Control method of optimized running of combined cooling and power distributed energy supply system of micro gas turbine

Abstract

The invention belongs to the technical field of energy management of distributed generation energy supply systems of electric power systems. The control method comprises the following steps: before running a combined system on every workday, extracting history cooling load data and power load data of a terminal user from a historical data base and obtaining the delay variation curve of the coolingload and the power load of the terminal user during the whole workday by lone-term load predicting; according to load predicting results, working out the optimal generated output plan of the combinedsystem by adopting optimization control mathematical model; during the running of the combined system, carrying out optimization control calculation again by utilizing the terminal user real-time cooling and power load need obtained from the distributed control system, and modifying the generating capacity and the refrigerating capacity of the combined system. The invention utilizes a distributedmonitoring system to monitor the actual cooling and power load need of the terminal user and can modify the load forecasting result in real time and adjusting the respective controlled variable of the combined system.

Description

technical field [0001] The invention relates to an optimal operation control method of a distributed energy supply system for combined cooling and power supply of a micro gas turbine, and belongs to the technical field of energy management of a distributed power generation energy supply system of a power system. Background technique [0002] Micro gas turbine combined cooling and power distributed energy supply system refers to a comprehensive energy supply system with micro gas power generation device as the core equipment, which is suitable for direct construction in small and medium-sized end users, and provides power and cooling to users. The combined power generation system has the advantages of high energy cascade utilization efficiency, reliable power supply, good economic benefits, and environmental friendliness. The economic operation of the cogeneration system is not only related to the size of cooling load and electric load, but also related to factors such as whe...

AI Technical Summary

Problems solved by technology

[0006] 3) Micro gas turbines and supplementary combustion cooling and heating units form a joint supply system, which uses natural gas supplementary combustion to meet the cooling load demand of end users. Since cooling and heating are low-level energy products, the primary energy utilization efficiency of this system is relatively low. Low

[0008] 5) It does not take into account the impact of end-user cooling load and electricity load demand changes caused by seasonal changes on the optimal operation strategy of the combined cooling and power supply system

Images