PONE-D-22-00222Research on Supporting Mechanism of Reactive Power Service of PV System to Grid Energy Efficiency Based on Multi-time and Space-time OperationPLOS ONE

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PLOS ONE

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Additional Editor Comments:

According to the reviewers' comments, this paper needs a major revision before it can be further considered. The authors are expected to carefully revise this paper by addressing all the issues raised by the reviewers.

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Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Is the manuscript technically sound, and do the data support the conclusions?

The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented.

Reviewer #1: Yes

Reviewer #2: Yes

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2. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #2: Yes

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3. Have the authors made all data underlying the findings in their manuscript fully available?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #1: Yes

Reviewer #2: Yes

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4. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #1: Yes

Reviewer #2: Yes

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5. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: The author presented a study on Mechanism of Reactive Power Service of PV System to Grid Energy Efficiency Based on Multi-time and Space-time Operation. The study is interesting, which I think merits a publication. However, I have the following comments:

1) The authors should consider harmonic issue and discusses how the proposed solution can mitigate the said problem. An extensive review of research in harmonic mitigation effort has been published in ["Advances in reduction of total harmonic distortion in solar photovoltaic systems: A literature review", International journal of energy research] and this can serve as a starting point for carrying out this addition. A research article on harmonic mitigation of PV system has also been published in ["Predictive Adaptive Filter for Reducing Total Harmonics Distortion in PV Systems", Energies]. The author can choose to either discuss the harmonic mitigation effort in a new section or perform an additional harmonic analysis.

2) The authors should benchmark their work with similar studies performed in ["A high-gain reflex-based bidirectional DC charger with efficient energy recycling for low-voltage battery charging-discharging power control", Energies], ["A new combined boost converter with improved voltage gain as a battery-powered front-end interface for automotive audio amplifiers", Energies] and ["Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage", Energies].

Reviewer #2: The article presents an interesting Research on Supporting Mechanism of Reactive Power Service of PV System to Grid Energy Efficiency Based on Multi-time and Space-time Operation. the article is well written, but it may be let down at its current form due the lack of flow or presentation quality:

1- The main contribution of the article is not clearly highlighted.

2- The introduction is too long and as a reader we may loss the main point of the article. Please revise it with better flow that highlights the issue and the contribution of the research.

3- All figures quality are not acceptable especially Fig 1. Please redraw this figure and enhance the fonts quality in others.

4- Ref 2 is not cited in the text, and there is no any reference of last 3 years!!!.

5- Adding a table of abbreviation could clear many points to readers.

6. Table of comparison of conducted work and related works in literature will point out the improvement of the findings.

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Reviewer #1: No

Reviewer #2: Yes: Dr. Mohamed Salem

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Research on Supporting Mechanism of Ancillary Service of PV System to Grid Energy Efficiency Based on Multi-time and Space-time Operation

PONE-D-22-00222R1

Dear Dr. Shao,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication.

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Kind regards,

Ziqiang Zeng, Ph.D.

Academic Editor

PLOS ONE

Additional Editor Comments (optional):

Based on the referees' review comments, this paper could be accepted.

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation.

Reviewer #1: All comments have been addressed

Reviewer #3: All comments have been addressed

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2. Is the manuscript technically sound, and do the data support the conclusions?

The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented.

Reviewer #1: Yes

Reviewer #3: Yes

**********

3. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #3: Yes

**********

4. Have the authors made all data underlying the findings in their manuscript fully available?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #1: Yes

Reviewer #3: Yes

**********

5. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #1: Yes

Reviewer #3: Yes

**********

6. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: All comments have been addressed and there is no more additional comments. Thank you for the addressing the comments.

Reviewer #3: (No Response)

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7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files.

If you choose “no”, your identity will remain anonymous but your review may still be made public.

Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #1: No

Reviewer #3: No