exchange,integration,consolidation,dissemination,and University,Singapore.E.K.Chan is with Power Automation Pte,Ltd. open access.Intercompany communication and integra- Singapore. tion of data from various control centers,power plants, 14 IEEE Computer Applications in Power ISSN0895-0156/02/s17.002002IEEE14 IEEE Computer Applications in Power ISSN 0895-0156/02/$17.00©2002 IEEE T he operational and commercial needs of the power industry require information systems to not only perform traditional functions but also support many of the new functions, specifically to meet the needs of competition with deregulation. The rapid development of the Internet and distributed computing have opened the door for feasible and cost-effective solutions. This article describes and demonstrates a unique Internet-based application in a substation automation system that is implemented based on the existing system control and data aquisition (SCADA) system and very￾large-scale integration (VLSI) information technologies (IT). The user can view the real-time data superimposed on one-line diagrams generated automatically using VLSI placement and routing techniques. In addition, the user can also control the operation of the substation at the server site. The choice of Java technologies, such as Java Native Interface (JNI), Java Remote Method Invocation (RMI), and Enterprise Java Bean (EJB), offers unique and powerful features, such as zero client installation, on￾demand access, platform independence, and transaction management for the design of the online SCADA display system. Web-SCADA Background IT plays an increasingly important role in all fronts. In the deregulated environment, information becomes the key to secure operation, profitability, customer retention, market advantage, and growth for the power industry. SCADA systems are essential parts of the distribution management system (DMS) and energy management sys￾tem (EMS) that employ a wide range of computer and communication technologies. However, traditional SCADA communication is established mainly for intra￾company information exchange, especially for protec￾tion and control. Low bandwidth and communication isolation hinders information exchange and interopera￾tion. Information sharing among different utilities or even individual divisions of the same utility is difficult, complex, costly, and sometimes impossible. Deregula￾tion results in mergers and consolidation, pushing for more extensive intra- and inter-utility information exchange, integration, consolidation, dissemination, and open access. Intercompany communication and integra￾tion of data from various control centers, power plants, B. Qiu and Y. Liu are with Virginia Polytechnic Institute and State Uni￾versity, Blacksburg, Virginia. H.B. Gooi is with Nanyang Technological University, Singapore. E.K. Chan is with Power Automation Pte, Ltd, Singapore. Bin Qiu, Hoay Beng Gooi, Yilu Liu, Eng Kiat Chan © EYEWIRE In the deregulated environment, information is the key to secure operation, profitability, customer retention, market advantage, and growth for the power industry