Faulty Synchronization of Salient Pole Synchronous Hydro Generator
This article presents the simulation results of hydro generator faulty synchronization during connection to the grid for various voltage phase shift changes in a full range (−180°; 180°). A field-circuit model of salient pole synchronous hydro generator was used to perform the calculation results. I...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/20/5491 |
| _version_ | 1797550417536614400 |
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| author | Adam Gozdowiak |
| author_facet | Adam Gozdowiak |
| author_sort | Adam Gozdowiak |
| collection | DOAJ |
| description | This article presents the simulation results of hydro generator faulty synchronization during connection to the grid for various voltage phase shift changes in a full range (−180°; 180°). A field-circuit model of salient pole synchronous hydro generator was used to perform the calculation results. It was verified using the measured no-load and three-phase short-circuit characteristics. This model allowed observing the physical phenomena existing in the investigated machine, especially in the rotor which was hardly accessible for measurement. The presented analysis shows the influence of faulty synchronization on the power system stability and the construction components which are the most vulnerable to damage. From a mechanical point of view, the most dangerous case was for the voltage phase shift equal to −120°, and this case was analyzed in detail. Great emphasis was placed on the following physical quantities: electromagnetic torque, stator current, stator voltage, rotor current, current in rotor bars, and active and reactive power. The physical quantities existing during faulty synchronization were compared with a three-phase sudden short-circuit state. From this comparison, we selected the values of physical quantities that should be taken into account during design of new hydro generators to withstand the greatest possible threats during long-term work. |
| first_indexed | 2024-03-10T15:28:59Z |
| format | Article |
| id | doaj.art-cc975e175a4c4012930eba1e91fe22ea |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T15:28:59Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-cc975e175a4c4012930eba1e91fe22ea2023-11-20T17:49:13ZengMDPI AGEnergies1996-10732020-10-011320549110.3390/en13205491Faulty Synchronization of Salient Pole Synchronous Hydro GeneratorAdam Gozdowiak0Faculty of Electrical Engineering, Wroclaw University of Science and Technology, 50-370 Wroclaw, PolandThis article presents the simulation results of hydro generator faulty synchronization during connection to the grid for various voltage phase shift changes in a full range (−180°; 180°). A field-circuit model of salient pole synchronous hydro generator was used to perform the calculation results. It was verified using the measured no-load and three-phase short-circuit characteristics. This model allowed observing the physical phenomena existing in the investigated machine, especially in the rotor which was hardly accessible for measurement. The presented analysis shows the influence of faulty synchronization on the power system stability and the construction components which are the most vulnerable to damage. From a mechanical point of view, the most dangerous case was for the voltage phase shift equal to −120°, and this case was analyzed in detail. Great emphasis was placed on the following physical quantities: electromagnetic torque, stator current, stator voltage, rotor current, current in rotor bars, and active and reactive power. The physical quantities existing during faulty synchronization were compared with a three-phase sudden short-circuit state. From this comparison, we selected the values of physical quantities that should be taken into account during design of new hydro generators to withstand the greatest possible threats during long-term work.https://www.mdpi.com/1996-1073/13/20/5491electrical machinehydro generatorfaulty synchronizationfinite element methodfield-circuit modeling |
| spellingShingle | Adam Gozdowiak Faulty Synchronization of Salient Pole Synchronous Hydro Generator Energies electrical machine hydro generator faulty synchronization finite element method field-circuit modeling |
| title | Faulty Synchronization of Salient Pole Synchronous Hydro Generator |
| title_full | Faulty Synchronization of Salient Pole Synchronous Hydro Generator |
| title_fullStr | Faulty Synchronization of Salient Pole Synchronous Hydro Generator |
| title_full_unstemmed | Faulty Synchronization of Salient Pole Synchronous Hydro Generator |
| title_short | Faulty Synchronization of Salient Pole Synchronous Hydro Generator |
| title_sort | faulty synchronization of salient pole synchronous hydro generator |
| topic | electrical machine hydro generator faulty synchronization finite element method field-circuit modeling |
| url | https://www.mdpi.com/1996-1073/13/20/5491 |
| work_keys_str_mv | AT adamgozdowiak faultysynchronizationofsalientpolesynchronoushydrogenerator |