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Adaptive Under-Frequency Load Shedding Scheme in System Integrated with High Wind Power Penetration: Impacts and Improvements.

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Title: Adaptive Under-Frequency Load Shedding Scheme in System Integrated with High Wind Power Penetration: Impacts and Improvements.
Authors: Shun Li1 piaocool007@163.com, Fei Tang1 tangfei@whu.edu.cn, Youguo Shao1 ygshao@whu.edu.cn, Qingfen Liao1 qfliao@whu.edu.cn
Source: Energies (19961073). Sep2017, Vol. 10 Issue 9, p1331. 16p.
Subjects: Wind power, Computer buses, Inertia (Mechanics), Accuracy, Electric generators
Abstract: As the requirements of economical operation and reliability on power grid are enhanced gradually nowadays, the existing under frequency load shedding (UFLS) scheme is not quite fit for the modern power system that integrates high wind power. In this paper, the impacts of high wind power penetration on the UFLS are discussed thoroughly. A novel adaptive load shedding (LS) scheme is presented taking the high wind power penetration into account. In the proposed scheme, the equivalent inertia constant (EIC) is calculated accurately to improve the power deficit accuracy so as to reduce the error of LS. The dynamic correction of power deficit is able to solve the negative effects of the wind power output random reduction/the wind generator tripping. Besides, the locking criterion is capable of avoiding the influences of the wind power output random increase on the LS, thus cutting down the LS costs and even preventing the frequency overshoot. Moreover, in terms of the LS parameters setting, the coordination of the low frequency protection of the wind generator and the frequency threshold is addressed. The location and capacity model of LS, which is based on the load characteristics, can ameliorate the frequency recovery process. Finally, the validity and robustness of the proposed scheme are verified in the simulations on the IEEE-39 bus system with high wind power penetration. [ABSTRACT FROM AUTHOR]
Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Adaptive Under-Frequency Load Shedding Scheme in System Integrated with High Wind Power Penetration: Impacts and Improvements.
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  Data: <searchLink fieldCode="AR" term="%22Shun+Li%22">Shun Li</searchLink><relatesTo>1</relatesTo><i> piaocool007@163.com</i><br /><searchLink fieldCode="AR" term="%22Fei+Tang%22">Fei Tang</searchLink><relatesTo>1</relatesTo><i> tangfei@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Youguo+Shao%22">Youguo Shao</searchLink><relatesTo>1</relatesTo><i> ygshao@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Qingfen+Liao%22">Qingfen Liao</searchLink><relatesTo>1</relatesTo><i> qfliao@whu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Sep2017, Vol. 10 Issue 9, p1331. 16p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Wind+power%22">Wind power</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+buses%22">Computer buses</searchLink><br /><searchLink fieldCode="DE" term="%22Inertia+%28Mechanics%29%22">Inertia (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Accuracy%22">Accuracy</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+generators%22">Electric generators</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: As the requirements of economical operation and reliability on power grid are enhanced gradually nowadays, the existing under frequency load shedding (UFLS) scheme is not quite fit for the modern power system that integrates high wind power. In this paper, the impacts of high wind power penetration on the UFLS are discussed thoroughly. A novel adaptive load shedding (LS) scheme is presented taking the high wind power penetration into account. In the proposed scheme, the equivalent inertia constant (EIC) is calculated accurately to improve the power deficit accuracy so as to reduce the error of LS. The dynamic correction of power deficit is able to solve the negative effects of the wind power output random reduction/the wind generator tripping. Besides, the locking criterion is capable of avoiding the influences of the wind power output random increase on the LS, thus cutting down the LS costs and even preventing the frequency overshoot. Moreover, in terms of the LS parameters setting, the coordination of the low frequency protection of the wind generator and the frequency threshold is addressed. The location and capacity model of LS, which is based on the load characteristics, can ameliorate the frequency recovery process. Finally, the validity and robustness of the proposed scheme are verified in the simulations on the IEEE-39 bus system with high wind power penetration. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/en10091331
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 1331
    Subjects:
      – SubjectFull: Wind power
        Type: general
      – SubjectFull: Computer buses
        Type: general
      – SubjectFull: Inertia (Mechanics)
        Type: general
      – SubjectFull: Accuracy
        Type: general
      – SubjectFull: Electric generators
        Type: general
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      – TitleFull: Adaptive Under-Frequency Load Shedding Scheme in System Integrated with High Wind Power Penetration: Impacts and Improvements.
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            NameFull: Shun Li
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            NameFull: Fei Tang
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            NameFull: Youguo Shao
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            NameFull: Qingfen Liao
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            – D: 01
              M: 09
              Text: Sep2017
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              Y: 2017
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              Value: 10
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            – TitleFull: Energies (19961073)
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