Wind power plant synergy method with yawing and active power integrated cooperation among units

Abstract

The invention discloses a wind power plant synergy method with yawing and active power integrated cooperation among units, and the method comprises the steps: firstly dividing a wind power plant into a plurality of machine groups according to an averaged wind direction; secondly building a wake flow model and a machine group active power model; thirdly a former operation strategy of the machine groups under the same wind condition as a starting point of optimization at this time, simulating the active power of each machine group at different yawing angles and inducing factors, recording a parameter combination which enables the active power of the machine groups to be increased till the optimization is finished, and storing the wind speed, the wind direction, the latest recorded yawing angle and the inducing factor for the next optimization; finally setting the optimization result as the reference active powers and yawing angles of the machine groups, and transmitting the optimization result to each machine group. The method provided by the invention is smaller in calculation amount, can effectively inherit a historical optimization result, and can achieve the optimization control at lower cost. The yawing angle is dispatched for one time in one control period, and the method achieves the wind power plant active power optimization with the yawing and active power integrated cooperation at lower cost.

Description

technical field [0001] The invention relates to a method for optimizing the active power of a wind farm, in particular to a wind farm efficiency enhancement method for comprehensive coordination of yaw and active power among units. Background technique [0002] Improving the active power of wind farms and increasing power generation revenue has always been one of the core issues concerned by the wind power industry, and is of great value to the healthy development of the wind power industry. [0003] Traditionally, in order to increase the active power of wind farms, the maximum wind energy capture strategy for a single wind turbine is generally adopted, and the pitch angle and speed of the wind turbine are dynamically adjusted according to the wind conditions to track the best wind energy utilization coefficient to maximize the active power of a single wind turbine. However, due to the wake effect, the maximum wind energy capture of a single unit will cause the upwind unit ...

AI Technical Summary

Problems solved by technology

However, in existing studies, yaw coordination is generally considered as an independent scheme, and it is seldom used in coordination with unit pitch angle and unit speed, and the range of active power improvement for wind farms is limited. Even if there are individual studies that emphasize the comprehensive application of the above technologies, most of them The calculation cost is large, and it is difficult to be compatible with the existing active power control system hardware resources of the wind farm. Additional deployment of the system is required, and the engineering cost and engineering difficulty are relatively large. In addition, it will cause frequent actions of the yaw system, resulting in high power consumption of the yaw system , high wear and tear, which limits the scope of its engineering application

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