Optimal Dispatch Strategy for a Distribution Network Containing High-Density Photovoltaic Power Generation and Energy Storage under Multiple Scenarios

Round 1

Reviewer 1 Report

In this article, an algorithm is developed dedicated to solving the problems derived from the connection of photovoltaic solar energy sources, or their storage devices, to the electrical grid, adjusting to the variability of prices and with the premises of maintaining voltage stability within certain limits, as well as minimizing losses.

The topic of the article is appropriate for the journal Inventions.

The methodology used to carry out the algorithm is appropriate and adjusts to the previous conditions.

The bibliography used is extensive and current. However, authors should adhere to the journal's style guidelines. Each reference should begin with the authors' last name, followed by the initial or initials of their given names. In magazines, the year of publication should be in bold.

In my opinion, this is a good article, although it is excessively theoretical. For this reason and to make this article more attractive to the readers of the journal, I would ask the authors to include in the manuscript responses to the following comments:

1) The five scenarios with different light radiation intensities analyzed in the manuscript appear to be statistical data. Is this correct.?

2) How would its application in any practical case affect the algorithm's operation.?

3) Should the transformer operation in Figure 1 be adapted when the solar panels or batteries inject energy into the electrical grid.?

4) What practical values would Uimin and Uimax have in equation (23)?

The English writing of the manuscript should be improved. Repetitive use of “in order to” should be avoided. The use of commas should also be improved.

Author Response

Dear Reviewer:

We would like to submit the revised manuscript entitled “Optimal Dispatch strategy for a Distribution Networks containing High-density Photovoltaic Power Generation and Energy Storage under Multiple Scenarios”, which we wish to be reconsidered for publication in “Inventions”. No conflict of interest exists in the resubmission of this manuscript, and the manuscript has been approved by all the authors for publication.

We are grateful to the editors and reviewers. We have done our best to revise this paper following the comments. If the revision is unsatisfactory or the reviewers have any other questions/suggestions, we will be very glad to further improve our paper.

We deeply appreciate your reconsideration of our manuscript, and we look forward to receiving comments from the reviewers again.

Thanks and best regards.

Langbo Hou

North China Electric Power University
E-mail: [email protected]

Author Response File: Author Response.pdf

Reviewer 2 Report

Dear authors, this is an interesting work and deserves publication but you must make an effort to improve some aspects of it. 

a) dear authors, first of all the introduction section needs to include a set of bullet points which will summarize the most important novelties of the paper. 

b) Also we need to increase the number of references. The paper only has 40 references. I am very active in this topic with years of research so I recommend that in this paper you add a number of papers. Below please find some papers that are very relevant to your work and will enhance it. You can add them in the introdutory literature review.

1. This is a similar approach conducted in a microgrid case:
T. Wang, D. O’Neill and H. Kamath, "Dynamic Control and Optimization of Distributed Energy Resources in a Microgrid," in IEEE Transactions on Smart Grid, vol. 6, no. 6, pp. 2884-2894, Nov. 2015, doi: 10.1109/TSG.2015.2430286.

2.  An interesting approach involving storage
C. D. Rodríguez-Gallegos et al., "A Siting and Sizing Optimization Approach for PV–Battery–Diesel Hybrid Systems," in IEEE Transactions on Industry Applications, vol. 54, no. 3, pp. 2637-2645, May-June 2018, doi: 10.1109/TIA.2017.2787680

3. An important paper showing the economic value of storage, known as 'option value', in a distribution grid with solar PV.
S. Giannelos, I. Konstantelos and G. Strbac, "Investment Model for Cost-effective Integration of Solar PV Capacity under Uncertainty using a Portfolio of Energy Storage and Soft Open Points," 2019 IEEE Milan PowerTech, Milan, Italy, 2019, pp. 1-6, doi: 10.1109/PTC.2019.8810522.

4. A paper that involves the entire economic valuation of storage and other smart appliances under uncertainty, for distribution grids with much solar PV
I. Konstantelos, S. Giannelos and G. Strbac, "Strategic Valuation of Smart Grid Technology Options in Distribution Networks," in IEEE Transactions on Power Systems, vol. 32, no. 2, pp. 1293-1303, March 2017, doi: 10.1109/TPWRS.2016.2587999.

c) In section 2.2. please include examples of units/dimensions for the variables  e.g. the power in MW (or in per unit ) etc. Since we deal with distribution, the units are in kW

d) Regarding figure 3, can you include the exact website (if exists) that has the details and data for this grid . This can be of use to future researchers.

e)Figure 4: what regions can be characterized by such curve? for example, europe? china?

f)
In 2.6 you can include a bit more text describing it. Maybe some 2-3 references also. 

g) Section 4 conclusions; please also include in bullet points key results and conclusions. And also include some references for future work. I have worked many years in this area. So , I can mention some future work that is very relevant to your paper. Please consider including the below publications.

