SMART GRID PLC THE SOURCE OF THE GLOBAL NOISE POLLUTION-RADIATING IN OUR AIR, EVERYWHERE!

There are many issues dealing with noise in the smart grid technology that engineers knew of before hand.  Years prior the industry tried out pilots with BPL and it was always a distaster, because of the interference and noise pollution.  Did this stop the industry?  NO!, BECAUSE THEY ARE DESPERATE AND REALLY HAVE NO SOLUTION TO FIX THE PROBLEM THAT IS NOW A WORLD WIDE PUBLIC HEALTH HAZARD.  THIS ONE OF HUNDREDS OF PAPERS ON THE SUBJECT OF NOISE ISSUES, ATTENUATION ISSUES IN THE LAST MILE.  OUR ELECTRIC COMPANY, NATIONAL GRID HAD TO INSTALL TONS OF REPEATERS IN OUR RURAL TOWN SO THE RF SIGNAL READING THE SMART METERS WOULD REMAIN CONTANT AND STRONG 24/7!!!  THIS IS WHEN THE NOISE STARTED AND IS BLASTING IN OUR AIR EVER SINCE THEY TURNED ON THE SMART GRID IN OUR TOWN. 

The Design Issues

While PLC is convenient and can save money, it has its limitations. First, the medium was designed to carry 50- or 60-Hz ac but is unfriendly to higher frequencies. Higher-frequency carrier signals are severely attenuated. This limits the range of any transmission.

Second, such high-frequency signals must sometimes be transmitted through a transformer. Power-line step-down transformers also introduce extreme attenuation to any modulated carrier. Furthermore, modulated carriers may have to bridge from one ac phase to another, complicating the transmission.

other devices. The home LV line also may be used for high-speed data.

Attenuation averages 10 to 30 dB/kilometer on LV lines (< 1 kV) and about 100 dB/km on MV and high-voltage (HV) lines (>10 kV), not including phase bridging or transformers. The attenuation varies widely with the frequencies used, modulation methods, transmission line length, and noise conditions at different times of day.

Also, power lines carry a considerable amount of noise generated by switching transients, lightning, appliances (hairdryers, toothbrushes, shavers), anything with a motor (vacuum cleaners, dishwashers), switch-mode power supplies, fluorescent lights and compact fluorescent lamps (CFLs), light dimmers, TV sets, and other loads that aren’t filtered. Harmonics from the ac line can interfere with any transmitted signal as well. Such low-level noise generally causes noise of several volts or more.

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