generator terminal

Excitation system maintains generator terminal voltage at a stable level by adjusting excitation voltage of the generator.

励磁系统通过调节发电机的励磁电压，维持机端电压处在一个稳定的水平。

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Major objectives are to improve power system stability and to guarantee generator terminal regulation accuracy. In this paper, based on nonlinear optimal predictive ( NOPC) theory, a novel multi-objective excitation controller with closed-form analytic solution control law is presented.

以提高电力系统稳定性和维持机端压电静态调节精度为目标，基于非线性最优预测控制理论，首次设计出具有闭合的解析形式控制律的非线性励磁控制器。

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Initial control mode was so-called proportion regulation and PID regulation which are implemented according to generator terminal voltage deviation.

最初的控制方式是按发电机端电压误差来实现的所谓比例调节和比例-微分-积分调节方式。

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Considering the rotor inertia and ignoring network ( including the stator windings) transient, the generator terminal voltage vector is synchronous with network, and much faster than the rotor angle in change after disturbing shown by the simulation.

考虑到扰动后转子的惯性，忽略电网（包括定子绕组）暂态，则机端电压矢量是与电网状态准同步的。仿真也表明，扰动后其变化远远快于转子角变化。

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Therefore generator terminal voltage vector is selected as quasi-synchronous reference axis relative to rotor, and the generator model in two reference frames is established.

故选择机端电压矢量作为转子准同步参考轴，建立了基于单机二系坐标的发电机模型。

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If the fault takes place on the generator terminal, PEBS method is adopted to determine the critical energy, else BCU method is adopted to determine the critical energy.

该方法以故障点是否发生于机端为标记，若是，则采用PEBS方法确定临界能量；若否，则采用BCU确定临界能量。

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