Interval method for uncertain power flow analysis based on Taylor inclusion function

Liao, Xiaobing; Liu, Kaipei; Zhang, Yachao; Wang, Kun; Qin, Liang

doi:10.1049/iet-gtd.2016.1344

Cited by 32 publications

(23 citation statements)

References 35 publications

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“…In the existing research, the analysis of the tie-line power fluctuation with various disturbances is fairly sophisticated and the estimation method of the power fluctuation amplitude of the tie-line in various oscillations is obtained [4] - [7], while the research on the voltage fluctuation of the interconnected power grid with stochastic disturbance is relatively rare. At present, most research focuses on the power flow uncertainty, aiming at the quasi-steady-state fluctuation characteristic of bus voltage with power fluctuation [8]- [11]. For example, in [6], [7], containing the fluctuation characteristic of wind power and the characteristic of load fluctuation, active power fluctuations of AC tie-line are decomposed in detail, and the complex power fluctuations are analyzed by the probability distribution estimation method.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Dynamic Voltage Fluctuation Mechanism in Interconnected Power Grid with Stochastic Power Disturbances

Peng

et al. 2020

Journal of Modern Power Systems and Clean Energy

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With the integration of large-scale renewable energy and various new types of loads, the stochastic fluctuation characteristic of the power has seriously affected the secure and stable operation of interconnected power grids. In addition to active power fluctuations of AC tie-lines that have been studied in the past, the problem of dynamic fluctuation of bus voltage is also increasingly prominent. Firstly, the typical power fluctuations of electric railway traction load, smelting load, and wind power generation in modern power systems are presented and the accompanying voltage fluctuations are analyzed. Secondly, the dynamic fluctuation mechanism and distribution characteristic of the system voltage under special forced oscillation and generalized forced oscillation are studied. It is found that when the periodic disturbance induces a special forced oscillation, the voltage fluctuation has the same mode information compared to the power angle fluctuation. And it also has obvious peak characteristics near the natural frequency. When the stochastic disturbance induces generalized forced oscillation, the voltage fluctuations can be decomposed into proportional and resonant components according to its frequency domain characteristic. Finally, the above conclusions are verified by the simulation results of an IEEE 4-generator 2-area system.

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Section: Introductionmentioning

confidence: 99%

Analysis of Dynamic Voltage Fluctuation Mechanism in Interconnected Power Grid with Stochastic Power Disturbances

Peng

et al. 2020

Journal of Modern Power Systems and Clean Energy

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“…The problem is usually formulated as a set of non-linear algebraic equations which are solved through iterative methods like the Newton-Raphson method [1] and variations such as the fast decoupled method [2]. The solution of the power flow equations is still a subject of research interest to the power engineering community [3][4][5][6] and related contributions promote variations to optimal power flow analysis, voltage stability analysis and so forth.…”

Section: Introductionmentioning

confidence: 99%

Modified tensor method to power flow analysis

Santos

Kobay

Rosa

et al. 2019

IET Generation, Transmission & Distribution

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“…However, the more important thing is that the system should survive serious disturbances such as the loss of large generators or transmission line faults or short circuits, which is the so-called transient stability problem. Transient stability is the capability of a power system to regain a stable equilibrium operation point when exposed to a severe disturbance, where the dynamic behaviours and interactions of multiple complex dynamic components should be considered [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The operation of an automatic control device and the system operators eventually restore the system to a normal state. If the system is in the state of instability, it will cause run-down or run-away states [9,10]. For example under a sustained fault, the angle separation of the generator rotor increases gradually, or the bus voltage gradually decreases.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Integration of Wind Farms on Power System Transient Stability

et al. 2018

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Abstract:To compensate for the ever-growing energy gap, renewable resources have undergone fast expansions worldwide in recent years, but they also result in some challenges for power system operation such as the static security and transient stability issues. In particular, as wind power generation accounts for a large share of these renewable energy and reduces the inertia of a power network, the transient stability of power systems with high-level wind generation is decreased and has attracted wide attention recently. Effectively analyzing and evaluating the impact of wind generation on power transient stability is indispensable to improve power system operation security level. In this paper, a Doubly Fed Induction Generator with a two-lumped mass wind turbine model is presented firstly to analyze impacts of wind power generation on power system transient stability. Although the influence of wind power generation on transient stability has been comprehensively studied, many other key factors such as the locations of wind farms and the wind speed driving the wind turbine are also investigated in detail. Furthermore, how to improve the transient stability by installing capacitors is also demonstrated in the paper. The IEEE 14-bus system is used to conduct these investigations by using the Power System Analysis Tool, and the time domain simulation results show that: (1) By increasing the capacity of wind farms, the system instability increases; (2) The wind farm location and wind speed can affect power system transient stability; (3) Installing capacitors will effectively improve system transient stability.

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Interval method for uncertain power flow analysis based on Taylor inclusion function

Cited by 32 publications

References 35 publications

Analysis of Dynamic Voltage Fluctuation Mechanism in Interconnected Power Grid with Stochastic Power Disturbances

Analysis of Dynamic Voltage Fluctuation Mechanism in Interconnected Power Grid with Stochastic Power Disturbances

Modified tensor method to power flow analysis

Impacts of Integration of Wind Farms on Power System Transient Stability

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