Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity
The recording files of different devices in the substation are affected by the loss of synchronization signals and damage of communication channels, resulting in asynchronous recording files. However, various main protections such as longitudinal differential protection and distance protection in th...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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State Grid Energy Research Institute
2024-12-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202304074 |
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| _version_ | 1850249722723303424 |
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| author | Baojiang TIAN Yan LI Xiaoyu LIAO Xingwei DU Wenyan DUAN |
| author_facet | Baojiang TIAN Yan LI Xiaoyu LIAO Xingwei DU Wenyan DUAN |
| author_sort | Baojiang TIAN |
| collection | DOAJ |
| description | The recording files of different devices in the substation are affected by the loss of synchronization signals and damage of communication channels, resulting in asynchronous recording files. However, various main protections such as longitudinal differential protection and distance protection in the power system, as well as secondary equipment such as merging units, phasor measurement units, and recorders used for fault analysis, have strict requirements for information synchronization. To address this issue, this article proposes a self synchronization scheme for recording files of different devices in substations based on the sudden variable detection algorithm. Firstly, considering the problems of high-frequency signal loss and boundary effects in the traditional Mallat wavelet algorithm, which affect the accuracy of mutation point detection, a complementary adjacent window algorithm and an optimization strategy for data window selection are proposed, effectively solving the problems of traditional wavelet transform. On this basis, a substation information synchronization scheme based on the improved Mallat wavelet algorithm is proposed. Finally, the feasibility and advantages of the proposed improved algorithm and the information synchronization scheme were verified through on-site analysis of the actual recorded wave data. |
| format | Article |
| id | doaj-art-2df812da1fec44369d4645974cb386c2 |
| institution | OA Journals |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-2df812da1fec44369d4645974cb386c22025-08-20T01:58:27ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492024-12-01571218819710.11930/j.issn.1004-9649.202304074zgdl-57-03-tanbaojiangMulti-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal SingularityBaojiang TIAN0Yan LI1Xiaoyu LIAO2Xingwei DU3Wenyan DUAN4State Grid Henan Electric Power Company, Zhengzhou 450000, ChinaState Grid Henan Electric Power Company, Zhengzhou 450000, ChinaState Grid Henan Electric Power Company, Zhengzhou 450000, ChinaState Grid Henan Electric Power Company, Zhengzhou 450000, ChinaState Grid Henan Electric Power Company Electric Power Science Research Institute, Zhengzhou 450000, ChinaThe recording files of different devices in the substation are affected by the loss of synchronization signals and damage of communication channels, resulting in asynchronous recording files. However, various main protections such as longitudinal differential protection and distance protection in the power system, as well as secondary equipment such as merging units, phasor measurement units, and recorders used for fault analysis, have strict requirements for information synchronization. To address this issue, this article proposes a self synchronization scheme for recording files of different devices in substations based on the sudden variable detection algorithm. Firstly, considering the problems of high-frequency signal loss and boundary effects in the traditional Mallat wavelet algorithm, which affect the accuracy of mutation point detection, a complementary adjacent window algorithm and an optimization strategy for data window selection are proposed, effectively solving the problems of traditional wavelet transform. On this basis, a substation information synchronization scheme based on the improved Mallat wavelet algorithm is proposed. Finally, the feasibility and advantages of the proposed improved algorithm and the information synchronization scheme were verified through on-site analysis of the actual recorded wave data.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202304074information synchronizationsudden variable algorithmwavelet transformadjacent window complementary algorithmdata window selection optimization strategy |
| spellingShingle | Baojiang TIAN Yan LI Xiaoyu LIAO Xingwei DU Wenyan DUAN Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity Zhongguo dianli information synchronization sudden variable algorithm wavelet transform adjacent window complementary algorithm data window selection optimization strategy |
| title | Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity |
| title_full | Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity |
| title_fullStr | Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity |
| title_full_unstemmed | Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity |
| title_short | Multi-site Information Synchronization Scheme Based on Wavelet Transform to Detect Signal Singularity |
| title_sort | multi site information synchronization scheme based on wavelet transform to detect signal singularity |
| topic | information synchronization sudden variable algorithm wavelet transform adjacent window complementary algorithm data window selection optimization strategy |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202304074 |
| work_keys_str_mv | AT baojiangtian multisiteinformationsynchronizationschemebasedonwavelettransformtodetectsignalsingularity AT yanli multisiteinformationsynchronizationschemebasedonwavelettransformtodetectsignalsingularity AT xiaoyuliao multisiteinformationsynchronizationschemebasedonwavelettransformtodetectsignalsingularity AT xingweidu multisiteinformationsynchronizationschemebasedonwavelettransformtodetectsignalsingularity AT wenyanduan multisiteinformationsynchronizationschemebasedonwavelettransformtodetectsignalsingularity |