Dynamic Simulation of Power Systems Considering Transmission Lines Icing and Insulators Flashover in Extreme Weather

Chen, Lizheng; Shi, Xiaohan; Peng, Bo; Sun, Jingwen

doi:10.1109/access.2022.3166483

Cited by 6 publications

(5 citation statements)

References 26 publications

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“…When water droplets move to the electric field area near the insulator, the droplets collide with the charged particles to make them charge [22]. The saturated charge of the droplet is given by Equation (5).…”

Section: Force Analysis Of Supercooled Water Dropletsmentioning

confidence: 99%

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Influence of positive DC electric field on rime icing on the insulator and its experimental verification in the natural environment

Liu

Jiang

et al. 2022

High Voltage

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The electric field imposes a significant effect on ice accretion on the insulator. The impact of an AC electric field on insulator icing in an artificial climate chamber has been addressed. Compared with AC, DC electric field exerts an attraction on supercooled water droplets, which is more detrimental to the power system. Moreover, the icing on energised insulators is rarely studied in the natural environment. In the present research, an electrical, fluid coupled‐field simulation was carried out on the insulator. The force characteristics and motion deviation features of water droplets at different positive DC electric field strengths were studied. On this basis, rime icing on the insulator energised with different positive DC voltages was investigated in the field. Results show that the charged droplet shifts along the electric field line under a positive DC voltage. The deviation degree of the droplet increases with the increment of the voltage and droplet size and decreases with an increase in wind speed. As the voltage rises, the surface roughness, icing amount and icing length of rime ice‐covered insulator increase. Consequently, compared with that without energisation, the local collision coefficient, icing amount and icing length increase by 17.6%, 46.4% and 63.9%, respectively, under a 40 kV DC voltage.

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Section: Force Analysis Of Supercooled Water Dropletsmentioning

confidence: 99%

“…In February 2021, Texas in the United States was hit by a strong snowstorm. Consequently, approximately 48.6% of the total installed capacity of 108,017 MW was forced out at the highest point due to the effects of the cold weather event in Texas [5].…”

Section: Introductionmentioning

confidence: 99%

Influence of positive DC electric field on rime icing on the insulator and its experimental verification in the natural environment

Liu

Jiang

et al. 2022

High Voltage

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“…A digital twin, as a key technology in the digitization transformation, has progressively emerged as the optimal choice for achieving real-time simulation of transmission line conditions and conducting accurate assessments and predictions. In recent years, flashovers and line failures caused by the oscillation of conductor deicing have become more frequent, directly impacting the reliability of the transmission line system [5][6][7]. Therefore, to enhance the safety of the transmission lines, it is necessary to establish accurate models for monitoring the status of the transmission line.…”

Section: Introductionmentioning

confidence: 99%

Research on Digital Twin Dynamic Modeling Method for Transmission Line Deicing System

Chen,

Liu,

Wang

et al. 2024

Energies

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A digital twin is recognized as a pivotal technology in a new type of power system monitoring as it provides an effective method for monitoring the vibration caused by ice shedding in overhead transmission lines. The digital twin model differs from traditional models in that it has the characteristics of precise mapping and real-time simulation. These emerging characteristics lead to urgent updating of the existing modeling approaches. Therefore, the current study proposes a dynamic digital twin modeling method for transmission line ice-shedding systems. In this approach, an analytical solution for conductor deicing oscillation is proposed to describe the span and tension unchanged in any time period and then segmented and iteratively corrected with measured time-varying parameters to implement real-time simulation functionality. A dynamic geometric model for transmission lines is proposed based on the Unity3D platform. In addition, a human-computer interaction visualization platform is proposed to display twin data, with the objective of realizing precise mapping of real transmission lines. Finally, an application of this systematic approach to continuous three-span wire demonstrates the feasibility and effectiveness of the proposed approach.

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“…Reference [12] used an EEMD feature extraction method to predict transmission line icing. Reference [13] completed the establishment of power grid failure rate model based on various historical data and realized the simulation model of multi time scale hybrid system. Reference [14] propose a new model for transmission facility damage assessment during ice storm, which uses GPD and copula functions.…”

Section: Introductionmentioning

confidence: 99%

Research on identification method of weak links in transmission network considering strong wind in severe cold weather

Zhuang

Wang

et al. 2023

J. Phys.: Conf. Ser.

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The ice disaster has brought many adverse effects on the power transmission system, which is mainly studied from the transmission line failure rate perspective. Strong winds often accompany the ice disaster weather, the motion path of wind is considered when identifying the weak location of transmission network system. According to the theory of meteorological simulation, and the mathematical relationship between the effective wind speed and the forced outage rates is obtained. A transient stability risks assessment method is proposed considering the ice disaster in the case of a strong wind moving path. According to the fault probability of transmission lines, a predictive fault set for power grid risk assessment is established. The IEEE-39 bus system is used as an example to analyze the effectiveness of the proposed method. The simulation results show that meteorological parameters, geographical environment, and other factors, especially the meteorological advance speed and the direction of transmission lines, will cause greater damage to the stability of the transmission system.

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Dynamic Simulation of Power Systems Considering Transmission Lines Icing and Insulators Flashover in Extreme Weather

Cited by 6 publications

References 26 publications

Influence of positive DC electric field on rime icing on the insulator and its experimental verification in the natural environment

Influence of positive DC electric field on rime icing on the insulator and its experimental verification in the natural environment

Research on Digital Twin Dynamic Modeling Method for Transmission Line Deicing System

Research on identification method of weak links in transmission network considering strong wind in severe cold weather

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