Method for preventing light and shadow of wind turbine generator from polluting resident houses

Abstract

The invention discloses a method for preventing light and shadow of a wind turbine generator from polluting resident houses. The method comprises the following steps that (1) a mathematical model forrepresenting the light and shadow of a wind wheel of the wind turbine generator is established in a rectangular plane coordinate system which takes the center of a tower of the wind turbine generatoras an original point, takes the longitude line of the original point as a Y axis and takes the latitude line as an X axis; (2) a coordinate value (x, y) of a resident house in the rectangular plane coordinate system is actually measured, the coordinate value (x, y) is plugged into the mathematical model for calculation, and when a calculated value T is less than or equal to 1, a current moment point A (x<0>, y<0>) is in an ellipse, and at the moment, the resident house is influenced by the light and shadow of a fan; and when the calculated value T is greater than 1, the current time point A (x<0>, y<0>) is outside the ellipse, and residents are not influenced by the light and shadow of the fan; and (3) when the resident house is influenced by the light and shadow of the fan, a fan controlsystem participates in fan yaw control in time, a light and shadow generation range is narrowed, the wind turbine generator completes control response on the basis of the obtained impeller yaw and rotating speed control instruction, light and shadow pollution is reduced as much as possible, and the downtime is shortened as much as possible to improve the power generation capacity.

Description

technical field [0001] The invention belongs to the technical field of wind power, and relates to a method for avoiding light and shadow pollution of a wind power unit to a resident's residence. Background technique [0002] The blades of wind turbines rotate continuously. Under the sunlight, when projected onto residential areas within a certain range, a flickering light and shadow can be produced, which is usually called the light and shadow effect. Light and shadow is a kind of light pollution. When residents are in the range of constantly flickering and changing light and shadow of wind turbines for a long time, it will have adverse effects on vision and nervous system. With the rapid development of distributed wind power, wind turbines are closer to the load center and closer to residential buildings. Therefore, how to accurately evaluate the light and shadow of wind turbines, effectively control them, and minimize light and shadow pollution has become particularly imp...

AI Technical Summary

Problems solved by technology

However, at present, adjusting the yaw angle and shutting down of wind turbines is entirely based on experience, and there is no standard, and it is impossible to accurately adjust the yaw angle and start and stop, and the effect of preventing light pollution is not good.

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