The recent controversy surrounding the issue of high household voltage leading to high electricity bills
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Recently, there have been rumors that the power utility raised the voltage supplied to households, resulting in a sharp increase in residential electricity bills in January. Some posts even included photos of measured voltage levels, which ranged from just over 240 volts to an astonishing 280 volts. As a non-professional electrical engineer, I always think it’s just a rumor. Is it that easy for power companies to increase the voltage supplied to households? Dear professional electrical engineers, please share your thoughts. Thank you
We won’t discuss whether the equipment can handle such conditions; based on basic junior high school physics principles, since W=UI, when power remains constant, a higher voltage results in a lower current. Therefore, there is no issue with raising the voltage in order to charge more for electricity.
Recently, electricity prices have gone up. But it’s not that the voltage was increased; rather, it was decreased?
Going back to floor 1, the assumption that ‘power remains constant’ is incorrect, right? For a pure resistive load, power = voltage squared/resistance. What I’m asking is whether it’s that easy for the power supply department to temporarily increase the voltage supplied to households?
It’s not that easy, right? What is the adjustable range of the transformer? 355~415? Furthermore, if the output power of the generator remains unchanged, then the actual electricity consumption won’t change either. 240V should be the highest voltage output by the transformer; how could it rise to 280?
I also think it shouldn’t be that easy for the power supply company to temporarily increase the voltage supplied to households; if the 220V voltage is increased by 10%, then the high-voltage side also needs to be increased by 10% – good heavens. Let the experts weigh in
This question was nonsense spoken by people who don’t understand electrical meters. What is the source of power that drives the meter to count energy consumption? It depends on the magnitude of the current flowing through the load, rather than the strength of the magnetic field. As long as the voltage of the coil is above a certain value, a sufficiently strong magnetic field can be maintained. Increasing the voltage has an effect, but it should be very minor.