scholarly journals Pengaruh Penggunaan Kapasitor Bank pada Penyulang Kota di PT. PLN (Persero) Rayon Meulaboh Kota

2020 ◽  
Vol 1 (2) ◽  
pp. 21-28
Author(s):  
Haimi Ardiansyah
Keyword(s):  
Electric Power ◽  
Power Factor ◽  
Power Plants ◽  
Reactive Power ◽  
Capacitor Bank ◽  
Active Power ◽  
Electrical System ◽  
Capacitor Banks ◽  
Absolute Requirement ◽  
Electric Supply

Haimi Ardiansyah Akademi Komunitas Negeri Aceh Barat _________________________ Abstract Penelitian ini membahas tentang pengaruh penggunaan kapasitor bank pada penyulang kota di PT. PLN (Persero) Rayon Meulaboh Kota. Pendistribusian tenaga listrik yang stabil adalah syarat mutlak yang harus dipenuhi PT. PLN (Persero) dalam menjawab kebutuhan konsumen. Bertambahnya beban yang bersifat induktif akan berpengaruh pada penurunan nilai faktor daya pada sistem kelistrikan. Selanjutnya kondisi ini juga akan membutuhkan daya reaktif yang sangat besar sehingga pembangkit listrik harus menyalurkan daya yang lebih besar. Salah satu upaya untuk memperbaiki faktor daya adalah dengan menambahkan beban kapasitif. Perbaikan faktor daya pada penyulang kota dengan menggunakan kapasitor bank bertujuan untuk meningkatkan daya aktif sehingga mendekati dengan daya semu yang diproduksi PT. PLN. Penggunakan kapasitor bank ini diharapkan mampu menurunkan daya reaktif dan memperbaiki faktor daya pada penyulang kota. Keywords: Daya Listrik, Daya Reaktif, Faktor daya, Kapasitor Bank __________________________ Abstrak The study discusses the effect of installing bank capacitor on city electric feeder at PT. PLN (Persero) Rayon Meulaboh Kota. Stable electric supply is an absolute requirement that must be met by PT. PLN (Persero) in answering consumer needs. The increase of inductive loads will affect the decrease power factor value in the electrical system. Furthermore, this condition will also require a very large reactive power so that power plants have to supply more electric power. Installing capacitive loads is one of the best options in improving the power factor. The improvement of power factor in city feeders using capacitor banks aims to increase the active power to get close to the apparent power which is produced by PT. PLN (Persero). In short, the use of capacitor banks is expected to reduce reactive power and improve the power factor in city feeders. Kata Kunci: Electric Power, Reactive Power, Power Factor, Capacitor Bank __________________________

scholarly journals Analisis Injeksi Daya Reaktif Untuk Memperbaiki Faktor Daya Pada Line Instalasi Listrik Gedung Workshop AK-Manufaktur Bantaeng

2021 ◽  
Vol 7 (1) ◽  
pp. 1-4
Author(s):  
Hermansyah Hermansyah
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Capacitor Bank ◽  
Active Power ◽  
Analysis Method ◽  
Electrical System ◽  
Power Injection ◽  
Electrical Installation

This research is a case study, namely the electrical installation system for AK-Manufacturing Bantaeng fabrication workshops. This study aims to improve the value of cos φ (power factor) from 0.75 to 0.97 and to determine the capacity of the capacitor bank that will be installed on the electrical installation line of the AK-Manufacturing Bantaeng Fabrication Machine workshop building. The problem that occurs is the low value of cos φ (power factor) in the installed electrical system which causes the installed active power to be not maximal. For this reason, a capacitor bank with an adjusted capacity value is needed to provide reactive power injection so that the value of cos φ can be increased from 0.75 to 0.97. This study uses an analysis method to determine the value of reactive power to be injected into the electrical installation system. The results of this study indicate that the required reactive power injection capacity is 12 KVar or 12,000 Var. This value is sufficient to improve the power factor from 0.75 to 0.97. This means that the electrical installation system is more optimal.

