Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power
Static security analysis (SSA) is a significant measure to verify the secure and stable operation of power grids. However, it is too time-consuming to perform SSA for interconnected networks due to the scale of network. Therefore, the equivalent-based method attracts attention due to simplifying the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722027354 |
| _version_ | 1797809828415930368 |
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| author | Jingwei Zhang Shuyong Li Wei Dai Haiqing Cai Yuanhong Lu Dongdong Zhang Xinzhang Wu |
| author_facet | Jingwei Zhang Shuyong Li Wei Dai Haiqing Cai Yuanhong Lu Dongdong Zhang Xinzhang Wu |
| author_sort | Jingwei Zhang |
| collection | DOAJ |
| description | Static security analysis (SSA) is a significant measure to verify the secure and stable operation of power grids. However, it is too time-consuming to perform SSA for interconnected networks due to the scale of network. Therefore, the equivalent-based method attracts attention due to simplifying the external networks (uninteresting networks). However, existing equivalent methods are not suitable for SSA, which are based on the assumption that the topology of internal networks is invariant. This paper proposes a novel static network equivalent method for SSA in interconnected networks. The proposed method can adaptively and precisely preserve the impact of external networks on topology changes of internal networks. Specifically, based on the sensitivity consistency of tie-line power, the equivalent nodal admittance matrix is derived for the external networks. The parameters for the obtained equivalent networks are obtained by least square model with Kirchhoff and necessary logistic constraints to achieve the optimal equivalence accuracy. The accuracy and practicability of proposed method are verified by using IEEE 39-bus system and IEEE 118-bus system. |
| first_indexed | 2024-03-13T06:58:40Z |
| format | Article |
| id | doaj.art-2050f827de22404fbca28b84167fc15c |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-03-13T06:58:40Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-2050f827de22404fbca28b84167fc15c2023-06-07T04:48:44ZengElsevierEnergy Reports2352-48472023-05-019328335Equivalent model for interconnected power systems based on sensitivity consistency of tie-line powerJingwei Zhang0Shuyong Li1Wei Dai2Haiqing Cai3Yuanhong Lu4Dongdong Zhang5Xinzhang Wu6College of Electrical Engineering, Guangxi University, Guangxi, 530004, ChinaState Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510663, China; National Energy Power Grid Technology R&D Centre, Guangzhou, 510663, China; Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System, Guangzhou, 510663, China; CSG Key Laboratory for Power System Simulation, Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510663, ChinaCollege of Electrical Engineering, Guangxi University, Guangxi, 530004, China; Corresponding authors.State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510663, China; National Energy Power Grid Technology R&D Centre, Guangzhou, 510663, China; Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System, Guangzhou, 510663, China; CSG Key Laboratory for Power System Simulation, Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510663, ChinaState Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510663, China; National Energy Power Grid Technology R&D Centre, Guangzhou, 510663, China; Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System, Guangzhou, 510663, China; CSG Key Laboratory for Power System Simulation, Electric Power Research Institute, China Southern Power Grid, Guangzhou, 510663, ChinaCollege of Electrical Engineering, Guangxi University, Guangxi, 530004, ChinaCollege of Electrical Engineering, Guangxi University, Guangxi, 530004, China; Corresponding authors.Static security analysis (SSA) is a significant measure to verify the secure and stable operation of power grids. However, it is too time-consuming to perform SSA for interconnected networks due to the scale of network. Therefore, the equivalent-based method attracts attention due to simplifying the external networks (uninteresting networks). However, existing equivalent methods are not suitable for SSA, which are based on the assumption that the topology of internal networks is invariant. This paper proposes a novel static network equivalent method for SSA in interconnected networks. The proposed method can adaptively and precisely preserve the impact of external networks on topology changes of internal networks. Specifically, based on the sensitivity consistency of tie-line power, the equivalent nodal admittance matrix is derived for the external networks. The parameters for the obtained equivalent networks are obtained by least square model with Kirchhoff and necessary logistic constraints to achieve the optimal equivalence accuracy. The accuracy and practicability of proposed method are verified by using IEEE 39-bus system and IEEE 118-bus system.http://www.sciencedirect.com/science/article/pii/S2352484722027354Static safety analysisSensitivity consistency of tie-line powerStatic network equivalent methodThe external networksAccuracy and practicability |
| spellingShingle | Jingwei Zhang Shuyong Li Wei Dai Haiqing Cai Yuanhong Lu Dongdong Zhang Xinzhang Wu Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power Energy Reports Static safety analysis Sensitivity consistency of tie-line power Static network equivalent method The external networks Accuracy and practicability |
| title | Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power |
| title_full | Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power |
| title_fullStr | Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power |
| title_full_unstemmed | Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power |
| title_short | Equivalent model for interconnected power systems based on sensitivity consistency of tie-line power |
| title_sort | equivalent model for interconnected power systems based on sensitivity consistency of tie line power |
| topic | Static safety analysis Sensitivity consistency of tie-line power Static network equivalent method The external networks Accuracy and practicability |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722027354 |
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