Mehdi Veisi, Daniel Sahebi, Mazaher Karimi, Farhad Shahnia
{"title":"Optimised Allocation of Distributed Generation and Electric Vehicles Integration in Microgrids: A Multi-Criteria Approach","authors":"Mehdi Veisi, Daniel Sahebi, Mazaher Karimi, Farhad Shahnia","doi":"10.1049/rpg2.70042","DOIUrl":"https://doi.org/10.1049/rpg2.70042","url":null,"abstract":"<p>This paper presents the allocation and planning of renewable distributed generations such as wind turbines and photovoltaic systems, and non-renewable generators such as fuel cells in the microgrids that incorporate electric vehicle parking lots while considering financial, operational and voltage stability goals. The proposal is modelled in the form of a bi-objective optimisation problem. One of the objective functions minimises the distributed generators’ planning cost and the microgrid's operational cost, while the other function maximises the microgrid's voltage stability index. The optimisation problem is solved, satisfying technical constraints of power flow, network operational, and voltage stability limits while incorporating the models of the electric vehicles parking lots and distributed resources. The ε-constraint-based Pareto optimisation solution is used to determine a single-objective formulation in the next step. Then, a fuzzy decision-making tool derives a compromise solution. Finally, the Crow Search algorithm finds a trustable optimal solution to the problem. The performance of the proposal is validated on a standard microgrid network using numerical analyses and shows that the proposal can effectively determine the optimal economic conditions.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuemei Zheng, Zongxuan Liu, Xingyu Zhang, Josep M. Guerrero
{"title":"Robust Control for PV and Battery DC Microgrid System Based on Passive and Sliding Mode","authors":"Xuemei Zheng, Zongxuan Liu, Xingyu Zhang, Josep M. Guerrero","doi":"10.1049/rpg2.70033","DOIUrl":"https://doi.org/10.1049/rpg2.70033","url":null,"abstract":"<p>For the photovoltaic (PV) combined battery energy storage systems (BESSs) system, the paper proposed a nonlinear full-order terminal sliding mode (FOTSM) combined with the passive based control (PBC) method. In the PV-BESS DC microgrid system, an Euler-Lagrange (EL) model of the DC-DC bidirectional converter is established first and PBC control is adopted for it. Then adopted FOTSM control laws for the outer-loop instead of traditional PI control. The simulation carried out case studies of changing in light intensity, temperature and load. For the light intensity changed case, compared simulation results depicted that DC-bus voltage can be stabilised within 0.1s under the proposed control, while proportional integral (PI) control cannot meet the control requirements. For the light intensity, temperature and load changed together case, the DC-bus voltage can converge to the given voltage within 0.05 s under FOTSMC-PBC control, with a steady-state fluctuation range of ± 1.5 V. For the BESS, the longest stability recovery time of the current is only 0.073 s, with the fluctuation range of 0.067%. Simulations and experiments have all verified that the proposed method is effective under the different work conditions.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Han Yuan, Delin Wang, Xin Zhou, Jun Wang, Muhammad Shahid Mastoi
{"title":"Internal Voltage Frequency Response Model of Grid-Forming DFIG-Based Wind Turbine and Its Characteristics","authors":"Han Yuan, Delin Wang, Xin Zhou, Jun Wang, Muhammad Shahid Mastoi","doi":"10.1049/rpg2.70040","DOIUrl":"https://doi.org/10.1049/rpg2.70040","url":null,"abstract":"<p>The system frequency response (SFR) of doubly-fed induction generator (DFIG) is different from synchronous generator (SG). A grid-forming DFIG via virtual synchronous control of inner voltage vector is proposed to mimic the characteristics of SFR of SG, which leads to an internal voltage SFR model with virtual incremental mechanical power model similar to SG. For clearly demonstrating the inertial dynamics of grid-forming DFIG, the expression of the inertial dynamics in the time domain is firstly derived by convolution, which has same inertial dynamics with SG at the beginning of disturbance. Moreover, the inertia difference between DFIG via synthetic inertia control and grid-forming DFIG is analysed, and the fast power response capability of grid-forming DFIG is demonstrated by comparison with synthetic inertia control. Furthermore, a multi-machine SFR model is established by the proposed SFR model to analyse the impacts of different control parameters on the system frequency dynamics, which is convenient to coordinate with load disturbance. Finally, numerical simulations are conducted to show the effectiveness and accurateness of the proposed SFR model.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Fast-Fixing Method for Stochastic Unit Commitment: A Trade-Off Analysis Between Accuracy and Efficiency","authors":"Ran Li, Lei Zhang, Junyi Tao","doi":"10.1049/rpg2.70036","DOIUrl":"https://doi.org/10.1049/rpg2.70036","url":null,"abstract":"<p>Stochastic unit commitment (SUC) addresses the uncertainties associated with renewable energy resources by generating various scenarios, which challenges the solution efficiency due to the vast number of variables and constraints involved. Existing methods apply machine learning techniques to accelerate the process by directly predicting generator outputs. However, machine learning may not deliver feasible solutions that meet all the constraints. This paper proposes a fast-fixing method (FFM) that predicts the probability distribution of unit statuses instead of directly predicting the dispatch decisions. With units on/off statuses partly prefixed, the original large-scale mixed-integer linear programming (MILP) problem will be simplified. The number of prefixed units can be adjusted by a threshold predicting acceptance (PA), providing a flexible choice for users to balance the trade-off between efficiency and accuracy. According to the case study on RTS-96 involving 15 to 30 generator units and 20 scenarios, when setting PA to 0.1, the proposed FFM significantly decreases the average solving time by 45.28% compared to CPLEX, 28.6% compared to Gurobi, and 21.43% compared to Benders decomposition, while only sacrificing a uniform 0.34% in average accuracy across all comparisons.