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Improvement of DC system insulation monitoring device

  • School of Electrical Engineering and Automation, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Based on the analysis of advantages and disadvantages of the DC system insulation monitoring principle, a new DC system insulation monitoring device is put forward, which is a combination of balanced bridge and switching resistance. Bus voltage detection circuit and branch drain current acquisition module are designed to monitor the insulating state of bus and branch, respectively. The STM32 microcontrollers are used as master MCU and acquisition MCU. In this way, a decentralized modular multi-core detection structure is established. Further, the hardware and software parts of the DC system insulation monitoring device are designed in detail. By testing the prototype in a variety of ground states, the accuracy of ground resistance measurement, branch positioning and fault alarm is verified.

Original languageEnglish
Title of host publicationMeasurement Technology and Engineering Researches in Industry
Pages2364-2370
Number of pages7
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 2nd International Conference on Measurement, Instrumentation and Automation, ICMIA 2013 - Guilin, China
Duration: 23 Apr 201324 Apr 2013

Publication series

NameApplied Mechanics and Materials
Volume333-335
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 2nd International Conference on Measurement, Instrumentation and Automation, ICMIA 2013
Country/TerritoryChina
CityGuilin
Period23/04/1324/04/13

Keywords

  • Balanced bridge
  • DC system
  • Insulation monitoring
  • Switching resistance

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