Architecture and Fault Identification of Wide-area Protection System
Abstract: Wide-area protection
system (WAPS) is widely studied for the purpose of improving the performance of
conventional backup protection. In this paper, the system architecture of WAPS
is proposed and its key technologies are discussed in view of engineering projects.
So a mixed structure-centralized-distributed structure which is more suitable
for WAPS in limited power grid region, is obtained based on the advantages of
the centralized structure and distributed structure. Furthermore, regional
distance protection algorithm was taken as an example to illustrate the
functions of the constituent units. Faulted components can be detected based on
multi-source imformation fuse in the algorithm. And the algorithm cannot only
improved the selectivity, the rapidity, and the reliability of relaying
protection but also has high fault tolerant capability. A simulation of 220 kV
grid systems in Easter Hubei province showed the effectiveness of the wide-area
protection system presented by this paper.
Keywords: Wide-area protection,
fault identification, centralized-distributed structure, regional distance protection
Author: Zhenxing Li, Xianggen
Yin, Zhe Zhang, Yuxue Wang
Journal Code: jptkomputergg120068
