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Partial discharge inception voltage (PDIV) under repetitive pulse voltage is an important parameter to evaluate the insulation performance of low-voltage random-wound inverter-fed motors. Different from the traditional sinusoidal voltage, the rise time and polarity of the impulse are critical parameters to be considered when PDIV test is carried out on the turn to turn insulation of the winding for inverter-fed motor at repetitive impulsive voltages. In this paper, the influence of repetitive impulsive voltage rise time on the PDIV and energy distribution features of turn to turn insulation for inverter-fed motors with three specification were investigated at repetitive impulse voltages with different impulse rise times (50 ns, 75 ns, 100 ns, and 200 ns), and the mechanism of variation of PDIV with different rise times was discussed. The results show that with the decrease of rise time, the PDIV of three motors decreases, and the maximum decline rate reaches 28.1%. The influence of repetitive pulse polarity on the PDIV test results of low-voltage random-wound inverter-fed motor is limited, indicating that both positive and negative can objectively reflect the PDIV performance of motor. With the increase of impulse rise time, the discharge energy in frequency domain moves from high frequency to low frequency. The research results are expected to provide reference for PDIV test of low voltage inverter-fed motor insulation and the revision of related standards.
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重复脉冲电压下的局部放电起始电压(PDIV)是评估低压散绕变频电机绝缘性能的重要参数。不同于传统正弦电压,采用重复脉冲对变频电机散绕绕组感性负载匝间绝缘进行PDIV测试时,脉冲上升时间和极性是重点考虑的参数。本文在50、75、100、200 ns 4种脉冲上升时间的重复脉冲电压下,研究脉冲上升时间对3台不同规格的低压散绕变频电机匝间绝缘PDIV及放电能量分布的影响规律,并解释了PDIV随脉冲上升时间变化的机理。结果表明:随着脉冲上升时间的减少,3种电机的PDIV值均呈减小趋势,最大下降率达到28.1%。重复脉冲极性对低压散绕变频电机PDIV测试结果的影响有限,表明正、负极性均可客观反映电机的PDIV性能。随着脉冲上升时间的增加,正、负极性下放电频域能量均呈由高频向低频移动的趋势。研究结果有望为低压散绕变频电机的PDIV测试和相关标准的修订提供参考。
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王鹏(1982-),男(汉族),山东菏泽人,副教授,主要从事可再生能源及电力电子系统中的电气绝缘关键技术的研究。
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程驰宙(2000-),男(汉族),陕西宝鸡人,硕士生,主要从事电气设备在线监测、故障诊断与状态评估的研究。
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程驰宙(2000-),男(汉族),陕西宝鸡人,硕士生,主要从事电气设备在线监测、故障诊断与状态评估的研究。
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20(1):245-254., articleTitle=Effect of rise time on PD pulse features under repetitive square wave voltages, refAbstract=null)], funds=[Fund(id=1245062201019577034, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, awardId=51977134, language=CN, fundingSource=国家自然科学基金资助项目(51977134), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1245062196313567631, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, xref=null, ext=[AuthorCompanyExt(id=1245062196317761936, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, companyId=1245062196313567631, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=College of Electrical Engineering, Sichuan University, Chengdu 610065, China), AuthorCompanyExt(id=1245062196321956241, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, companyId=1245062196313567631, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=四川大学 电气工程学院,四川 成都 610065)])], figs=[ArticleFig(id=1245062198314250774, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.1, caption=
Repeated short pulse generator, figureFileSmall=SRPhbTat/ICbkT5liFgbVg==, figureFileBig=karNaTKBvgk1Yi9pwAHHyQ==, tableContent=null), ArticleFig(id=1245062198419108378, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图1, caption=
重复短脉冲发生装置电路, figureFileSmall=SRPhbTat/ICbkT5liFgbVg==, figureFileBig=karNaTKBvgk1Yi9pwAHHyQ==, tableContent=null), ArticleFig(id=1245062198532354596, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.2, caption=
Discharge and repeated pulse, figureFileSmall=senBhLjTTFZ2ygvXS51Clw==, figureFileBig=G0wOMQMtZqBMm2CI7sMQiA==, tableContent=null), ArticleFig(id=1245062198641406508, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图2, caption=
放电波形及脉冲电压, figureFileSmall=senBhLjTTFZ2ygvXS51Clw==, figureFileBig=G0wOMQMtZqBMm2CI7sMQiA==, tableContent=null), ArticleFig(id=1245062198729486901, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.3, caption=
UHF sensors, figureFileSmall=Ly9JeuIf6W0mUACUhYamMg==, figureFileBig=0U0Hx1OFpAJk8ZeAMVZyiw==, tableContent=null), ArticleFig(id=1245062198825955898, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图3, caption=
特高频传感器, figureFileSmall=Ly9JeuIf6W0mUACUhYamMg==, figureFileBig=0U0Hx1OFpAJk8ZeAMVZyiw==, tableContent=null), ArticleFig(id=1245062198897259069, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.4, caption=
PDIV test system, figureFileSmall=mQvu1wxpFkDVWP7dccZAkw==, figureFileBig=e+HOOUwE/QpgTi6F6vcxhw==, tableContent=null), ArticleFig(id=1245062199010505285, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图4, caption=
