Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies
For the problem of medium and high frequency oscillations in flexible HVDC projects, the existing solution is to add a filter in the voltage feedforward path to suppress high frequency oscillations, which, however, increases the risk of medium frequency oscillations. For this reason, a method is pro...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2022-07-01
|
| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202106054 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850053977881706496 |
|---|---|
| author | Qinan LI Yongjun XIA Xiaolin ZHANG Baokui SUN Huadong SUN Fan ZHANG Lanfang LI Yuefeng YANG Qingtao HAN |
| author_facet | Qinan LI Yongjun XIA Xiaolin ZHANG Baokui SUN Huadong SUN Fan ZHANG Lanfang LI Yuefeng YANG Qingtao HAN |
| author_sort | Qinan LI |
| collection | DOAJ |
| description | For the problem of medium and high frequency oscillations in flexible HVDC projects, the existing solution is to add a filter in the voltage feedforward path to suppress high frequency oscillations, which, however, increases the risk of medium frequency oscillations. For this reason, a method is proposed to avoid medium-high frequency oscillations by adjusting the control link delay based on the south channel of the Chongqing-Hubei flexible HVDC transmission project. Firstly, a impedance model of MMC converter station is established based on the principle of multi-harmonic linearization, and a comprehensive analysis is made on the influence of control link delay and grid voltage feedforward strategy on the impedance characteristics of MMC converter station and system stability. And then, the feasibility of adjusting the delay of the control link to avoid the medium-high frequency oscillation is discussed, and the method for selecting the time delay of the control link is given. Finally, based on PSCAD/EMTDC electromagnetic transient simulation, it is verified that the proposed method can achieve the suppression of the medium-high frequency oscillations in both the Hubei-side and Chongqing-side systems. Meanwhile, the proposed method has minor effect on the dynamic characteristics of the system. |
| format | Article |
| id | doaj-art-2061ce9d6ca84647987601bf559e712a |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2022-07-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-2061ce9d6ca84647987601bf559e712a2025-08-20T02:52:24ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492022-07-01557112110.11930/j.issn.1004-9649.202106054zgdl-55-02-liqinanKey Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression StrategiesQinan LI0Yongjun XIA1Xiaolin ZHANG2Baokui SUN3Huadong SUN4Fan ZHANG5Lanfang LI6Yuefeng YANG7Qingtao HAN8NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211006, ChinaElectric Power Research Institute of State Grid Hubei Electric Power Co., Ltd., Wuhan 430061, ChinaNARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211006, ChinaNARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211006, ChinaChina Electric Power Research Institute, Beijing 100192, ChinaNARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211006, ChinaNARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211006, ChinaNARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211006, ChinaState Grid Hubei DC Inspection Company, Yichang 443001, ChinaFor the problem of medium and high frequency oscillations in flexible HVDC projects, the existing solution is to add a filter in the voltage feedforward path to suppress high frequency oscillations, which, however, increases the risk of medium frequency oscillations. For this reason, a method is proposed to avoid medium-high frequency oscillations by adjusting the control link delay based on the south channel of the Chongqing-Hubei flexible HVDC transmission project. Firstly, a impedance model of MMC converter station is established based on the principle of multi-harmonic linearization, and a comprehensive analysis is made on the influence of control link delay and grid voltage feedforward strategy on the impedance characteristics of MMC converter station and system stability. And then, the feasibility of adjusting the delay of the control link to avoid the medium-high frequency oscillation is discussed, and the method for selecting the time delay of the control link is given. Finally, based on PSCAD/EMTDC electromagnetic transient simulation, it is verified that the proposed method can achieve the suppression of the medium-high frequency oscillations in both the Hubei-side and Chongqing-side systems. Meanwhile, the proposed method has minor effect on the dynamic characteristics of the system.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202106054modular multilevel converter (mmc)impedance characteristicmedium-high frequency oscillationtime delayflexible hvdc transmission |
| spellingShingle | Qinan LI Yongjun XIA Xiaolin ZHANG Baokui SUN Huadong SUN Fan ZHANG Lanfang LI Yuefeng YANG Qingtao HAN Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies Zhongguo dianli modular multilevel converter (mmc) impedance characteristic medium-high frequency oscillation time delay flexible hvdc transmission |
| title | Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies |
| title_full | Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies |
| title_fullStr | Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies |
| title_full_unstemmed | Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies |
| title_short | Key Factors of Medium-High Frequency Oscillation in Chongqing-Hubei HVDC System and Suppression Strategies |
| title_sort | key factors of medium high frequency oscillation in chongqing hubei hvdc system and suppression strategies |
| topic | modular multilevel converter (mmc) impedance characteristic medium-high frequency oscillation time delay flexible hvdc transmission |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202106054 |
| work_keys_str_mv | AT qinanli keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT yongjunxia keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT xiaolinzhang keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT baokuisun keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT huadongsun keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT fanzhang keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT lanfangli keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT yuefengyang keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies AT qingtaohan keyfactorsofmediumhighfrequencyoscillationinchongqinghubeihvdcsystemandsuppressionstrategies |