Voltage Control Strategy for Low-Voltage Distribution Network with Distributed Energy Storage Participating in Regulation under Low-Carbon Background

Round 1

Reviewer 1 Report

1. The main question addressed by the research is what kind of voltage control strategy establish to solve the voltage deviation problems with a high proportion of PV.

2. The topic is relevant to the field of electrical power engineering. It addresses a specific problem in voltage control of the low voltage distribution network with photovoltaic power generation.

3. Compared with other published materials this paper proposes a voltage control strategy based on sensitivity analysis.

4.

L87 Why is the limit for safe photovoltaic ratio set on 40%?

L121 Why do you consider the value of the node voltage 0.38kV and in Figure 3. voltage 0.4kV?

L239-240 What do you mean by “residents' electricity consumption time is mainly concentrated from 6:00 to 11:00 and from 6:00 to 23:00.”?

Do you into considerations power loss of battery storage? How it influence Tab. 3?

Did you try your methodology also in real network?

5. The conclusions are consistent with the evidence presented and they address the main question.

6. References are appropriate.

7. Additional comments on the tables and figures:

Figure 4．x-axis

-          Is there any reason to use these strange time with minutes (used also in other figures)?

-          Units “t” should be “h”.

8. Additional formal comments:

L213 Unit of capacity of the energy storage battery is not kW but kWh

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

In this paper, a voltage control strategy is established to solve the voltage deviation problem, and the effectiveness of the proposed method is verified by the LVDN of high ratio PV. Using the distributed energy storage distribution model, the voltage crossing limit caused by load imbalance is effectively controlled by regulating the injected power of distributed energy storage. The voltage deviation caused by the high proportion of PV connected to the LVDN is effectively controlled by introducing sensitivity analysis for the voltage control strategy. There are good application prospects, but the followings issues are present:

1. The definition of  Clustering in part 3.1(d) is too brief and needs further explanation.

2.  Some symbols in equations (10) and (11) are not explained.

3.  The current flow chart in figure1 is too general to convey the distributed energy storage configuration work mentioned in the previous section.

4.  The work on distributed energy storage configuration in this paper is only briefly presented and needs more detailed information about this core research object.

 

5.  The Readability of Figure 5 is not good, it’s difficult to distinguish results between before and after adopting the proposed control strategy.

6.  There is a "/" symbol in the legends of Figure 6 and Figure 8, and the size of the legends in Figure 7 and 8 is problematic and needs to be checked.

7.  The example in this paper only considers the case of 100% PV access ratio, can the method of this paper be applied when the access ratio changes? It can be further explained to reflect the adaptability of the method in this paper.

8.  In line 302, "sky source load" appears, what does it mean? It is not mentioned in the previous page and it's not a widely known term either. English diction and grammar need to be improved.

 

 

The author's English level is fair, and the whole text is clear to read, but there are some wording and grammatical errors, and the sentences are slightly abbreviated, so the language expression needs to be further optimized during the revision.

Author Response

Please see the attachment

Author Response File: Author Response.pdf