IET Energy Systems Integration最新文献_第8页

Influence mechanism and virtual power system stabiliser method of virtual synchronous generator for low-frequency oscillation of power system 虚拟同步发电机对电力系统低频振荡的影响机制和虚拟电力系统稳定器方法

IF 2.4

IET Energy Systems Integration Pub Date : 2023-10-13 DOI: 10.1049/esi2.12119

Haixin Wang, Yan Hao, Haiwen He, Henan Dong, Shengyang Lu, Guanfeng Zhang, Junyou Yang, Zhe Chen

引用次数: 0

Data-driven power system dynamic security assessment under adversarial attacks: Risk warning based interpretation analysis and mitigation 对抗性攻击下数据驱动的电力系统动态安全评估：基于风险预警的解释分析与缓解

IF 2.4

IET Energy Systems Integration Pub Date : 2023-10-07 DOI: 10.1049/esi2.12118

Zhebin Chen, Chao Ren, Yan Xu, Zhao Yang Dong, Qiaoqiao Li

{"title":"Data-driven power system dynamic security assessment under adversarial attacks: Risk warning based interpretation analysis and mitigation","authors":"Zhebin Chen, Chao Ren, Yan Xu, Zhao Yang Dong, Qiaoqiao Li","doi":"10.1049/esi2.12118","DOIUrl":"10.1049/esi2.12118","url":null,"abstract":"Power system dynamic security assessment (DSA) has long been essential for protecting the system from the risk of cascading failures and wide-spread blackouts. The machine learning (ML) based data-driven strategy is promising due to its real-time computation speed and knowledge discovery capacity. However, ML algorithms are found to be vulnerable against well-designed malicious input samples that can lead to wrong outputs. Adversarial attacks are implemented to measure the vulnerability of the trained ML models. Specifically, the targets of attacks are identified by interpretation analysis that the data features with large SHAP values will be assigned with perturbations. The proposed method has the superiority that an instance-based DSA method is established with interpretation of the ML models, where effective adversarial attacks and its mitigation countermeasure are developed by assigning the perturbations on features with high importance. Later, these generated adversarial examples are employed for adversarial training and mitigation. The simulation results present that the model accuracy and robustness vary with the quantity of adversarial examples used, and there is not necessarily a trade-off between these two indicators. Furthermore, the rate of successful attacks increases when a greater bound of perturbations is permitted. By this method, the correlation between model accuracy and robustness can be clearly stated, which will provide considerable assistance in decision making.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"6 1","pages":"62-72"},"PeriodicalIF":2.4,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135254617","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 optimally tuned super twisting sliding mode controller for active and reactive power control in grid-interfaced photovoltaic system 用于并网光伏系统有功和无功功率控制的新型优化调整超扭曲滑动模式控制器

IF 2.4

IET Energy Systems Integration Pub Date : 2023-09-18 DOI: 10.1049/esi2.12117

Bhabasis Mohapatra, Binod Kumar Sahu, Swagat Pati

{"title":"A novel optimally tuned super twisting sliding mode controller for active and reactive power control in grid-interfaced photovoltaic system","authors":"Bhabasis Mohapatra, Binod Kumar Sahu, Swagat Pati","doi":"10.1049/esi2.12117","DOIUrl":"10.1049/esi2.12117","url":null,"abstract":"In photovoltaic (PV) systems, inverters play a crucial role for supplying electricity to meet the demand while maintaining power quality. For a local load connected to a grid-interfaced photovoltaic (GIPV) system, active and reactive power control is necessary at the distribution level. Thus, the foremost purpose of this article is to get the best optimally designed robust controller for control of active and reactive power. A GIPV system with Improved Arithmetic Optimisation Algorithm (IAOA)-based Super Twisting Sliding Mode Controller (ST-SMC) methodology has been proposed in this article for active and reactive power management. The conventional PI controller in the GIPV system that is most frequently used has considerable undershoot and a long settling period. PI controller tuning parameters were also changed to account for the wide change in the reference pattern. Therefore, STSMC and SMC are used for ensuring robustness against external disturbances. The conventional SMC comes out to have a chattering issue. Furthermore, the proposed IAOA technique is validated through some benchmark functions. The proposed IAOA technique outperforms Particle Swarm Optimisation (PSO), Forensic Based Investigation (FBI), and Traditional Arithmetic Optimisation Algorithm (TAOA) in terms of the number of iterations and accurately achieving optimal solutions for active and reactive power control. The results show that the proposed IAOA-based STSMC technique has an improved performance of settling time and undershoot for active and reactive power control. This article also presents stability analysis and robustness test of the above mentioned controllers to illustrate the effectiveness of each optimally designed controller. A 40 kW GIPV system performance is evaluated using the MATLAB environment, and the results are validated in a real-time simulator platform OPAL-RT 4510.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"5 4","pages":"491-511"},"PeriodicalIF":2.4,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135207661","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

