Equivalent circuit for high voltage direct current transmission converter valve based on damping power extracting circuit

The invention relates to an equivalent circuit for a high voltage direct current transmission converter valve based on a damping power extracting circuit. The equivalent circuit is formed by converter valve towers, wherein each converter valve tower includes at least one valve layer; each valve layer includes valve modules and saturation resistors in series; each valve module includes thyristor grade TCAs in series; each thyristor grade TCA includes a damping power extracting circuit and a thyristor which are connected in series; and the damping power extracting circuit includes a damping loop and a direct current voltage sharing and voltage detection loop. For the equivalent circuit for a high voltage direct current transmission converter valve based on a damping power extracting circuit, a single capacitor double damping power extracting loop can be looped on the basis of acquiring a damping characteristic being similar to the double damping loop, and the power extracting characteristic of TTM is greatly im