Abstract
Variable renewable energy sources (VRE) need to be increased rapidly under the 2050 carbon-neutral policy. New distributed energy resources (DER) management system needs to be developed which can compensate the large VRE output fluctuations in wide areas. Considering internet of thing (IoT) ready DERs, multiple applications (apps.) with no relation of each other will send signals to one DER and coordination scheme will be needed. This paper reports necessary functions of such multi apps. – one DER system and test the functions with an actual electric vehicle charger. Four functions are identified: 1. to set the priority of apps. and to judge whether the operation command is accepted; 2. to make apps. know the situation of the system; 3. to make apps. change their operation by themselves; 4. to specify the app that have caused the operation change of DER. Function 4 is unique and useful for DER aggregators to score the DER activities. Through the experiment and discussions, we recognize these functions will be able to increase aggregators’ business quality.
