Results 21 to 30 of about 1,158 (199)

An economical hybrid DC circuit breaker with pre-current-limiting capability

open access: yesEnergy Reports, 2023
Multi-terminal flexible high-voltage-direct-current (HVDC) transmission and DC grid technology are developing rapidly, and the hybrid DC circuit breaker (DCCB) is usually used to protect the DC system, which can quickly remove the fault current and make ...
Guanlong Jia   +4 more
doaj   +1 more source

An Adaptive Reclosing Switch Based on Shunt Resistance

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract In order to solve problems that the low coincidence success rate of the automatic reclosure of distribution network and short-circuit current has a large impact on the system when it coincides with the permanent fault, a shunt resistance type of adaptive reclosing switch is proposed.
Jian Liu, Yu Lei, Zhihua Zhang
openaire   +1 more source

Energy and Load Curtailment Based Indices in Probabilistic Transient Stability Studies

open access: yesJournal of King Saud University: Engineering Sciences, 1997
In this paper, stochastic models for both simultaneous and adaptive reclosing are presented and examined using a new set of probabilistic transient stability risk indices. The developed indices are based on load curtailments resulting from bus isolations
Roy Billinton, Saleh Aboreshaid
doaj   +1 more source

Influence of fault-ride-through requirements for distributed generators on the protection coordination of an actual distribution system with reclosers [PDF]

open access: yes, 2017
This paper analyses the existing protection scheme of a real distribution system with distributed generators, in Greece. Network protection utilizes three successive reclosers at the main trunk and fuses at the laterals.
Konstantopoulos, G.C.   +4 more
core   +1 more source

A Framework for Robust Assessment of Power Grid Stability and Resiliency [PDF]

open access: yes, 2016
Security assessment of large-scale, strongly nonlinear power grids containing thousands to millions of interacting components is a computationally expensive task.
Turitsyn, Konstantin, Vu, Thanh Long
core   +1 more source

Peak-ratio analysis method for enhancement of LOM protection using M class PMUs [PDF]

open access: yes, 2016
A novel technique for loss of mains (LOM) detection, using Phasor Measurement Unit (PMU) data, is described in this paper. The technique, known as the Peak Ratio Analysis Method (PRAM), improves both sensitivity and stability of LOM protection when ...
Booth, Campbell D.   +2 more
core   +1 more source

Development of a Leader-End Reclosing Algorithm Considering Turbine-Generator Shaft Torque

open access: yesEnergies, 2017
High-speed auto-reclosing is used in power system protection schemes to ensure the stability and reliability of the transmission system; leader-follower auto-reclosing is one scheme type that is widely used.
Gyu-Jung Cho   +6 more
doaj   +1 more source

Setting Free Fault Location for Three-Terminal Hybrid Transmission Lines Connected With Conventional and Renewable Resources

open access: yesIEEE Access, 2023
Three-terminal hybrid transmission lines (TTHTLs) are attractive from both environmental and commercial view. Hybrid transmission lines are growing due to urbanization, connecting an industrial load and renewable integration.
Kukkala Likhitha, O. D. Naidu
doaj   +1 more source

System configuration, fault detection, location, isolation and restoration: a review on LVDC Microgrid protections [PDF]

open access: yes, 2019
Low voltage direct current (LVDC) distribution has gained the significant interest of research due to the advancements in power conversion technologies. However, the use of converters has given rise to several technical issues regarding their protections
Bououden   +11 more
core   +1 more source

Permanent fault identification for distribution network based on characteristic frequency signal injection using power electronic technology

open access: yesFrontiers in Energy Research, 2022
In order to identify the fault nature when phase-to-phase short circuit fault occurs in distribution lines and realize adaptive reclosing of distribution lines more accurately, a fault identification scheme using an inverter-based power electronic ...
Zhihua Zhang   +5 more
doaj   +1 more source

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