Multiport Frequency-Dependent Network Equivalent Using a Modified Matrix Pencil Method

Sheshyekani, Keyhan; Tabei, Barzan

doi:10.1109/tpwrd.2014.2323335

Cited by 25 publications

(16 citation statements)

References 28 publications

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“…These algorithms can provide near-optimal solutions to difficult optimization problems by means of their reproduction operators which are employed for moving the population towards the better solution zones of search space [44]. Some other approaches using matrix pencil and vector fitting methods are also proposed in the literature to approximate for some frequency domain responses using rational function fitting techniques [46][47][48][49]. Because our work is based on practical channel measurements rather than determining frequency domain responses, the ABC algorithm is selected to model the indoor PLC channels for Turkey.…”

Section: Introductionmentioning

confidence: 99%

Artificial bee colony optimization for modelling of indoor PLC channels: A case study from Turkey

Develı

Kabalcı

Baştürk

2015

Electric Power Systems Research

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Section: Introductionmentioning

confidence: 99%

Artificial bee colony optimization for modelling of indoor PLC channels: A case study from Turkey

Develı

Kabalcı

Baştürk

2015

Electric Power Systems Research

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“…Vector fitting is found to be the most used method to construct the rational model. The proposed modified matrix pencil method iteratively relocates the initial set of poles in the multi-port frequency dependent network equivalent [33]. However, it is challenging to include the frequency-domain rational function models in EMT programs, which has been addressed in [34], where both active and passive behavior of the external system has been considered.…”

Section: ) Frequency-dependent Network Equivalentmentioning

confidence: 99%

Review of Methods to Accelerate Electromagnetic Transient Simulation of Power Systems

et al. 2021

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Converter-based generators are increasingly replacing classical synchronous generation, resulting in significant challenges to the operation and planning of modern power systems. Power electronics (PE)-based equipment, along with non-linear PE-driven loads, introduce time-varying characteristics and fast switching behavior that increases the complexity of the power system model. Faster control actions are needed to overcome the fast switching dynamics to ensure the reliability and stability of future power systems. Thus, this requires advanced and detailed simulation methods and tools with highly accurate equivalent models to embody the relatively slower electromechanical to faster electromagnetic transient (EMT) phenomena. Conventional transient stability analysis using positive-sequence simulators has become inadequate for representing converter-dominated power systems, while EMT simulators suffer from the high computational burden. This review paper presents accelerated EMT simulation methods and tools that are categorized and discussed in three topics: system equivalents, simulation methods, and accelerating tools. Dynamic system equivalent techniques are discussed to model small to large interconnected external systems of the grid network. Moreover, a systematic review is made for existing EMT simulation methods, along with advanced co-simulation methods, for addressing simulation speed and accuracy issues in large power system networks. Emerging hardware-based simulation tools are reviewed that reduce the computational burden and increase the simulation efficiency of the power system model. Challenges and trends in EMT simulation are also presented and concluded by providing perspectives on this research topic.

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“…According to References 7 and 12 when the frequency sampling is performed in the multiport frequency‐dependent system, the sampling data of different ports at different frequencies can be expressed as.

y_{ij} ((), s) \approx ({}, y_{ij} {(s)}_{fit}) = \sum_{n = 1}^{N} \frac{R_{n, ij}}{s - a_{n}} + d_{ij} + s e_{ij}, i, j = 1, 2, \dots, P,

where P is the number of the port (as shown in Figure 1).…”

Section: Time‐domain Analysis In the Mpm Fitting Processmentioning

confidence: 99%

“…Therefore, it is necessary to analyze all ports as a whole. To achieve the equivalent of this multiport frequency‐dependent system, the MPM with common poles is proposed by Sheshyekani 12 . In this method, a vector is obtained by superimposing the sampling data of all ports at each sampling frequency, and its time‐domain version is generated through IFFT.…”

Section: Introductionmentioning

confidence: 99%

Time‐domain analysis of parameters in the fitting of multiport frequency‐dependent system through matrix pencil method

Zhang

Liao

Shang

et al. 2021

Micro & Optical Tech Letters

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In this letter, in this process of using matrix pencil method (MPM) to perform the equivalent of the multiport frequency‐dependent system, a modified MPM is proposed to realize the solutions of common poles and residue matrix in time domain. In this technique, the frequency domain data of all ports are transformed into the time domain matrix vectors by IFFT. Then, the time domain matrix vectors are superimposed into a single vector, which is analyzed by the MPM to generate a common set of poles. The residue matrix is obtained by using the least square method to solve the equation consisting of the common poles and the time domain matrix vectors. The fast evaluation of the frequency domain data of the multiport frequency‐dependent system can be thus completed by the common poles and residue matrix. Finally, the correctness of the proposed method is verified by a three‐conductor transmission lines system.

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Multiport Frequency-Dependent Network Equivalent Using a Modified Matrix Pencil Method

Cited by 25 publications

References 28 publications

Artificial bee colony optimization for modelling of indoor PLC channels: A case study from Turkey

Artificial bee colony optimization for modelling of indoor PLC channels: A case study from Turkey

Review of Methods to Accelerate Electromagnetic Transient Simulation of Power Systems

Time‐domain analysis of parameters in the fitting of multiport frequency‐dependent system through matrix pencil method

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