Statistical characteristics and mechanism analysis of adhered particle on surface under strong electric field

Jiang, Yunpeng; Li, Lee; Lu, Ming; Wang, Rumeng; Jiang, Yi-Wen; Liu, Shanfeng; Su, Chao

doi:10.1016/j.partic.2018.03.016

Cited by 7 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adhesion force includes many forces, such as Van der Waals forces, electrostatic forces, and gravity [30]. Previous studies have shown that Van der Waals forces are dominant and are several orders of magnitude higher than other forces [3], [31]. The attractive Van der Waals force between an ideal spherical particle and a flat solid surface is given by [32].…”

Section: Adhesion Force Calculationmentioning

confidence: 99%

“…Insulator contamination flashover is a severe threat to the reliability and safety of power systems. According to historical statistics, in addition to lightning hazards, insulator contamination flashover is the second top hazard for a power grid, but the damage is approximately 10 times more than that of a lightning hazard [3]. Therefore, effective measures must be implemented to remove contamination from insulator surfaces in a timely manner to ensure the safety and reliability of power systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

Tian

et al. 2022

IEEE Access

View full text Add to dashboard Cite

Contamination flashover of insulators is one of the main threats to the safety of power systems, and regular cleaning of insulator surface pollution is an effective solution to this problem. In this paper, the laser cleaning of ceramic insulators is studied via simulations and experiments. The adhesion between a contamination layer and an insulator surface is estimated. A laser cleaning model for contaminated insulators is established, and a numerical analysis of the thermal stress field distribution characteristics of laser cleaning is carried out. Various factors that affect the thermal stress field distribution, including the laser power, laser scanning speed and thickness of the contamination layer, are also analysed. The optimal cleaning parameters for the best performance of laser cleaning are obtained through simulation and experiments. The result shows if the equivalent salt deposit density (ESDD) is 0.05 mg/cm 2 , and the nonsoluble deposit density (NSDD) is 0.25 mg/cm 2 , the best cleaning effect could be achieved when the laser power is 100 W and the scanning speed reached 6000 mm/s.

show abstract

Section: Adhesion Force Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

Tian

et al. 2022

IEEE Access

View full text Add to dashboard Cite

show abstract

“…In all kinds of world sprint competition stages, the di erence between Chinese domestic elite sprinters and foreign high-level athletes in the early stage of the 100-meter movement is not big, sometimes they can lead slightly, and basically they can keep pace with each other. However, in the middle and second half stages, Chinese sprinters will be slowly left behind, and finally, the distance will widen sharply, eventually forming an irreversible disadvantage [4,5].…”

Section: Introductionmentioning

confidence: 99%

The Characteristics and Physical Fitness Characteristics of Track and Field Sprint Events Based on Discrete Dynamic Modeling of Complex Systems

Zhao

2022

Mobile Information Systems

View full text Add to dashboard Cite

Sprint is not only the oldest sport in track and field but also one of the most competitive sports today. This paper studies the characteristics of sprint and the physical characteristics of sports human body. Using the characteristics of genetic programming combined with system structure estimation and parameter estimation, this paper expounds the application of genetic programming in discrete dynamic modeling of complex systems. A model evaluation method based on error estimation is proposed. Based on the analysis of big data, the intelligent control model of track and field sprinters’ training progress is designed, and the simulation experiment is carried out through the simulation environment. This paper analyzes their physical quality, discusses the contents and methods of sprint training, and provides a reference for coaches engaged in sprint training. The intelligent training schedule model of track and field sprinters from the perspective of big data analysis has outstanding practical value. It can quickly and accurately formulate training plans, solve data fluctuations under the trend of big data segmentation, and realize intelligent operation. Its fluency and accuracy are very high, which is worthy of vigorous promotion and application.

show abstract

“…However, in the fog-haze environment, the particles deposited on the surface of porcelain insulator have a particle size of smaller than 14.6 µm and account for about 90% [12]. The particle size has a significant effect on particles contamination deposition on the insulator surface [13]- [15]: the movement trajectory of contamination particles smaller than 10µm mainly depends on electric field force, while the function of fluid drag force is more conspicuous when the diameter is larger than 10 µm [16].…”

Section: Introductionmentioning

confidence: 99%

Simulation on Deposition Characteristics of Contamination Particles in Fog-Haze Environment

Zhao

Song

2020

IEEE Access

View full text Add to dashboard Cite

Fog-haze weather can aggravate the particles deposition on the insulator surface, which will cause pollution flashover. In this paper, the multiphysics software COMSOL was used to numerically simulate the particle deposition characteristics on the surface of XWP 2-160 porcelain insulator under wind tunnel conditions, and the simulation results were compared with wind tunnel test results to verify the rationality of the simulation model and the method. Based on this, the contamination deposition characteristics of this insulator on 110kV transmission lines under fog-haze environment were simulated. And the effects of wind speed, contamination concentration, and voltage type on particle deposition were analyzed. The results show that under the same conditions, the NSDD under DC voltage is the largest and it is the smallest under unelectrified state. The particle deposit amount increases approximately linearly with increasing wind speed and contamination concentration under DC voltage. In moderate fog-haze, the influence of wind speed on AC transmission line is larger than that on DC transmission line. The proportion of NSDD DC to NSDD AC displays a trend of gradual decrease with increasing wind speed and tends to be gentle gradually, and the ratio under all conditions is greater than 4. INDEX TERMS Fog-haze environment, particle deposition characteristics, wind speed, contamination concentration, voltage type.

show abstract

Statistical characteristics and mechanism analysis of adhered particle on surface under strong electric field

Cited by 7 publications

References 34 publications

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

The Characteristics and Physical Fitness Characteristics of Track and Field Sprint Events Based on Discrete Dynamic Modeling of Complex Systems

Simulation on Deposition Characteristics of Contamination Particles in Fog-Haze Environment

Contact Info

Product

Resources

About