Electric DQ0 Library Model for Smart Grid Simulation
Petra Raussi
Round 1
Reviewer 1 Report
Comments and Suggestions for Authors1. The abstract is loose and generic. No motivation, numerical findings, and contributions are mentioned. the abstract should be rewritten
2. Also, no novelty is highlighted in the abstract. The abstract should be rewritten in a way where the motivation, objectives, methodology, and findings should be discussed.
Make sure to answer the following questions: a) which problem did you study and why it is important? b) which approach you are following? c) what are the main results obtained by developing the library? d) which conclusions can you draw from your results? None of these are answered in your abstract.
3. The algorithm should be explained by adding a flowchart to ease following the procedure.
4. ROCOV and ROCOF are incorrectly defined. You should define them like this “rate of change of frequency/voltage.
5. How can the library apply dq0 on Monophasic system? Is it possible without a fictitious axis?
6. The features of the proposed library have been stated but not compared or verified numerically. The results should be compared with other software results to verify the efficacy of the algorithm
7. English language needs polish
8. Fig. 9 and Fig. 10 are poorly visualized with no axes label
9. In general, in all figures the labeling and the units are missing
Comments on the Quality of English Languagemany English words are written incorrectly. the phrasing of some sentences should be made in such a technical way.
Author Response
We would like to thank you for your valuable comments and feedback that has helped us make significant improvements to the previous draft of this article The paper has undergone a comprehensive revision based on your insightful remarks, and we are confident that we have effectively addressed all your comments. You can find the response to the comments below.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for Authors- The journal seems to be mainly focused on chemical engineering, thus why is this paper about electrical modelling submitted here. Smart grids are not mentioned in the scope of the journal.
- First sentence of the introduction is quite vaque, please consider starting the paper with stronger sentence.
- In introduction sentence "However, as this
paper remarks, using the right mathematical approach in the modelling stage /--/", since this remark has not yet been made in this paper I would omit from the sentence the "as this paper remarks" part as you are referring to something that I assume you will discuss in the later parts of the paper, which you cannot assume that the reader has yet read.
- The part of the introduction where other tools and their problems are described would really benefit from a table that lists all the tools and their characteristics, which are described in the text. This would help the readers to understand, which tools have been considered in a holistic manner. Additionally, currently the review of the existing tools is heavily focused on just a couple of them, so organising the exisiting tools as a table would highlight that in the review of the background you have considered several tools, not just a couple of them, in turn making the stated research gap of this paper stronger.
- DIgSILENT PowerFactory, RTDS, ETAP, etc. are also EMT simulation tools; please include these into your background review as well.
- For instance RTDS RSCAD includes also models for multi-energy components such as fuel cells, so more ellaboration would be good in this paper to justify the models for smart grid and power-to-x components in this paper.
- There is a lot of work on similar topic conducted by RWTH Aachen, e.g. DPSim (https://dpsim.fein-aachen.org/docs/), thus it would be good for the authors to compare their proposal with this work.
Comments on the Quality of English Language- While English of the paper is understandable it would definitely benefit from English-speaking proof-reader or grammar checking software (e.g. Grammarly) as some of the sentence structures are not very typical for English, requring the reader to read them at least twice
Author Response
We would like to thank you for your valuable comments and feedback that has helped us make significant improvements to the previous draft of this article The paper has undergone a comprehensive revision based on your insightful remarks, and we are confident that we have effectively addressed all your comments. You can find the response to the comments below.
Author Response File: Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for AuthorsYour manuscript entitled: "Electric DQ0 Library Model for Smart Grid Simulation " touches important question of modeling the smart grid systems, optimization of production and management of the flow of electricity in such systems. The article has a good potential, however, it should be improved in several ways slightly.
1. The second part of the article shows the results of simulation calculations related to balancing the power produced by sources operating in the smart grid system on the proposed example. However, there is a lack of input data, which makes the results difficult to interpret.
