Time-Varying Voltage Sensitivity of Residential Loads for Voltage-Led Power Control Applications

To enable higher penetration of renewable energy resources and to deal with the power supply of new types of electrical loads, such as electric vehicles, a larger energy reserve and power flexibility are needed for the modern power system. The voltage-led power control unlocks power flexibility from loads by turning passive loads into active resources. The voltage-led power control shapes the power consumption of loads by controlling the voltage, utilizing the correlation between power and voltage magnitude, known as voltage sensitivity. Current data on voltage sensitivity is out-of-date, mostly based on studies in the 1970s. The time-varying nature of the voltage sensitivity is also usually ignored. This poster considers the time-varying characteristics and provides the voltage sensitivity profiles of common residential loads with a sub-minute time resolution. To obtain realistic results, the voltage sensitivity is determined experimentally from actual loads during realistic operations.