The Novel Fault Analysis Method of the Power Grid with Inverter Interfaced Distribution Generators
DOI:
https://doi.org/10.13052/dgaej2156-3306.3123Keywords:
Keyword: inverter-interfaced distribution generator (IIDG), fault current characteristics, fault analysis method, relay protection calculationAbstract
The special fault current characteristics of inverter interfaced dis -
tribution generator (IIDG) make the conventional fault analysis method
based on synchronous generator not applicable to a power grid with
such IIDGs. In order to address this issue, according to the special
fault current characteristics of IIDG, the problems of conventional fault
analysis method when it is applied for the power grid with IIDGs are
pointed out firstly. Based on it, a novel fault analysis method of the
power grid with IIDGs is proposed. Lots of simulation cases show
that the proposed fault analysis method has high calculation accuracy,
which can meet the requirements of short-circuit calculation of the
power grid and setting calculation of relay protection.
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