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Power System Protection [PDF]

open access: yes, 2021
This report provides review of importance of power system protection and presents different techniques available in practical situations. The material provided in this report is available online on different resources. Moreover, this report examines different types of faults in power system and discusses the consequences of the faults.
Paul M. Anderson   +4 more
  +5 more sources

Comparison of Grounding Grid Parameters Between Copper and Galvanized Flat Steel [PDF]

open access: yesE3S Web of Conferences, 2021
In the intelligent substation, the shell of the secondary equipment is connected to the ground grid locally. When the short circuit fault current is injected into the grounding grid to cause the ground potential rise, the potential difference between the
Yu Yue   +5 more
doaj   +1 more source

Parameter Evaluation Procedure for Gapped Core Current Transformers Considering Accuracy Requirements under Transient Conditions [PDF]

open access: yesE3S Web of Conferences, 2020
Particular features of gapped core current transformers and characteristics of transient phenomena inside them are under consideration; a procedure is proposed that allows for evaluating the excitation limiting e.m.f.
Vorobiev Victor   +6 more
doaj   +1 more source

A Hybrid Genetic Algorithm and Vector Fitting Based Approach for Approximation of Propagation Function of Transmission Lines [PDF]

open access: yesE3S Web of Conferences, 2020
A hybrid genetic algorithm and vector fitting based approach is proposed for the approximation of the propagation function of transmission lines. In this work, the process of guessing the number of poles and then adjusting corresponding delay times in ...
Yu Yue, Ge Qingyu, Jiao Chongqing
doaj   +1 more source

Optimization Method for Multiple Measures to Mitigate Line Overloads in Power Systems

open access: yesEnergies, 2021
Line overload is one of the important causal factors of cascading failures and blackouts in power systems. An optimization method for protection and control measures to mitigate line overloads is proposed in this study.
Jinghan He, Ninghui Han, Ziqi Wang
doaj   +1 more source

The Microstructure and Properties of Nitrided Chromium Coating on 316 Stainless Steels Fabricated by Electrodeposition and Electrolytic Nitriding for PEMFC Bipolar Plate

open access: yesInternational Journal of Electrochemical Science, 2021
In this paper, a nitrited chromium composite coating is fabricated as a protective coating for the 316 stainless steels bipolar plates by a combination process of electrodeposition and liquid-phase plasma electrolysis. The pre-treatment of chemical micro
Yaxue Wang   +4 more
doaj   +1 more source

Faulty Feeder Identification and Fault Area Localization in Resonant Grounding System Based on Wavelet Packet and Bayesian Classifier

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
Accurate fault area localization is a challenging problem in resonant grounding systems (RGSs). Accordingly, this paper proposes a novel two-stage localization method for single-phase earth faults in RGSs.
Jingwen Chen   +5 more
doaj   +1 more source

Coupling characteristic analysis of power system frequency dynamic and power angle oscillation

open access: yes电力工程技术, 2023
For the analysis of the coupling characteristics of the power system frequency dynamic and power angle oscillation, the mechanism of the two-machine system under disturbances is derived in this paper, and the mechanism of the multi-machine system is ...
MA Ruicong   +5 more
doaj   +1 more source

Inhibition Synergism Between Alkyl Imidazoline and Potassium Iodide on the Corrosion of Carbon Steel in Citric Acid Solution

open access: yesInternational Journal of Electrochemical Science, 2020
The synergistic inhibition effect of the complex of 2-undecyl-N-carboxymethyl-N-hydroxyethly imidazoline (UHCI) and potassium iodide (KI) on the corrosion of 45# carbon steel subjected to 4 wt.% citric acid solution is explored by weight loss testing ...
Jianjia Shen   +6 more
doaj   +1 more source

EMD/HT‐based local fault detection in DC microgrid clusters

open access: yesIET Smart Grid, 2022
DC faults can create serious damages if not detected and isolated in a short time. This paper proposes a fault detection technique for DC faults to enhance the protection of DC microgrid clusters.
Navid Bayati   +5 more
doaj   +1 more source

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