A5066602583- Particle accelerators and beam dynamics
- HVDC Systems and Fault Protection
- Particle Accelerators and Free-Electron Lasers
- Power System Optimization and Stability
- Wind Turbine Control Systems
- Power System Reliability and Maintenance
- Magnetic confinement fusion research
- Microgrid Control and Optimization
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Radiation Therapy and Dosimetry
- Optimal Power Flow Distribution
- Particle physics theoretical and experimental studies
- Geophysical and Geoelectrical Methods
- High-Voltage Power Transmission Systems
- Islanding Detection in Power Systems
- Real-time simulation and control systems
- Gyrotron and Vacuum Electronics Research
- Power Systems Fault Detection
- Astronomical Observations and Instrumentation
- Advanced Machining and Optimization Techniques
- Integrated Energy Systems Optimization
- Radiation Detection and Scintillator Technologies
- Photocathodes and Microchannel Plates
Laboratoire de Physique Subatomique et de Cosmologie
2000-2019
Institut National de Physique Nucléaire et de Physique des Particules
1991-2016
Centre National de la Recherche Scientifique
2002-2016
Université Grenoble Alpes
2016
Pacific Northwest National Laboratory
2016
Pinnacle Clinical Research
2008
Université Joseph Fourier
1991
More than 9 GW of wind capacity has been connected to the Electric Reliability Council Texas (ERCOT) grid. In order accommodate installation future generation, Competitive Renewable Energy Zone (CREZ) transmission expansion project planned. The CREZ includes over two thousand miles new 345kV lines and is expected be completed by 2014. Planning studies have conducted ensure that generation can reliably delivered ERCOT grid through facilities. Voltage oscillations temporary overvoltage were...
The performance of various components in a power system, from voltage stability perspective, is highly dependent on the system strength. Voltage issues can be caused by integrating large amount wind generation into weak grid. Short circuit ratio (SCR) often used as an index SCR provides plants reference to properly tune controller settings and coordinate with neighboring plants. commonly calculation method does not consider interactions between plants, therefore gives overly-optimistic...
We observe a deuteron beam polarization lifetime near 1000 s in the horizontal plane of magnetic storage ring (COSY). This long spin coherence time is maintained through combination bunching, electron cooling, sextupole field corrections, and suppression collective effects current limits. record required for search an intrinsic electric dipole moment on at statistical sensitivity level approaching 10^{-29} e cm.
Voltage instability caused by integrating large-scale wind generation into a weak system is well-known challenge. The ERCOT 2012 Long Term System Assessment report indicated that voltage stability limit will constrain power delivery to the rest of if northwestern-most portion Panhandle CREZ becomes over-subscribed. To identify upgrades necessary accommodate future generation, transmission planning performed study. In this study, ability several compensation devices improve was investigated,...
Wind Power at Electric Reliability Council of Texas, Inc. (ERCOT) has growth to over 9 GW capacity installed and it is expected that an additional 7 10 can be added in the next 2 4 years. This high penetration wind energy comes with new challenges potential operational practices continuously operate reliably grid. Under restructured market, old conventional generation being replaced by generation, mostly power, as a result, dynamic reactive capability, inertia response frequency voltage...
This paper presents guidelines for estimating short- circuit contribution from wind power plants to the transmission network. Only squirrel-cage induction generator based turbines have been considered. A commercial software package has used model plant in detail. Transient analysis is performed explore nature of short-circuit current. AC symmetrical currents are calculated and through a network reduction technique obtain equivalent positive zero sequence impedances plant. Case studies on...
The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities could approach 10$^{-29}$ e$\cdot$cm. challenge will be reduce systematic errors similar levels. adjusted preserve polarisation, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarisation from...
Generators connecting to a series compensated transmission system can be exposed subsynchronous resonance (SSR) and require comprehensive vulnerability assessment. This study presents an SSR assessment framework tools more efficiently assess all types of generation in large with multiple generators meshed capacitors. The developed covers torsional interaction, torque amplification, induction generator effect/control interaction includes three stages: topology screening, frequency scan,...
The growth of wind energy has mushroomed over the past decade. Over next twenty years, there will be more significant in with expectation 20% grid penetration by 2030. To accommodate this amount power into our grid, infrastructure transmission must improved. In high scenario, ability plants to stay connected during disturbances is important avoid a cascading effect due lack generation. So-called voltage ride-through capability become key criterion for integration. This paper analyzes fault...
This report details the present status of Accelerator design for SuperB Project. It is one four separate progress reports that, taken collectively, describe made on Project since publication Conceptual Design Report in 2007 and Proceedings Workshop VI Valencia 2008.
This paper shows how generic protection relay models available in planning tools can be augmented with settings that are based on NERC standards or best engineering practice. Selected Siemens PSS <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> E have been used dynamic simulations the proposed approach. Undervoltage, overvoltage, underfrequency, and overfrequency relays modeled for each generating unit. Distance-relay was transmission...
This paper presents a novel voltage-profile-based approach to develop collection system aggregated models for various WGR facilities accurately represent their detailed counterparts from steady state and dynamic voltage response standpoint. A customised automated module developed by the authors is utilised collector representing aspects of facility. Short-circuit analysis at point common coupling obtain fault-voltage profile each turbine terminal within The resulting in conjunction with...
This paper presents a comprehensive two-step topology and frequency scan tool (TFST) developed by ERCOT to assess the potential subsynchronous resonance (SSR) vulnerability associated with series compensations in meshed transmission networks various generation resources, including synchronous generators inverter technology based generators. In first step, applies max-flow min-cut theorem on network identify critical contingency set (N-x as number of circuits) corresponding radial connection...
Voltage Stability Analysis has become more important as a result of insufficient reactive resources in bulk transmission systems. Usually the objective is to identify weak regions terms power deficiency and determine critical contingencies voltage stability margins for various transfers within regions. This paper presents practical method perform Analysis. A Python tool developed facilitate contingency screening PV analysis described. also addresses issues like criteria, cumulative errors...
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be reduce systematic errors similar levels. adjusted preserve polarization, initially parallel velocity, times in excess of 15 minutes. Large radial fields, acting through EDM, rotate polarization ($\vec...
Utility system operators and engineers now want a better understanding of the impacts large wind farms on grid stability before are interconnected to grid. Utilities need farm electrical models methods analysis that helps them analyze potential problems stability. Without necessary tools knowledge behavior power plants, utilities reluctant integrate more into The dynamic used in this paper were developed by Power Technologies Inc. (PTI), under subcontract from ERCOT. A three-phase fault...
Wind Power is well on its way to being a major contributor the energy pool in bulk power interconnections all over world. With most of these and member organizations setting ambitious goals for expansion renewable generation wind particular their portfolios, importance proper modeling representation dynamic response parks both Planning Operations horizons cannot be stressed enough. This paper provides an overview experience at ERCOT performing associated transmission system studies. Over...
This paper presents a dynamic model review platform developed by ERCOT to evaluate the performance of associated with various generation types. The platform, based on single machine - infinity generator test system, can be used examine voltage and frequency responses for generator's capability testing meet grid code requirements, such as automatic regulation, high/low ride through, or compare recorded measurement. In addition, it assess model's response under short circuit ratio (SCR) after...