Calculation method of time series output power of wind farm considering icing loss

Abstract

The invention discloses a wind power plant time sequence output power calculation method in mountainous complex terrains under a condition that icing loss is considered. Influence on output power by an internal cable and / or overhead line of a wind turbine generator and a window power plant is considered while calculation is carried out; an obtained result is used for evaluating the reliability of an electric system power generation system accessed into the wind power plant; time sequence output power is subjected to clustering analysis to establish a multimode probability model of the wind power plant; and the multimode probability model of the wind power plant can be further used for evaluating the reliability of a power generation and transmission system. An influence factor, especially the influence on the wind power plant output power by the icing congelation loss of the wind power plant, of the wind power plant output power is perfected, an icing congelation loss simulation result is consistent with the reality, and the evaluation precision of the reliability of the wind power plant can be improved.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a method for calculating the time-series output power of a wind farm in consideration of icing loss. Background technique [0002] With the large-scale clustering of wind power, it also has a certain impact on the power system. Therefore, it is necessary to conduct reliability assessment for power systems with large-scale wind farms. With the actual grid-connected operation of wind power, many problems have begun to emerge. From February to April 2011, due to cable accidents, three consecutive large-scale wind turbine off-grids occurred in Jiuquan, Gansu, Guazhou, and Zhangjiakou, Hebei. The severe weather will also have a great impact on the output power of wind farms, such as in the southwestern part of my country. From December to March of the next year in the region, under the action of external natural environments such as temperature and humidity, the line...

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Problems solved by technology

From February to April 2011, due to cable accidents, three consecutive large-scale wind turbine off-grids occurred in Jiuquan, Gansu, Guazhou, and Zhangjiakou, Hebei. The severe weather will also have a great impact on the output power of wind farms, such as in the southwestern part of my country. From December to March of the next year in the region, under the action of external natural environment such as temperature and humidity, the lines and wind turbines in the wind farm will be covered with ice, resulting in high failure rate of wind turbines and weakened output power

[0005] For the use of the theoretical icing model, the main problem is the input. Due to the influence of icing, the measured wind speed data may not be accurate

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