Abstract
Protection from grounding of the stator windings of generators that operate on collecting lines is now carried out by means of a line transformer of zero sequence current with magnetization (LTZC). Owing to the high imbalance current is is not possible to carry out sensitive protection that reacts to a current of industrial frequency. Solving this problem is possible by applying a control current with a frequency of 25 Hz to the generator voltage circuit, since in this case frequency detuning from the imbalance current is possible. This article describes development of a protection based on this principle.
Original language | English |
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Pages (from-to) | 1371-1376 |
Number of pages | 6 |
Journal | Soviet power engineering |
Volume | 10 |
Issue number | 10 |
Publication status | Published - Oct 1981 |
ASJC Scopus subject areas
- Engineering(all)