Power distribution network fault detection method and system considering access of multiple grid-connected inverters
The invention discloses a power distribution network fault detection method and system considering access of multiple grid-connected inverters, and the method comprises the steps: obtaining a position sorting result of a virtual impedance array where the maximum virtual impedance in a (k-1) th perio...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a power distribution network fault detection method and system considering access of multiple grid-connected inverters, and the method comprises the steps: obtaining a position sorting result of a virtual impedance array where the maximum virtual impedance in a (k-1) th period is located, calculating the position variable quantity of the maximum virtual impedance according to the position sorting result of the maximum virtual impedance in the kth period and the position sorting result of the maximum virtual impedance in the (k-1) th period; judging whether the position variable quantity of the maximum virtual impedance is greater than a preset threshold value or not; if yes, whether the position sorting result of the virtual impedance array where the maximum virtual impedance in the (k + 1) th period is located is larger than the position sorting result of the virtual impedance array where the maximum virtual impedance in the (k-1) th period is located or not continues to be judged; an |
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