References of "Lilien, Jean-Louis"
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See detailMicrosystem array for live high voltage lines monitoring
Lilien, Jean-Louis ULg; Guerard, Suzanne ULg; Godard, Bertrand ULg et al

(2006, August)

The use of microsystems at very high electromagnetic fields on power lines to monitor movements.

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See detailPower lines real time monitoring
Lilien, Jean-Louis ULg; Guerard, Suzanne ULg; Godard, Bertrand ULg et al

in Zamrik, Sam Y. (Ed.) Proceedings of the 11th ICPVT conference (2006, July)

How to access real time data of ampacity of power lines.

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See detailElectrification Rurale. Vers une technique innovatrice pour l'Afrique.
Lilien, Jean-Louis ULg; omboua, Alphonse

in Revue d'electricité et d'électronique industrielle (2006), N°1-2006

In many developing countries , there are a lot of high voltage lines which cross many regions to supply electricity to the main towns or connect to networks the distanced electric substations . These ... [more ▼]

In many developing countries , there are a lot of high voltage lines which cross many regions to supply electricity to the main towns or connect to networks the distanced electric substations . These lines, used for supplying electricity to big towns, cross a lot of villages whose people broadly poor hope to be supplied with electricity without a suitable solution. However it seems very deplorable that the power conducted by these lines doesn’t profit to surrounding population. Unfortunately , for these villages , the use of classical substations is too expensive to the power distributors because of high cost of investment and production for these potential scattered consumers with the low demand of electricity. This paper presents the original solution settled in 2002 in one of the village located in Congo Brazzaville and continue to operate correctly in 2006. It is a new power transformer, based on the technique of SF6 measuring transformer, which is connected on one phase of the high voltage line 220kV and which produces the low voltage 230 V directly useful by the rural population. This prototype sample for the rural electrification has been designed to deliver a power of 50kVA. A cheap and robust system ! It requires a large popularization, mainly in sub saharian Africa that has got many such opportunities. Outside the role of bulk power transmission, the high voltage line is now also able to distribute a part of it. [less ▲]

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See detailAcoustic noise generated by air power reactor in open-air substation
Lilien, Jean-Louis ULg

in European Transactions on Electrical Power (2006), 16(3, May-JUN), 297-310

Air core reactor generates disturbing noise in its environment. This paper is evaluating the noise generated by air-core reactor both by analytical and numerical methods. Detailed analysis is done on a ... [more ▼]

Air core reactor generates disturbing noise in its environment. This paper is evaluating the noise generated by air-core reactor both by analytical and numerical methods. Detailed analysis is done on a test case to evaluate why some discrepancies may occur between actual results and simulated ones. Trends to limit noise are also evaluated. [less ▲]

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See detailOverhead power lines real time monitoring : a future trend ?
Lilien, Jean-Louis ULg; Destiné, Jacques ULg

in Revue d'Electricité et d'Electronique Industrielle (2005), 4

Overview of the needs which exist to monitor overhead lines in real time. Application to ampacity is detailed to determine the load available on a given line at a given time. After an overview of the ... [more ▼]

Overview of the needs which exist to monitor overhead lines in real time. Application to ampacity is detailed to determine the load available on a given line at a given time. After an overview of the existing sensors, a new device is proposed (Ampacimon) and first results are detailed on a 70 kV line. [less ▲]

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See detailOverhead power lines real time monitoring : a future trend ?
Lilien, Jean-Louis ULg

Conference given outside the academic context (2005)

general overview of ampacity problem in power lines

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See detailAn attempt to create power line anti-galloping device with hysteretic type energy dissipation
Vinogradov, Alexander; Platonova, Irina; Akuratov, Andrei et al

in Proceedings of the 6th International Conference on Cable Dynamics (2005, September)

A new concept of anti-galloping device (TDD) based on hysteretic type damper is detailed.

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See detailArray of microsystem for live monitoring of high voltage power lines
Renson, Luc ULg; Jamar, Claude ULg; Guérard, Suzanne ULg et al

in Proceedings of the 1st IOMAC (2005, April)

How to use microsystems placed on power lines environment.

