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Microgrid has problems such as poor dynamic response performance and large overshoot when subjected to external disturbances under traditional droop control. In accordance with the above issues, this paper proposes a control strategy for photovoltaicenergy storage microgrid based on improved virtual oscillator and sliding mode control. The photovoltaic system adopts a twostage structure, and the front stage DCDC converter adopts sliding mode control to enhance the robustness of the microgrid against external interference; The back stage inverter uses a virtual oscillator control with MPPT algorithm to achieve maximum power point tracking control for photovoltaic cells, while improving the dynamic response speed of the microgrid. The energy storage system uses a battery model, and the inverter uses a virtual oscillator control that introduces virtual inertia. Inertia and damping characteristics are introduced into the virtual oscillator control to provide reliable power and frequency support for the microgrid. Finally, based on the Matlab/Simulink platform, a simulation model of the photovoltaicenergy storage microgrid is built. By comparing the simulation results with traditional droop control strategies, the feasibility and effectiveness of the control strategy proposed in this paper are verified.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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