Modal analysis of power systems to mitigate harmonic resonance considering load models

Esmaili, Masoud; Shayanfar, Heidar Ali; Jalilian, Alireza

doi:10.1016/j.energy.2008.05.005

Cited by 18 publications

(4 citation statements)

References 10 publications

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“…4, for a system with N independent nodes, the number of ports for the series resonance of the branch is 2N -2. When the system is a ring network, the amount of the ports is 2(N -1) ~ 2C 2 N because the amount of branches is (N -1) ~ C 2 N in a ring network with N independent nodes. If the non-reference node is used as the research objective, the amount of ports for the series resonance of the branch is N * (N -1)/2.…”

Section: Discussionmentioning

confidence: 99%

Recognition of Branch Series Resonance Based on Port Equivalent Method

Liu

et al. 2019

CPSS TPEA

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For the identification of series resonance in power system branches, the identification method of branch series resonance based on port equivalent method is proposed. First of all, a typical three-bus test system is used to analyze the series resonance of the branch. It is found that the branch series resonance can be identified by the port equivalent admittance formed between the bus node and the reference node. Then, by establishing the node port association matrix and using the node impedance matrix, the multi-port Thevenin equivalent impedance matrix is obtained, in other words, the equivalent admittance matrix of the port is formed, and the load branch of the node is eliminated, as well as the effect of the node load branch on the series resonance of the identification branch is eliminated. The algorithm effectively utilizes the node admittance matrix commonly used in power system. Finally, the feasibility and correctness of the three-bus system and IEEE9 network system are proved by simulation analysis. The validity of this novel formulation is confirmed through theoretical analysis and case studies.

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Section: Discussionmentioning

confidence: 99%

Recognition of Branch Series Resonance Based on Port Equivalent Method

Liu

et al. 2019

CPSS TPEA

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“…is called modal impedance matrix [44]. The mode with the eigenvalue closer to zero corresponds to a high modal impedance and is known as the critical mode and thus the frequency corresponding to this mode is called the resonance frequency.…”

Section: Harmonic Resonance Mode Analysismentioning

confidence: 99%

“…Traditionally, there are two resonance identification techniques: the first one is frequency scan (FS) analysis that is used to identify the resonance frequencies and the second one is harmonic resonance mode analysis (HRMA) approach that is used to calculate the harmonic resonance modes related of different network buses [15][16][17][18][19]. These two methods together provide a comprehensive understanding of the resonance frequencies and their centers in the network.…”

mentioning

confidence: 99%

Mathematical modeling of PMSG-based wind power plants (WPPs) for harmonic resonance studies and analytical assessment of wind turbines converters controls on WPP harmonic resonance response

Beiki

Rahimi

2021

Scientia Iranica

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In this paper harmonic resonance analysis of the grid comprising wind power plants (WPPs) with permanent magnet synchronous generators (PMSGs) is presented. Usually, Norton equivalent circuit is used as the wind turbine (WT) model for harmonic resonance studies, in which, WTs are simply modeled as ideal current and voltage sources and impacts of converters controls on the WTs output impedances are neglected. This paper deals with the harmonic resonance analysis of study WPP system taking the impacts of converters controls, and current and voltage measurement filters into account. In this way, harmonic impedance models of the WTs are presented for simple and detailed cases, and then WT harmonic impedance is extracted for the mentioned cases. Next, results of frequency scan and harmonic mode resonance analyses for different cases are given and compared, and then effects of the current and voltage measurements filters and WT converter control on harmonic resonance analysis of the study WPP system are presented. It is shown that increasing the bandwidth of the grid-side converter current control loop can not shift the resonant frequencies, but enhances the system damping, and consequently reduces the driving point impedances in the resonant frequencies.

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“…It can indicate the origin of a given resonance mode. Furthermore, using the sensitivity analysis [4], [5], mitigation action such as filter design can be carried out [6]. HRMA has been shown to be suitable for both small and large power systems [3].…”

Section: Introductionmentioning

confidence: 99%

Harmonic Resonance Mode Analysis in dq Domain

Taffese¹,

Tedeschi²

2024

RE&PQJ

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Abstract-Harmonic Resonance Mode Analysis (HRMA) is a technique developed to study harmonic resonance in a power system. Compared to conventional resonance analysis techniques, HRMA is a powerful method that can indicate the origin and the locations most affected by a given mode of resonance. The method has been shown to be effective for large scale resonance studies. However, very simplified models are used for representing power converters. With the proliferation of power converter interfaced energy sources in the future power system, there is a need to correctly model power converters in such studies. The main challenge is to correctly represent the control loops. The controllers are mostly designed in dq domain while the study is performed in phase domain. To address this problem, this paper proposes extension of HRMA to dq domain. Formulation of the problem in dq domain is presented in detail followed by verification using simple test cases. A detailed model of a voltage source converter for the aforementioned analysis is also developed and analysed using the test cases.

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Modal analysis of power systems to mitigate harmonic resonance considering load models

Cited by 18 publications

References 10 publications

Recognition of Branch Series Resonance Based on Port Equivalent Method

Recognition of Branch Series Resonance Based on Port Equivalent Method

Mathematical modeling of PMSG-based wind power plants (WPPs) for harmonic resonance studies and analytical assessment of wind turbines converters controls on WPP harmonic resonance response

Harmonic Resonance Mode Analysis in dq Domain

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