Protective equipment in a bipolar HVDC station

Details Protective equipment in a bipolar HVDC station Protective equipment in a bipolar HVDC station

1996-04-01

1998-04-07

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 62, 361115, H02H 300

Patent

active

057371660

ABSTRACT:
Protective equipment in a bipole converter station of an installation for power transmission by means of a high voltage direct current having main circuits on the dc side of the station. The main circuits have two separate pole parts, one part for each one of the two poles of the station, and a bipole part that is common to both poles. Measuring means in the station form measurement signals which correspond to operating quantities of the station. The measurement signals are supplied to the protective equipment. The protective equipment, dependent on the measurement signals and in their quarters with predetermined algorithm, takes measures to avoid permanent faults by influencing the operation of the station. The protective equipment has a pole protective means for each pole part and a bipole protective means for protection of the bipole part. The bipole protective means has two parts which are independent of each other, each of which is assigned to one of the two pole parts of the station, one to each pole part. The measuring means generates two redundant measuring signals, each of which is supplied to one of the independent parts of the bipole protective means. The bipole protective means that is assigned to a certain pole part only interrupts the operation of that pole part to which it is assigned and not the operation of the other pole part.

REFERENCES:
patent: 3952210 (1976-04-01), Kanngiesser

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