scholarly journals Simulasi ETAP untuk Evaluasi Proteksi Gangguan Tegangan Lebih Generator Unit 3 PLTP Kamojang

MIND Journal ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 57-72
Author(s):  
RIFKI FIKRANDANI NUGRAHA ◽  
TEGUH ARFIANTO
Keyword(s):  
Steady State ◽  
Load Shedding ◽  
Protection Relay ◽  
Generator Protection ◽  
Fault Protection ◽  
Terminal Unit ◽  
Nominal Voltage ◽  
Terminal Voltage ◽  
Generator Unit ◽  
Generator Terminal

AbstrakPada penelitian ini dilakukan evaluasi proteksi gangguan tegangan lebih pada generator Unit 3 PLTP Kamojang yang diproteksi oleh sebuah relay tegangan lebih menggunakan simulasi pada software ETAP. Simulasi dilakukan untuk melihat bagaimana cara kerja relay tegangan lebih dan bentuk tegangan lebih yang terjadi pada terminal generator. Skenario simulasi yang digunakan yaitu melakukan pelepasan beban 50,7 MW dan relay yang digunakan dalam simulasi berfungsi untuk menyalakan alarm saat terjadi tegangan lebih. Hasil simulasi memperlihatkan bahwa pada saat terjadi pelepasan beban, relay tegangan lebih menyalakan alarm 1,1 detik setelah membaca tegangan naik hingga 13 kV atau sebesar 110% dari tegangan nominalnya, kemudian tegangan terminal generator naik hingga 13,2 kV hingga kembali ke kondisi steady state 5 detik setelah terjadi kenaikkan tegangan. Hasil simulasi tersebut menunjukkan bahwa relay tegangan lebih yang terpasang pada terminal generator Unit 3 bekerja sesuai dengan fungsinya yaitu untuk memberikan alarm ketika tegangan lebih terjadi.Kata kunci: pelepasan beban, proteksi generator, relay proteksi, simulasi generator, tegangan lebihAbstractThis study evaluates overvoltage fault protection on the generator Unit 3 PLTP Kamojang which is protected by an overvoltage relay using simulation on ETAP software. Simulations are carried out to see how the overvoltage relay works and the form of overvoltage that occurs at the generator terminals. The scenario used is by do a load shedding of 53,3MW, the relay used in this simulation has a function to turn on the alarm when overvoltage occurs. The results show that when a load shedding occurs, the overvoltage relay turns on the alarm 1,1 seconds after reading the voltage up to 13 kV or 110% of the nominal voltage, then the generator terminal voltage rises to 13.2 kV until it returns to steady state 5 seconds after the voltage increase. The simulation results indicate that the overvoltage relay installed at the generator terminal Unit 3 works according to its function, namely to provide a warning when an overvoltage occurs.Keywords: generator protection, load shedding, overvoltage, protection relay, generator simulation

An Insightful Steady-State Performance of a Squirrel Cage Induction Generator Enhanced with STATCOM

2014 ◽  
Vol 15 (3) ◽  
pp. 205-215 ◽  
Author(s):  
Olorunfemi Ojo ◽  
Mehdy Khayamy ◽  
Mehari Bule
Keyword(s):  
Steady State ◽  
Reactive Power ◽  
Voltage Source ◽  
Induction Generator ◽  
Squirrel Cage ◽  
Steady State Operation ◽  
Terminal Voltage ◽  
Squirrel Cage Induction Generator ◽  
Generator Terminal ◽  
Static Compensator

Abstract This paper presents the regulation of the terminal voltage and reactive power of a grid-connected squirrel cage induction generator. A shunt connected voltage source inverter (VSI) with a capacitor in the DC side operating as a Static Compensator (STATCOM) and a shunt capacitor are used for regulating the generator terminal voltage and limit the reactive power demand from the grid. Simulation results for steady-state operation for a wide variation of speed in the super-synchronous region are presented as well as the dynamic stability of the system. Closed-form steady-state characteristics equations for the system are used to determine key variables and to demonstrate how the operation of the system depends on various parameters. This characteristics curve which contains all of the equations of the system provides the all in one insightful view to the inherent characteristics of the system and the effect of the parameter variation on the terminal voltage plane.

