The Transient Stability of Large Scale Superconductors Cooled in Superfluid Helium

1988 ◽  
pp. 187-194 ◽  
Author(s):  
J. Waynert ◽  
Y. Eyssa ◽  
X. Huang
Keyword(s):  
Superfluid Helium ◽  
Large Scale ◽  
Transient Stability

scholarly journals Instantaneous Power Control Strategy for Voltage Improvement in Power Network Equipped by Wind Generator

2021 ◽  
Vol 54 (1) ◽  
pp. 147-154
Author(s):  
Issam Griche ◽  
Sabir Messalti ◽  
Kamel Saoudi
Keyword(s):  
Power Systems ◽  
Power Control ◽  
Wind Power ◽  
Control Strategy ◽  
Large Scale ◽  
Transient Stability ◽  
Short Circuit ◽  
Dynamical Response ◽  
Instantaneous Power ◽  
Wide Range

The uncertainty of wind power brings great challenges to large-scale wind power integration. The conventional integration of wind power is difficult to adapt the demand of power grid planning and operation. This paper proposes an instantaneous power control strategy for voltage improvement in power networks using wind turbine improving the dynamical response of power systems performances (voltage and transient stability) after fault. In which the proposed control algorithm based on a new advanced control strategy to control the injected wind power into power system. The efficiency of developed control strategy has been tested using IEEE 9 Bus. Simulation results have showed that the proposed method perform better to preserve optimal performances over wide range of disturbances for both considered scenarios studied short circuit and variable loads.

Improving Active Output Capacity of Large-Scale Wind Farm by Installation STATCOM

2012 ◽  
Vol 588-589 ◽  
pp. 574-577 ◽  
Author(s):  
Yan Juan Wu ◽  
Lin Chuan Li
Keyword(s):  
Control Strategy ◽  
Large Scale ◽  
Wind Farm ◽  
Transient Stability ◽  
Reactive Power ◽  
Feedforward Control ◽  
Wind Farms ◽  
Active Power ◽  
Utilization Efficiency ◽  
Grid Voltage

Some faults will result wind turbine generators off-grid due to low grid voltage , furthermore, large-scale wind farms tripping can result in severe system oscillation and aggravate system transient instability . In view of this, static compensator (STATCOM) is installed in the grid containing large-scale wind farm. A voltage feedforward control strategy is proposed to adjust the reactive power of STATCOM compensation and ensure that the grid voltage is quickly restored to a safe range. The mathematical model of the doubly-fed induction wind generator (DFIG) is proposed. The control strategy of DFIG uses PI control for rotor angular velocity and active power. 4-machine system simulation results show that the STATCOM reactive power compensation significantly improve output active power of large-scale wind farm satisfying transient stability, reduce the probability of the tripping, and improve the utilization efficiency of wind farms.

An Efficient Parallel Sequential Approach for Transient Stability Emergency Control of Large-Scale Power System

2018 ◽  
Vol 33 (6) ◽  
pp. 5854-5864 ◽  
Author(s):  
Guoxiao Gan ◽  
Zexiang Zhu ◽  
Guangchao Geng ◽  
Quanyuan Jiang
Keyword(s):  
Power System ◽  
Large Scale ◽  
Transient Stability ◽  
Sequential Approach ◽  
Emergency Control

Three-phase modeling for transient stability of large scale unbalanced distribution systems

1989 ◽  
Vol 4 (2) ◽  
pp. 487-493 ◽  
Author(s):  
E.B. Makram ◽  
V.O. Zambrano ◽  
R.G. Harley ◽  
J.C. Balda
Keyword(s):  
Distribution Systems ◽  
Large Scale ◽  
Transient Stability ◽  
Three Phase
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