Distributed Economic Control for AC/DC Hybrid Microgrid
Round 1
Reviewer 1 Report
A new double-layer droop control mode of island AC / DC microgrid is proposed to realize the autonomous and economic operation of island AC / DC microgrid is proposed in article.
The article is written quite carelessly. Authors should refer to the following issues:
The paper contribution should be more precise and more explained in the introduction section.
The impact of research on practice should be more discussed in the conclusion.
General editorial notes:
- Is the first paragraph of the Introduction a mistake?
-all figures should be referenced in the text of the article. The following phrases should not be used: "can be represented by the following figure:" – (line 121-122 of article).
- there is a very large number of foreign language (probably Chinese) inserts in the text of the article. This is incomprehensible to the reader, and errors of this type should be eliminated.
- All drawings should have a similar graphic form (font sizes, etc.). Some figures differ in form from others, e.g. in Fig. 6 and Fig. 7.
- The use of the phrase "simulation experiment" is inappropriate. Please use more simulation investigation or simulation only.
- The paper has a type of error in many places. Check the paper and correct all the typo errors from the article
Author Response
Thank you very much for the valuable advice from the experts on the problems that arise in the article, and I have made appropriate changes to the revised article in response to the shortcomings of the article. Here, here's an explanation of what needs to be explained in the article.
Point 1: The paper contribution should be more precise and more explained in the introduction section.
Point 2: The impact of research on practice should be more discussed in the conclusion.
Response 1,2: The relevant discussion of article 42-53 adds relevant statements of the contribution and main work of this article. In the conclusion section 520-522 to increase the scope of practical application of this article related introduction.
Point 3 Is the first paragraph of the Introduction a mistake?
Response 3: I’m sorry, the first line is wrong and has been deleted.
Point 4.all figures should be referenced in the text of the article. The following phrases should not be used: "can be represented by the following figure:" – (line 121-122 of article).
Response 4: All similar issues in the article have been resolved, thank you for your help with the shortcomings of the article.
Point 5.there is a very large number of foreign language (probably Chinese) inserts in the text of the article. This is incomprehensible to the reader, and errors of this type should be eliminated.
Response 5: All foreign language representations have been corrected, thank you for your positive.
Point 6 All drawings should have a similar graphic form (font sizes, etc.). Some figures differ in form from others, e.g. in Fig. 6 and Fig. 7.
Response 6: All graphics of different sizes have been re-intercepted and thank you for your valuable comments on article improvements.
Point 7 The use of the phrase "simulation experiment" is inappropriate. Please use more simulation investigation or simulation only.
Response 7: The expression has been modified from "simulation" to "simulation". Thank you for your suggestion.
Point 8 The paper has a type of error in many places. Check the paper and correct all the typo errors from the article
Response 8: The article checks for spelling errors and if there are similar questions, please correct them.
Reviewer 2 Report
Following are my observation/queries that need to be addressed
- Remove the first paragraph in introduction section…be careful while submitting the manuscript.
- What is “fan” in second paragraph of introduction section (see line 30)
- Many sentences need to be reframed to have more clear meaning. Paragraphs are repeated (line 59-73)
- Novelty of the work is not clear. Introduction section is not focused.
- Tables1-2, should be completely in English Language .
- How the coefficients mentioned in Table 1 are obtained? Give reference if any.
- Line 53, unit of load can not be in kV.
- What about the effect on IC when DG 5 gets disconnected after sometimes in Fig 6?
- Are the DGs in AC subnet synchronised with each other (see Fig. 7a)
- What is the reason behind voltages get decreased in Fig 8a after 6s following load rise under the action of traditional droop control loop?
Author Response
Response to Reviewer 2 Comments
Thank you very much for the valuable advice from the experts on the problems that arise in the article, and I have made appropriate changes to the revised article in response to the shortcomings of the article. Here, here's an explanation of what needs to be explained in the article.
Point 1: Remove the first paragraph in introduction section…be careful while submitting the manuscript.
Response 1: I’m sorry, the first paragraph is wrong, I have deleted the relevant statement in the body of the modification.
Point 2 What is “fan” in second paragraph of introduction section (see line 30)
Response 2: I’m sorry, "fan" is an error caused by a translation error, the relevant expression here has been corrected to "wind power generation ".
Point 3 Many sentences need to be reframed to have more clear meaning. Paragraphs are repeated (line 59-73)
Response 3: Appropriate limitations and amendments have been made to the repetitive formulations that appear in lines 59-73.
Point 4 Novelty of the work is not clear. Introduction section is not focused
Response 4: The innovation of the article has been modified in the red section of line 42-53.
Point 5 Tables1-2, should be completely in English Language .
Response 5: I’m sorry for personal reasons the article has a similar language problem, and the relevant foreign language representations have been revised to English.
Point 6 How the coefficients mentioned in Table 1 are obtained? Give reference if any.
Response 6: The data acquisition of cost factors refers to the design method in the literature, and the actual data are different, but remain at the same order of magnitude.
Point 7 Line 53, unit of load can not be in kV.
Response 7: The load is measured in constant power load in kV.A. units.
Point 8 What about the effect on IC when DG 5 gets disconnected after sometimes in Fig 6?
Response 8: 0-0.3s, DG5 is disconnected, at which point only DG4, DG6 is allocated active power, DG5 is not active power distribution, so as shown in Formula 13, at this point figure 6.a 0-0.3 s when the IC of DG5 is only determined. 6.b because the algorithm takes into account the discrete consistency between distributed power supplies, DG5 allocation cost micro-increment will take into account the impact of other distributed power supplies on DG5, reduce the impact of DG5 cost increment, so the cost of distributed power supply compared to the traditional control only formula 13 will be significantly reduced.
Point 9 Are the DGs in AC subnet synchronised with each other (see Fig. 7a)
Response 9: Figure 7.a, in traditional sagging control, the frequency reference value between distributed power supplies is set to 50Hz, but the specific frequency will fluctuate slightly with the change of conditions, distributed power supply is working independently, not fully synchronized.
Point 10 What is the reason behind voltages get decreased in Fig 8a after 6s following load rise under the action of traditional droop control loop?
Response 10: Figure 8.a, the voltage under the traditional sagging control method decreases when the fault resistance increases at 0.6 s, at which point the increased resistance is a constant power load, at which point the power demand of the grid in the line increases, but because the connection is parallel resistance, the line impedance is decreased, by the formula P = U2/R, when the resistance value drops significantly, the voltage will decrease.
Round 2
Reviewer 1 Report
All my suggestion has been taken into account and indicated problems have been solved. Additional comments, which have been added on a request of the other reviewers also improve the scientific level of the paper. Therefore, in my opinion, the paper in the current version is suggested to be accepted in Electronics Journal.
Author Response
Thank you very much for your suggestions on the shortcomings of the paper, I have checked the spelling problems in the paper again, thank you for the suggestion.
Reviewer 2 Report
Load unit should not be in "kV.A" rather it should be "kVA"
Author Response
Thank you very much for your valuable suggestion, I have fixed the unit of the load to "kVA" while checking to fix some spelling errors that appear in the article.
