References of "Chaspierre, Gilles"
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See detailDynamic equivalent of an active distribution network taking into account model uncertainties
Chaspierre, Gilles ULiege; Denis, Guillaume; Panciatici, Patrick et al

in Proc. IEEE PES PowerTech conference (in press)

A reduced-order model of a distribution network hosting inverter-based generators is derived. This model aims to be used in dynamic simulations of large disturbances in the transmission system ... [more ▼]

A reduced-order model of a distribution network hosting inverter-based generators is derived. This model aims to be used in dynamic simulations of large disturbances in the transmission system. Uncertainties affecting the parameters of the component models are addressed using Monte-Carlo simulations. For a given disturbance, the average and the standard deviation of the randomized system evolutions are extracted. The dynamic equivalent is of the “grey-box” type. Its parameters are adjusted to match as closely as possible the average system response. This involves minimizing a weighted least-square objective function, in which the weights reflect the dispersion of the randomized Monte-Carlo responses. Multiple disturbances are considered to avoid over-fitting, and a recursive procedure is used to select a small subset of them from which the parameters of the ADN equivalent are identified. Simulations results are reported on the CIGRE MV distribution network benchmark. They show a good accuracy of the equivalent. [less ▲]

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See detailIdentification of a Dynamic Equivalent of an Active Distribution Network from Monte-Carlo Simulations
Chaspierre, Gilles ULiege; Denis, Guillaume; Panciatici, Patrick et al

in Proc. 8th Solar Integration Workshop (in press)

This paper deals with the derivation of a dynamic equivalent of a distribution system for use in (phasor-mode) dynamic simulations of large disturbances in the transmission system. The original, unreduced ... [more ▼]

This paper deals with the derivation of a dynamic equivalent of a distribution system for use in (phasor-mode) dynamic simulations of large disturbances in the transmission system. The original, unreduced system hosts inverter-based generators such as photovoltaic units or full-converter wind turbines. The individual behaviour of inverter-based generators and loads is assumed to be reasonably well captured by a parameterized model, but the values of its parameters are uncertain. Monte-Carlo simulations involving random variations of those parameters are performed, yielding a set of dynamic responses to a given large disturbance. The equivalent is of the ”grey-box” type and its parameters are tuned in the least-square sense to have its response falling in time-varying confidence intervals obtained from the 5-th and the 95-th percentiles of the distribution of dynamic responses. Simulations results are reported on a variant of the CIGRE Medium-Voltage Distribution Network Benchmark. [less ▲]

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See detailDynamic Equivalent of a Distribution Grid Hosting Dispersed Photovoltaic Units
Chaspierre, Gilles ULiege; Panciatici, Patrick; Van Cutsem, Thierry ULiege

in IREP’2017 Symposium: X Bulk Power Systems Dynamics and Control Symposium (in press)

This paper deals with the derivation of a simplified model of a distribution network hosting dispersed photovoltaic units. The model is aimed at short-term dynamic simulations of a transmission grid in ... [more ▼]

This paper deals with the derivation of a simplified model of a distribution network hosting dispersed photovoltaic units. The model is aimed at short-term dynamic simulations of a transmission grid in response to large disturbances. In a first step, a generic dynamic model of a photovoltaic unit is proposed, focusing on its interactions with the grid, in particular the controls triggered by voltage disturbances. The model takes into account various present and near-future grid codes. In a second step, a dynamic equivalent is derived accounting for the distribution network, the dispersed photovoltaic units, as well as static and dynamic (motor) loads. This equivalent is of the “grey-box” type and its parameters are tuned in the least-square sense to match the dynamic response of the original, unreduced system. Simulation results are reported on a detailed 913-bus distribution system subject to faults at transmission level. [less ▲]

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See detailIdentification of a Reduced-Order Model of an Active Distribution Grid Using Recursive Training
Chaspierre, Gilles ULiege; Van Cutsem, Thierry ULiege

in Chaspierre, Gilles; Van Cutsem, Thierry (Eds.) Proc. of the IEEE Benelux Young Researchers Symposium (2018, May)

THIS PAPER WAS PRESENTED BY GILLES CHASPIERRE AT A LOCAL SYMPOSIUM WHERE PHD STUDENTS HAVE THE OPPORTUNITY TO PRESENT THEIR RESEARCH WORK. AN UPDATED AND MORE COMPREHENSIVE VERSION HAS BEEN SUBMITTED FOR ... [more ▼]

