Decentralized and Distributed Transient Control for Microgrids

This paper presents a comprehensive approach toward the design of primary and secondary controllers in low-inertia power grids with mixed lines and a large amount of inverter-interfaced generation. First, a complete dynamic phasor model is developed that represents the electromagnetic and electromechanic dynamics of lines, inverters, synchronous machines, and constant power loads. The model offers a straight-forward way to combine white-, gray-and black-box models, and its structure lends itself well to control design. In a second step, it is shown how a recently developed robust fixed-structure control design method can be applied to the challenging and relevant problem of primary and secondary control in medium-and low-voltage grids. A comprehensive three-part simulation example demonstrates how frequency and voltage transient stability and performance can be achieved through a methodical design process. It is also shown how nonstandard performance specifications such as proportional power sharing can be directly incorporated in the design. Finally, a distributed secondary controller from the literature is reformulated and designed using the presented framework, and all results are validated in nonlinear simulation.


Published in:
Ieee Transactions On Control Systems Technology, 27, 1, 311-322
Year:
Jan 01 2019
Publisher:
Piscataway, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN:
1063-6536
1558-0865
Keywords:
Laboratories:




 Record created 2019-01-23, last modified 2019-06-19


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)