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 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 Utilizing the synchronous condenser for robust functioning of wind farm implanted electric grid

2019 ◽  
Vol 70 (2) ◽  
pp. 152-158
Author(s):  
Famous Oghomwen Igbinovia ◽  
Ghaeth Fandi ◽  
Juraj Kubica ◽  
Zdenek Muller ◽  
Frantisek Janicek ◽  
...  
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Voltage Regulation ◽  
Active Power ◽  
Dynamic State ◽  
Electricity Grid ◽  
Synchronous Condenser ◽  
Electricity Grids ◽  
Stability Issues ◽  
Type 3

Abstract Present-day electricity grids are equipped with sophisticated devices that allow to meet various grid code requirements. These include reactive and active power controls to ensure robust functioning of the grid. Robust operation of the electricity grid entails favourable voltage and frequency profile adjustments that can be achieved through reactive and active power controls. This study presents the synchronous condenser capability of providing voltage regulation and reactive power output, and the active power possibility path of a type-3 wind machine for dynamic state conditions and voltage stability issues. Simulations carried out in the MATLAB/Simulink environment prove the efficiency of the proposed methodology.

Reactive Power Loss Minimization on an Interconnected Electric Power Network

2018 ◽  
pp. 207-228
Author(s):  
Uche Chinweoke Ogbuefi ◽  
Boniface Onyemaechi Anyaka ◽  
Muncho Josephine Mbunwe
Keyword(s):  
Electric Power ◽  
Power Loss ◽  
Reactive Power ◽  
Power Network ◽  
Loss Minimization ◽  
Power Loss Minimization

scholarly journals Ensuring Reliable Operation of Electricity Grid by Placement of FACTS Devices for Developing Countries

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2283
Author(s):  
Atif Naveed Khan ◽  
Kashif Imran ◽  
Muhammad Nadeem ◽  
Anamitra Pal ◽  
Abraiz Khattak ◽  
...  
Keyword(s):  
Developing Countries ◽  
Reactive Power ◽  
Operating Cost ◽  
Active Power ◽  
System Stability ◽  
Planning Problem ◽  
Power Losses ◽  
Reliable Operation ◽  
Electricity Grid ◽  
Facts Devices

Flexible AC Transmission Systems (FACTS) are essential devices used for the efficient performance of modern power systems and many developing countries lack these devices. Due to the non-existence of these advanced technologies, the national grid remains weak and vulnerable to power stability issues that can jeopardize system stability. This study proposes novel research to solve issues of an evolving national grid through the installation of FACTS devices. FACTS devices play a crucial role in minimizing active power losses while managing reactive power flows to keep the voltages within their respective limits. Due to the high costs of FACTS, optimization must be done to discover optimal locations as well as ratings of these devices. However, due to the nonlinearity, it is a challenging task to find the optimal locations and appropriate sizes of these devices. Shunt VARs Compensators (SVCs) and Thyristor-Controlled Series Compensators (TCSCs) are the two FACTS devices considered for the study. Optimal locations for SVCs and TCSCs are determined by Voltage Collapse Proximity Index (VCPI) and Line Stability Index (Lmn), respectively. Particle Swarm Optimization (PSO) is employed to find the ideal rating for FACTS devices to minimize the system operating cost (cost due to active power loss and capital cost of FACTS devices). This technique is applied to IEEE (14 and 30) bus systems. Moreover, reliable operation of the electricity grid through the placement of FACTS for developing countries has also been analysed; Pakistan being a developing country has been selected as a case study. The planning problem has been solved for the present as well as for the forecasted power system. Consequently, in the current national network, 6.21% and 6.71% reduction in active and reactive power losses have been observed, respectively. Moreover, voltage profiles have been improved significantly. A detailed financial analysis covering the calculation of Operation Cost (OC) of the national grid before and after the placement of FACTS devices is carried out.

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

Reactive Power Optimization Problem Research Based on Node-Voltage-Based and Branch-Current-Based Hybrid Electric Power Network Equations

2012 ◽  
Vol 614-615 ◽  
pp. 751-760
Author(s):  
Guo You Wang ◽  
Xi Lin Zhang ◽  
Yu Shi ◽  
Yang Liu ◽  
Cheng Min Wang ◽  
...  
Keyword(s):  
Electric Power ◽  
Computational Efficiency ◽  
Optimization Problem ◽  
Reactive Power ◽  
Power Optimization ◽  
Electric Power System ◽  
Power Network ◽  
Reactive Power Optimization ◽  
Hybrid Electric ◽  
Node Voltage

The electric power system is a specific example among various networks in nature and human society, in which the network flow models and arithmetic can be applied. The node-voltage-based and branch-current-based hybrid electric power network equations are established in this paper, and the reactive power optimization problem is modeled based on the established network equations. It is respectively solved while the reactive power optimization problem is decomposed as two sub-problems, among which a sub-problem is described by quadric minimum cost flow model and another one is expressed by a linear equations. Thereby, the complexity and dimensions of reactive power optimization problem are distinctly reduced due to the two decomposed sub-problems are easy to solve. It is proved that found optimal solution is closed to global by the computational efficiency analysis. The case study is made at IEEE-30 system and it is indicated that proposed approach could improve the computational efficiency of reactive power optimization problem by comparing with traditional optimal power flow arithmetic.

Analyses and Monitoring of Power Grid

2011 ◽  
pp. 315-343
Author(s):  
Rana A. Jabbar ◽  
Muhammad Junaid ◽  
M. A. Masood ◽  
A. Bashir ◽  
M. Mansoor
Keyword(s):  
Power System ◽  
Electric Power ◽  
Reactive Power ◽  
Short Circuit ◽  
Load Flow ◽  
Power Company ◽  
Power Loading ◽  
Electric Power Company ◽  
Ground Grid ◽  
Integrated Power System

Power system analyses and monitoring of power system engineering are as essential as oxygen for human beings. This innovative approach deals with a 132 kV grid simulation in electrical transient analyzer program (ETAP). The existing power distribution system in Pakistan consists of approximately six thousand 11 kV feeders, which are mainly analyzed by software FDR-ANA (Feeder Analyses). This software does not have capability to provide comprehensive analyses for integrated power system. The case under study is 132 kV grid situated in Gujranwala electric power company (GEPCO), one of the distribution companies (DISCO’s) of Pakistan electric power company (PEPCO) which has been selected for comprehensive analyses using ETAP software. This software performs numerical calculations of large integrated power system with fabulous speed, besides generating output reports. In a developing country like Pakistan it is first time that analyses based Off-line monitoring has been made, which includes load flow, harmonic, transient, short circuit and ground grid analyses. In load flow analysis, current flowing in every branch, power factor, active and reactive power flow, line losses, voltage magnitude with angle etc. have been calculated. During harmonic analysis, distorted current and voltage waveforms along with their harmonic spectrum caused by non-linear loads have been recorded. Transient analysis has been performed to record different waveforms like variation in bus frequency, bus real power loading, bus voltage angle, and bus reactive power loading for short interval of time during transient conditions. In ground grid modeling, step, and touch potentials have been calculated in comparison with set standards. While performing short circuit analysis, all the possible short circuit faults like line to ground, double line to ground, 3-phase faults etc. on ½ cycle, 1.5 to 4 cycle, and 30 cycle networks have been performed to record the short circuit currents. These analyses have been executed using ETAP software, based upon historical data obtained from original system that will be very helpful for system security and reliability.

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