它是由于阻尼不足而造成的。
本文介绍了电网概况，分析了电网运行中存在的弱阻尼、动态电压支撑能力不足等主要问题。
Here, the general situation of South China power grid is introduced and the main problems in this grid such as weak damping and inadequate dynamic voltage supporting ability, etc.
在深入分析一维弹道修正引信三圆片阻尼修正机构（DCM）设计中不足的基础上，提出DCM改进设计的指导思想并进行了具体的改进设计，新设计的DCM克服了原DCM中的问题。
On the basis of analysing the shortcomings in our DCM design of one dimension trajectory correction fuze, this paper brings forward the guidelines of improved design, and designs the actual DCM .
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