There is no doubt the noise on the power lines is caused by The smart grid PLC or power line communication. Nothing is being done about it for the same reason Flint, Michigan water issue was ignored by the State and Federal Agencies. They did nothing!!!! There is no difference here. Massachusetts is guilty of the same abuse. They are aware the noise pollution and the evidence proving the Electric utilities is in violation of Massachusetts noise regulations and have done nothing to act….Sandaura
In Search of 100% – The Meter Communication Conundrum
Communication noise and barriers to stability
There are a number of communication technology options from power line communication (PLC), mobile broadband to radio. Each by their nature will suffer from communication noise particularly in the extreme environment of meter data which has to navigate its way through domestic noise, electric noise and all forms of radio noise.
All carrier options have the same goal: to communicate meter data in a reliable fashion. But, with the ever increasing noise levels, technology solutions need to be found to block this interference particularly as the noise is often created outside of the power plants’ and utilities’ control.
Assessing the technologies for data transmission
As the primary function for power lines is the delivery of electricity – which is unlikely to change – this complex and noisy environment causes various forms of interference in PLC which can result in unstable communications. For PLC, electrical noise is created by various in-home devices and gadgets like TVs and fridges and these will impact the noise level on communication lines. As the level of in-home technology increases, more noise will be generated. Therefore, solutions must be able to accommodate for this type of noise in general since it is bound to increase in the future. The interference factors include:
Huge load-impedance variations: Load-impedance changes will affect PLC signal voltages coupled onto the power lines, which directly impacts the transmission distance. Changes in power factor and location of power loads will change load impedances dynamically over time.
Attenuation on selective PLC carrier frequencies: The random switching of electrical devices on a power distribution network may lead to changes in power parameters, resulting in attenuation on PLC signals on selective frequencies. At the same location and instance, this impact may vary across different PLC carrier frequencies. When certain frequencies are unsuitable for PLC, changing to different frequencies for communication might yield better results.
Strong noise interference: Electrical equipment on the power grid, such as switched-mode power supplies and inverters, can produce significant amounts of interference on multiple frequencies that vary randomly.