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Direct Current in the home

PeterRT

With more and more in the home being powered off DC (Direct Current) supplies, e.g. Battery & Solar Panels, then wouldn't it be more economical to consider extending the regulations to cover DC in the home avoiding the need for transformers?

For example, this is particularly appropriate now that lighting is dominated by LED.

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    I don't think DC distribution in the public network is being considered at present (never say never, though, <snip>)

    Never say never indeed -  I am aware of an experiment in London, and there may be other high demand areas trying the same thing, where a DC bus of about 800v is linked between 2 substations each having a high power and reversible inverter, so that an under-loaded substation can prop up one or more of the phases on whichever substation is feeling most overloaded. Similar experiments  but  complicated by the addition of a DC car charge point or two to the DC bus instead are either underway or in the offing.

    Western Power's ‘DC share’ is a related idea for car charging.

    DC Share is a network equalisation solution designed to share system capacity across AC secondary substations with different load profiles. The available power will then be distributed to vehicle charge points via a new high capacity DC cable network to enable EV rapid charging, without traditional reinforcement.

    Still early days, but interesting reading

    Mike.

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  • 0

    I don't think DC distribution in the public network is being considered at present (never say never, though, <snip>)

    Never say never indeed -  I am aware of an experiment in London, and there may be other high demand areas trying the same thing, where a DC bus of about 800v is linked between 2 substations each having a high power and reversible inverter, so that an under-loaded substation can prop up one or more of the phases on whichever substation is feeling most overloaded. Similar experiments  but  complicated by the addition of a DC car charge point or two to the DC bus instead are either underway or in the offing.

    Western Power's ‘DC share’ is a related idea for car charging.

    DC Share is a network equalisation solution designed to share system capacity across AC secondary substations with different load profiles. The available power will then be distributed to vehicle charge points via a new high capacity DC cable network to enable EV rapid charging, without traditional reinforcement.

    Still early days, but interesting reading

    Mike.

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