Converter Model for Representing Converter Interfaced Generation in Large Scale Grid Simulations

Ramasubramanian, Deepak; Yu, Ziwei; Ayyanar, Raja; Vittal, Vijay; Undrill, John

doi:10.1109/tpwrs.2016.2551223

Cited by 71 publications

(43 citation statements)

References 23 publications

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“…However, those PV models should not be used for power system dynamic studies in the weakly connected grid. When this type of dynamic study is required, the voltage source model, instead of the current source model, needs to be used [46].…”

Section: Discussionmentioning

confidence: 99%

Root-Mean Square Model of Three-Phase Photovoltaic Inverter for Unbalanced Fault

Satoh

Yamashita

Shirasaki

et al. 2020

IEEE Open J. Power Energy

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The feed-in tariff, introduced in 2012, led to a significant increase in Photovoltaics (PVs) throughout Japan. About half of PVs are three-phase PVs that are connected to low voltage or medium voltage networks. Central Research Institute of Electric Power Industry (CRIEPI) has developed root-mean square-based time-domain power system analysis tools used by all the Japanese utilities for dynamic studies following balanced and unbalanced faults for over the last thirty years. Two 10 kW three-phase PV inverter were tested in the CRIEPI's test lab reproducing various levels of the voltage dips that come from three-phase balanced and unbalanced faults with various fault duration. The PV model was developed and validated, comparing measured responses obtained in the test lab with simulated responses obtained by the time-domain simulation tool. Sensitivities of identified parameters to the model error are carefully examined, which proves that the same model parameters may be used for balanced and unbalanced faults. Derived model parameters are further verified, comparing the simulated response of the combined two PV outputs with the measured response. The excellent match of those responses demonstrates that individually identified parameters for the two single PV inverters are also adequate for representing the combined PV dynamics.

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Section: Discussionmentioning

confidence: 99%

Root-Mean Square Model of Three-Phase Photovoltaic Inverter for Unbalanced Fault

Satoh

Yamashita

Shirasaki

et al. 2020

IEEE Open J. Power Energy

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“…A three-machine nine-bus equivalent system [115] shown in Fig. 49 was used to validate the performance of the converter model developed in [116] along with its associated controls in a commercial transient stability analysis package. This system consists of 9 buses, 3 generators and 3 static loads.…”

Section: Case Study On Transient Stabilitymentioning

confidence: 99%

“…This model is referred to as the boundary current representation of the converter. The second positive-sequence converter model is a controlled voltage source converter model developed in [116].…”

Section: Case Study On Transient 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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146

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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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“…Therefore, it is appropriate to represent the full-converter wind generator either as a controllable voltage source or as a controllable current source for root-meansquares (RMT) or electromagnetic transient (EMT) simulation studies [16]. The DC-link dynamics and control are neglected in this model by assuming a constant DC voltage [15][16][17]. The gridside converter is presented as an ideal current source that injects I abc current in the system at the PCC (see Fig.…”

Section: Offshore Ac Gridmentioning

confidence: 99%

Characterisation of interaction in an offshore AC grid with large WPPs and VSC‐HVDCs

Shah

Barnes

Preece

2017

IET Renewable Power Generation

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To exploit the full and flexible capability of offshore voltage-sourced converter high-voltage DC (VSC-HVDC) lines, interaction studies in the offshore AC grid are required but are not well understood or reported. This study examines the interaction dynamics of an offshore AC grid for interconnecting large wind power plants (WPPs). The conventional eigenvalue analysis method has limitations which make the interaction analysis of such systems difficult. Hence, in this study, an impedance-based analytical approach is employed to investigate the interaction phenomena. The impedance model of a VSC-HVDC converter for both direct and vector control with outer and droop controls are derived along with the impedance model of the full-converter wind generator. The interaction dynamics of the offshore grid is predicted through the well-established Nyquist criteria and is validated using time-domain simulations. The analysis shows that the system stability is decidedly influenced by the control configurations and tuning of the VSC-HVDC lines.

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Converter Model for Representing Converter Interfaced Generation in Large Scale Grid Simulations

Cited by 71 publications

References 23 publications

Root-Mean Square Model of Three-Phase Photovoltaic Inverter for Unbalanced Fault

Root-Mean Square Model of Three-Phase Photovoltaic Inverter for Unbalanced Fault

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

Characterisation of interaction in an offshore AC grid with large WPPs and VSC‐HVDCs

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