A Comprehensive Framework for Robust AC/DC Grid State Estimation Against Measurement and Control Input Errors

Zhi Fang; Yuzhang Lin; Shaojian Song; Chi Li; Xiaofeng Lin; Fei Wang; Yimin Lu

doi:10.1109/TPWRS.2021.3105391

A Comprehensive Framework for Robust AC/DC Grid State Estimation Against Measurement and Control Input Errors

Zhi Fang, Yuzhang Lin, Shaojian Song, Chi Li, Xiaofeng Lin, Fei Wang, Yimin Lu

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Thispaper proposes a systematic framework of the AC/DC grid state estimation with high accuracy, computational tractability, and robustness against measurement and control input errors. First, tractable lossy models of bidirectional isolated DC/DC voltage source converters (VSCs), bidirectional DC/AC VSCs, and DC lines for state estimation are developed. Then, the state variables of the DC grid are selected, and measurement equations are derived. Finally, combined with the state estimation model of AC grids, a general framework for the robust AC/DC transmission grid state estimation against both measurement errors and control input errors is presented. Simulation results show that the proposed framework can effectively capture the operating state of the AC/DC grid, and suppress the impact of simultaneous measurement errors and control input errors.

Original language	English (US)
Pages (from-to)	1067-1077
Number of pages	11
Journal	IEEE Transactions on Power Systems
Volume	37
Issue number	2
DOIs	https://doi.org/10.1109/TPWRS.2021.3105391
State	Published - Mar 1 2022

Keywords

AC/DC grid
robustness
state estimation
voltage source converters

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/TPWRS.2021.3105391

Cite this

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title = "A Comprehensive Framework for Robust AC/DC Grid State Estimation Against Measurement and Control Input Errors",

abstract = "Thispaper proposes a systematic framework of the AC/DC grid state estimation with high accuracy, computational tractability, and robustness against measurement and control input errors. First, tractable lossy models of bidirectional isolated DC/DC voltage source converters (VSCs), bidirectional DC/AC VSCs, and DC lines for state estimation are developed. Then, the state variables of the DC grid are selected, and measurement equations are derived. Finally, combined with the state estimation model of AC grids, a general framework for the robust AC/DC transmission grid state estimation against both measurement errors and control input errors is presented. Simulation results show that the proposed framework can effectively capture the operating state of the AC/DC grid, and suppress the impact of simultaneous measurement errors and control input errors.",

keywords = "AC/DC grid, robustness, state estimation, voltage source converters",

author = "Zhi Fang and Yuzhang Lin and Shaojian Song and Chi Li and Xiaofeng Lin and Fei Wang and Yimin Lu",

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AU - Fang, Zhi

AU - Lin, Yuzhang

AU - Song, Shaojian

AU - Li, Chi

AU - Lin, Xiaofeng

AU - Wang, Fei

AU - Lu, Yimin

PY - 2022/3/1

Y1 - 2022/3/1

N2 - Thispaper proposes a systematic framework of the AC/DC grid state estimation with high accuracy, computational tractability, and robustness against measurement and control input errors. First, tractable lossy models of bidirectional isolated DC/DC voltage source converters (VSCs), bidirectional DC/AC VSCs, and DC lines for state estimation are developed. Then, the state variables of the DC grid are selected, and measurement equations are derived. Finally, combined with the state estimation model of AC grids, a general framework for the robust AC/DC transmission grid state estimation against both measurement errors and control input errors is presented. Simulation results show that the proposed framework can effectively capture the operating state of the AC/DC grid, and suppress the impact of simultaneous measurement errors and control input errors.

AB - Thispaper proposes a systematic framework of the AC/DC grid state estimation with high accuracy, computational tractability, and robustness against measurement and control input errors. First, tractable lossy models of bidirectional isolated DC/DC voltage source converters (VSCs), bidirectional DC/AC VSCs, and DC lines for state estimation are developed. Then, the state variables of the DC grid are selected, and measurement equations are derived. Finally, combined with the state estimation model of AC grids, a general framework for the robust AC/DC transmission grid state estimation against both measurement errors and control input errors is presented. Simulation results show that the proposed framework can effectively capture the operating state of the AC/DC grid, and suppress the impact of simultaneous measurement errors and control input errors.

KW - AC/DC grid

KW - robustness

KW - state estimation

KW - voltage source converters

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A Comprehensive Framework for Robust AC/DC Grid State Estimation Against Measurement and Control Input Errors

Abstract

Keywords

ASJC Scopus subject areas

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