UTILITIES AND PFC

摘要

According to Ken Lau, consulting engineer for PG&E (Pacific Gas and Electric), a California electric utility, the utilities perform PFC (power-factor correction) by switching in banks of capacitors at preset times. In a residential area, you can expect a surge in power use at about 7 a.m., so the substation automatically switches in a capacitor bank at that time, switching it out after 8 a.m. No communication or real-time adjustment is necessary for this type of correction.