Ībdel-Salam, M., Abdellah, M.: Dielectric strength of compressed insulating gases and their mixtures. CSEE 31(28), 128–135 (2011)Ībdel-Salam, M.: Positive wire-to-plane coronas as influenced by atmospheric humidity. Meng, X.: Variation of AC corona discharge pulse characteristics with air pressure and humidity. Meng, X.: Analysis on negative DC corona inception voltage of stranded conductors. CSEE 40(15), 5061–5070 (2020)Ībdel-Salam, M., Allen, N.L.: Onset voltage of positive glow corona in rod-plane gaps as influenced by temperature. 44(3), 1023–1033 (2018)ĭu, L., et al.: Measurement of AC corona onset voltage conductor by space charge. Yin, F.: Influences of electric field of conductors surface on conductor icing. Jinhe, U.: Analysis of characteristic quantities of space charges in AC corona discharge. 36(8), 1916–1922 (2010)įang, J.-B.: Effect of water dropon UHV DC transmission corona performance in corona cage. Meng, X.: Influence of environmental factors on positive DC corona inception voltage of overhead transmission lines. He, G.: Influence of rain drops on corona discharge in AC transmission lines under high rainy condition. He, G., et al.: Impact of icing severity on corona performance of glaze ice-covered conductor. Yin, F.: Influence of AC electric field on conductor icing. High Voltage Apparatus 58(2), 50–59 (2022)īian, X.: Influence of air pressure and humidity on positive DC corona streamer pulse characteristics. Wu, D.: Research on influences of temperature on positive streamer corona discharge characteristic of rod-plane gap. Lu, J.: Current status of study on the effects of airborne particles on DC corona discharge: space-charge effect of particles. High Voltage Apparatus 51(01), 13–17 (2015)Ĭhen, L.: Influence of rain drops on corona discharge in AC transmission lines under high rainy condition. Zhu, J.: Influence of surface water drop on corona characteristics of AC transmission lines. Ma, A.: Effect of raindrops under DC power transmission lines on corona vibration considering of environmental factors. Under the same environmental factors, the larger the raindrop, the smaller the corona voltage, because the electric field strength near the large raindrop is large, the effective ionization coefficient is large the pressure drops, the temperature rises, the ionization area increases simultaneously with the effective ionization coefficient, so that the corona voltage decreases the humidity rises, the effective ionization coefficient rises, the collisional ionization ability in space increases, so that the corona voltage decreases, but the decrease is small. The results show that the corona voltage is influenced by both environmental factors and raindrop morphology. According to the gas discharge theory, a simulation model is established for a comprehensive study, and whether the number of secondary electron avalanche positive ions is greater than the number of initial electron avalanche positive ions is used as a criterion for corona initiation. The distortion of the surrounding electric field by water droplets on the surface of the conductor in the rain environment becomes an important factor affecting the corona, and the environmental factors in different areas will also have an impact on the conductor corona, so the study of environmental factors on the impact of the corona voltage of positive DC conductors with raindrops has high practical engineering significance. Corona discharge can cause energy loss in high-voltage transmission lines, and can also seriously threaten the stable operation of the line.
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