Effects of Electric Machine Parameters on Dynamics of an Isolated Wind-Diesel System

2013 ◽  
Vol 339 ◽  
pp. 586-590
Author(s):  
Chi Hsiang Lin
Keyword(s):  
Electric Machine ◽  
Induction Generator ◽  
Electromagnetic Torque ◽  
Electrical Parameters ◽  
Rotor Resistance ◽  
High Penetration ◽  
Terminal Voltage ◽  
Generator Terminal ◽  
System Frequency

In this paper, dynamics of a high-penetration, no-storage wind-diesel (HPNSWD) system subjected to line faults are studied. It is found that the effect of induction generator electrical parameters on generator electromagnetic torque, system frequency and generator terminal voltage is significant, especially the rotor resistance.

A computational comparison of steady state load shedding approaches in electric power systems

1997 ◽  
Vol 12 (1) ◽  
pp. 30-37 ◽  
Author(s):  
M.A. Mostafa ◽  
M.E. El-Hawary ◽  
G.A.N. Mbamalu ◽  
M.M. Mansour ◽  
K.M. El-Nagar ◽  
...  
Keyword(s):  
Steady State ◽  
Power Systems ◽  
Electric Power ◽  
Electric Power Systems ◽  
Load Shedding ◽  
Computational Comparison

Loss of Excitation Protection of Medium Voltage Hydro Generators Using Adaptive Neuro Fuzzy Inference System

2018 ◽  
pp. 253-285
Author(s):  
Mohamed Salah El-Din Ahmed Abdel Aziz ◽  
Mohamed Ahmed Moustafa Hassan ◽  
Fahmy M. A. Bendary
Keyword(s):  
Fuzzy Inference System ◽  
Fuzzy Inference ◽  
Positive Sequence ◽  
Inference System ◽  
Phase Current ◽  
Neuro Fuzzy ◽  
Sequence Components ◽  
Terminal Voltage ◽  
Generator Terminal ◽  
Excitation Conditions

This chapter presents a new method for loss of excitation (LOE) faults detection in hydro-generators using adaptive neuro fuzzy inference system (ANFIS). The investigations were done under a complete loss of excitation conditions, and a partial loss of excitation conditions in different generator loading conditions. In this chapter, four different techniques are discussed according to the type of inputs to the proposed ANFIS unit, the generator terminal impedance measurements (R and X) and the generator terminal voltage and phase current (Vtrms and Ia), the positive sequence components of the generator terminal voltage magnitude, phase current magnitude and angle (│V+ve│, │I+ve│ and ∟I+ve) in addition to the stator current 3rd harmonics components (magnitudes and angles). The proposed techniques' results are compared with each other and are compared with the conventional distance relay response in addition to other techniques. The promising obtained results show that the proposed technique is efficient.

Experimental Investigations of the Self-Controlled Synchronous Motor Connected to a Three-Phase Line Commutated SCR Inverter

2016 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Tapan Kumar Chakraborty
Keyword(s):  
Steady State ◽  
Synchronous Motor ◽  
The Self ◽  
Experimental Investigations ◽  
Phase Line ◽  
Three Phase ◽  
In Series ◽  
Terminal Voltage ◽  
Excitation Winding ◽  
Steady State Performance

<p>This paper concerns the experimental investigations of the three-phase line commutated SCR inverter fed synchronous motor.  The fabricated system consists of a line-commuted inverter, a three-phase synchronous motor with the excitation winding connected in series to the inverter input, a terminal voltage sensor and a gate-pulse generating circuit. The firing pulses for SCRs of the inverter are generated by the microprocessor in proper sequence with the help of synchronizing signal derived from the terminal voltages of the synchronous machine. The steady state performance characteristics are obtained experimentally using the fabricated system. The experimental results show that a three-phase synchronous motor supplied by a line commutated inverter with the excitation winding connected in series to the dc link provide  excellent characteristics of the conventional dc series motor.</p>

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