Electric Power Generation, Transmission, and Distribution

The larger the DC ripple in normal operation, the faster the drop in DC bus voltage during a sag. From Eq. (31.14) the maximum d ...

Figure 31.13 shows the equivalent results for a sag of type D, again withV¼0.5 andF¼1. As all three AC voltages show a drop in v ...

31.3.2 Reducing the Number of Faults Reducing the number of short-circuit faults in a system not only reduces the sag frequency, ...

31.3.5 Installing Mitigation Equipment The most commonly applied method of mitigation is the installation of additional equipmen ...

relays in underground or industrial distribution systems. The long sag duration also enables equip- ment to trip due to faults o ...

IEEE Recommended Practice for Powering and Grounding Sensitive Electronic Equipment, IEEE Std. 1100–1992. IEEE Recommended Pract ...

Rioual, P., Pouliquen, H., Louis, J.-P., Regulation of a PWM rectifier in the unbalanced network state using a generalized model ...

32 Voltage Fluctuations and Lamp Flicker in Power Systems S.M. Halpin Auburn University Voltage flicker is a problem that has ex ...

shown in Fig. 32.2 and is based on tests conducted by the General Electric Company. It is important to realize that these curves ...

frequency of voltage changes anywhere in the supplying transmission and distribution system. Voltage fluctuations associated wit ...

As examples, consider the rms voltage plots (on 120 V bases) shown in Figs. 32.4 and 32.5. Figure 32.4 shows an rms plot associa ...

sensation, Pinst, (2) short-term flicker severity, Pst, and (3) long-term flicker severity, Plt. A block diagram of an analog fl ...

time measurement system can easily predict possible irritation for arbitrarily complex modulation waveforms. As an example, Fig. ...

Shape factors are simple curves that can be used to predict, without simulation or measurement, the Pstthat would be measured if ...

IEC 1000-3-5,Electromagnetic Compatibility (EMC) Part 3: Limits — Part 5: Limitation of Voltage Fluctuations and Flicker in Low- ...

33 Power Quality Monitoring Patrick Coleman Alabama Power Company 33.1 Selecting a Monitoring Point ............................ ...

33.2 What to Monitor At minimum, the input voltage to the affected equipment should be monitored. If the equipment is single pha ...

events unless there is a corresponding voltage event. Most voltage and current recorders can easily capture the high steady stat ...

three numbers: the rms voltage of the highest 1 cycle, the lowest 1 cycle, and the average of every cycle during the interval. T ...

similar when captured by the Min=Max=Average recorder, while the cycle-by-cycle recorder reveals the difference in the voltage r ...