Appendix Q
:
Tap Control Setup
Siemens Industry, Inc.
94
Q: Tap Control Setup
Overview
The new algorithm is intended to be both robust and universal. It should also be simple to use for the
majority of applications.
The current selections for Tap Changer Type invoke a similar algorithm as previously implemented, with
increased reliability and more flexibility.
The addition of “Custom” for the Tap Changer Type will allow for any of the configurable values to be
modified.
To keep the new algorithm largely transparent, the configuration items are listed under the Diagnostics
menu.
Improving Robustness
The new algorithm is more robust in that it will allow more flexibility in signal timing and it will pool all the
known data to make the best determination of tap action.
Tap change control
The tap change control has been modified to control a generic tap changer. The generic tap change is
depicted in Figure 1 - Tap Change Controller. Configurable parameters (in the diagnostics menu) are R/L
On Time, R/L Off Time, Tap Change Timeout, Pre Tap Time, and Post Tap Time.
