Real-time monitoring of critical nodes with minimal number of Phasor Measurement Units

Thukaram, D; Ravikumr, B.; Kumar, Vishal; Rao, Y. Prasad; Surendra, S; Kolla, Sri R.

doi:10.1109/icpws.2009.5442648

Cited by 10 publications

(11 citation statements)

References 6 publications

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“…The maximum transferable power S max through the transmission line has been achieved when the internal root phrase equals to zero [14]. There is only one possible solution for V s , and the receiving end voltage, V r , is at the marginally stable operating point.…”

Section: G Online Voltage Stability Indexmentioning

confidence: 99%

Real-time voltage stability monitoring and evaluation using synchorophasors

Salehi

Mohammed

2011

2011 North American Power Symposium

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This paper focuses on evaluating online voltage stability indices for an interconnected power system. The voltage stability indices are measured during the operation of the power system when the dynamic changes take places. The evaluation of the stability and security indices were performed by simulation and measurement of real-time data using Phasor Measurement Units (PMUs). The evaluation of the dynamic voltage stability indices were performed by creating dynamic load step change in both simulation and implementation at the library scale power system testing environment. The developed simulation involved the modeling of transmission line emulators with a pi structure. Monitoring software was developed and implemented for wide area control and monitoring system on the laboratory power system test-bed. The formulation of the various indices includes: fast voltage stability, line stability and load margin in addition to sensitivity of voltage variation to load changes. Simulation results were verified with measured and monitored data. A good agreement was achieved indicates the validity of the implemented procedure.

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Section: G Online Voltage Stability Indexmentioning

confidence: 99%

Real-time voltage stability monitoring and evaluation using synchorophasors

Salehi

Mohammed

2011

2011 North American Power Symposium

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“…The maximum transferable power S max through the transmission line has been achieved when the internal root phrase equals to zero [94] …”

Section: Applications Of Pmus In Power Systemmentioning

confidence: 99%

“…Furthermore, it can be used to recognize weak buses and the highly risky areas involved in the voltage instability. In this study, several voltage stability indices which are developed in literature [94]- [97], [120]- [126] are presented in Table 5.1. They are used to monitor online voltage stability margins in power system using PMUs.…”

Section: Real-time Voltage Stability Monitoringmentioning

confidence: 99%

“…PMUs around the grid is required to apply corrective control actions for stabilization of large power system [94].…”

Section: Applications Of Pmus In Power Systemmentioning

confidence: 99%

“…Voltage collapse typically occurs right after an event which causes one of the conditions and it may last in time frames of a few seconds to several minutes, but rarely hours [119]. Many indices were developed to detect the voltage stability in a static security-stability assessment manner [94]- [97], [114], [120]- [126].…”

Section: Real-time Voltage Stability Monitoringmentioning

confidence: 99%

See 2 more Smart Citations

Development and Verification of Control and Protection Strategies in Hybrid AC/DC Power Systems for Smart Grid Applications

Mehr¹

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Linear programming approach for state estimation incorporating phasor measurements

Kumar

Thukaram

2011

2011 International Conference on Power and Energy Systems

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This paper presents methodologies for incorporating phasor measurements into conventional state estimator. The angle measurements obtained from Phasor Measurement Units are handled as angle difference measurements rather than incorporating the angle measurements directly. Handling in such a manner overcomes the problems arising due to the choice of reference bus. Current measurements obtained from Phasor Measurement Units are treated as equivalent pseudo-voltage measurements at the neighboring buses. Two solution approaches namely normal equations approach and linear programming approach are presented to show how the Phasor Measurement Unit measurements can be handled. Comparative evaluation of both the approaches is also presented. Test results on IEEE 14 bus system are presented to validate both the approaches.978-1-4577-1510-5/11/$26.00 c 2011 IEEE

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Real-time monitoring of critical nodes with minimal number of Phasor Measurement Units

Cited by 10 publications

References 6 publications

Real-time voltage stability monitoring and evaluation using synchorophasors

Real-time voltage stability monitoring and evaluation using synchorophasors

Development and Verification of Control and Protection Strategies in Hybrid AC/DC Power Systems for Smart Grid Applications

Linear programming approach for state estimation incorporating phasor measurements

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