Feasibility study of integration of electrical fault recognition system (EFRS) with building automation system (BAS)

Pao Yue-kong Library Electronic Theses Database

Feasibility study of integration of electrical fault recognition system (EFRS) with building automation system (BAS)

 

Author: Lee, Cheuk Ming Brian
Title: Feasibility study of integration of electrical fault recognition system (EFRS) with building automation system (BAS)
Degree: M.Eng.
Year: 2016
Subject: Electric fault location.
Electric machinery -- Monitoring.
Electric circuit analysis.
Buildings -- Energy conservation -- Automation.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Building Services Engineering
Pages: x, 67, 47 pages : color illustrations
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2917125
URI: http://theses.lib.polyu.edu.hk/handle/200/8612
Abstract: Building Automation System (BAS), also know us Building Management System (BMS), is one of the most important building services systems in modern Grade A commercial buildings in Hong Kong. BAS is capable and responsible for monitoring as well as controlling different building services systems. However, the previous generation of BAS might not equip with advanced electrical fault detection or recognition system. Hence, during electrical fault occur, previous generation BAS can only show the operation status of the circuit breaker which has either an OPEN or CLOSED status. They are unable to show more details or causes as to why a circuit breaker is OPEN. Furthermore, such signal monitoring system is only applied to the major sectional electrical distribution circuit breakers or main switches. Based on real life situation that happened in the past whereby after an electrical system was tripped. A decision to reenergize the system without fully understanding the causes or types of electrical fault could result in irreversible damages not only to the electrical system but to the front line technical personnel as well. This dissertation will cover two major electrical faults, 1) short-circuit fault and 2) overcurrent fault, which commonly occur in the low voltage distribution system. Through study and understand their causes and fault behaviors, three different conceptual and non-destructive electrical fault detection or recognition approaches, i) Automatic Detection System (ADS), ii) Logical Analysis System (LAS) and iii) Waveform Signature Recognition (WSR), will be experimented or simulated. Through address their advantages and disadvantages, the best approach method will be promoted to integrate with the existing BAS. In short, at the end of this dissertation, a whole new concept of Fault Recognition System (FRS) will be developed and integrated with existing Building Automatic System (BAS). The aim of the integration is not only possible to reduce the downtime during electrical fault occur, but also can promote workplace safety. The implementation of the concept could be the new benchmark for tomorrow BAS industries.

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