Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment
In operating power systems, when the current of the transmission component has a step change caused by outage events, it is of great significance to assess the allowable temperature rise time (ATRT) of the current violated transmission components online for ensuring the effectiveness of the correcti...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Energy Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S235248472200422X |
| _version_ | 1818049642384850944 |
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| author | Mengxia Wang Haitian Wang Mingqiang Wang Qiang Zhang Shihao Wang |
| author_facet | Mengxia Wang Haitian Wang Mingqiang Wang Qiang Zhang Shihao Wang |
| author_sort | Mengxia Wang |
| collection | DOAJ |
| description | In operating power systems, when the current of the transmission component has a step change caused by outage events, it is of great significance to assess the allowable temperature rise time (ATRT) of the current violated transmission components online for ensuring the effectiveness of the corrective control decision of the power system in emergency. The traditional calculation of the ATRT of overhead conductor after a step change of current does not consider the variability and uncertainty of micro-meteorological environment around the conductor in the temperature rise process, which is inconsistent with the actual condition and leads to conservative or aggressive results. In this paper, based on the data of operating environment and state of the overhead conductor obtained by the dynamic terminal rating (DTR) technique, the distribution laws of the micro-meteorological elements within thermal inertia time of the overhead conductor are analyzed, and a method for generating scenarios of the time series of meteorological elements is proposed. On this basis, the Monte Carlo simulation method is used to simulate the thermal dynamic processes of the overhead conductor during the temperature rise time, and then the probability distributions of the ATRT are obtained, which provides a reference for the operator to determine the allowable time for corrective control in emergency. The effectiveness of the proposed method is verified by numerical simulations in this paper. With the application of DTR technique, the proposed method has engineering application potential and values. |
| first_indexed | 2024-12-10T10:40:49Z |
| format | Article |
| id | doaj.art-737b4a5696a84e238ef26c78c3416968 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-12-10T10:40:49Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-737b4a5696a84e238ef26c78c34169682022-12-22T01:52:19ZengElsevierEnergy Reports2352-48472022-08-018332339Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environmentMengxia Wang0Haitian Wang1Mingqiang Wang2Qiang Zhang3Shihao Wang4Key Laboratory of Power System Intelligent Dispatch and Control, Ministry of Education (Shandong University), Jinan 250061, ChinaKey Laboratory of Power System Intelligent Dispatch and Control, Ministry of Education (Shandong University), Jinan 250061, ChinaKey Laboratory of Power System Intelligent Dispatch and Control, Ministry of Education (Shandong University), Jinan 250061, China; Corresponding author.Shandong Electric Power Dispatching and Control Center, Jinan 250001, Shandong Province, ChinaKey Laboratory of Power System Intelligent Dispatch and Control, Ministry of Education (Shandong University), Jinan 250061, ChinaIn operating power systems, when the current of the transmission component has a step change caused by outage events, it is of great significance to assess the allowable temperature rise time (ATRT) of the current violated transmission components online for ensuring the effectiveness of the corrective control decision of the power system in emergency. The traditional calculation of the ATRT of overhead conductor after a step change of current does not consider the variability and uncertainty of micro-meteorological environment around the conductor in the temperature rise process, which is inconsistent with the actual condition and leads to conservative or aggressive results. In this paper, based on the data of operating environment and state of the overhead conductor obtained by the dynamic terminal rating (DTR) technique, the distribution laws of the micro-meteorological elements within thermal inertia time of the overhead conductor are analyzed, and a method for generating scenarios of the time series of meteorological elements is proposed. On this basis, the Monte Carlo simulation method is used to simulate the thermal dynamic processes of the overhead conductor during the temperature rise time, and then the probability distributions of the ATRT are obtained, which provides a reference for the operator to determine the allowable time for corrective control in emergency. The effectiveness of the proposed method is verified by numerical simulations in this paper. With the application of DTR technique, the proposed method has engineering application potential and values.http://www.sciencedirect.com/science/article/pii/S235248472200422XPower systemEmergencyCorrective controlOverhead conductorAllowable temperable rise time |
| spellingShingle | Mengxia Wang Haitian Wang Mingqiang Wang Qiang Zhang Shihao Wang Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment Energy Reports Power system Emergency Corrective control Overhead conductor Allowable temperable rise time |
| title | Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment |
| title_full | Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment |
| title_fullStr | Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment |
| title_full_unstemmed | Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment |
| title_short | Online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment |
| title_sort | online assessment of allowable temperature rise time of overhead conductor after a step change of current in the operating environment |
| topic | Power system Emergency Corrective control Overhead conductor Allowable temperable rise time |
| url | http://www.sciencedirect.com/science/article/pii/S235248472200422X |
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