Power flow methods
Power flow methods
(OP)
I want to get detailed information on there different types of power flow methods. Are there any sources of this information on the web??
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RE: Power flow methods
http://tomsovic.eecs.wsu.edu/Vitae/Publications/ZHU02a.pdf
for:
Adaptive Power Flow Method, based on:
Compensation Based Method
RE: Power flow methods
Stoll, Harry - Least Cost Electric Utility Planning
http://www.dromeydesign.com/dess/lfa.htm
http://www.pserc.wisc.edu/ecow/get/publicatio/1999public/OPF.RHL.PSerc.9903.pdf
http://www.icfconsulting.com/Markets/Energy/doc_files/OPF_snapshot.pdf
http://www.sor.princeton.edu/~rvdb/ampl/nlmodels/power/
RE: Power flow methods
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RE: Power flow methods
RE: Power flow methods
A good reference on GAs is by David Goldberg.
RE: Power flow methods
http://lancet.mit.edu/~mbwall/presentations/IntroToGAs/P001.html
http://www.doc.ic.ac.uk/~nd/surprise_96/journal/vol4/tcw2/report.html
http://www.cai.sk/Volumes/Volume_17_1998_No2-3.htm
Recently GA's have started showing up in commercial software-
http://www.etap.com/ocp.htm
Kit Po Wong at HK Polytechnic is a leader in the application of genetic programming to power systems problems.
http://www.ee.polyu.edu.hk/staff/eekpwong/kpwong.html
To get back to the original question, there are numerous possible objectives for load flow calculations. Generally the goal is to computationally model the steady state condition of a power system. Normally you specify real and reactive power flow in and out of each bus and designate one “swing” bus to provide one degree of freedom for the system. The load flow computation then calculates the voltage at each bus and complex power flows and losses.
Programs can adjust various system parameters to optimize certain results. For example you can attempt to mimize system losses, minimize cost of generation while maintaining required reserves, optimize system voltages, reactive power flow or stability margins, etc. These are very computationally intensive calculations for large systems so there is a lot of research on methods to improve speed and accuracy. Many of these give rise to non-linear conditions. GA's are good at handling non-linear systems.
That's about all I can remember.
RE: Power flow methods
There is a need to derive system equations describing the power system. The system equations are nonlinear. Two trial and error iterative methods, Gauss-Seidel and Newton-Raphson, are used to provide approximate solutions. A simplified linearized power flow called DC power flow can also be used.
RE: Power flow methods
Some more fodder for the grey matter to process
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Colin J Flatters
Consulting Engineer & Project Manager
RE: Power flow methods
RE: Power flow methods
http://www.solver.com/gabasics.htm
for example:
Drawbacks of Evolutionary Algorithms