Transmission Lines Energization: Relevant Factors on Statistical Evaluation of Transient Overvoltages
نویسندگان
چکیده
This paper aims to evaluate important factors that affect switching transients overvoltages during transmission line energization. These factors include the number of repetitions to ensure the statistical characteristic of the study, the variation range of the mean closing time of the circuit breaker contacts, the model used for the representation of the transmission line and the influence of transposition. The shunt compensation degree is considered as an independent parameter. Digital simulations were performed with PSCAD/EMTDC software.
منابع مشابه
An Analysis of Transient Overvoltages during the Energization of Electric Ship Propulsion Systems
This paper addresses the resonance phenomena that can occur in an isolated distribution system during transient events such as repeated energizations or power converter switching. In particular, the aim of this study is to analyze the energization of an onboard radial distribution system installed on an electric ship and to determine how the various leakage parameters that can cause resonance p...
متن کاملEstimation of magnitude and time duration of temporary overvoltages using ANN in transmission lines during power system restoration
In most countries, the main step in the process of power system restoration, following a complete/partial blackout, is energization of primary restorative transmission lines. Artificial neural network (ANN) is employed for performing a nonlinear input–output mapping in this work, in order to estimate the temporary overvoltages (TOVs) due to transmission lines energization. In the proposed metho...
متن کاملEstimation of New Weighted Controlled Switching Overvoltage by RBFN Model
Mitigating switching overvoltages (SOVs) and conducting well-suited insulation coordination for handling stresses are very important in UHV transmission Lines. The best strategy in the absence of arresters is controlled switching (CS). Although elaborate works on electromagnetic transients are considered in the process of designing transmission systems, such works are not prevalent in day-to-da...
متن کاملSimulation of transient processes on overvoltage in electric transmission lines using ATP-EMTP
In this paper, the mathematical modeling and simulation of electromagnetic transient processes is considered, which is of vital importance for examining the overvoltage phenomenon of power transmission systems. In the mathematical models of the AC power transmission systems that contain a power source, the power transformer, transmission line, and power autotransformer block are presented. The ...
متن کاملArtificial Neural Network based Approach to Analyze Transient Overvoltages during Capacitor Banks Switching
The quality of electric power has been a constant topic of study, mainly because inherent problems to it can lead to great economic losses, especially in industrial processes. Among the various factors that affect power quality, those related to transients originating from capacitor bank (CB) switching in the primary distribution systems must be highlighted. This paper presents an Artificial N...
متن کامل