Thyristor valve arrester and DC power transmission thyristor valve using the same

A thyristor valve arrester for connection to a multi-stage thyristor valve, comprising:

• a plurality of arrester sets, each including a plurality of arrester units arranged in parallel;
• and
• a plurality of inter-stage connecting conductors respectively arranged adjacent to one of the arrester sets through an insulator, a subset of the inter-stage connecting conductors being further respectively arranged between successive arrester sets;
• wherein the arrester sets and the inter-stage connecting conductors are stacked virtually vertically.

A thyristor valve assembly, comprising:

• an arrester set;
• a pair of inter-stage connecting conductors connected respectively to opposing sides of the arrester set;
• a thyristor valve connected to each inter-stage connecting conductor;
• and
• a leakage current ammeter connected between one end of the arrester set and one of the inter-stage connecting conductors.

A DC power transmission thyristor valve assembly, comprising:

• a plurality of thyristor valve stages;
• a plurality of arrester set stages;
• a plurality of thyristor valve connecting conductors for connecting the thyristor valve stages with corresponding arrester set stages;
• a plurality of inter-stage connecting conductors respectively arranged adjacent to one of the arrester set stages through an insulator, a subset of the plurality of inter-stage connecting conductors further being respectively arranged between successive arrester set stages, the arrester sets and the inter-stage connecting conductors being stacked virtually vertically, and the thyristor valve arrester stages being collectively arranged in parallel with the thyristor valve stages;
• and
• a leakage current ammeter and a surge counter electrically connected in parallel between one end of each of the arrester sets and an inter-stage connecting conductor adjacently arranged.

A DC power transmission thyristor valve assembly, comprising:

• a plurality of thyristor valve stages;
• a plurality of arrester set stages each of the arrester set stages having a plurality of arrester units arranged in parallel;
• a plurality of thyristor valve connecting conductors for connecting the thyristor valve stages with corresponding arrester set stages;
• and
• a plurality of inter-stage connecting conductors arranged adjacent to one of the arrester set stages through an insulator, a subset of said plurality of inter-stage connecting conductors further being respectively arranged between successive arrester set stages, and the arrester sets and the inter-stage connecting conductors being stacked virtually vertically and in parallel with the thyristor valve stages.

A DC power transmission thyristor valve, comprising:

• a plurality of thyristor valve stages;
• a plurality of arrester set stages each of the arrester set stages having a plurality of arrester units arranged in parallel;
• a plurality of thyristor valve connecting conductors for connecting the thyristor valve stages with corresponding arrester set stages;
• a plurality of inter-stage connecting conductors respectively arranged adjacent to one of the arrester set stages through an insulator, a subset of the plurality of inter-stage connecting conductors being further respectively arranged between successive arrester set stages, and the arrester sets and the inter-stage connecting conductors being stacked virtually vertically in parallel with the thyristor valve stages;
• and
• a plurality of leakage current ammeters and surge counters respectively electrically connected in parallel between one end each of the arrester units and one of the thyristor valve conductors;
• wherein each of the thyristor valve connecting conductors is made of a plurality of rigid matters.