Modelling and Analysis of Load Frequency Control in Small Power Systems: a Case Study of New Zealand Network
- Resource Type
- Conference
- Authors
- Gutman, Pedro Ferreira; Makolo, Peter; Zamora, Ramon
- Source
- 2020 Australasian Universities Power Engineering Conference (AUPEC) Power Engineering Conference (AUPEC), 2020 Australasian Universities. :1-6 Nov, 2020
- Subject
- Power, Energy and Industry Applications
Renewable energy sources
Simulation
Power system stability
Stability analysis
Mathematical model
Frequency control
Load modeling
Virtual/Synthetic Inertia
multiple frequency keeping
frequency keeping control
frequency response
RoCoF
- Language
- ISSN
- 2474-1507
Some challenges experienced by small power systems are escalating as penetration of renewable energy sources (RESs) increases. To overcome the challenges related to frequency stability, this paper discusses about a load frequency control model that can respond to an emulation of a real operation. The inclusion of energy storage systems to the model to support frequency control in a low inertia condition is also addressed. The increase of RES penetration is simulated by a decrease in the system inertia constant. To compensate for the low inertia and to improve the frequency response of the system, a virtual inertia is installed. The proposed load frequency control model is implemented in Matlab/Simulink. The multiple frequency keeping (MFK) ancillary service and the frequency keeping control (FKC) are included in the proposed model. The proposed model is simulated in a New Zealand power system as a case study for small networks. The simulation results verified that the developed model works as expected.