Full
Outline
To solve the problems in a high-permeability regional power grid such as reduced moment of inertia, decreased system frequency regulation capability and lower frequency stability, the frequency regulation control of wind turbines is added on the basis of energy storage frequency regulation. Through the analysis of the influence of wind power permeability (δ) on the system, an adaptive wind-storage coordinated primary frequency regulation control (PFRC) strategy considering the influences of state-of-charge (SOC) and δ is proposed from the perspective of reducing the battery loss and prolonging the energy storage life. This control strategy is realized through the coordination of energy storage adaptive PFRC considering SOC and frequency regulation dead-zone and the wind power adaptive PFRC strategy considering δ, which can effectively improve the system stability and the frequency regulation effect of the power grid. Under the step disturbance, the lowest point of frequency drop changes from 0.33 to 0.07. Under the continuous load disturbance, compared with the single energy storage frequency regulation, the frequency quality under the proposed control strategy is changed from 3.966 to 1.676, and the SOC quality is changed from 0.064 07 to 0.016 48. The data is smaller, and the change in the SOC of energy storage is gentler, which can save the configuration of energy storage capacity and reduce the loss of the energy storage unit. Therefore, a better frequency regulation effect is achieved to maintain the stable operation of the system. Finally, the effecttiveness of the control strategy is verified by building a regional power grid model in MATLAB/Simulink.
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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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