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South Africa's energy crisis (or load shedding) is an ongoing period of widespread national power outages beginning at the end of 2007. [1] [2] The South African government-owned national power utility, and primary power generator, Eskom, and various parliamentarians have attributed these rolling blackouts to insufficient generation capacity. [3]
Proper load management by the utility allows them to practice load shedding to avoid rolling blackouts and reduce costs. Ripple control can be unpopular because sometimes devices can fail to receive the signal to turn on comfort equipment, e.g. hot water heaters or baseboard electrical heaters.
A room during load shedding at night in West Bengal, India. A rolling blackout, also referred to as rota or rotational load shedding, rota disconnection, feeder rotation, or a rotating outage, is an intentionally engineered electrical power shutdown in which electricity delivery is stopped for non-overlapping periods of time over different parts of the distribution region.
Some transfer switches allow for load shedding or prioritization of optional circuits, such as heating and cooling equipment. More complex emergency switchgear used in large backup generator installations permits soft loading, allowing load to be smoothly transferred from the utility to the synchronized generators, and back; such installations ...
The demand, or load on an electrical grid is the total electrical power being removed by the users of the grid. The graph of the demand over time is called the demand curve. Baseload is the minimum load on the grid over any given period, peak demand is the maximum load. Historically, baseload was commonly met by equipment that was relatively ...
When the loss of load happens (generation capacity falls below the load), utilities may impose load shedding (also known as emergency load reduction program, [23] ELRP) on service areas via targeted blackouts, rolling blackouts or by agreements with specific high-use industrial consumers to turn off equipment at times of system-wide peak demand.
This page was last edited on 6 January 2017, at 05:28 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Intentional islanding divides an electrical network into fragments with adequate power generation in each fragment to supply that fragment's loads. [7] [8] In practice, balancing generation and load in each fragment is difficult, and often the formation of islands requires temporarily shedding load.