scholarly journals Modeling and Simulation of the Anticipated Effects of the Synchronous Condenser on an Electric-Power Network with Participating Wind Plants

2018 ◽  
Vol 10 (12) ◽  
pp. 4834 ◽  
Author(s):  
Famous Igbinovia ◽  
Ghaeth Fandi ◽  
Ibrahim Ahmad ◽  
Zdenek Muller ◽  
Josef Tlusty
Keyword(s):  
Electric Power ◽  
Power Plants ◽  
Reactive Power ◽  
Short Circuit ◽  
Assessment Method ◽  
Active Power ◽  
Power Network ◽  
Electricity Grid ◽  
Systematic Assessment ◽  
Synchronous Condenser

Installing a synchronous condenser (SC) onto an electricity grid can assist in the areas of reactive power needs, short-circuit strength, and, consequently, system inertia and guarantees better dynamic voltage recovery. This paper summarizes the practical potential of the synchronous condenser coordinated in an electric-power network with participating wind plants to supply reactive power compensation and injection of active power at their point of common coupling; it provides a systematic assessment method for simulating and analyzing the anticipated effects of the synchronous condenser on a power network with participating wind plants. A 33-kV power line has been used as a case study. The results indicate that the effect of the adopted synchronous condenser solution model in the MATLAB/Simulink environment provides reactive power, enhances voltage stability, and minimizes power losses, while the wind power plants provide active power support with given practical grid rules.

scholarly journals Analisis Perencanaan Capacitor Bank Untuk Perbaikan Faktor Daya Pada Pusat Perbelanjaan Blitar Square

2021 ◽  
Vol 8 (3) ◽  
pp. 59-64
Author(s):  
Sulistyowati Sulistyowati ◽  
Muhammad Fahmi Hakim ◽  
Heri Sungkowo ◽  
Ikfi Asmaul Husna
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Capacitor Bank ◽  
Shopping Center ◽  
Initial Value ◽  
Average Value ◽  
Capacitor Banks ◽  
Calculation Results ◽  
Quality Of Electric Power ◽  
The Cost

Power factor is the ratio between active power (W) and apparent power (VA). In an electrical installation, the quality of electric power can be said to be good if the value of the power factor is above a predetermined standard of 0.85 according to the Minister (ESDM) Number 30 of 2012 [1]. From the research that has been done at the Blitar Square Shopping Center, it was found that the power factor value is still below the standard with an average value of 0.711. With the low power factor value, this shopping center gets a penalty from PT. PLN (Persero) due to the use of reactive power. Therefore, it is necessary to make efforts to improve the power factor by installing a capacitor bank. The installation of this capacitor bank is expected to be able to increase the power factor value with a power factor target of 0.98 and reduce the charge for reactive power usage penalties. The calculation results show that global compensation requires 12 capacitor banks with a rating of 10.4 kVAR, while sectoral compensation on the chiller load panel requires 7 capacitor banks with a rating of 10.4 kVAR and the foodmart load panel requires a capacitor bank with a rating of 10. 4 kVAR is 6 pieces. In simulating the installation of a capacitor bank using the ETAP application, it is known that the installation of a capacitor bank can increase the power factor value. In addition, the installation of a capacitor bank also results in an increase in the voltage value in the system, this voltage increase is still below the permissible standard of ± 5%. The simulation of installing a capacitor bank on global compensation can improve the power factor value from 72.99% to 96.97%, with a voltage increase of 0.479% from the initial value of 397 V to 398.9 V, and a decrease in the current value of 24.645% from the initial value. 330.7 A to 249.2 A. While the simulation of installing a capacitor bank in sectoral compensation can improve the power factor value from 72.99% to 93.57%, with a voltage increase of 0.401% from the initial value of 397 V to 398.6 V , and a decrease in the value of current by 21.593% from the initial value of 330.7 A to 258.1 A. The cost of installing a capacitor bank in global compensation was Rp. 189,897,500 while the sectoral compensation is Rp. 211.305.600. It can be concluded that the installation of a capacitor bank using the global compensation method is more effective.

