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Rotor eccentricity in permanent magnet synchronous motors (PMSMs) increases unbalanced magnetic pull and motor vibration resulting in accelerated aging of motor components. If eccentricity remains undetected, it can increase in severity, and increase the risk of stator-rotor contact, which causes forced outage of the motor and driven process. Detection of eccentricity currently relies on off-line...
Condition monitoring (CM) of gearbox is a crucial activity due to its importance in power transmission for many industrial applications. Monitoring temperature is an effective mean to collect useful information about the healthy conditions of the gearbox. This study investigates the use of a novel wireless temperature node to monitor and diagnose different faults on a gearbox transmission system under...
This paper proposes a methodology to be used in the segmentation of infrared thermography images for the detection of bearing faults in induction motors. The proposed methodology can be a helpful tool for preventive and predictive maintenance of the induction motor. This methodology is based on manual threshold image processing to obtain a segmentation of an infrared thermal image, which is used for...
The failure of power converters is currently the main reason of stopping for wind turbines. The unpredictable nature of wind power flow causes temperature swings to the semiconductor devices, which leads to additional thermal stresses and, eventually, unexpected failures. A suitable way to avoid this is using condition monitoring systems, which detect the degradation of the devices and reduce the...
Recent advancements in automotive technologies, most notably autonomous driving, demand electronic systemsmuch more complex than realized in the past. The automotiveindustry has been forced to adopt advanced consumerelectronics to satisfy the demand, and thus it becomes morechallenging to assess system reliability while adopting the newtechnologies. The system level reliability can be enforced byimplementing...
This paper presents the results obtained from fibre Bragg grating (FBG) sensors integrated into a railway current-collecting pantograph for accurate measurement of contact force and contact location when it is subjected to various temperature conditions. The temperature change of the pantograph is simulated, at the industrial laboratory of Brecknell Willis in the UK, by changing the DC current applied...
Present Wind mills have certain limiting factors. Most of the wind farms are located quiet far from the power utilizing areas; Monitoring and controlling of such farms are very tedious. Wind farms may be located far inside the sea, may be between the mountains, or Forests. Thus when minor faults occur, the people have to go to that particular location for fault clearing. It requires lot of man power,...
The paper deals with an effective method for early detection of leakage and leakage -points in SF6. based Gas Insulated Switchgears. SF6 is widely in use since it is most suitable gas accepted for high voltage applications due to excellent dielectric properties, high thermal conductivity, fast arc quenching. The pressure and density inside Gas Insulated Switchgear are dependent upon dielectric properties...
In the context of underground cavern facilities, electrical power substation is now located underground instead of the conventional aboveground. The operating environment of power system has therefore changed, which may directly degrade the heat dissipation capability of the power system. A condition monitoring and reliability analysis of power facilities for underground substations in high humidity,...
Reliable operation of the switchgear is essential for delivery of electric power to the end users. Poor connections and insulation degradation are the two major causes of arc-flash in the switchgear. This paper evaluates the non-intrusive measurement and performance of thermal ionization detector (TID) in the low voltage (LV) air insulated switchgear. The sensitivity analysis of the sensor is done...
Power curve (PC) monitoring can be applied to evaluate the wind turbine generator (WTG) power output and detect deviations between the expected and the measured value, often a precursor of unexpected faults. In this research, the instantaneous SCADA data is used to show the fault forecast ability of Artificial Intelligence (AI) based PC monitoring of a pitch regulated WTG. The measured PCs illustrate...
Insulating oils are widely used in power transformers. The oil insulation degrades under multiple stresses during the transformer operation, which affects the insulation integrity and consequently could cause transformer failures. DC resistivity is one of the dielectric parameters of insulating oil for assessing transformer insulation conditions. This paper presents results of DC resistivity measurements...
This paper summarizes the current situation of the domestic and foreign power distribution switch cabinet sensing and monitoring technology. In view of the application occasions and different conditions of various kinds of PD monitoring how to select the detection method, according to the equipment to determine the status of the device to determine whether the PD present, that is combining with the...
As we know that energy is important part of our life. Energy available in different form like heat energy, solar energy, wind energy, etc. In our day to day life importance of alternative and renewable energy source increases year by year because of limited availability of non-renewable energy source. Hence it is necessary to take preventive action and increase the use of renewable energy source....
This paper considers the problems of condition monitoring and fault detection in an existing solar photovoltaic (PV) plant in Australia. A PV prediction model is proposed to accurately model the PV plant output. This model is then used with three condition monitoring and fault detection methods. The considered methods involve comparison of measured and modeled voltage and current ratios with appropriate...
Machine Condition Monitoring (MCM) is an important topic for the reliability of industrial machines in increasingly interconnected production facilities. The analysis of a huge amount of data to get information about the machine's condition is a difficult challenge. Current solutions for these analyses are often very specific, need a lot of manual configuration or are difficult to apply. In this paper,...
Tool Condition Monitoring is very fundamental part of the Manufacturing industry similar to the automation and hence has a great importance in research based on manufacturing engineering. Many of the people those concern with the manufacturing industries are interestedly study the TCM as successful unmanned automation in production is only possible if there is presence of good tool wear monitor and...
Collaboration with the Electricity Authority of Cyprus (EAC) and the University of Cyprus (UCY) has allowed development of an experiment in a distribution substation. Temperature condition monitoring units were installed on selected underground cable joints within MV sub-station in Cyprus. Real-time current loading data, weather conditions as well as surface temperature by the cable joints are used...
Condition monitoring has become significant and inevitable for look after of electrical system, and has engrossed more and more attention globally. The no physical contact property of non-destructive condition monitoring techniques is now very significant and essential at diverse industrial process. Though, accessibility of CM methods are multiple for distinct problems such as partial discharge, thermal...
Third harmonic resistive leakage current and thermal imaging was commonly used as tool for monitoring and assessing the zinc oxide surge arrester condition. However, the measuring of leakage current on-site is highly influenced by electromagnetic interference (EMI) and caused difficulty to get accurate measurement. Thermography technique can be used to measure temperature of ZnO arrester without interfered...
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