新型换流变压器及其滤波系统的数学模型与仿真计算

简要论述了新型换流变压器及其滤波系统的工作原理;从多绕组变压器原理出发, 以磁势平衡方程、绕组连接方程、端口输出方程和电压传递方程为基础, 推导出该变压器在不接入滤波支路和接入滤波支路两种条件下的数学模型,实验验证该模型正确,为对新系统后续各种研究打下了坚实的基础;对拟建的直流输电研究开发平台在设计参数的基础上,进行了计算机仿真研究,仿真结果表明,新型换流变压器及其滤波系统原理正确,滤波效果好,平台参数选择合理,新系统具有良好的应用前景.

Mathematical Model and Simulation Calculation of New-Type Converter Transformer and Its Filtering System

The operating principle of new-type converter transformer and its filtering system is described in this paper; the mathematical models of the new transformer under the two conditions with and without filter branches are established according to the theory of multi-winding transformer and based on the magnetic force balance equations, winding connection equations, output-port equations and voltage transfer equations. The reliability of the mathematical model is verified by experiments. It is the foundation for other studies of the new system; the computer simulation results from the building DC transmission system exploitation platform based on the designed parameters shows that the theoretical analysis of new-type converter transformer and its filtering system is correct, parameters of the platform are proper, and the filtering equipments work effectively, it has a good application prospect.