scholarly journals Optimization of the Thyristor Controlled Phase Shifting Transformer using PSO Algorithm

2018 ◽  
Vol 8 (6) ◽  
pp. 5472 ◽  
Author(s):  
Hadi Suyono ◽  
Rini Nur Hasanah ◽  
Paramita Dwi Putri Pranyata
Keyword(s):  
Power Plants ◽  
Reactive Power ◽  
Capacitor Bank ◽  
Pso Algorithm ◽  
Phase Shifting ◽  
Static Var Compensator ◽  
Voltage Profile ◽  
Power Losses ◽  
Abc Algorithm ◽  
Capacitor Banks

The increase of power system demand leads to the change in voltage profile, reliability requirement and system robustness against disturbance. The voltage profile can be improved by providing a source of reactive power through the addition of new power plants, capacitor banks, or implementation of Flexible AC Transmission System (FACTS) devices such as Static VAR Compensator (SVC), Unified Power Flow Control (UPFC), Thyristor Controlled Series Capacitor (TCSC), Thyristor Controlled Phase Shifting Transformer (TCPST), and many others. Determination of optimal location and sizing of device injection is paramount to produce the best improvement of voltage profile and power losses reduction. In this paper, optimization of the combined advantages of TCPST and TCSC has been investigated using Particle Swarm Optimization (PSO) algorithm, being applied to the 30-bus system IEEE standard. The effectiveness of the placement and sizing of TCPST-TCSC combination has been compared to the implementation of capacitor banks. The result showed that the combination of TCPST-TCSC resulted in more effective improvement of system power losses condition than the implementation of capacitor banks.  The power losses reduction of 46.47% and 42.03% have been obtained using of TCPST-TCSC combination and capacitor banks respectively. The TCPST-TCSC and Capacitor Bank implementations by using PSO algorithm have also been compared with the implementation of Static VAR Compensator (SVC) using Artificial Bee Colony (ABC) Algorithm. The implementation of the TCSC-TCPST compensation with PSO algorithm have gave a better result than using the capacitor bank with PSO algorithm and SVC with the ABC algorithm.

scholarly journals Effect of Symmetrically Switched Rectifier Topologies on the Frequency Regulation of Standalone Micro-Hydro Power Plants

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3201
Author(s):  
Henry Bory ◽  
Jose L. Martin ◽  
Iñigo Martinez de Alegria ◽  
Luis Vazquez
Keyword(s):  
Power Factor ◽  
Power Plants ◽  
Reactive Power ◽  
Alternating Current ◽  
Frequency Regulation ◽  
Hydro Power ◽  
Major Energy Source ◽  
Hydro Power Plants ◽  
Electronic Load ◽  
Ac Converters

Micro-hydro power plants (μHPPs) are a major energy source in grid-isolated zones because they do not require reservoirs and dams to be built. μHPPs operate in a standalone mode, but a continuously varying load generates voltage unbalances and frequency fluctuations which can cause long-term damage to plant components. One method of frequency regulation is the use of alternating current-alternating current (AC-AC) converters as an electronic load controller (ELC). The disadvantage of AC-AC converters is reactive power consumption with the associated decrease in both the power factor and the capacity of the alternator to deliver current. To avoid this disadvantage, we proposed two rectifier topologies combined with symmetrical switching. However, the performance of the frequency regulation loop with each topology remains unknown. Therefore, the objective of this work was to evaluate the performance of the frequency regulation loop when each topology, with a symmetrical switching form, was inserted. A MATLAB® model was implemented to simulate the frequency loop. The results from a μHPP case study in a small Cuban rural community called ‘Los Gallegos’ showed that the performance of the frequency regulation loop using the proposed topologies satisfied the standard frequency regulation and increased both the power factor and current delivery capabilities of the alternator.

