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Dear Cypher007,
In your own home you have, electrically speaking, a complex network of sources of power (the mains supply, your PV panels and inverter), stored energy in rotating electrical machines, and various loads - resistive, reactive and waveform switched (ie by dimmers and your immersion heater element diverter).
And by the sounds of it a 'weak' distribution line perhaps with faults and also for added measure a garage (for servicing cars?) operating electric tools, compressors, arc welding, car lifts, etcetera.
All this means that from what might seem like a simple electrical event - the switching on/off of a resistive load for example not just in your own home but without - electrical interactions are taking place leading to voltage disturbances.
I still think the way ahead is first to await WP's investigation. But if their remedial work does not stop the problem try substituting a conventional incandescent lamp for one of your LED lamps to see if the flickering stops on that circuit but not the others. If it does try then the CAPLOAD or RESLOAD on your LED circuits to see if that/they stop the flickering. Give DANLERS technical help-line a ring for advice on what to purchase.
If all fails then I think you are at the stage of buying a voltage regulator. Again, this requires an electrician to select a suitable regulator and then to install, because one must take into account your PV supply, immersion diverter and large ohmic loads eg: Shower, cooker, heaters, kettle.
Please keep the Electricians' Forum up dated on progress. Apart from the interest it is how we all learn from each others experience.
PS: Your PV inverter behaves like an synchronous alternator and so has a 'load angle' which I called D in my earlier think-piece. It will be leading when generating and feeding in to the grid. However, when there is a sudden change in load (or pv generation) the load angle will hunt briefly until a new equilibrium is established. Another source of electrical oscillations.
In your own home you have, electrically speaking, a complex network of sources of power (the mains supply, your PV panels and inverter), stored energy in rotating electrical machines, and various loads - resistive, reactive and waveform switched (ie by dimmers and your immersion heater element diverter).
And by the sounds of it a 'weak' distribution line perhaps with faults and also for added measure a garage (for servicing cars?) operating electric tools, compressors, arc welding, car lifts, etcetera.
All this means that from what might seem like a simple electrical event - the switching on/off of a resistive load for example not just in your own home but without - electrical interactions are taking place leading to voltage disturbances.
I still think the way ahead is first to await WP's investigation. But if their remedial work does not stop the problem try substituting a conventional incandescent lamp for one of your LED lamps to see if the flickering stops on that circuit but not the others. If it does try then the CAPLOAD or RESLOAD on your LED circuits to see if that/they stop the flickering. Give DANLERS technical help-line a ring for advice on what to purchase.
If all fails then I think you are at the stage of buying a voltage regulator. Again, this requires an electrician to select a suitable regulator and then to install, because one must take into account your PV supply, immersion diverter and large ohmic loads eg: Shower, cooker, heaters, kettle.
Please keep the Electricians' Forum up dated on progress. Apart from the interest it is how we all learn from each others experience.
PS: Your PV inverter behaves like an synchronous alternator and so has a 'load angle' which I called D in my earlier think-piece. It will be leading when generating and feeding in to the grid. However, when there is a sudden change in load (or pv generation) the load angle will hunt briefly until a new equilibrium is established. Another source of electrical oscillations.
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