An accelerated primal-dual method for semi-definite programming relaxation of optimal power flow 优化功率流半有限编程松弛的加速原始二元方法

IF 2.4

IET Energy Systems Integration Pub Date : 2023-09-08 DOI: 10.1049/esi2.12115

Zhan Shi, Xinying Wang, Dong Yan, Sheng Chen, Zhenwei Lin, Jingfan Xia, Qi Deng

引用次数: 0

Electric vehicle dispatching strategy considering time cost and risk of operating distribution network 考虑配电网运行时间成本和风险的电动汽车调度策略

IF 2.4

IET Energy Systems Integration Pub Date : 2023-09-02 DOI: 10.1049/esi2.12116

He Wang, Xianda Leng, Zhifeng Liang, Xuesong Huo, Ruoying Yu, Jing Bian

{"title":"Electric vehicle dispatching strategy considering time cost and risk of operating distribution network","authors":"He Wang, Xianda Leng, Zhifeng Liang, Xuesong Huo, Ruoying Yu, Jing Bian","doi":"10.1049/esi2.12116","DOIUrl":"10.1049/esi2.12116","url":null,"abstract":"Electric vehicles (EVs) are increasingly being valued by countries, but the disorderly charging behaviour of too many EVs poses a huge challenge to the operation of the power grid. First, for EVs, a methodical charging and discharging technique was designed, taking into account the temporal and spatiotemporal characteristics of different EV models, time convenience of owners, and safe operation of power grid. Second, the EV characteristics and safe operation of the grid after EV integration into the grid are presented for vehicle owners to achieve minimal charging station and optimal charging stations selection as well as charging and discharging schemes. Third, simulation calculations and analyses of ordered charging and discharging modes as well as disordered charging modes under various scenarios were performed. This study fully considers the characteristics of different vehicle models and the willingness of users to respond, making the model more realistic. The findings demonstrate that the optimised charging and discharging strategy in this study lowers the cost of charging for vehicle owners, boosts revenue from the charging station and the rate of use of the charging pile, lowers the risk of the safe operation of distribution networks, and effectively relieves pressure on the power grid. While solving the scheduling difficulties of a large number of EVs, it increases the economy between users and the power grid, and improves the safety of power grid operation.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"5 4","pages":"444-461"},"PeriodicalIF":2.4,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46396027","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

Robust optimisation of electricity-heating integrated energy system based on data-driven PV interval estimation 基于数据驱动PV区间估计的电热一体化能源系统鲁棒优化

