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In order to solve the frequency safety problem caused by the large-scale access of renewable energy, adjustable-speed pumped storage unit (ASPSU) was involved in frequency regulation of new power system. Firstly, the AGC frequency regulation stability of ASPSU was analyzed through the root locus method. Then, the evaluation scheme of unit power command response performance was designed to measure the rapidity and accuracy of output of ASPSU. And on this basis, the active power dynamic optimization allocation strategy based on the rate of change of frequency (ROCOF) was proposed. The new energy disturbance was simulated in the LFC model of a two-area interconnected power system to verify the effectiveness of proposed strategy. The results show that the proposed active power dynamic optimization allocation strategy can give full play to the frequency regulation advantage of ASPSU, effectively prevent frequency exceedance and maintain the frequency stability of power system.
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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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