T.-H. Chen, W.-C. Yang, Y.-D. Cai, and N.-C. Yang (Taiwan)
Voltage variation, closed-loop, and distributed generation.
Normally, closed-loop distribution feeders apply very
well to critical customers due to their higher reliability.
However, their voltages vary largely, with some even
exceeding voltage limits, while distributed generation
sources interconnect with them. This work analyzed the
voltage variation of a normally closed-loop distribution
feeder interconnected with a distributed generation source.
First, the model of a sample system involving a normally
closed-loop distribution feeder and a distributed
generation source was constructed. Second, the maximum
allowable capacity of the distributed generation source
was evaluated. Finally, the sample system was simulated,
and the voltage variations were analyzed based on the
simulation results. The interconnection location and
operating power factor of a distributed generation source,
plus the loading, power factor, and operating condition of
a distribution feeder, are the major factors that affect
distribution feeder voltage variation. They were all taken
into account in this work.