Tailoring Insulation Surface Charge Behaviors: From Hazards to Functionality



Charge accumulation on the insulation surface distorts the local electric field, triggers partial discharge and flashover, which poses potential threats to the insulation system of the high voltage apparatus. It is an urgent and important requirement to tailor surface charge behaviors of dielectrics for modern electrical and electronic devices.

In this report, we introduce two approaches for tailoring the surface charge behaviors, which are achieved by converting the hazard surface charges into functional charges by means of material modification. To be more specific, a novel surface charge adaptively controlling spacer used in DC GIL is developed, and a surface partial discharge mitigation method is put forward.

We do hope that the two surface charge tailoring approaches mentioned in this report may shed some light on the novel insulation design of DC electric power equipment, DC generators, power electronic devices, printed circuit board (PCB) layout, and various integrated electrostatic sensors and actuators.



  Date and Time




  • Date: 18 Nov 2021
  • Time: 12:00 PM to 01:00 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
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Topic: DEIS TECHNICAL TALK - Tailoring Insulation Surface Charge Behaviors:  From Hazards to Functionality

Time: Nov 18, 2021 12:00 PM Eastern Time (US and Canada)


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Meeting ID: 850 4420 1429

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Meeting ID: 850 4420 1429

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  • Starts 14 October 2021 09:23 PM
  • Ends 18 November 2021 09:23 PM
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Dr. Chuanyang Li


Dr. Chuanyang Li

Dr. Chuanyang Li is a postdoc research associate in the Department of Electrical and Computer Engineering & Institute of Materials Science, the University of Connecticut.

He received his Ph.D degree in the Department of Electrical Engineering, Tsinghua University in 2018. He then worked as a Postdoctoral Fellow at the Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi” of the University of Bologna (Alma Mater Studiorum - Università Di Bologna), Italy from 2018 to 2019. Starting from November 2019, he has been working in the Department of Electrical and Computer Engineering & Institute of Materials Science, University of Connecticut, as a Postdoctoral Fellow. His research interests include mechanism and mitigation solution of surface charge, partial discharge, flashover phenomena, and electrical tree in complex environmental conditions. He served as the Lead Guest Editor of the IEEE Trans. Dielectr. Electr. Insul. Special Issue on Advanced Dielectrics for Gas-Insulated Transmission Lines in 2018, NanoTechnology Focus Collection on Gas-Solid Interface Charging Physics in 2020, and the Guest Editor in High Voltage Special Issues on Interface Charging Phenomena for Dielectric Materials, and DC Partial Discharge in 2020 and 2021, respectively. He currently serves as an associate editor of High Volt., CSEE JPES, and IEEE Trans. Dielectr. Electr. Insul.. He can be reached by: lichuanyangsuper@163.com.