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Youzhuo Zheng, Xiaobing Xiao, Yongxiang Cai, Zhenghao Gao, Yuanhong Ye, Hongwei Li, Zhufeng Wang
{"title":"Research Progress and Development Trends of Building Energy Conservation Based on Bibliometric Analysis","authors":"Youzhuo Zheng, Xiaobing Xiao, Yongxiang Cai, Zhenghao Gao, Yuanhong Ye, Hongwei Li, Zhufeng Wang","doi":"10.1049/rpg2.70035","DOIUrl":"https://doi.org/10.1049/rpg2.70035","url":null,"abstract":"<p>In order to mitigate the negative impact of increasing energy demand for buildings, a series of measures are taken to improve the energy efficiency in the built environment. Previous studies have found that household appliances, hot water supply and space heating in buildings account for a large proportion of energy consumption, where heating, ventilation, and air conditioning (HVAC) contribute about 40% of the energy consumption as well as a large amount of greenhouse gas emissions. Energy saving while maintaining occupant comfort, therefore attract tremendous interest in the field where HVAC energy reduction or efficiency improvement are the key issues. By employing data mining and visualization technologies, this paper has reviewed highly crucial work in building energy systems with an attempt to explore the key researches as well as the future development trend. On the platform of CiteSpace with Web of Science (WOS) database, the key findings in line with building energy conservation technologies are collected. An innovative bibliometric method is used to map the knowledge in a visualizing way where research directions and cutting-edge technologies are discovered. This article also discusses the relationship between energy system development and national energy conservation policies with a specific focus on China's photovoltaic policies.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Grid Partition Planning Method of AC–DC Interconnected Main Grid for Large-Scale Renewable Energy Integration","authors":"Xun Lu, Xianfu Gong, Peng Wang","doi":"10.1049/rpg2.70023","DOIUrl":"https://doi.org/10.1049/rpg2.70023","url":null,"abstract":"<p>Amid the goals of carbon peaking and carbon neutrality, the unpredictability and fluctuations associated with integrating large-scale renewable energy pose substantial challenges to the new electric power system. This situation calls for robust grid partition planning methods to maintain the power grid's safety and stability. This paper addresses the problem of 500 kV main grid partition planning by proposing a partition method based on complex network theory and an improved multi-objective cuckoo search optimisation (MOCSO) algorithm to achieve grid optimal partition and the generation of key channel set. First, a comprehensive reliability indicator system is constructed to comprehensively assess and optimise the reliability of AC–DC hybrid grid based on spatial and temporal distribution characteristics. Second, a grid partition planning method based on the information gap decision theory (IGDT) and MOCSO algorithm is proposed. It can quickly find the global or near-optimal solution, adapt to the change of system demand and take into account various practical constraints. Finally, taking a 500-kV grid in a province of China as an example, the effectiveness of the proposed method is verified through simulation analysis. Results show that this method significantly reduces short-circuit current, enhances system stability and provides technical support and feasible partition scheme for scientific planning and safe operation of the grid. The proposed method has high practical value and promotion significance as it achieves an efficient balance between short-circuit current control and system stability while taking into account both economy and reliability.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental-Numerical Investigation of the Photovoltaic Thermal System with Polypropylene Heat Exchanger: Case in Morocco","authors":"Yassine El Alami, Elhadi Baghaz, Rachid Bendaoud, Fatima Chanaa, Mohammadi Benhmida, Hassan Ezzaki, Rehena Nasrin","doi":"10.1049/rpg2.70041","DOIUrl":"https://doi.org/10.1049/rpg2.70041","url":null,"abstract":"<p>This study uses experimental and numerical methods to evaluate a hybrid photovoltaic-thermal system (PVT-S) against a traditional photovoltaic panel (PV-P) in El Jadida, Morocco. A polypropylene heat exchanger covering 70% of the PV-P surface is analyzed for its impact on thermal distribution and performance. The effects of water mass flow rate (FRT) and solar irradiance on cell temperature, electrical power, thermal energy, and efficiencies are examined. Simulations were performed using the finite element method for water FRT of 60, 90, 120, and 180 L/h. Experimental tests validated the numerical results, showing strong agreement and confirming the analyses' reliability. The results reveal a maximum power difference of 30.42 W between the PVT-S and PV-P at 120 L/h FRT. Thermal and electrical efficiencies and system power increase with higher flow rates, greater solar irradiation, and a smaller inlet-outlet temperature difference. A higher FRT results in a lower cell temperature. The average thermal efficiency of the PVT system, between 32.99% and 51.15%, is lower than literature values due to imperfect thermal contact between the polypropylene heat exchanger and the PV-P, along with a limited irrigated surface area of 70%. Partial cooling leads to uneven thermal distribution, reducing performance and shortening solar cell lifespan.