Study of Operational Parameters of a Capacitor Bank with Detuned Reactor for Power Factor Correction in a Low Voltage Network

Author(s):  
Ivan Hadzhiev ◽  
Dian Malamov ◽  
Iosko Balabozov ◽  
Ivan Yatchev
Author(s):  
Achmad Solih ◽  
Jamaaluddin Jamaaluddin

Panel system power distribution at Lippo Plaza Mall Sidoarjo consists of several parts, namely from Cubicle 20 KV, 20 KV step-down transformer for 380 V, then the supply to LVMDP (Low Voltage Main Distribution Panel) The new panel to the user. Before delivery to users to note that the power factor is corrected using a capacitor bank. Less good a power factor is turned into inductive load on the capacitor bank so that temperatures high  because of high load resulting capacitor bank erupt. To overcome in this study proposes a safety panel automation power distribution control system using a microcontroller. Control system microcontrollers for safety panel power distribution consists of: Microcontroller (Arduino Nano), Light sensor (LDR), temperature sensor (LM35DZ), LCD 16x2 I2C, Actuators (fan, buzzer, relay switch breaker network three phase), switch ( relay 5 VDC), ADC as Input data. The working principle of this microcontroller LM35DZ if the sensor detects a high temperature fan will flash, if the LDR sensor detects sparks then the buzzer will sound as a warning sign of the dangers and disconnected the electricity network. From the design of a safety tool for power distribution panels due to high temperatures or sparks as well as the expected rate of fire outbreaks can be prevented.


2021 ◽  
Vol 11 (10) ◽  
pp. 4322
Author(s):  
Martina Kutija ◽  
Luka Pravica

This paper presents a case study of three-phase ferroresonance in a low-voltage power factor correction system and investigates the influence of harmonic distortion on the occurrence of ferroresonance. Ferroresonance is an extremely dangerous and rare phenomenon that causes overvoltages and overcurrents in the system and degrades the power quality. The study is carried out on real field measurements in an industrial plant where ferroresonance occurs in the power factor correction (PFC) system at the detuned reactor. The three-phase ferroresonance analysed in this paper is an extremely rare phenomenon that has never been reported in this type of configuration. The measurement results have shown that in this type of configuration the high harmonic distortion is a necessary condition for ferroresonance to occur. In such conditions, switching on the capacitor stage triggers the ferroresonance with quasi-periodic oscillations supported by the medium voltage grid. The main contribution is the analysis of the three-phase ferroresonance in the detuned PFC system and the influence of the harmonics on the occurrence of the ferroresonance in such a case. The possible solutions to this problem and recommendations to avoid this phenomenon are discussed.


2021 ◽  
Vol 1916 (1) ◽  
pp. 012140
Author(s):  
M Shanmugapriya ◽  
Aarim C Sijini ◽  
V T Srinivas ◽  
M Karthick ◽  
S Pavan

2014 ◽  
Vol 7 (4) ◽  
pp. 861-867 ◽  
Author(s):  
Nha Quang Trong ◽  
Huang‐Jen Chiu ◽  
Yu‐Kang Lo ◽  
Chin‐Yu Lin ◽  
Mohammed Mahmood Alam

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