| In the energy Internet system,the energy hub combines different forms of energy together,forms a new energy utilization pattern,and realizes the necessary coordination center of energy production,transmission,storage,consumption and other aspects.Based on the renewable energy system and traditional energy system,this paper studies the coordination and optimization scheduling of energy Internet.The main research results of this paper are as follows:(1)According to the "source-grid-load-storage" system structure of the regional energy Internet,this paper establishes a model for the regional energy Internet combined cooling,heat and power supply system.Through the multi-energy coupling architecture of the regional energy Internet based on power-gas interconnection,the lowest operation cost is set as the operation optimization objective of the regional energy Internet,and the dynamic economic scheduling model of regional energy interconnection based on day-ahead is established.Finally,the results of an example show that the proposed framework is reasonable and effective.(2)In this paper,a multi-objective optimization scheduling model of "source-grid-load-storage" dynamic economic dispatching for regional energy Internet in power-gas interconnection is established with the system operation cost,environmental protection cost and the lowest primary energy utilization rate as objective functions.This paper analyzes the comprehensive operating benefits of the "source-grid-load-storage" system of the regional energy Internet with power-gas interconnection.The operation strategy of the "source-network-charge-storage" system equipment supporting the power-gas interconnection of the regional energy Internet has been formulated.Finally,through the simulation analysis of typical daily load in spring,summer,autumn and winter,the economy is proved.(3)The uncertainty of renewable energy is studied,the reliability model of wind energy is established to solve the uncertainty of wind energy,and Monte Carlo Simulation(MCS)is used to determine the day-ahead wind power output of wind farm.On the basis of reliability and efficiency of regional energy Internet,a multi-objective optimal scheduling model of "source-grid-load-storage" for regional energy Internet with power-gas interconnection is established,taking the system operating cost,environmental protection cost and the lowest primary energy utilization rate as objective functions.In this paper,Monte Carlo simulation is used to simulate the randomness and uncertainty of wind energy,and the day-ahead wind power output is obtained,which is brought into the research model and solved by the CPLex solver.Then,the simulated load data is brought into the CPLex solver to solve the power optimization optimization scheduling problem.In this paper,the regional energy Internet architecture was established,and the effectiveness of the proposed method was verified by comparing the typical daily operation results in traditional grid system. |
