A new control method preventing transformer dc magnetization for voltage source self-commutated converters
- Tokyo Electric Power Co., Yokohama (Japan)
- Toshiba Corp., Fuchu, Tokyo (Japan)
A dc component contained in a output of a voltage source self-commutated converter makes a converter transformer to be dc-magnetized, in the worst case causing an overcurrent due to saturation. The authors experienced the dc-magnetization of the converter transformer of a 50 MVA self-commutated SVC installed in the Shinshinano Substation of Tokyo Electric Power Company when system disturbances occurred by energizing of an adjacent large capacity transformer. After analyzing the problem, a novel dc magnetization preventing control was developed that makes a fast flux correction according to the voltage dc component detected in the converter output. This method was applied to the 50 MVA self-commutated SVC and produced satisfactory operation results.
- OSTI ID:
- 372242
- Report Number(s):
- CONF-950727--
- Journal Information:
- IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 3 Vol. 11; ISSN 0885-8977; ISSN ITPDE5
- Country of Publication:
- United States
- Language:
- English
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