A review of frequency stability services for grid balancing with wind generation

Research output: Contribution to conferencePaper

Abstract

Frequency stability in power systems is achieved by active power control, which aims to balance grid generation with load demand. Historically grid balancing services have been provided by synchronous thermal generating units. As wind penetration levels increase on the power system, it is essential that wind turbine generators (WTGs) provide robust, reliable frequency stability services to grid operators. Like other forms of renewable generation, such as solar photovoltaic generation, modern variable speed wind turbine generators (VSWTGs) are connected to the power system using power electronic convertors. This non-synchronous connection decouples the natural inertia of the WTG from the grid frequency. As system non-synchronous penetration (SNSP) levels increase, non-synchronous generation will be required to participate in frequency stability services, such as automatic generation control (AGC). This paper presents a review of WTG frequency response systems that allow WTGs to participate in frequency stability services by emulating the natural inertia and droop characteristics of conventional synchronous thermal generators. Power system simulations performed in MATLAB/Simulink show that the addition of emulated inertia and droop controllers into WTG’s power/speed control systems can reduce the rate of change of frequency (RoCoF) and increase frequency nadir when the power system is subject to a load/generation imbalance.
Original languageEnglish
Number of pages7
Publication statusAccepted - 11 Dec 2017
Event14th International Conference on Developments in Power System Protection: Conference on Developments in Power System Protection - Belfast, United Kingdom
Duration: 12 Mar 201815 Mar 2018
Conference number: 14th
https://events.theiet.org/dpsp/index.cfm?utm_source=redirect&utm_medium=any&utm_campaign=dpsp

Conference

Conference14th International Conference on Developments in Power System Protection
Abbreviated titleConference on Developments in Power System Protection
CountryUnited Kingdom
CityBelfast
Period12/03/201815/03/2018
Internet address

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  • Cite this

    Boyle, J., Littler, T., & Foley, A. (Accepted/In press). A review of frequency stability services for grid balancing with wind generation. Paper presented at 14th International Conference on Developments in Power System Protection, Belfast, United Kingdom.