PMU-Based Distributed Non-Iterative Algorithm for Real-Time Voltage Stability Monitoring

The Phasor measurement unit (PMU) measurements are mandatory to monitor the power system's voltage stability margin in an online manner. Monitoring is key to the secure operation of the grid. Traditionally, online monitoring of voltage stability using synchrophasors required a centralized commu...

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Veröffentlicht in:	IEEE transactions on smart grid Jg. 11; H. 6; S. 5203 - 5215
Hauptverfasser:	Guddanti, Kishan Prudhvi, Matavalam, Amarsagar Reddy Ramapuram, Weng, Yang
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Piscataway IEEE 01.11.2020 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:	Communication Communications systems Cybersecurity Flow equations Flow stability Indexes Investment Iterative algorithms Iterative methods Mathematical model Measuring instruments Monitoring Phasor measurement units Phasors Power flow Power system stability Real time Smart grid Stability criteria voltage collapse Voltage measurement Voltage stability wide-area monitoring and control
ISSN:	1949-3053, 1949-3061
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Abstract	The Phasor measurement unit (PMU) measurements are mandatory to monitor the power system's voltage stability margin in an online manner. Monitoring is key to the secure operation of the grid. Traditionally, online monitoring of voltage stability using synchrophasors required a centralized communication architecture, which leads to the high investment cost and cyber-security concerns. The increasing importance of cyber-security and low investment costs have recently led to the development of distributed algorithms for online monitoring of the grid that are inherently less prone to malicious attacks. In this work, we proposed a novel distributed non-iterative voltage stability index (VSI) by recasting the power flow equations as circles. The processors embedded at each bus in the smart grid with the help of PMUs and communication of voltage phasors between neighboring buses perform simultaneous online computations of VSI. The distributed nature of the index enables the real-time identification of the critical bus of the system with minimal communication infrastructure. The effectiveness of the proposed distributed index is demonstrated on IEEE test systems and contrasted with existing methods to show the benefits of the proposed method in speed, interpretability, identification of outage location, and low sensitivity to noisy measurements.
AbstractList	The Phasor measurement unit (PMU) measurements are mandatory to monitor the power system’s voltage stability margin in an online manner. Monitoring is key to the secure operation of the grid. Traditionally, online monitoring of voltage stability using synchrophasors required a centralized communication architecture, which leads to the high investment cost and cyber-security concerns. The increasing importance of cyber-security and low investment costs have recently led to the development of distributed algorithms for online monitoring of the grid that are inherently less prone to malicious attacks. In this work, we proposed a novel distributed non-iterative voltage stability index (VSI) by recasting the power flow equations as circles. The processors embedded at each bus in the smart grid with the help of PMUs and communication of voltage phasors between neighboring buses perform simultaneous online computations of VSI. The distributed nature of the index enables the real-time identification of the critical bus of the system with minimal communication infrastructure. The effectiveness of the proposed distributed index is demonstrated on IEEE test systems and contrasted with existing methods to show the benefits of the proposed method in speed, interpretability, identification of outage location, and low sensitivity to noisy measurements.
Author	Guddanti, Kishan Prudhvi Matavalam, Amarsagar Reddy Ramapuram Weng, Yang
Author_xml	– sequence: 1 givenname: Kishan Prudhvi orcidid: 0000-0002-0041-8584 surname: Guddanti fullname: Guddanti, Kishan Prudhvi email: kguddant@asu.edu organization: School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, USA – sequence: 2 givenname: Amarsagar Reddy Ramapuram orcidid: 0000-0001-5960-6355 surname: Matavalam fullname: Matavalam, Amarsagar Reddy Ramapuram email: amar@iastate.edu organization: Department of Electrical and Computer Engineering, Iowa State University, Ames, IA, USA – sequence: 3 givenname: Yang orcidid: 0000-0002-5267-1303 surname: Weng fullname: Weng, Yang email: yang.weng@asu.edu organization: School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, USA
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Cites_doi	10.1016/0378-7796(94)00893-9 10.1109/TSG.2016.2533319 10.1109/TPWRS.2009.2023272 10.1109/TPWRS.2011.2154366 10.1109/NAPS46351.2019.9000335 10.1109/APSITT.2005.203634 10.1109/TPWRS.2011.2120631 10.1049/iet-gtd.2017.1029 10.1109/JPROC.2005.846336 10.1109/PESGM.2016.7741972 10.1109/TPWRD.2003.817725 10.1109/TPWRS.2010.2051168 10.1109/TSG.2019.2926668 10.1109/TPWRS.2017.2701811 10.1109/TPWRS.2013.2284475 10.1109/67.207465 10.1109/TENCONSpring.2013.6584419 10.1049/ip-c.1992.0037 10.1109/TCOM.1964.1088883 10.1016/j.ijepes.2016.03.044 10.1109/MPAE.2008.4412940 10.1109/TCNS.2015.2459391 10.1109/TPWRS.2009.2023271 10.1109/CDC.2011.6160431 10.1007/978-0-387-75536-6 10.1109/TIE.2015.2436879 10.1109/59.317656 10.1109/PESMG.2013.6672947 10.1109/TCNS.2015.2399192 10.1109/59.780916 10.1109/PESGM.2017.8273974 10.1109/TPWRD.2004.824763 10.1109/TPWRS.2002.805018 10.1109/81.128018 10.1109/TSG.2015.2388777 10.1109/TPWRD.2015.2403591 10.1007/978-0-387-32935-2 10.1109/TSG.2019.2933629 10.1109/59.387918 10.1109/PESS.2000.867642 10.1109/TPAS.1981.316511 10.1109/TPWRS.2008.922586 10.1109/TPWRD.1986.4308013 10.1109/TSG.2014.2363192 10.23919/PSCC.2018.8442776
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Snippet	The Phasor measurement unit (PMU) measurements are mandatory to monitor the power system's voltage stability margin in an online manner. Monitoring is key to... The Phasor measurement unit (PMU) measurements are mandatory to monitor the power system’s voltage stability margin in an online manner. Monitoring is key to...
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SubjectTerms	Communication Communications systems Cybersecurity Flow equations Flow stability Indexes Investment Iterative algorithms Iterative methods Mathematical model Measuring instruments Monitoring Phasor measurement units Phasors Power flow Power system stability Real time Smart grid Stability criteria voltage collapse Voltage measurement Voltage stability wide-area monitoring and control
Title	PMU-Based Distributed Non-Iterative Algorithm for Real-Time Voltage Stability Monitoring
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