分析了高压直流输电（HVDC）系统的结构和原理，建立了一个6脉冲桥HVDC系统模型并进行了仿真。

This paper analyzes the structure and principle of high voltage DC transmission(HVDC)system, builds a model of 6-impulse bridge HVDC system and makes a emulate on it.

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在讨论电压源型高压直流输电（VSC-HVDC）的控制策略中，根据所给出的拓扑结构，建立三相静止系统下的数学模型；

According to the given topology of voltage source converter based HVDC system (VSC-HVDC), three-phases mathematic model in stationary frame is established.

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建立了基于电压源换流器（VSC）的高压直流（HVDC）（VSC-HVDC）输电系统的标幺值数学模型。

The HVDC light is a new DC transmission technology based on voltage source converter(VSC)and pulse width modulation(PWM)technology.

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