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Question about transformer and on-load tap changers (OLTCs)

Discussion in 'Power Electronics' started by meyra meyira, Sep 1, 2018.

  1. meyra meyira

    meyra meyira

    Feb 7, 2018

    I have a network with hundreds of busbars (ranging from 33kV to 6.6kV). I have some electrical loads connected at the far end of the network via 2-winding transformers and I am analysing the voltage drops at the point of load connections.

    Some of these busbars experience around 10% voltage drops (0.90 pu) therefore I want to add tap changers on my transformers (I am using IPSA simulation tool). There are some settings I need to change as follows:

    Basic tap data:
    Setting (%) = Current tap position
    Minimum (%) = Minimum tap position
    Maximum (%) = Maximum tap position
    Step (%) = Tap change increment

    Which of these should I vary to improve voltage profiles? Also what are the ideal values I should set for the above data?

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