With the availability of UHV engineering technology, the scale of the power
network is expanding, and the level of the short-circuit current is getting higher, which
brings hidden trouble to the safe and stable operation of the power network. Further this
article issued a method that optimized the configuration of a current limiter based on the
reliability of the power network. According to the reliability analysis under the influence of
a short circuit, the quantitative evaluation of reliability of the power network is realized by the
calculation of the short-circuit current. A quantitative model is established among reliability
evaluation and the short-circuit current as well as load loss, the candidate installation site
of a current limiter can be determined according to reliability quantification results. This
method uses the particle swarm optimization algorithm to optimize the distribution of the
limiter, aiming at the reliability level and the minimum number of current limiters in the short
circuit of a power grid. Finally, taking the actual power grid of a province as an example, the
result shows that this method can reduce the search space of the optimal solution, optimize
the configuration of the current limiter, and effectively limit the short-circuit current and
improve the reliability of the power network.
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