Automatic power generating control method for wind farm

Abstract

The invention discloses an automatic power generating control method for a wind farm. Firstly, the method considers active loss situations and corrects an active target value issued by a scheduler. Secondly, the method considers the practical power generating capability of each fan group and carries out active distribution calculation and instruction issuing, so that the practical power generating capability of each fan group is taken into consideration fully during distribution, and active instructions of each fan group are obtained and set to the fan group. Finally, a control instruction is dynamically adjusted according to execution situations, and the execution situation of each fan group is tracked. If fan group power adjustment is not enough, distribution calculation is conducted again according to the adjustment capability of each fan group. The active instructions of each fan group are dynamically adjusted, so that the fan groups capable of adjustment undertakes extra power adjustment tasks. The method effectively increases the power generating benefits of the wind farm, improves the regulating management level of the wind farm by a power grid scheduler, and improves the wind power generating utilization rate.

Description

technical field [0001] The invention relates to the field of automatic control of electric power systems, in particular to the automatic control technology of wind farms. Background technique [0002] At present, more and more wind farms are being built in China. Faced with the pressure of large-scale wind power access to the grid, automatic power generation control of wind farms is an effective measure to increase the rate of wind power grid integration. [0003] The current automatic power generation control scheme commonly used in wind farms is to allocate and calculate the active power target value issued by dispatching according to a fixed ratio (for example, according to the installed capacity ratio of each wind group), and obtain the active power command of each wind group and send it to each wind group. The monitoring system of each wind turbine group specifically regulates the power generation output of each wind turbine group. The active power command of each fan ...

AI Technical Summary

Problems solved by technology

[0006] Failure to consider the actual power generation capacity of wind turbines: the distribution is based on a fixed ratio, and the actual power generation capacity of each wind group cannot be taken into account. It is easy to cause a mismatch between the actual power generation capacity and the active power command, that is, the active power command allocated to the wind group that can generate more power is small and cannot The active power command distributed by the wind turbine group for power generation is large, which is easy to cause the loss of the overall power generation

[0007] Lack of dynamic adjustment: When there is a large deviation between the actual active power issued by the wind group and the distributed active power command, since the active power command distributed by each wind group remains unchanged, it is lost to compensate for the power generation deviation by adjusting other wind groups with adjustment capabilities In the end, the scheduling control requirements cannot be met, which reduces the control and management level of the wind farm by the grid dispatcher and the wind power utilization rate of the wind farm.

Images