نتایج جستجو برای: short circuit sc fault
تعداد نتایج: 625656 فیلتر نتایج به سال:
This paper analyses the method to limit fault currents and pre fault bus voltage by the use of Thyristor Controlled phase Shifting transformer (TCPST). The mathematical model of power system equipped with TCPST was systematically derived. The magnitude of the series reactance plays a very important role to limit the short circuit current, as well as TCPST inject a series voltage which reduces t...
Due to the rising power demand and increasing population worldwide, electrical power networks have been extensively growing and striving to satisfy the escalating loads. This necessitates the need for using Flexible AC Transmission System (FACTS) devices which have become indispensable during normal and abnormal operating conditions. This paper investigates the impact of using series FACTS devi...
In this paper, a modern synthetic framework which has the capability to rapidly Classify and locate short circuit faults over transmission lines is presented. The proposed algorithm singles out short circuit faults based on the measured voltage waveform and three-phase current when fault events occur in power transmission lines. The values resulting from the three-phase currents and the three-p...
In this paper, authors present a comparative study of inductive and resistive superconducting fault current limiters (SFCL) from current limitation and power system transient stability point of view. Different types of SFCL can be used to decrease the amplitude of fault current in a power system. The two most used are resistive type (rSFCL) and inductive type (iSFCL). However, no studies have b...
In this paper, a new fast and accurate method for fault detection, location, and classification on multi-terminal DC (MTDC) distribution networks connected to renewable energy and energy storages presented. MTDC networks develop due to some issues such as DC resources and loads expanding, and try to the power quality increasing. It is important to recognize the fault type and location in order ...
Undetectable shorts may decrease the long term reliability of a circuit, cause intermittent failures, add noise or delay, or increase test pattern generation costs. This paper describes the undetectable non-feedback shorts that are likely to occur in standard cell implementations of the ISCAS'85 combinational test circuits. For ten layouts of each circuit, all shorts between adjacent wires were...
Because of the special fault-current characteristics of the inverter-interfaced distribution generator (IIDG) , the conventional fault-analysis method based on the synchronous generator cannot be used for the power grid with IIDGs. The paper points out the problems of using the conventional fault-analysis method for the power grid with IIDGs and proposes a novel fault-analysis method for the po...
A squaraine dye incorporating two carboxylic acid attaching groups has been synthesised and used successfully in both liquid and solid-state solar cells, with solar energy to electricity conversion efficiencies (eta) under AM 1.5 G irradiation (100 mW cm(-2)) of 3.7 and 1.5% and short-circuit current densities (J(sc)s) of 8.6 and 4.2 mA cm(-2), with open-circuit voltages (V(oc)) of 591 and 681 ...
Quantum-dot Cellular Automata (QCA) is an emerging and promising technology that provides significant improvements over CMOS. Recently QCA has been advocated as an applicant for implementing reversible circuits. However QCA, like other Nanotechnologies, suffers from a high fault rate. The main purpose of this paper is to develop a fault tolerant model of QCA circuits by redundancy in hardware a...
1. The commonly used method of passing short-circuit current (/sc) across insect epithelia through Ag-AgCl electrodes, without the use of salt bridges, leads to significant OH~ production at the cathode (lumen side) when high currents are applied. 2. The alkalization of the lumen previously reported when cyclic AMP was added to short-circuited locust hindgut is a result of this phenomenon rathe...
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