Research On Numerical Simulation Of Combined Heat And Power System To Accommodating Curtailed Wind Power

In the "Three Norths" wind power has a larger installed capacity.However,due to the outward transport capability in the region and the limitation of its capability of absorbing wind power,a large amount of abandonment phenomenon has been caused.In this paper,the model of thermal network is established by the method of MATLAB/SIMULINK simulation and the effect of thermal network on the dissipation of wind power is analyzed.Secondly,a model of optimal co-generation scheduling for wind power generation is established.The heat transfer delay characteristics of heat network,the thermoelectric coupling characteristics and the uncertainty of wind power are considered.Finally,it is proved that the optimal scheduling of combined heat and power generation can promote the dissipation of wind power more than the separate scheduling of traditional heat network and power grid.The specific steps of this article are as follows.First of all,this paper introduces the various parts that make up the thermoelectric combined system,and analyzes the characteristics of each part.Secondly,using MATLAB/SIMULINK to build a simple heat network system with a heat source and a heat load,the preliminary study shows the effect of heat transfer delay and heat storage on wind power consumption.Thirdly,using MATLAB to write a program to establish a thermoelectric combined scheduling model.The model includes the constraints of heat network system,power grid system and cogeneration unit.In the heat network model,the characteristics of heat transfer delay and heat storage in buildings are taken into account.The objective function is to add the total operating costs of the combined system The sum of wind power penalty functions.Then,in order to verify the effect of the combined thermoelectric model on wind power consumption,a model of wind power is established.In order to describe the uncertainty of wind power,this paper uses the scenario method to establish the wind power model.Finally,the analysis of the example is carried out,and the results are compared with the results of the optimal scheduling of combined heat and power and the promotion of wind power dissipation without considering the thermoelectric joint scheduling.The research shows that the combined heat and power optimal scheduling of transmission delay of heat network and heat storage of buildings have a positive effect on wind power consumption.