AVC controller performance detection method and apparatus

Abstract

The invention provides an AVC controller performance testing method and apparatus. The detection method comprises the steps of recording the general command receiving time t1 for an AVC to receive a general command from an upper host; acquiring a three-phase current value and a three-phase voltage value which are generated by a wind turbine generating set and a reactive power compensation device in response to a control command; calculating and recording response values Q3 and Q4 of the wind turbine generating set and the reactive power compensation device according to the three-phase voltage value and the three-phase current value, calculating a slider effective value by using a slider effective value algorithm, further determining whether reactive power outputs of the wind turbine generating set and the reactive power compensation device reach a steady state, and if so, recording the response time t2 and t3 at the steady state; calculating overall response time T1 and T2 of the AVC controller according to the response time t2 and t3 and the general command receiving time t1; calculating control accuracies CA1 and CA 2 of the AVC controller according to the response values Q3 and Q4 and the general command; and detecting whether the AVC controller satisfies the performance index requirement or not according to the overall response time T1 and T2 and the control accuracies CA1 and CA2.

Description

technical field [0001] The present invention relates to wind farm equipment detection technology, in particular to an AVC controller performance detection method and device. Background technique [0002] With the continuous acceleration of human pursuit of clean energy, wind power has been more extensively developed. Wind farms transmit power in the form of clustered wind turbines, and their proportion in the power structure of the power system has also increased significantly. The impact of the system is also becoming more and more obvious. In order to better improve the safe and stable operation of wind power, most wind farms have installed automatic voltage and reactive power control systems (AVC, Automatic Voltage Control) to achieve stable control of wind farm voltage. [0003] When using conventional means to test the control performance of the AVC controller in the wind farm, the control instructions of the AVC controller are changed manually, and then the AVC contro...

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Problems solved by technology

[0003] When using conventional means to test the control performance of the AVC controller of the wind farm, the control instructions of the AVC controller are changed manually, and then the AVC control instructions are issued manually. Calculate the response time of the AVC controller, so that the performance of the AVC controller cannot be accurately detected, and it is impossible to know whether AVC can play a good role in stabilizing the grid voltage when the grid voltage fluctuates

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