University of Mohaghegh Ardabili Journal of Operation and Automation in Power Engineering 2322-4576 10 1 2022 04 01 A Piecewise Linearization Approach to Non-Convex and Non-Smooth ‎Combined Heat and Power Economic Dispatch ارائه رویکردی تکه‌ای- خطی به‌ منظور حل مسأله پخش بار اقتصادی غیر محدب و ناهموار شامل منابع CHP 40 53 1176 10.22098/joape.2022.8065.1559 EN P. Hajiamosha Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran A. Rastgou Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran H. Abdi Electical Engineering Department , Engineering Faculty, Razi University, Kermanshah, Iran 0000-0002-7625-0036 S. Bahramara Department of Electrical Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran Journal Article 2020 11 26 <em>The important role of electricity generation in the power system is evident and is growing more and more with innovative technologies and requirements. Hence, addressing the combined heat and power economic dispatch (CHPED) as one of the relatively new issues in the power system operation and control is more importance. Since the CHPED problem is a non-smooth, highly non-linear, and non-convex one, it is required to solve it so that an optimal global solution can be achieved. In this paper, by applying the piece-wise linearization approach the CHPED problem is solved so that the problem reformulated to a quadratic optimization problem with linear and quadratic constraints. To demonstrate the applicability of the proposed model, four case studies are implemented in the GAMS software environment and the results compared to the literature.</em> Combined heat and power economic dispatch quadratic optimization piecewise linearization approach Non-convex problem https://joape.uma.ac.ir/article_1176_5bf8cc43d541d4bb35deefa86e3c7025.pdf