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设计了一种新型的基于极坐标二值模糊逻辑规则的模糊逻辑二级电压控制器。该控制器有效地将模糊逻辑规则和二次电压控制相结合 :将引导节点的电压偏差及其微分作为模糊逻辑控制规则的前项输入 ,与规则作用后 ,推理出相应的电压控制信号 ,然后引入比例积分器 ,得到区域无功控制信号 ,通过发电机的励磁控制 ,实现对引导节点电压的控制。该控制器通过引入控制发电机的参与因子 ,实现了区域内各控制发电机之间的相互协调和补充。以 New England39节点系统为例进行仿真计算 ,结果表明 :所设计的二级电压控制器在系统发生电压扰动的期间 ,能够从区域电压稳定的角度出发 ,调整各级电压控制器的电压参考值从而调整其无功出力 ,为系统提供所需的电压支持 ,使得系统的负荷电压水平维持在较好的状态 ,提高了系统的电压稳定性。它比常规 PID二级电压控制器具有更好的控制性能。
A new type of fuzzy logic two-stage voltage controller based on the polar coordinate binary fuzzy logic rule is designed. The controller effectively combines the fuzzy logic rules with the secondary voltage control: the voltage deviation of the leading node and its derivative are taken as the input of the fuzzy logic control rules, and then the corresponding voltage control signals are inferred The proportional integrator is introduced to obtain the regional reactive power control signal. The excitation voltage is controlled by the generator to control the voltage at the leading node. The controller realizes the coordination and supplement between the control generators in the area by introducing the participation factor of the control generator. Taking New England39 node system as an example, the simulation results show that the designed secondary voltage controller can adjust the voltage reference values of voltage controllers at all levels from the perspective of regional voltage stability during voltage disturbance of the system Adjust its reactive power output, provide the required voltage support for the system, make the load voltage level of the system maintain a good state, and improve the voltage stability of the system. It has better control performance than the conventional PID secondary voltage controller.