MMC-HVDC系统主设备参数的非线性规划设计方法

发布时间：2018-06-20 07:27

本文选题：模块化多电平换流器 + 高压直流输电　；参考：《电力系统自动化》2017年12期

【摘要】：模块化多电平换流器(MMC)已成为柔性直流输电系统的主流拓扑结构,其主设备参数的设计对系统的投资和运行性能具有决定性作用。基于模块化多电平换流器的高压直流输电(MMCHVDC)系统关键主设备参数包括联接变压器二次侧额定电压、变压器漏抗、桥臂电抗、子模块电容等,单个主设备参数的独立设计忽略了不同设备多个参数之间的耦合特性。文中构建了不同设备多个参数设计的约束方程组和目标函数,并提出了基于非线性规划法对MMC-HVDC系统主设备参数设计的整体算法,该整体算法综合考虑多个参数和不同设备设计原则之间的耦合特性,从而达到可靠的优化设计结果。最后针对某MMC-HVDC系统工程进行了参数优化设计,基于PSCAD/EMTDC的计算和仿真结果基本吻合,验证了所提算法的有效性。
[Abstract]:Modularized multilevel converter (MMC) has become the mainstream topology of the flexible DC transmission system. The design of the main equipment parameters plays a decisive role in the investment and operation performance of the system. The key main equipment parameters of HVDC system based on modularized multilevel converter include secondary rated voltage of connecting transformer, leakage reactance of transformer, reactance of bridge arm, capacitance of submodule, etc. The independent design of single main device parameters ignores the coupling characteristics between multiple parameters of different devices. In this paper, the constraint equations and objective functions for the design of multiple parameters of different equipments are constructed, and a global algorithm for the design of main equipment parameters of MMC-HVDC system based on nonlinear programming method is proposed. The whole algorithm takes into account the coupling characteristics of multiple parameters and different design principles of equipment, so as to achieve reliable optimal design results. Finally, the parameter optimization design of a MMC-HVDC system is carried out. The calculation results based on PSCAD / EMTDC are in good agreement with the simulation results, which verify the effectiveness of the proposed algorithm.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);直流输电技术国家重点实验室(南方电网科学研究院有限责任公司);
【基金】：国家自然科学基金资助项目(51507060) 中央高校基本科研业务费专项资金资助项目(2016MS07)~~
【分类号】：TM46;TM721.1

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