A Novel Objective Function and Analysis for Optimal SVC Parameters Design to Damping Subsynchronous Resonance
In this paper, a novel robust SVC controller is designed to damping subsynchronous resonance in power system with series capacitor compensation. A midpoint-located SVC is introduced for damping torsional oscillations and simultaneously for improving power transfer capacity. The different operation conditions are gathered to construct a set first. In this set, the formula of supplementary damping is derived based of complex torque coefficient. The problem of mitigating SSR is turned into supplying enough positive damping and the calculation is reduced compared to the normal eigenvalue methods. In order to supply positive supplementary damping, the phase characteristic and its feasible ranges of the controller are collected in the set, and the parameters are tuned to satisfied these constraints. Finally, the gain of the controller is chosen to achieve the requirement of amplitudes. Since the feasible range and this method are based of different operation conditions, the controller is robust. Eigenvalues analysis and time domain simulation under a large disturbance are considered to investigate the robustness. The study is performed on the system adapted from the IEEE First Benchmark Model. All the simulations are carried out in PSCAD/EMTDC environment.
subsynchronous resonance (SSR) Static Var Compensator (SVC) complex torque coefficient robustness supplementary damping
Zhao Xin Yu Ruoying Gao Shan
Southeast University China Electric Power Research Institute
国际会议
西安
英文
1-6
2016-09-01（万方平台首次上网日期，不代表论文的发表时间）