Lub substation qauv yog lub hauv paus tseem ceeb ntawm lub zog hluav taws xob, lub luag haujlwm rau kev xa hluav taws xob, kev hloov pauv hluav taws xob (xws li, txo qis ntawm 110kV ntawm qhov siab -voltage sab mus rau 10kV ntawm qis-voltage sab), thiab kev faib tawm.
Nws ua tiav qib voltage hloov dua siab tshiab los ntawm lub ntsiab transformer, tswj lub on / off lub xeev ntawm switching khoom circuits, thiab siv cov kev tiv thaiv (xws li, overcurrent tiv thaiv nrog lub sij hawm teb tsawg tshaj li los yog sib npaug li 20ms) los saib xyuas tam sim no / voltage tsis nyob rau hauv lub sij hawm thiab txiav tawm faults. Cov cuab yeej ntsuas ntsuas (qhov tseeb ± 0.5%) sau cov ntaub ntawv fais fab kom ua kom zoo dua qhov kev ua haujlwm. Cov qauv no muaj feem cuam tshuam ncaj qha rau daim phiaj kev ruaj ntseg, txhim kho kev ntseeg tau ntawm cov khoom siv hluav taws xob (xws li, txo cov hluav taws xob hluav taws xob los ntawm 30%) thiab txhawb kev lag luam fais fab.
