Dynamic Interactions of the MMC-HVDC Grid and its Host AC System Due to AC-Side Disturbances

Ajaei, Firouz Badrkhani; Iravani, Reza

doi:10.1109/tpwrd.2015.2512178

Cited by 49 publications

(26 citation statements)

References 22 publications

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“…This section will outline the MTDC grid control schemes necessary to enable reconfigurability during DC outage contingencies. Full details of standard controls for VSC-HVDC are not discussed in detail but can be found in [9]- [15].…”

Section: Mtdc Grid Controlmentioning

confidence: 99%

“…The adaptive scheme of droop control strategy and the impacts of the autonomous control during transient events are reported in [8]. The dynamic interaction between the Modular Multilevel Converter (MMC) based MTDC grid and AC system is presented in [9] with a DC voltage droop to maintain the voltage stability of the DC system. The VSC-HVDC system control parameters and their impacts on the stability of the AC system in the electromechanical time-frame are discussed in [10].…”

Section: Introductionmentioning

confidence: 99%

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Impact of MTDC Grid Reconfiguration and Control on the Dynamics of the GB System

Shah¹,

Barnes²,

Preece³

2019

15th IET International Conference on AC and DC Power Transmission (ACDC 2019)

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Multi-terminal DC (MTDC) grids are becoming increasingly popular for interconnecting non-synchronous generating resources such as offshore wind power plants (WPPs). The benefit of MTDC systems is that they can be reconfigured during contingencies to maintain the supply of power to the host AC systems. DC grid reconfiguration in MTDC systems will inevitably change the power injections to the host AC system, and will thus affect the dynamic behaviour of the AC system. This paper investigates the dynamic behaviour of the representative Great British (GB) transmission system (i.e. a reduced order dynamic model) for a series of reconfigurations in a meshed MTDC grid connecting offshore WPPs to the system. Hierarchical control strategies for the MTDC system including a DC power flow solver (PFS) and pilot voltage droop (PVD) are compared. From the analysis, it is observed that the reconfiguration of MTDC grid has a notable impact on large-disturbance dynamics of the GB transmission system.

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Section: Mtdc Grid Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of MTDC Grid Reconfiguration and Control on the Dynamics of the GB System

Shah¹,

Barnes²,

Preece³

2019

15th IET International Conference on AC and DC Power Transmission (ACDC 2019)

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“…Dynamic interactions of MMC‐based HVDC network are analysed in Ajaei and Iravani during AC‐side disturbances. Transient behaviour of entire network is also investigated.…”

Section: Application Areasmentioning

confidence: 99%

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

Kurtoğlu

Eroğlu

Arslan

et al. 2018

Int Trans Electr Energ Syst

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Summary The modular multilevel converters (MMCs) are frequently preferred for medium and high power energy conversion systems thanks to their modular structure and high quality output waveform. The remarkable studies related to the MMC have been carried out in recent years, which are mainly focused on its topology, control, or application. In this paper, MMC circuit topologies consisting of traditional submodule cells and new proposed configurations are introduced, and their control process, modulation techniques, and application areas are discussed in order to provide the readers the current state of the art of MMC technology. A wide part of this article is devoted to demonstrate the recent contributions arising in MMC studies. In this context, this paper not only outlines the circuit topology, control objectives, and applications of the MMC but also presents a comprehensive review, principally in terms of the latest developments of it. Ultimately, detailed proposals and new possible topics are provided to drive future expectations of MMC technology.

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“…The DC network includes overhead lines and underground cables. Details of the HVDC grid and its parameters are given in [10] and Table I. The positive direction of power is assumed from the AC side to the DC side.…”

Section: A Test Systemmentioning

confidence: 99%

“…6. After 1 ms, the fault is detected and the DC transmission line is tripped out by the corresponding DC circuit breakers after another 1 ms [10]. Fig.…”

Section: Performance Evaluationmentioning

confidence: 99%

An Enhanced DC Voltage Droop-Control for the VSC--HVDC Grid

Liu

et al. 2017

IEEE Trans. Power Syst.

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 Abstract-This paper introduces an enhanced droop-based DC voltage control method, including dead-band, for applications to the high-voltage direct-current (HVDC) grid that utilizes the voltage-sourced converter (VSC) technology. The proposed droop-control structure also autonomously imposes energy balance between the HVDC grid and its host AC system. The droop-control method (i) divides the VSC stations into four groups, (ii) activates the droop-control of each group based on a pre-specified voltage margin and (iii) introduces an improved power-voltage characteristic for desirable VSC station dynamic performance. Feasibility and performance of the proposed control method are evaluated based on time-domain simulation studies in the PSCAD platform, using the IEEE-39-Bus system which imbeds a five-terminal VSC-HVDC grid. Each VSC station is a monopolar modular multilevel converter (MMC). The study results show that the proposed droop-control method enables the HVDC-AC system to reach a new steady-state after transient events.

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Dynamic Interactions of the MMC-HVDC Grid and its Host AC System Due to AC-Side Disturbances

Cited by 49 publications

References 22 publications

Impact of MTDC Grid Reconfiguration and Control on the Dynamics of the GB System

Impact of MTDC Grid Reconfiguration and Control on the Dynamics of the GB System

Recent contributions and future prospects of the modular multilevel converters: A comprehensive review

An Enhanced DC Voltage Droop-Control for the VSC--HVDC Grid

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