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アイテム
分散型係数図形法に基づく電力系統のロバスト周波数制御系設計
https://doi.org/10.18997/00004217
https://doi.org/10.18997/00004217edd4bf80-7c1b-4a85-b05d-0daf7cb190e1
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kou_k_389.pdf (2.3 MB)
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| アイテムタイプ | 学位論文 = Thesis or Dissertation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-08-04 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Decentralized Coefficient Diagram Method Based Robust Frequency Control Design in Power System | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | 分散型係数図形法に基づく電力系統のロバスト周波数制御系設計 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Bernard, Michael Zontche
× Bernard, Michael Zontche
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | In an interconnected power system, area load change and abnormal conditions leads to mismatches within the system. Also, in recent years, renewable energy systems （RES） such as Wind Energy Systems （WES） has become the most popular renewable energy based generations. However, output fluctuations of WES can create imbalance between supply and demand. This imbalance can cause network frequency variations in power systems and thus reduce the power quality. To alleviate the mentioned problems, a control system is required to suppress the frequency fluctuations or oscillations caused by integrations of renewable energy sources and sudden load changes. Since, Proportional Integral （PI） controller cannot work under certain operating conditions, and due to problems of calculation burdens associated with the algorithms of other advance robust controllers such as Model Predictive Control （MPC）, it is necessary to implement a controller that is simple and reliable. The standard Coefficient Diagram Method （CDM） developed by Professor Shunji Manabe has an advantage because it is simple and robust, and solves the problem of calculation burden associated with MPC. But when the CDM is implemented for power system control, then problem of parameters’ tuning exist. One important aspect of the CDM is the stability indices. When using CDM for power system frequency control, the standard values for the stability indices cannot work. Therefore, they must be changed. However, changing the stability indices can be done based on experience or by trial and error; and this becomes a problem for new power system control designers. Hence, this work modifies the standard CDM by introducing feed forward and feedback compensators to compensate for deficient performances. The technique is proposed as a new frequency control scheme using the Coefficient Diagram Method as a decentralized robust controller, in various test scenarios; considering varieties of power system configurations. A three area interconnected power system is modelled, and this power system is assumed to be similar to the upcoming power system approved by the African development bank; which will interconnect Liberia, Guinea and Sierra Leone. These countries utilize hydro and steam turbines within their respective areas, but the problem of poor power quality which is highly related to frequency control requires attention. In this work, it is assumed that each country represents one area. Then, a three area power system assumed similar to their interconnection is modelled. With that, the proposed CDM is then implemented as control strategy to promote reliable electric power distributions. Digital simulations of various case studies are provided to validate the effectiveness of the proposed scheme. From the simulation results, it is shown that, considering the overall closed-loop system performance with the proposed CDM technique, robustness is demonstrated in the face of uncertainties due to governors and turbines parameters variation and loads disturbances. A performance comparison between the proposed controller, model predictive controllers （MPC）, and a classical proportional integral control （PI） scheme is carried out, confirming the superiority of the proposed CDM technique. | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | Chapter 1: Introduction||Chapter 2: Frequency Control in Power System||Chapter 3: Coefficient Diagram Method||Chapter 4: First Case Study: Application of CDM to Interconnected Power System for Decentralized Frequency Control||Chapter 5: Wind farm Integration to Power System||Chapter 6: Smoothing Output Fluctuations in Power Systems with Wind Farms By Using Coefficient Diagram Method||Chapter 7: Conclusion||Chapter 8: List of Papers||Chapter 9: Biography of the Author | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号:工博甲第389号 学位授与年月日:平成27年3月25日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Frequency Control | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Coefficient Diagram Method | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Wind Farms | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Model Predictive Control | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Proportional Integral Control | |||||||
| アドバイザー | ||||||||
| 三谷, 康範 | ||||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第389号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2015-03-25 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 平成26年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/00004217 | |||||||
| ID登録タイプ | JaLC | |||||||
