Showing 1-25 of 280 resultsfor "Index Terms":Downstream Section
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Locating Faults with Ease- A Fault Current Matching Method for Distribution Feeders
Md. Nazrul Islam Siddique;Carlos Macana;Krishneel Prakash;Ashish Kumar Karmaker;Saad Mekhilef;Hemanshu Pota
2023 IEEE International Conference on Energy Technologies for Future Grids (ETFG)
Year: 2023 | Conference Paper |
Locating faults in large distribution networks presents a major challenge due to limited measurement data. Deploying smart sensors in the network could improve network observability, but they pose significant techno-economic challenges. To overcome this limitation, the paper proposes a cost-effective fault current-matching technique that estimates fault location using network data and fault resist...Show More
Single Particle and Collective Effects Observed in the Electron Beam of the Maryland ERA Experiment
W. W. Destler;D. W. Hudgings;R. A. Kehs;P. K. Misra;M. J. Rhee
The formation of rotating, relativistic electron beams with properties suitable for collective ion acceleration has been studied under a variety of experimental conditions. A straight, cylindrical, relativistic electron beam (typical energy 2-3 MeV, typical current 2-10 kA) is passed through a narrow magnetic cusp, and the resulting rotating downstream beam has been studied using a number of diagn...Show More
Tendency analysis on morphologic changes of reservoir downstream river section
2015 International Conference on Transportation Information and Safety (ICTIS)
Year: 2015 | Conference Paper |
Because the development of reservoir downstream bed erosion is periodical and the resistance of the river bed changes over time during the erosion process, morphologic changes of the reservoir downstream river section is not always one-way. This paper provides a comprehensive analysis on the characteristics of morphologic changes below many domestic and foreign storage reservoirs and establishes a...Show More
The research on calculation of water surface profile in channel by Runge - Kutta method
2011 International Symposium on Water Resource and Environmental Protection
Year: 2011 | Conference Paper |
Cited by: Papers (2)
The basic equation of steady gradually varied flow describes the variation of water depth with flow process. Because it's difficult to be solved directly, the standard step method becomes the general way to calculate the water surface profile, which will entail many problems when the iteration method must be used. Thus the paper does a research on Runge-Kutta method to solve the differential equat...Show More
Liquid Deuterium Neutron Attenuator for Broad-Band Photon Beam Facility
The photo-production facility at Fermilab utilizes a two section liquid deuterium attenuator, 103 feet in length, to reduce the neutron flux and produce a pure high energy photon beam. The facility is located in the Proton East experimental hall. The facility also includes nine 10 foot long sweeping magnets. A unique refrigeration system supplies mechanically refrigerated helium gas trace cooling ...Show More
Numerical Simulation of the Impact of Hydropower Development in Mountain and Canyon Areas on Regional Wet Environment
Bei Zhu;Shiyan Wang;Kaiqi Chen;Chang Liu;Shilin Zhao;Zhen Han;Yanliang Du
In the wake of the construction of hydropower projects in the canyon area, the change of subsurface caused by the variations of water area transforms the heat transport and moisture circulation between earth and atmosphere systems, which will probably have a certain degree of influence on the climate of the surrounding river valley. In this paper, based on CFD elaborate model (ANSYS Fluent), a use...Show More
A Novel Fault Section Location Method for Small Current Grounding Fault Based on Hilbert-Huang Transform with Wavelet Packet Transform Preprocessing
2018 11th International Conference on Intelligent Computation Technology and Automation (ICICTA)
Year: 2018 | Conference Paper |
Cited by: Papers (5)
In accordance with the characteristic of small current grounding fault, transient zero-mode current on both sides of the healthy section having high similarity and both sides of the fault section having low similarity, this paper proposed a novel fault section location method for small current grounding fault based on Hilbert-Huang transform with wavelet packet transform preprocessing(WPT-HHT). Fi...Show More
A novel location method for single-phase grounding fault in small current grounding distribution network based on difference of phase current fault component between fault and non-fault phases
2020 IEEE Texas Power and Energy Conference (TPEC)
Year: 2020 | Conference Paper |
Cited by: Papers (5)
