What I suggested was only real power loss minimization. You can put costs on reactive power if you want to minimize reactive power loss too. Simply add another ng rows to the gencost matrix.
-- Ray Zimmerman Senior Research Associate 211 Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On May 11, 2010, at 10:16 AM, gsh wrote: Dear Dr. Zimmerman, I can find your suggestion is easy to minimize the real power losses. The total real losses can be expressed as the total real generation power minus the total real load, i.e. Sum(Pgi). c2i=0, c1i=1, c0=0. But only the real power is considered. In your method, is the reactive power generation also considered for minimization? Is the loss minimization equivalent to real power loss minimization? Many Thanks > From: [email protected]<mailto:[email protected]> > To: [email protected]<mailto:[email protected]> > Date: Tue, 11 May 2010 08:38:32 -0400 > Subject: Re: Loss minimization objective function in MATPOWER OPF > > The easiest way to get MATPOWER to do loss minimization is to give all of the > generators an identical linear cost function. Then minimizing the generation > cost will also minimize the total generation. For a fixed load, this is the > same as loss minimization. > > -- > Ray Zimmerman > Senior Research Associate > 211 Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > On May 11, 2010, at 6:06 AM, Anirudh Raghavan wrote: > > > Hi > > > > I am new to Matpower and am required to perform OPF for a 30-bus > > system (case 30). Can you tell me how to change the OPF formulation > > from cost minimization to transmi! ssion losses minimization? > > > > I read something in the paper on 'MATPOWER's extensible architecture > > for OPF' on f(x) + fu(x,z) but could not fully understand it. Can you > > please explain how to achieve this alternative formulation in simple > > terms. > > > > Thanks > > Anirudh > > > > > ________________________________ 搜索本应是彩色的,快来体验新一代搜索引擎-必应,精美图片每天换哦! 立即试用！<http://cn.bing.com/?form=CRMADS> -
