Coordinated scheduling model of power system with active distribution networks based on multi-agent system

Abstract

With the large-scale development of distributed generations (DGs) and the connection into the main grid of active distribution networks (ADNs), traditional centralized dispatch of power system has encountered enormous challenge. In a bilateral electricity market, introducing ADN resources in the day-ahead generation schedule will not only enrich the dispatch patterns to the power system, but also reflect the initiative of ADNs. This paper proposes a coordinated scheduling model of power system with a plurality of ADNs based on multi-agent system where ADN agents are brought in the day-ahead market clearing. The process of market clearing and the dispatch of DGs in ADNs are independent with each other but linked together through the market clearing price (MCP) and bid volume. The optimal operating point of the whole system is achieved through multiple information exchange. In comparison with the dispatch without interaction between ADNs and the market operator (MO), the coordinated scheduling model is applied in a system with four ADNs to verify that the proposed method can improve the overall interests of ADNs. Finally, the effects of storage device and tie-line power limit are analyzed.

Interdependence between transportation system and power distribution system: a comprehensive review on models and applications

“…Due to the constantly increasing penetration of renewable energy and distributed generation [102,103], the distribution system itself is undergoing rapid change. Power flow could be reversed depending on renewable power output; a fraction of demand such as EV charging becomes deferrable and more flexible; energy storage devices are deployed to facilitate system operation; above changes pave the way to the so-called active distribution network [104,105], and call for innovative ideas, technologies and initiatives to support such a transition. To our knowledge, energy storage sharing and its business model have already attracted much attention [105][106][107][108].…”

Agent-Based Coordinated Operation Strategy for Active Distribution Network With Distributed Energy Resources

“…An extra top-level agent was presented to maximize the profit of the overall system based on the commonly used tri-level framework. For realising the market mechanism of ADN, the market operator agent was introduced to determine the market clear price and bidding process [25]. Since ADN agent took in charge of power management, the market clearing problem and coordinated dispatching problem were combined with the proposed coordinated scheduling model.…”