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2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)最新文献

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Fault Detection Method for DG Disconnection in Inverter-Interfaced Microgrids with Photovoltaic System 光伏逆变器接口微电网DG断线故障检测方法
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069387
Abdolhamid Farshadi, H. Nafisi, Hossein Askarian‐Abyaneh
{"title":"Fault Detection Method for DG Disconnection in Inverter-Interfaced Microgrids with Photovoltaic System","authors":"Abdolhamid Farshadi, H. Nafisi, Hossein Askarian‐Abyaneh","doi":"10.1109/IPAPS49326.2019.9069387","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069387","url":null,"abstract":"Due to the growing use of photovoltaic (PV) systems in distribution networks and sensitivity of these systems to high current caused by faults, it is crucial to quickly detect the occurrence of a fault in the network and protect the PV system. This paper proposes a method that uses the direct-axis current component (id) and its rate of change, which is one of the control parameters of the PV system, to detect faults in less than a half cycle. For this purpose, the PV system is precisely modeled in PSCAD/EMTDC software. To verify the performance of the proposed method, various simulations are performed by considering load variations, irradiation fluctuations and various types of faults. The results show the effectiveness of the method both in distinguishing load variations and irradiation fluctuations from faults as well as fault detection.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116539786","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 Method for the End-To-End Testing of Differential Relays 差动继电器端到端测试新方法
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069378
Behrooz Taheri, S. A. Hosseini, Sirus Salehimehr, F. Razavi
{"title":"A New Method for the End-To-End Testing of Differential Relays","authors":"Behrooz Taheri, S. A. Hosseini, Sirus Salehimehr, F. Razavi","doi":"10.1109/IPAPS49326.2019.9069378","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069378","url":null,"abstract":"The stability of power systems has always been an important issue of the electric power transmission industry. Protection systems are one of the significant factors guaranteeing the stability. A very big problem of such systems is that a system defect will be detected when there is a fault in the system. In this case, if the protection system does not operate correct, the power system may encounter instability. The instability of power systems can cause severe damage to power transmission companies and consumers. Protection systems require periodic tests in order to prevent such an incident. In this paper, a new method was introduced for the end-to-end test of the longitudinal differential protective relay. This method was implemented on the AMT-105 relay tester device made by Vebko Amirkabir Company. The proposed algorithm was tested both in a laboratory and in practical conditions (with real line relays). In the following, the test results are expressed in different fault types. The results obviously shows that the mentioned algorithm has the same performance against different faults and there are low changes in the results. This increases insure of the algorithm and its results that is very important in relay Testing.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129840497","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
Communication Delay Time Investigation of Over Current Adaptive Relays in a IEC 61850 based Micro-grid in the Presence of Error 基于iec61850的微电网中存在误差时过电流自适应继电器的通信延迟时间研究
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069375
Seyed Sajad Hazaveh, N. Khodabakhshi-Javinani, Ali Bayandour, N. Jalali, Hossein Askarian‐Abyaneh
{"title":"Communication Delay Time Investigation of Over Current Adaptive Relays in a IEC 61850 based Micro-grid in the Presence of Error","authors":"Seyed Sajad Hazaveh, N. Khodabakhshi-Javinani, Ali Bayandour, N. Jalali, Hossein Askarian‐Abyaneh","doi":"10.1109/IPAPS49326.2019.9069375","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069375","url":null,"abstract":"Calculating the time the message sent from the MCPU to the Integrated Radio Consulting Services (MCPU) relay needs to be calculated from the system topology change because of the need or desire for the services provided. The MCPU is best served by using the MCPU to give you the best option that has changed potential locations and is updating.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131387738","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 Stabilizing Method of Differential Protection Against Current Transformer Saturation Using Current Derivatives 基于电流导数的差动保护饱和稳定新方法
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069379
Siamak Bahari, Tohid Hasani, Heresh Sevedi
{"title":"A New Stabilizing Method of Differential Protection Against Current Transformer Saturation Using Current Derivatives","authors":"Siamak Bahari, Tohid Hasani, Heresh Sevedi","doi":"10.1109/IPAPS49326.2019.9069379","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069379","url":null,"abstract":"As the power system expands, the need to provide reliable energy has also increased, consequently. One of the issues that makes this problem difficult is detecting of short circuit faults in the grid under saturated current transformers (CT) condition. In the case of CT saturation, protective relays encounter many problems. This paper presents two new and practical solutions to tackle this problem. Firstly, it is proposed to use a combination of two signal processing indices for detecting CT saturation in the network fault condition. Then, it is suggested to modify the differential protection characteristic to stabilize it against CT saturation. The simulation has been done on modeled real network in EMTDC/PSCAD and its outputs are analyzed using MATLAB. The results of the simulation confirm the efficiency and usefulness of the proposed method for stabilizing the differential protection against CT saturation.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128001584","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
