Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation
When asynchronous motors, especially double-fed asynchronous motors in large capacity pump storage are the main loads in the high voltage direct current (HVDC) receiving end power grid, the increase of the equivalent slip of asynchronous motor load may cause transient voltage instability. In order t...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484723006844 |
| _version_ | 1797688383899697152 |
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| author | Qingyan Li Tao Lin Ziyu Guo Hui Du Xiyue Fu Xialing Xu |
| author_facet | Qingyan Li Tao Lin Ziyu Guo Hui Du Xiyue Fu Xialing Xu |
| author_sort | Qingyan Li |
| collection | DOAJ |
| description | When asynchronous motors, especially double-fed asynchronous motors in large capacity pump storage are the main loads in the high voltage direct current (HVDC) receiving end power grid, the increase of the equivalent slip of asynchronous motor load may cause transient voltage instability. In order to recover the voltage rapidly in the grid, the emergency reactive power support needs to be quick and accurate. A method for transient voltage stability emergency control by temporarily reducing DC current is proposed, the inverter station is used as emergency reactive power source for the HVDC receiving end power grid. In detail, firstly, aiming at the quantitative calculation of DC current, a nonlinear optimization model with the optimization variable of DC current and the objective of minimizing energy transmission reduction of HVDC is established. Further, in order to achieve fast solution and meet the accuracy requirements, global orthogonal collocation (GOC) is incorporated into the optimization model to transform the differential equations of both objective function and constraints into algebraic equations, thus the optimization is transformed into a nonlinear programming (NLP) problem, by which the emergency control strategy, in specific, the optimal DC current control scheme is obtained. Finally, the modified IEEE 14 benchmark is used to verify the effectiveness and superiority of the proposed strategy. |
| first_indexed | 2024-03-12T01:29:53Z |
| format | Article |
| id | doaj.art-045e7341706447f5988d57df4a3baf12 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-03-12T01:29:53Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-045e7341706447f5988d57df4a3baf122023-09-12T04:15:57ZengElsevierEnergy Reports2352-48472023-09-019353362Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocationQingyan Li0Tao Lin1Ziyu Guo2Hui Du3Xiyue Fu4Xialing Xu5Hubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network, School of Electrical Engineering and Automation, Wuhan University, Wuhan, 430072, ChinaHubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network, School of Electrical Engineering and Automation, Wuhan University, Wuhan, 430072, China; Corresponding author.State Grid Corporation of China, Beijing, 100031, ChinaHubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network, School of Electrical Engineering and Automation, Wuhan University, Wuhan, 430072, ChinaHubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network, School of Electrical Engineering and Automation, Wuhan University, Wuhan, 430072, ChinaCentral China Branch of State Grid Corporation of China, Wuhan, 430077, ChinaWhen asynchronous motors, especially double-fed asynchronous motors in large capacity pump storage are the main loads in the high voltage direct current (HVDC) receiving end power grid, the increase of the equivalent slip of asynchronous motor load may cause transient voltage instability. In order to recover the voltage rapidly in the grid, the emergency reactive power support needs to be quick and accurate. A method for transient voltage stability emergency control by temporarily reducing DC current is proposed, the inverter station is used as emergency reactive power source for the HVDC receiving end power grid. In detail, firstly, aiming at the quantitative calculation of DC current, a nonlinear optimization model with the optimization variable of DC current and the objective of minimizing energy transmission reduction of HVDC is established. Further, in order to achieve fast solution and meet the accuracy requirements, global orthogonal collocation (GOC) is incorporated into the optimization model to transform the differential equations of both objective function and constraints into algebraic equations, thus the optimization is transformed into a nonlinear programming (NLP) problem, by which the emergency control strategy, in specific, the optimal DC current control scheme is obtained. Finally, the modified IEEE 14 benchmark is used to verify the effectiveness and superiority of the proposed strategy.http://www.sciencedirect.com/science/article/pii/S2352484723006844High voltage direct current (HVDC)Transient voltage stabilityEmergency reactive power sourceEmergency control strategyGlobal orthogonal collocation (GOC)DC current control scheme |
| spellingShingle | Qingyan Li Tao Lin Ziyu Guo Hui Du Xiyue Fu Xialing Xu Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation Energy Reports High voltage direct current (HVDC) Transient voltage stability Emergency reactive power source Emergency control strategy Global orthogonal collocation (GOC) DC current control scheme |
| title | Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation |
| title_full | Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation |
| title_fullStr | Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation |
| title_full_unstemmed | Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation |
| title_short | Transient voltage stability emergency control strategy for HVDC receiving end power grid based on global orthogonal collocation |
| title_sort | transient voltage stability emergency control strategy for hvdc receiving end power grid based on global orthogonal collocation |
| topic | High voltage direct current (HVDC) Transient voltage stability Emergency reactive power source Emergency control strategy Global orthogonal collocation (GOC) DC current control scheme |
| url | http://www.sciencedirect.com/science/article/pii/S2352484723006844 |
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