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40 Results for the search "voltage":

Author: h.gras
Type: Example
Downloaded: 43 times
Date: 2019-04-16
Rating: * 0 vote(s)
0/10


Load-flow voltage violation assessment


Description:
This example shows a way to automatically detect voltage violations of the load-flow results.
Users can set low and high limits for each bus (for example 0.95pu-1.05pu).

Tag(s): voltage, violation, load-flow
Author: h.gras
Type: Model
Downloaded: 147 times
Date: 2018-06-08
Rating: * 1 vote(s)
5/10


Vacuum Circuit breaker (VCB)


Description:
Three main characteristics of VCBs have been taken into account in the implemented model:
1. the chopping current value;
2. the cold withstand voltage characteristic (or cold gap breakdown v... see more

Tag(s): Vacuum, circuit breaker, VCB,
Author: thpapad
Type: Document
Downloaded: 48 times
Date: 2017-11-03
Rating: * 0 vote(s)
0/10


MIMO-OFDM Narrowband-PLC in Distribution Systems: Impact of Power Transformers on Achievable Data Rates


Description:
Power-line communication (PLC) is gaining a renewed interest, due to the smart grid (SG) emerging communication requirements. Among other communication technologies, PLC is a very efficient and feasib... see more

Tag(s): Distribution lines, distribution transformers, MIMO-OFDM, power-line communication, smart grids
Author: thpapad
Type: Document
Downloaded: 127 times
Date: 2017-11-03
Rating: * 0 vote(s)
0/10


INDUCED VOLTAGES AND CURRENTS: OVERVIEW AND EVALUATION OF SIMULATION MODELS AND METHODOLOGIES


Description:
In this paper induced voltages and currents caused by underground cables are calculated in cable sheaths and nearby metallic pipelines. The performance of several simulation methods and models are inv... see more

Tag(s): induced voltages
Author: h.gras
Type: Model
Downloaded: 61 times
Date: 2017-09-26
Rating: * 0 vote(s)
0/10


LVRT OVRT function


Description:
This device is an OVRT LVRT protection device.
The user enters the curves points.
It is assumed that the curve is horizontal between two points.

Tag(s): LVRT, OVRT, ride, through, FRT, undervoltage, overvoltage
Author: n.sene
Type: Publication
Downloaded: 287 times
Date: 2015-10-22
Rating: * 4 vote(s)
10/10


Fault Current Limiters in Industrial Power Systems


Description:
The concept of saturable core fault current limiter (FCL) is relatively known nowadays. It usually consists of two reversely magnetized cores per phase to effectively limit the fault current passively... see more

Tag(s): saturable core fault current limiter (FCL), industrial power system, induction machine, EMTP; fault current analysis, medium voltage
Author: h.gras
Type: Example
Downloaded: 382 times
Date: 2015-06-16
Rating: * 2 vote(s)
5/10


Content of the webinar studies from A to Z on TRV


Description:
Designs built or presented during the webinar of the series Studies from A to Z on Transient Recovery Voltage
Models built:
- Rating TRV envelop (IEC 62271-100 / C37.010 - 2011)
- CP / ... see more

Tag(s): TRV, Transient recovery voltage, short-line fault, terminal fault, substation, 62271, 37.011, lines, switching, thevenin
Author: n.sene
Type: Publication
Downloaded: 276 times
Date: 2015-04-02
Rating: * 1 vote(s)
2/10


Short-Term Scheduling of Active Distribution Systems


Description:
The latest distribution management systems tend to incorporate optimization functions for the short-term scheduling of the various energy and control resources available in the network (e.g., embedded... see more

Tag(s): Distributed generation, operation of distribution networks, MILP.
Author: n.sene
Type: Publication
Downloaded: 276 times
Date: 2015-04-02
Rating: * 2 vote(s)
3/10


Indirect Lightning Performance of a Real Distribution Network with focus on Transformer Protection


Description:
The paper applies the Monte Carlo procedure proposed by the Authors to evaluate the indirect lightning performance of a real medium-voltage distribution network, which includes feeders and laterals, p... see more

