Marius Constantin POPESCU


32-8 STUDII PRIVIND STABILITATEA STATORULUI HIDROGENERATOARELOR

HYDROGENERATOR STATOR STABILITY STUDY

 

The paper analyses the hydro generators stator stability, based on the problems that occurred during the operation of the Romanian power plants. In order to highlight the  stator components role in these problems, it is analysed the stability of the stator housing and hydro operation found in samples and tests hydro Power Plant No. 1 hydropower from Great River Retezat, where the curvature of the stator creates vibration and instability in operation. The stability of the stator in this case can be obtained by an adequate construction of the building system of the winding heads to prevent any movement of the coils during operation of the hydro. Hydro generator stator is conditional stability dynamic stability of the metal housing because the stator housing design and construction of a great height without adequate consolidation creates problems of vibration and dynamic stability housing.

 

Key words: hydro generator, vibrations, numerical tests

Cuvinte cheie: hidrogenerator, vibrații, teste numerice

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29-66 MODELAREA SISTEMULUI DE RĂCIRE A ETANŞĂRILOR POMPELOR PRINCIPALE DIN CIRCUITUL PRIMAR DE TRANSPORT AL CĂLDURII LA CNE CERNAVODĂ

CNE CERNAVODA NUCLEAR POWER PLANT PRIMARY
HEAT TRANSPORT PUMPS GLAND SEAL
COOLING SYSTEM MODEL
Primary Heat Transport Pumps Gland Seal Cooling System scope is to
provide a high pressure D2O cooling flow to the primary heat transport pumps
seals. The system safety function is to maintain Primary Heat Transport System
pressure boundary integrity and to prevent radioactivity releases. In order to
monitor the seal operation and to warn of a possible malfunction or failure, the
papers propose an operation model, based on an electric-hydraulics similarity.
Keywords: pumps, gland seal, mathematical model, electric-hydraulics
similarity
Cuvinte cheie: pompe, presgarnitură, model matematic, similitudine
electric hidraulică

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