MICROGRID TROUBLESHOOTING METHOD
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United States of America Patent
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Issued Date -
Jun 23, 2016
app pub date -
Dec 17, 2014
filing date -
Dec 17, 2014
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Abstract
A microgrid troubleshooting method entails, connecting a first trouble simulating unit between a utility electricity and an AC load, wherein an AC end of a second trouble simulating unit connects with the AC load, and a DC end of the second trouble simulating unit connects with a solar power generating unit, an energy-storing unit, a fuel cell unit, and a DC load; switching the second trouble simulating unit to a short-circuit state, measuring a microgrid earth potential rise, short-circuit current of the solar power generating unit, and short-circuit current of the energy-storing unit, and checking whether the microgrid is damaged; and switching the first trouble simulating unit to a short-circuit state, measuring a microgrid earth potential rise, and checking whether the microgrid is damaged. The method is effective in simulating troubles with the microgrid, measuring the microgrid's short-circuit current, and testing whether the microgrid's protection mechanism is functioning well.
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