Classification
Which is included in telecommunications for electric power industry is all telecommunications facilities required in the management of electric power companies, including concerning the provision and needs, operations, security and maintenance. The telecommunication network is the nervous system in the management of the company. The more advanced the company increasingly important for facilities that reliable and fast communication.
Telecommunication systems can be divided into communication for load (load-dispatching), for maintenance and for administrative purposes.
Communication on Burden Sharing
Communication for burden sharing is used to allow the sharing of the burden of rapid and uninterrupted. Hence the importance of telecommunications for this task, then the system should not be used in conjunction with other purposes. Instead, there should be also a backup system.
In a state of disruption in power systems, natural disasters or other disasters, telecommunications systems should still be able to work perfectly.
Telecommunications facilities are suitable for burden sharing of radio communications, telecommunications carrier via PLC, etc.
Communications for Maintenance
Communications for the purpose of maintenance for communication between the electrical center (picket distribution), distribution substations, distribution channels, and others. It is usually used for telecommunications with a wire for small power systems and telecommunications with radio or power line carrier (PLC) for large power systems. Car radio communication is very useful in the maintenance of distribution channels.
Communications for administrative Purposes
Communications for administrative purposes is used in communications between headquarters, regional offices and branch offices. Often the communication channel used for maintenance also for administrative purposes. Sometimes it is used for the purposes of this last is a backup communication channel to the tasks earlier.
Telecommunication channels
Using wire communication is not suitable for use on a circuit that is critical or distant, because the great influence of the hurricane, typhoon, flood, interference from power lines, etc. to wire communication. Nevertheless, this type of communication is still used in short distances due to economic considerations. Communication with the cable used because its stability is more assured than the communication via the airways. The disadvantage is that the communication cable is more expensive and more difficult if there is damage. Air ducts can be mounted on poles specifically for him and can also be mounted on poles that are also used for other purposes, such as distribution poles. The latter is of course cheaper.
Transmission Systems
Communication with wire consists of two systems, namely voice transmission systems and transmission system carrier. The first channel for the flow of communication in accordance with the frequency of the sound, while the second channel after changing the frequency of the sound into frequency carrier wave. Normally area for communication carrier frequency is 3-60 kHz with a number of talk channels 1-3. For communication carrier can be used air and cable channels. However, in the electric power industry and the PLC communication with carrier radio communication is more popular.
Communication with Power Line Carrier
Telecommunications carrier power lines (power line carrier, abbreviated as PLC) is a communication in which the current (carrier current) superimposed (superposed) on a power transmission line, so that channel this energy into a high-frequency transmission circuit. Reach frequency is different for each country, but the greatness roughly ranged between a few dozen to 500 kHz. To enable communication in this way is efficient, that is where the characteristic distribution of signaling via the carrier combined with the characteristics of the high-voltage power distribution, required equipment hook (line coupling equipment).