A Study on the Estimations of the Tension of the Overhead Wires Using Data from Acceleration Sensors

Round 1

Reviewer 1 Report

This paper proposes a new method of tension estimation to the Overhead Wires based on acceleration sensor data, which minimizes the installation of a tension sensor that is difficult to use in the field. By analyzing the correlation between the data measured by the acceleration sensor and the data measured by the tension sensor, it is deduced the formulations for estimated tension of the overhead wires, and experiments show that the accuracy of this method is acceptable. It is meaningful that the proposed method suggested the possible utilization method of acceleration sensor that could replace tension sensors, and it is expected to contribute to safety management of overhead wires in the future.
There are some problems, which must be solved before it is considered for publication.
In general, there is a lack of theoretical explanation of the relationship between acceleration and tension.
Some figures in your paper are a bit blurry. Please consider replacing them with clearer ones.
In addition, description of formula is not in our style, If the formula is followed by a comma, we tend to start the next paragraph at the top.

 

Author Response

[Comment for Reviewer 1]

There are some problems, which must be solved before it is considered for publication. In general, there is a lack of theoretical explanation of the relationship between acceleration and tension. Some figures in your paper are a bit blurry. Please consider replacing them with clearer ones. In addition, description of formula is not in our style, If the formula is followed by a comma, we tend to start the next paragraph at the top.

 

[Responses]

Thank you for your valuable opinion. The detailed responses to your comments are as follows.

 

Comment 1)

In general, there is a lack of theoretical explanation of the relationship between acceleration and tension.

Response 1)

Thank you for your precious comment. The theoretical explanation of the relationship between acceleration and tension are as follows.

The tension of the overhead wires is caused by the force generated by the movement of the overhead wires due to the load of the overhead wires itself and the wind. If the load of the overhead wires itself is excluded, you can conclude that the tension is increased by the movement of the overhead wires. Since the movement of the overhead wires can be measured through the acceleration sensors, the theoretical background of this study is to estimate the tension of the overhead wires using the data of the acceleration sensors.

In addition, the above written theoretical background for the valuable opinions you provided was reflected to the paper by adding "3.1 Theoretical background of estimating tension of the overhead wires".

 

Comment 2)

Some figures in your paper are a bit blurry. Please consider replacing them with clearer ones.

Response 2)

Thank you for your precious comment. All the blurry figures are replaced or modified.

 

Comment 3)

Description of formula is not in our style, If the formula is followed by a comma, we tend to start the next paragraph at the top.

Response 3)

Thank you for your precious comment. All formulas have been modified.

Author Response File: Author Response.pdf

Reviewer 2 Report

·   1.- Literature review is still limited and the introduction section does not contain recent works.

2.- The image quality of all Figures is poor.

3.- Update refences.

 

 

 

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Author Response

[Comment for Reviewer 2]

1. Literature review is still limited and the introduction section does not contain recent works.
2. The image quality of all Figures is poor.
3. Update references.

[Responses]

Thank you for your valuable opinion. The detailed response to your comments are as follows.

Comment 1)

Literature review is still limited and the introduction section does not contain recent works.

Response 1)

Thank you for your precious comment. Unfortunately, previous studies related to the utilization of acceleration sensor data for tension estimation of overhead wires in distribution system that this study focuses on are still limited. For that reason, there was inevitably a limit to conducting a sufficient review of the previous studies involved. However, we totally agree that it can be seen as a part that lacks sufficient explanation of this situation, so we have added additional descriptions in the introduction part.

In addition, in conjunction with the update of the references you mentioned in other comments, we have added additional reviews of recent relevant studies.

 

Comment 2)

The image quality of all Figures is poor.

Response 2)

Thank you for your precious comment. All the blurry figures are replaced or modified.

 

Comment 3)

Update references.

Response 3)

Thank you for your precious comment. Although there were limitations in conducting reviews of previous studies that exactly matched the subject matter of this study, we have added some of the latest reviews of similar fields.

The list of added references is as follows;

• Hisato Matsumiya; Saki Taruishi; Mikio Shimizu; Go Sakaguchi. Equivalent Static Wind Loads on Snow-accreted Overhead Wires. Structural Engineering International 2022; Volume. 32, pp. 78-91. 1080/10168664.2021.1967255
• Stefano Derosa; Petter Nåvik; Andrea Collina; Anders Rønnquist. Railway catenary tension force monitoring via the analysis of wave propagation in cables. Journal of Rail and Rapid Transit 2020; Volume. 235, pp. 494-504.
• Fan He; Dandan Guo; Liming Chen. Numerical study of contact wire tension affecting dropper stress of a catenary system. Advances in Mechanical Engineering 2021; Volume. 13. https://doi.org/10.1177/1687814021995041

Author Response File: Author Response.pdf

Reviewer 3 Report

There are too many papers reporting signal processing using data from acceleration sensors, and this paper does not demonstrating new insight to this area. So, I recommended this paper should be rejected.

