Fault ride-through capability enhancement by adapative voltage support control for inverter interfaced distributed generation

Zeng, Deliang; Guo, Jingmei; Ding, Maosheng; Geng, Duo

doi:10.1109/drpt.2015.7432588

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…12,76 There are 2 major issues that should be addressed by PVPPs to achieve the FRT requirements. 80 In this study, the simulation results show the effectiveness of this control of improving the PCC voltage support and helping to ensure the safety of semiconductor devices. The second one is the reactive current injection control, which is an effective solution for voltage recovery and to support the grid to overcome the voltage dip problems.…”

Section: Frt Requirementsmentioning

confidence: 76%

“…Zeng et al proposed a new control strategy to avoid overcurrent and overvoltage until the fault is ridden through safely. 80 In this study, the simulation results show the effectiveness of this control of improving the PCC voltage support and helping to ensure the safety of semiconductor devices. Another study 81 introduced a proportional-resonant current controller for the current limiter to suppress the overcurrent as well as guarantee a sinusoidal output current waveform.…”

Section: Frt Requirementsmentioning

confidence: 76%

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Grid-connected photovoltaic power plants: A review of the recent integration requirements in modern grid codes

Al-Shetwi

Sujod

2018

Int J Energy Res

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Summary The high integration of photovoltaic power plants (PVPPs) has started to affect the operation, stability, and security of utility grids. Thus, many countries have established new requirements for grid integration of solar photovoltaics to address the issues in stability and security of the power grid. In this paper, a comprehensive study of the recent international grid codes requirement concerning the penetration of PVPPs into electrical grids is provided. Firstly, the paper discusses the trends of PVPPs worldwide and the significance of improving grid codes' requirements. In addition, the comparison of common requirements covered in the majority of international grid codes considers high‐ and low‐voltage ride‐through capabilities, voltage and frequency regulation, and active and reactive power support requirements. Finally, a broad discussion on the compliance technology challenges and global harmonization of international grid codes that the PVPPs have to address is presented. The study summarizes the most recent international regulation regarding photovoltaic integration and research findings on the compliance of these regulations and proposed recommendations for future research. It also can assist power system operators to compare their existing requirements with other universal operators or establish their own regulations for the first time. Additionally, this research assists photovoltaic manufacturers and developers to get more accurate understanding from the recent global requirements enforced by the modern grid codes.

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Section: Frt Requirementsmentioning

confidence: 76%

Section: Frt Requirementsmentioning

confidence: 76%

Grid-connected photovoltaic power plants: A review of the recent integration requirements in modern grid codes

Al-Shetwi

Sujod

2018

Int J Energy Res

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“…This control, by a variable DC-link setting of voltage, accomplished the limiting of DC-link over-voltage. In [6], the author proposed another control strategy that performed well to control over-current and also the DC-link over-voltage during the faults. A proportional-resonant (PR) current controller was implemented in [7] for the limitation of over-current, and it also provided good sinusoidal output waveform.…”

Section: Introductionmentioning

confidence: 99%

Smart Sag Detection and Reactive Current Injection Control for a PV Microgrid under Voltage Faults

Khan,

Kim

2023

Energies

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Low-power photovoltaic distributed generators are increasing rapidly in number by the grids of the modern era, but they also bring up the concern of grid stability. To maintain grid stability, it is essential for the network operators to update the grid codes at regular intervals due to the case of highly penetrated grid-connected photovoltaic systems (GCPVs). Integration of large-scale electrical grids with renewable energy sources, one being photovoltaic systems, faces the challenge of riding through low-voltage (LVRT) phases. As compared to the previous grid codes for power generation, recent advances require distributed generation resources to provide for such capabilities under grid faults. This work contributes to the ongoing investigation of this specified and destabilizing fault condition. Various simulations of a PV microgrid system are carried out with the ability to ride through low-voltage faults, with the help of a DC-chopper circuit to absorb DC-link over-voltage, and the current is also maintained within acceptable limits according to the required standards. The fundamental contribution of this research is a proposed neural network (NN) control framework. This framework effectively detects voltage sags, comprehends their characteristics, and provides support to the system by injecting reactive current in accordance with the demands imposed by designated grid codes. This NN control model has been systematically developed utilizing data gathered from a vast array of testing simulations conducted under different and dynamic conditions. The proposed strategy, on the other hand, is compared with the RMS fault detection method in combination with the conventional LVRT algorithm. The NN control approach showed better results as compared to the conventional methods in terms of accuracy and robustness, especially when confronted with difficult sag situations.

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Voltage control in low voltage grids with independent operation of on-load tap changer and distributed photovoltaic inverters

Spertino

Ciocia

Mazza

et al. 2022

Electric Power Systems Research

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Fault ride-through capability enhancement by adapative voltage support control for inverter interfaced distributed generation

Cited by 5 publications

References 5 publications

Grid-connected photovoltaic power plants: A review of the recent integration requirements in modern grid codes

Grid-connected photovoltaic power plants: A review of the recent integration requirements in modern grid codes

Smart Sag Detection and Reactive Current Injection Control for a PV Microgrid under Voltage Faults

Voltage control in low voltage grids with independent operation of on-load tap changer and distributed photovoltaic inverters

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