| Description |
One of the main issues with the integration of large amounts of renewable energy sources (RES), such as PV and wind, is their stochastic and highly fluctuating characteristics. This usually results in large variations of power flow in the distribution system which can affect the power quality. One solution for this problem is the use of energy storage units, which are costly and require sophisticated control systems. Another is the use of secondary loads, such as electric water heaters (EWHs), ice-making plants and water pumps. Due to their large (thermal) time constant, they can be controlled to compensate
for the variations in the availability of RES with minimum impact to the consumers.
The objective of this project is to develop a system as an add-on to conventional
residential EWHs. It will consist of a power converter, DSP or micro-controller, sensors, communication devices . It will allow minor dynamic modification in the "set point" of the EWH defined by the EWH owner. This change can be done based on the measurement of the grid voltage or frequency at the point of connection or by a dedicated communication channel, say by means of Zigbee technology, directly by the distribution system operator. This can be integrated in a smart home. |