| The power system is one of the most important infrastructures for the maintenance and development of modern society.Emergency power supply(EPS)can provide a short-term emergency power supply for critical loads when a fault occurs in power system.As an important part of EPS,emergency mobile power plant(EMPP),due to its unique mobility advantages,can rush to the scene to provide emergency power supply quickly,thereby reducing the power outage caused by the loss of life and property,thus improve power system resilience.As the fast start,high reliability of power supply advantages of the thermal power units,most of the EMPP generations are mainly based on the thermal power units.With the continuous development of a variety of new energy technologies and energy storage technologies,as well as many of the drawbacks of consumption of fossil fuels,hybrid energy system plant can achieve better performance than conventional thermal power units EMPP.In this paper,the optimal configuration model of hybrid energy mobile power generation system with wind,photovoltaic,diesel and gas is established.The details are as follows:First of all,the power output model of the hybrid power generation system is established in this paper.The system power supply mainly includes photovoltaic cells,wind turbines,diesel engines,micro gas turbines and energy storage devices.All kinds of the power output models of the power sources are established and the feasibilites as mobile power sources are analyzed.An evaluation index for evaluating the hybrid energy mobile power generation system is proposed,it mainly includes power density and energy density.The power density is divided into gravimetric power density and volumetric power density.The energy density is divided into gravimetric energy density and volumetric energy density.Then,a power supply capacity optimization model of a hybrid energy mobile power generation system that takes into account the cost of investment in power supply equipment,operation and maintenance costs,fuel costs and environmental cost conversion is established,which from the perspective of interval to consider the wind and photovoltaic output uncertainty specificly.According to the wind power generation and photovoltaic power generation interval,the reasonable storage capacity is determined.On the basis of the user power supply reliability requirements and mobility requirements,the optimal allocation scheme of the power supply capacity is obtained and the advantages and disadvantages of the solutions are analyzed according to the comparative analysis.Finally,the optimal configuration model of multi-objective hybrid power generation system for power system resilience is established.The objective functions are the total cost and the total mobility.The fuel tank fuel quantity is added as a variable into the system.The optimal solution of the model is obtained by using the MODE algorithm as the constraint of the system power supply reliability and the weight and output of each unit which used to get the optimal configuration result.On the one hand,the Pareto frontier of the proposed model is compared by a variety of intelligent algorithms to ensure the feasibility of the algorithm used;On the other hand,comparing with the conventional diesel engine power supply system and the diesel-gas-battery power supply system,the effectiveness of the optimal configuration results is ensured according to the indicators.In this paper,the optimal configuration model of hybrid energy mobile power generation system is proposed.The optimization result shows that the hybrid energy mobile power generation system can achieve better overall performance than the conventional thermal power unit emergency power supply. |
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