Thesis (Msc) - Cyprus International University. Institute of Graduate Studies and Research Electrical-Electronic Engineering

Includes bibliography (sheets 65-68)

In residential or industrial underground cables, there are possibilities of failure along the line which occurs due to several reasons. This research helps to explain how a Wireless underground sensor network (WUSN) can be used to monitor a cable's temperature at specific points along the line by using the temperature sensor principle. Traditionally, the approach applied in monitoring cable health often involves periodic inspections and manual measurements, which can be time-consuming and not particularly practical in extensive underground networks. Wireless underground sensor networks can provide real-time insights into underground cable conditions by providing a stimulating edge in cable inspection and its environment. Several processes were involved in achieving results in this research. Mathematical simulation of Kennelly's hypothesis of underground cable equation for different sizes of single underground cables such as 150mm2, 185mm2, 240mm2, 300mm2, 400mm2, 500mm2, 630mm2, 800mm2, and 1000mm2. where carried out with MATLAB, to get the exact cable electrical parameters of the outer serving jacket for each cable. MATLAB Simulink is also used to design the diagram of the WUSN to achieve the desired results. The simulated diagrams were designed in three major sectors as follows; monitoring of the underground cable's temperature of the serving jacket when the underground cable is within a steady state temperature of 20 o C, when the cable is below a normal underground cable temperature of 105o C and when the cable is above normal temperature of the serving jacket when irregularities like temperature above normal are detected, sensors transmit corresponding signals to a central display system, which analyzes data and provides usable insights. At a temperature above 105o C in a sensor of a single state design and 945o C in a nine positions sensor design, there will be an alarm beep that will notify that there is an increase of temperature above normal at a particular point and the information will be shown on a display device. It allows operators to make informed decisions, thus preventing sudden power failures and protecting the cable that may damage valuable equipment