Reactive Power Compensation for Unbalanced Fluctuating Loads by Using Two-Dimensional Space Vector and a Static Var Compensator

2014 ◽  
Vol 533 ◽  
pp. 397-400 ◽  
Author(s):  
Chi Jui Wu ◽  
Yu Wei Liu ◽  
Shou Chien Huang
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Dimensional Space ◽  
Measurement Data ◽  
Power Source ◽  
Active Power ◽  
Two Dimensional ◽  
Static Var Compensator ◽  
Space Vector ◽  
Three Phase

To modify the power factor and balance the three-phase currents simultaneously, this paper proposes the instantaneous compensator to calculate the compensation current. The instantaneous compensator utilizes two-dimensional instantaneous space vector and setting the active power as a constant for each cycle which can improve power quality effectively. Moreover, the instantaneous compensator requires an independent power source, whose capacity can be reduce by using a static var compensator (SVC). An SVC does not interfere with the capability of the instantaneous compensator. Field measurement data were analyzed. Simulation results confirmed the feasibility of correcting the power factor and balancing load currents simultaneously using the proposed method.

Analysis on Unbalance Protection of SCB

2013 ◽  
Vol 341-342 ◽  
pp. 1423-1428
Author(s):  
Xiao Ping Xiong ◽  
Jing Jie Hu ◽  
Qiang Fu
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Simulation Analysis ◽  
Capacitor Bank ◽  
Relay Protection ◽  
Reactive Power Compensation ◽  
Single Star ◽  
Capacitor Banks ◽  
Shunt Capacitor ◽  
Theory Calculation

Shunt capacitor is a main measure to reactive power compensation of power system, which has the advantages of flexibility and economy. In order to guarantee the safety of shunt capacitor, the methods for protecting against over-voltage, under-voltage, over-current and unbalance in circuits according to the different operation modes are used. This paper in detail introduces unbalance protection ways under different connection modes of capacitor group. It is analyzed and calculated that the unbalanced current and voltage with the effects of fault capacitor units, components and fuses on capacitor bank as well through a case of unbalance computation of shunt capacitor banks (SCB) of ungrounded single star with external fuse. It is indicated by PSCAD simulation analysis that the result of theory calculation is the same as the simulation, which provides theory basis of setting the tripping point and alarm point of relay protection.

Photovoltaic solar system connected to the electric power grid operating as active power generator and reactive power compensator

Solar Energy ◽  
2010 ◽  
Vol 84 (7) ◽  
pp. 1310-1317 ◽  
Author(s):  
Fabio L. Albuquerque ◽  
Adélio J. Moraes ◽  
Geraldo C. Guimarães ◽  
Sérgio M.R. Sanhueza ◽  
Alexandre R. Vaz
Keyword(s):  
Solar System ◽  
Electric Power ◽  
Reactive Power ◽  
Power Grid ◽  
Active Power ◽  
Power Generator ◽  
Electric Power Grid ◽  
Reactive Power Compensator

Power Factor Detection Methods Based on Atmega128

2013 ◽  
Vol 291-294 ◽  
pp. 2340-2345
Author(s):  
Zheng Rong Jiang ◽  
Dong Ming Ma
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Sampling Methods ◽  
Reactive Power Compensation ◽  
Active Power ◽  
Detection Methods ◽  
Load Power ◽  
Reactive Current ◽  
Avr Microcontroller ◽  
Detecting Method

There are three sampling methods for reactive power compensation controller, including active power factor detecting, reactive power detecting and reactive current detecting. This paper describes the power factor detecting, which use the avr microcontroller to detect load power factor, besides, the principles and characteristics of two different detection methods are presented, the detecting accuracy is compared between the same phase detecting method and using FFT algorithm.

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