同时，直流接地极关系着高压直流输电系统的安全运行，对于附近的交流系统也有影响，其中的一些问题也十分值得研究。
At the same time, problems of the DC grounding system are valuable because it is not only significant in HVDC operation but also affects the AC system nearby.
直流输电系统接地极电流对交流电网的影响分析。
Analysis on influence of ground electrode current in HVDC on AC power network.
直流接地极是直流输电系统中的一个重要组成部分，而接地极的导流系统的设计则是整个接地极最终设计成败的关键。
The DC grounding electrode is an important constituent of a DC power transmission system, and the design of its feeder system is vital for the success of the whole electrode design.
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