scholarly journals ANALISIS HUBUNG SINGKAT PADA GARDU INDUK 150/20 KV (STUDI KASUS DI GARDU INDUK GANDUL, CINERE)

2020 ◽  
Vol 4 (2) ◽  
pp. 53-59
Author(s):  
Cilvia Calnela ◽  
Suyitno ◽  
Imam Arif Raharjo
Keyword(s):  
Short Circuit ◽  
Circuit Breaker ◽  
Short Circuit Current ◽  
Power Station ◽  
Three Phase ◽  
Qualitative Descriptive ◽  
The Subject ◽  
The Difference ◽  
Short Circuit Fault ◽  
Manual Calculation

This study aims to determine the difference in short circuit current with manual calculation and ETAP 12.60 Simulation  in to know the suitability of capacity circuit breaker Substasion 150/20 kV at Gandul. The used method is qualitative descriptive method. The subject that will be studied is short circuit on the substation 150/20 kV Gandul Cinere. The research was conducted by using is manual calculation and software ETAP 12.60 simulation. The results obtained is differences of the short circuit current is not significant between the manual calculation and software ETAP 12.60 simulation in three conditions include 0.572% for the conditions of short circuit fault of one phase to ground, 0.884% for the conditions of short circuit fault of phase to phase and last 0.884% for the short circuit fault of three phase. Furthermore, the result of the calculation of the short circuit current will be used as an indicator of a determinant of the suitability of the capacity circuit breaker substation 150/20 kV at Gandul , obtained that a comparison of the rating circuit breaker installed (existing) is great against the result of the election of the rating circuit breaker base on manual calculation. So it can be concluded that the circuit breaker beinstalled on the substation 150/20 KV at Gandul, has a capacity that suits your needs and still fit for use. ABSTRAK Penelitian ini bertujuan untuk mengetahui perbedaan besar arus hubung singkat antara perhitungan manual dan simulasi ETAP Power Station 12.6 serta untuk mengetahui kesesuaian kapasitas pemutus tenaga GI Gandul 150/20 kV. Metode yang digunakan adalah deskriptif kualitatif. Subjek pada penelitian ini adalah arus hubung singkat pada Gardu Induk 150/20 kV Gandul Cinere. Penelitian dilakukan menggunakan perhitungan manual dan simulasi software ETAP Power Station 12.6. Hasil penelitian diperoleh bahwa perbedaan hasil arus hubung singkat yang tidak signifikan antara perhitungan manual dan simulasi software ETAP Power Station 12.6 dalam tiga kondisi meliputi 0.572% untuk kondisi gangguan hubung singkat salah satu fasa ketanah, 0.884% untuk kondisi gangguan arus hubung singkat fasa ke fasa dan terakhir 0.884% untuk gangguan arus hubung singkat tiga fasa. Selanjutnya, hasil perhitungan arus hubung singkat tersebut akan digunakan sebagai indikator penentu kesesuaian kapasitas pemutus PMT (Circuit Breaker) GI Gandul 150/20 kV, diperoleh bahwa perbandingan rating pemutus PMT yang terpasang (existing) lebih besar terhadap hasil pemilihan rating pemutus PMT berdasarkan perhitungan manual. Sehingga dapat disimpulkan bahwa pemutus tenaga yang terpasang pada di GI Gandul 150/20 kV memiliki kapasitas yang sesuai dengan kebutuhan dan masih layak digunakan.

The Economic Operation of Common Coupling Groups of Distribution Transformer

2014 ◽  
Vol 521 ◽  
pp. 288-291
Author(s):  
Yu Sheng Quan ◽  
Xin Zhao ◽  
Hua Gui Chen ◽  
En Ze Zhou
Keyword(s):  
Single Phase ◽  
Short Circuit ◽  
Phase System ◽  
Distribution Transformer ◽  
Three Phase ◽  
Unbalanced Load ◽  
Transformer Coupling ◽  
The Difference ◽  
Short Circuit Fault ◽  
Better Than

