GECM-Based Voltage Stability Assessment Using Wide-Area Synchrophasors

Su, Heng-Yi; Liu, Tzu-Yi

doi:10.3390/en10101601

Cited by 4 publications

(3 citation statements)

References 28 publications

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“…To consider the limits violation of generator reactive power, the previous index TVSM can be extended by incorporating internal model for generators based on their dynamic models and nodal measurements. Based on [44], synchronous generators can be represented by an internal voltage 𝐸 𝐺 in series with an impedance 𝑍 𝐺 . For the 4 th order generator, the internal impedance and voltage can be obtained as [44]:…”

Section: 2mentioning

confidence: 99%

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A new sensitivity approach for preventive control selection in real-time voltage stability assessment

Alzaareer

Saad

Mehrjerdi

et al. 2020

International Journal of Electrical Power & Energy Systems

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Section: 2mentioning

confidence: 99%

“…Based on [44], synchronous generators can be represented by an internal voltage 𝐸 𝐺 in series with an impedance 𝑍 𝐺 . For the 4 th order generator, the internal impedance and voltage can be obtained as [44]:…”

Section: 2mentioning

confidence: 99%

A new sensitivity approach for preventive control selection in real-time voltage stability assessment

Alzaareer

Saad

Mehrjerdi

et al. 2020

International Journal of Electrical Power & Energy Systems

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“…Since the advancement of wide-area measurement system (WAMS) based on synchronized phasor measurements has made it possible to gain real-time information of transient stability status in power systems [2], power system transient stability assessment and emergency control have received renewed interests [3][4][5]. However, online transient rotor angle stability assessment is confronted with some serious challenges due to the increasing scale and more complex dynamics of power systems.…”

Section: Introductionmentioning

confidence: 99%

Wide-Area Measurement—Based Model-Free Approach for Online Power System Transient Stability Assessment

Huang

Chen

et al. 2018

Energies

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Online assessment of transient stability of power systems is critical for avoiding blackout. The increasing installation of phasor measurement units in power systems and the advancement of the wide-area measurement systems make it possible to develop methods for online assessment of power systems by using a large amount of real-time synchronous data. In this paper, we propose an approach based on the largest Lyapunov exponent (LLE) for online transient rotor angle stability assessment, using only wide-area measurement systems data. Through establishing a mathematical model that accounts for the LLE value and the rotor speed, as well as analyzing the post-fault phase-plane trajectory, we present a fast stability criterion to determine whether transient instability occurs. The proposed approach is model-free and does not need long-time LLE data to identify the final sign of the LLE. Furthermore, to reduce computational cost and realize online assessment for large-scale power systems, the critical generator pair (CGP) is recognized as the observation for the rotor angle stability assessment, and an effective algorithm for identifying the CGP is presented. Several case studies on the IEEE-39 bus test system and East China power grid are reported to demonstrate the accuracy and effectiveness of the proposed approach.Keywords: power system stability; online stability assessment; the largest Lyapunov exponent (LLE); rotor angle speed; wide-area measurement system (WAMS)

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Dual Enhancement of Power System Monitoring: Improved Probabilistic Multi-Stage PMU Placement with an Increased Search Space & Mathematical Linear Expansion to Consider Zero-Injection Bus

et al. 2018

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This paper presents a mathematical linear expansion model for the probabilistic Multistage Phasor Measurement Unit (PMU) Placement (MPP) in which zero-injection buses (ZIBs), as well as communication channel limitations, are taken into consideration. From the linearization perspective, presenting a model formulizing the probabilistic concept of observability while modelling the ZIB is of great significance, and has been done in this paper for the first time. More importantly, the proposed probabilistic MPP utilizes a technique disregarding the prevalent subsidiary optimizations for each planning stage. Although this technique, in turn, increases the problem complexity with manifold variables, it guarantees the global optimal solution in a wider and thorough search space; while in the prevalent methods, some parts of the search space might be missed. Furthermore, the proposed model indicates more realistic aspects of the MPP where system operators are allowed to follow their intention about the importance of buses such as strategic ones based on monitoring the priority principles. In addition, the model is capable of considering the network topology changes due to long-term expansions over the planning horizon. Finally, in order to demonstrate the effectiveness of the proposed formulation, the model is conducted on the IEEE 57-bus standard test system and the large scale 2383-bus Polish power system.

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GECM-Based Voltage Stability Assessment Using Wide-Area Synchrophasors

Cited by 4 publications

References 28 publications

A new sensitivity approach for preventive control selection in real-time voltage stability assessment

A new sensitivity approach for preventive control selection in real-time voltage stability assessment

Wide-Area Measurement—Based Model-Free Approach for Online Power System Transient Stability Assessment

Dual Enhancement of Power System Monitoring: Improved Probabilistic Multi-Stage PMU Placement with an Increased Search Space & Mathematical Linear Expansion to Consider Zero-Injection Bus

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