IF 2.4

IET Energy Systems Integration Pub Date : 2023-08-29 DOI: 10.1049/esi2.12114

Tao Xu, Zuozheng Liu, Lingxu Guo, He Meng, Rujing Wang, Mengchao Li, Shuqi Cai

{"title":"Robust optimisation of electricity-heating integrated energy system based on data-driven PV interval estimation","authors":"Tao Xu, Zuozheng Liu, Lingxu Guo, He Meng, Rujing Wang, Mengchao Li, Shuqi Cai","doi":"10.1049/esi2.12114","DOIUrl":"10.1049/esi2.12114","url":null,"abstract":"Short-term interval estimation can effectively and precisely quantify the uncertainties of renewable energy, accurately represent the range of fluctuations of uncertain variables in robust optimisation of electricity-heating integrated energy system (EHIES) and it is getting crucial for reliable and flexible operation of renewable dominated new energy systems. The authors present a multivariate data-driven short-term PV power interval prediction model that consists of multiple layers, including one-dimensional convolutional layer, ultra-lightweight subspace attention mechanism (ULSAM), bidirectional long and short-term memory (BiLSTM), quantile regression (QR) and kernel density estimation (KDE). The one-dimensional convolutional layer and ULSAM can extract sequential features and highlight key information from the data; the BiLSTM processes time series data in both directions and conveys historical information; the QR and KDE models generate interval prediction with a given confidence level. Based on the proposed interval estimation, a refined PV uncertainty set can be established and adopted by robust optimal scheduling of EHIES utilising min-max-min algorithm. The simulation results have demonstrated the estimation accuracy and adaptability to various weather scenarios.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"5 4","pages":"462-476"},"PeriodicalIF":2.4,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46832644","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

Detecting safe operational regimes of synchronous motor-generator pair for wind integration: A non-linear perspective 检测风电一体化同步电机-发电机对的安全运行机制:一个非线性的视角

IF 2.4

IET Energy Systems Integration Pub Date : 2023-08-25 DOI: 10.1049/esi2.12113

Rajesh Tanna, Vivek Mohan, Gopalakrishnan Ennappadam Ananthanarayanan, Karthik Thirumala

{"title":"Detecting safe operational regimes of synchronous motor-generator pair for wind integration: A non-linear perspective","authors":"Rajesh Tanna, Vivek Mohan, Gopalakrishnan Ennappadam Ananthanarayanan, Karthik Thirumala","doi":"10.1049/esi2.12113","DOIUrl":"10.1049/esi2.12113","url":null,"abstract":"In this article, the stability of a synchronous motor generator pair (SMGP) used for improving the inertia of grid-connected renewable energy systems is investigated. The useful operational regime for different sets of system parameters is identified, such as electromagnetic torque, damping co-efficient, and inertia by employing bifurcation analysis to detect stability boundaries. For the first time, the existence of bi-stable regimes for the SMGP with non-linear stability analysis is revealed. The authors' analysis unravels the possibility of the system getting transited to unsafe operation even when the system is in the linearly stable region. The existence of the bistable regime indicates the possibility of the system becoming unstable even when the eigenvalues are in the left half plane. The authors also identify globally stable and globally unstable regimes in the parameter space. The safe operating range of inertia and damping co-efficient values helps in the design of a suitable MGP set that is robust to frequency deviations, even with a low inertia source. With the recommended values of electromagnetic torque, the authors' analysis provides a safe operational regime for power generation from renewable energy sources.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"5 4","pages":"430-443"},"PeriodicalIF":2.4,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47896688","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

Mountain gazelle optimisation-based 3DOF-FOPID-virtual inertia controller for frequency control of low inertia microgrid 基于山羚羊优化的3DOF‐FOPID‐虚拟惯性控制器用于低惯性微电网的频率控制

IF 2.4

IET Energy Systems Integration Pub Date : 2023-08-18 DOI: 10.1049/esi2.12111

Swapan Santra, Mala De

{"title":"Mountain gazelle optimisation-based 3DOF-FOPID-virtual inertia controller for frequency control of low inertia microgrid","authors":"Swapan Santra, Mala De","doi":"10.1049/esi2.12111","DOIUrl":"10.1049/esi2.12111","url":null,"abstract":"The primary objective of the authors is to design a new robust and improved virtual inertia controller (VIC) for renewable energy dominated inverter interfaced low inertia microgrid (LIMG). Increasing penetration of inertia-less renewable generation in microgrid leads to increased frequency deviation during and after a disturbance. To improve the frequency response of the LIMG, conventional VIC added with different second stage and third stage controllers are proposed in existing works. Higher degree-of-freedom (DOF) PID controller synchronised with fractional-order (FO) operators are used with conventional VIC controllers. These controllers work in addition with conventional VIC and the multi-stage controllers make the system more complex. To reduce the number of controller stages and, subsequently, reduce cost and complexity of the system, a single stage 3DOF-FOPID controller is proposed to mitigate the frequency deviation after a disturbance in a LIMG. Performance of the proposed single stage controller is compared with that of the existing controllers to establish the advantages of the proposed controller. The parameters of the proposed 3DOF-FOPID controller are optimised by Mountain Gazelle Optimsation. The robustness of this controller is also tested for random load fluctuation and renewable power variations in presence of system non-linearities.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"5 4","pages":"405-417"},"PeriodicalIF":2.4,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49043101","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

