A Small-AC-Signal Injection-Based Decentralized Secondary Frequency Control for Droop-Controlled Islanded Microgrids Article Swipe
Baojin Liu
,
Teng Wu
,
Zeng Liu
,
Jinjun Liu
·
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1109/tpel.2020.2983878
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1109/tpel.2020.2983878
In an islanded microgrid composed of droop-controlled parallel inverters, the system frequency endures deviations as the load changes. To compensate for frequency deviation without involving communication infrastructures among distributed generators (DGs), the proportional-integral regulator based secondary frequency control (PI-SFC) method has been proposed in the literature. However, PI-SFC may incur real power-sharing errors because the integrator accumulates disturbances and noise in each DG, leading to different compensation values of nominal real power. To achieve frequency restoration while maintaining equal real power sharing among DGs, this article proposes a small-ac-signal injection-based secondary frequency control (SACS-SFC) method, which is implemented by injecting an additional ac signal into the output voltage of each DG. Furthermore, a droop relation between the frequency of the injected SACS and the compensation value of nominal real power is innovatively established to trim the output real power of each DG to be equal. Frequency deviations caused by primary droop control are thus eliminated, and even real power sharing can be maintained among DGs. Moreover, the control parameters of the proposed SACS-SFC are comprehensively designed via steady state and dynamic model of the system. Simulation and experimental results demonstrate the effectiveness of the proposed method.
Related Topics
Concepts
Voltage droop
Control theory (sociology)
Microgrid
Frequency deviation
Integrator
Automatic frequency control
AC power
Compensation (psychology)
Noise (video)
Frequency compensation
Power (physics)
Voltage regulator
SIGNAL (programming language)
Electric power system
Engineering
Voltage
Computer science
Capacitor
Control (management)
Physics
Telecommunications
Electrical engineering
Quantum mechanics
Programming language
Artificial intelligence
Psychology
Psychoanalysis
Image (mathematics)
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1109/tpel.2020.2983878
- OA Status
- hybrid
- Cited By
- 98
- References
- 45
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3015181051
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3015181051Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1109/tpel.2020.2983878Digital Object Identifier
- Title
-
A Small-AC-Signal Injection-Based Decentralized Secondary Frequency Control for Droop-Controlled Islanded MicrogridsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2020Year of publication
- Publication date
-
2020-03-30Full publication date if available
- Authors
-
Baojin Liu, Teng Wu, Zeng Liu, Jinjun LiuList of authors in order
- Landing page
-
https://doi.org/10.1109/tpel.2020.2983878Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
hybridOpen access status per OpenAlex
- OA URL
-
https://doi.org/10.1109/tpel.2020.2983878Direct OA link when available
- Concepts
-
Voltage droop, Control theory (sociology), Microgrid, Frequency deviation, Integrator, Automatic frequency control, AC power, Compensation (psychology), Noise (video), Frequency compensation, Power (physics), Voltage regulator, SIGNAL (programming language), Electric power system, Engineering, Voltage, Computer science, Capacitor, Control (management), Physics, Telecommunications, Electrical engineering, Quantum mechanics, Programming language, Artificial intelligence, Psychology, Psychoanalysis, Image (mathematics)Top concepts (fields/topics) attached by OpenAlex
- Cited by
-
98Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 9, 2024: 21, 2023: 26, 2022: 28, 2021: 13Per-year citation counts (last 5 years)
- References (count)
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45Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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