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Till the last decades, a million miles of cables are threaded in the air across the country. But currently, it is laid in the underground, which is larger than an earlier method. Because, underground cables are not affected by any adverse weather conditions like pollution, heavy rainfall, snow, and storm, etc.
But, when any problem occurs in cable, it is very difficult to find the exact location of the fault due to not knowing the exact location of the cable. Day by day, the world is becoming digitized so the project is proposed to find the location of the fault in a digital way. When the fault occurs , the process of repairing related to that particular cable is very difficult. The fault of the cable mainly occurs due to many reasons. They are: inconsistent, any defect, weakness of the cable, insulation failure, and breaking of the conductor.
To overcome this problem, here is a project namely an underground cable fault distance locator, used to find the location of the fault for underground cable. Before attempting to find underground cable faults on direct hidden primary cable, it is essential to know where the cable is situated and what direction it takes. If the fault occurs on the secondary cable, then knowing the exact route is even more critical. Since it is extremely difficult to find a cable fault without knowing where the cable is, it makes sense to master cable locating and tracking before start the fault locating process.
The success of fault tracking and locating of an underground cable mainly depend on the skill, knowledge, and experience of that person. Although tracing of the cable can be an intricate job, it will very likely become even more complex as the more underground plant is installed.
It is just as important to understand how the equipment works. This type of fault is better than short circuit fault, because when they open circuit fault occurs, then the flow of current through an underground cable becomes zero. This fault can be occurred by a disruption in the conducting path. Such faults occur when one or more phase conductors break. Short circuit fault can be divided into two types, namely symmetrical and unsymmetrical faults.
Free location methods can be classified into different types that are discussed below. The online method uses and processes the sampled current and voltages to determine the fault points. This method for underground cables is less than the above lines. This method uses a special instrument to test out the service of cable in the field. The offline method is classified into two methods such as the tracer method and the terminal method.
In this method fault of the cable can be detected by walking on the cable lines. The fault location is denoted from the electromagnetic signal or audible signal. This method is used to find the fault location very accurately. Terminal Method The terminal method is used to detect the location of the fault in a cable from one end or both the ends without tracking.
This method is used to find general areas of the fault to accelerate tracking on buried cable. The main concept of this project is to find the distance of underground cable fault from the base station in kilometers. In many urban areas, cable fault is a common problem. When a fault occurs due to some reason, the process of fault tracking without knowing the location related to that particular cable is very difficult.
The proposed system is designed to track the exact location of the fault occurred in the cable. This project uses the Ohms Law concept , when a low voltage DC is applied to the feeder end through a series resistor, then the current would differ based on the location of fault occurred in the cable. In case is there any short circuit occurred from line to ground, then the voltage across series resistor alters accordingly, then it is fed to an analog to digital converter to develop exact data, which the pre-programmed microcontrollers will display in kilometers.
The proposed system is designed with a set of resistors to signifying the length of a cable in kilometers, and the fault creation is designed with a set of switches at every known kilometer KM to cross-check the exactness of the same. The fault happening at a specific distance and the particular phase is displayed on an LCD interfaced to the microcontrollers. Thus, this is all about the underground cable fault distance locator. In the future, this project can be implemented to measure the impedance by using a capacitor in an AC circuit.
Here is a question for you, what are the types of faults? How can we implement it in real time. Like for real underground cables. Where to install this setup?? Hi Alekhya These cables are used for power applications where it is difficult, impractical, and otherwise unsafe to utilize the overhead lines. They are extensively used in compactly occupied urban areas, in factories, and even to supply power from the overhead posts to the consumer premises.
Hi pooja The fault creation is designed with a set of switches at every known kilometer KM to cross check the exactness of the same. The fault happening at a specific distance and the particular phase is displayed on an LCD. This was a good suggestion that you put up here…dude….. Hi Cable TV Thank you so much. I appreciate the efforts you people put in to share blogs on such kind of topics, it was indeed helpful.
Keep Posting! Hi Ya sure, and please follow our blog. Please could you introduce to me where I can get a handy fault locator that can be used in swampy areas that has high voltage? Before you came up with this method s for identifying the exact location of the fault on the undergraound cable, what was the gaps you identified on the other methods.
Underground Cable Fault Locator Underground Cable Fault Distance Locator Before attempting to find underground cable faults on direct hidden primary cable, it is essential to know where the cable is situated and what direction it takes. Share This Post: Facebook. Hi Vivek We are very sorry to inform you that we cannot provide you the code.
Hey great article, I had a good experience reading your article. Thanks for sharing. Thank you for sharing this! Great info!
Plz underground cable fault pre locater requirements What are the limitations of this kind of method in locating the fault. Pls give me documentation of underground cable fault distance locator. Pls help me by giving the documentation for underground cable fault distance locator.
BRIHASPATI SUTRA PDF
Underground Cable Fault Distance Locator Circuit and Working
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ADAC PANNENSTATISTIK 2006 PDF
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ATMEL 89C2051 DATASHEET PDF
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