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On optimal sizing, siting and timing of distribution substations 配电变电所的最佳规模、选址和时间安排
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565964
S. Najafi, R. Gholizadeh
{"title":"On optimal sizing, siting and timing of distribution substations","authors":"S. Najafi, R. Gholizadeh","doi":"10.1109/EPDC.2013.6565964","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565964","url":null,"abstract":"Optimal distribution substation placement is one of the major components of optimal distribution system planning projects. This paper proposes the application of an Imperialist Competitive Algorithm (ICA) for the optimal expansion planning of large distribution network, solving the optimal sizing, siting and timing of medium voltage substation, using related fixed and variable costs subject to any operating and optimization constraints. A step by step expansion design and planning is proposed to consider dynamic behavior of the load forecasting uncertainty, asset management and geographical constraints. In order to reach the global solution, an effective coding for the ICA parameter is developed. The value of loads' density in every site is determined by mid and long-term load forecasting program. The results show the efficiency and capability of the proposed method which has been tested on a large-scale real size distribution network.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"16 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131437081","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
Application of embedded Z-Source inverters in Grid connected photovoltaic systems 嵌入式z源逆变器在并网光伏系统中的应用
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565954
S. Khani, L. Mohammadian, Seyed Hossein, K. R. Milani
{"title":"Application of embedded Z-Source inverters in Grid connected photovoltaic systems","authors":"S. Khani, L. Mohammadian, Seyed Hossein, K. R. Milani","doi":"10.1109/EPDC.2013.6565954","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565954","url":null,"abstract":"This paper proposes the use of the embedded Z-Source (EZ-source) inverters in photovoltaic (PV) grid interconnection. Being different from the traditional Z-source inverter, EZ-source inverters are constructed by inserting dc sources into the X-shaped impedance network so that the dc input current flows smoothly during the whole switching period unlike the traditional Z-source inverter. Fully parallel embedded Z-Source (FPEZ-source) inverters are one of the EZ-source inverters topologies with two isolated dc sources are embedded with each inductor of X-shaped network in series and so we can use two PV panel in this structure. The control system consist of two parts: one part adjusts the shoot through time for maximum power point tracking (MPPT) by simple dp/dv method and another part generate the reference current for FPEZ-source inverter to inject maximum available power of PV array to grid with high quality and maintain DC link capacitor voltage in its reference value. The performance of proposed structure and control strategy is validated with simulation results obtained using PSCAD/EMTDC software.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116429664","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: 8
New fuzzy control system design for maximum power point tracking of wind turbine 风电机组最大功率点跟踪模糊控制系统设计
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565957
Hamed Heydari-doostabad, Reza Keypour, Naser Eskandarian, M. Khalghani
{"title":"New fuzzy control system design for maximum power point tracking of wind turbine","authors":"Hamed Heydari-doostabad, Reza Keypour, Naser Eskandarian, M. Khalghani","doi":"10.1109/EPDC.2013.6565957","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565957","url":null,"abstract":"This paper introduces a new fuzzy control system that is consisted of uncertainty to extract maximum possible power of wind. This system is based on fuzzy logic that can be tracked maximum power point of wind conversion system based on Permanent Magnet Synchronous Generator. In this type of fuzzy system determination of membership function is not with exact and membership functions are determined by a bound of operating.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133017048","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: 9
Application of a grid scale energy storage system to reduce distribution network losses 电网规模储能系统在降低配电网损耗中的应用
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565963
H. Saboori, H. Abdi
