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PSSE bus codes

asked 2012-10-16 19:37:46 -0500

JervisW gravatar image

A reference of all the bus types in PSSE.

Type 1: Load Bus
Type 2: Generator Bus
Type 3: Swing Bus
Type 4: Disconnected
Type 5: Load Bus (at boundary of an area)

Have you ever used Type 5? I only came across it today in my research.

Here is how to create a new type 1 bus

busnumber, busname = 20020, "PARK_2"
psspy.bus_data_2(i=busnumber, intgar1=1, name=busname)

Beware though, if bus number 20020 already existed then this would change it's type and name - It wouldn't create a new bus at all.

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answered 2014-07-21 17:02:40 -0500

Alastair P gravatar image

I had this (type 5) error crop up using


to extract sbs 0, where there were branches to deleted buses connected to in service buses they became type 5. An interim fix (as you can't actually do any operations with a type 5 bus in the case) is to use


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answered 2013-04-29 05:38:07 -0500

Avi89 gravatar image


I am getting an error called: "3 in-service branches connected to type 5 bus 3WNDTR [] * BUS"

Can you tell me what this is and how to go about solving this error..

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Asked: 2012-10-16 19:37:46 -0500

Seen: 6,205 times

Last updated: Jul 21 '14