Busbar Fault Direction Identification Using Sequences of Displacement Vectors
In this paper, a novel busbar fault direction identification scheme is presented. The proposed scheme is based on sequences of displacement vectors. The proposed algorithm is fast and simple enough to be embedded in a differential relay to assist the percentage‐restraint differential algorithm.
Mostafa Sarlak
wiley +1 more source
Topology of a Hybrid DC Circuit Breaker with Coupled Inductor-assisted Current Limiting [PDF]
[Objective] With the increase in transmission capacity of DC grids, issues such as rapid rise of fault current, high amplitude, difficulty in breaking, and high cost arise in hybrid DC circuit breakers based on fully controlled power electronic devices ...
ZHANG Baoge, LI Guodong, HUANG Jiahong, CHANG Weishan
doaj +1 more source
On fully superconducting rectifiers and fluxpumps. A review. Part 2: Commutation modes, characteristics and switches [PDF]
This paper forms the second part of the review. Full and half wave superconducting transformer rectifiers are analysed. Modes of operation and loss mechanisms are detailed and a comparison between the behaviour of dynamos and rectifiers is presented ...
Kate, H.H.J. ten +1 more
core +2 more sources
Selectivity Beyond Mass: Real‐Time Isomer Separation Using SLIM IMS Coupled to PTR‐MS
ABSTRACT Proton‐transfer‐reaction—mass spectrometry (PTR‐MS) provides real‐time analysis of volatile organic compounds (VOCs) relevant to atmospheric research, food and flavor characterization, industrial process control, and medical applications. However, PTR‐MS is inherently limited in its ability to resolve isomers of molecules with the same mass‐to‐
Jacob Jordan +6 more
wiley +1 more source
Optimisation of commutation circuit parameters for DC vacuum circuit breakers
As the environmental problems caused by the consumption of the non-renewable fossil energy are getting increasingly serious, the new energy power generation has received wide attentions.
Deen Yu, Hai Chen, Wei Liu, Xiaoming Liu
doaj +1 more source
Logic-controlled solid state switchgear for 270 volts dc [PDF]
A feasibility study to design and demonstrate solid state switchgear in the form of circuit breakers and a power transfer switch is described. The switchgear operates on a nominal 270 V dc circuit and controls power to a load of up to 15 amperes.
Buchanan, E. E., Jr. +2 more
core +1 more source
Experimental validation of an advanced DC protection scheme for enabling an LVDC last mile distribution network [PDF]
LVDC distribution systems have the potential to support future realisation of smart grids functionality. They do however present significant protection challenges that existing schemes based on DC fuses and conventional circuit breakers cannot manage due
Burt, Graeme +2 more
core
Optimized algorithm of active injection circuit to calibrate DC circuit breaker
Abstract The widely acknowledged high-voltage direct current (HVDC) technology has now been accepted as a solution of connecting renewable energy sources. However, this technology is vulnerable when facing DC-side faults; due to the low DC impedance, the fault current can rise to an extremely high value in a short time.
Liu, L. (author) +2 more
openaire +3 more sources
Simulation of circuit-breaker trip unit [PDF]
Jištění elektrických zařízení je důležité nejen z důvodu ochrany proti zničení účinky elektrického proudu, ale také ochrany před úrazem elektrickým proudem lidí či domácích zvířat.
Dostál, Lukáš
core
Offshore DC Grids as an Interconnection of Radial Systems : Protection and Control aspects [PDF]
Peer ...
Jovcic, Dragan +3 more
core +1 more source

