scholarly journals INFLUENCE OF TCSC FACTS DEVICE ON STEADY STATE VOLTAGE STABILITY

2013 ◽  
pp. 84-94
Author(s):  
GABER EL-SAADY ◽  
MOHAMED A. A. WAHAB ◽  
MOHAMED M. HAMADA ◽  
M. F. BASHEER
Keyword(s):  
Steady State ◽  
Power Flow ◽  
Voltage Stability ◽  
Control Function ◽  
Stability Index ◽  
Flexible Ac Transmission ◽  
Voltage Dependent ◽  
Voltage Stability Enhancement ◽  
Ac Transmission ◽  
Stability Enhancement

The influence of series Flexible AC Transmission Systems (FACTS) device namely, Thyristor-Controlled Series Capacitors (TCSC) on the steady state voltage stability is the main objective of this paper. The Line stability Index LSI under excepted lines outage contingencies is used to identify the critical line which is considered as the best location for TCSC. A modal analysis is used to define the weakest bus of the studied system. The FACTS device is implemented and included into the Newton-Raphson power flow algorithm, and the control function is formulated to achieve the voltage stability enhancement goal. The analysis is preformed on standard IEEE 30 bus system. The proposed scheme are tested under different loading conditions and different nonlinear voltage dependent loads. The simulation results demonstrate the feasibility and effectiveness of the device and the proposed algorithm.

Steady-State Voltage Stability Enhancement by Using Nonlinear Participation Factor

2012 ◽  
Vol 157-158 ◽  
pp. 1016-1020
Author(s):  
Jing Zhang ◽  
Ting Ting Jiang ◽  
Sheng Wei Mei
Keyword(s):  
Steady State ◽  
Power Systems ◽  
New England ◽  
Voltage Stability ◽  
Reactive Power ◽  
Nonlinear Factor ◽  
Voltage Stability Enhancement ◽  
Bus Voltage ◽  
Stability Enhancement ◽  
Power Systems Operation

Reactive power plays a key role in the power systems operation and stability. By using theory of normal forms of diffeomorphism, this paper proposes an index of bus voltage nonlinear factor, used to measure the effect of buses to the steady-state voltage stability. In order to verify the effectiveness of the proposed method, case studies are performed using the New England 39-bus power system. At the view of steady-state voltage stability enhancement, the results show that the bus voltage nonlinear factor is an effective index. It can give the correct indication of reactive power compensation dispatch.

scholarly journals FCC Algorithm for Power Loss Diminution

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
L. Kanagasabai
Keyword(s):  
Power Loss ◽  
Voltage Stability ◽  
Fitness Function ◽  
Stability Index ◽  
Training Procedure ◽  
Power Loss Reduction ◽  
Lower Division ◽  
Voltage Stability Enhancement ◽  
Voltage Deviation ◽  
Stability Enhancement

In this work, the FCC algorithm has been applied to the power problem. Real power loss reduction, voltage deviation minimization, and voltage stability enhancement are the key objectives of the proposed work. The proposed FCC algorithm has been modeled based on the competition, communication among teams, and training procedure within the team. The solution has been created based on the team, players, coach, and substitution tactic. A preliminary solution of the problem is produced, and the initialization of the teams depends on the team’s formation with substitute tactics. Mainly fitness function for each solution is computed, and it plays an imperative role in the process of the algorithm. With the performance in the season, promotion and demotion of the teams will be there. Most excellently performed teams will be promoted to a senior division championship, and the most poorly performed team will be demoted to the top lower division league. Ideas and tactics sharing procedure, repositioning procedure, Substitution procedure, seasonal transmit procedure, Promotion and demotion procedure of a team which plays in the confederation cup has been imitated to solve the problem. Similar to an artificial neural network, a learning phase is also applied in the projected algorithm to improve the quality of the solution. Modernization procedure employed sequentially to identify the best solution. With and without voltage stability (L-index) FCC algorithm is evaluated in IEEE 30, bus system. Then the Proposed FCC algorithm has been evaluated in standard IEEE 14, 57,118,300 bus test systems without L-index. Power loss minimization and voltage stability index improvement have been achieved with voltage deviation minimization.

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