绝缘材料
絕緣材料
절연재료
INSULATING MATERIALS
2013年
6期
66-70
,共5页
温度%绝缘寿命%击穿电压%介质损耗%局部放电
溫度%絕緣壽命%擊穿電壓%介質損耗%跼部放電
온도%절연수명%격천전압%개질손모%국부방전
temperature%insulation life%breakdown voltage%dielectric loss%partial discharge
为研究温度对牵引电机用电磁线绝缘特性的影响，基于IEC 60851-5标准设计了一套变频电机绝缘老化装置，研究了不同温度下电磁线的失效时间和击穿电压，并探讨了电磁线的介质损耗（tanδ）温度谱。基于方波脉冲条件下的局部放电测试系统，研究了温度对局部放电特性的影响。结果表明：随着温度的升高，绝缘寿命呈反幂函数衰减，击穿电压降低；介质损耗随着温度的升高而增大，在高温区出现小幅度的下降；随着温度的升高，局部放电次数升高，最大放电量逐渐减小。
為研究溫度對牽引電機用電磁線絕緣特性的影響，基于IEC 60851-5標準設計瞭一套變頻電機絕緣老化裝置，研究瞭不同溫度下電磁線的失效時間和擊穿電壓，併探討瞭電磁線的介質損耗（tanδ）溫度譜。基于方波脈遲條件下的跼部放電測試繫統，研究瞭溫度對跼部放電特性的影響。結果錶明：隨著溫度的升高，絕緣壽命呈反冪函數衰減，擊穿電壓降低；介質損耗隨著溫度的升高而增大，在高溫區齣現小幅度的下降；隨著溫度的升高，跼部放電次數升高，最大放電量逐漸減小。
위연구온도대견인전궤용전자선절연특성적영향，기우IEC 60851-5표준설계료일투변빈전궤절연노화장치，연구료불동온도하전자선적실효시간화격천전압，병탐토료전자선적개질손모（tanδ）온도보。기우방파맥충조건하적국부방전측시계통，연구료온도대국부방전특성적영향。결과표명：수착온도적승고，절연수명정반멱함수쇠감，격천전압강저；개질손모수착온도적승고이증대，재고온구출현소폭도적하강；수착온도적승고，국부방전차수승고，최대방전량축점감소。
To study the effect of temperature on the insulating properties of magnet wire for inverter-fed traction motor, based on a self-designed aging test device according to IEC 60851-5, the failure time and breakdown voltage of the magnet wire under different temperature were studied, and the temperature spec-trum of dielectric loss of the magnet wire was discussed. Based on a partial discharge test system, the effect of temperature on the partial discharge characteristic was investigated. The results show that with the increase of temperature, the insulation life decreases according to power function, the breakdown volt-age decreases. The dielectric loss increases with the increasing of temperature, but it decreases a little at high temperature. With the increase of temperature, the partial discharge number increase, and the maxi-mum partial discharge quantity decrease.
