The transformation ratio of a transformators attiecas uz the spriegums ratio starp the high voltage side tining and the low voltage side tining of the transformer. Specific, it represents the ratio of the rated voltage on the primary side to the rated voltage on the secondary side.
Matemātiski, the transformators ratio (K) can be expressed as: K=rated voltage on high voltage side/rated voltage on low voltage side.
How to calculate transformator transformation ratio? There are vairāki methods:
1. ratio=skaits of pagriezieni in the primārais tinumi / skaits of pagriezieni in the sekundārais tinumi;
2. attiecība=ieeja spriegums / izeja spriegums
3. ratio=√(rated capacity of the transformer × input voltage) /output voltage
And zem is the influence of transformators transformācija ratio on power system:
1. Spriegums stabilitāte Maiņa transformators transformācija koeficients būs tieši ietekmē spriegums stabilitāte of jauda sistēma. Konkrēti, an palielinājums in attiecība noved uz an palielinās in spriegums, kamēr a samazinājums in attiecība noved to a samazinās in spriegums. In practice, the variācija of the ratio must be uzmanīgi kontrolēts to nodrošina ka the voltage stability of the system is in in acceptable range.
2. T izmaiņas of transformators attiecība būs arī ietekmē transmisija spēja of the system. Kad the transformation ratio is reduced, the rated current of the converter is also reduced, kas var lead to a samazināt in load capacity. At the same time, the reactive power of the system will also affected by the change of transformation ratio. Tāpēc, kad pielāgošana transformācija attiecība, the influence on transmission capacity must būt pilnīgi ņemts vērā.
3. Transformatori ir parasti brūce lietošana dzelzs serdeņi in power sistēmas. Maiņa the transformators attiecība prasa pārregulēšana the total flux of the core. If the technology is not pareizi apgūts, it var cēlonis dzelzs kodols to būt magnetizēts, tādējādi cēlonis drošība apdraudējumi. 4. In some special situations, such as inspection and maintenance of power systems during construction, it may be need to change the transformator/ratio to ensure better darbība of the system. Tomēr, šis arī prasa uzmanīgi apsvērumi of the impact of ratio changes on the overall stability and safety of the power system.
