write a application to the MPB regarding electricity flactuation
class 11
Answers
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In Why do low voltage fluctuations (electricity) occur?
In India, electricity distribution is at 230V for single phase and 415 V for three phase. In a three phase connection, the connection is divided into 3 lines each of 230 V. All appliances sold in India work in the range of 220-240 V. Voltage lower and higher than this range needs to be corrected if the appliance cannot handle that voltage. Voltages at many places in India go down to 150-160 V on a regular basis.
A voltage fluctuation is a systematic variation of the voltage waveform or a series of random voltage changes, of small dimen-sions, namely 95 to 105% of nominal at a low frequency, generally below 25 Hz. its like nonuniform AC signal.
Any load exhibiting significant current variations can cause voltage fluctuations. Arc furnaces are the most common cause of voltage fluctuation on the transmission and distribu-tion system. One symptom of this problem is flickering of incandescent lamps. Removing the offending load, relocating the sensitive equipment, or installing power line conditioning or UPS devices, are methods to resolve this problem.
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Answer:
There can be different causes for this. Loose or corroded connections either at the house or on the powerlines can cause voltage fluctuations. This is often seen as flickering lights.
Low voltage due to overloading on the network, loose connections, or too small a conductor wire carrying power to your house may cause dimming of your lights. In extreme cases, a loose connection can cause electric shocks from metal appliances and surfaces in your home.
Power surges and spikes can be caused by lightning, power switching on the lines, household appliances drawing too much power in either your or your neighbour’s homes, strong winds causing lines to clash, trees touching the line, vehicle accidents involving powerlines, or birds or other animals on the lines.