A Joint Electricity Market-Clearing Mechanism for Flexible Ramping Products with a Convex Spot Market Model
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsThis paper seems to have gone through the first round of review and has been revised. I think this version is close to being publishable. The only suggestion is to place NOMENCLATURE at the beginning of the paper to provide readers with a more intuitive understanding of the meaning of each symbol.
Comments on the Quality of English Language
Minor editing of English language required
Author Response
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Reviewer 2 Report
Comments and Suggestions for AuthorsPeer Review
The article in the journal of "Sustainability" titled "A Joint Electricity Market Clearing Mechanism for Flexible Ramping Products with Convex Spot Market Model" proposes a Flexible Ramping Products (FRP) and convex electricity markets joint clearing (FCESMJC) market mechanism in the context of high renewable energy integration, aiming to address the problem of severe price fluctuations in traditional spot markets and high response costs of traditional flexibility services due to the variability and uncertainty of net load in power systems.
At the level of electricity energy market, considering nonlinear costs and network characteristics, a convex electricity spot market (CESM) model is constructed based on second-order cone programming relaxations optimal power flow (SOCP-OPF) and conic economics theory. At the level of auxiliary services market, a FRP opportunity loss pricing (FOLP) method is proposed by adding pricing capacity boundary constraints based on the ramping characteristics of FRP. Through the locational marginal price (LMP), a joint market is formed with the aim of minimizing the associated costs of both markets and unexpected costs due to load curtailment and power surplus. The market clearing price and the output of dispatchable generator (DPG) are solved.
This article is closely related to the field of electricity market, and the topic selection has certain practical significance. The structure of the paper is clear and the literature review is comprehensive, but the following problems still exist:
1.As for the convex electricity spot market (CESM) model, the second-order cone programming relaxations optimal power flow (SOCP-OPF) method adopted does not consider the phase angle constraint conditions. Please provide the relevant proof that the phase angles of each node in section 4.2 "Numerical Experiments" are within the range of safety constraints.
2.Please indicate the optimal power flow calculation method used in section 4.1 "Assumptions", test cases 1) and 2), DC-OPF or SOCP-OPF?
3.Does the conclusion analysis in section 4.2 "Numerical Experiments" correspond to the 5 test cases in section 4.1 "Assumptions"?
4.There are some editorial issues, for example, "Figures 15 and 16" and "Due to the absence of FRP, DPG 3 is not turned on at t=6 in the FCESMJC model" in the third paragraph in section 4.2.3 "Markets economics analysis".
Author Response
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Reviewer 3 Report
Comments and Suggestions for AuthorsThe topic is current and relevant, the authors propose a market mechanism for joint clearing of convex electricity spot markets and FRP (FCESMJC).
Regarding the presentation of the text, I suggest updating the template used for the 2023 model, to include all objects/elements (for example, the table with citation and copyright data) of the journal.
In lines between 116 and 119, replace the Roman numerals with Arabic ones, that is, use Section 2 and not Section II.
The authors presented a good bibliographic review. The methodology is consistent, and the results coherent.
Author Response
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Reviewer 4 Report
Comments and Suggestions for AuthorsThe manuscript presents an interesting topic on a novel FRP pricing method has been proposed to compensate FRP market participants for their FRP costs more reasonably.
A few comments and questions are due before we proceed with this submission:
1-what's the impact of Accurate price signals on market participants decision in fig. 7?
2-table 3 and 4: why at low load states, the LMP at the bus is smaller?
3-in the introduction, the citation is essential to: https://doi.org/10.1142/S0217984923501828
4 What's the impact of DPG's participation in the FRP markets in the FRP markets without FOLP? clarify by looking at fig. 9 and 10 and correlating these.
When the authors take my comments in reply to my questions above and revise the manuscript accordingly, I can reconsider my decision. do not skip any comments above.
Author Response
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Round 2
Reviewer 2 Report
Comments and Suggestions for AuthorsAfter review, the author has made specific and detailed revisions based on peer review comments.
