Research and Technology in the Electrical Industry最新文献

Multi-objective Dynamic Environmental Economic Dispatch Problem Considering Plug in Electric Vehicles by Using the Improved Exchange Market Algorithm 基于改进交换市场算法的插电式电动汽车多目标动态环境经济调度问题

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.46

Hossein Nourianfar, H. Abdi

{"title":"Multi-objective Dynamic Environmental Economic Dispatch Problem Considering Plug in Electric Vehicles by Using the Improved Exchange Market Algorithm","authors":"Hossein Nourianfar, H. Abdi","doi":"10.52547/ijrtei.1.1.46","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.46","url":null,"abstract":"Global Warming and progression of modern power networks have profoundly changed traditional power grids in terms of fossil fuel consumption and emission of toxic gases. Therefore, auxiliary power plants and ancillary services have been introduced as an effective alternative, to overcome these new challenges in power systems. In this work, the dynamic environmental economic dispatch (DEED) problem, is investigated by considering the plug-in electric vehicles (PEVs), minimizing the fuel cost and greenhouse gas emissions from fossil fuel units. In the mentioned problem, to make it more practical, various operational constraints, including valve-point loading effect (VPLE), ramp rate limits (RRLs) and generation capacity limits are considered. This paper proposes a new multi-objective exchange market algorithm (EMA) based on the non-dominated sorting theory to find the Pareto front. In addition, the impacts of PEVs, as an uncertainty source, on the mentioned problem are analysed in four different charging scenarios. The efficiency of the proposed method has been detailed on three experimental systems and the obtained results are compared with other algorithms in this field. The results show that the maximum percentage reduction in costs for test cases 1 to 3, are about 2.13, 2.69, and 39.48, respectively, and bout 45.96, 48.20 and 44.07, for emission, respectively. The comparative analysis verify the proposed method efficiency, and accuracy in solving the suggested problem.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115592840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development a New Flexibility Index Suitable for Power System Operational Planning 一种适用于电力系统运行规划的柔性指标

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.29

H. Berahmandpour, S. Kouhsari, H. Rastegar

{"title":"Development a New Flexibility Index Suitable for Power System Operational Planning","authors":"H. Berahmandpour, S. Kouhsari, H. Rastegar","doi":"10.52547/ijrtei.1.1.29","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.29","url":null,"abstract":"Article history: Received 28 December 2021 Received in revised form 19 February 2022 Accepted 24 February 2022 Power system flexibility is an important characteristic in both power system planning and operation, which should be evaluated and maintained in the desired value. On the other hand, more renewable energy integration leads to increasing uncertainty and variability in the power system. Therefore, the power system should have the sufficient ability to overcome the adverse effects of uncertainty and variability named as flexibility, which should be improved with suitable tools such as adequate reserve, fast ramp-up/down generation sources and suitable energy storage capacity. Power system flexibility evaluation is the main task that needs suitable indices to indicate the level of system flexibility correctly. In the current paper, a well-known system flexibility index named normalized flexibility index, which is used for power system planning horizon is modified to use for the operational planning time zone. In this concept, the flexibility index is separated into two components, each of them indicating the ability of the power system to withstand upward/downward net-load uncertainty and variability. In the further, this is shown these two components are the same as the upward/downward system reserve and can be converted to economic value simply. So, this concept facilitates the economic trade-off between operation cost and system flexibility, improving cost to achieve the best level of system flexibility.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115656726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution System Restoration by Reconfiguration and MG formation Considering Post-Restoration Failure Probability 考虑恢复后失效概率的配电系统重构与MG形成恢复

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.20

Saeed Nikbakhsh Jahromi, E. Hajipour, M. Ehsan

引用次数: 0

Design and Implementation of a Modified Boost Topology with High Voltage Ratio and Efficiency Besides the Lower Semiconductors Stresses 具有高电压比和高效率的改进升压拓扑结构的设计与实现

