Abstract
Stand-alone off-grid power supply system is a necessity for applications when electrical power distribution network is inaccessible. Internal and external subject security aspects should be valued, and the system should be optimized to obtain properly working, never-failing and secure local electrical power supply system. Internal security aspects result from both security concept and used technologies. Internal threats contain fire ignition, flooding, electrical cables melting and other threats arising from intrinsic materials or subsystems characteristics, at standard conditions of use. Additional external aspects include anti-theft protection, breaking doors or windows signaling and countermeasure, weather extremes alert, etc. Both internal and external aspects necessarily induce additional off-grid power system or subject monitoring that might be performed by supervising security subsystem. This paper provides a solution for off-grid security subsystem. It consists from pervasive sensor circuits, fuzzy controlled diagnostics and executive actuators. Cooperated fuzzy logic diagnostic and control device enables to evaluate anticipated threats and dynamically generates the most appropriate decisions about real threat existence that leads to improvement of system protection. Proposed fuzzy rules are particularly discussed in the paper.
Highlights
In mountainous European environment, many chalets or cottages as well as telecommunication facilities are powered by off-grid power source
Offgrid electrical power supply system consists of electrical power source essential parts: photovoltaic panel subsystem or wind-power plant, fuel or gas generator, or
To reduce anti-theft false alarms, vibrations induced by vehicle drive might be eliminated using combinac 2014 ADVANCES IN ELECTRICAL AND ELECTRONIC ENGINEERING
Summary
In mountainous European environment, many chalets or cottages as well as telecommunication facilities are powered by off-grid power source. Tion of several detectors (e.g. outdoor detectors: subject detectors – namely accelerometers; line detectors like fence, underground or stoppage vibrations detection cables or sensors; area and whole-space detectors – mostly microwave, laser, infrared, or camera detectors), and optimized assessment system [5], [8], [9] and [13] Such compound data stream coming from sensor arrangement system allows fuzzy logic to increase correct decisions probability (i.e., to activate an alert when threat occurs and, to suppress alert processes when a false alarm occurs). Proposed cooperated fuzzy logic control device should evaluate anticipated threats and dynamically generate the most appropriate decisions about real threat existence that leads to improvement of off-grid system protection To achieve such objectives, control subsystem is designed, optimized and tested in LabVIEW that contains a powerful optimizing compiler to optimize proposed block diagram [12]
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