Match!
Jiangjun Ruan
Wuhan University
EngineeringFinite element methodVoltageElectronic engineeringElectric field
134Publications
10H-index
401Citations
What is this?
Publications 144
Newest
#1Qiuyu Yang (WHU: Wuhan University)H-Index: 1
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Z. Zhuang
view all 3 authors...
Abstract In order to minimize operation and maintenance costs and enhance the reliability of circuit-breaker (CB), faults should be detected simply and diagnosed effectively. To enable this, monitoring or diagnostic-test techniques should provide critical information of the CB and make the decision-making process simple. In recent years, vibration-based analysis has gained attention for the said purpose. However, the diagnostic performance is limited by the highly time-varying and non-stationary...
Source
Source
#1Taotao Zhou (WHU: Wuhan University)
#1Taotao ZhouH-Index: 2
view all 5 authors...
Focusing on the shortage of mechanical defect detection and diagnosis technology for disconnectors, a wireless monitoring method for the mechanical state of disconnectors is proposed. The split-core current sensors and improved voltage sensors are used to measure the motor currents and voltages of the disconnector under typical mechanical states at different working voltages. The wireless communication network is used to upload the acquisition data to the cloud server quickly, and the received d...
Source
#2Jiangjun RuanH-Index: 10
Last. Yan Gan
view all 6 authors...
Source
#1Taotao Zhou (WHU: Wuhan University)H-Index: 2
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Yufei Liu (WHU: Wuhan University)
view all 4 authors...
Currently, there is no effective detection and diagnosis technology for the frequently happened mechanical defects of disconnectors. A porcelain column high-voltage disconnector is taken as the obj...
Source
#1Liezheng Tang (WHU: Wuhan University)H-Index: 4
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Xuefeng Yin (WHU: Wuhan University)
view all 4 authors...
Source
Source
Transformer winding hot-spot temperature (HST) is one of the important factors affecting transformer oil–paper insulation deterioration. This study presents a three-dimensional coupled electromagnetic-fluid-thermal analysis method for HST calculation in a 10 kV oil-immersed distribution transformer, the influence of the transformer internal metal structure parts on the HST of the winding is considered in the simulation. Combining electromagnetic-field calculation with no-load test and load test ...
Source
#1Liezheng Tang (WHU: Wuhan University)
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
view all 5 authors...
The increasing harmonics caused by inverter supply have an adverse impact on the end-winding vibration of the induction machine in accelerating failure and adding noise. Therefore, this paper puts forward an approach for end-winding magnetic force calculation in the inverter-fed induction machine. The 2D field–circuit–motion coupling analysis is used to calculate the stator currents in an induction machine, which are taken as loads in 3D transient magnetic analysis to obtain magnetic force on th...
Source
#1Qiuyu Yang (WHU: Wuhan University)H-Index: 1
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Daochun Huang (WHU: Wuhan University)H-Index: 6
view all 4 authors...
The working condition of opening damper directly affects the opening mechanical characteristics and component lifetime of high-voltage circuit breaker (HVCB). Vibration diagnostic technique is a noninvasive and efficient way for on-line evaluation of the opening damper. Vibration time-frequency image which constructed by using the method of time-frequency analysis (TFA) contains rich feature information of opening damper’s working condition. In this paper, a condition evaluation method for openi...
Source
12345678910