Which Deepness Class Is Suited for Modeling Power Electronics?: A Guide for Choosing the Right Model for Grid-Integration Studies

Carne, Giovanni De; Langwasser, Marius; Ndreko, Mario; Bachmann, Ralf; Doncker, Rik W. De; Damien, Robert; Mortimer, Benedict J.; Neufeld, Alexander; Rojas, Freiber; Liserre, Marco

doi:10.1109/mie.2019.2909799

Cited by 32 publications

(21 citation statements)

References 36 publications

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“…For an analytical evaluation of the HVDC PFR-VDL performance, the simplified two area system scheme [28] has been used, as shown in Fig.5. This model accurately represents the system with the minimum required level of details for frequency control studies [29]. The system scheme consist of the equivalent machines of the two areas and it is built to adapt the two two-area connection cases under investigation: by means of a HVDC line (black), or embedded HVDC-HVAC lines (red) interconnecting the two areas instead of 2 HVAC lines.…”

Section: Analytical Resultsmentioning

confidence: 99%

“…The HVDC power control is assumed ideal in this case, which results in simplified representation of the HVDC system only respecting its linear frequency power droop gain d p . The internal dynamics of the control of voltage dependent loads are not within the bandwidth of frequency control studies [29]. Hence, a linear relationship between frequency and load voltage can be assumed, which is added by the control gain of voltage dependent loads (VDL) d v and load voltage sensitivity K p additionally in this scheme.…”

Section: Analytical Resultsmentioning

confidence: 99%

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Primary Frequency Regulation Using HVDC Terminals Controlling Voltage Dependent Loads

Langwasser

Carne

Liserre

et al. 2021

IEEE Trans. Power Delivery

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HVDC can provide frequency regulation during disturbances (e.g., faults) by controlling the power flow between two remote AC areas. While this action reduces the power deviation in the area affected by the disturbance, it causes a power imbalance in the other healthy AC area, leading to a frequency variation and endangering the system stability. In this work, a HVDC primary frequency regulation controlling voltage-dependent loads (PFR-VDL) is proposed, where the HVDC terminal in the healthy area influences the grid voltage amplitude to shape (decreasing or increasing) the load consumption in order to cope with the power variation required by the fault-affected area. The PFR-VDL extracts the needed energy for the frequency support, not from the generators (with following frequency deviation) but from the voltage-dependent loads in the healthy area. This work analyzes the PFR-VDL performance, generalizing it with two possible HVDC connection cases: Asynchronous connection with single HVDC line, and embedded HVDC forming a parallel, hybrid connection with HVAC. The PFR-VDL application benefits and limitations are evaluated analytically and verified by means of PSCAD EMTDC simulations, and finally validated with a large interconnected IEEE 39 bus system.

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Section: Analytical Resultsmentioning

confidence: 99%

Section: Analytical Resultsmentioning

confidence: 99%

Primary Frequency Regulation Using HVDC Terminals Controlling Voltage Dependent Loads

Langwasser

Carne

Liserre

et al. 2021

IEEE Trans. Power Delivery

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“…The synchronization [53,54], and external control layers [55] may bring negative damping in the low frequency range, while the inner control layers impact on the stability in the high frequency range. The accurate analysis of resonance instabilities requires special attention to the modelling of power electronic converters and adapting it depending on the observed phenomenon [56].…”

Section: F Interaction Among Cig and Power Systems Stabilitymentioning

confidence: 99%

Fundamentals of power systems modelling in the presence of converter-interfaced generation

Paolone

Gaunt

Guillaud

et al. 2020

Electric Power Systems Research

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154

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This survey paper discusses the fundamentals of power systems modelling in the presence of large amounts of converter-interfaced generation (CIG). By referring to real-life events characterised by anomalous dynamics associated to the presence of CIG, the concepts of narrow versus broad band signals are first recalled along with the limitation of the meaning of apparent power, power factor and reactive power. In this regard, the adequacy of the phasor representation of voltages and currents waveforms is thoroughly discussed. Then, with respect to the central subject of control of power converters, a revised definition of grid-following and grid-forming converters is provided along with a thorough discussion of their associated controls and a comprehensive classification for both classes of converters. Several applications inspired by actual case studies are included in the paper in order to provide realistic application examples.

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“…These grid code requirements (GCRs) demand renewable energy source (RES) based power plants to support the network actively during grid faults, injecting positive and negative sequence active and reactive currents during grid faults [6]. These requirements are reflected in the low‐voltage ride through (LVRT) requirements issued by the TSOs all over the world [7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced performance controller for high power wind converters connected to weak grids

Shahparasti

Catalán

Garcia

et al. 2020

IET Renewable Power Generation

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Which Deepness Class Is Suited for Modeling Power Electronics?: A Guide for Choosing the Right Model for Grid-Integration Studies

Cited by 32 publications

References 36 publications

Primary Frequency Regulation Using HVDC Terminals Controlling Voltage Dependent Loads

Primary Frequency Regulation Using HVDC Terminals Controlling Voltage Dependent Loads

Fundamentals of power systems modelling in the presence of converter-interfaced generation

Enhanced performance controller for high power wind converters connected to weak grids

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