MATLAB : Find load flow in radial distribution network

can you please share the related paper such that we can provide a solution............

for radial distribution 33 bus boss using forward/backward sweep

ok.
please follow the paper where he discussed in steps to implement the code....

#-Link-Snipped-#

load flow now ok have to start with branch and bound technique

hello boss. doing my project on the topic reconfiguration of distribution network for loss minimization and facing the same problem of radial load flow. i have gone through a few of radial load flow papers based on forward backward sweep. coding part is problematic. i really need help! please help

hi Shruti21 using which technique going to reconfigure.... and btw i got load flow for radial system

using GA. u got the load flow code ?

u are using only one objective or multiobjective????..... ya got the code

hi guys please share the following code where u getting issue ok such that ill go through once and ill try to solve ok...........

hi sir..share ur email id ,so that i can mail u the code

@#-Link-Snipped-# Why not share your Matlab code here itself ?
Many CEans will indirectly get help from your code too.

shruti21hi sir..share ur email id ,so that i can mail u the code

hello sir i have a same problem, my project is reconfiguration network fo real loss reduction to increase the reliability network, may anyone may help me with the matlab code, it's starting to depressed me...

Hi friends....
I've solved different papers for load flow in radial distribution system and one paper for mesh network.
So I can help you for load flow..
But i need some help in reconfiguration. How can i approach for reconfiguration????
Waiting for your replies.

shruti21hi sir..share ur email id ,so that i can mail u the code

Hi...
U can ask me for load flow.... i got the results...
I'm also working for reconfiguration..

use any of the evolutionary algorithm for reconfiguration

maraitamilanuse any of the evolutionary algorithm for reconfiguration

evolutionary algorithm means????
Can u tell me some clearly....

genetic,differential, harmony search etc

I'm trying to solve "A NEW ALGORITHM FOR THE RECONFIGURATION OF DISTRIBUTION FOR LOSS MINIMIZATION"
IEEE Transactions on Power Delivery. Vol. 7, No. 3, July 1992.
CAN U HELP ME FOR THIS????

maraitamilangenetic,differential, harmony search etc

I'm trying to solve "A NEW ALGORITHM FOR THE RECONFIGURATION OF DISTRIBUTION FOR LOSS MINIMIZATION"
IEEE Transactions on Power Delivery. Vol. 7, No. 3, July 1992.
CAN U HELP ME FOR THIS????

1992.... might be old strategy new ideas might arrived at this time

maraitamilan1992.... might be old strategy new ideas might arrived at this time

can u suggest me any paper which is easy to understand the concept of reconfiguration?????

sooraj narayanHai sooraj narayan...
I think u r making program for the paper titled as "a direct approach for distribution system load flow solution" by J H Teng. U can mail me your program to my mail #-Link-Snipped-#
I've solved that paper. but i don't want to give my program.
however i can help to identify the mistakes in ur program or i can provide u results for any system to do ur thesis work.
If u want results only, u can mail me the data for any bus system.

The email id which i've mentioned is not my personal id. I'll check that mail weakly once. so please be patience to get the reply from me.

maraitamilan1992.... might be old strategy new ideas might arrived at this time

Hai maraitamilan..
Thanks for your suggestion about reconfiguration. I've searched for latest papers and i got the program for reconfiguration. I would like to thank you for your replies to my questions. Thank u once again....

sooraj narayanANOTEHR CODE:
clear all
clc
i=sqrt(-1);
% eval('linedata15bus')
% eval('loadadata15bus')
eval('line33')
eval('load33')
nbus=max(max(line😀,3)),max(line😀,2)));
nbranch=length(line😀,1));
fb=line😀,2);
tb=line😀,3);
R=line😀,4);
X=line😀,5);
MVAb=100e6;
KVb=12.66e3;
Zb=(KVb^2)/MVAb;
Z=R+(i*X);
Zpu=Z/Zb;
PL=busd😀,2)/MVAb
QL=busd😀,3)/MVAb
delV=zeros(1,nbus);
iter=1;
ILL=[];
V=ones(nbus,1);
Vprev=V;
IL=[];
dVmax=1;
% while (dVmax>0.00001)
while(iter<200)
for k=1:nbus
IL(k,1)=conj((PL(k)+(i*QL(k)))/V(k));
end
ILL=IL;
for k=nbranch:-1:1
p=fb(k);
q=tb(k);
ILL(p)=ILL(p)+ILL(q);
end
Ibr=ILL(tb);


