轻型高压直流输电仿真研究与实验装置设计

发布时间：2018-05-14 10:20

本文选题：电压源换流器 + 前馈补偿解耦　；参考：《郑州大学》2014年硕士论文

【摘要】：新型电力电子器件在电能传输方面的应用产生了一种新的输电技术—轻型直流输电（HVDC Light）。轻型直流输电采用绝缘栅双极晶体管（IGBT）和脉宽调制技术（PWM）。与基于晶闸管阀和相控方式的传统高压直流输电相比，轻型直流输电系统的结构更简单、设备也更少，具有谐波含量低、功率控制灵活等优点。本文重点开展对轻型高压直流输电的仿真研究与实验装置的设计。为实现HVDC Light输送有功、无功功率的独立控制，在d q同步旋转坐标轴下建立了电压源换流器的状态方程，通过前馈补偿抑制交叉耦合项的干扰，采用双闭环反馈控制方案，设计了电流内环、电压与功率外环比例积分（PI）控制器，并通过Matlab/Simulink实现了功率控制、多端直流输电及向无源的负荷点供电的仿真实验。以PM75RLA120为功率单元、TMS320F2812为控制芯片设计了一个传输容量为1500VA的轻型高压直流输电实验装置。同时完成了换流电抗器、直流电容器、高通滤波器的参数计算，，信号测量与调理电路、IPM驱动与保护电路以及DSP控制电路的硬件设计。与常规DSP程序开发方法不同，本文利用Matlab-DSP集成设计环境下的工具包CCSLink和ETTIC2000由仿真模型直接生成目标代码，步骤明确、方法简单，完成了实验装置的软件设计。
[Abstract]:The application of new power electronic devices in power transmission has produced a new transmission technology-HVDC Lightlight. IGBT (Insulated Gate Bipolar Transistor) and PWM (Pulse width Modulation) are used for HVDC transmission. Compared with the traditional HVDC transmission system based on thyristor valve and phase control, the structure of the HVDC system is simpler, the equipment is less, the harmonic content is low, the power control is flexible and so on. This paper focuses on the light HVDC simulation research and the design of experimental equipment. In order to realize the independent control of active power and reactive power in HVDC Light, the state equation of voltage source converter is established under the coordinate axis of synchronous rotation of d / Q. The interference of cross coupling term is suppressed by feedforward compensation, and a double closed loop feedback control scheme is adopted. The current inner loop, voltage to power outer loop proportional integral Pi) controller is designed, and the simulation experiment of power control, multi-terminal direct current transmission and power supply to passive load point is realized by Matlab/Simulink. Using PM75RLA120 as power unit and TMS320F2812 as control chip, a light HVDC transmission experimental device with transmission capacity of 1500VA is designed. At the same time, the hardware design of converter reactor, DC capacitor, high pass filter, signal measurement and conditioning circuit and DSP control circuit are completed. Different from the conventional DSP programming method, this paper uses the toolkit CCSLink and ETTIC2000 in the Matlab-DSP integrated design environment to generate the target code directly from the simulation model. The steps are clear, the method is simple, and the software design of the experimental device is completed.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM721.1

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