Full
Outline
To deal with the over-voltage increase at the point of common coupling by the reactive power of a static synchronous compensator (STATCOM) due to its slow response speed when the grid voltage changes rapidly, a general criteria and technical indicators characterizing the over-voltage increase were proposed. Through a simplified analysis based on the magnitude of fundamental voltage, the severity of this over-voltage increase problem due to the slow response speed of STACOM was shown, and the quantitative requirement for calculating the AC voltage became clear. A fast voltage algorithm based on second-order generalized integrator and the corresponding coordination strategy were put forward. The main circuit topology of a STATCOM from a practical project and its control strategy were applied, and the digital simulation results from both a simplified Thevenin’s equivalent circuit and a complicated HVDC benchmark system showed that the proposed fast algorithm and coordination strategy can solve the over-voltage increase problem.
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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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