1. The below is an Energies paper that uses the Backwards Induction method to quantify how a technology can contribute to the security of electricity supply in distribution grids. This methodology can be used to evaluate storage in the future: 
Giannelos, S.; Borozan, S.; Strbac, G. A Backwards Induction Framework for Quantifying the Option Value of Smart Charging of Electric Vehicles and the Risk of Stranded Assets under Uncertainty. Energies 2022, 15, 3334. https://doi.org/10.3390/en15093334

2. The below is a paper that includes the modelling of Storage and other smart technologies. They can then all be put together in an optimization framework for distribution grids:
Giannelos, S.; Borozan, S.; Aunedi, M.; Zhang, X.; Ameli, H.; Pudjianto, D.; Konstantelos, I.; Strbac, G. Modelling Smart Grid Technologies in Optimisation Problems for Electricity Grids. Energies 2023, 16, 5088. https://doi.org/10.3390/en16135088

3. Reinforcement learning approaches can be utilized for storage in solarPV grids:
Z. Rostmnezhad and L. Dessaint, "Power Management in Smart Buildings Using Reinforcement Learning," 2023 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), Washington, DC, USA, 2023, pp. 1-5, doi: 10.1109/ISGT51731.2023.10066398.

4. Fast frequency response can be included in your analysis as part of future work 
S. Nema, A. Mathur, V. Prakash and H. Pandžić, "Optimal BESS Compensator Design for Fast Frequency Response," 2023 International Conference on Power, Instrumentation, Energy and Control (PIECON), Aligarh, India, 2023, pp. 1-5, doi: 10.1109/PIECON56912.2023.10085831.


Overall, I believe that following these changes , your paper will increase in quality and get published. Feel free also to include more papers from all above authors because their works are relevant to your paper. This way you will increase more the number of references in your interesting work.

Author Response

Dear Reviewer:

We would like to submit the revised manuscript entitled “Optimal Dispatch strategy for a Distribution Networks containing High-density Photovoltaic Power Generation and Energy Storage under Multiple Scenarios”, which we wish to be reconsidered for publication in “Inventions”. Please see the attachment. No conflict of interest exists in the resubmission of this manuscript, and the manuscript has been approved by all the authors for publication.

We are grateful to the editors and reviewers. We have done our best to revise this paper following the comments. If the revision is unsatisfactory or the reviewers have any other questions/suggestions, we will be very glad to further improve our paper.

We deeply appreciate your reconsideration of our manuscript, and we look forward to receiving comments from the reviewers again.

Thanks and best regards.

Langbo Hou

North China Electric Power University
E-mail: [email protected]

Author Response File: Author Response.pdf

Reviewer 3 Report

In the paper is presented an optimal dispatch strategy for minimizing network losses and voltage deviations in to a distribution network with the cooperation of photovoltaic and energy storage. However, minor revisions are required before it could be accepted for possible publication in the Inventions Journal.

Please consider the following remarks:

1.     At first glance, the topic is of actuality even though in the last years the problem of the increasing of number of distributed power sources, especially PV sources, has been intensely treated. The state of the art is up-to-date with references form the last years and the original contributions are clearly presented;

2.     I recommend to be added a paragraph with the organization of the paper at the end of Introduction section;

3.     I appreciate the clear manner of presentation of the proposed optimal dispatch algorithm; I recommended to be included the flowchart of the methodology proposed for optimal dispatch of high-density PV sources and energy storage, based on K-means clustering and particle swarm algorithm;

4.     The results are relevant and the conclusions section locks good .

Author Response

Dear Reviewer:

We would like to submit the revised manuscript entitled “Optimal Dispatch strategy for a Distribution Networks containing High-density Photovoltaic Power Generation and Energy Storage under Multiple Scenarios”, which we wish to be reconsidered for publication in “Inventions”. Please see the attachment. No conflict of interest exists in the resubmission of this manuscript, and the manuscript has been approved by all the authors for publication.

We are grateful to the editors and reviewers. We have done our best to revise this paper following the comments. If the revision is unsatisfactory or the reviewers have any other questions/suggestions, we will be very glad to further improve our paper.

We deeply appreciate your reconsideration of our manuscript, and we look forward to receiving comments from the reviewers again.

Thanks and best regards.

Langbo Hou

North China Electric Power University
E-mail: [email protected]

Author Response File: Author Response.pdf

Reviewer 4 Report

The paper deals with a topic of interest but there are certain weaknesses:

1. There is limited contribution, almost any aspect of the study presented here has been thoroughly investigated in previous pre-published research. 

2. There is no benchmarking against pre-published research to highlight improvements and innovations.

3. Technical aspects like a) reverse power flow or b) load variations are not considered at all.

4. The references list although extended does not include important relevant papers.

Author Response

Dear Reviewer:

We would like to submit the revised manuscript entitled “Optimal Dispatch strategy for a Distribution Networks containing High-density Photovoltaic Power Generation and Energy Storage under Multiple Scenarios”, which we wish to be reconsidered for publication in “Inventions”. Please see the attachment. No conflict of interest exists in the resubmission of this manuscript, and the manuscript has been approved by all the authors for publication.

We are grateful to the editors and reviewers. We have done our best to revise this paper following the comments. If the revision is unsatisfactory or the reviewers have any other questions/suggestions, we will be very glad to further improve our paper.

We deeply appreciate your reconsideration of our manuscript, and we look forward to receiving comments from the reviewers again.

Thanks and best regards.

Langbo Hou

North China Electric Power University
E-mail: [email protected]

Author Response File: Author Response.pdf

Round 2

Reviewer 4 Report

 no further comments