Rusko A., Thompson M. Power Quality in Electrical Systems
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Voltage compensators, dynamic
(see Dynamic voltage compensators)
Voltage dip (see Sags)
Voltage distortion, 25–42
flicker, 39–40
impulsive transients, 30–33
interruptions, 35
limits of, 16
notching, 35–38
oscillatory transients, 33–35
Voltage disturbances (see Disturbances)
Voltage fluctuations, 8–9, 37, 39–40
Voltage imbalance, 9, 40–42
Voltage regulators, 197
Voltage sags (see Sags)
Voltage support system (VSS), 136
Voltage swells (see Swells)
Voltage unbalance, 181–183
Voltage waveforms, ideal, 2–3
Voltage-doubler diode rectifiers, 148
VRLA (Valve-regulated lead-acid)
batteries, 139
VSS (Voltage support system), 136
Waveform(s):
DC, 50
ideal voltage, 2–3
periodic, 43–52
pulsating, 51–52
pulsating, with ripples, 52
pure sine wave, 45, 49
sine wave, 49
single-phase, 2, 3
square, 43, 45, 49, 50, 53
trapezoidal, 46
triangle, 44, 45, 52
Waveform distortion, 42
Wye-delta secondary windings, 121
Zener diodes, 7
Index 225