Based on the method of symmetrical components of D, 11 and Y, o distribution transformer coupling two different effects of different magnetic circuit coupled to the three-phase system with a system-generated analysis and comparison. Analysis of the difference between the two groups of different connections on the transformer structure. Described in the single-phase short circuit fault clearing, 3n harmonic current suppression and affordability aspects of single-phase unbalanced load, D, ll coupling transformers are significantly better than Y,0 coupling transformer. This has necessarily important for the study of energy loss reduction.

scholarly journals Setting Kerja Waktu Relay Arus Lebih pada Penyulang Kikim di Gardu Induk Sungai Juaro

Electrician ◽  
2019 ◽  
Vol 13 (2) ◽  
pp. 57
Author(s):  
Sarinah Agi Dia Savitri ◽  
Feby Ardianto ◽  
Bengawan Alfaresi
Keyword(s):  
Electric Power ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Working Time ◽  
Power Station ◽  
Two Phase ◽  
Operation System ◽  
Excess Current ◽  
Three Phase ◽  
The Impact

Intisari — Gangguan-gangguan yang sering terjadi pada operasi sistem tenaga listrik dapat mengakibatkan terganggunya penyaluran tenaga listrik ke konsumen, sehingga menimbulkan arus hubung singkat yang cukup besar, untuk menghindari akibat gangguan tersebut diperlukan perlindungan jaringan dengan memasang suatu relay proteksi. Tujuan dari penelitian ini adalah melakukan simulasi menggunakan software ETAP dan perhitungan arus hubung singkat serta setting waktu kerja relay arus lebih. Metode yang digunakan untuk menganalisis gangguan hubung singkat yaitu 1) identifikasi data, 2) simulasi, 3) perhitungan, 4) hasil dan analisis serta 5) kesimpulan. Hasil penelitian, simulasi software ETAP arus gangguan hubung singkat maksimum pada jarak 25% dengan arus gangguan tiga fasa sebesar 2877.341 A, dua fasa sebesar 2672.708 A, dan satu fasa sebesar 2491.835 A. Gangguan minimum pada jarak 100% dengan arus gangguan tiga fasa sebesar 502.032 A, dua fasa sebesar 434.671 A, dan satu fasa sebesar 347.035 A. Sedangkan untuk hasil simulasi waktu kerja relay arus lebih sisi incoming sebesar 1 detik dan sisi outgoing sebesar 0.55 detik, hasil perhitungan waktu kerja relay arus lebih sisi incoming sebesar 0.99 detik dan sisi outgoing sebesar 0.54 detik.Kata kunci — Gangguan Hubung Singkat, relay arus lebih, ETAP Power Station 12.6.0.  Abstract — Interferences that often happen in an operation system of electric power can cause in disruption of distribution the electric power to consumers, so it causes quite large shor-circuit current. To avoid the impact of that inrerferences,setting relay portection to protect the network is needed. The purpose of the reserch is doing a simulation using ETAPsoftware, calculating the short-circuit current, and setting the working time of excess-current relay. The method that used to analyze the interferences of short-circuit current are : 1) data identifying, 2) Simulation, 3) calculation, 4) result and analysis and, 5) conclution. The results of the research show that the maximum interferences of short -circuit current at 25% of distance with three phase Interferences is 2877,341 A, two -phase is 2672,708 A, and one-phase is 2491,835 A. The minimum Interferences at 100% distance with three phase Interferences is 502,032 A, two -phase is 434,671 A, and one-phase is 347,035 A. And the result of the simulation time of excess-current relay on incoming side is 1 second and on feeder side is 0.55 second, the results of the calculation working time of excess-current relay on the incoming side are 0.99 second and on the feeder, a side is 0.54 secondKeywords— short circuit, over current relay, ETAP power station 12.6.0

scholarly journals A Novel Low Voltage Selective Circuit Breaker with Additional Current Path

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8179
Author(s):  
Bartosz Rozegnał ◽  
Paweł Albrechtowicz ◽  
Piotr Cisek
Keyword(s):  
Low Voltage ◽  
Supply Voltage ◽  
Short Circuit ◽  
Circuit Breaker ◽  
Short Circuit Current ◽  
Circuit Breakers ◽  
Current Path ◽  
Correct Reaction ◽  
The Subject ◽  
Selection Of

The subject of the article is a description of the operating principle of the new proposal of the selective circuit breaker, which is an extension of the existing selective devices. The solution proposed in the article allows one to increase the selectivity range of classic selective circuit breakers. In the case of networks with high values of short-circuit loop impedance, operating at reduced supply voltage, the proposed solution will not limit the short-circuit current too excessively as it is in the case of classic solutions. This advantage will allow for the correct reaction of the protections preceding them. The article presents the structure and analysis of the selection of parameters of the proposed solution. The results of simulation calculations have also been illustrated.

