而电力系统谐波模拟装置是谐波研究的最基本工具之一。
The electric power system harmonics simulator rig is one of the basic tools which are used to study harmonics.
而电力系统同样长期存在着地理信息格式不统一的问题，这为各子系统的协同工作带来了不便。
For a long time, the power system also have the problem of no unified format in its geographic information system, which brought inconvenience to the collaborative work of its subsystems.
低频振荡是一种不利于电力系统安全和稳定运行的现象，而电力系统稳定器(PSS)可以有效抑制低频振荡。
Low frequency oscillation is harmful to power system security and stability, and as one of solutions power system stabilizer (PSS) can effectively restrain such a phenomena.
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