Demand response (DR) is the ability to control and manipulate demand side loads to turn them off/on or change their consumption based on situation and in response to power quality, system security, voltage and frequency, technical and economic constraints, applied by grid operators. This concept first was introduced by Shweppe et al, in 1980, responding to the need for seeking a faster and more reliable method than the traditional ones, to maintain balance between generation side and demand side. The fundamental difference between demand response and load shedding is Continues demand side contribution. It can have the following benefits:
Decrease the generation side contribution in frequency control.
Reduces the required amount of reserves.
In general, cheaper operation of power systems
Reduces 〖CO〗_2 emission and energy consumption.