Overload and overvoltage in low-voltage and medium-voltage networks due to renewable energy — Some illustrative case studies

This paper presents the use of curtailment to allow more wind or solar power to be connected to a distribution network when overcurrent or overvoltage set a limit. For four case studies, all based on measurements, the gain in produced energy is calculated. It is shown that the curtailment method has a large impact on this gain. The paper further discusses details of the curtailment algorithm and the communication needs as well as some further applications of curtailment.