Re: Question regarding Matpower's continuation power flow

x27;s continuation power flow Check twice before you click! This email originated from outside PNNL. Dear friends I have been running the continuation power flow for several networks. In the case of "case2869pegase", I counted 92 rollbacks. However, "events" is a struct with dimension

Question regarding Matpower's continuation power flow

Dear friends I have been running the continuation power flow for several networks. In the case of "case2869pegase", I counted 92 rollbacks. However, "events" is a struct with dimension [1x98]. I was expecting that the dimension of "events" was [1x92], that

Re: Question about the continuation power flow

alf of Young-Hwan Lee Reply-To: MATPOWER discussion forum Date: Thursday, December 28, 2017 at 10:13 AM To: "MATPOWER-L@cornell.edu" Subject: Question about the continuation power flow To whom it may concern, I'm trying to solve an easy problem with case39 using the continuation p

Question about the continuation power flow

To whom it may concern, I'm trying to solve an easy problem with case39 using the continuation power flow. I set the base case as origin, which is PG, PD, QD are all zero. I do not change any values for the target case, which means I just use the initial values. In addition, I set the rea

Re: Continuation Power Flow - Target case data

ussion forum mailto:matpowe...@list.cornell.edu>> Date: Sunday, April 2, 2017 at 12:46 AM To: "matpowe...@list.cornell.edu<mailto:matpowe...@list.cornell.edu>" mailto:matpowe...@list.cornell.edu>> Subject: Continuation Power Flow - Target case data Hi, Forgive me f

Continuation Power Flow - Target case data

Hi, Forgive me for asking but I'm quite new to CPF. What I don't get is the concept of target case data. As I far I can understand, the CPF helps us identify the point of voltage collapse in a network, so what is the relevance of a target case data ? Thank You, Sanjay

Re: load reduction in continuation power flow (CPF)

e behavior? > > Shri > > From: Ray Zimmerman mailto:r...@cornell.edu>> > Reply-To: MATPOWER discussion forum <mailto:matpowe...@list.cornell.edu>> > Date: Thursday, February 16, 2017 at 8:28 AM > To: MATPOWER discussion forum <mailto:matpowe...@list.cornel

Re: load reduction in continuation power flow (CPF)

buses? Do you get the same behavior? > > Shri > > From: Ray Zimmerman > Reply-To: MATPOWER discussion forum > Date: Thursday, February 16, 2017 at 8:28 AM > To: MATPOWER discussion forum > Subject: Re: load reduction in continuation power flow (CPF) > > The code l

Re: load reduction in continuation power flow (CPF)

Zimmerman mailto:r...@cornell.edu>> Reply-To: MATPOWER discussion forum mailto:matpowe...@list.cornell.edu>> Date: Thursday, February 16, 2017 at 8:28 AM To: MATPOWER discussion forum mailto:matpowe...@list.cornell.edu>> Subject: Re: load reduction in continuation power flow (CP

Re: load reduction in continuation power flow (CPF)

The code looks correct to me. I’m not sure why the load margin decreases, but the changes in load (from positive to equally negative) may be forcing the OPF solution into generator dispatch solutions that somehow reduce the load margin. Ray > On Feb 15, 2017, at 10:45 PM, Majid Mehdizadeh

load reduction in continuation power flow (CPF)

Dear sir and matpower committee It is very strange for me that when the load of some PQ buses in IEEE 39 bus test system are reduced and then cpf is performed then the load margin of the system is becoming lower . It should be noted that i use the following code to estimate the load margin of the s

Re: Continuation Power Flow

mailto:sharma_anjal...@yahoo.com>> Reply-To: MATPOWER discussion forum mailto:matpowe...@list.cornell.edu>> Date: Wednesday, December 2, 2015 at 9:09 AM To: MATPOWER discussion forum mailto:matpowe...@list.cornell.edu>> Subject: Re: Continuation Power Flow Thanku so much sir for y

Re: Continuation Power Flow

If by “real power flow” you mean the power transfer, then you can compute it from the lambda and the base and target power injections (loads, generations) according to equations (5.2)–(5.4) in the User’s Manual . The lambdas af

Re: Continuation Power Flow

Type: help mpoption … to get documentation on mpoption() , and check Table C-6 in the User’s Manual . Ray > On Nov 25, 2015, at 1:19 PM, sharma

Re: Matpower- Continuation Power Flow

; > > > > On Fri, Jan 16, 2015 at 12:30 PM, Abhyankar, Shrirang G. < > abhy...@mcs.anl.gov> wrote: > >> runcpf returns a MATPOWER case struct that has the loading/genration >> and the voltages at its last continuation step. By using the option >> '

Re: Matpower- Continuation Power Flow

r and the power area. > > Thanking in advance. > > Nair > > > > > On Fri, Jan 16, 2015 at 12:30 PM, Abhyankar, Shrirang G. <mailto:abhy...@mcs.anl.gov>> wrote: > runcpf returns a MATPOWER case struct that has the loading/genration and the > voltage

Re: Matpower- Continuation Power Flow

ATPOWER case struct that has the loading/genration and > the voltages at its last continuation step. By using the option > 'cpf_stop_at_nose', the continuation power flow will stop when it is near > the nose point. You can then extract the voltages and power from the > MATPOWER

Re: Matpower- Continuation Power Flow

runcpf returns a MATPOWER case struct that has the loading/genration and the voltages at its last continuation step. By using the option 'cpf_stop_at_nose', the continuation power flow will stop when it is near the nose point. You can then extract the voltages and power from the MAT

Re: Matpower- Continuation Power Flow

to get the values using Matpower using continuation power flow ? I am trying to modify the example code from the manual (I am working on IEEE 39 bus system) define_constants; mpopt = mpoption('out.all',0,'verbose',2); mpopt = mpoption('cpf.stop_at','nose&

Re: Matpower- Continuation Power Flow

ration/load for mpcb and mpct and run the continuation power flow again. > See the MATPOWER User's Manual > <http://www.pserc.cornell.edu//matpower/manual.pdf> for a CPF example on a > test 9-bus case. > > Shri > > From: arun s nair mailto:arunsnair...@gmail.com&

Re: Matpower- Continuation Power Flow

Arun, You have the same generation/load for both the base (mpcb) and target (mpct) cases. What are you seeing is that runcpf is solving the base case over and over again since there is zero power transfer. Use different generation/load for mpcb and mpct and run the continuation power flow

Matpower- Continuation Power Flow

Hi All I am trying to use matpower to evaluate IEEE 39 bus system and I tried to run an example code for runcpf (Continuation Power Flow) define_constants; mpopt = mpoption('out.all',0,'verbose',2); mpopt = mpoption('cpf.stop_at','nose','cpf.step&#

AVAILABLE TRANSFER CAPABILITY CALCULATION BY CONTINUATION POWER FLOW METHOD

Hello sir, The matlab code posted below is used for the calculation of ATC using continous power flow equation. The iteration must limit the ATC on voltage collapse and must display the relevant graphs. But the below code uses a modified runpf subroutine which I am unable to figure it out