2. It would be worth to compare obtained results with those obtained from simulations based on available models/libraries and algorithms.
3. The article emphasizes that it is important that the introduced models should allow for maintaining the appropriate balance between accuracy and performance, however, no reference was made to this assumption.
4. In formula 1 is missing a comma.
5. Please revise the formatting the formulas 7-12.
6. There is no explanation of some symbols used in the formulas.
7. Please revise all figures for: axis descriptions, units, illegible axis descriptions.
Author Response
We would like to thank you for your valuable comments and feedback that has helped us make significant improvements to the previous draft of this article The paper has undergone a comprehensive revision based on your insightful remarks, and we are confident that we have effectively addressed all your comments. You can find the response to the comments below.
Author Response File: Author Response.pdf
Reviewer 4 Report
Comments and Suggestions for AuthorsThe paper introduces two simulation libraries, ELECTRIC_DQ0 and SMART_GRID & POWER2X, developed in the EcosimPro environment. These libraries aim to provide an integrated power systems simulation environment capable of addressing electric problems from Electro Magnetic Transient (EMT) to load flow level using a schematic drag-and-drop approach.
The core of the libraries is ELECTRIC_DQ0, providing a phasor-based framework for electric system modeling. It includes components for sources, loads, branches, power converters, and machines. The libraries support monophasic and triphasic systems with various configurations, including delta and wye connections. They accommodate balanced and unbalanced conditions, with a focus on Smart Grid and Power2X systems. The paper emphasizes the need for multi-domain modeling in the context of the evolving and interconnected bidirectional power systems, integrating not only electric but also fluid, mechanics, thermal, and chemical aspects.
The paper claims to be the first attempt to create an integrated power systems simulation environment addressing electric problems comprehensively. The use of an object-oriented, multi-purpose modeling and simulation framework is highlighted, offering a user-friendly approach through schematic drag-and-drop features. The paper emphasizes the importance of the mathematical approach in the modeling stage, promoting an accuracy-simplicity trade-off for maximizing the real value of simulation systems.
The paper acknowledges a numerical bottleneck in EMT modeling, particularly in dealing with discrete events from nonlinear components, potentially limiting the performance of combined simulations. While discussing existing simulation tools, the paper notes limitations in tools like Simulin Phasor Mode and SimScape Electrical, suggesting a gap in the market for a more versatile and integrated solution. The complexity of some existing tools is highlighted, indicating that they might not be intuitive and easy to use for average users, especially when dealing with certain functionalities.
The paper rightly emphasizes the critical role of simulation tools in the evolving landscape of Smart Grids and Power2X systems, especially in Real Time applications, such as Prosumer-Centric Self-Sustained Smart Grid Systems, doi: 10.1109/JSYST.2022.3156877. Thus, the provided related work must be substantially revised. The paper's call for integrating multi-domain modeling to address the complexities of future power systems is valid and aligns with the evolving nature of energy grids. The paper lacks details on reproducibility aspects, and validation methodologies for the proposed libraries are not explicitly discussed. Providing such details would enhance the credibility of the contributions.
Overall, the paper offers a promising approach to address the challenges in electric system modeling, but further validation and consideration of numerical efficiency are crucial for its practical applicability. The emphasis on multi-domain modeling aligns with the growing complexity of modern power systems.
Comments on the Quality of English LanguageOverall, the paper offers a promising approach to address the challenges in electric system modeling, but further validation and consideration of numerical efficiency are crucial for its practical applicability. The emphasis on multi-domain modeling aligns with the growing complexity of modern power systems.
Author Response
We would like to thank you for your valuable comments and feedback that has helped us make significant improvements to the previous draft of this article The paper has undergone a comprehensive revision based on your insightful remarks, and we are confident that we have effectively addressed all your comments. You can find the response to the comments below.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Comments and Suggestions for AuthorsThanks for addressing my questions
Reviewer 4 Report
Comments and Suggestions for AuthorsMy comments have been addressed.
