Partial discharge detection and analysis in motor winding under variable frequency and air pressure

变频、气压下电机绕组局部放电检测与分析

• 批准号: 522293-2017
• 负责人: Kordi, Behzad
• 金额: $ 1.82万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640652
• 关键词: Partial; discharge; detection; analysis; motor

The growth of electrical equipment in modern 'more-electric' aircraft is achieved by increasing the voltage ofthe electrical power supplies. Electrical stress on the insulation system increases as the voltage increases, andresults in partial discharges (PD). At higher voltages, the partial discharges will be disruptive and lead toinsulation failure. The integrity of the electrical insulation system of more-electric aircraft is a serious concernunder operating conditions of higher electric stress and low air pressure. An aircraft experiences a wide rangeof operating pressures during ascent and descent. The pressure at high altitudes of 33,000 to 46,000 feet (10 to14 km) drops to as low as 30% of the pressure at ground level. It is known that the dielectric strength of airdecreases with altitude, and this increases the risk of partial discharges. The performance of the electric powersystem components of an aircraft must be reliable at high altitude under sub-atmospheric pressures. Because ofthis, PD activity measurement under sub-atmospheric pressures has been a topic of interest for the evaluationof aircraft insulation system.The industrial partner of this research project, IRIS Power, is a Canadian company that is internationallyrecognized for their specialization in condition monitoring of rotating machines. The focus of their activitieshas been mostly on rotating machines that are part of an electric power system installed at the ground level. Theproposed research will enable the study and investigation required to expand the PD detection and analysismethods developed by IRIS to the case of motors employed in 'more-electric' aircraft. The main objective of theproposed research is to initiate a collaboration between University of Manitoba's McMath High Voltage Laband IRIS Power that will enable IRIS Power to expand the applicability of their techniques to PD detection andanalysis at high altitudes and low air pressure for monitoring modern 'more-electric' aircraft and extend thescope of their activities to aeronautic industry.

现代“多电”飞机中电气设备的增长是通过提高电源电压来实现的。绝缘系统上的电应力随着电压的增加而增加，并导致局部放电（PD）。在较高的电压下，局部放电将是破坏性的，并导致绝缘故障。在高电应力和低气压的工作条件下，多电飞机的电绝缘系统的完整性是一个严重的问题。飞机在上升和下降过程中会经历很大范围的工作压力。在33，000至46，000英尺（10至14公里）的高空，气压下降到地面气压的30%。众所周知，空气的介电强度随海拔高度而降低，这就增加了局部放电的风险。飞机的电力系统部件的性能必须在高空亚大气压下可靠。正因为如此，亚大气压下的局部放电活性测量一直是评估飞机绝缘系统的一个感兴趣的话题。本研究项目的工业合作伙伴IRIS Power是一家加拿大公司，该公司因其在旋转机器状态监测方面的专业化而获得国际认可。他们活动的重点主要是旋转机器，这些机器是安装在地面的电力系统的一部分。拟议的研究将使研究和调查所需的扩大局检测和分析方法的IRIS开发的情况下，电机采用的“多电”飞机。拟议的研究的主要目标是发起之间的合作马尼托巴的McMath高压实验室和IRIS电源大学，将使IRIS电源扩大其技术的适用性，以PD检测和分析在高海拔和低气压监测现代“更多的电动”飞机和扩展他们的活动范围，航空工业。