Design of nonlinear HVDC supplementary controller based on synergetic control

作者：Zou, Yansheng; Dong, Ping

来源：Electric Power Automation Equipment, 2017, 37(4): 210-217.

DOI：10.16081/j.issn.1006-6047.2017.04.032

• Analytic expressions
• Controller parameter
• Inertia center
• Inter-area oscillations
• Multi-infeed AC/DC power system
• Pole placement methods
• Synergetic control
• Time-domain simulations

Aiming at the nonlinearity of large AC/DC power system and the inaccuracy of its model, a DC supplementary controller based on SGC(SynerGetic Control) is designed and applied to the multi-area AC/DC power system to enhance its transient stability. Appropriate macro-variable and manifold are designed according to the inertia center of each area, the analytic expression of SGC-based DC supplementary controller is deduced, and with the minimum angle frequency offset and the minimum DC power offset of areal inertia center as the objectives, the controller parameters are optimized by genetic algorithm. The designed controller is applied to a two-area AC/DC power system and a multi-infeed AC/DC power system respectively, and the time-domain simulations based on their PSCAD models demonstrate that, the proposed SGC method has better control effect in the inter-area oscillation damping than the conventional pole placement method and sliding mode control method. Furthermore, with strong robustness, the designed controller is immune to load model, operation mode and wide-area measuring signal delay, and its deduction has little dependence on the system model.
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• 单位
  华南理工大学