Model Predictive Control Method For Building Microgrid Considering Virtual Storage System

The system of the building microgrid represents a major potential contributor for energy-saving and emission-reduction.It is of great significance that there is a scheduling method for the collaborative optimization and management of various energy systems in building microgrid,which contributes to the aim of mutual advantages between various energy and reducing the operation cost.In this paper,it will to be considered that the collaborative optimization and the electricity trading strategy among the building microgrids with the uncertainties from the forecasting data being considered.The proposed MPC scheduling method can reduce the operating cost of the building microgrid by making full use of the thermal mass of the building.At the same time,it can effectively solve the errors between the schedules of the building microgrid at the day-ahead stage and the actual operation stage,and it has good performance for multiple scenarios.The main work is as follows:(1)Firstly,the virtual storage system of building,which lays a foundation for MPC,is developed by utilizing the heat storage characteristics of building.Then,the virtual storage model is integrated into the optimal scheduling model of the building microgrid as a flexible and controllable unit.The model can contribute to the operation cost reduction of the building microgrid,while guarantee the customer temperature comfort level at the same time.(2)An optimal scheduling method of a building microgrid with the virtual storage system is proposed based on the model predictive control approach.The method takes full advantage of the flexibility of the virtual storage model and use the MPC approach to optimally schedule the combined energy supply unit,the energy-consuming loads,and the virtual storage in the building microgrid.It has better control performance and stronger robustness with the uncertainties from the forecasting data being considered,which can effectively solve the problem that there exist big errors between the schedules of the building microgrid at the day-ahead stage and the actual operation stage.(3)Based the above-mentioned MPC approach,an optimal scheduling method for the multi-building microgrid system based non-cooperative-game is proposed.The method can reduce the trading electric quantity between the distribution network and the building microgrids,and raise the microgrids’ benefit from the electricity trading.Thereby,the economic efficiency of each building microgrid will be improved.