POWER QUALITY FOR COMBINED UTILITY & RENEWABLE POWER July 21, 2023 (4hr)

Power Quality for Combined Utility & Renewable Power Seminar (PQ-114)

DSPS # Course Outline – 4 hour seminar

Many buildings have a combination of power sources including utility, renewable energy inverters, standby generators and uninterruptible power supplies (UPS). This four (4) hour seminar compares these power sources from a power quality perspective and offers advice for the proper sizing of these power sources, based upon the intended loads. It demonstrates the various levels of power quality achievable for renewable energy inverters based on various filter schemes and provides instruction about the effect that specific loads can have on various power sources.

1. Introduction and Comparison of power sources [30 minutes]

a. Utility

b. Renewable energy (RE) inverters

c. Standby generators

d. Uninterruptible power supplies

2. Filter techniques for RE inverters [30 minutes]

a. PWM waveform

b. Supra-harmonics

c. Filter reactors

d. Various L-C filters

e. Multi-level inverters

3. Power source sizing requirements [45 minutes]

a. Inverter based sources

i. Renewable energy inverters

ii. Uninterruptible power supplies (UPS)

b. Inductance based sources

i. Utility service transformer

ii. Standby generator

4. PQ impact of loads on power sources [45 minutes]

a. LED lighting

b. Chillers & HVAC

c. Fan walls & ECMs

d. EV charging

5. Possible interactions between loads and power sources [60 minutes]

a. Harmonics

b. Supra-harmonics

c. EMI

6. Wrap-up (disturbances, waveform signatures, measurements) [30 minutes]

Upon completion of this course, participants should have a meaningful understanding of the power quality considerations for facilities that combine renewable power sources with traditional (utility) power. This seminar explains power quality issues for specific power sources as well as the impact of various loads on these sources.