Title :
A line weighted frequency droop controller for decentralized enforcement of transmission line power flow constraints in inverter-based networks
Author :
Ainsworth, Nathan ; Grijalva, Santiago
Author_Institution :
Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Recent works have shown that networks of voltage-source inverters implementing frequency droop control may be analyzed as consensus-like networks. Based on this understanding, we show that enforcement of network line power flows can be viewed as an edge-preservation problem in a Δ-disk dynamic interaction graph. Inspired by other works solving similar problems in other domains, we propose a line weighted frequency droop controller such that a network of all active buses implementing this controller enforces the specified line power flow constraints without need for communication. We provide simulation results verifying that our proposed controller limits line power to enforce constraints, and otherwise acts as a traditional droop controller.
Keywords :
decentralised control; frequency control; graph theory; invertors; load flow control; power cables; power grids; power transmission control; power transmission lines; Δ-disk dynamic interaction graph; consensus networks; controller limits; decentralized enforcement; edge-preservation problem; inverter-based networks; line weighted frequency droop controller; network line power flows; power flow constraints; transmission line power flow constraints; voltage-source inverters; Frequency control; Inverters; Multi-agent systems; Power measurement; Power system stability; Stability analysis; Voltage control; Distributed control; Graph Theory; Multiagent system; Power system dynamics; Power system transients;
Conference_Titel :
Power and Energy Society General Meeting (PES), 2013 IEEE
Conference_Location :
Vancouver, BC
DOI :
10.1109/PESMG.2013.6672571