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IEEE Transactions on Power Delivery投稿结果已有9人参与
Dear Authors:
We regret to advise you that the Reviewing Committee is unable to accept the subject paper for publication as a PES Transactions paper even with possible revisions.
Enclosed please find the comments of the reviewers that should serve to explain the recommendation of the reviewing committee. I hope you will find the explanations satisfactory. Although we could not accept this paper, we hope that you will consider Transactions on Power Delivery for other papers in the future.
You are welcomes to provide feedback on your experience of the review process. This can be done through the following website:
http://sites.ieee.org/tpwrd/author-feedback-form/
We thank you for your continued interest in the Power Engineering Society.
Sincerely yours,
Prof. Wilsun Xu
Editor-in-Chief, Transactions on Power Delivery
COMMENTS TO THE AUTHORS:
Editor-in-Chief's Comments:
Editor
Editor Comments for Author:
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Reviewers' Comments:
Reviewer: 1
Comments to the Author
The interrupting ability of circuit breakers is an interesting topic. The authors are focused on "out of step fault" conditions in UHV lines.
Generally, there are a lot of interesting things in this work, but the paper should be well re-organized. Firstly the language should be significantly improved and the quality of figures as well.
In the abstract in line 20, it is not clear what the authors mean with "reducing severity of the CBs". This should be clearly explained maybe in the introduction.
In page 1, line 9, right column, it is recommended to use "out step protection is applied"
Introduction part in general is incomplete and very short. At the end, a paragraph should be added describing what the goal of this paper will be and what methodology and solutions the authors propose.
The authors mention "out of phase fault analysis". It is not clear what the authors mean with this term? Is there a disconnection of the CBs during a fault in the network associated with an out of step condition, or from some reason phase angle difference of between remote line angles is kept 45, 90, 180 degrees etc?
Fig.2 shows presence of high amount of ripples in the overvoltages similar to those when short line faults are disconnected. however, there is no disconnection of a fault. Is this because the transmission solution is an overhead line. In figure 5 we see this for some parameters as well but it is very difficult to indentify what is what. please comment the ripples, is that because of low capacitance or low losses and improve figure 5.
how is equation (2) derived? Equation (3) may not be needed because it is Iopm/sqrt(2).
There are some equations on page 3. is ls the same as Ls; and l0 is the same as L0? please be consistent with the formulaes. In eq. 9 the variable "s" occurs for the first time I gues, but it is not mention what this variable means.
how do you get equation (12)? please explain either in the text or all formulaes should be explained in an appendix.
figure 6. how are the simulations performed? Please explain the manuver that is made in figure 1 which possibly results in the solution in figure 6? please use "computed" instead of "calculated".
Figure 4. should be imporved. it seems that lower capacitances result in higher RRRV. However, lower capacitance means shorter lines. Is it possible for shorter lines to have such a high deviation of out of step angles ?
what is the MCOV of the MOA?
Page 6. second column, line 42. first sentence is not clear. "the cure of max overvoltage level... ". what is the meaning? please rewrite it.
figure 14 shows, "max overvoltage level vs postion of transmission line". what the position of transmission line means ? do you maybe mean, specific location along the line.
in the first paragrpah of chapter iV "Fig .15" should be "Fig. 15". Please also pay attention and correct the text in the whole paper. there are here and there similar mistakes.
Reviewer: 2
Comments to the Author
The paper deals with an important issue for UHV systems. It calculates and compares different conditions and tries to come to a conclusion regarding the severity for circuit breaker stress.
The English language could be impoved for better readability
Page 1 Line 22: I think the commonly used term is “ not permanent” instead of transient
Page 2 line 8 more severe may be more appropriate than brutal
Page 2 line 42 why is the generator cb standard refered here? Out of phase condition for generator circuit breaker is a different issue than for UHV. It would be more appropriate to make reference to IEC 62271-306 which gives a lot of backgroundinformation how the standard was created in relation to the network conditions
Page 3:It seems that the text flow is somehow mixed after line 2 11 it continues with line 1 to 11 in the sec row follow than by line 48 in the first row
Page 3 fig 4: Either some system parameters like power, length of the line etc. could be added or the result should be expressed in relative terms
Page 4 figure 6: for better understanding the X axe should show the value 0 at current zero. The absolute value as shown here is not interesting. Furthermore it may be helpful to include a graphical comparison of the standard TRV waveshape and the calculated one. This may increase the understanding.
Page 5 figures 8 -12 same comment as for figure 4. please add either system parameters or make the values relative. In addition it may be somehow helpful to add the correspong values from the standard
Page 6 line 18: The sentence: due to the oppnening time…. is not understood. Is the intention here to say something about delayed current zero’s? This would be the first time in this doc.
Page 7 Table II: Is this table talking about overvoltage leves somewhere at the line, or TRV values at the circuit breaker. I assume it is TRV values at the circuit breaker. if so it should made clear. some for table III
Reviewer: 3
Comments to the Author
This paper discussed an important and interesting topic in UHV power system, which is how system parameters influence the out-of-phase faults interruption conditions for circuit breakers. However, the paper is ill-written. This paper’s goal, ideas or technical contents are very difficult to understand due to confusing organization of the materials and unfit use of English language. The paper is suggested a re-organization. An English polishing service is benificial.
Reviewer: 4
Comments to the Author
The authors apply oversimplified models with irrealistic parameters to an interesting topic. From the beginning of the paper many questions rise, like: why are shunt reactors and series capacitors in operation at the same moment, why is the single circuit OH-line that consists of two sections treated as one 650 km long line, why isn't it mentioned that at both line ends large 1000/500 kV transformers are installed, why is the surge caoacitance of the shunt reactors not taken into account but in stead the (unrealistic large) capacitance to ground of the series capacitor platforms, how are the travelling waves implemented in the model of Fig. 1, where are the negative reflections of the travelling waves coming from, both CBs do not interrupt at exactly the same moment, the initial part of the TRV for out-of-phase is covered by T30, etc. The draft paper doesn't reflect much practical experience in the field of circuit breakers and switching transients. At least reference had to be made to Prof. Jiming Lin's "A Study on Transient Recovery Voltage of UHV circuit breakers", Conference of UHV Transmission Technology, Beijing 2006.
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