You can contact me off-list and send me your test program, and I will see if I can figure out the problem.
Rui Bo [email protected] ----- Original Message ----- From: duduwolf.leo To: MATPOWER discussion forum Sent: Saturday, January 02, 2010 10:30 PM Subject: Re:Re: Question about state estimation First，great thanks to your kindly help. I am afraid I didn't make myself clear in my last e-mail. My actural problem is that I have already got the data such as IEEE-14 and IEEE-30,and I do understand the use of "measure.PF".However, I am not sure how to change the data in IEEE-14 in order to make it fit for the SE program. For example, in the data of IEEE-14,we have the "real power injection" and "real power flow",I wonder how to change them to PT and PF.I have tried to put them into the program, but it didn't converged. So, I think maybe the type of input I offerred is not right. 在2010-01-02，"BoRui 163" <[email protected]> 写道： Please allow me explain a little bit on the use of the state estimation program. 1) 'measure' is a structure consisting of all measurements. Presently 8 types of measurements are supported including real power line flow through from end, real power line flow through to end, generator real power output, bus voltage angle, reactive power line flow through from end, reactive power line flow through to end, generator reactive power output, bus voltage magnitude (shortened for PF, PT, PG, Va, QF, QT, QG, Vm respectively). Different types of measurements are assigned to different members of the 'measure' structure, such as measure.PF, measure.PT, etc. 2) 'idx' is also a structure indicating the index of a specific measurement in its kind. For example, statement "idx.idx_zPF = [1;2];" means the measurements of the real power at from end of the 1st and 2nd branches are available, which will be fed into SE engine to do state estimation. Another example would be "idx.idx_zVm = [2;3];". It means the voltage magnitude measurements for the 2nd and 3rd buses are available. 3) Please note that the order of the indices in 'idx' should be consistent with the order of measurements in 'measure'. For example, "measure.Vm = [1.04;0.98];", "idx.idx_zVm = [2;3];". These two statements combined indicate the voltage magnitude measurement at 2nd bus is 1.04pu, and 0.98pu at 3rd bus. 4) Please also note that the numbers in 'idx' are all indices, not bus numbers. One can use MATPOWER functions 'ext2int.m' and 'int2ext.m' to do conversion between internal and external bus numbering to further facilitate the use of the program. 5) For more information on the program, please refer to the "cpf_se_intro.pdf" under "extra" folder. Hope this helps. Happy New Year to all! Rui Bo [email protected] ----- Original Message ----- From: duduwolf.leo To: matpower-l Sent: Thursday, December 31, 2009 12:14 AM Subject: Question about state estimation Hi guys: I want to say thank you first,for offerring such a wonderful tool.But,I have met some problems when using the state estimation program.I want to know:How can I initialize the parameters such as idx and measures.I mean, where or which resource I can refer to. Really thank you if I can be instructed.