Single-phase grounding fault is the most frequent fault in distribution network small current grounding systems. But the misjudgment ratios of existing location methods are always high, which influences the power distribution stability. This is due to a series of problems such as insignificant characteristics of steady-state electrical quantities and short duration of transient zero-sequence fault...Show More
Interobject spacing control and controllability of a manufacturing transportation system
Proceedings of the 1998 American Control Conference. ACC (IEEE Cat. No.98CH36207)
Year: 1998 | Conference Paper |
Cited by: Papers (3)
Presents a control and controllability approach for a general manufacturing transportation system. The system transports objects from a production unit to a stamping/packaging section. At arrival time, the position and velocity of every object must synchronize with the stamping device. The system constraints and a simplified model of the system dynamics are developed. The hybrid character of the s...Show More
Using the traffic heterogeneity of Chinese toll highway networks for hierarchical clustering
2016 Conference on Technologies and Applications of Artificial Intelligence (TAAI)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
The spatial clustering of highway traffic is of great interest to researchers and policy makers. In this paper, instead of using the microscopic traffic parameters in the traditional clustering methods, we introduce a new heterogeneity index clustering the sections of a highway based on differences in the content, a.k.a. “Heterogeneity”, in their flow, which can be used as a universal guideline fo...Show More
Fault Location in Ungrounded Neutral System with Distributed Generators
Yangjie Wang;Qingle Pang;Xinzhe Jiang;Tong Cao;Jingyang Sun;Songyi Han
2023 IEEE 6th International Conference on Electronic Information and Communication Technology (ICEICT)
Year: 2023 | Conference Paper |
In response to the increasingly complex fault location problem caused by more and more access of distributed power sources to distribution networks, this paper proposes a fault location method based on the distribution characteristic of fault zero-sequence voltage. This method only requires the position of detection points and the zero-sequence voltage information at these points to construct reli...Show More
Multi-Timescale-Based Fault Section Location in Distribution Networks
Qingle Pang;Lin Ye;Houlei Gao;Xinian Li;Yangjie Wang;Tong Cao
To meet the requirements of quickness and accuracy for fault location in smart distribution networks with high penetration of distributed generations, we propose an integrated fault section location method based on multiple timescales. On the millisecond timescale, we present a distributed fault section location method based on fault current polarity value comparison (PVC) using the first half-cyc...Show More
Energy-efficient cascaded bit-interleaved converged optical access/in-building network protocol
This paper proposes the cascaded bitinterleaved optical network protocol, an energy-efficient solution aiming at low power consumption in converged optical access/in-building networks while providing high data rates to end users, and a novel network architecture for optical access/in-building networks. In the proposed network architecture, optical–electrical–optical (OEO) regeneration is employed ...Show More
Current Zero Phenomena in an Orifice Type Gas Blast Interrupter
In an orifice type gas blast interrupter a rather "quiet" arc section of about 10 mm length close to the vena contracta was dominant during thermal recovery, both in air and in SF6. For small dI/dt values, the associated power loss was only 1000 watts for air and 600 watts for SF6, which is close to an estimated laminar loss of 400 watts for air.Show More
Design and Analysis of an XGS-PON Technology for an Urban Area FTTH Network with Unidirectional and Bidirectional Transmission
2023 9th International Conference on Wireless and Telematics (ICWT)
Year: 2023 | Conference Paper |
Cited by: Papers (2)
FTTH is a network technology from the head office to the user area using a fiber optic cable. Urban areas are strategic areas for deploying FTTH networks. In 2022, Indonesia had an average data rate of 16.52 Mbps. With an increasing population, greater bandwidth is needed. Therefore, this research was conducted to design an FTTH network based on XGS-PON (10 Gigabit Symmetrical-Passive Optical Netw...Show More
Kinetic approaches to particle acceleration at cosmic ray modified shocks
Kinetic approaches provide an effective description of the process of particle acceleration at shock fronts and allow us to take into account the dynamical reaction of the accelerated particles as well as the amplification of the turbulent magnetic field as due to streaming instability. The latter does in turn affect the maximum achievable momentum and thereby the acceleration process itself, in a...Show More
