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Hosseini, S. A.
- A New Method to Recognize the Status of Sic Surge Arresters in Substations
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Authors
Affiliations
1 Department of Electrical Engineering, Islamic Azad University, Ashtian Branch, Ashtian, IR
2 Department of Electrical Engineering, University of Tafresh, Tafresh, IR
3 Department of Electrical Engineering, Science and research branch, Islamic Azad University, Arak, IR
1 Department of Electrical Engineering, Islamic Azad University, Ashtian Branch, Ashtian, IR
2 Department of Electrical Engineering, University of Tafresh, Tafresh, IR
3 Department of Electrical Engineering, Science and research branch, Islamic Azad University, Arak, IR
Source
Indian Journal of Science and Technology, Vol 5, No 5 (2012), Pagination: 2692-2700Abstract
SiC lightning arresters are a kind of lightning arresters that nowadays are substituted with new type such as ZnO lightning arrester. Nonetheless, many SiC lightning arresters in Iran's electricity networks are operating. For instance, all the medium voltage network lightning arresters of Bakhtar Regional Electrical Company (BREC) are SiC type. The company wants to exchange these lightning arresters, but due to high cost and numbers of these lightning arresters, it is decided to put them in suitable ranks up to a due time. Since all suggested tests for recognition of lightning arresters deficiency are laboratory tests and must be done in lab, it isn't possible for the company to transfer all lightning arresters from substation to lab. Therefore, it has been decided to carry out that in the substation. Accordingly, a project has been suggested and carried out by the writers of this paper and the present paper is the result of this project. Different theories in this paper are surveyed. DC test is introduced as a suitable way for correct recognition deficiency of lightning arresters. The acquired results of DC test on some samples of lightning arresters are in coordination with the standard tests that have been carried out in Pars High Voltage Lab. Finally, three groups of arresters are defined according to their operating condition which includes acting good, delayed acting and not operating arresters. According to this classification, BREC is capable to exchange the arresters with respect to condition of the related arrester and with an appropriate priority which is obtained from its condition.Keywords
SiC Lightning Arrester, Electricity NetworkReferences
- Singh RP and Singh TVP (2002) Influence o pollution on the performance of metal oxide surge arresters. IEEE Conf. Elect & Com. Eng. 1, 224-229.
- Kanashiro H, Tatizawa M, Zanotti P, Futoshi Obase and Bacega WR (2009) Diagnostic of silicon carbide surge arresters. WSEAS TRANSACT. on SYSTEMS, 8 (12), 1284-1293.
- Grzybowski S and Gao G (1999) Evaluation of 15-420 kV substation lightning arresters after 25 years of service. Southeastcon 99. Proc. IEEE, pp: 333-336.
- Lenk (2010) Application considerations for gapped silicon-carbide arresters installed on utility high voltage systems; Part II: Energy Consumption. IEEE Conf. Transmission & Distribution Conf. & Exposition, 2010 IEEE PES. pp: 1-8.
- Darveniza M, Mercer DR and Watson RM (1996) An assessment of the reliability of in-service gapped silicon-carbide distribution surge arresters. IEEE Transact. on Power Delivery. 11(4), 1789-1797.
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- IEEE working group 3.4.11 (1992) Modeling of metal oxide surge arresters. IEEE Transact. on Power Delivery. 7(1),302-309.
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- IEC standard 60099-1 (1999) Surge arresters - Part 1: Non-linear resistor type gapped surge arresters for a.c. systems. IEC standard.
- IEC Standard 60099-4 (2004) Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems. IEC Standard.
- Darveniza M and Mercer DR (1996) Service performance of distribution lightning arresters and transformers. Elect. Eng. Trans. Inst. Eng. Aust. EE2,97-112.
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- American standard ANSI/IEEE C6201 (1967) lightning arresters for ac power circuits (being revised) Miller DB, Bo Fan H and Barnes PR (1991) The response of MOV and SiC arresters to steep- front longer duration current pulses. IEEE Transact. on Power Delivery. 6(2), 666-671.
- A Multi-Objective Approach for Improving Technical Factors of Distribution Networks Considering Uncertainties in Loads and Wind Turbines
Abstract Views :176 |
PDF Views:0
Authors
Affiliations
1 Department of Electrical Engineering, Sahand University of Technology, New Sahand Town, Tabriz, IR
2 Department of Electrical Engineering, Ekbatan Institute of Higher Education, Qazvin, IR
3 Department of Electrical Engineering, Golpayegan University of Technology, Isfahan, IR
1 Department of Electrical Engineering, Sahand University of Technology, New Sahand Town, Tabriz, IR
2 Department of Electrical Engineering, Ekbatan Institute of Higher Education, Qazvin, IR
3 Department of Electrical Engineering, Golpayegan University of Technology, Isfahan, IR
Source
Indian Journal of Science and Technology, Vol 9, No 43 (2016), Pagination:Abstract
Objectives: Objectives of this paper are to achieve decreasing power losses, maintaining permissible voltage profiles in distribution networks and also considering the uncertainties of network Components like loads and wind turbines. Methods/ Statistical Analysis: A new method is proposed for Distribution Feeder Reconfiguration (DFR) and capacitor placement considering Wind Turbine (WT) based on an improved reconfiguration technique. The employed DFR method is based on a single loop reconfiguration method which selects the optimal branch in each loop to achieve maximum loss reduction. Moreover, sequence of loops selection is optimized by using an optimization algorithm. Findings: A joint optimization algorithm has been proposed for combination of the capacitor placement and the improved network reconfiguration. This is due to the inherent coupling relationship between these methods, and therefore, simultaneous implementation of them is more effective than considering them separately. For more practical application of the proposed method, stochastic nature of loads and wind turbine generators of the network have been considered. Teaching-Learning Based Optimization (TLBO) algorithm has been employed for the proposed joint optimization problem and its results have been compared to the PSO and GA. The objective function has been proposed for minimizing the total cost due to capacitor placement and energy losses during 2 years with considering the constraints of bus voltages and the current carrying capacity of conductors. The obtained results confirmed the effectiveness of the proposed method. Application/Improvements: Simultaneous implementation of capacitor placement and reconfiguration method, considering stochastic nature of network and also employing TLBO algorithm for the proposed optimization problem.Keywords
Load and Technical Improvement, Distribution Network, Uncertainty, Wind Turbine.- Hybrid ANFIS Model for Predicting Scour Depth using Particle Swarm Optimization
Abstract Views :127 |
PDF Views:0
Authors
Affiliations
1 Department of Technical and Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, IR
2 Civil Engineering Department, Advanced Research Institute for Water and Wastewater, Razi University of Kermanshah, IR
1 Department of Technical and Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran, IR
2 Civil Engineering Department, Advanced Research Institute for Water and Wastewater, Razi University of Kermanshah, IR