Stability Analysis of SSR in Multiple Wind Farms Connected to Series-Compensated Systems Using Impedance Network Model

Liu, Huan; Xie, Xiaorong; Gao, Xiaodan; Liu, Hui; Li, Yunhong

doi:10.1109/tpwrs.2017.2764159

Cited by 152 publications

(59 citation statements)

References 33 publications

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“…Content may change prior to final publication. Citation information: DOI 10.1109/TPEL.2020.2998702, IEEE Transactions on Power Electronics IEEE POWER ELECTRONICS REGULAR PAPER aggregation theory [48,49], at bus-2, the equivalent impedance of the load modulus can be aggregated as follows:…”

Section: Mechanism and Influential Factors Of Lfomentioning

confidence: 99%

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

Zhou

et al. 2021

IEEE Trans. Power Electron.

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The wide adoption of a new type of electric trains results in multiple frequency-scale instability problems, such as low-frequency oscillation (LFO), harmonic resonance and harmonic instability. Among them, LFO has been commonly reported at electric railway depots with multiple-energized electric trains around the whole world, thus attracting widespread research attention. LFOs cause adverse effects on the system stability and protection infrastructure of both the traction network and electric trains. This paper presents a comprehensive review of LFOs that consider both academic theoretical analysis and industrial engineering requirements. A unified mathematical model of the traction network and electric train is derived with a view to revealing the mechanism and factors that induce LFOs when these two systems interact. The study also draws deep insights from results of experimental measurements and industrial mitigation schemes already implemented in Chinese railway systems. A variety of mitigation techniques and recommendations based on theoretical principles and practical constraints are presented.

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Section: Mechanism and Influential Factors Of Lfomentioning

confidence: 99%

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

Zhou

et al. 2021

IEEE Trans. Power Electron.

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“…Since the interrelation of different parameters has already been described in the field of RF/Microwave [25], the ABCD-to-S-parameter conversion depicted in (52) in Appendix VI-B is then applied to the transmission line model in (17), and Z 0 = Z C is selected, where the S-parameter representation of the transmission line model is derived as…”

Section: ) Incident and Reflected Power Wavesmentioning

confidence: 99%

“…Yet, the system needs to be partitioned into multiple Z + Z or Z + Y subsystems to perform the stability analysis [16]. On the other hand, the impedance-sum based analysis method has been developed in the wind power system for analyzing the stability at a specified bus by partitioning the system into the corresponding impedance network model [17]. Both methods require the prior knowledge of the system in order to properly partition the system into subsystems.…”

Section: Introductionmentioning

confidence: 99%

Reflection Coefficient Stability Criterion for Multi-Bus Multi-VSC Power Systems

2020

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This paper proposes a reflection coefficient stability criterion for multi-bus power systems with multiple voltage-source converters (VSCs). In the method, VSCs are modeled as two-port networks, which are then characterized by the incident and reflected power waves, as well as their ratios, i.e. reflection coefficients. Two superior features over the impedance-based stability analysis are provided, which are no need for system partitioning to avoid unstable subsystems, and the identification of relative stability and the critically oscillating frequency at each bus of the power system. Case studies with experimental results demonstrate the effectiveness of the approach.

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“…In this method, a wind generator can be simplified as an input-impedance by the derivation of the terminal current change with respect to the voltage change through a small-signal-analysis method. Then the SSO stability can be easily analysed by classical control theory methods such as the root locus method and the Nyquist criterion method [9]- [12]. One study [9] proposed an SSR stability analysis method based on an impedance network model.…”

Section: Introductionmentioning

confidence: 99%

“…Then the SSO stability can be easily analysed by classical control theory methods such as the root locus method and the Nyquist criterion method [9]- [12]. One study [9] proposed an SSR stability analysis method based on an impedance network model. The impedance models of each wind farm and transmission line are established, and then interconnected according to the system topology to form the whole impedance network model, which is further aggregated into the lumped impedance.…”

Section: Introductionmentioning

confidence: 99%

Subsynchronous Oscillation Analysis of Grid-Connected Converter Based on MIMO Transfer Functions

Zhang

Yuan

et al. 2020

IEEE Access

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Subsynchronous oscillations (SSOs) induced by the interaction between wind farms based on direct-drive permanent magnet synchronous generators (D-PMSGs) and weak grids have attracted extensive attention. To better understand this SSO phenomenon, this paper derives multi-input multi-output (MIMO) transfer functions between the references of the current controller and the current of a grid-connected converter in the d-q frame, where the dynamic of PLL is considered. The dynamic of PLL lead to positive feedback in the MIMO transfer function, which impairs the stability of the overall system and induces the SSO phenomenon. Using the classical root locus method, the influence of correlated control parameters and different operation conditions on the system stability is substantially analysed. It is found that heavy load, low short circuit ratio (SCR) will intensify the SSO instability of system. Nonlinear electromagnetic transient simulations of a D-PMSG-based weak-grid-connected wind-farm system using PSCAD/EMTDC software effectively verify the correctness of the model proposed in the SSO analysis.

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Stability Analysis of SSR in Multiple Wind Farms Connected to Series-Compensated Systems Using Impedance Network Model

Cited by 152 publications

References 33 publications

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

Low-Frequency Oscillation in Electric Railway Depot: A Comprehensive Review

Reflection Coefficient Stability Criterion for Multi-Bus Multi-VSC Power Systems

Subsynchronous Oscillation Analysis of Grid-Connected Converter Based on MIMO Transfer Functions

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