2020 15th International Conference on Protection and Automation of Power Systems (IPAPS) 2020年第15届电力系统保护与自动化国际会议(IPAPS)
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/ipaps49326.2019.9069372
{"title":"2020 15th International Conference on Protection and Automation of Power Systems (IPAPS)","authors":"","doi":"10.1109/ipaps49326.2019.9069372","DOIUrl":"https://doi.org/10.1109/ipaps49326.2019.9069372","url":null,"abstract":"","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130553227","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
Optimal Adaptive Protection Using Setting Groups Allocation Based on Impedance Matrix 基于阻抗矩阵的设置组分配最优自适应保护
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069377
A. Abbasi, H. Karegar, T. Aghdam
{"title":"Optimal Adaptive Protection Using Setting Groups Allocation Based on Impedance Matrix","authors":"A. Abbasi, H. Karegar, T. Aghdam","doi":"10.1109/IPAPS49326.2019.9069377","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069377","url":null,"abstract":"In this paper, an offline adaptive protection coordination based on Setting Groups (SGs) is proposed to consider the uncertainties in distribution networks. Distributed Generations (DGs) and line outages significantly change the patterns of fault current which results in miss-coordination and non-optimal tripping times. The SGs are systematically assigned based on the impedance matrix to cluster the different operating conditions of grid to a limited number of SGs, using kmeans method. Based on the assigned operating modes to each SG, an optimal coordination is solved to maximize protection system sensitivity, simultaneously preserving the selectivity in case of events like DGs disconnection and line outage. The proposed method is simulated on IEEE 30 Bus and optimum SGs are found using Genetic Algorithm (GA). The results indicate that relays present a robust protection while the selectivity is guaranteed.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132759993","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: 5
Improvement of Security of Transformer Differential Protection in Breaker-and-a-Half Substations 断路器半变电站变压器差动保护安全性的提高
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069382
P. Jafarian, A. Agheli
{"title":"Improvement of Security of Transformer Differential Protection in Breaker-and-a-Half Substations","authors":"P. Jafarian, A. Agheli","doi":"10.1109/IPAPS49326.2019.9069382","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069382","url":null,"abstract":"The differential protection of power transformers is prone to incorrect operation in breaker-and-a-half substations if the transformer winding current is provided by paralleling the bay current transformers (CTs). In this paper, a real event of undesired tripping without the presence of CT saturation under fault current flowing through the bay CTs between the substation buses is analyzed and an approach is proposed to remedy the problem. Simulation studies conducted in PSCAD/EMTDC program show that the nominal accuracy errors of CTs under fault currents below the CTs accuracy limit factor (ALF) can cause false differential currents higher than the usual differential relay setting. Using the proposed approach, the restraint current would be able to desirably stabilize the relay during external faults.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121974971","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: 2
An Energy Variation-Based Method for Discrimination Between the Internal Fault and Inrush Current in Power Transformers 基于能量变化的电力变压器内部故障与涌流判别方法
2020 14th International Conference on Protection and Automation of Power Systems (IPAPS) Pub Date : 2019-12-01 DOI: 10.1109/IPAPS49326.2019.9069376
Behrooz Taheri, S. A. Hosseini, Sims Salehimehr
{"title":"An Energy Variation-Based Method for Discrimination Between the Internal Fault and Inrush Current in Power Transformers","authors":"Behrooz Taheri, S. A. Hosseini, Sims Salehimehr","doi":"10.1109/IPAPS49326.2019.9069376","DOIUrl":"https://doi.org/10.1109/IPAPS49326.2019.9069376","url":null,"abstract":"Inrush currents are over currents that occur during the switching of power transformers. Differential relays can misidentify these currents as a fault and needlessly disconnect a healthy transformer. The typical methods for detecting inrush currents and blocking the function of differential relays are the second harmonic and zero-crossing methods, which are widely used in differential relays. However, these methods have several weaknesses that limit their applicability. This paper presents a new inrush current detection method based on the rate of change in the signal energy. The proposed method has been tested on a 230/63kV network with Ynd11 current transformer and compared with conventional industrial methods for different inrush currents and transformer internal faults.","PeriodicalId":230294,"journal":{"name":"2020 14th International Conference on Protection and Automation of Power Systems (IPAPS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129855506","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: 4
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