International Journal of Electrical and Computer Engineering (IJECE) Vol. 9, No. 4, August 2020, pp. xx~xx ISSN: 2088-8708, DOI: 10.11591/ijece.v9i4.ppxx-xx 101 A title should be the fewest possible words that accurately describe the content of the paper (Center, Bold, 16pt) First Author1, Second Author2, Third Author3 (10 pt) 1,3Department of Electrical and Computer Engineering, National Chung Cheng University, Taiwan (9 pt) 2Department of Electrical Engineering, Universitas Ahmad Dahlan, Indonesia (9 pt) Article Info ABSTRACT (10 PT) Article history: This paper presents new technical proposal applied to protection coordination of a real industrial power system.First, the impact of distributed Generators on coordination of protective devices is discussed. This technical proposal thus considers both usage of IEC61850 Goose protocol as well as Directional overcurrent element, because in the future both shortcircuit and earth-fault protection settings of MV feeder Intelligent Electronic Devices (IED) may need to adapt to changes in network topology resulting from increased utilization of active distribution network management schemes (depending on the utilized protection scheme). Received Jun 9, 2018 Revised Nov 20, 2018 Accepted Jan 11, 2019 Keywords: First keyword Second keyword Third keyword Fourth keyword Fifth keyword Furthermore, real‐time generic object‐oriented substation events (GOOSE) messages and adaptive protection strategies are used This is an open access article under the CC BY-SA license. Corresponding Author: Name of Corresponding Author, Department of Electrical and Computer Engineering, National Chung Cheng University, 168 University Road, Minhsiung Township, Chiayi County 62102, Taiwan, ROC. Email: [email protected] 1. INTRODUCTION (10 PT) The Industrial Power systems design operates with radial configuration in which power flows from the source to the connected loads, thus, the coordination of protective devices in the radial system is very simple in nature. The distribution system contains protection devices, e.g., fuses, reclosers, relays, and circuit breakers. These protective devices are coordinated in such a way to interrupt the unidirectional flow of the fault current from the source end towards the fault point Conventional upstream/downstream protection coordination schemes for radial power system cannot be applied to microgrids without major modification [2] Journal homepage: http://ijece.iaescore.com 102 2. ISSN: 2088-8708 POWER SYSTEM CONFIGURATION The industrial plant is an island electrical network without any conection with external grid source The electricity demand is met by on-site generation, it also compromises four (4) Gas turbine generators 4x 35, 325 MW at 40°C, and provides the necessary electrical power for the normal needs. In addition to these, an emergency electrical supply system is provided to ensure continuity of operation of essential and vital equipment following the failure of normal plant electrical supply and for black start of gas turbines. This emergency system is based on the concept of four (4) diesel generators supplying a medium voltage (6.6 kV) distribution system feeding the selected emergency loads through medium voltage and low voltage switchgears located in each substation. 3. POWER SYSTEM MODELLING ETAP 20.0.1 simulation software, is used for the modeling of Industrial Power System. The electrical system Modelling was initiated on the basis of the informations gathered from technical characteristics and primary electrical equipment rating making capacity, transformer technical data sheets, medium and low voltage motors and circuit breakers data, and protective Devices files relay settings, its graphic representation began in a single-line diagram. Figure 1 shows only a portion of the single-line diagram extracted from the simulation software and used for the study case. The protective devices coordination study is carried out with also the help of specialized ETAP software, considering the short circuit current values obtained from the short circuit study results, that allow to determine the fuses breaking current, the circuit breaker trigger points settings and relays settings required, in order to have properly coordinated protection feeders and incoming circuits, in accordance with the most widely accepted practices. 4. FALSE TRIPPING OF THE PROTECTION This phenomenon is known as a sympathetic tripping of the protection, wich occurs in reason of the contribution of the distribution generation (synchronous generators) to the sustained short-circuit current in adjacent feeder connected in the same switchgear. [3] An example is shown in Figure 2, In order to show its impact to the protective devices coordination, a simulation of a sympathetic tripping is performed, Figure 3 shows a portion of a typical complex single line diagram, wich is used for the study case. Int J Elec & Comp Eng, Vol. 9, No. 4, August 2020 : xx - xx Int J Elec & Comp Eng ISSN: 2088-8708 103 Figure 4 shows for three phase fault near in one of the feeders Although this paper is mainly focusing proposed method could potentially be used for alleviating sympathetic 5. DIRECTIONAL OVERCURRENT PROTECTION COORDINATION The coordination of protection devices aims to maintain the selectivity among the devices involved in several fault possibilities in order to make assure about the safe operation and the reliability of the electric system.[1] 6. 7. 8. THE PROTECTIVE RELAYS SCHEME SIMULATION AND RESULTS RESULTS AND DISCUSSIONS (10 PT) yy Title of manuscript is short and clear, implies research results (First Author) 104 ISSN: 2088-8708 9. CONCLUSION (10 PT) Provide a statement that what is expected, as stated in the "Introduction" chapter can ultimately result in "Results and Discussion" chapter, so there is compatibility. Moreover, it can also be added the prospect of the development of research results and application prospects of further studies into the next (based on result and discussion). ACKNOWLEDGEMENTS (10 PT) Xx xxx REFERENCES (10 PT) The main references are international journals and proceedings. All references should be to the most pertinent, up-to-date sources and the minimum of references are 25. References are written in IEEE style. Please use a consistent format for references – see examples below (9 pt): [1] X. S. Li, et al., "Analysis and Simplification of Three-Dimensional Space Vector PWM for Three-Phase Four-Leg Inverters," IEEE Transactions on Industrial Electronics, vol. 58, pp. 450-464, Feb 2011. [2] R. Arulmozhiyal and K. Baskaran, "Implementation of a Fuzzy PI Controller for Speed Control of Induction Motors Using FPGA," Journal of Power Electronics, vol. 10, pp. 65-71, 2010. [3] D. Zhang, et al., "Common Mode Circulating Current Control of Interleaved Three-Phase Two-Level Voltage-Source Converters with Discontinuous Space-Vector Modulation," 2009 IEEE Energy Conversion Congress and Exposition, Vols 1-6, pp. 3906-3912, 2009. [4] Z. Yinhai, et al., "A Novel SVPWM Modulation Scheme," in Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE, pp. 128-131, 2009. BIOGRAPHIES OF AUTHORS (10 PT) Xxxx (9 pt) First author’s Photo (3x4cm) Xxxx (9 pt) Second author’s photo(3x4cm) Xxxx (9 pt) Thirth author’s photo(3x4cm) Int J Elec & Comp Eng, Vol. 9, No. 4, August 2020 : xx - xx
