iEnergy Pub Date : 2025-06-09 DOI: 10.23919/IEN.2025.0010

Qiufang Zhang;Yin Xu;Jinghan He

{"title":"Facilitating wide-band oscillation analysis in wind farms with a novel linearization analysis framework based on the average-value model","authors":"Qiufang Zhang;Yin Xu;Jinghan He","doi":"10.23919/IEN.2025.0010","DOIUrl":"https://doi.org/10.23919/IEN.2025.0010","url":null,"abstract":"Wide-band oscillations have become a significant issue limiting the development of wind power. Both large-signal and small-signal analyses require extensive model derivation. Moreover, the large number and high order of wind turbines have driven the development of simplified models, whose applicability remains controversial. In this paper, a wide-band oscillation analysis method based on the average-value model (AVM) is proposed for wind farms (WFs). A novel linearization analysis framework is developed, leveraging the continuous-time characteristics of the AVM and MATLAB/Simulink's built-in linearization tools. This significantly reduces modeling complexity and computational costs while maintaining model fidelity. Additionally, an object-based initial value estimation method of state variables is introduced, which, when combined with steady-state point-solving tools, greatly reduces the computational effort required for equilibrium point solving in batch linearization analysis. The proposed method is validated in both doubly fed induction generator (DFIG)-based and permanent magnet synchronous generator (PMSG)-based WFs. Furthermore, a comprehensive analysis is conducted for the first time to examine the impact of the machine-side system on the system stability of the non-fully controlled PMSG-based WF.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"4 2","pages":"132-148"},"PeriodicalIF":0.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11029167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy-efficient and reliable urban rail transit: A new framework incorporating underground energy storage systems 节能可靠的城市轨道交通：结合地下储能系统的新框架

iEnergy Pub Date : 2025-06-03 DOI: 10.23919/IEN.2025.0008

Boyu Qin;Jialing Liu;Hongzhen Wang;Zhaojian Wang;Ziming Xiong;Mingyang Wang;Qihu Qian

引用次数: 0

Estimating the carbon emission reduction potential of using carbon-oriented demand response for data centers: A case study in China 数据中心碳导向需求响应的碳减排潜力评估：以中国为例

iEnergy Pub Date : 2025-03-24 DOI: 10.23919/IEN.2025.0007

Bojun Du;Hongyang Jia;Yaowang Li;Ershun Du;Ning Zhang;Dong Liang

{"title":"Estimating the carbon emission reduction potential of using carbon-oriented demand response for data centers: A case study in China","authors":"Bojun Du;Hongyang Jia;Yaowang Li;Ershun Du;Ning Zhang;Dong Liang","doi":"10.23919/IEN.2025.0007","DOIUrl":"https://doi.org/10.23919/IEN.2025.0007","url":null,"abstract":"The rapid advancement of artificial intelligence (AI) has significantly increased the computational load on data centers. AI-related computational activities consume considerable electricity and result in substantial carbon emissions. To mitigate these emissions, future data centers should be strategically planned and operated to fully utilize renewable energy resources while meeting growing computational demands. This paper aims to investigate how much carbon emission reduction can be achieved by using a carbon-oriented demand response to guide the optimal planning and operation of data centers. A carbon-oriented data center planning model is proposed that considers the carbon-oriented demand response of the AI load. In the planning model, future operation simulations comprehensively coordinate the temporal-spatial flexibility of computational loads and the quality of service (QoS). An empirical study based on the proposed models is conducted on real-world data from China. The results from the empirical analysis show that newly constructed data centers are recommended to be built in Gansu Province, Ningxia Hui Autonomous Region, Sichuan Province, Inner Mongolia Autonomous Region, and Qinghai Province, accounting for 57% of the total national increase in server capacity. 33% of the computational load from Eastern China should be transferred to the West, which could reduce the overall load carbon emissions by 26%.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"4 1","pages":"54-64"},"PeriodicalIF":0.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nodal frequency-constrained energy storage planning via hybrid data-model driven methods 基于混合数据模型驱动方法的节点频率约束储能规划

iEnergy Pub Date : 2025-03-24 DOI: 10.23919/IEN.2025.0005

Jiaxin Wang;Jiawei Zhang;Min Yang;Yating Wang;Ning Zhang

{"title":"Nodal frequency-constrained energy storage planning via hybrid data-model driven methods","authors":"Jiaxin Wang;Jiawei Zhang;Min Yang;Yating Wang;Ning Zhang","doi":"10.23919/IEN.2025.0005","DOIUrl":"https://doi.org/10.23919/IEN.2025.0005","url":null,"abstract":"Cross-regional high voltage direct current (HVDC) systems bring remarkable renewable power injections to the receiver side of power grids. However, HVDC failures result in large disturbances to receivers and cause critical frequency security problems. High renewable energy penetration also reduces the system inertia and damping coefficients. Thus, some nodal frequency nadirs may be much lower than those calculated by the center-of-inertia (COI) and may trigger low-frequency protection. Energy storage is a promising solution for frequency-related problems. In this study, we build an energy storage planning model considering both COI and nodal frequency security constraints. The energy storage capacities and locations are determined in the planning scheme based on year-round operations. First, we carry out a year-round COI-frequency-constrained unit commitment to obtain comprehensive operation modes. Next, we propose a hybrid data-model driven approach to generate nodal frequency security constraints for extensive operation modes effectively. Finally, we achieve optimal energy storage planning with both COI and nodal frequency constraints. Case studies on a modified RTS-79 test system and a 1089-bus power system in practical in Jiangsu, China, verify the effectiveness of the proposed methods.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"4 1","pages":"43-53"},"PeriodicalIF":0.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel carrier interleaved PWM method for four-level nested neutral-point-clamped inverters 一种新的四电平嵌套中性点箝位逆变器载波交错PWM方法

