2020
DOI: 10.1049/hve.2019.0395
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Interfacial space charge characteristic of PPLP insulation for HVDC cables

Abstract: High‐voltage DC (HVDC) cables show more efficiency than high‐voltage AC cables over the long distance power transmission and have attracted significant attention recently due to rapid developments in off‐shore wind farm. Polypropylene laminated paper (PPLP) insulation based HVDC cables have provided a reliable operation for many years and are the highest voltage level in operation at the moment. In this study, the authors intend to understand the electrical performance of PPLP insulation system by examining sp… Show more

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Cited by 15 publications
(13 citation statements)
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“…Charge accumulation is a very important factor in the acceleration of insulation deterioration [16][17][18], which distorts the electric field, causing flashover [19][20][21][22] and promoting the initiation and growth of the electrical tree [23]. Previous research has illustrated that the charges may accelerate under the pulsed voltage (100-300 Hz) and collide with the molecular chain, breaking the microstructure of the insulation material and resulting in the increase of the fractal dimension of the electrical tree [24].…”
Section: Introductionmentioning
confidence: 99%
“…Charge accumulation is a very important factor in the acceleration of insulation deterioration [16][17][18], which distorts the electric field, causing flashover [19][20][21][22] and promoting the initiation and growth of the electrical tree [23]. Previous research has illustrated that the charges may accelerate under the pulsed voltage (100-300 Hz) and collide with the molecular chain, breaking the microstructure of the insulation material and resulting in the increase of the fractal dimension of the electrical tree [24].…”
Section: Introductionmentioning
confidence: 99%
“…In the previous description, the accumulation of negative charges is greater than that of positive charges, and there is almost no accumulation of positive charges in the silicone elastomer under the conditions of lower magnitude DC voltage and lower duty cycle square wave voltage. Among other common insulating materials, low‐density cross‐linked polyethylene [23] and oil paper [24] also have the same phenomenon of homopolar charge accumulation, while epoxy resin is dominated by heteropolar charge accumulation [25]. Compared with oil paper and low‐density cross‐linked polyethylene, the difference of positive and negative charges accumulation of silicone elastomers is larger.…”
Section: Analysis and Discussionmentioning
confidence: 99%
“…In high/ultrahigh voltage (HV/UHV) direct current (DC) power transmission systems, the insulating performance of dielectric materials is vital for the safety of electrical equipment [ 1 , 2 , 3 , 4 ]. There will be space charge accumulation inside the insulating material under a high-voltage DC electric field, resulting in the distortion of the electric field [ 5 ].…”
Section: Introductionmentioning
confidence: 99%