Adaptive model of frequency and power control in power systems with wind power plants
Journal Title: Проблеми загальної енергетики - Year 2018, Vol 0, Issue 4
Abstract
An adaptive model of frequency and power control in electrical supply systems with wind power plants was developed and comprehensively investigated. The regulating power of this model consists of two parts: the adaptive component and proportional-integral-differential (PID) law. The difference between setting specified by the dispatch service of electrical supply system and the power of wind power plant at each moment of time during the regulation period serves as the adaptive component. The second component of regulating power is the classical PID law, where frequency is used as an argument. Each of these individual components can provide a more or less acceptable frequency control, but their combination in a single law provides qualitatively much better results. We carried out a series of numerical experiments using the developed model. The purpose of these investigations was to study the possibilities of using the proposed structure of frequency control in the Integrated Power System (IPS) of Ukraine and ENTSO-E power system of the European Union. It was found that the best performance for frequency stabilization is provided by the full model, which uses both the adaptive component and PID law. This guarantees the European requirements to frequency stabilization (|Δf|max ≤ 0.02 Hz), and the values of PID-law coefficients are quite acceptable, based on the stability criterion of frequency control system. The use of only the adaptive component in the regulating power ensures the requirement to frequency stability (|Δf|max ≤ 0.2 Hz), which is valid in the IPS of Ukraine, but cannot meet the requirements of ENTSO-E power system. The use of only PID-law in regulating power can satisfy the requirements of ENTSO-E power system only in case of applying coefficients of this law that exceed by more than an order of magnitude their values appearing in the full regulation model. Such values of these coefficients may constitute a threat to the stability of entire system of frequency control.
Authors and Affiliations
Myhajlo Kulyk, Oleksandr Zgurovets
Keywords
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- EP ID EP499990
- DOI 10.15407/pge2018.04.005
- Views 44
- Downloads 0
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