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Power system inertia estimation method based on maximum frequency deviation.

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Title: Power system inertia estimation method based on maximum frequency deviation.
Authors: Wang, Baocai1, Sun, Huadong1 sunhd@epri.sgcc.com.cn, Li, Wenfeng1, Yang, Chao1, Wei, Wei1, Zhao, Bing1, Xu, Shiyun1
Source: IET Renewable Power Generation (Wiley-Blackwell). Feb2022, Vol. 16 Issue 3, p622-633. 12p.
Subject Terms: Inertia (Mechanics), Electric generators, Accuracy, Cost effectiveness, Converters (Electronics)
Abstract: In order to solve the problem that the inertia estimation method based on the rate of change of frequency (RoCoF) is only applicable to the centre of inertia (COI) frequency, a novel inertia estimation method is proposed based on the maximum frequency deviation. This method utilizes the property that the maximum frequency deviation of each generator is basically consistent and easy to obtain. Firstly, the inertia support power of the system is quantified according to the disturbance power and frequency, and then the inertia support energy of the disturbance process is obtained. Finally, the system inertia is estimated by the ratio of the inertia support energy to the maximum frequency deviation. The proposed estimation method is suitable for non‐COI frequency, which makes it unnecessary to obtain the COI frequency and RoCoF. On this basis, a simplified estimation method is proposed based on the linearization of regulation power, which improves the estimation accuracy and simplifies the estimation process. According to the proposed method, the governor test data is used to estimate, which increases the estimation times and provides more information for system stable operation. The effectiveness and accuracy of the proposed method are validated by some cases. [ABSTRACT FROM AUTHOR]
Copyright of IET Renewable Power Generation (Wiley-Blackwell) is the property of Wiley-Blackwell 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.)
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DbLabel: GreenFILE
An: 155057070
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Power system inertia estimation method based on maximum frequency deviation.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Baocai%22">Wang, Baocai</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sun%2C+Huadong%22">Sun, Huadong</searchLink><relatesTo>1</relatesTo><i> sunhd@epri.sgcc.com.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Wenfeng%22">Li, Wenfeng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yang%2C+Chao%22">Yang, Chao</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wei%2C+Wei%22">Wei, Wei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Bing%22">Zhao, Bing</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xu%2C+Shiyun%22">Xu, Shiyun</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22IET+Renewable+Power+Generation+%28Wiley-Blackwell%29%22">IET Renewable Power Generation (Wiley-Blackwell)</searchLink>. Feb2022, Vol. 16 Issue 3, p622-633. 12p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Inertia+%28Mechanics%29%22">Inertia (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+generators%22">Electric generators</searchLink><br /><searchLink fieldCode="DE" term="%22Accuracy%22">Accuracy</searchLink><br /><searchLink fieldCode="DE" term="%22Cost+effectiveness%22">Cost effectiveness</searchLink><br /><searchLink fieldCode="DE" term="%22Converters+%28Electronics%29%22">Converters (Electronics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In order to solve the problem that the inertia estimation method based on the rate of change of frequency (RoCoF) is only applicable to the centre of inertia (COI) frequency, a novel inertia estimation method is proposed based on the maximum frequency deviation. This method utilizes the property that the maximum frequency deviation of each generator is basically consistent and easy to obtain. Firstly, the inertia support power of the system is quantified according to the disturbance power and frequency, and then the inertia support energy of the disturbance process is obtained. Finally, the system inertia is estimated by the ratio of the inertia support energy to the maximum frequency deviation. The proposed estimation method is suitable for non‐COI frequency, which makes it unnecessary to obtain the COI frequency and RoCoF. On this basis, a simplified estimation method is proposed based on the linearization of regulation power, which improves the estimation accuracy and simplifies the estimation process. According to the proposed method, the governor test data is used to estimate, which increases the estimation times and provides more information for system stable operation. The effectiveness and accuracy of the proposed method are validated by some cases. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IET Renewable Power Generation (Wiley-Blackwell) is the property of Wiley-Blackwell 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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RecordInfo BibRecord:
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        Value: 10.1049/rpg2.12367
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      – Code: eng
        Text: English
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        PageCount: 12
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    Subjects:
      – SubjectFull: Inertia (Mechanics)
        Type: general
      – SubjectFull: Electric generators
        Type: general
      – SubjectFull: Accuracy
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      – SubjectFull: Cost effectiveness
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      – SubjectFull: Converters (Electronics)
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      – TitleFull: Power system inertia estimation method based on maximum frequency deviation.
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            NameFull: Wang, Baocai
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            NameFull: Sun, Huadong
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            NameFull: Li, Wenfeng
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              M: 02
              Text: Feb2022
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              Y: 2022
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