When we talk about interference in our electrical network, we will probably come across a phenomenon that can alter the proper functioning of our electronic devices and the entire system, the so-called electrical noise. Electrical noise can be a problem important for our day to day, but there are different ways to correct it. To do this, we must know well what it is and how it is generated.
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What is electrical noise?
Electrical noise is a phenomenon that can affect any electrical installation, specifically
devices connected to the network and communication systems. It refers to the no signs
Desired and random waves produced by the magnetic fields generated by the equipment
electrical, power supplies and practically any element through which it circulates
corrients. These unwanted signals can “leak” the network and reach other devices on the network.
same. This means that, for example, if we have a wiring system in our factory in the
which "leaks" energy, can reach a computer and produce changes in its operation.
What is the source of electrical noise?
Electrical noise can come from various sources, both internal and external to electronic devices.. The most common sources of electrical noise are all those that generate electrical energy: motors, transformers, and electronic circuits (power supplies, photovoltaic modules, etc.). Therefore, the biggest source from which we can have electrical noise is the network itself, since it is made up of thousands of "small" electricity generators. The formation of magnetic fields at frequencies of 50-60 Hz with the passage of current through conductors and electrical elements favors the propagation of electrical noise between the different systems.
Other secondary sources of electrical noise are intensity variations caused by connection/disconnection of high consumption loads and the action of meteorological effects such as lightning, causing these distortions even over long distances.
How can electrical noise affect an industrial environment?
In an industrial facility, having high consumption and a large number of devices
electronics and telecommunications systems, it is very likely that this electrical noise will appear. These are some of the problems that these distortions can cause to our facilities:
- Interference in video systems
- Buzzing in audio systems
- Hang up on PCs
- Uncomfortable and unhealthy phenomena in lighting systems: dimming, "flicker", etc.
These phenomena can damage the devices or even lead us to think that they are damaged when this is not the case and it is a problem with the network itself.
How can we avoid electrical noise?
There are a number of methods that can help us mitigate this problem and prevent electrical noise from affecting our facilities and if it does, to a lesser extent:
Shield on the wiring
It consists of enclosing the electronic components in metal casings or shields to block external electromagnetic fields, preventing the current from being contaminated.
Proper grounding
It consists of connecting electronic devices to a common ground to reduce the
potential difference between them. In a conventional installation in Spain, which includes a
photovoltaic installation we can have more than two independent earths (fittings, neutral,
photovoltaic installation, generator set…). Having proximate elements connected to different
these grounds can cause major electrical noise problems.
Electrical filters or suppressors
Filters are designed to attenuate specific frequencies of electromagnetic interference, while suppressors are designed to absorb or redirect energy from transient voltage spikes. Both filters and suppressors can be installed on electrical currents, signal currents, or between electronic components to reduce electrical noise.
To these conventional methods, intelligent batteries are added, being capable of
solve the problem and not depend solely on the previous points, adding the possibility of
store energy and make smart consumption.
Electrical noise in a self-consumption photovoltaic installation
Electrical noise from the network in Spain is regulated by the Red Eléctrica itself
Spanish (REE). There are certain values of electrical parameters that REE and the distributors themselves
they should keep under penalties in case of excessive noise.
However, a self-consumption photovoltaic installation is isolated from the grid and can
create these distortions without any kind of regulator outside the installation. Investors, wiring,
magnetic fields, have all the elements likely to create electrical noise.
So, on the one hand, we have electrical noise that can come from the network (although they manage the
distributors there may be specific moments that damage equipment) and noise that may come from
our own sources of generation. What can help us to avoid this problem in
our facility?
How a smart battery can solve electrical noise?
The use of smart batteries how the Pixii Powershaper 2 in our industrial photovoltaic installation can help us solve this problem and keep the network as less polluted as possible. It has network parameter profiles for many countries throughout the world, and is capable of adapting these measured network parameters (frequency, voltage, power factor, etc.) according to the chosen profile. These profiles are completely customizable, being able to create our own electrical microgrid with our desired parameters.
The Pixii Powershaper 2 Battery is capable of reducing voltage and current harmonics, thus avoiding performance losses or technical problems in our facilities that would in turn entail unexpected expenses. Coupled with this, this type of battery can regulate the voltage and frequency to ensure stability between generation/charge periods and balancing the phases from the point of view of generation.
Avoid electrical noise in your company
At Pebblex we distribute the latest generation smart batteries Pixii Powershaper 2 that can help you optimize your electrical network and solve annoying electrical noise problems in your photovoltaic installation. Whether you want to start a photovoltaic project or want to optimize the one you already have, our experts will not hesitate to help you implement these batteries and make the most of them.
