Impact of Short-Circuit Ratio and Phase-Locked-Loop Parameters on the Small-Signal Behavior of a VSC-HVDC Converter

Zhou, Jenny Zheng; Ding, Hui; Fan, Shengjun; Zhang, Yi; Gole, Aniruddha M.

doi:10.1109/tpwrd.2014.2330518

Cited by 539 publications

(323 citation statements)

References 19 publications

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“…In CrossCheck date: 23 May 2017 VSC-based high voltage direct current (HVDC) transmission systems, the PLL parameters have been found to limit the maximum power transfer capability [18]. In [19], the impact of short-circuit ratio and phase-locked-loop parameters on small-signal behavior is investigated, However, it only takes L-filter-based inverters into account.…”

Section: Introductionmentioning

confidence: 99%

Impact of phase-locked loop on stability of active damped LCL-filter-based grid-connected inverters with capacitor voltage feedback

Guo

Liu

Wang

2017

J. Mod. Power Syst. Clean Energy

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Active damped LCL-filter-based inverters have been widely used for grid-connected distributed generation (DG) systems. In weak grids, however, the phase-locked loop (PLL) dynamics may detrimentally affect the stability of grid-connected inverters due to interaction between the PLL and the controller. In order to solve the problem, the impact of PLL dynamics on small-signal stability is investigated for the active damped LCL-filtered grid-connected inverters with capacitor voltage feedback. The system closed-loop transfer function is established based on the Norton equivalent model by taking the PLL dynamics into account. Using an established model, the system stability boundary is identified from the viewpoint of PLL bandwidth and current regulator gain. The accuracy of the ranges of stability for the PLL bandwidth and current regulator gain is verified by both simulation and experimental results.

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Section: Introductionmentioning

confidence: 99%

Impact of phase-locked loop on stability of active damped LCL-filter-based grid-connected inverters with capacitor voltage feedback

Guo

Liu

Wang

2017

J. Mod. Power Syst. Clean Energy

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“…However, as noted in various publications (e.g. [2] and [3]) the so-called vector control scheme of the VSC may become unstable when connected to a weak or a very weak AC grid.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, the work in [3] focuses on the destabilizing effect of the Phase Locked Loop (PLL) of the VSC. It is shown that the maximum theoretical limit of power transfer can be approached only with considerable slowing down of the PLL response.…”

Section: Introductionmentioning

confidence: 99%

Stability of a Voltage Source Converter Subject to Decrease of Short-Circuit Capacity: A Case Study

Papangelis¹,

Debry²,

Prevost³

et al. 2018

2018 Power Systems Computation Conference (PSCC)

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Abstract-The subject of this paper is the investigation of the stability of a Voltage Source Converter (VSC) undergoing a sudden decrease of the Short Circuit Capacity of the AC system to which it is connected. A case study is reported on a simple system including an HVDC terminal and a Thévenin equivalent. First, a small-signal stability analysis is performed showing that the PLL-based vector control may become unstable at powers lower than the theoretical static stability limit. Dynamic simulations demonstrate that the stability limit may further decrease depending on the disturbance. The need for a fast instability detection method is highlighted.

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“…Considering i) the potential adverse impact of Phase-Locked Loop (PLL) parameters on the small-signal stability of LCC and VSC stations [9], [13] and ii) close connection of STATCOM and LCC inverter station at AC bulbar, this paper mainly investigates the impact of PLL gains and AC voltage control parameters of STATCOM on the system small-signal stability. …”

Section: Introductionmentioning

confidence: 99%

Small-Signal Dynamic Analysis of LCC-HVDC with STATCOM at the Inverter Busbar

Liu¹,

Jiang

Guo

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. This paper develops a linearized small-signal dynamic model of a LineCommutated-Converter based HVDC (LCC-HVDC) system with STATCOM at the inverter busbar, and validates its accuracy by comparing time-domain responses from small-signal model and PSCAD-based simulation results. Considering the potential impact of Phase-Locked-Loop (PLL) parameters on the study system and the close connection of STATCOM and LCC inverter station at AC busbar, this paper investigates the impact of PLL gains and AC voltage control parameters of STATCOM on the system small-signal stability. The studies show that (i) the PLL gain has highly impact on the study system and smaller PLL gains are preferable; (ii) larger values of both the proportional gain and the integral gain of AC voltage controller of STATCOM could result in oscillation/ instability of the system.

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Impact of Short-Circuit Ratio and Phase-Locked-Loop Parameters on the Small-Signal Behavior of a VSC-HVDC Converter

Cited by 539 publications

References 19 publications

Impact of phase-locked loop on stability of active damped LCL-filter-based grid-connected inverters with capacitor voltage feedback

Impact of phase-locked loop on stability of active damped LCL-filter-based grid-connected inverters with capacitor voltage feedback

Stability of a Voltage Source Converter Subject to Decrease of Short-Circuit Capacity: A Case Study

Small-Signal Dynamic Analysis of LCC-HVDC with STATCOM at the Inverter Busbar

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