Partial Discharge Measurement and Analysis of Gap in Oil-Paper Insulation Model under Lightning Impulse Voltage 雷电冲击电压下油纸绝缘气隙模型的局部放电测量与分析
Gap: Consisted of high-temperature rating insulation material, it is intended to increase the reluctance to get the desired inductance. 气隙:由极高耐热性的绝缘材料构成,有意增大磁阻来得到合适的电感值。
The influence Of tightness and monolith of turbogenerator stator bars insulation on their electrical performance, as well as relation between partial discharge and air gap in insulation are analyzed. 分析了汽轮发电机定子线圈绝缘的密实性、整体性对线圈电气性能的影响、局部放电与绝缘中气隙的关系。
Experiment researches of rep-rate gas spark gap insulation recovery 重复率气体火花开关绝缘恢复特性
In the thesis, the insulation recovery properties of spark gap switch are investigated through theoretic analyses and numerical calculation, and the influence of gas flow on the insulation recovery of switch is studied experimentally. 本文从理论分析、数值计算等方面研究了气体火花开关的绝缘恢复特性,实验研究了气流对火花开关恢复速度的影响,其研究结果为火花开关的多脉冲运行奠定了坚实理论基础。
In terms of the design and operation statistics of transmission lines, it is demonstrated that there is enough margin in air gap for standard poles of Zhuhai Power Supply Branch, GPG, and that using unbalanced insulation protection on common-tower double-circuit lines is feasible. 从线路设计和运行统计等方面论证了广东省广电集团公司珠海供电分公司原有标准型杆塔的空气间隙有足够的裕度,因此可在同塔双回线路上采用不平衡绝缘的保护方式。
This paper discussed the effect of winding position and wound method, air gap and the thickness of insulation on the whole performance. Effect of Local Damage of Fire Insulation on Temperature Distribution of Steel Members Subjected to Fire 本文从绕组的绕制方法,绕组与铁芯气隙相对位置、绕组导线绝缘层厚度及绕组形状等方面,探讨了对磁性元件性能的影响防火涂料局部破损对钢构件在火灾下的温度分布影响
After the completion of the sheet lamination, it is necessary to ensure there is no air gap or loose between sheets and to check the insulation between sheets and the insulation of punched core bolt and silicon steel sheets. 在叠片结束后,必须检查片间是否有气隙或松动,并检查片间绝缘及穿芯螺栓与硅钢片之间的绝缘等情况。
If there is air gap, loose and poor insulation, the vibration and local over heat will occur during operation period, which can damage the insulation of stator's wire bar so that it will bring great threat to the safe operation of generator. 如果存在气隙、松动及绝缘不良等情况,在运行过程中会出现振动和局部过热,从而引起定子线棒的绝缘破坏,这对发电机安全运行将造成严重威胁。
The limit frequency of the stable action of the pulsed power source depended on the reinstated time of the gap insulation. 脉冲功率电源稳定工作的极限频率取决于间隙绝缘强度的恢复时间。
The methods of ceramic cap and pin insulator monitoring such as spark gap detecting voltage distribution testing, insulation resistance measurement, aerosurveying and ground surveying were reviewed. 讨论了检测盘形悬式瓷绝缘子的火花间隙法、电压分布法、测量绝缘电阻法、航测法和地面初判法。
This presented method thoroughly gets over a gap that foregone indirect methods can only measure insulation impedance to substitute distributing capacitance. 该测量方法的提出彻底解决了传统绝缘参数间接测量法只能测量电网对地阻抗近似代替对地电容的缺陷。
Air breakdown for composite alternating and direct voltages in a rod plane gap at standard atmospheric conditions were studied to understand insulation breakdown in electrical appliances. 为了分析实际运行中稳态预电压对电力设备绝缘的影响,研究了在标准气象条件下,棒-板间隙的操作冲击特性和交直流预电压的关系。
The results show that oil gap as an influence factor on polarization characteristic of oil paper insulation should be considered. 结果表明油隙作为油纸绝缘极化特性的影响因素之一,在测试分析过程中应当予以考虑。
Hardware is composed by voltage, current, air gap, speed, insulation modules, without position sensor power angle detection module, analog signal conditioning circuits, A/ D conversion circuit, the switch volume acquisition module, communication module. 硬件部分包括电压、电流、气隙、速度、绝缘、无位置传感器功率角检测模块,模拟信号调理电路,A/D转换电路,开关量采集模块,通讯模块。
The increase of contact gap causes the saturation characteristics of insulation strength between the contacts, which limits the development of single vacuum circuit breaker to higher voltage grade. 真空开关触头间绝缘强度随间隙距离增大的饱和特性,使得单断口真空断路器的向高电压等级发展受到限制,利用多个真空断路器构成的多断口真空断路器可以弥补这一缺点。