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Multi-Stage NSGA-III Optimization Model for False Data Injection Attacks in Integrated Power-Hydrogen Cyber-Physical Systems","authors":"Dong Hua, Haomin Huang, Peifeng Yan, Suisheng Liu, Qinglin Lin, Qian Li","doi":"10.1049/rpg2.70022","DOIUrl":"https://doi.org/10.1049/rpg2.70022","url":null,"abstract":"<p>The growing integration of renewable energy sources and hydrogen technologies into the power grid has introduced significant cyber-physical vulnerabilities, particularly to false data injection attacks (FDIA). This paper presents a novel three-stage FDIA optimization model targeting integrated power-hydrogen systems. The model leverages the interdependencies between power grids and hydrogen infrastructures, aiming to maximize system disruption while minimizing detection likelihood. Using a multi-objective optimization framework based on the non-dominated sorting genetic algorithm III (NSGA-III), the model identifies Pareto-optimal attack strategies by balancing conflicting objectives. The case study uses synthesized data to represent realistic conditions in the IEEE 118-bus system, incorporating hydrogen storage facilities and production infrastructure. Simulations demonstrate how coordinated attacks can exacerbate imbalances in power load and hydrogen storage, resulting in cascading failures across both systems. The results show that the power system's recovery time increases exponentially with the attack intensity, while the hydrogen system suffers from slower, more complex recovery dynamics. This work highlights the critical need for advanced cybersecurity frameworks to protect integrated power-hydrogen infrastructures from sophisticated cyber-physical threats, emphasizing the importance of monitoring and securing multiple layers of the system.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Harmonic Mitigation in Power Systems With High Wind Sources Penetration by Placing Passive Filters Considering Resonance Issues: A Case Study of the Sistan Power Grid","authors":"Saeid Setamkesh, Ali Karimi, Mohsen Rahimi","doi":"10.1049/rpg2.70031","DOIUrl":"https://doi.org/10.1049/rpg2.70031","url":null,"abstract":"<p>The harmonic challenge is high in power systems where many wind farms (WFs) are installed due to using power electronic devices. This paper proposes a multi-objective framework with minimising THD index and cost function for reducing harmonics in the presence of several WFs to determine the type, number, location, size, and tuning frequency of passive filters considering resonance issues. Much previous research has focused on local harmonic reduction in a WF, and less attention has been paid to a region with multiple WFs. The Milnader region of the Sistan power grid in Iran has been selected to implement the proposed framework. As Iran's wind energy hub, planning studies for constructing several WFs are underway in this region. Due to many decision variables of the problem, the NSGA-II algorithm is implemented in MATLAB. Still, the normal and harmonic load flow analysis and frequency scanning are performed in the DIgSILENT. The simulation results are evaluated as a set of Pareto front solutions from different aspects, and finally, among the 4 selected optimal solutions, Solution #4 is chosen considering the resonance considerations, which in most of the buses in the region, THD reaches below 1%.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"RETRACTION: Investigation and 3E (Economic, Environmental and Energy) Analysis of a Combined Heat and Power System Based on Renewable Energies for Supply Energy of Sport Facilities","authors":"","doi":"10.1049/rpg2.70037","DOIUrl":"https://doi.org/10.1049/rpg2.70037","url":null,"abstract":"<p><b>RETRACTION</b>: J. Fei, Z. Su, Y. Yao, C. Fei, and A. Shamel: Investigation and 3E (economic, environmental and energy) analysis of a combined heat and power system based on renewable energies for supply energy of sport facilities. <i>IET Renewable Power Generation</i> 00, 1–15 (2023). https://doi.org/10.1049/rpg2.12777</p><p>The above article, published online on 8th June 2023 in Wiley Online Library (wileyonlinelibrary.com) has been retracted by agreement between the journal's Editor-in-Chief, David Infield; the Institution of Engineering and Technology; and John Wiley & Sons Ltd.</p><p>This article was published as part of a guest-edited special issue. The retraction has been agreed upon following an investigation by the IET, John Wiley & Sons Ltd, and the journal, who have determined, that the article was not reviewed in line with the journal's peer review standards and there is evidence that the peer review of the paper was manipulated. Accordingly, we cannot vouch for the integrity or reliability of the content and have taken the decision to retract the article. The authors have been informed of the decision and Zhanguo Su disagreed with the retraction.</p>","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.70037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}