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Preparation of PEA Method Space Charge Measurement System Under DC Voltage Superimposed Impulse Voltage
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Bonan CUI1, Shuai LIU2, Quanxu JIANG1, Xia WANG1
Insulating Materials | 2022, 55(8) : 104 - 112
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Insulating Materials | 2022, 55(8): 104-112
• Test and Analysis •
Preparation of PEA Method Space Charge Measurement System Under DC Voltage Superimposed Impulse Voltage
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Bonan CUI1, Shuai LIU2, Quanxu JIANG1, Xia WANG1
Affiliations
  • 1State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an 710115, China
  • 2State Grid Dalian Power Supply Company, Dalian 116000, China
Published: 2022-08-20 doi: 10.16790/j.cnki.1009-9239.im.2022.08.017
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In DC transmission lines, cable line is easy subjected to the impact of operating overvoltage and lightning overvoltage, which leads to cable line superimposed by impulse voltage on the basis of DC voltage, making the space charge accumulation on insulation layer change. In order to study the effect of impulse voltage superposition on the charge accumulation in the operating DC cable lines, a PEA method space charge measurement system under DC superimposed impulse voltage was developed through improvement on the traditional PEA method, combining with equivalent circuit formula deduction and Pspice software simulation, and reasonable selection of RC-component in measurement system. The space charge characteristics of XLPE samples under DC superimposed impulse voltage were measured. The results show that the coupling efficiency of impulse voltage and DC voltage is very high, and the space charge characteristics show that the superimposing the same polarity of impulse voltage can promote the injection and migration of the same polarity charge more compared with superimposing different polarity of impulse voltage.

PEA method  /  space charge  /  coupling efficiency  /  DC superimposed impulse voltage  /  XLPE
Bonan CUI, Shuai LIU, Quanxu JIANG, Xia WANG. Preparation of PEA Method Space Charge Measurement System Under DC Voltage Superimposed Impulse Voltage[J]. Insulating Materials, 2022 , 55 (8) : 104 -112 . DOI: 10.16790/j.cnki.1009-9239.im.2022.08.017
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.08.017
  • Receive Date：2021-08-12
  • Online Date：2025-12-23
  • Published：2022-08-20
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History
  • Received：2021-08-12
  • Revised：2021-11-07
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Affiliations
    1State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an 710115, China
    2State Grid Dalian Power Supply Company, Dalian 116000, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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