Tag(s): induced voltages; distribution networks; Monte Car lo method; lightning protection; MTBF.
Author: n.sene
Type: Publication
Downloaded: 276 times
Date: 2015-04-02
Rating: * 1 vote(s)
5/10


Selection of MV/LV Transformers to be Protected by Surge Arresters against Indirect Lightning Overvoltages


Description:
The papers addresses the problem of locating surge protective devices in a medium voltage distribution network by means of an accurate computer model for the calculation of lightning induced overvolta... see more

Tag(s): distribution network; surge arresters; lightning protection.
Author: n.sene
Type: Publication
Downloaded: 276 times
Date: 2015-04-02
Rating: * 0 vote(s)
0/10


Indirect-Lightning Performance of Overhead Distribution Networks With Complex Topology


Description:
The paper deals with the evaluation of the indirect-lightning performance of overhead distribution networks. The novelty of this contribution is that it takes into account the inherent complexity of d... see more

Tag(s): LIOV-EMTP, lightning-induced overvoltages, lightning performance, power quality, distribution systems, overhead power lines.
Author: n.sene
Type: Publication
Downloaded: 276 times
Date: 2015-04-02
Rating: * 0 vote(s)
0/10


lCT -power Co-simulation Platform for the Analysis of Communication-based Volt/Var Optimization in Distribution Feeders


Description:
The paper presents an ICT and power co-simulation platform for the analysis of the voltlvar control and relevant optimization in medium voltage distribution feeders, achieved by means of a system of d... see more

Tag(s): Co-simulation, Networked Control Systems, Power distribution feeders, Voltlvar optimization.
Author: n.sene
Type: Publication
Downloaded: 276 times
Date: 2015-04-02
Rating: * 0 vote(s)
0/10


Simulation of the Volt/Var Control in Distribution Feeders by Means of a Networked Multiagent System


Description:
The adoption of networked multiagent systems (MAS) has been recently proposed for the solution of the volt/var control (VVC) problem in distribution feeders. However, constraints and limitations due t... see more

Tag(s): Cosimulation, medium voltage distribution feeders, multiagent systems (MAS), networked control systems (NCS), phasor measurement unit (PMU), volt/var control (VVC).
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


DISPERSED ENERGY RESOURCES SCHEDULING FOR THE INTENTIONAL ISLANDING OPERATION OF DISTRIBUTION SYSTEMS


Description:
The paper presents an algorithm for the automatic optimal scheduling of dispersed energy resources (DERs) and of under-load tap changers (ULTCs) position. The aim of the scheduling problem consists in... see more

Tag(s): Dispersed generation, active distribution networks, islanding operation.
Author: n.sene
Type: Publication
Downloaded: 287 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


On the Mitigation Effect of Surge Arresters on the Lightning Performance of Overhead Distribution Lines


Description:
For the accurate statistical assessment of the lightning performance of distribution lines one needs to
take into account the presence of protection devices such as surge arresters and shielding ... see more

Tag(s): Lightning statistics, induced overvoltages, lightning performance of distribution lines, surge arresters, shielding wires groundings, Monte Carlo method.
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


AN ADVANCED INTERFACE BETWEEN THE LIOV CODE AND THE EMTP-RV


Description:
Accurate evaluation of the response of overhead distribution lines to lightning electromagnetic pulse (LEMP) represents an important aspects in insulation coordination of distribution network. The imp... see more

Tag(s): LIOV, EMTP-RV, LEMP
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 2 vote(s)
5/10


Correlation of lightning events and faults in distribution power networks


Description:
The paper deals with the analysis of the possible correlation between cloud-to-ground lightning discharges and relay operations inferred by using the experimental data obtained means of a measurement ... see more

Tag(s): Lightning protection, lightning-to-fault correlation, lightning location systems, lightning performance of distribution lines, induced overvoltages, a-periodic voltage transient measurement, EMTP.
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


VOLTAGE TRANSIENTS IN A DISTRIBUTION NETWORK CORRELATED WITH EVENTS IDENTIFIED BY A LIGHTNING LOCATION SYSTEM


Description:
Monitoring units for the measurement of high frequency voltage transients have been in operation at three different busses of an Italian medium voltage (MV) distribution feeder, mainly composed by ove... see more