Analysis of Fault Recorder Data for Short-Circuit Current in a 500kV Busbar Short-Circuit Accident

2011 ◽  
Vol 383-390 ◽  
pp. 1290-1294
Author(s):  
Wei Cao ◽  
Yong Sheng Wang ◽  
Bei Liu ◽  
Wei Wang
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Frequency Component ◽  
Fault Recorder ◽  
Three Phase ◽  
Dc Component ◽  
Grid Operation ◽  
Short Circuit Fault ◽  
Operation And Management ◽  
Fundamental Frequency Component

The three-phase short-circuit fault of the 500 kV busbar of Waigaoqiao No.2 Power Plant was described, and the fault recorder data was analyzed for short-circuit current. The RMS of short-circuit current decaying fundamental frequency component, DC component and the attenuation time constant was obtained by Fourier transform, extrapolating with the exponential function. Finally, Corresponding suggestions for grid operation and management were also proposed.

scholarly journals Development and Testing of a 252 kV/2500 A-40 kA Multi-Break Bus-Coupler Fast Vacuum Circuit Breaker

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4285
Author(s):  
Kui Ma ◽  
Xiaofei Yao ◽  
Luyang Zhang ◽  
Shaogui Ai ◽  
Shuhong Wang ◽  
...  
Keyword(s):  
High Velocity ◽  
Short Circuit ◽  
Circuit Breaker ◽  
Short Circuit Current ◽  
Test Results ◽  
Vacuum Circuit Breaker ◽  
In Series ◽  
Short Circuit Fault

It is effective to open the bus-coupler circuit breaker in case of a short-circuit fault. A fast vacuum circuit breaker (FVCB) is an ideal bus-coupler circuit breaker due to its high velocity. The objective of this study was to develop and test a 252 kV/2500 A-40 kA multi-break bus-coupler FVCB. The 252 kV FVCB contained 12 FVCB units. Each phase consisted of four FVCB units connected in series. Each FVCB unit had an electromagnetic repulsion mechanism with an average opening velocity reaching 6.5 m/s. Test results showed the opening time was 1.11 ± 0.08 ms. The capacitance of the voltage grading capacitor of each break was determined to be 10 nF. The prototype 252 kV bus-coupler FVCB passed all partial test duties according to the IEC 62271-100: 2008 and IEC 62271-1: 2007 standards, which include an insulation test and a terminal fault test among others. A 252 kV/2500 A-40 kA multi-break bus-coupler FVCB can be used to quickly cut off a short-circuit fault and effectively limit a short-circuit current.

Teaching Short - Circuit Calculation with Off - Nominal Turns Ratio Transformers

TEM Journal ◽  
2021 ◽  
pp. 1525-1533
Author(s):  
Allen A. Castillo ◽  
M. Natalia Galván Osuna ◽  
Norma A. Barboza Tello ◽  
Alejandra J. Vega
Keyword(s):  
Case Studies ◽  
Short Circuit ◽  
Circuit Analysis ◽  
Industrial System ◽  
Software Simulation ◽  
Three Phase ◽  
Short Circuit Calculation ◽  
The Subject ◽  
Ieee Standards ◽  
Short Circuit Analysis

Teaching short-circuit analysis is conducted primarily through case studies; however, there are not many validated short-circuit studies available on the subject, especially when considering off-nominal turns ratio transformers. In order to improve the teaching of short-circuit analysis, a three phase short-circuit study in an industrial system according to ANSI/IEEE standards by means of Zmatrix method is presented; two case studies are considered: the industrial system with nominal and offnominal turns ratio transformers, in both cases the step by step solution is given in an explicit manner and the analytical results are validated through software simulation.

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