As there are more and more Wind Turbine and Photo Voltaic manufacturers for energy producing farms worldwide, there is a growing need for continuous power quality monitoring at the Point of Common Coupling (PCC). Monitoring PQ has technical, economical and legal implications.
Electrical parameters fluctuates continuously and depend on many factors such as wind and sun. Installing Continuous, high resolution recording and monitoring devices in PCC location enables the utility and/or the farm operators to ensure compliance with the grid requirements.
Experience shows us that many power quality events that are within the permitted range, can still be a source of problem to the energy producers and consumers which many times are a source for power quality investigation and thorough post event analysis.
The ideal way for analyzing the above abnormalities is the use of a Class-A power quality analyzer capable of continuously recording & retaining all network parameters for a long period of time at a high resolution, including waveform. This kind of PQA should enable the investigation and presentation of all electrical parameters based on the applicable industry standards. This PQA should serve as a “Black-Box” used in airplanes. It will record all data as mentioned above without the need of setting up triggers or thresholds.
In the following slides one can see few examples of data recorded by a continuous high resolution PQA at a PCC location in Photovoltaic Farms. These measurements show anomalies that are still within the standards but thank to the specific Elspec PQA capabilities, these occurrences can be observed and analyzed