An Approach to the Operation Modes and Strategies for Integrated Hybrid Parabolic Trough and Photovoltaic Solar Systems

Abstract

Concentrated solar power (CSP) and photovoltaic (PV) solar systems can be hybridized, creating synergies: on one hand procuring dispatchability by storing thermal energy, and on the other hand generating electricity at a highly competitive prize. In this paper, we present an approach to the operation strategies and modes for integrated hybrid CSP + PV systems. We focus on parabolic trough (PT) solar plants, especially those operating in the south of Spain. Our study consists in the definition of suitable states for each of the subsystems that constitute a hybrid solar plant. We then propose modes from the combination of suitable states and establish the conditions for the transition between modes depending on the operation strategy. We propose two operation strategies: demand coverage and base load production. The results of this paper can be used in decision making for hybrid solar system simulation programs.

Experimental Evaluation of the Thermoelectrical Performance of Photovoltaic-Thermal Systems with a Water-Cooled Heat Sink

“…The collector was found to became more evenly distributed in temperature when the main channel and subchannel diameter ratios increased, so that the channels with D/d = 4 could be 50% greater than those with D/d = 2. López-Álvarez et al [4] developed an operation-control algorithm for hybrid concentrated solar power (CSP) with solar PVs in the south of Spain and reported good retrofitting possibilities for the CSP plants in operation. Kim et al [5] showed that the building-integrated photovoltaic-thermal (BIPVT) system could produce 30 W more power than the BIPV system, and the maximum difference in temperature between BIPVT and BIPV was about 22 • C during the winter season.…”