Tag(s): Lightning, distribution network, LIOV, EMTP
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


Lightning-Induced Overvoltages Transferred Through Distribution Power Transformers


Description:
This paper deals with the calculation of lightning induced overvoltages on medium-voltage (MV) and low-voltage (LV) distribution networks taking into account the presence of MV–LV distribution trans... see more

Tag(s): Lightning, distribution transformers, overvolatges
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


Transient recovery voltages in vacuum circuit breakers generated by the early-interruption of the inrush current of large motors


Description:
The switching of medium voltage electrical motors is typically realized by means of vacuum circuit breakers (VCBs) essentially in view of their elevated number of switching cycles. As known, switching... see more

Tag(s): Transient recovery voltages, vacuum circuit breakers, motor inrush currents, EMTP simulations
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


Interaction Between Grounding Systems and Nearby Lightning for the Calculation of Overvoltages in Overhead Distribution Lines


Description:
The aim of the paper is to analyze overvoltages in overhead distribution lines induced by nearby lightning return stroke currents taking into account also the conductive coupling between the lightning... see more

Tag(s): lightning induced overvoltages, grounding systems, overhead distribution lines, lightning protection.
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


Protection Systems Against Lightning-Originated Overvoltages in Resonant Grounded Power Distribution Systems


Description:
A joint research project between AES Sul, the Federal University of Itajubá and the University of Bologna aims at defining the required protections against lightning-originated overvoltages in a reso... see more

Tag(s): Lightning protection, power distribution networks, induced overvoltages.
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


Assessment of the Lightning Performance of Compact Overhead Distribution Lines


Description:
The assessment of the lightning performance of a compact configuration of MV overhead lines that is expected to be adopted in the near future by an electricity distribution company in a Brazilian regi... see more

Tag(s): Lightning protection, Overhead distribution lines, Induced overvoltages, Electromagnetic transients.
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


Continuous-Wavelet Transform for Fault Location in Distribution Power Networks: Definition of Mother Wavelets Inferred From Fault Originated Transients


Description:
The paper presents a fault location procedure for distribution networks based on the wavelet analysis of the fault-generated traveling waves. In particular, the proposed procedure implements the conti... see more

Tag(s): Continuous wavelet transform, distribution network, EMTP simulations, fault location, mother wavelet, power quality.
Author: n.sene
Type: Publication
Downloaded: 285 times
Date: 2015-04-01
Rating: * 0 vote(s)
0/10


A PROCEDURE FOR THE AUTOMATIC SCHEDULING OF DISTRIBUTED ENERGY RESOURCES IN MEDIUM VOLTAGE NETWORKS


Description:
The paper presents the main characteristics of a centralized two-stage scheduler designed for the integration in the Distribution Management System (DMS) under development in the framework of an Itali... see more

Tag(s): Distribution Management System, Smart Grid, automation
Author: admin2012
Type: Document
Downloaded: 130 times
Date: 2014-06-02
Rating: * 0 vote(s)
0/10


Co-simulation Platform for the Analysis of Communication-based


Description:
The paper presents an ICT and power co-simulation platform for the analysis of the volt/var control and relevant optimization in medium voltage distribution feeders, achieved by means of a system of d... see more

Tag(s): Co-simulation, Networked Control Systems, Power distribution feeders, Volt/var optimization
Author: AdminEMTP-RV
Type: Model
Downloaded: 191 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


Ferro_hyst_Zno


Description:
Simple ferroresonance case. In this case the switching of a part of the network comprised of a cable connected to a no-load transformer is carried out. A pole of the breaker fails to open and an impor... see more

Tag(s): Protection
Author: AdminEMTP-RV
Type:
Downloaded: 274 times
Date: 2012-06-18
Rating: * 1 vote(s)
10/10


Cross_Bonded_Cable


Description:
Insulation coordination - 225 kV cross bonded cable - protection of the sheath.
In the configuration a 225 kV cross-bonded cable is connected at both ends to an otherhead line. The sheath is prot... see more

Tag(s):
Author: AdminEMTP-RV
Type: Model
Downloaded: 237 times
Date: 2012-06-18
Rating: * 1 vote(s)
8/10


