Our company `s system found the malfunction
Our product PDM-II on-line VHF partial discharge monitor system, installed and debugging completely in April, 2004. Looking from the practical application effect, the practical interface was convenient, the system was stable. In March,2006 Boyuan has made the hardware and software to update and accordingly made the system stably.
Data displayed that on April 6, 2006 generator’s maximum discharge capacity Qm increases suddenly, the nominal discharge capacity also sharp growth, this condition continues about 12 day. After the unit on April 18 the engine off minor repair discovered that, in unit stator trough A, between the B high pressure end has long approximately 1m diameter 20mm the metal flexible hose, therefore in unit normal work time, creates the metal flexible hose to the high-pressured end electric discharge, has created the certain damage to the unit insulation. After overhauls the personnel to repair, unit’s electric discharge situation tends to normally. The system monitor data the conclusion which obtains with afterwards the fault analysis may very good tallying, this event had proven once more the PDM-II water turbo generator shelf depreciation on-line monitor system may the very good reflection power set’s insulation condition, overhaul for the unit provides the reliable basis.
Sender: admin
2009/11/27 22:58:38