scholarly journals Analysis of the dynamic effect of the electrical interconnection on the stability of the rotor angle for synchronous generators in the electric power system of Syria

2021 ◽  
Vol 23 (4) ◽  
pp. 120-133
Author(s):  
A. Alzakkar ◽  
N. P. Mestnikov ◽  
F. Alhajj Hassan ◽  
I. M. Valeev
Keyword(s):  
Power System ◽  
Electric Power ◽  
Angular Position ◽  
Dynamic Effect ◽  
Electric Power System ◽  
Power Grids ◽  
Synchronous Generators ◽  
Electrical Systems ◽  
Dynamic Representation ◽  
The Stability

This article focuses on the study and analysis of the importance of interconnections between electricity systems, which increases with greater probability due to the dependence of all countries and States on electricity and the ease of its transfer between countries in order to supplement their economic and technical benefits. THE PURPOSE. This study analyzes the dynamic impact of interconnection on circuit stability for synchronous generators in Syrian power grids. In addition, the authors of the article analyzed the dynamic effect of interaction on the stability of the angle of rotation of the rotor of synchronous generators operated in the Syrian power system through the use of dynamic modeling of the country's power system. METHODS. In the course of the study, the authors used a technique based on the dynamic representation of the power system and the construction of its nonlinear equations, followed by the use of the PSS ® E program. 230-400 kV.RESULTS. The authors of the article obtained a solution and determination of the system parameters and the separation time of the boundaries of three-phase short circuits in a 400 kV network in addition to determining the angular position of the generator circuits, and thus, its stability was checked, regardless of whether it works independently in the electric power system of Syria or is part of a network. CONCLUSION. In the course of the study, the authors obtained the following conclusions, such as: an increase in CFCT was found for generating units in the power system of Syria due to connection activation, an increase in transmitted power, which leads to an increase in the stabilization zone after a failure and before the start of connecting electrical systems to the country's power system, as well as it is necessary to conduct in-depth dynamic studies of the entire system in order to represent the effect of the connection on the parameters of the system, taking into account the increase in power.

scholarly journals Impact of micro hydro power plants on transient stability for the micro grid 20 kV system

2021 ◽  
Vol 24 (3) ◽  
pp. 1278
Author(s):  
Syarifuddin Nojeng ◽  
Syamsir Syamsir ◽  
Reny Murniati
Keyword(s):  
Power Plant ◽  
Power System ◽  
Electric Power ◽  
Transient Stability ◽  
Interconnection Network ◽  
Electric Power System ◽  
Hydro Power ◽  
Micro Grid ◽  
The Stability ◽  
The Impact

Transient stability analysis is conducted to determine the ability of the electric power system in maintaining the operating stability after a major disturbance. The disturbance can be trigger an impact on the stability of the rotor angle, voltage, and system frequency which can cause loss of synchronization. In this paper, the impact of the interconnection of the Tombolo-Pao mini hydro power plant (MHPP) on the stability of the system was analyzed by several scenarios to determine the behavior of system parameters in a 20 kV system interconnection network. This research is an implementation of regulatory provisions relating to the study of the connection to the PLN distribution network through by regulator. Based on the result of simulation study, transient stability of generators at TomboloPao power plant about 0.1 second, will not occur with network configuration according to modeling activation of anti-islanding protection of Tombolo Pao Power Plant which is set by 2 second. The simulation results show that the location of the disturbance in the electric power system has been influenced by the behavior of the power plant (synchronous generator) which can lead to the instability of the micro-hydro connected to the micro-grid system 20 kV.

scholarly journals Transformer EMF in differential equations of synchronous generators

2019 ◽  
Vol 124 ◽  
pp. 05055
Author(s):  
L.N. Tokarev
Keyword(s):  
Differential Equations ◽  
Power System ◽  
Electric Power ◽  
Synchronous Generator ◽  
Electric Power System ◽  
Synchronous Generators ◽  
Accurate Calculation

The article presents differential equations of a synchronous generator transformed according to the theory of two reactions, that is, in the axes d-q. We consider the influence of transformer EMF on transients. We prove that for the accurate calculation of transients in an electric power system it is necessary to use differential equations of the synchronous generator taking into account the transformer EMF in its stator.

scholarly journals Analisis pengaruh penambahan gardu induk Guluk-Guluk terhadap aliran daya dan profil tegangan pada sub sistem Krian Gresik

JURNAL ELTEK ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 55
Author(s):  
Rohmanita Duanaputri ◽  
Imron Ridzki ◽  
Egar Rahmat Maulana ◽  
Ayusta Lukita Wardani
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Flow ◽  
Voltage Drop ◽  
Electric Power System ◽  
Load Demand ◽  
Before And After ◽  
Voltage Frequency ◽  
The Stability ◽  
And Control

