Cooperative control method for Distributed Energy Resources using air conditioning heat source systems in multiple buildings

¹ Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
² Campus Planning & Environment Management Office, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
³ Kajima Corporation, 6-5-30 Akasaka, Minato-ku, Tokyo 107-8502, Japan
⁴ Kajima Corporation, 6-5-30 Akasaka, Minato-ku, Tokyo-to 107-8502, Japan

This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it.
This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

Abstract. In recent years, the expansion of renewable energy adoption has accelerated the introduction of demand response (DR) to balance electricity supply and demand, necessitating the securing of power resources from all distributed energy resources (DERs). Among these, the use of DR from centralized air-conditioning heat source systems, whose adoption has been delayed owing to their operational complexity, is a critical consideration. In this study, energy management methods for power demand and supply were examined to achieve target goals through the "cooperative control" of multiple buildings. The central air-conditioning heat source system is assumed to be a DER resource. A DER-coordinated-control is proposed for three buildings: Buildings A and C have a combined gas and electric heat source system, and Building B has a water thermal energy storage system. During DR operation, a target power consumption was set for each building. Based on system simulation, the influence of applying this control on the negawatt-power status of each building and the achievement of the required negawatts for the entire building group was verified. During DR operation, negawatt target achievement was assessed every 30 min. Based on the operation plan established the previous day, when the system was activated at the start of DR operation, periods occurred in which the negawatt target could not be achieved. To address this issue, the target power consumption was reset based on the range of predicted power consumption. This control determines the target power consumption and the number of heat sources to operate during demand response by simulating outdoor conditions and air-conditioning heat load 30 min prior to DR commencement. Using this proposed control, it was confirmed that the DR negawatt targets requested for multiple buildings were achieved and that negawatt power could be supplied stably.