Design of non-linear Static Var Compensator based on Synergetic Control Theory

作者：Fazal Rehan^*; Choudhry M A

来源：Electric Power Systems Research, 2017, 151: 243-250.

DOI：10.1016/j.epsr.2017.05.014

• Synchronous machine
• Synergetic control
• Static var compensator
• Non-linear control

Electric power system is complex interconnected system that is subjected to rapid change in its structure. Addition of new equipment, operation close to stability limits and variation of load in summer and winter are some factors that make power system unstable and introduce electro-mechanical oscillations in the system. These oscillations, though of small magnitude often persist for long periods of time and restrict the power transfer capacity. To stabilize the power system different control strategies are used to damp the oscillations previously but all rely on linearized model of the power system.
Synergetic controller based on synergetic control theory, is a non-linear controller that forces the system toward global stability. In this paper, synergetic synthesis of the Static Var compensator (SVC) is proposed for a nonlinear model of the power system. The proposed synergetic controller is implemented in a Single Machine Infinite Bus (SMIB) system with HVDC link and the performance is compared with linear dynamic compensator based on eigen-value assignment technique.
The results provided show the effectiveness of the controller for damping system oscillations in the case of variation in load whereas the linear dynamic compensator destabilized the system.

• 出版日期2017-10