Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators
Voltage sags often disrupt the normal functioning of sensitive equipment and distributed generators (DGs), making voltage sag mitigation based on corresponding assessments crucial. Voltage sag characteristics, including voltage magnitude and sag duration, are affected by the low-voltage ride-through...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | International Journal of Electrical Power & Energy Systems |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061525000377 |
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| author | Xian-yong Xiao Gui-shan Song Wen-Xi Hu Xin-yue Song |
| author_facet | Xian-yong Xiao Gui-shan Song Wen-Xi Hu Xin-yue Song |
| author_sort | Xian-yong Xiao |
| collection | DOAJ |
| description | Voltage sags often disrupt the normal functioning of sensitive equipment and distributed generators (DGs), making voltage sag mitigation based on corresponding assessments crucial. Voltage sag characteristics, including voltage magnitude and sag duration, are affected by the low-voltage ride-through (LVRT) requirement of inverter-interfaced distributed generators (IIDGs). Moreover, voltage sags inversely affect the tripping behavior of IIDGs. However, inadequate analysis of the mutual effect of IIDGs and voltage sags degrades the performance of voltage sag assessment. To address this issue, the current study proposes a voltage sag assessment method considering the LVRT of IIDGs, where voltage sag characteristics are calculated in two modules. In the first module, given the nonlinear relationship between the fault current and terminal voltage of an IIDG in LVRT, voltage magnitude calculation is performed iteratively, where the computational cost is reduced by an adaptive partitioned iterative model. In the second module, the tripping behavior of different IIDGs is analyzed according to the ride-through time estimation model. Finally, the voltage sag assessment result is obtained by modifying voltage magnitude under different estimated trip behaviors. The effectiveness and reliability of the proposed method are validated by considering various test systems and IIDG penetration extents. The results demonstrate the superiority of the proposed voltage sag assessment method over traditional methods in terms of accuracy and efficiency. |
| format | Article |
| id | doaj-art-04c409df331d4e69953e32f24e2cd186 |
| institution | DOAJ |
| issn | 0142-0615 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Electrical Power & Energy Systems |
| spelling | doaj-art-04c409df331d4e69953e32f24e2cd1862025-08-20T02:43:43ZengElsevierInternational Journal of Electrical Power & Energy Systems0142-06152025-04-0116511048610.1016/j.ijepes.2025.110486Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generatorsXian-yong Xiao0Gui-shan Song1Wen-Xi Hu2Xin-yue Song3College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCorresponding author.; College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaVoltage sags often disrupt the normal functioning of sensitive equipment and distributed generators (DGs), making voltage sag mitigation based on corresponding assessments crucial. Voltage sag characteristics, including voltage magnitude and sag duration, are affected by the low-voltage ride-through (LVRT) requirement of inverter-interfaced distributed generators (IIDGs). Moreover, voltage sags inversely affect the tripping behavior of IIDGs. However, inadequate analysis of the mutual effect of IIDGs and voltage sags degrades the performance of voltage sag assessment. To address this issue, the current study proposes a voltage sag assessment method considering the LVRT of IIDGs, where voltage sag characteristics are calculated in two modules. In the first module, given the nonlinear relationship between the fault current and terminal voltage of an IIDG in LVRT, voltage magnitude calculation is performed iteratively, where the computational cost is reduced by an adaptive partitioned iterative model. In the second module, the tripping behavior of different IIDGs is analyzed according to the ride-through time estimation model. Finally, the voltage sag assessment result is obtained by modifying voltage magnitude under different estimated trip behaviors. The effectiveness and reliability of the proposed method are validated by considering various test systems and IIDG penetration extents. The results demonstrate the superiority of the proposed voltage sag assessment method over traditional methods in terms of accuracy and efficiency.http://www.sciencedirect.com/science/article/pii/S0142061525000377Distribution networkDistributed generationNetwork partitionShort-circuit current calculationVoltage sag |
| spellingShingle | Xian-yong Xiao Gui-shan Song Wen-Xi Hu Xin-yue Song Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators International Journal of Electrical Power & Energy Systems Distribution network Distributed generation Network partition Short-circuit current calculation Voltage sag |
| title | Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators |
| title_full | Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators |
| title_fullStr | Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators |
| title_full_unstemmed | Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators |
| title_short | Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators |
| title_sort | voltage sag assessment method considering low voltage ride through of inverter interfaced distributed generators |
| topic | Distribution network Distributed generation Network partition Short-circuit current calculation Voltage sag |
| url | http://www.sciencedirect.com/science/article/pii/S0142061525000377 |
| work_keys_str_mv | AT xianyongxiao voltagesagassessmentmethodconsideringlowvoltageridethroughofinverterinterfaceddistributedgenerators AT guishansong voltagesagassessmentmethodconsideringlowvoltageridethroughofinverterinterfaceddistributedgenerators AT wenxihu voltagesagassessmentmethodconsideringlowvoltageridethroughofinverterinterfaceddistributedgenerators AT xinyuesong voltagesagassessmentmethodconsideringlowvoltageridethroughofinverterinterfaceddistributedgenerators |