Resonance Risk in Infirm-interconnected Grid Considering Photovoltaic Devices

Teng, Yufei; Zhang, Xing; Fan, Chunju; Chen, Xujiang; Zhang, Ran

doi:10.1109/powercon.2018.8602336

Cited by 3 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An admittance matrix for the IEEE 14 bus system is established in [8], with an analysis of the key resonance modes and the participation of each node in the system, followed by simulation verification. Additionally, a method for detecting resonance modes in weakly interconnected power grids, considering the harmonic impedance of the main power grid, is proposed in [9].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Suppression of Harmonic Resonance in Photovoltaic Grid-Connected Systems

Zhu,

Huang,

Ouyang

et al. 2024

Energies

View full text Add to dashboard Cite

In photovoltaic grid-connected systems, the interaction between grid-connected inverters and the grid may cause harmonic oscillation, which severely affects the normal operation of the system. To improve the quality of the output electrical energy, photovoltaic grid-connected systems often use LCL filters as output filters to filter out high-frequency harmonics. Taking the three-phase LCL-type photovoltaic grid-connected inverter system as an example, this paper addresses the issue of harmonic resonance. Firstly, based on the harmonic linearization method and considering the impact of the coupling compensation term on the grid-side voltage, a modular positive and negative sequence impedance modeling method is proposed, which simplifies the secondary modeling process of the converter under feedback control. Then, the stability analysis is conducted using the Nyquist criterion, revealing the mechanism of high-frequency resonance in photovoltaic grid-connected systems. Furthermore, this paper delves into the impact of changes in system parameters on impedance characteristics and system stability. The results indicate that the proportional coefficient of the internal loop current controller has a significant influence on system impedance characteristics. Additionally, this paper proposes an active damping design method that combines lead correction and capacitor current feedback to impedance-reconstruct the easily oscillating frequency band. Finally, the effectiveness of this method is verified in the simulation platform. Simulation results confirm the effectiveness of this method in suppressing harmonic resonance while maintaining rapid dynamic response.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis and Suppression of Harmonic Resonance in Photovoltaic Grid-Connected Systems

Zhu,

Huang,

Ouyang

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…The authors of [23] conclude that the damping reduction of power system EOM may occur at weak interconnection lines and increased wind power penetration level. In multiple grid-interconnected PV generation systems, the coupling behavior between PLLs and near converters may make the system more vulnerable or even lose converter-driven stability [24,25].…”

Section: Introductionmentioning

confidence: 99%

Converter-driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

Luo¹,

Zou²,

Bu³

2021

Preprint

View full text Add to dashboard Cite

Various renewable energy sources such as wind power and photovoltaic (PV) have been increasingly integrated into the power system through power electronic converters in recent years. However, power electronic converter-driven stability issues under specific circumstances, for instance, modal resonances might deteriorate the dynamic performance of the power systems or even threaten the overall stability. In this paper, the integration impact of a hybrid renewable energy source (HRES) system on modal interaction and converter-driven stability is investigated in an IEEE 16-machine 68-bus power system. Firstly, an HRES system is introduced, which consists of full converter-based wind power generation (FCWG) and full converter-based photovoltaic generation (FCPV). The equivalent dynamic models of FCWG and FCPV are then established, followed by the linearized state-space modeling. On this basis, converter-driven stability analyses are performed to reveal the modal resonance mechanisms of the interconnected power systems and the modal interaction phenomenon. Additionally, time-domain simulations are conducted to verify effectiveness of dynamic models and support the converter-driven stability analysis results. To avoid detrimental modal resonances, an optimization strategy is further proposed by retuning the controller parameters of the HRES system. The overall results demonstrate the modal interaction effect between external AC power system and the HRES system and its various impacts on converter-driven stability.

show abstract

Converter-Driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

Luo

Zou

et al. 2021

Energies

View full text Add to dashboard Cite

Renewable energy sources such as wind power and photovoltaics (PVs) have been increasingly integrated into the power system through power electronic converters in recent years. However, power electronic converter-driven stability has issues under specific circumstances, for instance, modal resonances might deteriorate the dynamic performance of the power systems or even threaten the overall stability. In this work, the integration impact of a hybrid renewable energy source (HRES) system on modal interaction and converter-driven stability was investigated in an IEEE 16-machine 68-bus power system. In this paper, firstly, an HRES system is introduced, which consists of full converter-based wind power generation (FCWG) and full converter-based photovoltaic generation (FCPV). The equivalent dynamic models of FCWG and FCPV are then established, followed by linearized state-space modeling. On this basis, converter-driven stability analysis was performed to reveal the modal resonance mechanisms between different renewable energy sources (RESs) and weak grids in the interconnected power systems and the multi-modal interaction phenomenon. Additionally, time-domain simulations were conducted to verify the effectiveness of dynamic models and support the converter-driven stability analysis results. To avoid detrimental modal resonances, a multi-modal and multi-parametric optimization strategy is further proposed by retuning the controller parameters of the multi-RESs in the HRES system. The overall results demonstrate the modal interaction effect between the external AC power system and the HRES system and its various impacts on converter-driven stability.

show abstract

Resonance Risk in Infirm-interconnected Grid Considering Photovoltaic Devices

Cited by 3 publications

References 15 publications

Analysis and Suppression of Harmonic Resonance in Photovoltaic Grid-Connected Systems

Analysis and Suppression of Harmonic Resonance in Photovoltaic Grid-Connected Systems

Converter-driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

Converter-Driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

Contact Info

Product

Resources

About