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The number of electric vehicles (EVs) is expected to increase significantly in the near future, which will affect the operation of future power networks. This study investigates the impact of EVs on the distribution network voltage profile by collecting measurements from residential, slow commercial, and fast public EV charging stations throughout the annual cycle. It is revealed from the data that annual utilization factors for residential, slow commercial, and fast public charging stations are 89%, 55%, and 24%, respectively. The optimal power flow solutions have been presented without the EV and with EV (home, commercial, and public) load profiles. Simulation results identify the voltage violation's extent, instant, and duration that may affect the future distribution grid. Most voltage violations happen in the evening, weekday afternoon, and midday for residential, slow commercial, and fast public EV charging stations, respectively. Furthermore, multiple enabling technologies ....
The clustering of historical electricity consumption data is an effective means of developing representative load profiles for long-term energy planning. This paper presents a multi-dimensional approach for clustering, considering scattering and separation metrics and the number of clusters. A novel hybrid approach to solve the clustering function is also proposed: a combination of Invasive Weed Optimization (IWO) and wavelet mutation strategy. The hybrid method is applied to half-hourly metered electricity consumption data from the Civic Centre of a large local (municipal) government in Perth, Western Australia, to create representative seasonal load profiles. The novel clustering approach is then tested against the well-known k-means method using Davies-Bouldin and silhouette indices. In each seasonal clustered profile, the hybrid method is found to outperform the k-means method. The hybrid method has been identified as an effective clustering approach for analyzing the behavior of l ....
香港边城青年脸书专页宣布停运光华日报 | 1910年创刊 创新每一天生活 kwongwah.com.my - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kwongwah.com.my Daily Mail and Mail on Sunday newspapers.
16 участков дорог ремонтируют в Нижнем Новгороде vgoroden.ru - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from vgoroden.ru Daily Mail and Mail on Sunday newspapers.
Новую дорогу построят в нижегородском ЖК «Окский берег» vgoroden.ru - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from vgoroden.ru Daily Mail and Mail on Sunday newspapers.