{"title":"Application of a grid scale energy storage system to reduce distribution network losses","authors":"H. Saboori, H. Abdi","doi":"10.1109/EPDC.2013.6565963","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565963","url":null,"abstract":"Recent progress in advanced energy storage systems (ESS) and their relative technological maturity imply a promising future for energy storage. As a consequence, the use of stored energy to support and optimize the generation, transmission, and distribution subsystems has been grown up worldwide. One of the ESS applications is using them for load leveling. Since network losses is a square function of current, shifting load from peak to off-peak periods can potentially reduce system losses. This paper gives a quantitative survey of the possible reduction in losses, for a situation where distribution feeder load is shifted in time but not reduced. Load leveling practice will be done by an ESS unit installed in the distribution substation. Various factors governing loss reduction such as transformer side installation (MVlLV) are analyzed. Also, required ESS characteristics like Ampere-hour (Ah) capacity, current, power, and charge /discharge speed to ideally leveling the load are presented. Simulation results show that besides loss reduction, load leveling has a significant impact on network capacity. In other words, shifting peak load can defer investment plans considering load growth in the near future.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128251725","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: 28
Ethical climate, job satisfaction, organizational commitment and intention to leave in personnel of shiraz electric power distribution company 设拉子配电公司员工的道德氛围、工作满意度、组织承诺和离职意向
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565965
Hojat Moshtaghian Abarghooi, Azim Nobakht, Ali Anvari
{"title":"Ethical climate, job satisfaction, organizational commitment and intention to leave in personnel of shiraz electric power distribution company","authors":"Hojat Moshtaghian Abarghooi, Azim Nobakht, Ali Anvari","doi":"10.1109/EPDC.2013.6565965","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565965","url":null,"abstract":"Purpose of this study was to investigate the relationship between ethical climate, job satisfaction, organizational commitment and intention to leave, among employees in Shiraz electric distribution company. This study is applied research, and correctional study, was conducted in 1390. The Statistical Society included 100 people from employees of Shiraz electric distribution company. In this study, measurement tools, was standardized questionnaires. Islamic ethics questionnaire Yousef Darwish, 2000, Spector Job Satisfaction Questionnaire, 1997, blav intention to leave questionnaire 1978 and Alen and Mier organizational commitment questionnaire 2004. Lisrel and Spss software were used for analysis. The results confirm the causal model. Results of research showed that ethical climate has positive effect on organizational commitment and and job satisfaction and organizational commitment have negative effect on intention to leave. The results of research can improve job satisfaction and organizational commitment bye improve ethical climate and can reduce intention to leave in organization.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"486 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132752453","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
Design and use of a sensitive device to prevention of stealing wires in power distribution networks 设计和使用一种敏感装置来防止配电网络中的电线被盗
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565972
F. Mohammadi
{"title":"Design and use of a sensitive device to prevention of stealing wires in power distribution networks","authors":"F. Mohammadi","doi":"10.1109/EPDC.2013.6565972","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565972","url":null,"abstract":"On average a lot of wires used in electrical power distribution network become stolen every day and a very heavy cost spends on replacing new wires to stolen-wires. In this project, the stealing of power distribution network's wire will prevent and reduce with using systems-based with a very low cost method and high precision.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123486571","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
Investigation on transient stability of an industrial network and relevant impact on over-current protection performance 工业电网暂态稳定性及其对过流保护性能影响的研究
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565971
B. Keyvani, H. Nafisi, H. Lesani
{"title":"Investigation on transient stability of an industrial network and relevant impact on over-current protection performance","authors":"B. Keyvani, H. Nafisi, H. Lesani","doi":"10.1109/EPDC.2013.6565971","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565971","url":null,"abstract":"System protection performance and transient stability of the electrical network are significantly affected by each other. The larger the time delay in which protection detects and clears the fault, the more likely loss of synchronism will be, especially in the networks with internal generation. Over current protection schemes inherently operates with considerable delay. Moreover, system dynamic oscillations discernibly aggravate their performance. Therefore utilizing them as main protection is controversial and even abortive in order to maintain system stability. In this paper, transient stability of a real industrial network is studied. The study is investigated using critical clearing time (CCT) criterion for different network configuration. Equipments such as generators and motors are modeled and simulated by DIgSILENT software. In addition, the operation of over current relays adjusted by conventional methods is investigated dynamically and its performance is examined under different network configurations.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":" 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113947395","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
