Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System
In order to solve the problem of locomotive failure caused by the fault of grid-side grounding due to misinformation of grid-side current signal in the application of AC locomotive, a real-time diagnosis method for grid-side current signal anomalies based on multi-operating condition nonlinear model...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Control and Information Technology
2023-04-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2023.02.016 |
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| _version_ | 1849224949665890304 |
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| author | YUAN Jing LI Xueming |
| author_facet | YUAN Jing LI Xueming |
| author_sort | YUAN Jing |
| collection | DOAJ |
| description | In order to solve the problem of locomotive failure caused by the fault of grid-side grounding due to misinformation of grid-side current signal in the application of AC locomotive, a real-time diagnosis method for grid-side current signal anomalies based on multi-operating condition nonlinear model is proposed in this paper. Firstly, based on the system mechanism and engineering design experience, the variables strongly related to grid-side current are extracted, and a multi-operating condition nonlinear estimation model of grid-side current is established. Secondly, based on the two redundant grid-side current signals of the traction drive system and the estimated value of the grid-side current, residual and detection statistics were designed, and the effective fault detection and decision-making of the two grid-side current signal anomalies are achieved by combining the CUSUM algorithm. Finally, different fault-tolerant control strategies are adopted according to the fault decision-making results to ensure the normal control and protection functions of the system. Field data tests show that the proposed diagnostic method achieves timely detection and precise positioning of grid-side anomalies 0.3 s after the occurrence of anomalies, avoiding the impact of on-site faults caused by grid-side signal anomalies. |
| format | Article |
| id | doaj-art-586d81d3cf04416c90d1242069db2b13 |
| institution | Kabale University |
| issn | 2096-5427 |
| language | zho |
| publishDate | 2023-04-01 |
| publisher | Editorial Office of Control and Information Technology |
| record_format | Article |
| series | Kongzhi Yu Xinxi Jishu |
| spelling | doaj-art-586d81d3cf04416c90d1242069db2b132025-08-25T06:49:20ZzhoEditorial Office of Control and Information TechnologyKongzhi Yu Xinxi Jishu2096-54272023-04-019810436902063Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction SystemYUAN JingLI XuemingIn order to solve the problem of locomotive failure caused by the fault of grid-side grounding due to misinformation of grid-side current signal in the application of AC locomotive, a real-time diagnosis method for grid-side current signal anomalies based on multi-operating condition nonlinear model is proposed in this paper. Firstly, based on the system mechanism and engineering design experience, the variables strongly related to grid-side current are extracted, and a multi-operating condition nonlinear estimation model of grid-side current is established. Secondly, based on the two redundant grid-side current signals of the traction drive system and the estimated value of the grid-side current, residual and detection statistics were designed, and the effective fault detection and decision-making of the two grid-side current signal anomalies are achieved by combining the CUSUM algorithm. Finally, different fault-tolerant control strategies are adopted according to the fault decision-making results to ensure the normal control and protection functions of the system. Field data tests show that the proposed diagnostic method achieves timely detection and precise positioning of grid-side anomalies 0.3 s after the occurrence of anomalies, avoiding the impact of on-site faults caused by grid-side signal anomalies.http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2023.02.016grid-side currentabnormal signalmulti-operating condition nonlinear modelCUSUMfault-tolerant control |
| spellingShingle | YUAN Jing LI Xueming Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System Kongzhi Yu Xinxi Jishu grid-side current abnormal signal multi-operating condition nonlinear model CUSUM fault-tolerant control |
| title | Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System |
| title_full | Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System |
| title_fullStr | Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System |
| title_full_unstemmed | Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System |
| title_short | Real-time Diagnosis and Fault-tolerant Control of Grid-side Current Signal Anomaly in AC Traction System |
| title_sort | real time diagnosis and fault tolerant control of grid side current signal anomaly in ac traction system |
| topic | grid-side current abnormal signal multi-operating condition nonlinear model CUSUM fault-tolerant control |
| url | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2023.02.016 |
| work_keys_str_mv | AT yuanjing realtimediagnosisandfaulttolerantcontrolofgridsidecurrentsignalanomalyinactractionsystem AT lixueming realtimediagnosisandfaulttolerantcontrolofgridsidecurrentsignalanomalyinactractionsystem |