iEnergy Pub Date : 2025-03-24 DOI: 10.23919/IEN.2025.0006

Wei Zhou;Jupeng Pang;Mingzhe Wu;Chao Wang;Kui Wang;Yongdong Li

引用次数: 0

A risk-aware coordinated trading strategy for load aggregators with energy storage systems in the electricity spot market and demand response market 电力现货市场和需求响应市场中具有储能系统的负荷集成商的风险意识协调交易策略

iEnergy Pub Date : 2025-03-19 DOI: 10.23919/IEN.2025.0004

Ziyang Xiang;Chunyi Huang;Kangping Li;Chengmin Wang;Pierluigi Siano

{"title":"A risk-aware coordinated trading strategy for load aggregators with energy storage systems in the electricity spot market and demand response market","authors":"Ziyang Xiang;Chunyi Huang;Kangping Li;Chengmin Wang;Pierluigi Siano","doi":"10.23919/IEN.2025.0004","DOIUrl":"https://doi.org/10.23919/IEN.2025.0004","url":null,"abstract":"The demand response (DR) market, as a vital complement to the electricity spot market, plays a key role in evoking user-side regulation capability to mitigate system-level supply-demand imbalances during extreme events. While the DR market offers the load aggregator (LA) additional profitable opportunities beyond the electricity spot market, it also introduces new trading risks due to the significant uncertainty in users' behaviors. Dispatching energy storage systems (ESSs) is an effective means to enhance the risk management capabilities of LAs; however, coordinating ESS operations with dual-market trading strategies remains an urgent challenge. To this end, this paper proposes a novel systematic risk-aware coordinated trading model for the LA in concurrently participating in the day-ahead electricity spot market and DR market, which incorporates the capacity allocation mechanism of ESS based on market clearing rules to jointly formulate bidding and pricing decisions for the dual market. First, the intrinsic coupling characteristics of the LA participating in the dual market are analyzed, and a joint optimization framework for formulating bidding and pricing strategies that integrates ESS facilities is proposed. Second, an uncertain user response model is developed based on price-response mechanisms, and actual market settlement rules accounting for under- and over-responses are employed to calculate trading revenues, where possible revenue losses are quantified via conditional value at risk. Third, by imposing these terms and the capacity allocation mechanism of ESS, the risk-aware stochastic coordinated trading model of the LA is built, where the bidding and pricing strategies in the dual model that trade off risk and profit are derived. The simulation results of a case study validate the effectiveness of the proposed trading strategy in controlling trading risk and improving the trading income of the LA.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"4 1","pages":"31-42"},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10934762","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Centralized synthetic inertia control of inverter-based thermostatically controlled load clusters for grid frequency regulation 基于逆变器的恒热负荷集群集中综合惯性控制

iEnergy Pub Date : 2025-03-19 DOI: 10.23919/IEN.2025.0003

Te Zhou;Meng Zhou;Shuai Wang;Zhi Li;Yang Han;Tomislav Capuder;Ning Zhang

{"title":"Centralized synthetic inertia control of inverter-based thermostatically controlled load clusters for grid frequency regulation","authors":"Te Zhou;Meng Zhou;Shuai Wang;Zhi Li;Yang Han;Tomislav Capuder;Ning Zhang","doi":"10.23919/IEN.2025.0003","DOIUrl":"https://doi.org/10.23919/IEN.2025.0003","url":null,"abstract":"As the development of new power systems progresses, the inherent inertia of power systems continues to diminish. Centralized frequency regulation, which relies on rapid communication and real-time control, can enable inverter-based thermostatically controlled load (ITCL) clusters to provide virtual inertia support to the power grid. However, ITCL clusters exhibit significant discrete response characteristics, which precludes the direct integration of load-side inertia support into the synchronous unit side. To address this issue, this paper elaborates on the existing technical framework and analyzes the underlying causes of the problem. It proposes a timestamp allocation mechanism for ITCL cluster control instructions, ensuring that many ITCL terminals can be triggered at staggered times, thereby allowing the load cluster power to adhere to the inertia analog control law at any moment. Building on this foundation, the paper further examines the impact of the inertia response delay of ITCL clusters, which is based on centralized frequency regulation, on the stability of the power system. A design scheme for inertia analog control parameters is proposed, taking into account dual constraints, frequency stability and load cluster regulation capacity. Finally, the feasibility and applicability of the proposed mechanism and parameter design scheme are investigated through simulations conducted via MATLAB/Simulink.","PeriodicalId":100648,"journal":{"name":"iEnergy","volume":"4 1","pages":"16-30"},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10934761","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Critical clearing time sensitivity of power systems with high power electronic penetration 大功率电子侵彻电力系统的临界清零时间敏感性

iEnergy Pub Date : 2025-01-29 DOI: 10.23919/IEN.2025.0001

Yuqian Zhang;Feng Liu;Qinglai Guo

引用次数: 0

The rooftop PV revolution 屋顶光伏革命

iEnergy Pub Date : 2025-01-29 DOI: 10.23919/IEN.2025.0002

Antonio Gómez-Expósito

引用次数: 0

Methods of Suppressing Ion Migration in n-i-p Perovskite Solar Cells 抑制n-i-p钙钛矿太阳能电池中离子迁移的方法

iEnergy Pub Date : 2024-12-30 DOI: 10.23919/IEN.2024.0029

Dongmei He;Yue Yu;Xinxing Liu;Xuxia Shai;Jiangzhao Chen

引用次数: 0

iEnergy最新文献