Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas
Abstract The presence of lightning impulses (LIs) on the DC waveform can seriously influence the insulation performance of a GIL system. The waveshape can be a superposition of the DC and impulse waveform. In this study, the behaviour of partial discharge (PD) on an epoxy surface is investigated und...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-08-01
|
| Series: | High Voltage |
| Online Access: | https://doi.org/10.1049/hve2.12179 |
| _version_ | 1811339131800780800 |
|---|---|
| author | Haotian Wang Cong He Ruochen Guo Xuan Meng Wenze Yuan Junhao Li |
| author_facet | Haotian Wang Cong He Ruochen Guo Xuan Meng Wenze Yuan Junhao Li |
| author_sort | Haotian Wang |
| collection | DOAJ |
| description | Abstract The presence of lightning impulses (LIs) on the DC waveform can seriously influence the insulation performance of a GIL system. The waveshape can be a superposition of the DC and impulse waveform. In this study, the behaviour of partial discharge (PD) on an epoxy surface is investigated under DC and LI superimposed voltage in SF6. The lightning impulses with different polarities are superimposed on the epoxy surface under both positive and negative DC voltages, respectively. Positive lightning impulses are superimposed on a negative DC voltage with a 90% of the partial discharge inception voltage (PDIV) magnitude. The number and amplitude of the PDs are used to evaluate the insulation performance. The experimental results show that the LI with a different polarity applied to DC can excite the PDs on the epoxy surface. The excitation effect of positive LI superimposed on negative DC is more significant. According to the impulse amplitude and PD characteristics, the influence of superimposed LI on PD excitation can be divided into three stages. As the superimposed LI increases, the amplitude of the excited PD increases gradually, while the PD number first increases and then decreases. This study is expected to provide reference for manufacture and protection of power equipment. |
| first_indexed | 2024-04-13T18:20:49Z |
| format | Article |
| id | doaj.art-663a14f837704f0fa0780911c02bea26 |
| institution | Directory Open Access Journal |
| issn | 2397-7264 |
| language | English |
| last_indexed | 2024-04-13T18:20:49Z |
| publishDate | 2022-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj.art-663a14f837704f0fa0780911c02bea262022-12-22T02:35:27ZengWileyHigh Voltage2397-72642022-08-017474475210.1049/hve2.12179Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gasHaotian Wang0Cong He1Ruochen Guo2Xuan Meng3Wenze Yuan4Junhao Li5State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaAbstract The presence of lightning impulses (LIs) on the DC waveform can seriously influence the insulation performance of a GIL system. The waveshape can be a superposition of the DC and impulse waveform. In this study, the behaviour of partial discharge (PD) on an epoxy surface is investigated under DC and LI superimposed voltage in SF6. The lightning impulses with different polarities are superimposed on the epoxy surface under both positive and negative DC voltages, respectively. Positive lightning impulses are superimposed on a negative DC voltage with a 90% of the partial discharge inception voltage (PDIV) magnitude. The number and amplitude of the PDs are used to evaluate the insulation performance. The experimental results show that the LI with a different polarity applied to DC can excite the PDs on the epoxy surface. The excitation effect of positive LI superimposed on negative DC is more significant. According to the impulse amplitude and PD characteristics, the influence of superimposed LI on PD excitation can be divided into three stages. As the superimposed LI increases, the amplitude of the excited PD increases gradually, while the PD number first increases and then decreases. This study is expected to provide reference for manufacture and protection of power equipment.https://doi.org/10.1049/hve2.12179 |
| spellingShingle | Haotian Wang Cong He Ruochen Guo Xuan Meng Wenze Yuan Junhao Li Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas High Voltage |
| title | Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas |
| title_full | Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas |
| title_fullStr | Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas |
| title_full_unstemmed | Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas |
| title_short | Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas |
| title_sort | partial discharge measurement and analysis under lightning impulse superimposed dc voltage in sf6 gas |
| url | https://doi.org/10.1049/hve2.12179 |
| work_keys_str_mv | AT haotianwang partialdischargemeasurementandanalysisunderlightningimpulsesuperimposeddcvoltageinsf6gas AT conghe partialdischargemeasurementandanalysisunderlightningimpulsesuperimposeddcvoltageinsf6gas AT ruochenguo partialdischargemeasurementandanalysisunderlightningimpulsesuperimposeddcvoltageinsf6gas AT xuanmeng partialdischargemeasurementandanalysisunderlightningimpulsesuperimposeddcvoltageinsf6gas AT wenzeyuan partialdischargemeasurementandanalysisunderlightningimpulsesuperimposeddcvoltageinsf6gas AT junhaoli partialdischargemeasurementandanalysisunderlightningimpulsesuperimposeddcvoltageinsf6gas |