Adaptive Frequency-Regulation Demand Response Using Substation Solar Irradiance Measurement in High-PV Power Systems

TL;DR

This paper introduces an adaptive demand response method leveraging substation solar irradiance data to improve frequency regulation in high-PV power systems, accurately estimating system inertia and power imbalance.

Contribution

It presents a novel distributed approach that uses solar irradiance measurements for real-time system inertia estimation in high-PV environments.

Findings

Validated effectiveness using ERCOT high-PV models

Accurate real-time estimation of system inertia

Improved primary frequency regulation

Abstract

This letter proposes a distributed and adaptive demand response approach for primary frequency regulation in high-PV power systems. Using solar irradiance measurement at substations, the proposed approach allows accurate estimation of real-time system inertia of high-PV systems, thus facilitating the estimation of power imbalance after a contingency. The test results from the U.S. Electric Reliability Council of Texas (ERCOT) high-PV penetration models validated its effectiveness.