Software Solution for Modeling, Sizing, and Allocation of Active Power Filters in Distribution Networks
Round 1
Reviewer 1 Report
the paper is well written with a good structure and the proposed software solution is clearly described and the case study results are analysed in details. However, the paper needs to do some minor revisions to correct some grammatical mistakes and some not well organized sentences in the paper.
Author Response
The authors would like to thank the Reviewer for the effort in reviewing the paper. The proofreading by a native speaker has been done and included in the new revision.
Reviewer 2 Report
What are the contributions of this paper? Do the authors propose a new algorithm for the simulation of power systems? Is the development of software to perform frequency-domain simulation and harmonic analysis a contribution? The authors must clarify the contributions of the paper.
The models presented in Section 3 are existing models.
The authors need to proofread the paper from a native speaker.
Is the "pqs-core" software commercialized?
What is the acronym, APF?
Author Response
The authors would like to thank the Reviewer for the effort in reviewing the paper.
Comment 1: What are the contributions of this paper? Do the authors propose a new algorithm for the simulation of power systems? Is the development of software to perform frequency-domain simulation and harmonic analysis a contribution? The authors must clarify the contributions of the paper.
Answer: The authors' original contribution is the development of a fast and flexible modelling and simulation library with a new algorithm based on the frequency domain method and linear algebra. This algorithm allows the inclusion of nonlinear elements in simulations, such as constant power loads or APFs, described later in the article. Furthermore, the flexibility of the proposed solution makes the use of additional elements dependent on higher harmonics in the models possible. An example is the proposed transformer model, taking into account power losses from eddy currents for higher harmonics. The computational efficiency of this solution allows application of the proposed approach to modelling and simulation in case of optimization problems of the power supply system in a steady state.
A relevant paragraph related to this comment has been added to the introduction section.
Comment 2: The models presented in Section 3 are existing models.
Answer: That's right - these are not completely new models but:
- The load model has a constant power which would not be possible without the proposed iterative element.
- The APF model allows to account for the finite filtration efficiency and power losses.
- The transformer model takes into account eddy current losses for higher harmonics.
All this is explained in the article content.
Comment 3: The authors need to proofread the paper from a native speaker.
Answer: The proofreading by a native speaker has been done and included in the new revision.
Comment 4: Is the "pqs-core" software commercialized?
Answer: The software is currently under development and now is used only to carry out research works, this allows the results to be verified. Later, it may be commercialized but the authors also consider a free license for non-commercial research and scientific projects.
Comment 5: What is the acronym, APF?
Answer: APF is an active power filter. Abbreviation section has been added to the paper.
Reviewer 3 Report
The authors have done a very good job. They have clearly demonstratedthe suitable software for such analysis which is really important. In
addition to that brute force algorithm has been adopted resulting and
the results clearly manifest that the harmonics have been reduced
employing the active filter models.This is a very important aspect in a
distribution network in terms of power quality. My only concern is if
you can add more references related to power quality in terms of similar
aspect, it will make the literature search comprehensive as well. Here
are some for your references if you could include them in your paper
that brings more in terms of power quality in the distribution network.
I am recommending your paper towards publication with minor revisions.
Author Response
The authors would like to thank the Reviewer for the effort in reviewing the paper. Unfortunately due to the publisher policy we could not take into account your proposals of references.
Round 2
Reviewer 2 Report
The authors have properly addressed Reviewer's comments.
