Exchange Platform

Author: h.gras
Type: Library
Downloaded: 1350 times
Date: 2016-03-16

Micro-Grid library

Description:
Convenient library to study Micro-grid. Contain:
- a 3-phase inverted with dq0 control (PQ, PV, VF, droop)
- a battery model (Ideal, i-Ion, Lead-Acid, NiMH, NiCD)
- a PV park
- Win... see mored parks
- low pass filter
- on-off delays
- PI controller

If anything, please contact me: Henry - h.gras@powersys-solutions.com

Tag(s): Micro, grid, smart, inverter, dq0, battery, BMS, VSC, filter, delay, trigger, Wind, PV, photovoltaic, park, power, electronics

Author: n.sene
Type: Publication
Date: 2015-10-22

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 and immediately upon its inception. In this paper prospects of application of fault current limiters in industrial power systems will be considered. Industrial power systems (distribution networks) are widespread and include a number of various electrical appliances. The power systems development (addition of new power plants, interconnections, etc.) may lead to more intense short circuit currents at the fault location. Furthermore, industrial systems may possess on-site generation which can increase fault current levels as well. All these factors might require appropriate upgrades of industrial system electrical equipment (especially switchgear) or special operating procedures (for instance avoiding parallel operation). Another alternative is the installation of fault current limiters. In this light, a series of simulations were carried out in order to observe the impact of fault current limiters on short circuit currents in an industrial power system using the EMTP-RV software program.

Keywords: saturable core fault current limiter (FCL), industrial power system, induction machine, EMTP; fault current analysis, medium voltage

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: 668 times
Date: 2015-06-16

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 moreFD lines
- Thevenin equivalent of a network

Tag(s): TRV, Transient recovery voltage, short-line fault, terminal fault, substation, 62271, 37.011, lines, switching, thevenin

Author: h.gras
Type: Example
Downloaded: 782 times
Date: 2015-06-16

Content of the webinar studies from A to Z on lightning strokes

Description:
Designs built or presented during the webinar of the series Studies from A to Z on Lightning stroke analysis.
Models built:
- Metal Oxide surge arrester (IEEE working group 3.4.11)
- To... see morewer model for fast-front transients.
- Footing resistance of towers (with ionization effect)
- air-gap leader (Area Criterion Model and equal area integration (Cigre))
- FD lines
- Substation equipment
- Parametric studies
- Corona

Tag(s): Lightning, stroke, fast-front transient, tower, arrester, cigre, line, substation, parametric, corona, air-gap, leader

Author: n.sene
Type: Publication
Date: 2015-04-02

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 generators, reactive power compensators and transformers equipped with on-load tap changers). The short-term scheduling procedure adopted in the paper is composed by two stages: a day-ahead scheduler for the optimization of distributed resources production during the following day, an intra-day scheduler that every 15 minutes adjusts the scheduling in order to take into account the operation requirements and constraints of the distribution network. The intra-day scheduler solves a non-linear multi-objective optimization problem by iteratively applying a mixed-integer linear programming (MILP) algorithm. The linearization of the optimization function and the constraints is achieved by the use of sensitivity coefficients obtained from the results of a three phase power flow calculation. The paper shows the application of the proposed approach to a medium-voltage 120 buses network with 10 dispatchable generators and 2 transformers equipped with on-load tap changers.

Authors: A. Borghetti, M. Bosetti, S. Grillo, M. Paolone, F. Silvestro

IEEE Bucharest Power Tech Conference, June 28th - July 2nd, Bucharest, Romania

Tag(s): Distributed generation, operation of distribution networks, MILP.