A new method to analyze power quality phenomena using wavelet and s-transform matrix 提出了一种利用小波变换和s变换矩阵分析电能质量现象的新方法
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565970
Mohsen Hosseini, Saed Jalilzade
{"title":"A new method to analyze power quality phenomena using wavelet and s-transform matrix","authors":"Mohsen Hosseini, Saed Jalilzade","doi":"10.1109/EPDC.2013.6565970","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565970","url":null,"abstract":"A novel method based on s-transform matrix for analyzing power quality is proposed in this paper. It proposes a very fast and robust algorithm to identify and measure PQ disturbances. The capability of this algorithm to recognize and measure disturbances in both time and frequency domains will assist in precise disturbance localization and detection. Many case studies considered here, containing voltage swell, voltage sag, harmonics, interharmonics, transients, voltage changes with multiple frequencies, voltage fluctuation, or flicker and voltage disrupt will be investigated comprehensively by using this new time-frequency analysis method. Calculations have been carried out by matlab software, and the results shows that this method can use in accurate PQ disturbance identification.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122585470","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
Improving direct load control implementation by an inititative load control method 采用主动负荷控制方法改进直接负荷控制的实施
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565975
Mohammad Rastegar, M. Fotuhi‐Firuzabad, M. Moeini‐Aghtaie
{"title":"Improving direct load control implementation by an inititative load control method","authors":"Mohammad Rastegar, M. Fotuhi‐Firuzabad, M. Moeini‐Aghtaie","doi":"10.1109/EPDC.2013.6565975","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565975","url":null,"abstract":"Demand response (DR) as a state-of-the-art program is accommodated in the energy efficiency contexts of the smart grid. Lack of the customer knowledge about how to respond to the time-differentiated tariffs and offered controlling signals is the major obstacle in the way of broad DR implementing. As a solution, an optimization method, namely load control (LC), is proposed to automatically control the on/off status of the responsive appliances in a smart home. This paper focuses on the direct load control (DLC) program in the category of incentive-based DR programs. LC is extended to consider inconvenience cost of the DLC implementation for DLC program participants. Outputs of the extended LC would be an advice for the customer to determine whether it is financially profitable to participate in the offered DLC program or not. Numerical studies are effectuated to investigate different features of the LC and DLC program.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121509505","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: 9
Nonlinear control of STATCOM in presence of filter based on indirect control of DC link voltage 基于直流链路电压间接控制的有滤波器的STATCOM非线性控制
18th Electric Power Distribution Conference Pub Date : 2013-07-25 DOI: 10.1109/EPDC.2013.6565969
F. Moghaddam, A. Amel, H. Abyaneh, N. Farokhnia
{"title":"Nonlinear control of STATCOM in presence of filter based on indirect control of DC link voltage","authors":"F. Moghaddam, A. Amel, H. Abyaneh, N. Farokhnia","doi":"10.1109/EPDC.2013.6565969","DOIUrl":"https://doi.org/10.1109/EPDC.2013.6565969","url":null,"abstract":"In previous researches, a signal-based model of power network and STATCOM accompanied by its controller is presented. Using such a model, considering shunt filters is so complicated. Implementing filters is the most popular method of harmonic elimination in networks which contain FACTS & power electronic devices. Also, there is a need to simulate the real model of power network and STATCOM switching model. This type of modelling provides us with the capability of doing some important studies such as: fault analysis, stability analysis and other similar analyses about the interaction between STATCOM and the power network operation. In this paper, a real power and switching model of STAT COM accompanied by an efficient controller in presence of a shunt filter is proposed. This model makes it possible to easily adapt the controller operation in presence of filter, with no necessity of solving the complicated equations which exist in signal-based models. Using this model, the controller is designed when the shunt filter is utilized. Moreover, the effectiveness of filter utilization in reducing the current THD is also studied. The proposed STATCOM controller is nonlinear, which is based on indirect control of DC link voltage.","PeriodicalId":179631,"journal":{"name":"18th Electric Power Distribution Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132686727","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
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