In this paper, a new method for DC system grounding fault detecting is presented.
文中提出直流系统接地故障检测方法。
To ensure normal operation of the substation, the DC system grounding fault should be detected as quickly as possible.
为保证直流系统的正常运行，查找直流接地故障的时间应尽可能缩短。
This subject matter is very meaningful to improve the detection of DC system grounding fault and to perfect the safety and reliability of DC system.
本课题的研究对于完善直流系统接地故障检测方法，提高直流系统运行的安全性、可靠性具有特定意义。
Substation DC system grounding of substation equipment will cause damage, at the same time the substation on the safe operation of equipment to produce a great threat to.
变电站直流系统接地将会对变电站的设备造成损害，同时对变电站各设备的安全运行产生极大威胁。
The paper analyzes the method of low frequency signal injection, which is usually used to detect DC system grounding fault, and advances the method based on wavelet transforms.
分析了低频信号注入法，并且针对其缺陷提出了基于小波变换的检测方案。
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.
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。
Loop net of DC system is an important factor in the grounding fault detection.
直流系统环网是接地故障检测中的一个关键因素。
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.
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.
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。
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