THIS PAPER WAS PRESENTED BY GILLES CHASPIERRE AT A LOCAL SYMPOSIUM WHERE PHD STUDENTS HAVE THE OPPORTUNITY TO PRESENT THEIR RESEARCH WORK. AN UPDATED AND MORE COMPREHENSIVE VERSION HAS BEEN SUBMITTED FOR PRESENTATION AT THE IEEE PES 2019 POWERTECH CONFERENCE, MILAN. [less ▲]

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See detailModelling Active Distribution Networks under Uncertainty: Extracting Parameter Sets from Randomized Dynamic Responses
Chaspierre, Gilles ULiege; Panciatici, Patrick; Van Cutsem, Thierry ULiege

in Proceedings of the 20th Power Systems Computation Conference (2018)

This paper deals with the dynamic modelling of distribution systems hosting a large amount of Inverter-Based Generators (IBGs), more precisely their response to large disturbances in the transmission ... [more ▼]

This paper deals with the dynamic modelling of distribution systems hosting a large amount of Inverter-Based Generators (IBGs), more precisely their response to large disturbances in the transmission system. It is assumed that the individual behaviour of IBGs and loads is reasonably well captured by a parameterized model, but the values of its parameters are uncertain. Monte-Carlo simulations involving random variations of those parameters are performed. The dynamic response closest to the average is extracted as being representative. A simple procedure is described to stop the simulations as soon as sufficient information is available. Detailed simulation results are provided, relative to a distribution grid with 75 loads and 75 IBGs. The latter are represented by a generic model that reproduces the main requirements of typical grid codes. [less ▲]

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See detailAggregated Dynamic Equivalent of a Distribution System hosting Inverter-based Generators
Chaspierre, Gilles ULiege; Panciatici, Patrick; Van Cutsem, Thierry ULiege

in Proceedings of the 20th Power Systems Computation Conference (2018)

An equivalent, i.e. a reduced-order model, of active distribution networks is derived, for use in (phasor-mode) dynamic simulations of large-disturbances. In the unreduced model, the network hosts a large ... [more ▼]

An equivalent, i.e. a reduced-order model, of active distribution networks is derived, for use in (phasor-mode) dynamic simulations of large-disturbances. In the unreduced model, the network hosts a large number of inverter-based generators, responding to the disturbances in accordance with recent or near-future grid codes. The aggregated equivalent is of the “grey-box” type and its parameters are tuned in the least-square sense to match the dynamic responses of the unreduced system to several training disturbances. Changes in operating point are easily reflected when initializing the reduced model. Simulations are reported on a detailed 75-bus distribution system. The accuracy of the equivalent has been checked with respect to untrained disturbances and changes of the operating point. [less ▲]

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See detailDynamic Modelling of Photovoltaic Units in Response to Voltage Disturbances
Chaspierre, Gilles ULiege

in Revue E Tijdschrift (2017), 1-2-3-4-2016

The objective of this work was to build a simplified mathematical model of distributed photovoltaic (PV) units representing small-scale systems accounting for residential installations. These ... [more ▼]

The objective of this work was to build a simplified mathematical model of distributed photovoltaic (PV) units representing small-scale systems accounting for residential installations. These installations are generally connected to the Low Voltage (LV) network but can be aggregated to a Medium Voltage (MV) bus through equivalent impedance accounting for the distribution feeder and the transformer. The model represents reliably the dynamic behavior of small-scale PV units in response to grid voltage disturbances according to new connection requirements. It focuses on grid interactions through the electronic interface and does not propose a detailed mathematical representation of each physical component of the system. Therefore, the mathematical model is based on recent/near future grid requirements and ancillary services that should be provided by PV units to support the grid during a fault. The proceedings of this work can be divided in three parts. First, one third of the time has consisted in the review of the literature and grid codes to make out a list of PV model specifications. The most important specifications are the Low Voltage Ride- Through (LVRT) capability, the voltage support through reactive current injection and the active-reactive strategy during a fault. During the second third of the time, the dynamic model of PV units has been built based on existing elaborated models that have been improved in order to implement the PV model specifications. Finally, the remaining time has been devoted to dynamic simulations using a 75-bus MV test network where PV units have been attached to each node next to static and dynamic loads. The external transmission system has been represented by its Thevenin equivalent defined by its short circuit power. First, simulations have been made in order to validate the model. Then different scenarios interesting from a System Operator point of view have been investigated in order to see how the units react in particular fault/low voltage situations. The figure 1 shows the fast increase in PV units installed capacity around the world that clearly illustrates the needs in the introduction of new PV units grid requirements and in new models implementing these requirements. [less ▲]

Detailed reference viewed: 23 (5 ULiège)