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.75

Reza Sharifi Shahrivar, H. Gholizadeh, A. Siadatan, S. Afjei

{"title":"Design and Implementation of a Modified Boost Topology with High Voltage Ratio and Efficiency Besides the Lower Semiconductors Stresses","authors":"Reza Sharifi Shahrivar, H. Gholizadeh, A. Siadatan, S. Afjei","doi":"10.52547/ijrtei.1.1.75","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.75","url":null,"abstract":"Article history: Received 07 November 2021 Received in revised form 25 April 2022 Accepted 08 May 2022 This paper has designed an upgraded form of the boost topology. The voltage ratio of the traditional step-up topology has been increased in quadratic form. Moreover, a low value of the duty cycle, number of components, and voltage/current stresses besides a high efficiency are bold features. The different parameters have been extracted for the ideal/non-ideal modes of the components and continuous/discontinuous current modes. In addition, the different features, such as the current/voltage stresses, have been compared. The efficiency of the designed topology has been extracted, and its various kind of power losses have been compared. The small-signal analysis has been done, and the bode diagram of the system has been extracted. Besides the increased voltage ratio of the designed topology compared to the traditional step-up converter, the continuity of the input current has remained a brilliant feature. Moreover, the semiconductors' stresses have been low-value compared to the recently proposed topologies. Moreover, higher efficiency besides higher voltage gain has been achieved. Finally, the experimental results have been compatible with the simulation and theoretical outcomes. The higher voltage gain of the proposed converter has been caused by the lower value of the duty cycle in comparison with the conventional boost converter, besides an acceptable efficiency and semiconductor stresses.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134253004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Comprehensive Study Approach for Evaluation of Resonance and Ferro-Resonance in HV Substations A Case Study: Khuzestan Regional Electric Company 高压变电站谐振与铁谐振评价的综合研究方法——以胡孜斯坦地区电力公司为例

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.57

MohamadAli Amini, M. Salay Naderi, Ali Asghar Farokhi rad, G. B. Gharehpetian

{"title":"A Comprehensive Study Approach for Evaluation of Resonance and Ferro-Resonance in HV Substations A Case Study: Khuzestan Regional Electric Company","authors":"MohamadAli Amini, M. Salay Naderi, Ali Asghar Farokhi rad, G. B. Gharehpetian","doi":"10.52547/ijrtei.1.1.57","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.57","url":null,"abstract":"Article history: Received 20 November 2021 Received in revised form 07 March 2022 Accepted 04 April 2022 Resonance and ferroresonance in power systems are categorized as two destructive phenomena especially in HV networks which their occurrence are being initiated in consequence of a power system event. Hence, the study of resonance and ferroresonance requires an exhaustive evaluation of possible network events in different network configurations. In each event, the analysis of network voltages is conducted based on identified allowable limits by IEEE 519 standard as evaluation critera. In this paper, a novel comprehensive study approach is used for resonance and ferroresonance phenomena study in a real power system (KzREC). The utilized approach comprises different steps including substation equipment modeling, EMT simulation of the probable switching events, evaluation of correspondence results, and finally detecting the probable ferroresonance occurrence. Furthermore, voltage and current limits are implemented to define impedance criteria for performing resonance evaluation of network buses. In this paper, the detailed evaluation results of a 230 kV substation (Andimeshk) are presented as an example substation. By performing the proposed evaluations, the probable condition which may lead to resonance and ferroresonance occurrence are identified. The results are highly valuable for network operators in the prevention of unintended overvoltages occurrencesubstation.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115175726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Overcurrent Relays Coordination Considering Transient Stability Study of Induction Generator Using a Method Based on Terminal Voltage 基于端电压的过流继电器协调感应发电机暂态稳定性研究

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.10

AmirHossein Taheri Jam, R. Mohammadi Chabanloo, Ehsan Bagherzadeh, H. Askarian Abyaneh, Mojtaba Mohammadi Nasiri