  Kestabilan suatu sistem tenaga listrik sendiri merupakan kemampuan sebuah sistem tenaga listrik dalam mempertahankan tegangan, frekuensi, dan daya di setiap bus sistem interkoneksi pada kondisi normal baik sebelum dan sesudah terjadinya gangguan. Sistem akan memasuki keadaan ketidakstabilan ketika terjadi gangguan, peningkatan permintaan beban dan adanya perubahan kondisi sistem, keadaan tersebut akan menyebabkan penurunan performa sistem tenaga listrik. Pada tahun 2015-2019 pulau madura hanya terdapat lima gardu induk, seiring dengan pertambahan kebutuhan tenaga listrik di beberapa wilayah pulau madura, untuk memperbaiki mutu dan keandalan penyaluran tenaga listrik ke konsumen, hal inilah yang mendukung proyek penambahan Gardu Induk Guluk Guluk. Gardu Induk Guluk-Guluk merupakan salah satu bagian dari sub sistem Krian Gresik. Dengan adanya penambahan Gardu Induk Guluk-Guluk tersebut akan berpengaruh terhadap aliran daya dan tegangan pada sistem tenaga listrik. Analisis dilakukan pada kondisi normal sebelum dan setelah adanya Gardu Induk Guluk-Guluk. Kondisi tegangan pada sub sistem Krian Gresik saat sebelum dan sesudah pembangunan Gardu Induk Guluk-Guluk masih memenuhi standart, namun ada beberapa bus yang mengalami penurunan tegangan dibawah 95%. Gardu Induk yang mengalami penurunan tegangan dibawah 95% sebelum pembangunan Gardu Induk Guluk-Guluk, yaitu pada Gardu Induk Bunduran, Gardu Induk Porong, dan Gardu Induk Maspion. Saat setelah pembangunan Gardu Induk Guluk-Guluk, terdapat penambahan Gardu induk yang mengalami penurunan nilai tegangan, yaitu Gardu Induk Sampang, Gardu Induk Pamekasan, Gardu Induk Guluk-Guluk, dan Gardu Induk Sumenep. Aliran daya terbesar saat terjadi penurunan tegangan adalah pada bus Bus 1 Bunduran. The stability of an electric power system itself is the ability of an electric power system to maintain the voltage, frequency, and power in each interconnecting bus system in normal conditions both before and before the disturbance. The system will enter a state of instability when there is a disturbance, an increase in load demand and a change in system conditions, this situation will cause a decrease in the performance of the electric power system. In 2015-2019 Madura Island there are five substations, along with the increasing need for energy in the Madura Island area, to improve some and control electric power, this is what supports the addition of Guluk-Guluk Substations. Guluk-Guluk Substation is one part of the Krian Gresik sub-system. With the addition of the Guluk-Guluk Substation, it will affect the flow of power and voltage in the electric power system. The analysis was carried out under normal conditions before and after the Guluk-Guluk Substation. The voltage conditions in the Krian Gresik sub-system before and before the construction of the Guluk-Guluk Substation still met the standard, but there were several buses that experienced a voltage drop below 95%. Substations that experienced a voltage drop below 95% before the construction of the Guluk-Guluk Substations, namely the Bunduran Substation, Porong Substation, and Maspion Substation. After the construction of the Guluk-Guluk Substation, there were additional substations that experienced a decrease in voltage values, namely the Sampang Substation, Pamekasan Substation, Guluk-Guluk Substation, and Sumenep Substation. The largest power flow when there is a voltage drop is on the Bus 1 Bunduran.

scholarly journals AN OVERVIEW ON POWER QUALITY ISSUES IN POWER GRIDS CONNECTED WITH NON-CONVENTIONAL ENERGY SOURCES

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Madha Chesti ◽  
Ishtiyaq Shafi Rafiqi
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Quality ◽  
Electric Power System ◽  
Power Grids ◽  
Energy Sources ◽  
The World ◽  
Non Linear ◽  
Quality Issues

The term power quality is inescapable when it comes to Electric power system. The main intent of the researchers and different organizations all over the world is to provide the consumers with quality power. Practically, it is difficult to achieve quality power as there are number of issues associated with Electric power system called as power quality problems. Harmonics, transients, use of non linear loads, interruptions etc. are the factors which cause disturbances in the electric power system and thus leads to the deterioration in the quality of power. These disturbances are the major challenges to the power quality and must be analyzed properly before mitigating them. The paper has put emphasis on the major disturbances in the power grids. The paper is also considerate about the causes and effect of these disturbances in the power grids.

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