The design of filtering equipments at dc side of the converter substations is relative to the security and economy of the high voltage direct current (HVDC) transmission system.

换流站直流滤波装置的设计关系到高压直流输电系统的安全与经济性。

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With regards to the hardware design, we use the CPLD and DSP to control the ADS7864, which can sample the six signals of voltage and current at the same time;

硬件设计方面，根据电力系统中数据采集和处理的实际特点，用CPLD和DSP控制可对六路同时采样的高速A／D转换器ADS7864来完成六路信号的数据采集；

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With regard to the hardware design, we use the CPLD and DSPs to control the ADS7864, which can sample the six signals of voltage and current at the same time;

硬件设计方面，根据柴油发电机组数据采集和处理的实际特点，用CPLD和DSP控制对六路同时采样的高速A／D转换器ADS7864来完成六路交流电信号的数据采集；

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