Demand response from multiple-energy customers in integrated energy system

摘要

The integrated energy system (IES) has gained rapid development in recent years for achieving higher energy efficiency. While the coupling between different kinds of energy carriers limits the operational flexibility of the integrated energy system, which contradicts with the increasing penetration of variable wind power. Fortunately, the integration of multiply-energy carries on the other hand provides customers with multiply options for fulfilling their energy demand. With the development of demand response (DR) technologies and energy net-work systems being increasingly flexible, it has become a realistic possibility for encouraging customers to adjust their energy demands in response to system operation conditions. Based upon the concept of energy hub which is a unit that provides the conversion and storage of different energy carriers, the flexibility of customers' energy demand is analyzed. Moreover, a two-step sequential dispatch framework is proposed for the incorporation of customers' demand response. In the proposed technique, the energy production constraints are relaxed via the demand response, which allows a better utilization of wind power and a reduction of the energy costs. An integrated energy system is developed to illustrate the effectiveness and benefits of the proposed technique.