摘要: This paper presents the applications of a supervisory control and data acquisition (SCADA) system in thermal power plants (TPPs). In fact, must take into account physiological cognitive features operator. The briefly discusses on one hand different steps application SCADA difficulties to manage other it three examples TPP Tunisia instrumentations measurements used. first is related counting natural gas, second supervision pumps vibrations third heavy fuel oil. Key words: SCADA, supervision, control, acquisition, plant.