An Event-trigger Optimization Framework for Congestion Management

This paper proposed an event-triggered framework to solve network congestions caused by microgrids (MGs) in regional distributed networks. Two processes are included in this framework: congestion validation process and power rescheduling process. In order to relieve the computation burden, rescheduling process is triggered only when congestions are detected in congestion validation process. DC optimal power flow based optimization model is used to describe congestion validation process. And then power rescheduling process can be formulated distributed optimization problem for multiple microgrids, which can be solved by the alternating direction method of multipliers (ADMM) algorithm. Finally, simulations are implemented to illustrate the reasonability and effectiveness of the proposed framework. Results show that the proposed framework could effectively solve the congestions with transaction diversity guaranteed.