for k=1:nbranch
delV(k,1)=(Zpu(k)*Ibr(k));
end

for k=1😔nbus-1)
V(tb(k),1)=V(fb(k),1)-delV(k,1);
end
dV=V-Vprev;
dVmax=max((dV));
Vprev=V;
iter=iter+1;
end
iter
disp('BUS VOLTAGES ARE');
abs(Vprev)
disp('BRANCH CURRENTS ARE');
abs(Ibr)

Hai sooraj narayan...
I think u r making program for the paper titled as "a direct approach for distribution system load flow solution" by J H Teng. U can mail me your program to my mail.
I've solved that paper. but i don't want to give my program.
however i can help to identify the mistakes in ur program or i can provide u results for any system to do ur thesis work.
If u want results only, u can mail me the data for any bus system.

hi shruti21, I am trying to implement code for ladder network theory. It will be helpful to me if you will help me with the code of forward backward seep method.

Sir,

I would like to do my project on the topic ‘Power Loss Minimization in Distribution System Using Network Reconfiguration in the Presence of Distributed Generation’- (IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 28, NO. 1, FEBRUARY 2013) But I don’t know how to start.😔... May anyone please give me guidelines for starting my project..

y no replies?? 😔

VanipdSir,

I would like to do my project on the topic ‘Power Loss Minimization in Distribution System Using Network Reconfiguration in the Presence of Distributed Generation’- (IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 28, NO. 1, FEBRUARY 2013) But I don’t know how to start.😔... May anyone please give me guidelines for starting my project..

First u've to do load flow analysis for radial distribution system.
after this u can get the idea how to integrate Distributed generation into radial distribution system and how to do reconfiguration.
so choose a good paper and start writing program for load flow of radial dist. system.

Raviteja16First u've to do load flow analysis for radial distribution system.
after this u can get the idea how to integrate Distributed generation into radial distribution system and how to do reconfiguration.
so choose a good paper and start writing program for load flow of radial dist. system.

Sir, thank you for ur reply

Any suggestion for such papers??

VanipdSir, thank you for ur reply

Any suggestion for such papers??

First try to search for papers in Google. If you couldn't get any paper, then i'll suggest some papers for load flow.

y we r nt choosing Conventional METHODS such as Gauss Siedel , NR..... ??

hello, does anybody have finish this work?
i really need help for this one

Vanipdy we r nt choosing Conventional METHODS such as Gauss Siedel , NR..... ??

1. NR & GS methods require solutions of set of equations whose size is of the order of number of the buses. This results in long computation time.
2. For distribution system, Ybus matrix is very sparse => waste of memory storage.

yahya idriashello, does anybody have finish this work?
i really need help for this one

Which type of help you need??? Load flow???

Raviteja16Which type of help you need??? Load flow???

yes sir, i have a load flow program using newton raphson.
but i still confuse how to get the feeder with minimum loss.
really need a help sir.
thanks for replying my post 😀

yahya idriasyes sir, i have a load flow program using newton raphson.
but i still confuse how to get the feeder with minimum loss.
really need a help sir.
thanks for replying my post 😀

#-Link-Snipped-# .... for me too........ 😔

for which

yahya idriasyes sir, i have a load flow program using newton raphson.
but i still confuse how to get the feeder with minimum loss.
really need a help sir.
thanks for replying my post 😀

for which type of system you would like to do load flow???
Transmission or distribution??
U can use modified NR for distribution system also.
Presently i'm working on Distribution Side.
If u r working on Transmission side, u can take some others help...

Raviteja16for which


for which type of system you would like to do load flow???
Transmission or distribution??
U can use modified NR for distribution system also.
Presently i'm working on Distribution Side.
If u r working on Transmission side, u can take some others help...

