A Multi-Stage Restoration Method for Medium-Voltage Distribution System With DGs

A fast and effective service restoration method is proposed for medium-voltage distribution system with distributed generators by combining intentional islanding of distributed generators with network reconfiguration to maximize restoration of out-of-service loads. The whole process is divided into...

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Bibliographic Details
Published in:IEEE transactions on smart grid 2017-11, Vol.8 (6), p.2627-2636
Main Authors: Wang, Feng, Chen, Chun, Li, Canbing, Cao, Yijia, Li, Yong, Zhou, Bin, Dong, Xuzhu
Format: Article
Language:English
Subjects:
Circuit faults
Data buses
Distributed generation
distributed generators (DGs)
Distribution system
Electric potential
Electric power distribution
Electric power systems
Generators
Indexes
intentional islanding
Islanding
Load shedding
Medium voltage
Optimization
Reconfiguration
Service areas
Service restoration
Shedding
Switches
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Summary:A fast and effective service restoration method is proposed for medium-voltage distribution system with distributed generators by combining intentional islanding of distributed generators with network reconfiguration to maximize restoration of out-of-service loads. The whole process is divided into four stages: 1) matching islanding schemes; 2) restoration of network connectivity and distributed generators; 3) network reconfiguration; and 4) optimization of load shedding. Whether the last three stages are executed or not depends on violations of operational constraints. In accordance with the topological feature of distribution system, a new concept of fundamental loop matrix is presented and applied in detecting out-of-service areas, restoration of network connectivity, and network reconfiguration. Simulation studies on the PG&E 69-bus system shows the effectiveness of the proposed approach.
ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2016.2532348