CAJ | 학술논문

对门级控制串联电容器（gate-controlled series capacitor，6CSC）在抑制电力系统次同步谐振方面的应用进行了研究。介绍了GCSC的结构及基本控制原理，分析了GCSC稳态运行特性。对基于GCSC的各种不对称串补结构抑制次同步谐振的能力做了分析，采用复转距系数法求取电气阻尼来表示不对称串补结构缓解次同步谐振的效果。针对单相GCSC设计了次同步谐振阻尼控制器，并通过基于改进的IEEE次同步谐振第1标准测试系统的仿真，验证了所设计的GCSC不对称串补结构控制器不仅能够有效地抑制次同步谐振，且减少了投入的GCSC容量和工程费用。
대문급공제천련전용기（gate-controlled series capacitor，6CSC）재억제전력계통차동보해진방면적응용진행료연구。개소료GCSC적결구급기본공제원리，분석료GCSC은태운행특성。대기우GCSC적각충불대칭천보결구억제차동보해진적능력주료분석，채용복전거계수법구취전기조니래표시불대칭천보결구완해차동보해진적효과。침대단상GCSC설계료차동보해진조니공제기，병통과기우개진적IEEE차동보해진제1표준측시계통적방진，험증료소설계적GCSC불대칭천보결구공제기불부능구유효지억제차동보해진，차감소료투입적GCSC용량화공정비용。
A new FACTS device gate-controlled series capacitor （GCSC） is investigated to mitigate subsynchronous resonance （SSR）. The fundamental structure and basic control method of GCSC is firstly presented, and the steady state characteristics of GCSC are also analyzed. Then different asymmetric compensation structures based on GCSC are proposed, and the ability of mitigating SSR of various GCSC based asymmetric compensation structures is analyzed, for this purpose, the electrical damping is solved by complex torque coefficients method to show the effect of mitigating SSR by asymmetric compensation structure. A single phase GCSC SSR damping controller is designed, and by means of the simulation based on modified IEEE SSR first benchmark the designed SSR damping controller is verified. Simulation results show that the designed GCSC SSR damping controller can effectively mitigate SSR, and the rating of GCSC as well as the construction cost can be reduced.