Load management: Difference between revisions

Content deleted Content added
Comparisons to demand response: | Alter: template type. Add: pages, year, title, chapter, isbn, doi, author pars. 1-2. Removed URL that duplicated unique identifier. Converted bare reference to cite template. Formatted dashes. | You can use this tool yourself. Report bugs here. | via #UCB_Gadget
m I have included Australia and New Zealand part of the same group as we use the same equipment and follow the same electrical wiring rules called the AS/NZ 3000.
Line 86:
}}</ref>
 
===Australia and New Zealand===
[[File:NZ household ripple control receiver.JPG|thumb|A ripple control receiver fitted to a New Zealand house. The left circuit breaker controls the water storage heater supply (currently on), while the right one controls the nightstore heater supply (currently off).]]
Since the 1950s, Australia and New Zealand hashave had a system of load management based on ripple control, allowing the electricity supply for domestic and commercial water storage heaters to be switched off and on, as well as allowing remote control of nightstore heaters and street lights. Ripple injection equipment located within each local distribution network signals to ripple control receivers at the customer's premises. Control may either done manually by the local distribution network company in response to local outages or requests to reduce demand from the transmission system operator (i.e. [[Transpower New Zealand Limited|Transpower]]), or automatically when injection equipment detects mains frequency falling below 49.2&nbsp;Hz. Ripple control receivers are assigned to one of several ripple channels to allow the network company to only turn off supply on part of the network, and to allow staged restoration of supply to reduce the impact of a surge in demand when power is restored to water heaters after a period of time off.
 
Depending on the area, the consumer may have two electricity meters, one for normal supply ("Anytime") and one for the load-managed supply ("Controlled"), with Controlled supply billed at a lower rate per kilowatt-hour than Anytime supply. For those with load-managed supply but only a single meter, electricity is billed at the "Composite" rate, priced between Anytime and Controlled.