Advanced State Estimation Approach for Partially Observable Shipboard Power Systems
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsDear Authors,
the article presented is quite interesting. It deals with the problem of the operation of a ship's electrical network, in particular in the case of incomplete information on its current state. It seems that in the context of limited generation resources and high energy consumption on board a ship, such a topic is very relevant from many points of view. My overall impression of the article is quite good. I outline its strengths and weaknesses below. Please consider my comments in the revised version of the article.
Strengths:
- The article is clear, well organised.
- The drawings are of good quality, easy to read.
- The mathematical apparatus used fairly well described.
Weaknesses:
- contribution poorly indicated,
- there is a chapter on simulation in the article, no details of simulation, indication of simulation environment etc,
- the summary is far too laconic.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsThe authors of this paper present an interesting topic regarding the state-estimation of a shipboard power system, and introduce a novel method in this regard. Simulation results confirm that the newly introduced method is superior in terms of performance and speed. The paper is well-written, and easy to follow and understand. I only have some minor comments:
1. Ensure that all acronyms are properly introduced and explained. For example, Table 1 and Figure 3 contain acronyms that have not been introduced at all.
2. The authors should avoid using the first person, i.e. "we" as on lines 79, 80, 83, but rather replace "we" by "the authors". There are many other instances where "we" is used.
3. The electrical parameters of the simulated shipboard system are not given, i.e. rated voltage, generator main parameters, cables details, loads, etc. All details necessary for the reproducibility of the simulation results must be included in the final version of the paper.
4. The simulation results show that the proposed state-estimation method is faster that the method based on genetic algorithms. However, the comparison is based on a i7-6500U processor. Please comment how these methods will fare on a typical controller, such as an industrial PLC, used in maritime applications. What will be the differences in terms of speed for such hardware?
5. Please check the title. I believe that "Advances" shall be replaced by "Advanced".
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for AuthorsThe first criticism is that the literature review is poor. Most references consist of conference proceedings, technical reports, and apparently dissertations, some of which are very old. The state-of-the-art review should focus on fault-tolerant techniques while considering articles published more recently in reputable journals. And please, do not start a sentence with a reference number.
The choice between distributed and centralized control in shipboard power systems depends on factors such as the size and complexity of the vessel, redundancy requirements, mission profile, and the trade-off between system reliability and complexity. In practice, many shipboard power systems use hybrid approaches that combine elements of both distributed and centralized control. For example, critical subsystems may have local controllers for fast response times, while a central controller manages global optimization and coordination. So, could you please elaborate further on the proposed approach in this context?
Some shortcomings of state estimation include sensitivity to measurement errors, modeling inaccuracies, limited observability, high computational burden, and dependency on communication networks, among other aspects. It would be desirable to include a comparative table comprising other similar approaches and the proposed solution.
Does the framework adopted for the analysis performed in Section 4 and shown in Fig. 3 reflect a real practical scenario? Which software was used to perform the simulations? Please, elaborate.
As for the claims presented in lines 451-454, the authors must compare the results with other similar solutions. Overall, they are not supported by sound evidence.
Other nontechnical issues include the following:
- Some figures are blurred when zooming in. They MUST be replaced with high-quality vector graphics (EPS, WMF, EMF, etc).
- Please, include a space between numbers and units.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 4 Report
Comments and Suggestions for AuthorsI studied the article called "Advances State Estimation Approach for Partially Observable Shipboard Power Systems" and thought it was more practical.
I would like to point out that the resolution of the equations of state is complex, and is covered for professionals.
there are many aspects to clarify.
Line 43: vibration?
line 60, you don't start a sentence with [16] (21, 23)
line 100: find a better term than illegal, check
figures 1 and 3: the areas have reversed from stern to bow. Check
table 1: put space between number and unit of measurement, put DC voltage, describe VL, SL, NL
figure 5: separate it based on case 1 and case 2, comment better on the energy flows
broaden the conclusions
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Comments and Suggestions for AuthorsDear Authors, Thank you for your well-prepared response to the reviewer and making changes. I have no further comments, I believe the article can be published.
Reviewer 3 Report
Comments and Suggestions for AuthorsThank you for addressing all raised concerns comprehensively. Congratulations on your work.
Reviewer 4 Report
Comments and Suggestions for Authorsthe authors worked hard to follow my suggestions, showing good will and ability. There is no impediment to the publication of the paper