Sir am using IEEE 69 bus radial distribution system

Raviteja16for which


for which type of system you would like to do load flow???
Transmission or distribution??
U can use modified NR for distribution system also.
Presently i'm working on Distribution Side.
If u r working on Transmission side, u can take some others help...

i am working on distribution side in my country sir...
using ieee 33 and 69 bus the first step.
my present work is make a radial to mesh system and than count load flow by opening switch one by one...
that why i confuse how to count using matlab when one switch is open.
i just know a little about matlab.. really need a help sir..

#-Link-Snipped-# which paper u r following??
am also doing in IEEE 69 bus radial distribution s/m.....

if u can plz give me ur contact id.... for constant replies....

Vanipd#-Link-Snipped-# which paper u r following??
am also doing in IEEE 69 bus radial distribution s/m.....

if u can plz give me ur contact id.... for constant replies....

you can email me here mam : #-Link-Snipped-#
hope that we can help each other.. 😀

hello..mi thesis topic is also d same as above.. " network reconfiguration of radial distribution system using GENETIC ALGORITHIM in MATLAB". Firstly I have to calculate power loss using load flow using forward backward sweep algorithm. pls help me

VanipdSir am using IEEE 69 bus radial distribution system

Ok...
did you take any base paper for load flow????
If not, U can take any one among these papers listed below.
1. "A Direct Approach for Distribution System Load Flow Solutions" by J H Teng, IEEE Transactions on Power Delivery, 2003, 18(3):882-887 (Page numbers).
2. "Topology based approach for Efficient Load flow Solution of Radial Distribution Networks" by KVS Ramachandra Murty, et al; 16th National Power System Conference, 2010, 176-179
3. "Simple and efficient method for load flow solution of radial distribution networks" by D. Das , et al; Electrical power & Energy Systems, 1995, 17(5): 335-346.
4. "A Novel Load Flow Method for Radial Distribution Systems for Realistic Loads" by K Nagaraju, et al; Electric Power Components and Systems, 2001, 39(2): 128-141.
I've idea on these papers for load flow solution of radial and mesh distribution systems.
I can help u for these papers.

yahya idriasi am working on distribution side in my country sir...
using ieee 33 and 69 bus the first step.
my present work is make a radial to mesh system and than count load flow by opening switch one by one...
that why i confuse how to count using matlab when one switch is open.
i just know a little about matlab.. really need a help sir..

counting load flow???
do you mean number of iterations???
if so, try to implement the load flow for radial as well as mesh networks for 33 bus system. Later u can remove the loops one by one in mesh load flow program to count number of iterations...
for IEEE 33 bus system, You'll get less number of iterations for mesh network (with 5 loops) than radial network.

thanku for d repli..
except serial no. 2 I have read other papers and for fbsa mi base is "a simplified approach for load flow analysis of radial network" , K.Vinoth kumar ,M.P.Selvan
I am trying to follow the flowchart but...

shipra jhariyahello..mi thesis topic is also d same as above.. " network reconfiguration of radial distribution system using GENETIC ALGORITHIM in MATLAB". Firstly I have to calculate power loss using load flow using forward backward sweep algorithm. pls help me

first search for papers in internet and select one good paper for load flow.
Try to understand the concept in that paper and then go for programming.
If you get any doubts in concept or programming, post in crazyengineers..
We are here to help you..

shipra jhariyathanku for d repli..
except serial no. 2 I have read other papers and for fbsa mi base is "a simplified approach for load flow analysis of radial network" , K.Vinoth kumar ,M.P.Selvan
I am trying to follow the flowchart but...

Just now i read your paper...
Its a good one..
and authors presented their idea in very easy manner.
They have given each and every step for programming also...
Then where u r getting the problem?????

yes ofcourse...I have the theory knowledge about Forward backward algorithm and also started matlab coding where I found only current injection at any node say (n) assuming flat voltage Vn=1+j*0. But in line charging current, how voltage has to be take Vb..?