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See detailA heat piloted residential 5 kW fuel cell
Lilien, Jean-Louis ULg; Maréchal, François; Lerson, Sébastien et al

(2004, August)

based on residential house demand (electrical, heating, domestic hot water), the optimisation of the use of a SOFC fuel cell of about 5 kWe is detailed to reduce CO2 emission at their minimum.

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See detailShort-circuit mechanical effects on outdoor HV substations with wide bundling.
Pitz, Volker; Köster, Hans-Joachim; Stein, Norbert et al

in Conférence Internationale des grands réseaux électriques à haute tension - CIGRE (2004, August)

This paper presents results of a research project investigating the mechanical effects of short-circuit currents in high-voltage substations with conductor bundles. The experimental part was performed on ... [more ▼]

This paper presents results of a research project investigating the mechanical effects of short-circuit currents in high-voltage substations with conductor bundles. The experimental part was performed on two set-ups, called "100 kV arrangement" and "400 kV arrangement". Those two set-ups differed in the height of the crossarm, the phase-to-phase distance and the conductor sag. Additional parameters which were varied in the course of the experiments included the level and duration of the short-circuit current, the type and number of the spacers used and the bundle spacing. Various forces in the flexible busbar and the supporting structure were recorded during the tests and the stiffness as well as the eigenfrequency of the portals used for supporting the conductors were determined. The test results were evaluated with respect to the maxima of the pinch force, the tensile force and the drop force. They are presented and compared with existing assumptions and calculation methods. The results of this project shall enable IEC standardization committees and CIGRE working groups to carry on with their intended studies and establish a comprehensive method of calculating the mechanical effects in substations with bundle conductors. [less ▲]

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See detailAssessment of the Electric and Magnetic field levels in the vicinity of the HV overhead power lines in Belgium.
Hoeffelman, Jean; Decat, Gilbert; Lilien, Jean-Louis ULg et al

in Conférence Internationale des Grands Réseaux Electriques à Haute Tension - CIGRE (2004, August)

Maximum exposure levels in the vicinity of HV power lines in Belgium.

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See detailLimiting windstorm effects on tower by the « low drag » cable
Lilien, Jean-Louis ULg; Snegovski, Dmitri; Capelle, Thierry et al

(2004, August)

Hurricane winds affect the flow around electrical conductor in a way that it may reach the critical (Drag crisis) and postcritical states. It is thus important to introduce the cable aerodynamic drag as ... [more ▼]

Hurricane winds affect the flow around electrical conductor in a way that it may reach the critical (Drag crisis) and postcritical states. It is thus important to introduce the cable aerodynamic drag as Reynolds-dependent when calculating the response of the power transmission line under hurricane. To represent the respective wind loading on cable, the turbulent, spatially non-uniform wind model is used. In order to assess the behaviour and cyclic fatigue loads under hurricane conditions of different transmission line conductors, the time response analyses were done. Results of comparative study of the smooth cable AERO-Z and classical multistrand cable, including the percentage of load reduction offered to supporting structure, are presented. [less ▲]

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See detailSystem optimization for residential SOFC 5 kW heat and electricity management
Lilien, Jean-Louis ULg; Lerson, Sébastien; Pochet, Nicolas

(2004, July)

A demonstration project will be presented using a 5 kW Solid Oxyde Fuel Cell for residential application in the region of Liège, Belgium. The current stage of the project is to evaluate the thermal ... [more ▼]

A demonstration project will be presented using a 5 kW Solid Oxyde Fuel Cell for residential application in the region of Liège, Belgium. The current stage of the project is to evaluate the thermal management of a single house with, at the present time, 45 MW.h (thermal 25 MW.h, electrical 20 MW.h) annual consumptions. The changes needed from a classical gas boiler heating of 20 kW to a 6 kW (thermal) plus 5 kW (electrical) system will be studied and detailed. Evaluation of CO2 reduction in the two systems will be presented considering the Belgium mix of electricity production. The heat and electricity local storage to cover peak demand in both energy demands will be discussed in relation with a grid-connected fuel cell. In particular the detailed analysis of this home demand will be analysed for the last three years. An original thermal circuit will be proposed, including its regulation. The experimental result of the behaviour of our proposal during 2003-2004 winter will be presented using a “virtual” SOFC (actually replaced by “equivalent” 6 kWth boiler) which is intended to be used in the same environment after this testing period. Constrains related to SOFC typical behaviour will be taken into account in our proposal for regulation. Depending on our development, it may be possible that up-to-date results may be given at the conference with a real system using a true SOFC 5 kW which would be in service after Septembre 2004. [less ▲]

