One of the major thermal power plants from Northern India was living with the problem of an undetected cable fault for over two years on their LT Cable. Since this cable was used for Street lighting and had a backup line which used to power up the street lights, this faulty cable went into the …
Now with OrxaGrid's asset management portfolio, you can do so much more. Credits: https://media.licdn.com/dms For electrical manufacturing companies, ensuring the health and longevity of their cable infrastructure is paramount. Ageing cables pose a significant risk, leading to costly downtime, safety hazards, and reputational damage. Traditional inspection methods are often tedious, time-consuming, and prone to human …
In our previous blog on Dissolve Gas Analysis, we threw the light on basics of DGA like causes of gas formation, types of DGA and various methods used for DGA analysis. In this blog, we will discuss in detail Gas extraction methods and analysis methods. *Photo credit: http://www.vaisala.com Gas extraction from DGA: While conducting a …
The increase in demand for energy has made us enhance the power transformation capacity as well as reactive power compensation requirement. Reliability and availability of important assets play an important role in the smooth operation of a power system. The transformers are vital and expensive assets in a power system hence it is important to …
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Photo credit: https://www.aepgroup.in/ct-pt Instrument transformers are the important equipment of the power system. They are used to serve two main purposes i.e. measurement and protection. The instrument transformers which is used to reduce high currents flowing in power lines to the lower values for measurement and protection are called current transformer. The instrument transformers which …
Continue reading "Primary and Secondary Injection Testing of Instrument Transformers"
Now with SCOPE - OrxaGrid's asset management portfolio, you can do so much more. Introduction Growing distributed generation and the need to have optimal asset management capabilities is leading to new challenges for electricity networks. Electricity networks have transformed from being centralized to distributed, while adapting to the growing needs of customers and service providers. …
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With an increase in demand for electrical energy day by day, electrical installations, structures and systems are also increasing. It is very important to maintain these systems and equipment safely and efficiently. These requirements of the electrical system are fulfilled by the insulating material. The property of insulating material to oppose the flow of current …
Continue reading "Insulation health diagnosis using IR Tester"
Introduction In the previous blog, we discussed the ICM method used for prelocation of the Insulation Failure / High Resistance faults. To find out the distance of insulation failure / Very High Resistance faults in HV to EHV power cables, in which the breakdown voltage is greater than the Surge Generator's voltage the Voltage Decay …
Continue reading "Prelocation of Cable Faults Using Voltage Decay Method"
Blog talks about the technique used in prelocation of Underground faults on cables especially with high resistance
Introduction In our earlier blogs, we discussed the prelocation using the Time Domain Reflectometry (TDR) method, for faults like low resistance, short circuit, ingress of moisture, and open circuit faults. Insulation failure / High Resistance faults cannot be determined using a low voltage source of a TDR or Prelocator instrument. In Mid Voltage (MV) to …
Continue reading "Prelocation of Cable Faults using Secondary Impulse Method"
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