High Frequency Resonance Analysis and Resonance Suppression of a Grid-Connected Inverter Coupled With a Long Feeder

Shen, Hong; Liu, Zhao; Liu, Weichao; Wang, Caisheng; Sun, Xiaofeng; Yang, Fan; Zhang, Min

doi:10.1109/tpwrd.2022.3202548

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…The dynamic nature of renewable energy generation, influenced by sunlight intensity or wind speed variations, leads to fluctuations in the output power of grid-connected inverters. These fluctuations can impact voltage and frequency levels, potentially causing harmonics, voltage sag, and other power quality issues [2][3].…”

Section: Introductionmentioning

confidence: 99%

Sequence-impedance-based modelling of grid-connected inverter considering AC-side and AC-DC frequency coupling effects

Tang,

Zhu,

Hong

2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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The interaction between the inverter and the grid can result in system oscillation or instability. A widely used approach for investigating the stability of grid-connected inverter systems is sequence-impedance-based analysis. Most impedance/admittance models of inverters tend to ignore the influence of converter DC port disturbances and external loop control on system stability, and directly equate the DC side of the inverter as a voltage source. When the inverter DC port disturbances are large, ignoring the strong frequency coupling between AC and DC may lead to system stability misjudgement. To remedy this deficiency, a third-order derivative model is proposed for a typical LCL-filtered gridconnected converter in this paper, which takes into account the AC-side frequency coupling and AC-DC frequency coupling. The simulation outcomes validate the accuracy of the proposed model.

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Section: Introductionmentioning

confidence: 99%

Sequence-impedance-based modelling of grid-connected inverter considering AC-side and AC-DC frequency coupling effects

Tang,

Zhu,

Hong

2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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“…The resonance problem in the above scenarios is no longer just about the energy exchange between inductors and capacitors. Complicated and diverse resonance interaction draws the interest to extensive exploration of resonance suppression strategies under Energies 2024, 17, 480 2 of 17 different scenarios [13][14][15][16]. Coping with the resonance interaction of multi-inverter parallel grid-connected systems, and between permanent magnet synchronous generators and virtual synchronous machines [17][18][19], quantizes the influence of parameter variation on resonance frequency and impedance, and the resonance is suppressed through parameter optimization.…”

Section: Introductionmentioning

confidence: 99%

DC Active Damper Control Strategy Based on Resonance Suppression Effectiveness Evaluation Method

Zhang,

Wang,

Zhu

et al. 2024

Energies

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With the complication of the power system, features of the resonance interaction behave diversely and pose a threat to the effectiveness of the resonance suppression strategies. Existing resonance suppression strategies are usually designed for specific scenarios which are in close correlation with the impedance frequency-amplitude distribution, and their adaptability under different scenarios is hard to evaluate. In this paper, the resonance suppression domain of a DC distribution network is derived based on the node impedance variation before/after the resonance is suppressed. The derived criterion takes the admittance change of the resonance suppression strategies as variables, and the conservative/ideal suppression domain criteria are defined. On this basis, a method for evaluating the effectiveness of resonance suppression strategies is proposed, which simplifies the evaluation process and avoids a complicated matrix inverse process to each resonance suppression strategy during the system impedance calculation. Furthermore, a DC active damper control strategy based on the resonance suppression strategy evaluation is proposed, and the proposed strategy could suppress resonances under different scenarios by a targeted design of the reshaping admittance parameters. Time domain simulations with a 5-node distribution network are carried out to verify the proposed method.

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The cascaded steady-state lumped parameter circuits for describing resonance characteristics of transmission lines

Sun,

Lei,

et al. 2025

Electric Power Systems Research

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High Frequency Resonance Analysis and Resonance Suppression of a Grid-Connected Inverter Coupled With a Long Feeder

Cited by 5 publications

References 33 publications

Sequence-impedance-based modelling of grid-connected inverter considering AC-side and AC-DC frequency coupling effects

Sequence-impedance-based modelling of grid-connected inverter considering AC-side and AC-DC frequency coupling effects

DC Active Damper Control Strategy Based on Resonance Suppression Effectiveness Evaluation Method

The cascaded steady-state lumped parameter circuits for describing resonance characteristics of transmission lines

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