Capacity Map FAQs
What is the meaning of the “Available Capacity” filter?
The Available Capacity has 4 filter levels. “High”, “Medium”, “Low” and “Contact for info”. These filters refer to the available capacity remaining for the selected “Capacity Mode” filter.
What is the meaning of the “Capacity Mode” filter?
The “Capacity Mode” filter allows the user to colour code the map based on the information they require. This includes Demand Capacity (for demand connections), generation capacity (for generation connections) and fault level capacity.
What is the meaning of the “Substation Type” filter?
Substations can be filtered on or off by their “Substation Type”. A “Bulk” substation type is a 110kV/33kV substation and the “Primary” substation type refers to 33kV/11kV substations and also 33kV/6.6kV substations.
How are the pin colours calculated for a primary substation?
The pins are coloured based on the worst case capacity for the selected primary substation, the 33kV distribution network connecting that substation to the bulk supply point and the capacity at the bulk supply point itself.
How are the pin colours calculated for a bulk supply point?
The pins are based on the worst case capacity for the selected bulk supply point.
What are the thresholds for each pin colour when viewing “Demand” or “Generation” capacity?
When viewing demand or generation capacity the pin colour coding is based on the worst applicable colour code as defined below:
Primary Substation Demand
0 MVA – Red (I.E. No available capacity).
>0 MVA to <=1 MVA – Amber (I.E. Capacity greater than 0MVA and less than or equal to 1MVA).
>1 MVA – Green ( I.E. Capacity greater than 1 MVA).
Data unavailable – Blue
Bulk Supply Point and 33kV distribution network demand:
0 MVA – Red (I.E. No available capacity).
>0 MVA to <= 5 MVA – Amber (I.E. Capacity greater than 0MVA and less than or equal to 5 MVA).
>5 MVA – Green ( I.E. Capacity greater than 5 MVA).
Data unavailable – Blue
What are the thresholds for each pin colour when viewing “Fault Level” capacity?
When viewing fault level capacity the pin colour coding is based on the worst applicable colour code as defined below (applicable to primary substations, 33kV distribution network and Bulk Supply Points):
0 MVA – Red (I.E. No available capacity).
>0 MVA to <= 50MVA – Amber (I.E. Capacity greater than 0MVA and less than or equal to 50MVA).
> 50 MVA – Green ( I.E. Capacity greater than 1 MVA).
Data unavailable – Blue
What do the letters on the map pins mean?
P = Primary substation (I.E. 33kV / 11kV OR 33kV / 6.6kV substation).
B = Bulk Supply Point (I.E. 110kV / 33kV substation).
PP = Dual Primary Substation (I.E. Both 33kV / 11kV AND 33kV / 6.6kV substations at one site).
BP = Combined Bulk Supply Point and Primary substation (I.e. 110kV / 33kV AND either 33kV / 11kV OR 33kV / 6.6kV substations at one site).
For PP and BP substation types the map pins may be split into two different colours. E.G. A “BP” pin may be green on the “B” half and yellow on the “P” half. This represents high available capacity at the Bulk Supply Point and medium available capacity at the primary.