CB_arc_CM


Description:
This is an interesting case of the study of arc-circuit interaction in case of the interruption of a short-line fault.The arc is represented by a composite Cassie-Mayr model and the line is represente... see more

Tag(s): Example, Protection
Author: AdminEMTP-RV
Type: Document
Downloaded: 348 times
Date: 2012-06-18
Rating: * 1 vote(s)
8/10


A Tool for Steady-State and Dynamic Analysis of PV Generation in Low Voltage Grids


Description:
Authors:
Dennetière S., Mahseredjian J., Duvauchelle C., Tounsi B.
This paper describes a tool based on EMTP-RV that simulates the steady-state and the dynamic behavior of photovoltaic (PV)... see more

Tag(s):
Author: AdminEMTP-RV
Type: Document
Downloaded: 564 times
Date: 2012-06-18
Rating: * 2 vote(s)
4/10


Look what happens without EMTP-RV


Description:
This is a nice video about the switching of a shunt reactor (most probably 500 kV) with a Circuit-Switcher.
>A circuit-switcher is a SF6 load-break swith with no fault current breaking capabil... see more

Tag(s):
Author: AdminEMTP-RV
Type:
Downloaded: 165 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


Motor_Protection


Description:
The following circuit presents a protection scheme for an induction motor due to voltage dips.

The voltage dip generator is presented in a masked subcircuit where it is possible to control ... see more

Tag(s): Motor, Protection
Author: AdminEMTP-RV
Type:
Downloaded: 140 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


PM_subcircuit


Description:
Example of a user defined model. In this case a line-start permanent magnet synchronous machine is connected to a simple power network. This machine, working as a generator, has been modeled by contro... see more

Tag(s): Example, Motor
Author: AdminEMTP-RV
Type: Document
Downloaded: 270 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


Presentation of an approach based on EMTP for the calculation of lightning induced overvoltages


Description:
Authors:
A. Xémard, P. Baraton, B. Bressac, N. Qako, J. Mahseredjian, G. Simard, J. Ribeiro, R. Tarafi, A. Zeddam.

Abstract:
LIPS (Lightning Impact on Power Systems) is a toolbo... see more

Tag(s):
Author: gerinlajoie.luc
Type: Model
Downloaded: 147 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


Sequence controlled voltage and current sources.


Description:
Three sequences voltage and current sources are proposed, the positive, negative and zero sequences. The magnitude and the angle are controllable; the carrier is given by the user.

Theses p... see more

Tag(s): Source
Author: AdminEMTP-RV
Type: Model
Downloaded: 81 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


Sic_Test


Description:
Example of a 276 kV Sic arrester.

This is a contribution of Bob Wilson from WAPA in the USA.
This file can only be read by V 2.0.1 or higher.

This design introduces a test c... see more

Tag(s):
Author: AdminEMTP-RV
Type: Model
Downloaded: 140 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


SW_tContr


Description:
This design introduces a contolled-closing switch very appropriate for asymetrical current or transient voltage studies during shunt-reactor/capacitor bank switching or fault creation.

This... see more

Tag(s): Protection
Author: AdminEMTP-RV
Type: Model
Downloaded: 123 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


TCR1


Description:
Example of single phase Thyristor Controlled reactor using TACS control devices. This circuit reproduces the TCR case presented in the EMTP Workbook volume 4 chapter 6.

Example of single ph... see more

Tag(s): Power Electronics
Author: AdminEMTP-RV
Type: Model
Downloaded: 564 times
Date: 2012-06-18
Rating: * 0 vote(s)
0/10


V_Swing


Description:
This design introduces a three-phase User-defined Swing Voltage Source.
This design should be used with version 1.0.2.

The Swing Voltage Source is used to study the behavior of synchro... see more

Tag(s): Source
Author: AdminEMTP-RV
Type: Model
Downloaded: 124 times
Date: 2012-06-18
Rating: * 1 vote(s)
7/10


V_unb_I2motor


Description:
This design introduces an unbalance three-phase voltage source defined by specified symetrical components. The source is initialized and an angle is defined.
This design should be used with versi... see more

Tag(s): Example