Operational economic evaluation of hydro-wind-photovoltaic power generation system considering the vibration avoidance strategy
In order to evaluate the economic performance of hydropower units more comprehensively and accurately in the wind-solar-water hybrid power generation system,in this paper the life loss cost of hydropower units is in-cluded into the system operating cost,and an economic evaluation model of the target solar-hydro hybrid power generation system is established with the goal of minimum system operating cost,maximum power generation,and minimum power load deviation.Fully considering the differences in the operation strategies of hydropower units,the system economic characteristics and unit operation characteristics of the units under vibration isolation and non-vibra-tion isolation operation are compared.The model is solved based on the NSGA-Ⅱ intelligent optimization algo-rithm,and the economics of system operation under a typical wind and solar output scenario are analyzed by taking a clean energy base in China as an example.The research results show that,compared with the operation of hydro-power units without vibration avoidance,the hydro-wind-solar hybrid system adopting the vibration-avoidance op-eration mode reduces the average value of power generation and power-load deviation by 0.09％(0.02 GWh)and 2.10％(1.89MW)respectively,but the average system operating cost decreased by 0.24％(RMB 17,100 yuan).On the whole,in the case of no significant increase in power generation,although the performance of the non-vi-bration-proof operation mode is superior in terms of power and load deviation,the operating cost due to the fatigue loss of the unit increases significantly,and the safety problem of the unit is prominent,and its comprehensive eco-nomic performance is not as good as vibration-proof operation.This research has certain guiding significance for op-timizing the operation mode of hydropower units in the hydro-wind hybrid system and improving the overall econom-ic benefits of the hybrid power generation system.
hydro-wind-photovoltaic complementary power generation systemeconomic evaluationvibration avoidance strategynon-dominant genetic algorithm
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维普
