INTERNATIONAL JOURNAL OF ADVANCED SCIENTIFIC RESEARCH AND INNOVATION ISSN: 2785-9541 VOLUME 5, ISSUE 1, 2022, 1 – 15. www.egyptfuture.org/ojs/ 1 Methodology of Analysis and Supervision of the Water Extraction in a Thermal Power Plant MLOUHI Yosra 1 , LAKHOUA Mohamed Najeh 2 , JABRI Imed 1 , BATTIKH Tahar 1 1 Research Laboratory Information and Communication Technologies & Electrical Engineering, LATICE, 1 National Superior School of Engineering, University of Tunis, Tunisia Research Laboratory Smart Electricity & ICT, SEICT, 2 National Engineering School of Carthage, University of Carthage, Tunisia Abstract. The aim of this paper is to analysis the water treatment process in a thermal power plant (TPP). In fact, we present an application of a supervisory control and data acquisition (SCADA) system. Thus, an example of a SCADA system of the Center of RADES in Tunisia was presented. Our contribution in this work consists in the analysis of the water loss in the TPP on the one hand and the supervision of the water extraction circuit using the SCADA system, on the other hand. Keywords: Water extraction; water loss; thermal power plant; SCADA. 1. Introduction Every day, we use the electric energy without even to be conscious of it. The electric energy serves in all domains including those where we think that it is not used (central heating of gas, thermal motor-driven vehicles...).