Earticle

초록

영어

Leakage is one of the most common fault forms of mine low-voltage grid protection. With the continuous increase of automation degree of mine, the leakage protection system of mine low-voltage grid needs to be monitored and managed comprehensively; as a response to this demand, the selective leakage protection system of mine low-voltage grid is explored and studied in this paper from the perspective of practical application based on Internet of Things. In this paper, the design of leakage protection system of mine low-voltage grid is proposed based on the combination of ZigBee protocol the framework of Internet of Things, and the perception layer of Internet of Things is constructed by ZigBee technology to collect and transmit the related data. Meanwhile, the low-voltage leakage fault principle of the mine and the variation law of zero-sequence current and zero-sequence voltage mine are analyzed in this paper; on this basis, a selective leakage protection scheme based on the additional DC power detection and zero-sequence power direction is proposed, in which additional DC power principle is applied to the main feeder switch, the protection principle of zero-sequence power direction is applied to the branch feeder switch, and the branch leakage is interpreted by Fourier algorithm. Through experimental verification, the performance indicators of leakage protection system are consistent with standard requirements, with the small error, which can meet the requirements of the mine grid leakage protection. Internet of Things can realize ZigBee networking and transmit the leakage information of the grid the host computer through ZigBee network.

목차

Abstract
 1. Introduction
 2. Application of Internet of Things Technology in the Selective Leakage Protection System of Mine Low-Voltage Grid
  2.1. Overview of Internet of Things Technology
  2.2. Structure of Selective Leakage Protection System of Mine Low-Voltage Grid Based On Internet of Things
 3. Analysis of Leakage Principle of Low-Voltage Network
 4. Leakage Protection of Mine Low-Voltage Grid
  4.1. Additional DC Leakage Protection
  4.2. Zero-Sequence Power Directional Protection
 5. Conclusion
 References

키워드

저자

• Liu Zhongfu [ College of Information & Communication Engineering Dalian Nationalities University, Liaoning Dalian,China ]
• Han Guiying [ College of Information & Communication Engineering Dalian Nationalities University, Liaoning Dalian,China ]
• Shi Lixin [ College of Information & Communication Engineering Dalian Nationalities University, Liaoning Dalian,China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Smart Home

• 간기

  격월간

• pISSN

  1975-4094

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605