Notice bibliographique
Résumé
ABSTRACT \nAsset Risk Management for Electric Power Grids \nNiloufar Youssefi \nCivil Infrastructure is essential for the quality of life in developed and developing countries. Since electric power supply is needed for the operation of other vital infrastructure, it is ranked as the highest critical infrastructure. There are substantial adverse impacts on society when power grids fail, resulting in interruption and/or degradation of services. Such failure can cause heavy traffic congestions resulting from nonfunctioning traffic lights, and disturbances for other critical infrastructure elements such as water and sewage treatment plants. \nIn order to ensure reliability of the bulk power system (BPS) in North America, the North American Electric Reliability Corporation (NERC) requires that power companies submit reports when sufficiently enormous instabilities happen within their territories in order to share the experiences and lessons learned, and to suggest solutions that utilities can apply to their procedures during unusual situations. To simplify and organize information, the NERC has divided the BPS of North America into eight zones, three of which consist of both US states and Canadian provinces. The research presented here focuses on the Canadian part of NPCC zone which covers Quebec, Ontario, New Brunswick and Nova Scotia. \nThe main purpose of this research is to identify factors affecting power outages in the eastern Canada and develop a model for predicting the likelihood of power outage occurrences based on weather forecasted data. For this reason, System Disturbances Reports from 1992 to 2009 have been scrutinized to determine the conditions in which an attack on power grids can likely happen. According to these reports, various reasons were found to trigger power outages, including equipment failure, voltage reduction, human error, etc. However, weather conditions are the paramount cause of unavailability of power service in the northeastern district. Weather conditions variables such as wind speed, temperature, humidity, precipitation and lightning are obtained for those same periods from the Environment Canada database. In addition, in two other variables (i.e. electric consumption index and electric network size) are considered as the factors that are likely to impact power outage incidents indirectly. \nBased on historical data gathered for weather conditions and power outages, different types of Artificial Neural Network models (i.e. BPNN, GRNN, and PNN) were studied and developed to predict the likely occurrence of power outage utilizing weather forecasted data for four eastern Canadian provinces. Two types of datasets are used for training the models: Dataset I considers the extreme values for all the weather variables, and Dataset II, which consists the extreme value for wind speed (the most critical factor affecting the power grids) plus the values of the other weather variables at the same time that the wind speed reached its maximum value. The results indicate that the best performing model is PNN that was trained with Dataset I for it provides more accurate results. The model is also trained using Quebec dataset, which indicates that data for a specific location is expected to lead to better results. Social cost for electric power outage are then estimated four sectors; residential, commercial, industrial and agriculture. \nAs a result, once the average duration of power outage is recognized as well as its likelihood of occurrence, the social cost of that power failure could be estimated in the four sectors. The present research helps power companies to predict the likelihood of electric power outage based on weather forecasting data. Furthermore, they are able to estimate the social cost of electric power failure in advance. This will provide useful information for further actions in risk mitigation, and will aide professionalisms in the process of creating choices to improve opportunities and to lessen threats.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,002 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».