Grid problem ?

Some of my customers have L.E.D. outside bulkhead lights that I installed for them. The lights are P.I.R. activated after darkness, but have a feature to turn them on continually by switching them OFF-ON-OFF-ON within 3 seconds at a functional switch. They then turn on continually until it gets light in the morning, at which point they revert to a totally automatic operation.


Some customers are complaining that their lights are on continually, even in the case where one light has no operational switch. Mains disturbances perhaps? There again some customers may be confused, if after dark breezes cause the light to come on, or even a passing cat for example. But one lady was convinced that the light was permanently on.


"Dynamic demand appliances would react to this very same signal. When the needle is to the left, they would be more likely to switch off, reducing the load on the grid and helping to restore the balance. When the needle is to the right, they would be more likely switch on, using up the excess power. Millions of such devices acting together would act like a huge, fast-reacting back-up system."


Wouldn't the additional automatic turning on and off of appliances due to main's frequency changes de-stabilize the grid and make it too wobbly. The grid would be trying to supply the vastly changing load base, even worse regarding demand that at present. All dynamic demand appliances switching on and off in unison. 


Z.

Some of my customers have L.E.D. outside bulkhead lights that I installed for them. The lights are P.I.R. activated after darkness, but have a feature to turn them on continually by switching them OFF-ON-OFF-ON within 3 seconds at a functional switch. They then turn on continually until it gets light in the morning, at which point they revert to a totally automatic operation.


Some customers are complaining that their lights are on continually, even in the case where one light has no operational switch. Mains disturbances perhaps? There again some customers may be confused, if after dark breezes cause the light to come on, or even a passing cat for example. But one lady was convinced that the light was permanently on.


"Dynamic demand appliances would react to this very same signal. When the needle is to the left, they would be more likely to switch off, reducing the load on the grid and helping to restore the balance. When the needle is to the right, they would be more likely switch on, using up the excess power. Millions of such devices acting together would act like a huge, fast-reacting back-up system."


Wouldn't the additional automatic turning on and off of appliances due to main's frequency changes de-stabilize the grid and make it too wobbly. The grid would be trying to supply the vastly changing load base, even worse regarding demand that at present. All dynamic demand appliances switching on and off in unison. 


Z.