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Smart network control with coordinated PV infeed

Smart network control with coordinated PV infeed

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The increasing amount of photovoltaic (PV) systems leads to a voltage rise in the distribution grid. By providing reactive power, PV and battery inverters can reduce the voltage. For this purpose, most inverters have implemented a voltage-dependent reactive power curve, which is often parameterised once during the installation of the system. In most cases, the parameterisation does not take into account the position of the system in the grid. As a result, inverters closer to the distribution transformer provide less or no reactive power as the voltage at the beginning of a feeder is much smaller. This study presents a regulation tool, which parameterises the reactive power curve in dependence on the position in the grid. This leads to a coordinated behaviour of all inverters in a distribution grid and ensures that all inverters provide a similar amount of reactive power. Moreover, the regulation tool notices if the grid topology has changed and adapts the reactive power control to this change.

http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rpg.2018.5268
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