An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames

Weihua Zhou*, Yanbo Wang, Zhe Chen

*Kontaktforfatter

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

State space model (SSM)-based eigenvalues analysis method has been widely used to analyze stability issue of power electronics-dominated power systems. One important advantage of it is to perform participation factor analysis, so oscillation source can be identified. However, the derivation procedure of SSM is complicated for large-scale power systems. Furthermore, it’s not easy to obtain system SSM due to unknown internal structure and parameters. This paper presents an incremental state space modelling method of power electronics-fed power system based on measured components impedance matrices on local dq frames. Terminal impedance frequency responses of all components are first measured by frequency scanning method on local dq frames. Then, SSMs of all components are fitted according to the measured dq impedance matrices by matrix fitting algorithm. Finally, SSM series operator and parallel operator are used to aggregate the fitted components SSMs in a recursive way. Simulation results show that the proposed incremental state space modelling method needs not know components internal information. In addition, dynamics of all components can be preserved in the established system SSM, while the information is lost in the existing dq impedance matrices aggregation method. The proposed incremental state space modelling method is also applicable for both mirror frequency decoupled system and mirror frequency coupled system.
OriginalsprogEngelsk
TitelProceedings of CIGRE Symposium Aalborg 2019
Antal sider15
ForlagCIGRE (International Council on Large Electric Systems)
Publikationsdatojun. 2019
StatusUdgivet - jun. 2019
BegivenhedCIGRE Symposium Aalborg 2019 - Aalborg, Danmark
Varighed: 4 jun. 20197 jun. 2019

Konference

KonferenceCIGRE Symposium Aalborg 2019
LandDanmark
ByAalborg
Periode04/06/201907/06/2019

Fingerprint

Power electronics
Mathematical operators
Mirrors
Factor analysis
Frequency response
Agglomeration
Scanning

Citer dette

Zhou, W., Wang, Y., & Chen, Z. (2019). An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames. I Proceedings of CIGRE Symposium Aalborg 2019 CIGRE (International Council on Large Electric Systems).
Zhou, Weihua ; Wang, Yanbo ; Chen, Zhe. / An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames. Proceedings of CIGRE Symposium Aalborg 2019. CIGRE (International Council on Large Electric Systems), 2019.
@inproceedings{9522687f936440d3901665de764d232d,
title = "An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames",
abstract = "State space model (SSM)-based eigenvalues analysis method has been widely used to analyze stability issue of power electronics-dominated power systems. One important advantage of it is to perform participation factor analysis, so oscillation source can be identified. However, the derivation procedure of SSM is complicated for large-scale power systems. Furthermore, it’s not easy to obtain system SSM due to unknown internal structure and parameters. This paper presents an incremental state space modelling method of power electronics-fed power system based on measured components impedance matrices on local dq frames. Terminal impedance frequency responses of all components are first measured by frequency scanning method on local dq frames. Then, SSMs of all components are fitted according to the measured dq impedance matrices by matrix fitting algorithm. Finally, SSM series operator and parallel operator are used to aggregate the fitted components SSMs in a recursive way. Simulation results show that the proposed incremental state space modelling method needs not know components internal information. In addition, dynamics of all components can be preserved in the established system SSM, while the information is lost in the existing dq impedance matrices aggregation method. The proposed incremental state space modelling method is also applicable for both mirror frequency decoupled system and mirror frequency coupled system.",
keywords = "DQ impedance matrix, Impedance aggregation, Matrix fitting algorithm, Stability analysis, State space model operator",
author = "Weihua Zhou and Yanbo Wang and Zhe Chen",
year = "2019",
month = "6",
language = "English",
booktitle = "Proceedings of CIGRE Symposium Aalborg 2019",
publisher = "CIGRE (International Council on Large Electric Systems)",

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Zhou, W, Wang, Y & Chen, Z 2019, An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames. i Proceedings of CIGRE Symposium Aalborg 2019. CIGRE (International Council on Large Electric Systems), CIGRE Symposium Aalborg 2019, Aalborg, Danmark, 04/06/2019.

An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames. / Zhou, Weihua; Wang, Yanbo; Chen, Zhe.

Proceedings of CIGRE Symposium Aalborg 2019. CIGRE (International Council on Large Electric Systems), 2019.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames

AU - Zhou, Weihua

AU - Wang, Yanbo

AU - Chen, Zhe

PY - 2019/6

Y1 - 2019/6

N2 - State space model (SSM)-based eigenvalues analysis method has been widely used to analyze stability issue of power electronics-dominated power systems. One important advantage of it is to perform participation factor analysis, so oscillation source can be identified. However, the derivation procedure of SSM is complicated for large-scale power systems. Furthermore, it’s not easy to obtain system SSM due to unknown internal structure and parameters. This paper presents an incremental state space modelling method of power electronics-fed power system based on measured components impedance matrices on local dq frames. Terminal impedance frequency responses of all components are first measured by frequency scanning method on local dq frames. Then, SSMs of all components are fitted according to the measured dq impedance matrices by matrix fitting algorithm. Finally, SSM series operator and parallel operator are used to aggregate the fitted components SSMs in a recursive way. Simulation results show that the proposed incremental state space modelling method needs not know components internal information. In addition, dynamics of all components can be preserved in the established system SSM, while the information is lost in the existing dq impedance matrices aggregation method. The proposed incremental state space modelling method is also applicable for both mirror frequency decoupled system and mirror frequency coupled system.

AB - State space model (SSM)-based eigenvalues analysis method has been widely used to analyze stability issue of power electronics-dominated power systems. One important advantage of it is to perform participation factor analysis, so oscillation source can be identified. However, the derivation procedure of SSM is complicated for large-scale power systems. Furthermore, it’s not easy to obtain system SSM due to unknown internal structure and parameters. This paper presents an incremental state space modelling method of power electronics-fed power system based on measured components impedance matrices on local dq frames. Terminal impedance frequency responses of all components are first measured by frequency scanning method on local dq frames. Then, SSMs of all components are fitted according to the measured dq impedance matrices by matrix fitting algorithm. Finally, SSM series operator and parallel operator are used to aggregate the fitted components SSMs in a recursive way. Simulation results show that the proposed incremental state space modelling method needs not know components internal information. In addition, dynamics of all components can be preserved in the established system SSM, while the information is lost in the existing dq impedance matrices aggregation method. The proposed incremental state space modelling method is also applicable for both mirror frequency decoupled system and mirror frequency coupled system.

KW - DQ impedance matrix

KW - Impedance aggregation

KW - Matrix fitting algorithm

KW - Stability analysis

KW - State space model operator

M3 - Article in proceeding

BT - Proceedings of CIGRE Symposium Aalborg 2019

PB - CIGRE (International Council on Large Electric Systems)

ER -

Zhou W, Wang Y, Chen Z. An Incremental State Space Modelling Method of Power Systems Based on Measured Components Impedance Matrices in Local dq Frames. I Proceedings of CIGRE Symposium Aalborg 2019. CIGRE (International Council on Large Electric Systems). 2019