and how about bus matrix column 6 ?
" 6 BS Bs, shunt susceptance (MVAr injected at V = 1.0 p.u.)"
but in this case you have to define an objective function and solve an
optimization problem.
i used that for ieee 33 bus and the result was good.
On Wed, Sep 9, 2020 at 5:20 PM yangyang <980182...@qq.com> wrote:
> Dear Alireza SalimAmini
>
> Thank you for your care and blessing. I think I have implemented this
> using runuopf(), a built-in function of matpower to do mixed unit
> commitment and OPF. In such cases where geneators are used to model shunt
> capacitors and reactors, just add a few generators whose real power
> generation Pg is zero and reactive power generation Qg set at a constant
> value. The Qmax and Qmin in generator data has to be identical with the set
> Qg. Notably, the Pmax and Pmin cannot be set to zero because runuopf() will
> merely deal with generators whose Pmin is greater than zero (see source
> codes of uopf() ). To get "shunt" generators involved as candidates of unit
> commitment programming only calls for Pmin and Pmax set at a very small
> number numerically, say, 1e-6 and 1e-5. This minor active power injection
> will hardly affect the power flow but can get "shunt" generators involved.
>
>
> ------------------ 原始邮件 ------------------
> *发件人:* "MATPOWER discussion forum" <a.salimam...@gmail.com>;
> *发送时间:* 2020年9月9日(星期三) 下午2:22
> *收件人:* "MATPOWER discussion forum"<matpowe...@list.cornell.edu>;
> *主题:* Re: optimal power flow with unit commitment using mixed integer
> programming
>
> hi
> i wish u are healthy at this conditions( Covid19)
> i think if you adjust Qmin and Qmax of capacitors at 'gen' matrix equal to
> 6Mvar, it will help , and you can use status ( it is a column in gen matrix
> as came below) of that capacitor a variable for reactive power balance.
>
> '8 GEN_STATUS status, > 0 - in service, <= 0 - out of service'
>
> On Wed, Sep 9, 2020 at 6:34 AM yangyang <980182...@qq.com> wrote:
>
>> Dear all,
>> I am working on optimal power flow whose objective is the cost of
>> generation plus the quadratic deviation of voltage magnitudes to 1.0. The
>> special part of the optimization lies in it that it has to include shunt
>> capacitors and reactors in this network apart from conventional generators,
>> which can control reactive power and voltages. In this network, the
>> capacitors and reactors are modelled as discrete constant reactive power
>> loads, whose values are like 0, -6MVar, -12MVar, -18MVar, etc. I think a
>> practical implementation is to take these shunt capacitors as a bunch of
>> generators whose active power generation is set to 0 and reactive power
>> generation set to constant values. Say, a chain of 6*6MVar shunt capacitors
>> at one bus can be viewed as 6 generators at this bus whose active gen is 0
>> and reactive gen is 6MVar. On my opinion, these shunt capacitor or reactor
>> generators should not change their active and reactive generation in OPF
>> but only decide which generators should be on, just like unit commitment,
>> while other conventional generators will change their active and reactive
>> generation continously as conventional OPF. I dont know if it is practical
>> using matpower. Despite the miqps_matpower function and the new-released
>> mp-opt-model, it seems that no one has done so ever. Would you please help
>> me with it? Thank you for you kind patience and consideration.
>>
>
