Design and analysation of DC voltage synchronisation control for a VSC‐MTDC based on virtual synchronous generator

Cao, Xin; Han, Minxiao; Khan, Zmarrak Wali; Zhang, Youmin

doi:10.1049/iet-gtd.2018.6078

Cited by 8 publications

(11 citation statements)

References 25 publications

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“…In this control logic, the DC voltage can be utilized as the feedback signal to help VSC achieve synchronism. Similar ideas can be found in References 35-37, where the DVSC was applied in photovoltaic system, 35 HVDC links 36,37 and WT applications. 38 However, the above PLL-free controls [25][26][27][28][29][30][31][32][33][34][35][36][37] are mainly for the grid-connected VSC; they did not involve the control designs for stand-alone operation of PMSG-based WT.…”

Section: Literature Reviewmentioning

confidence: 54%

“…To enable the voltage source converter (VSC) with the grid-forming capability without PLL and external power sources, previous studies [25][26][27][28][29][30][31][32][33][34][35][36][37] have proposed several solutions. The power synchronization control (PSC), which achieves the self-synchronization of VSC without PLL by controlling the active power, was first proposed in Reference 25.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Recent publications promote the VSG control with respect to damping support, 30 frequency support 31 and fault ride-through ability, 32 The above PLL-free controls [25][26][27][28][29][30][31][32] are achieved by the active power modulation. On the other hand, the emerging DC voltage-based synchronization controls (DVSCs) [33][34][35][36][37][38] seek to achieve self-synchronism of VSC using DC voltage. Huang et al proposed a novel non-PLL approach 33,34 for VSC utilizing DC-link voltage.…”

Section: Literature Reviewmentioning

confidence: 99%

“…2. The above PLL-free strategies [25][26][27][28][29][30][31][32][33][34][35][36][37][38] mainly focus on the interactions between the single VSC and AC system in grid-connected mode. They did not consider the coordination of RSC and GSC of VSWTs, nor did they involve the dynamics of WTs and the power balance between wind energy and local loads.…”

Section: Research Gaps and Motivationmentioning

confidence: 99%

“…Rearranging Equation (36), the relationship between active power change from converter with Strategy I and II during sudden load change can be formulated as follows:…”

Section: Demand Response Analysis With Proposed Control Strategiesmentioning

confidence: 99%

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Control strategies for permanent magnet synchronous generator‐based wind turbine with independent grid‐forming capability in stand‐alone operation mode

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Zhang

et al. 2021

Int Trans Electr Energ Syst

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Section: Literature Reviewmentioning

confidence: 54%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Research Gaps and Motivationmentioning

confidence: 99%

“…Rearranging Equation (36), the relationship between active power change from converter with Strategy I and II during sudden load change can be formulated as follows:…”

Section: Demand Response Analysis With Proposed Control Strategiesmentioning

confidence: 99%

See 3 more Smart Citations

Control strategies for permanent magnet synchronous generator‐based wind turbine with independent grid‐forming capability in stand‐alone operation mode

Yuan

Zhang

et al. 2021

Int Trans Electr Energ Syst

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Novel cascading scheme of VSC‐HVDC with DC voltage synchronisation control for system frequency support

Yuan

Zhang

et al. 2021

IET Generation Trans & Dist

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This paper introduces a novel cascading frequency regulation scheme (CFRS) for VSC-HVDC to provide strong support for the connected weak AC grid without phase-locked loop and remote-communication considering the cost-effective property. The proposed CFRS utilises a DC voltage synchronisation control to enable the self-synchronisation of VSC-HVDC without phase-locked loop, while the corresponding inertia response can be exerted via utilising the stored HVDC capacitor energy. Meanwhile, the DC voltage acts as the reflection of system frequency, enabling the coordination between two-end VSC stations without communication. More importantly, to fully utilise the VSC-HVDC potentials, the CFRS that sequentially activates HVDC capacitor and primary frequency control is implemented so that the energy loss and the detrimental control impacts on the sendingend systems can be minimised while making sure the requirement of system frequency support. Analytical derivations have been done to evaluate the contribution of the proposed CFRS to system frequency regulation. Furthermore, the effectiveness of the proposed scheme has been well validated in PSCAD/EMTDC under several power system contingencies by fully comparing with existing control schemes. The proposed CFRS stands out by the reduced complexity of the control structure, the robustness for connecting the very weak AC grid and the fast frequency regulation ability with consideration of cost-effective property.

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Variable parameter practical model of synchronous generator for precise simulation of power system

Yuan

et al. 2022

IET Generation Trans & Dist

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The model of synchronous generator (SG) plays an important role in the simulation of power system and planning of power grid. With the constant parameter practical model (CPPM), it is difficult to consider the time‐varying characteristic of the parameters affected by the complex non‐linear factors, such as the saturation, distortion, skin effect and various spatial harmonics; thus, it cannot guarantee the precision of the simulation. In this paper, a variable parameter practical model (VPPM) of SG is proposed by coupling the CPPM with the three‐dimensional parameter database and the parameter addressing model. The three‐dimensional parameter database containing the steady‐state, transient and sub‐transient reactances and time constants is established with the terminal voltage, active power and reactive power as the variables. The parameters of the VPPM are selected through linear inter‐polation according to the operating states of the generator. In order to verify the precision of the VPPM, a single‐machine infinite system and a real power system with 204 buses and 107 generators are simulated. The result indicates that the VPPM is more accurate than the CPPM, and the stability limit and damping ratio calculated by the VPPM are larger than that by the CPPM. The study can provide important support for the precise simulation of the power system.

show abstract

Design and analysation of DC voltage synchronisation control for a VSC‐MTDC based on virtual synchronous generator

Cited by 8 publications

References 25 publications

Control strategies for permanent magnet synchronous generator‐based wind turbine with independent grid‐forming capability in stand‐alone operation mode

Control strategies for permanent magnet synchronous generator‐based wind turbine with independent grid‐forming capability in stand‐alone operation mode

Novel cascading scheme of VSC‐HVDC with DC voltage synchronisation control for system frequency support

Variable parameter practical model of synchronous generator for precise simulation of power system

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