Thyristor Valve of an HVDC Transmission System

摘要

A valve of a converter of a high-voltage direct current transmission system has a plurality of valve sections, each comprising a plurality of thyristors electrically connected in series, and a surge arrester, which is electrically connected in parallel to the valve. According to the invention, a surge arrester is connected electrically in parallel to each valve section. Thus a thyristor valve of a converter of a high-voltage direct current transmission system is obtained, which does not require control capacitors.