REMOTE CONTROL OF REMOTE POWER GRID FACILITIES BASED ON GSM COMMUNICATION, IN CONDITIONS OF A WEAK SIGNAL FROM A BASE STATION

Abstract

The article considers the problem of organizing remote control at remote electrical substations without permanent maintenance personnel. The insufficient number of maintenance personnel at power facilities, which has been observed recently, greatly complicates their operation. The solution to this problem is considered to be the implementation of a remote control and equipment monitoring system based on industrial Ethernet, but at some remote facilities there are difficulties with the implementation of such systems due to the peculiarities of their location and terrain. To solve this problem, we will consider the use of wireless technologies, namely the use of a radio channel and various methods of using GSM communication to organize remote control using the example of one substation, which is far from the dispatching station on the outskirts of the city. Wireless technologies have both positive features and disadvantages, especially if the facilities are located in areas with a weak signal or a large number of obstacles. The article considers the justification for choosing the optimal technology for transmitting control commands in conditions of a weakened signal, and also measures the level and quality of the signal for using LTE or DTMF technology in organizing remote control of a remote electrical substation. The justification for choosing the principle of transmitting control commands using DTMF (Dual Tone Multi-Frequency) technology is provided. The creation of a control system based on DTMF technology is considered, as well as protection against erroneous actions when using a mobile phone in the event of a failure of the control panel. Ensuring protection against unauthorized interference in the operation of the device. The method of forming commands in conditions of a possible decrease in the level and quality of the signal is considered.