Emergency Frequency Control in Future Networks

Abstract

The nature of power systems is rapidly changing with the emerging penetration of renewables and other sources of the energy. These changes may lead to the insecurity of power supply if operators continue to depend primarily on offline security assessment and planning. Therefore, there is a need for the new adaptive solutions to ensure adequate system security and introduction to the measurement technologies to overcome increased uncertainty of the systems. The objective of the research presented in this dissertation is to understand under frequency load shedding scheme mechanisms and to propose a new "adaptive under frequency load shedding scheme" that is based on practical evaluations of benefits against weaknesses of implemented schemes found in the literature. The new scheme proposed changes in time delays on the basis of the initial Rate Of Change Of Frequency and adapts the load shedding amounts according to it. The research presented in this dissertation includes design and implementation of different under frequency load shedding schemes found in the literature, creation of the new adaptive under frequency load shedding scheme and comparison with the existing schemes. Furthermore, schemes from the literature and the new proposed scheme have been tested by using data measured by synchronized measurement units installed in the laboratory.

Date of Award	31 Dec 2016
Original language	English
Awarding Institution	The University of Manchester
Supervisor	Vladimir Terzija (Supervisor) & Haiyu Li (Supervisor)