Wind turbine generator generating amount loss assessment method and device

Abstract

The invention discloses a wind turbine generator generating amount loss assessment method and device. The method comprises the steps that according to a wind frequency distribution and wind turbine generator theoretical power curve corresponding to the wind power plant marker post annual mean wind speed and marker post monthly average wind speed, an annual marker post generating amount Ek marker post and a monthly marker post equivalent generating power Pkm equivalent marker post of a wind turbine generator are calculated; substituted generating amount Ek substitution of the wind turbine generator in the output reducing running state, the standby application state and the down state; accumulated theoretical generating amount Ek theoretical normal running of the wind turbine generator in the normal running state is calculated; the actual and theoretical generating amount coefficient delta k is calculated; and the final lost generating amount delta Ek of the wind turbine generator is calculated. According to the disclosed wind turbine generator generating amount loss assessment method and device, interference from the non-wind resource influence state is eliminated in theoretical generating amount calculation, the error between the final lost generating amount and the actual lost generating amount is reduced, marker post generating amount changing is avoided, and absolute errors caused by the theoretical power curve are eliminated.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and device for evaluating the loss of power generation of a wind turbine. Background technique [0002] In 2016, the country's wind power maintained a healthy development momentum. The annual newly installed wind power capacity was 19.3 million kilowatts, and the cumulative grid-connected installed capacity reached 149 million kilowatts, accounting for 9% of the total power generation installed capacity. 4% of the amount. The distribution of wind resources in my country is obviously unbalanced in space. The areas with good wind resources and the areas that can be developed are becoming more and more limited, and the development space is increasingly shifting to areas with poor wind resources. At the same time, as the market competition intensifies, wind power owners and investors pay more and more attention to the efficiency of power plants. The benefits ...

AI Technical Summary

Problems solved by technology

The benchmark power generation is artificially set with reference to the wind resources of the wind farm, so this method indirectly considers the expected wind resources, but because other factors that affect power generation are not considered, the basis risk of this product is relatively high

Basis risk refers to the difference between the theoretical power generation and the actual power generation, and the difference caused by the benchmark power generation being disturbed and should be corrected but not corrected

Due to the existence of basis risk, this type of product is not very practical

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