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Wide-Area Measurement-Based Voltage Stability Assessment by Coupled Single-Port Models

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Wide Area Power Systems Stability, Protection, and Security

Part of the book series: Power Systems ((POWSYS))

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Abstract

As the power system becomes more stressed and the penetration of intermittent renewable energies increase, voltage stability assessment (VSA) becomes a key concern for maintaining and enhancing the security of bulk power systems. Physically, the phenomenon of voltage instability is indeed caused by an uncontrollable drop in system voltage after being subjected to a disturbance. This deterioration may ultimately result in voltage collapse that has been responsible for several blackout incidents. So far, a vast number of methods ranging from simple static techniques to complex dynamic methods have been proposed for performing VSA. More recently, with wide deployment of synchronized phasor measurement units (PMUs), PMU-based wide area measurement system (WAMS) has attracted lots of interests from both academia and industry. In this chapter, recent developments of measurement-based coupled single-port models will be presented for VSA. Generally speaking, the concept of the coupled single-port model is to decouple a mesh power grid into several single-port local equivalent models with considering extra coupling impedances. By collecting real-time PMU measurements in each individual load bus, the reactive power response derived from the extended Ward-type equivalent model can be applied to eliminate the reactive power mismatch of the existing single-port model. Meanwhile, these parameters of the Thevenin equivalent circuit in the existing single-port model will be modified by a mitigation factor to improve the model accuracy of VSA. Since the proposed method is simple, several voltage stability indicators can be easily extended with slight modifications. Simulations are conducted on two test systems, including IEEE 57-bus and IEEE 118-bus test systems, to validate the accuracy of the proposed method.

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Author information

Authors and Affiliations

  1. Department of Electrical Engineering, Yuan Ze University, Taoyuan, Taiwan, 32003, Republic of China

    Jian-Hong Liu

  2. Department of Electrical Engineering, Feng Chia University, Taiwan, 40724, Taichung, Republic of China

    Heng-Yi Su

  3. Department of Electrical Engineering, National Tsing Hua University, Taiwan, 30013, Hsinchu, Republic of China

    Chia-Chi Chu

Authors
  1. Jian-Hong Liu
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  2. Heng-Yi Su
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  3. Chia-Chi Chu
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Correspondence to Jian-Hong Liu .

Editor information

Editors and Affiliations

  1. Department of Electrical Power Engineering, Tishreen University, Lattakia, Syrian Arab Republic

    Hassan Haes Alhelou

  2. Faculty of Engineering, Electrical Power & Machines Department, Ain Shams University, Cairo, Egypt

    Almoataz Y. Abdelaziz

  3. Department of Management & Innovation Systems, University of Salerno, Fisciano, Italy

    Pierluigi Siano

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Liu, JH., Su, HY., Chu, CC. (2021). Wide-Area Measurement-Based Voltage Stability Assessment by Coupled Single-Port Models. In: Haes Alhelou, H., Abdelaziz, A.Y., Siano, P. (eds) Wide Area Power Systems Stability, Protection, and Security. Power Systems. Springer, Cham. https://doi.org/10.1007/978-3-030-54275-7_12

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  • DOI: https://doi.org/10.1007/978-3-030-54275-7_12

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-54274-0

  • Online ISBN: 978-3-030-54275-7

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