Coordinated Operation and Control of VSC Based Multiterminal High Voltage DC Transmission Systems

Raza, Ali; Xu, Dianguo; Liu, Yuchao; Su, Xunwen; Williams, B.W.; Cecati, Carlo

doi:10.1109/tste.2015.2497340

Cited by 64 publications

(50 citation statements)

References 18 publications

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“…The performance of MT-HVdc greatly depends on the employed control strategy, while control mainly relies on a kind of ac grid connection and the dc network topology [30]. This paper does not investigate control strategies in detail; however, operation and control of the MT-HVdc grid are discussed in our published research [33][34][35]. Accordingly, P−V ac control is deployed to regulate the ac voltages of WFs at a precise level [33].…”

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

“…This paper does not investigate control strategies in detail; however, operation and control of the MT-HVdc grid are discussed in our published research [33][34][35]. Accordingly, P−V ac control is deployed to regulate the ac voltages of WFs at a precise level [33]. Proportional integral (PI) control is used for constant voltage generation at 50 Hz.…”

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

“…Proportional integral (PI) control is used for constant voltage generation at 50 Hz. PI controller diminishes the voltage error (e = V WF * − V WF ), which was then employed as a performance index [33,34]. MT-HVdc system specifications and parameters for PI controllers are enlisted in Table 1.…”

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

“…k is droop characteristic slope. Control of Figure 2 is more proficient than customary control and gives the least PI error [33] by adding limiters. As shown in Figure 1, for assessment of MT-HVdc topology, Vdc and Q are controlled at GS-VSCs.…”

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

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A Multi-Terminal HVdc Grid Topology Proposal for Offshore Wind Farms

et al. 2020

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Although various topologies of multi-terminal high voltage direct current (MT-HVdc) transmission systems are available in the literature, most of them are prone to loss of flexibility, reliability, stability, and redundancy in the events of grid contingencies. In this research, two new wind farms and substation ring topology (2WF-SSRT) are designed and proposed to address the aforementioned shortcomings. The objective of this paper is to investigate MT-HVdc grid topologies for integrating large offshore wind farms with an emphasis on power loss in the event of a dc grid fault or mainland alternating current (ac)grid abnormality. Standards and control of voltage source converter (VSC) based MT-HVdc grids are defined and discussed. High voltage dc switch-gear and dc circuit topologies are appraised based on the necessity of dc cables, HVdc circuit breakers, and extra offshore platforms. In this paper, the proposed topology is analyzed and compared with the formers for number and ratings of offshore substations, dc breakers, ultra-fast mechanical actuators, dc circuits, cost, flexibility, utilization, and redundancy of HVdc links. Coordinated operation of various topologies is assessed and compared with respect to the designed control scheme via a developed EMTDC/PSCAD simulation platform considering three fault scenarios: dc fault on transmission link connecting the wind farm to mainland power converters, dc fault within substation ring of VSC-HVdc stations, and ultimate disconnection of grid side VSC station. Results show that 2WF-SSRT is a promising topology for future MT-HVdc grids.

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Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

Section: Mt-hvdc Transmission Systems and Necessitiesmentioning

confidence: 99%

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A Multi-Terminal HVdc Grid Topology Proposal for Offshore Wind Farms

et al. 2020

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“…A quite a number of publications are devoted to several subject of MTDC involving since the classical steady state performance [4][5][6][7][8], classical and security constrained optimal power flow [7,[9][10][11], modelling [12][13][14], control and protection [15][16][17][18][19][20], and simulation of dynamic behaviour [4,[21][22][23][24]. An aspect that requires evaluation, the traditional reliability and availability related to outages as to transient reliability related to performance during and recovery after temporary faults and disturbances.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behaviour of Multi-Terminal VSC-Based HVDC after a Converter Outage: DC Control Strategy

González-Longatt¹,

Arnaltes

Rodriguez-Amenedo

2016

REPQJ

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Abstract.The aim of this paper is to evaluate the effect of DC-voltage control strategy on dynamic behaviour of multi-terminal VoltageSource Converter (VSC)-Based HVDC after a converter outage. In this paper, two dc voltage control strategies are considered: (i) standard voltage margin method (SVMM) and (ii) standard voltage-droop method (SVDM). The impact is evaluated in this paper using time-domain simulations on simple test system using DIgSILENT ® PowerFactory TM considering a sudden disconnection of a converter-station. Simulation results demonstrate how important is the dc-voltage control strategy and the location/number of dc-buses involved in the dc-voltage on the dynamic response of the MTDC systems. The voltage margin control is capable to survive a converter outage just if this converter is operating on constant power mode.

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Coordinated power control strategy of voltage source converter‐based multiterminal high‐voltage direct current based on the voltage‐current curve

Lin

Wang

et al. 2019

IEEJ Transactions Elec Engng

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To achieve power distribution quickly and improve the anti-interference capability of the voltage source converter-based multiterminal high-voltage direct current (VSC-MTDC) system, a coordinated control strategy based on the V-I curve is proposed in this article. The proposed control strategy includes the conventional droop control, the improved droop control, which considers the voltage dead band and fixed dc voltage control. The conventional droop control is utilized in one of the multiple converter stations, the fixed dc voltage control is adopted in the other one, and the improved droop control is applied to all of the rest converter stations. In this way, the unbalanced power will be distributed rapidly only through the conventional droop control, when the change of dc voltage is within the dead band. Meanwhile, all the droop coefficients of the improved droop control are adjusted automatically following the changes in dc current and dc voltage, and the converter stations regulate the unbalanced power coordinately, when the dc voltage is changed beyond the dead band. A model of a four-terminal voltage source converterbased high-voltage direct current (VSC-HVDC) transmission system is built in PSCAD/EMTDC, and the simulation results are presented to validate the expected performance of the proposed control strategy.

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Coordinated Operation and Control of VSC Based Multiterminal High Voltage DC Transmission Systems

Cited by 64 publications

References 18 publications

A Multi-Terminal HVdc Grid Topology Proposal for Offshore Wind Farms

A Multi-Terminal HVdc Grid Topology Proposal for Offshore Wind Farms

Dynamic Behaviour of Multi-Terminal VSC-Based HVDC after a Converter Outage: DC Control Strategy

Coordinated power control strategy of voltage source converter‐based multiterminal high‐voltage direct current based on the voltage‐current curve

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