scholarly journals System Stability Analysis in Two Area System Integration with Three Renewable Energy Resources

2020 ◽  
pp. 26-38
Author(s):  
Pramod Kumar Meher ◽  
Mrs. Madhu Upadhyay
Keyword(s):  
Renewable Energy ◽  
Energy System ◽  
Test System ◽  
Cell System ◽  
System Stability ◽  
Renewable Energy Resources ◽  
Power Stability ◽  
Angle Stability ◽  
Rotor Angle ◽  
Rotor Angle Stability

Stability is the most important feature required in the modern electrical system. In recent years, grid stability problems have been detected due to the rapid growth of electrical and electronic loads. To study the system performance under the effect renewable energy based generating units the kundur’s two area system has been taken as test system. The direct integration of these resources were studied for various instability issues like rotor angle stability, power stability at the generating points of machines and distortion level in the voltage and current waveforms of the grid system. The work has proposed a universal dynamic system optimizing control for system stability enhancement in all the aspects. The MATLAB/SIMULINK environment being the platform for the system designing and implementation, The effects on the two area four machines system has been studied by integrating wind energy system without dynamics optimization control in area 1and then systems with both solar and wind with the dynamic optimization controller at area 2 was developed. The study is further carried to integration of a fuel cell system in area 1 as well. The rotor angle stability and power stability at the point of generation bus was also stabilized by the proposed control in the power system.

scholarly journals Qualitative and Quantitative Transient Stability Assessment of Stand-Alone Hybrid Microgrids in a Cluster Environment

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1286
Author(s):  
Kishan Veerashekar ◽  
Halil Askan ◽  
Matthias Luther
Keyword(s):  
Transient Stability ◽  
System Stability ◽  
Stability Assessment ◽  
Large Signal ◽  
Operating Modes ◽  
Stability Point ◽  
Cluster Environment ◽  
Angle Stability ◽  
Rotor Angle ◽  
Rotor Angle Stability

Neighboring stand-alone hybrid microgrids with diesel generators (DGs) as well as grid-feeding photovoltaics (PV) and grid-forming battery storage systems (BSS) can be coupled to reduce fuel costs and emissions as well as to enhance the security of supply. In contrast to the research in control and small-signal rotor angle stability of microgrids, there is a significant lack of knowledge regarding the transient stability of off-grid hybrid microgrids in a cluster environment. Therefore, the large-signal rotor angle stability of pooled microgrids was assessed qualitatively and also quantitatively in this research work. Quantitative transient stability assessment (TSA) was carried out with the help of the—recently developed and validated—micro-hybrid method by combining time-domain simulations and transient energy function analyses. For this purpose, three realistic dynamic microgrids were modelled regarding three operating modes (island, interconnection, and cluster) as well as the conventional scenario “classical” and four hybrid scenarios (“storage”, “sun”, “sun & storage”, and “night”) regarding different instants of time on a tropical partly sunny day. It can be inferred that, coupling hybrid microgrids is feasible from the voltage, frequency, and also transient stability point of view. However, the risk of large-signal rotor angle instability in pooled microgrids is relatively higher than in islanded microgrids. Along with critical clearing times, new stability-related indicators such as system stability degree and corrected critical clearing times should be taken into account in the planning phase and in the operation of microgrids. In principle, a general conclusion concerning the best operating mode and scenario of the investigated microgrids cannot be drawn. TSA of pooled hybrid microgrids should be performed—on a regular basis especially in the grid operation—for different loading conditions, tie-line power flows, topologies, operating modes, and scenarios.

scholarly journals Implementation of graphical user interface to observe and examine the frequency and rotor angle stability of a power system due to small disturbances

2020 ◽  
Vol 17 (2) ◽  
pp. 606
Author(s):  
Nur Ashida Salim ◽  
Mohamad Salehan Ab. Samah ◽  
Hasmaini Mohamad ◽  
Zuhaila Mat Yasin ◽  
Nur Fadilah Ab Aziz
Keyword(s):  
Steady State ◽  
User Interface ◽  
Power System ◽  
Graphical User Interface ◽  
Test System ◽  
Angle Stability ◽  
Rotor Angle ◽  
Rotor Angle Stability ◽  
Steady State Stability ◽  
Small Disturbances

