A Scheme to Mitigate Generation Trip Events by Ancillary Services Considering Minimal Actions of UFLS
Journal
IEEE Transactions on Power Systems
Journal Volume
35
Journal Issue
6
Pages
4815-4823
Date Issued
2020
Author(s)
Lai, C.-Y.
Abstract
The reliability of power systems with high penetration of renewables, a fast response mechanism, and precise decision-making scheme is more important than ever. This study presented a novel scheme that utilizes the predicted frequency nadir after a generation trip event to initiate necessary ancillary services such as fast spinning reserve units, energy storage units, and demand responses to restore the frequency back to the secure operating range. The proposed scheme coordinates Under-Frequency Load Shedding (UFLS) with ancillary services in the sense that the unnecessary load shedding can be avoided. By using the proposed scheme, the system becomes more resilient against disturbances, and the actions of load shedding are minimized. In this scheme, the frequency data is captured by phasor measurement units (PMUs), and a frequency nadir prediction algorithm is proposed. We demonstrate the effectiveness of the proposed scheme by using 1700-bus power system simulations and realistic frequency data from real generation trip events captured by a laboratory micro-phasor measurement unit (μPMU). © 1969-2012 IEEE.
Subjects
Ancillary services; battery energy storage system (BESS); demand response (DR); frequency nadir prediction; phasor measurement unit (PMU); under-Frequency Load Shedding (UFLS)
SDGs
Other Subjects
Decision making; Digital storage; Electric power plant loads; Energy storage; Phase measurement; Phasor measurement units; Storage as a service (STaaS); Ancillary service; Energy storage unit; Operating ranges; Phasor measurement unit (PMUs); Power system simulations; Prediction algorithms; Spinning reserves; Underfrequency load-shedding; Electric load shedding
Type
journal article