{"title":"Overcurrent Relays Coordination Considering Transient Stability Study of Induction Generator Using a Method Based on Terminal Voltage","authors":"AmirHossein Taheri Jam, R. Mohammadi Chabanloo, Ehsan Bagherzadeh, H. Askarian Abyaneh, Mojtaba Mohammadi Nasiri","doi":"10.52547/ijrtei.1.1.10","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.10","url":null,"abstract":"Article history: Received 27 November 2021 Received in revised form 16 February 2022 Accepted 24 February 2022 Nowadays, with increasing penetration of Induction Generators (IG) in the electricity grid, it is of great importance that IG be connected to the grid in the fault conditions. In this paper, a terminal voltage based method for transient stability study of IG is proposed. For this purpose, an improved analytical method is used to determine Critical Clearing Time (CCT) of IG in the state of grid fault, including near and non-near faults. For the faults occurring far from the terminal of generator, electromagnetic torque is not equal to zero during fault. Hence, equivalent circuit model of IG and network is used to calculate the CCT. A new formulation based on terminal voltage of IG is presented to consider the stability constraint on Over Current Relay (OCR) coordination, to prevent disconnecting of IG in grid fault condition. Simulations are carried out on two samples network, and the results demonstrate the efficiency of proposed method.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131037902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A New Approach to AC Microgrids Protection Using a Bi-Level Multi-Agent System 交流微电网双级多智能体保护新方法

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.66

N. Ghaffarzadeh, A. Bamshad

{"title":"A New Approach to AC Microgrids Protection Using a Bi-Level Multi-Agent System","authors":"N. Ghaffarzadeh, A. Bamshad","doi":"10.52547/ijrtei.1.1.66","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.66","url":null,"abstract":"Article history: Received 17 January 2022 Received in revised form 28 March 2022 Accepted 04 April 2022 Nowadays, microgrids are expanding due to their numerous benefits. However, the control and protection of microgrids is a serious challenge. All the implemented plans for the protection of microgrids have drawbacks. This study presents a bi-level multi-agent system (MAS) approach to microgrids protection. The first level is responsible for microgrid lines protection. Firstly, it calculates the pilot impedance of each line. The pilot impedance is a limited number for internal faults of the line, but it is infinite for external faults of the line. so, the line’s internal fault is detected by evaluation of pilot impedance with a predetermined value. The second level is responsible for Distributed Generation (DGs) protection. Firstly, it decomposes the DGs output signals by Discrete Wavelet Transform (DWT). Then, it multiplies the summations of the first and second level’s details of each signal together as CC index. CC is zero in normal grid conditions and has a negative peak with a sharp negative rate in external faults, and will experience a positive peak with a sharp positive rate for internal faults and changes with a very slow rate in case of grid’s natural transitions. So, the agent detects the fault by evaluating the CC. The simulation results in a 5-bus microgrid indicate the proposed scheme protects the microgrid with a reliability of 100% with considering all microgrid’s uncertainties.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132018960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reliability Enhancement by Strategic Placement of Remotely-Controlled Automation Devices: A Case Study on Tabriz Distribution Network 远程控制自动化设备战略配置提高可靠性:以大不里士配电网为例

