| Autor: |
Mengxia Wang, Haitian Wang, Mingqiang Wang, Qiang Zhang, Shihao Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Energy Reports, Vol 8, Iss , Pp 332-339 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2352-4847 |
| DOI: |
10.1016/j.egyr.2022.02.175 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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