Generally, the grid connected distributed generating systems have mandatory protection features like over voltage, over current. For operating this protection feature (over voltage), voltage sensors is required to monitor the voltage. Is the voltage sensor is mandatory to monitor the voltage?
or is it allowed to estimate the voltage instead of sensing, by using system parameters?
Hi Sir, My question is, we want to estimate the voltage, instead of sensing (eliminating the voltage sensor), is it allowed in protection systems or not.
Mohamed Azab
Solar based DGs are designed for rated voltage and current so that voltage sensors
are not mandatory.
Thanks for your answer Alwin Vinifred Christopher
If possible, can I get references for the above statement
I am curious to know without voltage sensor, how can you operate your DG synchronised to the grid?
Ashok Parsotam , Please go through the below links. You can get the details about sensor-less DG synchronization.
Article One-Cycle-Controlled Single-Stage Single-Phase Voltage-Senso...
Article Grid Voltage Estimation and Current Control of a Single-Phas...
Article Observer-Based Grid-Voltage Sensorless Synchronization and C...
https://ieeexplore.ieee.org/document/8733038
Thank you for your prompt reply. All these is new to me. I will read these papers with keen interest.
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