<span lang="EN-GB">The aim of this research is to anticipate the stability status of a power system when the system is exposed to a change in frequency and rotor angle due to small disturbances. The proposed study was implemented on the IEEE Reliability Test System 1979 (IEEE RTS-79) which contains 24 buses, 38 transmission lines and 32 generators. Steady state stability limit of a system refers to the maximum amount of power that is permissible through the system without loss of its steady state stability. This research proposes the development of a Graphical User Interface (GUI) to observe the frequency and rotor angle stability due to the effect of small disturbances using the One Machine Infinite Bus (OMIB) technique. This proposed technique could ease the power system utility especially the power system operation to observe and examine the system frequency and rotor angle stability due to small disturbances. The findings from this research has proven that the proposed technique to observe the frequency and rotor angle stability due to small disturbances has successfully been developed using a GUI.</span>

scholarly journals Hybrid Power System Design for Damping Electromechanical Modes of Oscillation in Grid Connected Machines

2020 ◽  
pp. 1-12
Author(s):  
Syed Sanjar Ul Islam ◽  
Santosh kumar
Keyword(s):  
Renewable Energy ◽  
Hybrid System ◽  
Solar Pv ◽  
Pv Systems ◽  
Electromechanical Modes ◽  
Maximum Stability ◽  
Angle Stability ◽  
Rotor Angle ◽  
Rotor Angle Stability ◽  
Two Machines

Due to the natural intermittent nature of wind and solar PV, autonomous wind/PV systems for renewable energy typically require energy storage or other sources of production to form a hybrid system. in this paper objective of the designing of a grid dynamics controller equipped with IGBT based bridge structure for stabilizing various electrical parameters on the grid system while its renewable energy-based grid integration. And the controller has to be designed with modulation technique, for both voltage and current at particular frequency following stabilization which is both simple in implementation and operation. And the comparative analysis of techniques used has to be carried out with AI-based optimization algorithms for studying its effectiveness. The results of the THD % of voltage in the system having no controller was found to be 3.32 %.  in the system having adaptive neural PSO switching of grid dynamics controller, the distortion level came down to 1.96%. The hybrid system with solar wind energy was further integrated with the grid and was analyzed for the rotor angle stability in the two machines. It was concluded that out of the three controls for grid dynamics controller the artificial intelligence-based adaptive neural PSO switching was found to be best with maximum stability of machines.

Implementing a Fuzzy Logic Based Algorithm to Predict Solar and Wind Energies in a Hybrid Renewable Energy System

2015 ◽  
Vol 4 (3) ◽  
pp. 10-24 ◽  
Author(s):  
Sanaa Faquir ◽  
Ali Yahyaouy ◽  
Hamid Tairi ◽  
Jalal Sabor
Keyword(s):  
Fuzzy Logic ◽  
Renewable Energy ◽  
Wind Power ◽  
Input Parameter ◽  
Energy System ◽  
System Stability ◽  
Industrial Sectors ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System ◽  
Hybrid Renewable Energy

The use of multi sources systems of energy progressed significantly in different industrial sectors. Between all the existing sources of energy, batteries and renewable sources, such as photovoltaic and wind, contain the highest specified energy. However, solar and wind energies are not available all the time, their performance is affected by unpredictable weather changes and therefore, it is difficult to control as it is not always feasible to obtain an accurate mathematical model of the controlled system. Also, uncertainty of the wind power can affect system stability. This paper presents a computer algorithm based on fuzzy logic control (FLC) to estimate the wind and solar energies in a hybrid renewable energy system from natural factors. The wind power was estimated using the wind speed as an input parameter and the solar power was estimated using the temperature and the lighting as input parameters.

scholarly journals Prospect of renewable energy resources in Bangladesh

2021 ◽  
Vol 12 (3) ◽  
pp. 1804
Author(s):  
Mohammad Mafizur Rahman ◽  
Feroza Begum
Keyword(s):  
Renewable Energy ◽  
Energy System ◽  
Living Standards ◽  
Energy Resources ◽  
Energy Access ◽  
Renewable Energy Resources ◽  
Comprehensive Understanding ◽  
Current State ◽  
Renewable Energy System ◽  
Stable Source

<span lang="EN-GB">The objective of this paper is to provide an overview of the current state of renewable energy resources in Bangladesh, as well as to examine various forms of renewable energies in order to gain a comprehensive understanding of how to address Bangladesh's power crisis issues in a sustainable manner. Electricity is currently the most useful kind of energy in Bangladesh. It has a substantial influence on a country's socioeconomic standing and living standards. Maintaining a stable source of energy at a cost that is affordable to everyone has been a constant battle for decades. Bangladesh is blessed with a wealth of natural resources. Bangladesh has a huge opportunity to accelerate its economic development while increasing energy access, livelihoods, and health for millions of people in a sustainable way due to the renewable energy system.</span>

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