Coordinated Secondary Control for Autonomous Hybrid Three-port AC/DC/DS Microgrid
This paper presents a coordinated secondary control (CSC) strategy for distributed power management for an autonomous hybrid three-port AC/DC/DS microgrid. The proposed CSC is on top of a generalized primary control (GPC), which consists of local power sharing (LPS) control within an individual...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
China electric power research institute
2018-03-01
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| Series: | CSEE Journal of Power and Energy Systems |
| Online Access: | https://ieeexplore.ieee.org/document/8315197 |
| Summary: | This paper presents a coordinated secondary control
(CSC) strategy for distributed power management for an autonomous
hybrid three-port AC/DC/DS microgrid. The proposed
CSC is on top of a generalized primary control (GPC), which
consists of local power sharing (LPS) control within an individual
AC or DC subgrid, global power sharing (GPS) control throughout
the AC/DC subgrids, and storage power sharing (SPS)
control in a distributed storage (DS) network. The CSC along
with the GPC uses the local frequency/voltage deviations and
offers decentralized power management with enhanced overall
reliability. To eliminate the inherent frequency/voltage deviations
in GPC and restore to their nominal values, a secondary control
is normally applied to all distributed generators (DGs), which
would degrade the performance of decentralized power management.
To overcome this concern, a CSC strategy is proposed
to concurrently restore frequency/voltage and re-establish a
distributed power management by means of limited information
exchange through the low-bandwidth communication links. The
proposed control scheme has been verified by both simulations
and controller hardware-in-the-loop (CHIL) experiments in an
OPAL-RT digital simulator system. |
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| ISSN: | 2096-0042 2096-0042 |