Research On Real-time Simulation Of Distributed Combined Cooling, Heating And Power Energy System

In recent years,distributed combined cooling heating and power system is a new energy supply system which is valued widely.It is able to provide power heating and cooling to users at the same time.This system is an integrated energy system,it comprises variety forms of energy and could achieve energy complementary and cascade utilization.It is clean and efficient as well.Modeling and simulation technology is the base of system quantification and in-depth research.So distributed combined cooling heating and power system has become an important study in integrated energy system area.In this paper,the main goal is to establish a real-time simulation platform which can be used for distributed combined cooling heating and power system.Real-time simulation is more convincing than offline simulation.It is more convenient and inexpensive compared with physical experiment.This paper discusses the modeling and simulation of the major equipments in integrated energy system.And achieves coupled modeling of variety kinds of energy systems and establishes the real-time simulation platform base on the Universal Real-time experimental platform(UREP).Firstly,this paper introduces the development of distributed combined cooling heating and power system at home and abroad,especially the modeling and simulation technology of integrated energy system.And give a brief introduction of real-time simulation.This paper divides the system into slow system and fast system according to the typical simulation step.The math model and simulation of microturbine,gas pipelines,interface valve,electric heaters,microturbine generation system,distributed photovoltaic generation system and distributed wind power system are studied.And the control strategies of the converters are discussed.Secondly,the real-time simulation platform is established with two UREP,a switch,a personal computer,etc.The slow system and fast system run in two UREP.And the personal computer is responsible for the human-computer interaction.Then two actual projects are conducted with the platform.The first one is a power gascoupled system.The second one is based on the project urban distribution network flexible interconnection which is conducted in Guizhou University.The results indicate that the platform built in this paper is capable of conducting real-time simulation of distributed combined cooling heating and power system.At last,the author summarizes the work done by this paper and look into the future of the real-time simulation technology of integrated energy system.