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Paper Title : POWER GRID FAILURE DETECTION BASED ON VOLTAGE AND FREQUENCY VARIANCE DETECTION

ISSN : 2395-1303
Year of Publication : 2021
10.29126/23951303/IJET-v7i3p5

Authors: Shweta Pawar, Jaiee patil, Krushita Ambhire, Jijesh Hambire

         


Abstract
- - In present-day power system, electrical energy from the generating station is delivered to the supreme consumers through a huge network of transmission and distribution. There are many power generation units connected to the grid such as hydro, thermal, solar, wind, etc. to supply power to the load. Thus, for successful operation of loads, it is desirable that consumers are supplied with constant voltage and frequency. In this paper we present a system which can detect the synchronization failure of any external supply source to the power grid on sensing the abnormalities in frequency and voltage. For attainable transmission, the frequency and voltage of the AC supply should be within the limits as decided by the grid, depending upon the needs of the power supply. According to the CENTRAL ELECTRICTY AUTHORITY OF INDIA Regulations 2010, variation of the system voltage should be of +- 5 % and that for frequency close to 50 Hz and should not allow it to go beyond the range 49.2 to 50.3 Hz or a narrower frequency band specified in the Grid Code, except during the transient period following tripping. In case these limits are surpassed and the demand for power is more than the demand for supply, it results in grid failure. In such situations, the feeder unit is completely detached from the grid, causing islanding situation. Thus synchronization is needed between the grid and the feeder unit, so as to avoid the major scale brown out or black out of the grid power. In this paper, we are introducing a system which can notify the grid in advance so that alternate arrangements are kept on standby to avoid complete grid failure

Reference
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Keywords
--Islanding, Grid, Microcontroller,Synchronization