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See detailWake-Induced Vibration in Power Transmission Line. Parametric study
Lilien, Jean-Louis ULg; Snegovski, Dmitri

in Flow Induced Vibration - FIV 2004 (2004, July)

The paper discusses some aspects of modeling the wake-induced vibrations of the bundle conductors in transmission lines. The wake coupling between subconductors is modeled with the modified Simpson’s ... [more ▼]

The paper discusses some aspects of modeling the wake-induced vibrations of the bundle conductors in transmission lines. The wake coupling between subconductors is modeled with the modified Simpson’s approach. In order to apply this model to the analysis of power transmission line (PTL), a modal representation of a span could be used. In present paper we study how application of Dynamic Reduction (Component Mode) technique may improve such analysis under finite-element approach. The present paper, to extent of authors’ knowledge, is the first where Component Mode method application is discussed to study the subspan oscillation. Finally, bundled conductors’ susceptibility to wake-induced vibrations is illustrated on an exemplary twin-bundle, three-subspan model. Effects of bundle parameters (initial subconductor spacing, frequency ratio, subconductor mass), and the means to account them when applying the component mode method are discussed. [less ▲]

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See detailManagement of Electric and Hybrid vehicles
Lilien, Jean-Louis ULg; Yuan, H.

(2003, November)

The battery management system (BMS) is an important feature for electric (EVs) and hybrid (HVs) vehicles. The BMS has close connections with the vehicle control and command and gives access to real time ... [more ▼]

The battery management system (BMS) is an important feature for electric (EVs) and hybrid (HVs) vehicles. The BMS has close connections with the vehicle control and command and gives access to real time power available and remaining autonomy. Such information is dramatic and comprises major inputs of the hybrid vehicle strategy on the road. The BMS is obviously related to battery modeling. Electrochemical modeling would be based on the qualification of the intrinsic chemical reactions and would help to define the parameters of the battery. Generally it is hopeless to use this model in such applications, due to all its complexities [less ▲]

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See detailHurricane Simulation on Power Transmission Line
Lilien, Jean-Louis ULg; Snegovski, Dmitri; Capelle, Thierry ULg

in Proceedings of the 5th International Conference on Cable Dynamics (2003, September)

The hurricane winds are characterized by high speeds, at which the « drag crisis » regime of flow around cable is achievable. That is why, in the calculation of the wind-induced movement of the overhead ... [more ▼]

The hurricane winds are characterized by high speeds, at which the « drag crisis » regime of flow around cable is achievable. That is why, in the calculation of the wind-induced movement of the overhead transmission line during hurricane, it is important to represent the cable aerodynamic drag as Reynolds-dependent. In order to assess the behaviour and fatigue resistance of the transmission line conductor under hurricane conditions, the Reynolds-dependent drag coefficient was introduced in the SAMCEF Mecano finite-element software. To represent the hurricane wind loading, the turbulent, spatially non-uniform wind model was used. Results of comparative study of the smooth cable AERO-Z and the classical multistrand cable, including the percentage of load reduction offered to supporting structure, are presented. [less ▲]

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See detailOne phase rural distribution installation with direct connection to HV trunk line
Lilien, Jean-Louis ULg; Monfils, Pierre-André; Omboua, Alphonse

in 17th International Conference on Electricity Distribution - CIRED (2003, May)

One original application of the distribution network development, based on existing HV network, is presented for the rural electrification of developing countries. Supply of a few kVA to remote site needs ... [more ▼]