重复脉冲PDIV测试平台, figureFileSmall=mQvu1wxpFkDVWP7dccZAkw==, figureFileBig=e+HOOUwE/QpgTi6F6vcxhw==, tableContent=null), ArticleFig(id=1245062199094391369, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.5, caption=
PDIV test results of motors under negative polarity, figureFileSmall=Gn+vu2qkwdsE9D+1FkNS5g==, figureFileBig=IW65LTjUNPwgcv3I2XPwYQ==, tableContent=null), ArticleFig(id=1245062199203443275, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图5, caption=
正极性下电机PDIV测试结果, figureFileSmall=Gn+vu2qkwdsE9D+1FkNS5g==, figureFileBig=IW65LTjUNPwgcv3I2XPwYQ==, tableContent=null), ArticleFig(id=1245062199308300884, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.6, caption=
PDIV fitting curves of three motors, figureFileSmall=KPseXudoXB8KsgMJIg21iQ==, figureFileBig=lVj+CQ1LKJ5qMAcirrwMiA==, tableContent=null), ArticleFig(id=1245062199379604056, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图6, caption=
3种电机PDIV测试结果曲线拟合, figureFileSmall=KPseXudoXB8KsgMJIg21iQ==, figureFileBig=lVj+CQ1LKJ5qMAcirrwMiA==, tableContent=null), ArticleFig(id=1245062199513821790, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.7, caption=
PDIV test results of motors under positive polarity, figureFileSmall=peBJSj0i+LKXR1wsu8rkbA==, figureFileBig=LAb5w4FtytArOSIGX2eiDg==, tableContent=null), ArticleFig(id=1245062199643845220, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图7, caption=
负极性下PDIV测试结果, figureFileSmall=peBJSj0i+LKXR1wsu8rkbA==, figureFileBig=LAb5w4FtytArOSIGX2eiDg==, tableContent=null), ArticleFig(id=1245062199719342694, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.8, caption=
Discharge energy distribution under positive pulse, figureFileSmall=n3xwWVlwiFlsDzvLz1zzrw==, figureFileBig=ghiE1bCA3o+3EDxLU307sQ==, tableContent=null), ArticleFig(id=1245062199853560433, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图8, caption=
正极性脉冲下放电能量分布, figureFileSmall=n3xwWVlwiFlsDzvLz1zzrw==, figureFileBig=ghiE1bCA3o+3EDxLU307sQ==, tableContent=null), ArticleFig(id=1245062199971000949, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.9, caption=
Discharge energy distribution under negative pulse, figureFileSmall=kUKuycnTTXhvjf8MosAnKw==, figureFileBig=q1ockzzRQoM2tCyOEd+ssA==, tableContent=null), ArticleFig(id=1245062200050692729, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图9, caption=
负极性脉冲下放电能量分布, figureFileSmall=kUKuycnTTXhvjf8MosAnKw==, figureFileBig=q1ockzzRQoM2tCyOEd+ssA==, tableContent=null), ArticleFig(id=1245062200109412994, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Fig.10, caption=
Turn voltage distribution at different rise time, figureFileSmall=SqoYWwNSPWoa9SoJseAb0g==, figureFileBig=KIzkEKu0KkUpSIMC5a67DA==, tableContent=null), ArticleFig(id=1245062200239436429, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=图10, caption=
不同上升时间下匝电压分布, figureFileSmall=SqoYWwNSPWoa9SoJseAb0g==, figureFileBig=KIzkEKu0KkUpSIMC5a67DA==, tableContent=null), ArticleFig(id=1245062200331711122, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Tab.1, caption=
Parameters of three motors, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 型号 | 相数 | 额定功率/W | 额定电压/V | 绝缘等级 |
|---|
| A | Y801-4 | 3 | 550 | 380 | B |
| B | YS7112 | 3 | 370 | 380 | E |
| C | SP175B | 3 | 9 200 | 380 | F |
), ArticleFig(id=1245062200440763033, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=表1, caption=
3种电机的参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 型号 | 相数 | 额定功率/W | 额定电压/V | 绝缘等级 |
|---|
| A | Y801-4 | 3 | 550 | 380 | B |
| B | YS7112 | 3 | 370 | 380 | E |
| C | SP175B | 3 | 9 200 | 380 | F |
), ArticleFig(id=1245062200554009251, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Tab.2, caption=
Positive PDIV measured results of motor A, figureFileSmall=null, figureFileBig=null, tableContent=
| 上升时间/ns | U相-地/kV | V相-地/kV | W相-地/kV |
|---|
| 50 | 3.27 | 3.82 | 4.06 |
| 75 | 3.31 | 3.86 | 4.15 |
| 100 | 3.40 | 4.07 | 4.37 |
| 200 | 4.09 | 4.36 | 4.61 |
), ArticleFig(id=1245062200671449771, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=表2, caption=
电机A正极性PDIV测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 上升时间/ns | U相-地/kV | V相-地/kV | W相-地/kV |
|---|
| 50 | 3.27 | 3.82 | 4.06 |
| 75 | 3.31 | 3.86 | 4.15 |
| 100 | 3.40 | 4.07 | 4.37 |
| 200 | 4.09 | 4.36 | 4.61 |
), ArticleFig(id=1245062200746947252, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=EN, label=Tab.3, caption=
Negative PDIV measured results of motor A, figureFileSmall=null, figureFileBig=null, tableContent=
| 上升时间/ns | U相-地/kV | V相-地/kV | W相-地/kV |
|---|
| 50 | 3.50 | 3.55 | 4.04 |
| 75 | 3.60 | 3.95 | 4.21 |
| 100 | 3.67 | 4.15 | 4.40 |
| 200 | 3.99 | 4.52 | 4.61 |
), ArticleFig(id=1245062200830833336, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1241795756567364573, language=CN, label=表3, caption=
电机A负极性PDIV测试结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 上升时间/ns | U相-地/kV | V相-地/kV | W相-地/kV |
|---|
| 50 | 3.50 | 3.55 | 4.04 |
| 75 | 3.60 | 3.95 | 4.21 |
| 100 | 3.67 | 4.15 | 4.40 |
| 200 | 3.99 | 4.52 | 4.61 |
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