DC Flashover Dynamic Model of Post Insulator under Non-Uniform Pollution between Windward and Leeward Sides
Abstract
:1. Introduction
2. Analysis of Residual Pollution Layer Resistance for Pollution Flashover Dynamic Model
2.1. Residual Pollution Layer Resistance under Uniform Pollution
2.2. Residual Pollution Layer Resistance under Non-Uniform Pollution between Windward and Leeward Sides
2.3. Comparative Results of Residual Pollution Layer Resistance
3. DC Flashover Dynamic Model and Experimental Validation
3.1. DC Pollution Flashover Dynamic Model
3.2. Experimental Validation
4. Results and Discussion
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Shed Parameters (mm) | Leakage Distance (mm) | Structure Diagram |
---|---|---|
L1 = 75 | 3528 | |
L2 = 58 | ||
H1 = 69 | ||
H2 = 39 | ||
D = 270 | ||
H = 1050 |
Test Condition | Experimental Values Uave(kV) | σ,% | Theoretical Values Ucal (kV) | Relative Error ΔU,% | ||
---|---|---|---|---|---|---|
SDD = 0.05 mg/cm2 | m = 1:1 | k = 25% | 83.2 | 3.9 | 90.6 | 8.9 |
m = 1:5 | k = 25% | 72.0 | 2.1 | 70.1 | −2.6 | |
m = 1:5 | k = 35% | 73.8 | 5.8 | 74.8 | 1.3 | |
SDD = 0.10 mg/cm2 | m = 1:3 | k = 35% | 60.3 | 2.5 | 63.3 | 5.0 |
m = 1:1 | k = 35% | 64.7 | 5.2 | 73.5 | 13.6 | |
m = 1:8 | k = 45% | 57.5 | 6.2 | 54.9 | −4.5 | |
SDD = 0.15 mg/cm2 | m = 1:8 | k = 25% | 45.0 | 3.4 | 39.2 | −12.8 |
m = 1:5 | k = 25% | 49.5 | 3.9 | 46.2 | −6.7 | |
m = 1:8 | k = 45% | 50.1 | 4.9 | 44.7 | −10.8 | |
, Uave is experimental flashover voltage, Ucal is theoretical flashover voltage. |
m | k | |||||
---|---|---|---|---|---|---|
25% | 35% | 45% | ||||
a | b | a | b | a | b | |
1:1 | 30.9 | 0.36 | 30.9 | 0.36 | 30.9 | 0.36 |
1:3 | 26.1 | 0.37 | 27.1 | 0.37 | 28.1 | 0.37 |
1:5 | 21.9 | 0.39 | 22.8 | 0.39 | 24.7 | 0.38 |
1:8 | 18.7 | 0.39 | 20.6 | 0.38 | 21.9 | 0.39 |
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Zhang, Z.; Yang, S.; Jiang, X.; Qiao, X.; Xiang, Y.; Zhang, D. DC Flashover Dynamic Model of Post Insulator under Non-Uniform Pollution between Windward and Leeward Sides. Energies 2019, 12, 2345. https://doi.org/10.3390/en12122345
Zhang Z, Yang S, Jiang X, Qiao X, Xiang Y, Zhang D. DC Flashover Dynamic Model of Post Insulator under Non-Uniform Pollution between Windward and Leeward Sides. Energies. 2019; 12(12):2345. https://doi.org/10.3390/en12122345
Chicago/Turabian StyleZhang, Zhijin, Shenghuan Yang, Xingliang Jiang, Xinhan Qiao, Yingzhu Xiang, and Dongdong Zhang. 2019. "DC Flashover Dynamic Model of Post Insulator under Non-Uniform Pollution between Windward and Leeward Sides" Energies 12, no. 12: 2345. https://doi.org/10.3390/en12122345