One original application of the distribution network development, based on existing HV network, is presented for the rural electrification of developing countries. Supply of a few kVA to remote site needs specific installations. We have developed, installed and experimented one practical application from April 17th, 2002 in Makola (Congo-Brazzaville, 30 km far from Pointe Noire). We have investigated the case where a HV OHL exists in the vicinity of the village. Our application is a one-phase connection to a 220 kV line with a local demand estimated at 50 kVA (about 500 people) in a first step. We have adapted the existing technology of SF6 inductive voltage transformer in order to supply 50 kVA instead of a few VA. The paper will present the problems met during the design of this specific installation compared to classical substation, and the results of first months of use. [less ▲]

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See detailThe mechanical effects of short-circuit currents in open air substations (Part II)
Lilien, Jean-Louis ULg; Declercq, Guy; El adnani, Mustapha et al

Book published by CIGRE (2002)

This book is a companion book of teh CIGRE brochure N° 105 (1996) on the same subject. It evaluates short-circuit mechanical effects and corresponding design loads in substation. It includes both rigid ... [more ▼]

This book is a companion book of teh CIGRE brochure N° 105 (1996) on the same subject. It evaluates short-circuit mechanical effects and corresponding design loads in substation. It includes both rigid and flexible bus-bars, Ac and DC network. It is divided in two volumes, the second one is giving numerous data and tests results of short-circuit. The first volume is detailing methods (simplified, medium and advanced ) to solve these problems. [less ▲]

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See detailFull-scale tests of torsional damper and detuner (TDD) antigalloping device
Lilien, Jean-Louis ULg; Vinogradov, Alexander

in IEEE Transactions on Power Delivery (2002), 17(2), 638-643

A new antigalloping device for overhead lines with bundle conductors was introduced ten years ago, after laboratory tests and observations on actual 400-kV lines. A systematic fullscale test was performed ... [more ▼]

A new antigalloping device for overhead lines with bundle conductors was introduced ten years ago, after laboratory tests and observations on actual 400-kV lines. A systematic fullscale test was performed in Kazakhstan in order to better evaluate torsional damper and detuner (TDD) efficiency. This report details the test station and the results obtained over a several month period of testing and measurement. The tests were carried out thanks to the mutual efforts of the ESSP and the Kazakh Power Research Institute (KazNIIE) at the field tests stand located in Chokpar. [less ▲]

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See detailWind turbines turbulence effects on cable structures in their vicinity
Lilien, Jean-Louis ULg; keutgen, Renaud; raimarckers, Nicolas

in Proceedings of the ISCD 2001 (2001, May)

Actual wind turbines size can be as large as 80 meters diameter (1 MW and over). Behind the wind turbines, mean wind speed is sensibly reduced (approximately 50%) and turbulence severely increased. The ... [more ▼]

Actual wind turbines size can be as large as 80 meters diameter (1 MW and over). Behind the wind turbines, mean wind speed is sensibly reduced (approximately 50%) and turbulence severely increased. The spectral density power of disturbed wind can be assumed similar to classical wind but centred on the rotational speed of the motor. Due to classical speed and shape of wind turbine, corresponding key frequency for disturbed wind is close to one Hz. Any structure in the vicinity of wind turbine can be disturbed by the new wind spectrum created by the turbine, thus existing most of the time for wind speed up to 25 m/s. Cable structure, f.e. overhead lines, have clearly 1 Hz in their first modal shapes. This make them very sensible to buffeting due to the disturbed wind induced by the turbine. Due to continuous excitation, most of the year, fatigue may occur near clamping point and extra damping may be required as well as minimum distance from the wind turbine may be recommended. The anchoring tower (whose first eigenfrequency is generally close to 1 Hz for high voltage lines) will also be affected. This paper will present some simulations of overhead lines disturbances induced by wind turbine in their vicinity. The power spectral density of wind behind the turbine will be deduced from classical spectra of Davenport, but with adaptation due to the rotation of the turbine. Effects on cable will be shown and tentative recommendations of damping as well as clearances from the turbine will be suggested. [less ▲]

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