A method, device, equipment and medium for calibrating firing angle

Abstract

The invention discloses a trigger angle correction method, which can obtain the real trigger angles corresponding to a plurality of preset reference trigger angles, and then make a difference to obtain multiple deviation values ​​between the respective real trigger angles and the corresponding preset reference trigger angles , and then take the average value of multiple deviation values ​​as the average deviation between the real trigger angle and the preset reference trigger angle, that is, how much deviation is expected between the real trigger angle and the preset reference trigger angle, so that the Using the average deviation to guide the correction of the preset reference trigger angle in the future is conducive to the precise control of the real trigger angle, thereby improving the control accuracy and stability of the DC transmission system. The invention also discloses a trigger angle correction device, equipment and computer-readable storage medium, which have the same beneficial effects as the trigger angle correction method above.

Description

technical field [0001] The present invention relates to the field of direct current power transmission, in particular to a method for calibrating trigger angle, and also relates to a trigger angle calibrating device, equipment and computer-readable storage medium. Background technique [0002] There is a converter on the rectifier side and the inverter side of the DC transmission system. The thyristor in each converter needs to be controlled by triggering pulses. The trigger angle refers to the natural commutation point of the three-phase electricity to The electrical angle between the control pulses is applied to the gate of the thyristor. [0003] The trigger angle has a corresponding relationship with the DC voltage of the DC transmission system, and the precise control of the trigger angle can realize the control of the DC voltage, current and power of the DC transmission system, so as to make the DC transmission system operate stably. The preset reference trigger angle...

AI Technical Summary

Problems solved by technology

[0003] The firing angle has a corresponding relationship with the DC voltage of the DC transmission system. Precise control of the firing angle can realize the control of the DC voltage, current and power of the DC transmission system, so that the DC transmission system can run stably. In the prior art, it can only be based on The preset reference trigger angle and the three-phase bus voltage are used to generate trigger pulses to control the thyristor. It is expected that the real trigger angle is the same as the preset reference trigger angle, but the real trigger angle often has a certain deviation from the preset reference trigger angle. The real firing angle cannot be accurately controlled in the process, resulting in low control accuracy and stability of the DC transmission system

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