On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data
The operation and planning of distribution grids require the joint processing of measurements from different grid locations. Since measurement devices in low- and medium-voltage grids lack precise clock synchronization, it is important for data management platforms of distribution system operators t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/20/6903 |
| _version_ | 1797513124007378944 |
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| author | Hans-Peter Schwefel Imad Antonios Lester Lipsky |
| author_facet | Hans-Peter Schwefel Imad Antonios Lester Lipsky |
| author_sort | Hans-Peter Schwefel |
| collection | DOAJ |
| description | The operation and planning of distribution grids require the joint processing of measurements from different grid locations. Since measurement devices in low- and medium-voltage grids lack precise clock synchronization, it is important for data management platforms of distribution system operators to be able to account for the impact of nonideal clocks on measurement data. This paper formally introduces a metric termed Additive Alignment Error to capture the impact of misaligned averaging intervals of electrical measurements. A trace-driven approach for retrieval of this metric would be computationally costly for measurement devices, and therefore, it requires an online estimation procedure in the data collection platform. To overcome the need of transmission of high-resolution measurement data, this paper proposes and assesses an extension of a Markov-modulated process to model electrical traces, from which a closed-form matrix analytic formula for the Additive Alignment Error is derived. A trace-driven assessment confirms the accuracy of the model-based approach. In addition, the paper describes practical settings where the model can be utilized in data management platforms with significant reductions in computational demands on measurement devices. |
| first_indexed | 2024-03-10T06:12:14Z |
| format | Article |
| id | doaj.art-484537136b254041a9b7a430f6a0ef13 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T06:12:14Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-484537136b254041a9b7a430f6a0ef132023-11-22T19:59:18ZengMDPI AGSensors1424-82202021-10-012120690310.3390/s21206903On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid DataHans-Peter Schwefel0Imad Antonios1Lester Lipsky2Department of Electronic Systems, Aalborg University, 9220 Aalborg, DenmarkDepartment of Computer Science, Southern Connecticut State University, New Haven, CT 06515, USADepartment of Computer Science and Engineering, University of Connecticut, Storrs, CT 06269, USAThe operation and planning of distribution grids require the joint processing of measurements from different grid locations. Since measurement devices in low- and medium-voltage grids lack precise clock synchronization, it is important for data management platforms of distribution system operators to be able to account for the impact of nonideal clocks on measurement data. This paper formally introduces a metric termed Additive Alignment Error to capture the impact of misaligned averaging intervals of electrical measurements. A trace-driven approach for retrieval of this metric would be computationally costly for measurement devices, and therefore, it requires an online estimation procedure in the data collection platform. To overcome the need of transmission of high-resolution measurement data, this paper proposes and assesses an extension of a Markov-modulated process to model electrical traces, from which a closed-form matrix analytic formula for the Additive Alignment Error is derived. A trace-driven assessment confirms the accuracy of the model-based approach. In addition, the paper describes practical settings where the model can be utilized in data management platforms with significant reductions in computational demands on measurement devices.https://www.mdpi.com/1424-8220/21/20/6903electrical distribution gridsmeasurement errorsclock synchronization |
| spellingShingle | Hans-Peter Schwefel Imad Antonios Lester Lipsky On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data Sensors electrical distribution grids measurement errors clock synchronization |
| title | On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data |
| title_full | On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data |
| title_fullStr | On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data |
| title_full_unstemmed | On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data |
| title_short | On the Calculation of Time Alignment Errors in Data Management Platforms for Distribution Grid Data |
| title_sort | on the calculation of time alignment errors in data management platforms for distribution grid data |
| topic | electrical distribution grids measurement errors clock synchronization |
| url | https://www.mdpi.com/1424-8220/21/20/6903 |
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