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At present, most variable-speed pumped-storage units use converters (AC excitation) to control power. There is a problem of reverse speed overshoot caused by rapid power changes, and the traditional governors are difficult to ensure good control effects, which affects the operating efficiency of variable-speed units. In order to study the control of the speed regulation system under the active power regulation of the variable speed unit, the speed regulation system of the variable speed pumped storage unit with adaptive backstepping sliding mode control (ABSMC) was proposed. Firstly, a mathematical model of the variable-speed pumped-storage unit speed control system including the optimal speed module was established. Secondly, taking the electromagnetic power as the system disturbance, an adaptive backstepping sliding mode controller for the variable-speed pumped-storage unit speed control system was designed and its stability was analyzed. Finally, a simulation test platform for the speed regulation system of the variable speed pumped storage unit was built, and the dynamic response simulation analysis of the speed of the variable speed pumped storage unit was carried out under the given power of the power generation condition. Compared with the sliding mode controller (SMC) and PID controller, the results show that the reverse overshoot of the controlled unit speed by the ABSMC is small, the adjustment time is short, and the effect of tracking the optimal speed is ideal. The effectiveness of the designed controller was 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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