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29 Results for the search " AC":

Author: h.gras
Type: Example
Downloaded: 31 times
Date: 2021-07-23
Rating:
* 0 vote(s)


AC and DC components meter


Description:
This example contains a device which calculates the DC and AC components.
- The DC component is available in the DC control scope with half
a cycle delay versus the simulation time
- ... see more

Tag(s): DC, AC, exponential, meters, zero-crossing, asymmetry, fault
Author: Mihajlo
Type: Model
Downloaded: 64 times
Date: 2020-09-04
Rating:
* 1 vote(s)


Active Harmonic Filter


Description:
The shunt filter injects the current that is defined as the error between the (non-linear) load current and the fundamental harmonic. The filter uses a 3-level inverter and the 2-level hysteresis curr... see more

Tag(s): filter, AHF, active filter
Author: h.gras
Type: Model
Downloaded: 295 times
Date: 2018-06-08
Rating:
* 1 vote(s)


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: 101 times
Date: 2017-11-03
Rating:
* 0 vote(s)


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: 246 times
Date: 2017-11-03
Rating:
* 0 vote(s)


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: 217 times
Date: 2017-08-15
Rating:
* 1 vote(s)


Fault on a line


Description:
This model is a faulty line. The distance of the fault from the origin is a parameter. CP or PI models are used on each side of the fault according to the time step. If the time step is small enough t... see more

Tag(s): fault, line, CP, PI
Author: h.gras
Type: Example
Downloaded: 196 times
Date: 2017-02-03
Rating:
* 1 vote(s)


Tutorial on exported mask (Demonstrated with an exciter)


Description:
In this example, a device is placed in a subcircuit. The goal is to be able to modify the parameters of this device from the parent mask.
However, this device is a masked subcircuit and therefore... see more

Tag(s): exported, mask, exciter, governor, subcircuit, subnetwork, script, method
Author: h.gras
Type: Model
Downloaded: 628 times
Date: 2016-02-26
Rating:
* 5 vote(s)


Breaker for TRV


Description:
Breaker for TRV. It draws the inherent TRV envelop according to the standard IEC 62271-100. It also contains a library of breaker stray capacitances and can simulate the prestrikes, restrikes and reig... see more

Tag(s): TRV breaker, prestrike, restrike, reignition, recovery
Author: n.sene
Type: Publication
Downloaded: 624 times
Date: 2015-04-02
Rating:
* 1 vote(s)


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: 624 times
Date: 2015-04-02
Rating:
* 2 vote(s)


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: 624 times
Date: 2015-04-02
Rating:
* 0 vote(s)


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: 624 times
Date: 2015-04-02
Rating:
* 0 vote(s)


Power system islands, autonomous microgrids and relevant instrumentation


Description:
Unplanned power system islanding is usually seen as a major risky operating condition and specific countermeasures are applied in order to avoid it. However the capability of voluntary disconnection f... see more

Tag(s): Power systems islanding, microgrids, measurements.
Author: n.sene
Type: Publication
Downloaded: 624 times
Date: 2015-04-02
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 635 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 1 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 2 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: 633 times
Date: 2015-04-01
Rating:
* 0 vote(s)


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: admin2012
Type: Document
Downloaded: 167 times
Date: 2014-06-02
Rating:
* 0 vote(s)


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: e.rutovic
Type: Library
Downloaded: 342 times
Date: 2013-02-26
Rating:
* 3 vote(s)


Control Devices of TACS


Description:
An EMTP-RV TACS (Transient Analysis Control Systems Library) containing :
- TACS 50 : Frequency meter
- TACS 51 : Relay
- TACS 52 : Level-Switch
- TACS 53 : Delay
- TACS 54 :... see more

Tag(s): TACS
Author: gerinlajoie.luc
Type: Library
Downloaded: 446 times
Date: 2012-11-23
Rating:
* 2 vote(s)


A collection of PowerRelay devices


Description:
A collection of PowerRelay devices
Distance relay 21,
Synchronizing or synchronism-check device 25,
Instantaneous overcurrent 50 + Ac time overcurrent relay 51,
Frequency relay (ov... see more

Tag(s): Protection
Author: AdminEMTP-RV
Type: Document
Downloaded: 452 times
Date: 2012-06-18
Rating:
* 1 vote(s)


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: 368 times
Date: 2012-06-18
Rating:
* 0 vote(s)


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: AdminEMTP-RV
Type: Model
Downloaded: 160 times
Date: 2012-06-18
Rating:
* 0 vote(s)


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