scholarly journals Dynamic Voltage Stability Assessment in Remote Island Power System with Renewable Energy Resources and Virtual Synchronous Generator

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5851
Author(s):  
Akito Nakadomari ◽  
Ryo Miyara ◽  
Talal Alharbi ◽  
Natarajan Prabaharan ◽  
Shriram Srinivasarangan Rangarajan ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Voltage Stability ◽  
Synchronous Generator ◽  
System Stability ◽  
Stability Assessment ◽  
Remote Island ◽  
Dynamic Voltage ◽  
Dynamic Voltage Stability ◽  
Virtual Synchronous Generator

Increasing the proportion of renewable energy generations in remote island power systems is becoming essential for realizing decarbonized society. However, since inverter-connected renewable energies have different generation characteristics from conventional generators, the massive penetration can adversely affect system stability. In particular, fault events in such weak remote systems can cause fast voltage collapse, and there is a need to assess dynamic voltage stability. This study attempts dynamic voltage stability assessment using the critical boundary index (CBI) and investigates the impact of the virtual synchronous generator (VSG) on dynamic voltage stability. A remote island power system and VSG are modeled, and time-domain simulations are conducted with case studies of fault events. The simulation results show the potential of CBI to use for dynamic voltage stability assessment. Furthermore, the VSG can provide suitable power output during fault events and improve dynamic voltage stability.

scholarly journals Renewable Energy System on Frequency Stability Control Strategy Using Virtual Synchronous Generator

Symmetry ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 1697 ◽  
Author(s):  
Lingling Li ◽  
Hengyi Li ◽  
Ming-Lang Tseng ◽  
Huan Feng ◽  
Anthony S. F. Chiu
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Large Scale ◽  
Synchronous Generator ◽  
Frequency Stability ◽  
Stability Control ◽  
System Stability ◽  
Generator System ◽  
System Frequency ◽  
Virtual Synchronous Generator

This study constructs a novel virtual synchronous generator system based on a transfer function, and optimizes the parameters of the model by using the improved whale algorithm to improve the frequency control ability of virtual synchronous generator. Virtual synchronous generator technology helps to solve the problem that the integration of large-scale renewable energy generation into the power system leads to the deterioration of system frequency stability. It can maintain the symmetry of grid-connected scale and system stability. The virtual synchronous generator technology makes the inverter to have the inertia and damping characteristics of a synchronous generator. The inverter has the inertia characteristics and damps to reduce the frequency instability of high penetration renewable energy power system. The improved whale algorithm is efficient to find the best combination of control parameters and the effectiveness of the algorithm is verified by microgrid and power system. The results show that the proposed frequency coordination control scheme suppresses the frequency deviation of power system and keep the system frequency in a reasonable range.

The Research of Power System Stability Problems Caused by Integration of Large-Scale Wind Power

2013 ◽  
Vol 391 ◽  
pp. 291-294
Author(s):  
Xiao Ning Xu ◽  
Xue Song Zhou
Keyword(s):  
Power Systems ◽  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Voltage Stability ◽  
Wind Farms ◽  
Power System Stability ◽  
System Stability ◽  
Dynamic Voltage ◽  
Dynamic Voltage Stability

In recent years, wind power in China developed rappidly. More and more problems occurred with the integration of large-scale wind power. Arounding the issues of power system stability which are resulted from the integration of wind power and ite relevant technology, this paper mainly introduced the voltage stability from the angle of the definition and the classification, and analyzed power systems which contains wind farms from the angle of the research contents and methods of static and dynamic voltage stability, especially emphasizing the necessity of the bifurcation theory used in power system contains wind power.

scholarly journals Power system dynamic voltage stability affected by open-loop modal coupling between DFIG-based wind farms and IM loads

2019 ◽  
Vol 2019 (16) ◽  
pp. 2514-2519 ◽  
Author(s):  
Guoyun Su ◽  
Long Xu ◽  
Wenjuan Du ◽  
Chen Chen ◽  
Yining Ji ◽  
...  
Keyword(s):  
Power System ◽  
Voltage Stability ◽  
Wind Farms ◽  
Open Loop ◽  
System Dynamic ◽  
Modal Coupling ◽  
Dynamic Voltage ◽  
Dynamic Voltage Stability

scholarly journals Effect of Grid-Connected Photovoltaic Generator on Dynamic Voltage Stability in Power System

2018 ◽  
Vol 30 (2) ◽  
pp. 289-296
Author(s):  
Azah Mohamed ◽  
◽  
Zetty Adibah Kamaruzzaman ◽  
Nor Azwan Mohamed Kamari
Keyword(s):  
Power System ◽  
Voltage Stability ◽  
Dynamic Voltage ◽  
Dynamic Voltage Stability

scholarly journals Hybrid PSO-Optimized ANFIS-Based Model to Improve Dynamic Voltage Stability

2019 ◽  
Vol 9 (4) ◽  
pp. 4384-4388 ◽  
Author(s):  
D. N. Truong ◽  
V. T. Bui
Keyword(s):  
Power System ◽  
Wind Power ◽  
Voltage Stability ◽  
Wind Farm ◽  
Reactive Power ◽  
Voltage Response ◽  
Inference System ◽  
Dynamic Voltage ◽  
Dynamic Voltage Stability ◽  
Wind Power System

The objective of this paper is to perform a hybrid design for an Adaptive Neuro-Fuzzy Inference System (ANFIS) optimized by Particle Swarm Optimization (PSO) to improve the dynamic voltage stability of a grid-connected wind power system. An onshore 99.2MW wind farm using Doubly Fed Induction Generator (DFIG) is studied. To compensate the reactive power absorbed from the power grid of the wind farm, a Static VAR Compensator (SVC) is proposed. To demonstrate the performance of the proposed hybrid PSO–ANFIS controller, simulations of the voltage response in time-domain are performed in Matlab to evaluate the effectiveness of the designed controller. From the results, it can be concluded that the proposed hybrid PSO-optimized ANFIS-based model can be applied to enhance the dynamic voltage stability of the studied grid-connected wind power system.

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