The Impact of Voltage Regulation of Multiinfeed VSC-HVDC on Power System Stability

Shah, Rakibuzzaman; Preece, Robin; Barnes, Mike

doi:10.1109/tec.2018.2831692

Cited by 30 publications

(21 citation statements)

References 29 publications

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“…However, the study of [8][9][10] implies that the AC voltage regulation in the VSC-HVDC link may adversely affect the dynamic performance of the AC system. The reported case studies in [8] indicate that the embedded VSC-HVDC grid can aggravate interarea oscillations of the host AC system without supplementary control and based on the conventional dq-frame control structure.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, it is found that AC voltage control affects the damping of power system oscillations little. The work in [10] shows that the AC voltage regulation in the VSC-HVDC link may adversely affect the dynamic performance of the host weak AC system under the multi-infeed VSC-HVDC scenario.…”

Section: Introductionmentioning

confidence: 99%

“…The presented control strategies and parameters optimized methods can be optimized in theory but may be not suitable in practice. The work of [5] is based on the Danish transmission grid model, and the work of [10,11,15] is based on the northern Scottish transmission model. These studies are restricted to the realistic grid with multi-infeed VSC-HVDC.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Influence of VSC–HVDC Reactive Power Control Mode on AC Power System Stability

Wang¹,

Zhou²,

et al. 2020

Energies

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Voltage source converter-based high-voltage direct current (VSC-HVDC) has the advantage of fast and independent controllability on active and reactive power. This paper focuses on effects of commonly proposed reactive power control modes, constant reactive power control and AC voltage margin control. Based on the mathematical model of single machine infinity equivalent system with embedded VSC-HVDC, the influence of VSC-HVDC with different reactive power control strategies on transient stability and dynamic stability of the AC system is studied. Then case studies were conducted with a realistic model of grid. The dynamic responses of AC/DC systems for different VSC-HVDC reactive power control modes were compared in detail. It is shown that compared to constant reactive power control, AC voltage margin control can provide voltage support to enhance the transient angle stability of an AC system. However, the fluctuant reactive power injected into a weak AC system may adversely affect power system oscillation damping for VSC-HVDC with AC voltage margin control, if the parameters of the controller have not been optimized to suppress the low-frequency oscillation. The results of this paper can provide certain reference for the decision of an appropriate VSC-HVDC reactive power control mode in practice.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Influence of VSC–HVDC Reactive Power Control Mode on AC Power System Stability

Wang¹,

Zhou²,

et al. 2020

Energies

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show abstract

“…Also, it will allow to for example automatically identify the over/under and loading elements in the power grid, also it can help to identifies exactly the suitable bus that can carry the new load. [27][28][29][30][31][32][33][34][35][36][37][38]. Moreover, DIgSILENT PowerFactory offers a range of load flow calculation methods, including a full AC Newton-Raphson technique (balanced and unbalanced) and a linear DC method.…”

Section: Introductionmentioning

confidence: 99%

“…Many authors use the DIgSILENT as a benchmark to simulate and to analyze the power system load flow problem [27][28][29][30][31], Newton-Raphson Load flow method modeling by using DIgSILENT is explained in [27,28]. For load flow study and grid simulation, the DIgSILENT is preferred and is recommended in a comparison between many software packages that is because it behaved as it is expected [27][28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Impact of High Penetration Levels of PV Power Plants on the Capacity, Frequency and Voltage Stability of Egypt’s Unified Grid

et al. 2019

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In this paper, the impact of integrating photovoltaic plants (PVPs) with high penetration levels into the national utility grid of Egypt is demonstrated. Load flow analysis is used to examine the grid capacity in the case of integrating the desired PVPs and computer simulations are also used to assess the upgrading of the transmission network to increase its capacity. Furthermore, the impact of increasing the output power generated from PVPs, during normal conditions, on the static voltage stability was explored. During transient conditions of operation (three-phase short circuit and outage of a large generating station), the impact of high penetration levels of PVPs on the voltage and frequency stability has been presented. Professional DIgSILENT PowerFactory simulation package was used for implementation of all simulation studies. The results of frequency stability analysis proved that the national grid could be maintained stable even when the PVPs reached a penetration level up to 3000 MW of the total generation in Egypt. Transmission network upgrading to accommodate up to 3000 MW from the proposed PV power plants by 2025 is suggested. In addition, analysis of voltage stability manifests that the dynamic behavior of the voltage depends remarkably on the short circuit capacity of the grid at the point of integrating the PVPs.

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Stability enhancement module for grid‐following converters: Hardware implementation and validation

Fan

Zhou

et al. 2021

Int Trans Electr Energ Syst

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Summary Low‐frequency oscillations limit power delivery of voltage‐source converter interfaced resources, for example, wind and solar, operating in grid‐following control mode. Our prior research identified the instability mechanism as the coupling between real power and voltage at point of common coupling. In turn, a stability enhancement control was proposed to weaken the coupling by introducing a simple voltage‐based feedback loop. The stability enhancement control has been validated via electromagnetic transient simulation testbeds. The objectives of this paper are (a) to provide a more insightful explanation of the enhancement module by examining the impedance of the grid‐following converter and (b) to verify the performance of the stability module using a hardware testbed. The theoretic examination demonstrates that stability enhancement module effectively reduces the negative resistance effect of Zqq and thus boosts stability. The experimental research leads to a hardware testbed of a grid‐following converter with the ability of demonstrating low‐frequency oscillations. The experimental results demonstrate the efficacy of the proposed stability enhancement control and the readiness of commercial realization of the stability enhancement unit.

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The Impact of Voltage Regulation of Multiinfeed VSC-HVDC on Power System Stability

Cited by 30 publications

References 29 publications

The Influence of VSC–HVDC Reactive Power Control Mode on AC Power System Stability

The Influence of VSC–HVDC Reactive Power Control Mode on AC Power System Stability

Evaluation of the Impact of High Penetration Levels of PV Power Plants on the Capacity, Frequency and Voltage Stability of Egypt’s Unified Grid

Stability enhancement module for grid‐following converters: Hardware implementation and validation

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