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Aiming at the problem that the decisionmaking process in the existing power grid transmission line ice melting scheme arrangement takes a long time, and there is a risk of operation stability, which leads to the insufficient decisionmaking ability of the power grid to deal with severe ice disasters, a comprehensive energysupported transmission line ice melting optimization strategy under the dynamic constraints of stability risk is proposed. Firstly, an icing growth model is established based on meteorological data, the corresponding relationship between transmission line icing growth and line faults is analyzed, a line outage probability model is established, and the loss degree of line outage is quantified. Secondly, the mechanism of changing the line flow based on integrated energy to slow down the growth of line icing is analyzed, and the icemelting risk constraints of distribution lines based on integrated energy are considered to establish a line icemelting model based on integrated energy. On this basis, an icemelting optimization method for transmission lines with integrated energy support under the dynamic constraints of stability risk is proposed, which is iteratively solved based on the Lagrangian relaxation method. IEEE RTS79 is used to simulate the ice melting example. The results show that the method based on this paper can improve the efficiency of the transmission line ice melting scheme arrangement and ensure the safe and stable operation of the power grid.
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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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