Integrated Heat and Power Dispatch Model for Wind-CHP System with Solid Heat Storage Device Based on Robust Stochastic Theory
LI Huanhuan1, TAN Zhongfu1,2†, CHEN Hongtao3, GUO Hongwu11. School of Economics and Management, North China Electric Power University, Beijing 102206, China; 2. School of Economics and Management, Yan’an University, Yan’an 716000, Shaanxi, China; 3. East China Electric Power Test and Research Institute, Shanghai 200437, China
This paper built a combined heat and power (CHP) dispatch model for wind-CHP system with solid heat storage device (SHS) aiming at minimizing system coal consumption, and set system demand-supply balance and units’ operation conditions as the operation constraints. Furthermore, robust stochastic opti-mization theory was used to describe wind power output uncer-tainty. The simulation result showed that SHS increased CHP peak-valley shifting capability and reduced abandoned wind rate from 12% to 6%, and reduced 5% coal consumption, compared with the original system operation by flexible charging electric power and heating. The payback period of employing SHS in wind-CHP system is far shorter than SHS expected service life.
Key words:wind power; abandoned wind; solid electric heat storage device; combined heat and power (CHP); heat storage; robust stochastic optimization theory
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