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The development of modern power systems with wide span，low inertia，and complex structure makes the frequency stability problem increasingly prominent，and the spatial-temporal distribution characteristics of frequency are distinct. Taking the actual power grid as the object，the impacts of large-scale new energy access and DC power control on the grid frequency response under disturbances and the characteristics of frequency spatial-temporal distribution were analyzed. Firstly，based on the detailed time-domain simulation model，the causes of the spatial-temporal distribution of node frequency were discussed from the perspective of the distribution differences of disturbed power，inertia，and frequency regulation resources. The system-level and node-level frequency response indicators that reflect the overall trend and distribution differences of grid frequency response were proposed. Then，the impact mechanisms of factors such as the new energy power proportion，the distribution of synchronous，the primary frequency regulation of new energy，and DC frequency limit control on the grid frequency response under disturbances were analyzed. Finally，through simulation results of real power grid cases，the impact of various factors on the grid frequency response and its spatial-temporal distribution characteristics was quantitatively analyzed.
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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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