WANG ZHENG-FENG, CHEN XIAO-FENG, LUO YA-QIAO, et al. Measures on Suppressing 3rd Harmonic Enlargement of High Voltage Shunt Capacitor at 220 kV Banqiao Substation. [J]. Power capacitor & reactive power compensation, 2013, 34(5): 34-39.
WANG ZHENG-FENG, CHEN XIAO-FENG, LUO YA-QIAO, et al. Measures on Suppressing 3rd Harmonic Enlargement of High Voltage Shunt Capacitor at 220 kV Banqiao Substation. [J]. Power capacitor & reactive power compensation, 2013, 34(5): 34-39. DOI: 10.14044/j.1674-1757.pcrpc.2013.05.007.
Measures on Suppressing 3rd Harmonic Enlargement of High Voltage Shunt Capacitor at 220 kV Banqiao Substation
the phase and the waveform distortion of three-phase current at both high voltage and low voltage side of main transformer in case of switching on 3 sets of capacitors at low voltage side of 220 kV Banqiao substation are analyzed.By harmonic detection at site
system simulation and equivalent calculation
it is found that the existence of 3rd harmonic source at 220 kV system and the unreasonable layout of parameters for capacitors at low voltage side of Banqiao substation lead to series resonance of 3rd harmonics and enlargement of 3rd harmonic current and
consequently current phase and waveform distortion at high voltage side and low voltage side of Banqiao substation.5% series reactor is adjusted into 12% series reactor in one set of capacitor at Banqiao substation in order to suppress enlargement of 3rd harmonics and assure normal operation of Banqiao substation.