模块化多电平HVDC换流阀运行试验主回路数学模型及参数设计  

Mathematical Model and Parameter Design of Main Circuit for Operational Test of Modular Multi-Level HVDC Converter Valves

作　　者：吴亚楠[1] 汤广福[1] 查鲲鹏[1] 高冲[1] 贺之渊[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2013年第1期65-70,共6页Power System Technology

基　　金：基金项目:国家重点基础研究发展计划项目(973计划)(2004CB217907);国家电网公司重大科技项目(PG71-09-002)~~

摘　　要：研究了模块化多电平HVDC换流阀运行试验主回路参数的计算方法和选取原则,通过分析主回路关键设备的能量交换过程,建立了相关电气量基于开关函数的时域解析数学模型,说明了主设备参数选取对电气量特性的影响,提出了综合考虑电路试验能力和试验波形质量等因素的主回路参数设计方法。最后用PSCAD/EMTDC仿真软件对设计实例进行分析。仿真结果表明所建立的数学模型能够准确反映电气量的物理特征和影响因素,基于该方法进行运行试验主回路参数的选取能够达到预期的设计效果。The calculation method and selection principle of main circuit parameters for operational test of modular multi-level converter （MMC） HVDC converter valves are researched. Through the analysis on energy exchange process of key equipments in the main circuit, a switching function-based time-domain analytical mathematical model for related electric quantities is built to illustrate the influences of the selection of main equipment parameters on characteristics of electric quantities. A design method for parameters of main equipments, in which such factors as test capability of main circuit and quality of test waveforms are synthetically taken into account, is proposed. The design case is analyzed by simulation based on PSCAD/EMTDC software and simulation results show that the built mathematical model can reflect both physical features and influencing factors of electric quantities accurately, and based on the proposed method the expected results of main circuit parameter selection can be achieved.

关 键 词：高压直流输电 模块化多电平换流阀 运行试验 主回路 数学模型 参数设计 

分 类 号：TM72[电气工程—电力系统及自动化]