A Method to Improve Both Frequency Stability and Transient Stability of Virtual Synchronous Generators during Grid Faults

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

1. How the author determine the optimal damping ratio?

2. What's the computation efforts to get the control parameters? Is it applicable for offline or online?

3. When the system operating condition changes, does the parameters need to tuned as well?

Comments on the Quality of English Language

Some grammar mistakes needs to be corrected.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

Here are my review comments for the paper entitled ''A method to improve both frequency stability and transient stability of VSG during grid faults'' submitted to Sustainability journal :

 

There are several areas that the authors should address:

 

I. The literature review is insufficient. The authors should explore and incorporate relevant papers in the field into their references.

 

II. It is recommended to create a table that outlines existing transient stability algorithms for virtual synchronous generators, conducting a comprehensive comparison considering aspects such as total cost, complexity, efficiency, and implementation feasibility.

 

III. Including figures derived from the aforementioned table could enhance reader comprehension.

 

IV. An efficiency analysis of the grid system under the proposed algorithm should be conducted.

 

V. Given the use of a converter in the system (as shown in Figure 1), a brief literature review on grid-connected inverter topologies would be beneficial. This review can be integrated into the introduction or placed below Figure 1. Relevant sources that should be considered for this review include https://www.sciencedirect.com/science/article/abs/pii/S0360319923054988 and https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.2844.

 

VI. It is advisable to include an image of the implemented system for clarity.

Comments on the Quality of English Language

Here are my review comments for the paper entitled ''A method to improve both frequency stability and transient stability of VSG during grid faults'' submitted to Sustainability journal :

 

There are several areas that the authors should address:

 

I. The literature review is insufficient. The authors should explore and incorporate relevant papers in the field into their references.

 

II. It is recommended to create a table that outlines existing transient stability algorithms for virtual synchronous generators, conducting a comprehensive comparison considering aspects such as total cost, complexity, efficiency, and implementation feasibility.

 

III. Including figures derived from the aforementioned table could enhance reader comprehension.

 

IV. An efficiency analysis of the grid system under the proposed algorithm should be conducted.

 

V. Given the use of a converter in the system (as shown in Figure 1), a brief literature review on grid-connected inverter topologies would be beneficial. This review can be integrated into the introduction or placed below Figure 1. Relevant sources that should be considered for this review include https://www.sciencedirect.com/science/article/abs/pii/S0360319923054988 and https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.2844.

 

VI. It is advisable to include an image of the implemented system for clarity.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

1.     How does the work contribute to the understanding of the influence of inertia and damping on transient stability and frequency stability under different fault scenarios?

 

2.     What insights are gained regarding the trade-offs between high inertia and transient stability under specific fault conditions?

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

Comments and Suggestions for Authors

The majority of the feedback I provided in my review has been adequately addressed. This paper is now ready for publication.