Protection System Design of Overload, Short Circuit and Three-Phase Imbalance for Electromagnetic Starter in Coal Mine-Reference-Cited by-同舟云学术

Protection System Design of Overload, Short Circuit and Three-Phase Imbalance for Electromagnetic Starter in Coal Mine

Published:2014-10 Issue: Volume:1049-1050 Page:726-731
ISSN:1662-8985
Container-title:Advanced Materials Research
language:
Short-container-title:AMR

Author:

Mao Qing Hua¹,Ma Hong Wei¹,Xing Wang¹,Liu Yu¹,Zeng Min²

Affiliation:

1. Xian University of Science and Technology

2. Nan Chang Institute of Science and Technology

Abstract

An intelligent protection system of electromagnetic starter in coal mine was designed. Its controller core is PLC LM3108K. The voltage rank of protection system is 660V and the electric current rank is 400A. It has protection functions for overload, short circuit, break phase and three-phase imbalance. The system achieved overload protection by using the method of inversing time overload. Greater the overcurrent is, Shorter the time of protective action is. The system achieved short circuit protection by using phase sensitive protection method, which improves sensitivity and reliability of short circuit protection. The system can display work status parameters and fault types timely by text LCD. It has the advantages of hardware circuit structure flexibility and automatically reset after fault relieved.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Link

https://www.scientific.net/AMR.1049-1050.726.pdf

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