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.36

A. Abdolahi, Rahim Ajabi Farshbaf, A. Abbaspour, M. Khodayari

{"title":"Reliability Enhancement by Strategic Placement of Remotely-Controlled Automation Devices: A Case Study on Tabriz Distribution Network","authors":"A. Abdolahi, Rahim Ajabi Farshbaf, A. Abbaspour, M. Khodayari","doi":"10.52547/ijrtei.1.1.36","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.36","url":null,"abstract":"Article history: Received 27 November 2021 Received in revised form 08 March 2022 Accepted 19 March 2022 Achieving high distribution-reliability levels and concurrently minimizing operating costs are as the main issues in distribution system optimization. Determination of the optimal number and location of remote control switches (RCS) in the distribution system network is an essential issue from the reliability and economic points of view. To address these issues, this paper develops a novel multiobjective model from the distribution system viewpoint, wherein the primary objective, optimal RCS placement is implemented aiming at minimizing the operating costs, while in the second objective, the reliability index improvement is taken into account. So, a novel approach from a robust heuristic algorithm, modified non dominated sorting genetic algorithm (MNSGA-II), is developed and presented to solve this multiobjective mixed-integer non-linear programming problem. Simulation results received by the genetic algorithm have been compared with the other popular optimization algorithms, seperately. Results show that the proposed algorithm provides extensively the best performance, in terms of quality of the answer received and computational efficiency. The feasibility of the proposed algorithm was examined by application to two distribution feeders of the Tabriz city distribution network containing the fourth feeder of the TractorSazai substation.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125639935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Power Distribution Grid Reliability Assessment Considering Protection and Control Devices’ Optimal Post-Fault Operation 考虑保控装置故障后最优运行的配电网可靠性评估

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.1

A. Jalilian, Milad Mohamadyari, Homayun Rahimi, M. Karami

{"title":"Power Distribution Grid Reliability Assessment Considering Protection and Control Devices’ Optimal Post-Fault Operation","authors":"A. Jalilian, Milad Mohamadyari, Homayun Rahimi, M. Karami","doi":"10.52547/ijrtei.1.1.1","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.1","url":null,"abstract":"Article history: Received 23 November 2021 Received in revised form 05 February 2022 Accepted 24 February 2022 The reliability level of the distribution network is a judgment tool of the grid and protection design quality, the effectiveness of the fault management unit, and customers’ satisfaction. In this paper, a new approach is presented to evaluate common reliability indices namely ENS, SAIDI, SAIFI, MAIFIe, etc., while reliability improvement via optimal post-fault restoration describes the coordinated operation of various protection and control devices in temporary and permanent fault event conditions. Customers’ outage times are calculated considering different switching operation times to capture manual operation issues, e.g., traffic level, geographical issues, fuse replacements, etc. The optimal service restoration scheme being formulated in a mixed-integer linear programming (MILP) fashion is constrained to network technical limitations, e.g., line thermal capacity, load points voltage level, DG units’ parameters, and island operation. The performance of the proposed framework is verified in IEEE 33-bus test system.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125269519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal Dispatchable DG Location and Sizing with an Analytical Method, based on a New Voltage Stability Index 基于新电压稳定指标的可调度DG最优选址与调度分析方法

Research and Technology in the Electrical Industry Pub Date : 2022-03-01 DOI: 10.52547/ijrtei.1.1.95

M. Aryanfar

{"title":"Optimal Dispatchable DG Location and Sizing with an Analytical Method, based on a New Voltage Stability Index","authors":"M. Aryanfar","doi":"10.52547/ijrtei.1.1.95","DOIUrl":"https://doi.org/10.52547/ijrtei.1.1.95","url":null,"abstract":"Article history: Received 18 January 2022 Received in revised form 30 April 2022 Accepted 08 May 2022 With the high penetration of DGS in the distribution network and its impact on the power loss and voltage profile of the network, the choice of location and the optimal size of the DG has become a challenge for utility companies. In this paper, a method for determining the optimal location and size of dispatchable DG at different load levels for optimal utilization of the distribution network is presented. The goal is to reduce active power losses and improve voltage profiles for stable system performance. The average daily load demand is considered as the load demand profile. The optimal location of DG is determined by sensitivity analysis based on a new voltage stability index. The voltage stability index is based on the voltage breakdown feature and provides an overview of the network voltage stability so that it can show the effect of DG installation location on network voltage stability. DG provides loads at different levels, then by selecting the appropriate bus from the most important buses in terms of index, the optimal size of DG is determined using a search algorithm and based on the lowest active power losses for different load levels. The proposed method on IEEE 33 bus network has been tested using MATLAB software, and its results have been compared with other available methods. The results show the effectiveness of the proposed method in reducing active power losses and improving the voltage profile compared to other available methods.","PeriodicalId":430029,"journal":{"name":"Research and Technology in the Electrical Industry","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132924220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1