摘要
采用拉氏变换精确推导出适用于瞬时过渡阶段和稳态阶段的TCSC回路中电容器、电抗器和晶闸管元件的电压和电流数学表达式，再采用傅里叶分析进一步导出了TCSC基波阻抗和晶闸管触发角之间精确的数学关系。利用电磁暂态程序（EMTP）验证了TCSC回路数学分析的正确性。此外，建立了带有微机控制的完整的TCSC动模试验装置，并通过动模试验进一步同TCSC回路的数学分析和仿真结果作比较。动模试验的结果与理论分析和仿真的结论较好地吻合，且证实了数学分析和数字仿真中采用线路电流保持正弦假设的合理性。
More comprehensive mathematical equations of TCSC circuit for any period (including the whole transient processfrom firing the thyristors to a steady state) and for the steady state relating to the voltages and currents of the capacitor,inductor and thyristor components are precisely developed by using Laplace transformation. And the accurate mathematicalrelationship between the fundamental impedance of TCSC and the firing angle of the thyristors is further derived by usingFourier analysis. The validity of the mathematical analysis is demonstrated by using the electro-magnetic transient program(EMTP) digital simulations. Furthermore. a whole model system for TCSC dynamic simulation test including the actualmicroprocessor-based control hardware is constructed to compare with and verify. the mathematical analysis and EMTPsimulation. The test results agree well with the analytical and simulation results and clarify the validity of the assumption thatthe line current keeps sinusoidal. which is adopted in both the mathematical analysis and the EMTP digital simulations.
出处
《电力系统自动化》
EI
CSCD
北大核心
1999年第6期31-35,共5页
Automation of Electric Power Systems
基金
国家自然科学基金!59637050
上海市教育委员会重点学科科研项目
关键词
串联电容补偿
交流输电系统
晶闸管控制
series capacitor compensation flexible alternating current transmission system (FACTS) thyristor controlledseries compensation (TCSC) electro-magnetic transient program (EMTP) dynamic simulation test
