Impedance-Decoupled Modelling Method of Multi-Port Transmission Network in Inverter-Fed Power Plant

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This paper presents an impedance-decoupled modelling method of multi-port transmission network in inverter-fed power plant, which is able to simplify modelling and stability analysis procedure for power plant with complicated transmission network. Impedance-decoupled models of three-port and four-port transmission networks are first established. On the basis of them, impedance-decoupled model of multi-port transmission network is derived, where transmission node with multiple branches is modelled by means of Norton equivalent circuit. Furthermore, based on the proposed impedance-decoupled network modelling method, the whole power plant is divided into multiple subsystems, and Nyquist stability criterion is performed for all subsystems, where oscillation source can be identified in an explicit way. Simulation and experimental results are given to validate effectiveness of the proposed impedance-decoupled modelling and stability analysis method. The proposed modelling method is able to simplify modelling procedure of large-scale power plant with complicated transmission network, which is also applicable in power plant with various transmission network topologies.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Industry Applications
ISSN0093-9994
StatusE-pub ahead of print - 2020

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Electric power transmission networks
Power plants
Stability criteria
Equivalent circuits
Topology

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@article{ca5713825850420e860ea6d7836ca99d,
title = "Impedance-Decoupled Modelling Method of Multi-Port Transmission Network in Inverter-Fed Power Plant",
abstract = "This paper presents an impedance-decoupled modelling method of multi-port transmission network in inverter-fed power plant, which is able to simplify modelling and stability analysis procedure for power plant with complicated transmission network. Impedance-decoupled models of three-port and four-port transmission networks are first established. On the basis of them, impedance-decoupled model of multi-port transmission network is derived, where transmission node with multiple branches is modelled by means of Norton equivalent circuit. Furthermore, based on the proposed impedance-decoupled network modelling method, the whole power plant is divided into multiple subsystems, and Nyquist stability criterion is performed for all subsystems, where oscillation source can be identified in an explicit way. Simulation and experimental results are given to validate effectiveness of the proposed impedance-decoupled modelling and stability analysis method. The proposed modelling method is able to simplify modelling procedure of large-scale power plant with complicated transmission network, which is also applicable in power plant with various transmission network topologies.",
keywords = "Impedance-based stability analysis, impedance-decoupled modelling, inverter-fed power plant, Nyquist stability criterion, oscillation source identification, transmission network",
author = "Weihua Zhou and Yanbo Wang and Zhe Chen",
year = "2020",
language = "English",
journal = "I E E E Transactions on Industry Applications",
issn = "0093-9994",
publisher = "IEEE",

}

TY - JOUR

T1 - Impedance-Decoupled Modelling Method of Multi-Port Transmission Network in Inverter-Fed Power Plant

AU - Zhou, Weihua

AU - Wang, Yanbo

AU - Chen, Zhe

PY - 2020

Y1 - 2020

N2 - This paper presents an impedance-decoupled modelling method of multi-port transmission network in inverter-fed power plant, which is able to simplify modelling and stability analysis procedure for power plant with complicated transmission network. Impedance-decoupled models of three-port and four-port transmission networks are first established. On the basis of them, impedance-decoupled model of multi-port transmission network is derived, where transmission node with multiple branches is modelled by means of Norton equivalent circuit. Furthermore, based on the proposed impedance-decoupled network modelling method, the whole power plant is divided into multiple subsystems, and Nyquist stability criterion is performed for all subsystems, where oscillation source can be identified in an explicit way. Simulation and experimental results are given to validate effectiveness of the proposed impedance-decoupled modelling and stability analysis method. The proposed modelling method is able to simplify modelling procedure of large-scale power plant with complicated transmission network, which is also applicable in power plant with various transmission network topologies.

AB - This paper presents an impedance-decoupled modelling method of multi-port transmission network in inverter-fed power plant, which is able to simplify modelling and stability analysis procedure for power plant with complicated transmission network. Impedance-decoupled models of three-port and four-port transmission networks are first established. On the basis of them, impedance-decoupled model of multi-port transmission network is derived, where transmission node with multiple branches is modelled by means of Norton equivalent circuit. Furthermore, based on the proposed impedance-decoupled network modelling method, the whole power plant is divided into multiple subsystems, and Nyquist stability criterion is performed for all subsystems, where oscillation source can be identified in an explicit way. Simulation and experimental results are given to validate effectiveness of the proposed impedance-decoupled modelling and stability analysis method. The proposed modelling method is able to simplify modelling procedure of large-scale power plant with complicated transmission network, which is also applicable in power plant with various transmission network topologies.

KW - Impedance-based stability analysis

KW - impedance-decoupled modelling

KW - inverter-fed power plant

KW - Nyquist stability criterion

KW - oscillation source identification

KW - transmission network

M3 - Journal article

JO - I E E E Transactions on Industry Applications

JF - I E E E Transactions on Industry Applications

SN - 0093-9994

ER -