Author Response

[Comment for Reviewer 3]

There are too many papers reporting signal processing using data from acceleration sensors, and this paper does not demonstrate new insight to this area. So, I recommended this paper should be rejected.

[Responses]

Thank you for your valuable opinion. Despite the differences and new insight in this study, we admit that it might not be presented sufficiently in the paper. Thus, we would like to deliver the differences of this study as follows;

1. The main purpose of this study is not to derive new theories, but to solve the difficulties in the actual field by utilizing existing domains.
2. There is no disagreement that there are various studies using data from acceleration sensors, but we would like to say that the proposed method to estimate the tension of the overhead wire, which is one of the power facilities in the distribution system, is extremely limited.
3. We would like to emphasize that the proposed method through this study has differentiated strengths in terms of practical use, and it has large expected effect sizes when it is used.
4. We would like to emphasize that the proposed method conducted in actual field (Gochang Electric Power Testing Center of Korea Electric Power Corporation, a Korean electric power utility) by installing sensors, collecting data, deducing relationship between acceleration sensor data and tension, and verifying, not in a simulation environment.

Thank you again for your valuable feedback, and if possible, we would appreciate it if you could consider the differences in this study mentioned above in your opinion on the decision to publish this paper.

Author Response File: Author Response.pdf

Reviewer 4 Report

The manuscript  proposes a new method to estimate wire tension. It seems novelty and intresting. However, the wrriting quallity of this manuscript is not so good. Authours should be improved it according to the guide. Secondly, the experiment operation and condition should be decribed in detail.  Otherwise, this article has some linguistic and typesetting errors. Finally，the sentence at line 203 "Authors should discuss the results and how they can be interpreted from the perspective of previous studies and of the working hypotheses. The findings and their implications should be discussed in the broadest context possible. Future research directions may also be highlighted. "  what's matter with you? 

Author Response

[Comment for Reviewer 4]

The manuscript proposes a new method to estimate wire tension. It seems novelty and interesting. However, the writing quality of this manuscript is not so good. Authors should be improved it according to the guide. Secondly, the experiment operation and condition should be described in detail. Otherwise, this article has some linguistic and typesetting errors. Finally, the sentence at line 203 "Authors should discuss the results and how they can be interpreted from the perspective of previous studies and of the working hypotheses. The findings and their implications should be discussed in the broadest context possible. Future research directions may also be highlighted." What's matter with you? 

[Responses]

Thank you for your valuable opinion. The detailed response to your comments are as follows.

Comment 1)

The writing quality of this manuscript is not so good. Authors should be improved it according to the guide.

Response 1)

Thank you for your valuable feedback. As you suggested, we reviewed the paper according to the guide again.

 

Comment 2)

The experiment operation and condition should be described in detail. Otherwise, this article has some linguistic and typesetting errors.

Response 2)

Thank you for your valuable opinion. As you suggested, we described the experimental conditions applied in this study in detail and added them to "3.2 Experimental operation and condition".

 

Comment 3)

The sentence at line 203 "Authors should discuss the results and how they can be interpreted from the perspective of previous studies and of the working hypotheses. The findings and their implications should be discussed in the broadest context possible. Future research directions may also be highlighted."

Response 3)

Thank you for your valuable feedback. We are deeply sorry that we have made such a terrible mistake. We revised the part immediately, and also additional interpretation for the contents has added as below.

“This result implies that there is a high linear correlation between the Y-axis acceleration data and the tension, as expected in this study, and suggests that the tension of the overhead wire can be estimated using the Y-axis acceleration data. More specifically, as already mentioned, the tension of the overhead wire consists of two parts: the load of the overhead wire itself and the force generated by the movement of the overhead wire. Because the Y-axis acceleration data have a high linear correlation with tension, it indicates that the force generated by the load of the overhead wire itself can be ignored. And the overall tension of it can be simply estimated taking into account the force generated by the movement of the overhead wire using the acceleration sensor data.”

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

accept

Reviewer 3 Report

After revision, the authors well addressed the concerns from all the reviewers. So I recommend this paper can be accepted.

Reviewer 4 Report

This manuscript provides an intresting method for tension testing. But, there are always some errors should be improved. For example, the author's affiliation.