Optimization And Control Of Large-scale Inverter Air Conditioning Cluster Considering The Uncertainty Of New Energy Generation

Under the guidance of Carbon Emission Peak and Carbon Neutrality,micro-grid technology has been developed rapidly,and now it has become an effective way to bring the efficiency of distributed power supply into full play.However,due to the environmental factors such as wind speed,light intensity and temperature are easily affected by weather changes,it is difficult to accurately predict the output of new energy,and has a strong uncertainty.Because of this characteristic,there is a risk of constraint overstepping in the actual operation of micro-grid,and the traditional deterministic dispatching method can’t satisfy the economy of the system.Therefore,under the uncertainty of new energy output,how to ensure the absorption of new energy,and to improve the economy of micro-grid system is the key to optimal dispatching of micro-grid.To this end,this paper introduces demand response in microgrids and investigates the use of the adjustable potential of load-side inverter air-conditioning load clusters to enhance the robustness and economy of microgrid systems.The main research contents are as follows.(1)Based on the inverter air-conditioning load model,a single-unit adjustable capacity evaluation method is proposed,which is suitable for cluster unified control.Then,according to the characteristics of air-conditioning load energy consumption,a inverter air-conditioning load cluster adjustable capacity evaluation model considering the diversity of distributed load parameters is designed and constructed.(2)To enhance the ability of micro-grid to cope with the uncertainty of new energy generation and to reduce the operating costs of mic-rogrid systems,this paper improves a twostage robust economic dispatch model that takes into account the adjustable capacity of inverter air-conditioning load clusters based on the above-mentioned inverter air-conditioning load cluster assessment model.The objective of this model is to obtain the lowest cost dispatch solution for microgrid system operation under the worst-case scenario,and to investigate the feasibility and effectiveness of using the adjustable capacity of inverter air-conditioning load clusters to cope with the uncertainty of new energy output.(3)In order to ensure the close combination of theory and practice,this paper built a multi-machine inverter air-conditioning demand response experimental platform based on distributed control architecture design,it is used to validate the calculation method of inverter air-conditioning load adjustable ability and the evaluation model of related demand response ability,and the technical rationality and engineering feasibility of the work are verified in an all-round way,and from the practice of feedback on the theoretical work of this paper to modify and improve,to achieve a rigorous closed-loop scientific research.