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Load flow
2

Load flow

Load flow

(OP)
Can anyone recommend a good text book with solutions or articles that covers load flow calculations on an electric power grid?   Thanks

RE: Load flow

"Elements of Power System Analysis" by Stevenson (now being edited by Grainger) is not bad.

"Solution of Large Networks by Matrix Methods" by Brown has detailed solutions, but is out of print.  You may find it in an engineering library.

The are plenty of other text books out there also.

If there is any particular solution method your are interested in, I may have a reference paper you can copy.

RE: Load flow

(OP)
Jnims
   I am looking for load flow and fault current calculations for Non-utility generators added to utility distribution, subtransmission and transmission lines.  I have a copy of Stevenson's book with solutions.  I need a text that concentrates on the NUG and CoGen area.  Let me know if you can help.

THANKS   

RE: Load flow

Traditionally, any connection to the grid has to have parameter design input from the owner (used to be the Utility) in order for you to be able to either input it to the electrical power system analysis software (SKM, Inc. sofware "DAPPER, CAPTOR, A-FAULT, etc., OTI, Inc. software called ETAP, etc.) or some approximate "pencil and paper" calculation. Parameters needed from the grid owner at the point of connection are System Short Circuit Impedance (positive, negative and zero sequence impedances), Voltage tolerance, Positive Sequence, upstream power distribution system configuration, minimum power flow, maximum power flow, minimum short circuit current contribution, maximum short circuit current contribution, etc. The best way to go about it is to contact the Utility or grid owner at the location where you intend to connect your power supply to the grid. IEEE Standard 399-1997 "IEEE Practice for Industrial and Commercial Power Systems Analysis" may help. There are also web sites that may include information you are looking for too. The States in USA are in a process of forming various standards/requirements for the independent electrical power/energy generation providers.

RE: Load flow

RE: Load flow

One of the standard university texts (UK)

"Electric Power Systems - B M Weedy"

or IEEE Red Bock may cover the same

_______________________________________
Colin J Flatters BSc(Hons) IEng MIEE MIIE
Electrical Engineer / Project Manager
Email - cflatters@colin7.demon.co.uk.

RE: Load flow

A search of the IEE shop (UK) at www.iee.org should throw out some newish text books (e.g 'Embedded Generation' from  staff at a UK university) that cover the main areas to be aware of.  As jbartos suggested you need to be guided by the utilities in question as most have their own set of rules for connecting generation - and even where national standards exist most distribution networks (in particular) have their own specific issues and connecting can be easy in some places but not possible in others.

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