The impacts of the variations of the active power vacancy and other relevant parameters on the frequency dynamic process were pointed out.

指出有功缺额等相关参数的变化对系统频率动态过程的影响。

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For example, power flow, reactive power compensation, voltage stability, frequency stability, and analysis of long terms dynamic process.

比如，潮流计算、无功补偿规划、电压稳定、频率稳定及长期动态过程的分析等。

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In order to obtain the dynamic model of the process to be used by robust PID, closed-loop model identification algorithm in frequency domain is researched.

为了获得鲁棒pid参数整定所需的过程模型，进行了闭环频域模型辨识的研究。

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