Generalized Dynamic VSC MTDC Model for Power System Stability Studies

Cole, Stijn; Beerten, Jef; Belmans, Ronnie

doi:10.1109/tpwrs.2010.2040846

Cited by 263 publications

(152 citation statements)

References 13 publications

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“…whereas the total converter losses P loss represented by Equation (6) is a combination of constant, linear and variable components [24]. Constant losses are circuit losses associated with the off-state of the device, while linear losses are associated with the switching losses related to current state, the variable losses are associated with generated heat loss and reverse recovery loss.…”

Section: Modeling Converter Lossesmentioning

confidence: 99%

“…VSC-based technologies offer significant advantages such as low cost, reduction in the size of the converter, reliable operation with weak AC systems. Due to completely different principles of operation of VSC-MTDC networks, different researchers have recently covered various technical issues, such as stability analysis [17], control strategies [18][19][20], locating of DC fault and protection [21,22], integrating wind farms [23] and dynamic modeling for power system simulation [24].…”

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confidence: 99%

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A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios

et al. 2018

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Abstract:With the recent developments in power electronics technologies, increased deployment of distributed energy resources (DER) with DC output type at distribution voltage levels and significant increase in the number of sensitive AC and DC loads integrated in distribution network have enforced the traditional power network in the continuous renovation process. In this paper, the load flow solution of hybrid AC/DC distribution networks with the multi-terminal configuration is studied. The impact of voltage source converter (VSC) losses and AC and DC line losses in the presence of DER in the distribution system are assessed. The motivation of this analysis is to consider an increase in the number of converter stations which might result in non-negligible converter losses and the presence of various DER within the network imposing different network scenarios. The proposed schemes are simulated on two modified IEEE 33 bus hybrid AC/DC distribution network test system equipped with VSC-MTDC and the results are presented. Obtained results show that by considering the network losses and the converter losses with large number of converters within the network could lead to very different load flow solution and power transfer between networks, especially considering the AC or DC bus dominated network.

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Section: Modeling Converter Lossesmentioning

confidence: 99%

mentioning

confidence: 99%

A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios

et al. 2018

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“…Its model is largely inspired of the material presented in Refs. [12,13]. In order to decouple active and reactive power controls, the dq reference frame is used, with the d axis aligned with the AC voltage phasor ̅ , as shown in Fig.…”

Section: Converter Modelmentioning

confidence: 99%

Frequency support among asynchronous AC systems through VSCs emulating power plants

Papangelis¹,

Guillaud

Cutsem

2015

11th IET International Conference on AC and DC Power Transmission

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This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support their frequencies after a disturbance. The scheme involves no communication between VSCs. It is activated upon detection of a significant frequency deviation, with the possibility to limit the support requested from other AC systems. It relies on an integral control enforcing the frequency droop characteristics (of classical speed governors), in addition to the voltage-droop control of VSCs. The controller is tuned to emulate the response of a power plant, while avoiding excessive transients in the HVDC system, and limiting the impact on the other AC systems.

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“…VSC-HVDC can control active and reactive power independently, especially as it is able to provide black-start capability [2,3], whose typical topology of two-terminal VSC-HVDC system is shown in Figure 1. Multi-terminal DC (MTDC) grids are foreseen as an alternative solution to point-to-point connections owing to their increased redundancy and higher flexibility [4]. Intensive researches have recently been conducted to resolve various technical issues in the VSC-MTDC system, such as locating and isolating of DC faults [5], operation and control of MTDC grid integrating wind farms and so on [6,7].…”

Section: Introductionmentioning

confidence: 99%

Improved Adaptive Droop Control Design for Optimal Power Sharing in VSC-MTDC Integrating Wind Farms

Ran

Miao

2015

Energies

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Abstract:With the advance of insulated gate bipolar transistor (IGBT) converters, Multi-Terminal DC (MTDC) based on the voltage-source converter (VSC) has developed rapidly in renewable and electric power systems. To reduce the copper loss of large capacity and long distance DC transmission line, an improved droop control design based on optimal power sharing in VSC-MTDC integrating offshore wind farm is proposed. The proposed approach provided a calculation method for power-voltage droop coefficients under two different scenarios either considering local load or not. The available headroom of each converter station was considered as a converter outage, to participate in the power adjustment according to their ability. A four-terminal MTDC model system including two large scale wind farms was set up in PSCAD/EMTDC. Then, the proposed control strategy was verified through simulation under the various conditions, including wind speed variation, rectifier outage and inverter outage, and a three-phase short-circuit of the converter.

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Generalized Dynamic VSC MTDC Model for Power System Stability Studies

Cited by 263 publications

References 13 publications

A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios

A Load Flow Analysis for AC/DC Hybrid Distribution Network Incorporated with Distributed Energy Resources for Different Grid Scenarios

Frequency support among asynchronous AC systems through VSCs emulating power plants

Improved Adaptive Droop Control Design for Optimal Power Sharing in VSC-MTDC Integrating Wind Farms

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