Combining Web SCADA Software and Matlab-Simulink for Studying Wind-PV-Battery Power Systems Aryuanto Soetedjo 1 , Abraham Lomi 2 , Yusuf Ismail Nakhoda 3 and Yohan Pramono Tosadu 4 1 Electrical Engineeering Department, National Institute of Technology (ITN) Malang, Indonesia 2 Electrical Engineering Department, National Institute of Technology (ITN) Malang, Indonesia 3 Electrical Engineering Department, National Institute of Technology (ITN) Malang, Indonesia 4 Electrical Engineering Department, National Institute of Technology (ITN) Malang, Indonesia Abstract This paper presents a Web-based SCADA connected to the hybrid power system simulated using Matlab-Simulink. The proposed Web SCADA controls the hybrid power system by connecting/disconnecting the renewable energy resources and load to the bus. It monitors the environment conditions, such as solar irradiation, temperature of PV module, wind speed, and electrical parameters (current, voltage, and power) of hybrid power system. The communication between SCADA server and Simulink model is performed by serial communication using Modbus protocol. The experimental results show that the proposed system achieved the goal, i.e. allowing the Web SCADA system to access the simulated hybrid power system modeled by Simulink in real time. Keywords: Web SCADA, wind power, PV, hybrid power system, Simulink, Modbus. 1. Introduction Recently, the development and exploration of the renewable energy resources increase significantly. Among them, the wind and solar power systems are the most popular ones, due to their availibility. The prominent characteristic of those power systems is the location dependent, in the sense that the wind power plant should be installed in the place where there is enough wind speed, while the solar power plant requires large space to absorb the sun energy. Usually they are installed in rural area and located separately. Therefore it requires a SCADA (Supervisory Control and Data Acquisition) system to monitor and control them remotely [1-5]. In [1], they proposed a SCADA system to monitor the real-time electrical data of wind-PV-battery renewable energy system. In the system, a PLC (Programmable Logic Controller) and digital power meters are employed as remote controller and measurement devices. The data from remote devices are sent to the monitoring center using intranet. A SCADA system is used to monitor and detect the failure of wind turbine [2]. The wind turbine failure is detected by observing the anomaly data from several measurements. In [3], they presented the SCADA system used to monitor and control both individual wind turbine and whole wind farm. With SCADA, user might modify the parameters of wind energy converter and voltage control system which are important to optimize the power system operation. In [4], the SCADA is developed for sun-tracker system, which enables the operator to view the actual position of the tracker system and the actual solar power. Due to the rapid development in IT fields, especially Internet, the web-based automation becomes a recent development in the industry [5]. Web SCADA is one of the web-based automation which utilizes Internet to supervise and monitor the remote devices. The advantages of Web SCADA are [6] : a) Easy to operate using the standard browser navigation tools; b) The implementation cost will generally lower than the traditional one. This paper describes a novel method to combine a Web SCADA software (IntegraXor[7]) and the popular simulation software (Matlab-Simulink) for studying the wind-PV-battery power system. Instead of using the real power plants, the Simulink model of hybrid power system is modeled and connected to the SCADA software via serial connection. The Modbus protocol is employed for communicating the SCADA and Simulink. In the IJCSI International Journal of Computer Science Issues, Vol. 10, Issue 2, No 2, March 2013 ISSN (Print): 1694-0814 | ISSN (Online): 1694-0784 www.IJCSI.org 51 Copyright (c) 2013 International Journal of Computer Science Issues. All Rights Reserved.