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Liezheng Tang
Wuhan University
Breakdown voltageFinite element methodVoltageElectronic engineeringConductor
15Publications
4H-index
32Citations
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Publications 16
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#1Liezheng Tang (WHU: Wuhan University)H-Index: 4
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Xuefeng Yin (WHU: Wuhan University)
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#1Liezheng Tang (WHU: Wuhan University)H-Index: 4
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Rou Chen (EPRI: Electric Power Research Institute)
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Electric field analysis is an important basis for the insulation design of high-voltage direct-current equipment. The resistivity is a strong function of temperature and electric field, which may lead to the divergence of a numerical solution, and the initial approximations are the key to convergence. Therefore, a novel approach for nonlinear electric field indirect coupling analysis is developed. This algorithm converts the original nonlinear electric field into homotopy equations under a speci...
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#1Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
#2Liezheng Tang (WHU: Wuhan University)H-Index: 4
Last. Fan Yi (WHU: Wuhan University)
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#1Liezheng Tang (WHU: Wuhan University)H-Index: 4
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Xuefeng Yin (WHU: Wuhan University)
view all 6 authors...
The fully insulated busbar has been extensively used in power and shipboard applications due to its favorable economic efficiency and excellent performance. Because of contact resistance and larger insulation thermal resistance, the joint, in certain circumstances, form a hotspot in the circuit. For hotspot temperature monitoring, therefore, this paper proposed an indirect approach which consists of radial direction temperature calculation (RDTC) in the busbar and axial direction temperature cal...
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#1Liezheng Tang (WHU: Wuhan University)H-Index: 4
#2Jiangjun Ruan (WHU: Wuhan University)H-Index: 10
Last. Ke Tang (WHU: Wuhan University)H-Index: 1
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This study aims to monitor the temperature inside power cable joint, with strong robustness to variable thermal environments and uncertain thermal parameters of the joint. The model consists of two sequential steps, radial-direction temperature inversion in the cable and axial-direction temperature inversion in the conductor. The former part was improved by coating the cable with a heat insulated layer, whereas the latter one was optimised through a proper parameter selection. Afterwards, an out...
1 CitationsSource
#1Qinghua ZhanH-Index: 2
#2Jiangjun RuanH-Index: 10
view all 7 authors...
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#2Jiangjun RuanH-Index: 10
Last. Taotao ZhouH-Index: 2
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#1Qinghua ZhanH-Index: 2
#2Liezheng Tang (WHU: Wuhan University)H-Index: 4
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The inner capacitive coupling partial discharge sensor for cable joints is of high sensitivity and wide detecting bandwidth, but can be coupled to a dangerously high voltage under lightning impulse with lots of high frequency components. In this paper, an equivalent circuit model was built up to simulate the coupling potential of sensor under lightning impulse. Subsequently, an inner capacitive coupling sensor applied for partial discharge detection in 10kV cable joints was developed and install...
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#1Qinghua ZhanH-Index: 2
#2Liezheng Tang (WHU: Wuhan University)H-Index: 4
view all 8 authors...
It is significant for engineering practice to monitor the hot spot temperature of cable joint which is a weak link in the transmission line. For this purpose, a computation model of cable joint temperature was established by radial basis function neural networks in this paper, in which square of current, surface temperature of prefabricated rubber and ambient temperature at present and before several hours called delay time were taken as inputs and real-time cable joint temperatures were outputs...
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