Optimal energy storage configuration for joint energy-regulation market participating renewable energy plants with excess revenue recovery mechanism 具有超额收入回收机制的联合能源监管市场参与可再生能源工厂的最佳储能配置

IF 2.4

IET Energy Systems Integration Pub Date : 2023-08-14 DOI: 10.1049/esi2.12112

Weihong Liu, Qiangyu Ren, Jiaojiao Deng, Jincheng Guo, Xiaoming Zheng, Hongli Liu

{"title":"Optimal energy storage configuration for joint energy-regulation market participating renewable energy plants with excess revenue recovery mechanism","authors":"Weihong Liu, Qiangyu Ren, Jiaojiao Deng, Jincheng Guo, Xiaoming Zheng, Hongli Liu","doi":"10.1049/esi2.12112","DOIUrl":"10.1049/esi2.12112","url":null,"abstract":"The fluctuation and stochastic characteristics of renewable energy resources challenge the secure system operation and also impose significant financial risks for the market participating renewable energy plants (REPs). Energy storage systems (ESSs) can serve as effective tools in enhancing the operating flexibility of REPs, thus improving their profitability while making them grid-friendly. However, current studies focussing on the energy market participation of ESS-equipped REPs neglect ESSs' frequency regulation performance. Moreover, power output deviation and power curtailment of REPs bring difficulties to the integration of renewable energy. To address these challenges, an optimal ESS configuration method for REPs participating in the joint energy-regulation market is proposed first. A method considering constraints on frequency regulation performance is applied. Then, to reduce power output deviation and power curtailment of REPs, an incentive mechanism based on the excess revenue recovery is implemented to induce the grid-friendly power outputs of REPs. Numerical analysis on XJTU-ROTS2017 systems demonstrates that the optimal ESS configuration results obtained from the proposed method could promote the profitability of ESS-equipped REPs. The results also verify the effectiveness of the excess revenue recovery mechanism in facilitating the grid-friendly operation behaviours of the ESS-equipped REPs.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"5 4","pages":"418-429"},"PeriodicalIF":2.4,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46328329","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

DC-side stability analysis of grid-tied converter with different control modes based on electrical torque analysis 基于电转矩分析的不同控制方式并网变流器直流侧稳定性分析

IF 2.4

IET Energy Systems Integration Pub Date : 2023-08-06 DOI: 10.1049/esi2.12110

Xu Zhang, Yujun Li, Jiapeng Li, Ting Wu, Songhao Yang, Zhiguo Hao

{"title":"DC-side stability analysis of grid-tied converter with different control modes based on electrical torque analysis","authors":"Xu Zhang, Yujun Li, Jiapeng Li, Ting Wu, Songhao Yang, Zhiguo Hao","doi":"10.1049/esi2.12110","DOIUrl":"10.1049/esi2.12110","url":null,"abstract":"The DC-side stability of the grid-tied converter under different control modes is fully investigated using electrical torque analysis. The small-signal model of a single converter connected to an ideal DC bus under various control modes is formulated. Accordingly, the damping and synchronising coefficient contributed by the DC network and controllers of grid-tied converter are separately accessed using the electrical torque analysis method and the stabilising conditions of the grid-tied converter operating under different control modes are further derived. The system stability mainly corresponds with DC network dynamics under constant active power control mode. On the contrary, the grid-tied converter under constant DC-link voltage control mode has no stability problem. Generally, elevating the DC-link capacitance or decreasing the droop gain can greatly improve the stability margin reserve of the VSC-HVDC links. In addition, the control gains of the classical PQ controller are proven to have limited impacts on DC-side system stability. Finally, the results of numerical simulation prove the validity of the proposed stability analysis method and the stable boundary for the grid-tied converter with different control modes.","PeriodicalId":33288,"journal":{"name":"IET Energy Systems Integration","volume":"6 1","pages":"31-44"},"PeriodicalIF":2.4,"publicationDate":"2023-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/esi2.12110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43967221","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