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Version: 2.16.0

Regulator Repairing

Some regulators in the CPPAL source data are not electrically correct, others split phases in ways the EWB does not handle, so we need to "repair" them for use in EWB. These repairs will not try to change the connectivity, but will remove connectivity that causes EWB problems, and potentially change phases.

In any error reports about step failures, the steps represent the minimum distance from any of the regulator sites regulators, counting all conductors, junctions and switchgear. The names of the types below are not intended to reference any external system, and are labelled by their layout characteristics.

Invalid Regulator Site Types​

There are other regulator configurations than those mentioned below, many of which are valid and have been excluded from this documentation.

TypeDescriptionSub-variant
1aBoxed three connection single regulator sites with bypassThe five digit sub-variant represents the incoming connection location, then the number of switches on supply side, load side, spur and bypass
2aParallel dual regulator sitesThere are no known sub-variants of this type
2bBoxed dual regulator sites with bypassThe four digit sub-variant represents the number of switches on the supply, load, spur and bypass
2cParallel boxed dual regulator sitesThere are no known sub-variants of this type
3aParallel triple regulator sitesThe two digit sub-variant represents the regulator block connection location, and the number of switches inline with each regulator
note

For each of the above, the supply and load side switch counts may be swapped, as the direction of feed is not required for the regulator processing

Single Regulator Sites​

We support the following standard single regulator site layouts:

TypeOriginalRepaired
1a 11111original type 1a 11111repaired type 1a 11111
1a 21112original type 1a 21112repaired type 1a 21112
1a 21112 swappedoriginal type 1a 21112 swappedrepaired type 1a 21112 swapped
1a 21212original type 1a 21212repaired type 1a 21212

We also detect some errors in the connectivity in these sites with the following edge case processing:

TypeOriginalRepaired
1a 11111 nodeoriginal type 1a 11111 noderepaired type 1a 11111 node
1a 21112 nodesoriginal type 1a 21112 nodesrepaired type 1a 21112 nodes
1a 21212 extraoriginal type 1a 21212 extrarepaired type 1a 21212 extra
1a 21212 junctionoriginal type 1a 21212 junctionrepaired type 1a 21212 junction
1a 21212 nodeoriginal type 1a 21212 noderepaired type 1a 21212 node

Dual Regulator Sites​

We support the following standard dual regulator site layouts:

TypeOriginalRepaired
2aoriginal type 2aunchanged
2b 1111original type 2b 1111repaired type 2b 1111
2b 1112original type 2b 1112repaired type 2b 1112
2b 1211original type 2b 1211repaired type 2b 1211
2coriginal type 2crepaired type 2c

We also detect some errors in the connectivity in these sites with the following edge case processing:

TypeOriginalRepaired
2a nodesoriginal type 2a nodesunchanged
2a spuroriginal type 2a spurrepaired type 2a spur
2b 1110original type 2b 1110repaired type 2b 1110
2b 1112 nodeoriginal type 2b 1112 noderepaired type 2b 1112 node
2b 1112 nodesoriginal type 2b 1112 nodesrepaired type 2b 1112 nodes
2b 1211 nodeoriginal type 2b 1211 noderepaired type 2b 1211 node

Triple Regulator Sites​

All regulators in a triple regulator site will have their phases updated to ABC. This prevents EWB from dropping phases, as EWB is not able to detect the way the split-phase regulator is connected as a 3-phase split. If at some stage it is deemed that these regulators must be modelled as individual phased transformers, these repair algorithms will need to be revisited to split the phases in a way that EWB detects.

TypeOriginal
3a 10type 3a 10 original
3a 20type 3a 20 original
3a 21type 3a 21 original

We also detect some errors in the connectivity in these sites with the following edge case processing:

TypeOriginal
3a 10 nodeoriginal type 3a 10 node