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Methods for Adding Demand Response Capability to a Thermostatically Controlled Load with an Existing On-off Controller
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 Title & Authors
Methods for Adding Demand Response Capability to a Thermostatically Controlled Load with an Existing On-off Controller
Jin, Young Gyu; Yoon, Yong Tae;
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A thermostatically controlled load (TCL) can be one of the most appropriate resources for demand response (DR) in a smart grid environment. DR capability can be effectively implemented in a TCL with various intelligent control methods. However, because traditional on-off control is still a commonly used method in a TCL, it is useful to develop a method for adding DR capability to the TCL with an existing on-off controller. As a specific realization of supervisory control for implementing DR capability in the TCL, two methods are proposed - a method involving the changing of a set point and a method involving the paralleling of an identified system without delay. The proposed methods are analyzed through the simulations with an electric heater for different power consumption levels in the on-state. Considerable cost benefit can be achieved with the proposed methods when compared with the case without DR. In addition, the observations suggest that a medium power consumption level, instead of the maximum power, in the on-state should be used for consistently obtaining the cost benefit without severe temperature deviation from the specified temperature range for DR.
Demand response;Thermostatically controlled load;Dynamic set point;Dynamic programming;Real time pricing;
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