Rotor Angle Stability Analysis Using Normal form Method with High Penetrations of Renewable Energy Sources-Energy Index for Multi-Swing Stability

2018 ◽  
Author(s):  
Hiroyuki Amano ◽  
Akihiko Yokoyama
Keyword(s):  
Renewable Energy ◽  
Stability Analysis ◽  
Normal Form ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Index ◽  
Angle Stability ◽  
Normal Form Method ◽  
Rotor Angle ◽  
Rotor Angle Stability

scholarly journals Converter-driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

2021 ◽  
Author(s):  
Jianqiang Luo ◽  
Yiqing Zou ◽  
Siqi Bu
Keyword(s):  
Renewable Energy ◽  
Stability Analysis ◽  
Power Systems ◽  
Power System ◽  
Dynamic Models ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Power Electronic ◽  
Modal Interaction ◽  
Hybrid Renewable Energy

Various renewable energy sources such as wind power and photovoltaic (PV) have been increasingly integrated into the power system through power electronic converters in recent years. However, power electronic converter-driven stability issues under specific circumstances, for instance, modal resonances might deteriorate the dynamic performance of the power systems or even threaten the overall stability. In this paper, the integration impact of a hybrid renewable energy source (HRES) system on modal interaction and converter-driven stability is investigated in an IEEE 16-machine 68-bus power system. Firstly, an HRES system is introduced, which consists of full converter-based wind power generation (FCWG) and full converter-based photovoltaic generation (FCPV). The equivalent dynamic models of FCWG and FCPV are then established, followed by the linearized state-space modeling. On this basis, converter-driven stability analyses are performed to reveal the modal resonance mechanisms of the interconnected power systems and the modal interaction phenomenon. Additionally, time-domain simulations are conducted to verify effectiveness of dynamic models and support the converter-driven stability analysis results. To avoid detrimental modal resonances, an optimization strategy is further proposed by retuning the controller parameters of the HRES system. The overall results demonstrate the modal interaction effect between external AC power system and the HRES system and its various impacts on converter-driven stability.

scholarly journals Improvement of bus voltage profiles of Nigerian power network in the presence of Static Synchronous Compensator (STATCOM) and Doubly Fed Induction Generator (DFIG)

2020 ◽  
Vol 39 (1) ◽  
pp. 228-237
Author(s):  
I.B. Anichebe ◽  
A.O. Ekwue
Keyword(s):  
Renewable Energy ◽  
Stability Analysis ◽  
Power System ◽  
Power Flow ◽  
Voltage Stability ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Load Flow ◽  
Energy Sources ◽  
Power Network

Frequent blackouts and unstable supply of electricity show that the  voltage instability problem has been one of the major challenges facing the power system network in Nigeria. This study investigates the voltage stability analysis of the Nigerian power network in the presence of renewable energy sources; FACTS device is used as a voltage controller. A 330kV, 28-bus power system network was studied using the PSS/E software-based Newton-Raphson load-flow technique. The results show that 10 out of the 28 buses had voltages lying below the statutory limit of 0.95 ≤ 1.05 p.u. The application of STATCOM and DFIG devices on two of the weakest buses restored the voltages to acceptable statutory limits. The total active and reactive power losses were reduced to 18.76% and 18.82% respectively. Keywords: Voltage stability analysis; Integration of renewable energy sources; FACTS controllers, Reactive Power, Power Flow.

scholarly journals Stability Analysis of Isolated Hybrid Microgrid for Village Electrification

2018 ◽  
Vol 7 (2.23) ◽  
pp. 235 ◽  
Author(s):  
Kuldip Singh ◽  
Dr M. Narendra Kumar ◽  
Dr Satyasis Mishra
Keyword(s):  
Renewable Energy ◽  
Stability Analysis ◽  
Renewable Energy Sources ◽  
Vital Role ◽  
System Stability ◽  
Energy Sources ◽  
Main Concern ◽  
Hybrid Microgrid ◽  
Voltage Deviation ◽  
The Stability

The village electrification is the main concern for government of India. The isolated Hybrid Microgrid with renewable energy sources has been growing rapidly for village electrification and it is going to play vital role for 100% electrification in rural area by 2020. For planning and designing of isolated hybrid microgrid the power system stability is major parameter and its main concern due to instability in load demand as well as in generation from renewable energy sources.  For renewable energy sources, the controlling of frequency and voltage deviation is a great challenge. This paper is carry out the stability analysis for PV-Biomass based isolated hybrid microgrid on different load and generation conditions and carry out the effect on frequency stability 

scholarly journals Converter-Driven Stability Analysis of Power Systems Integrated with Hybrid Renewable Energy Sources

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4290
Author(s):  
Jianqiang Luo ◽  
Yiqing Zou ◽  
Siqi Bu ◽  
Ulas Karaagac
Keyword(s):  
Renewable Energy ◽  
Stability Analysis ◽  
Power Systems ◽  
Power System ◽  
Dynamic Models ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Power Electronic ◽  
Modal Interaction ◽  
Hybrid Renewable Energy

Renewable energy sources such as wind power and photovoltaics (PVs) have been increasingly integrated into the power system through power electronic converters in recent years. However, power electronic converter-driven stability has issues under specific circumstances, for instance, modal resonances might deteriorate the dynamic performance of the power systems or even threaten the overall stability. In this work, the integration impact of a hybrid renewable energy source (HRES) system on modal interaction and converter-driven stability was investigated in an IEEE 16-machine 68-bus power system. In this paper, firstly, an HRES system is introduced, which consists of full converter-based wind power generation (FCWG) and full converter-based photovoltaic generation (FCPV). The equivalent dynamic models of FCWG and FCPV are then established, followed by linearized state-space modeling. On this basis, converter-driven stability analysis was performed to reveal the modal resonance mechanisms between different renewable energy sources (RESs) and weak grids in the interconnected power systems and the multi-modal interaction phenomenon. Additionally, time-domain simulations were conducted to verify the effectiveness of dynamic models and support the converter-driven stability analysis results. To avoid detrimental modal resonances, a multi-modal and multi-parametric optimization strategy is further proposed by retuning the controller parameters of the multi-RESs in the HRES system. The overall results demonstrate the modal interaction effect between the external AC power system and the HRES system and its various impacts on converter-driven stability.

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.

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.

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