When a large number of energy storage devices are integrated into the power grid through a virtual synchronous generator (VSG),improper selection of control parameters in traditional fixed inertia and damping control strategies can lead to long adjustment times or large overshoot,and fail to fully leverage the flexible advantages of VSG control. To address this issue,an adaptive control strategy for energy storage system based on the crisscross optimization (CSO) algorithm was proposed. Firstly,the VSG model of the energy storage system was established,and the minimum value of the sum of the frequency error of the VSG system and the total harmonic distortion of the voltage was taken as the objective function of CSO. The battery state of energy (SOE) constraint was introduced to solve the optimal inertia and damping. This algorithm has a faster convergence speed and effectively avoids parameter local solutions. On this basis,an improved inertia and damping adaptive control strategy was designed to effectively improve the dynamic performance of VSG. Finally,the effectiveness of the proposed strategy was verified by building a simulation model using Matlab/Simulink.
| 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 |