Problem-solving for Capacitor Banks Tripping in Nanning Substation
-
Abstract
During the start of Nanning substation, the capacitor banks at No.3 main transformer's low voltage side tripped for voltage off-normal , when putting into use manually.The paper analyzed the 500 kV voltage control curve, rated voltage of low voltage winding, voltage rise capacitance, capacitive rise effect, voltage setting value, etc, proved that only one capacitor bank at No.3 main transformer's low voltage side could be put into use in the normal conditions. With the demand of operation department, the paper analyzed the modification scheme to reduce one set of capacitor bank's capacitance and the condition of the modified capacitor banks putting into use, resonance and harmonic were also verified. Finally, the paper provided suggestions on technology and design management aim to above problems.
-
-
DownLoad: