fault identification algorithm based on zone-division wide area protection system
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ID: 166238
2014
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Abstract
As the power grid becomes more magnified and complicated, wide-area protection system in the practical engineering
application is more and more restricted by the communication level. Based on the concept of limitedness of wide-area
protection system, the grid with complex structure is divided orderly in this paper, and fault identification and protection
action are executed in each divided zone to reduce the pressure of the communication system. In protection zone, a new
wide-area protection algorithm based on positive sequence fault components directional comparison principle is proposed.
The special associated intelligent electronic devices (IEDs) zones which contain buses and transmission lines are created
according to the installation location of the IEDs. When a fault occurs, with the help of the fault information collecting
and sharing from associated zones with the fault discrimination principle defined in this paper, the IEDs can identify the
fault location and remove the fault according to the predetermined action strategy. The algorithm will not be impacted by
the load changes and transition resistance and also has good adaptability in open phase running power system. It can be
used as a main protection, and it also can be taken into account for the back-up protection function. The results of cases
study show that, the division method of the wide-area protection system and the proposed algorithm are effective.
| Reference Key |
liu2014journalfault
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|---|---|
| Authors | ;Xiaojun Liu;Youcheng Wang;Hub Hu |
| Journal | communications in statistics: simulation and computation |
| Year | 2014 |
| DOI |
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