Full
Outline
Since the electrolytic hydrogen production (EHP) load has a large capacity, a fast response speed and flexible and adjustable power, it is a natural physical resource that can provide energy for frequency regulation. However, due to limitations on the existing two kinds of rectifiers used in EHP (i.e., thyristor and PWM rectifiers), it is difficult to realize the participation of EHP load in the system’s multi-scale frequency regulation. In this paper, a novel multi-scale frequency regulation control strategy for a hybrid rectifier used in EHP is proposed. A droop relationship between the firing angle of a thyristor rectifier in the hybrid rectifier and the system frequency is built, so as to realize the primary frequency regulation by regulating the hydrogen production power flowing through the thyristor rectifier according to changes in the system frequency. The auxiliary converter adopts virtual synchronous machine control to realize the inertia compensation, thereby smoothing the rate of change of frequency and gaining time for the primary frequency regulation performed by thethyristor rectifier. Through the coordination between the thyristor rectifier and the auxiliary converter in the hybrid rectifier, the multi-scale frequency regulation of EHP load is achieved. Finally, a low power experimental platform was established to verify the effectiveness of the proposed control method.
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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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