thanks dear the difference in the analogue and digital are in response time and the type of voltage signal would be sent from them, when i use a PLC like Deepsea or Easygen they can handle both signals coming from different AVR. the questions are still not answer: would both AVR the analogue and the digital have the ability to share the VAR load inspite of the difference in response in case of transient?, how much the power factor correction units would effect the performance?, should the gensets with the existing of the inductive load connected to the paralleled generators should be de-rated? should i change the analogue AVR to match that Digital AVR for better sharing the load?