Traffic flow on freeways is a nonlinear, many-particle phenomenon, with complex interactions between the vehicles. This paper presents a stochastic hybrid model of freeway traffic at a time scale and at a level of detail suitable for on-line flow estimation, for routing and ramp metering control. The model describes the evolution of continuous and discrete state variables. The freeway is considere...Show More
Short-Term Traffic Flow Prediction Based on Parallel Quasi-Newton Neural Network
2009 International Conference on Measuring Technology and Mechatronics Automation
Year: 2009 | Conference Paper |
Cited by: Papers (7)
Identifying and predicting the situation of traffic flow play an important role in traveler information broadcast and real-time traffic control. In this paper, a short-term traffic flow prediction model based on the parallel self-scaling quasi-Newton (SSPQN) neural network is presented. In this method, a set of parallel search directions are generated at the beginning of each iteration. Each of th...Show More
The advanced distributed ramp metering system (ARMS)
Second Workshop on Parallel and Distributed Real-Time Systems
Year: 1994 | Conference Paper |
Cited by: Papers (2)
Ramp metering is an important technique to effectively utilize the freeway capacity by regulating the traffic flow of freeway entrance ramps. In this extended abstract, we discuss the outline of the free flow control algorithm of the Advanced distributed Ramp Metering System, ARMS, for the real-time control of freeway ramp metering systems. ARMS consists of three levels of control algorithms integ...Show More
Fault distance localization method for heterogeneous distribution networks
2014 IEEE PES General Meeting | Conference & Exposition
Year: 2014 | Conference Paper |
Cited by: Papers (1)
In many cases the capacity of a network to endure a fault without ensuing major problems or long blackouts is related to the capacity to locate and isolate the faulty section. Transmission grids already have in general an evolved fault localization mechanism thanks to many distance protections, unlike distribution grids. This paper describes a fault localization method for heterogeneous distributi...Show More
Using Multi-Temporal Optical Remote Sensing Images For Monitoring Post-Failure Evolution Of The Aniangzhai Landslide In Danba County, China
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium
Year: 2023 | Conference Paper |
Cited by: Papers (1)
The ancient Aniangzhai (ANZ) landslide in Danba County, Sichuan Province of southwest China was reactivated after a series of complex hazard events that occurred in June 2020. Since then, emergency engineering work was carried out to prevent further failure of the reactivated landslide. This study investigates the multi-temporal optical images (3 m spatial resolution) acquired from the PlanetScope...Show More
To enhance the cost effectiveness of the distribution automation system (DAS), this paper proposes the Artificial Neural Networks (ANNs) to derive the Line Switch Unit Commitment by minimizing the total cost of customer service outage and investment cost of line switches. The customer interruption cost is determined according to the customer type, loading, outage frequency and number of automated ...Show More
Numerical simulation of influence of 90°-bend pipeline geometric shape on local loss coefficient
2010 International Conference on Mechanical and Electrical Technology
Year: 2010 | Conference Paper |
Cited by: Papers (1)
Local head loss coefficients of the 90°-bend pipeline for Hydraulic calculation in engineering is empirical value and formula normally experimentally. The values may vary about 2 to 4 times because of the different experimental conditions. This will bring large error for the accurately calculation of the local head loss. Numerical simulation was applied on the pipe with 90° bend that widely used i...Show More
Highway Traffic Flow Prediction Based on Optimized KNN of Spark
2021 4th International Conference on Artificial Intelligence and Big Data (ICAIBD)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Accurate prediction of high-speed traffic flow is of great significance for alleviating traffic pressure, reducing congestion, and reducing environmental pollution. Aiming at the low efficiency of the KNN prediction algorithm in the training and testing of traffic big data on a single machine, this paper proposes a distance-weighted KNN algorithm based on Spark. At the same time, cross-validation ...Show More
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