适用于多端柔性直流输电系统的快速电压裕度控制策略
发布时间：2019-08-06 10:03
【摘要】：为解决传统电压裕度控制器中定有功功率控制模式与定直流电压控制模式切换过慢导致的直流电压控制缓慢问题,提出了一种快速电压裕度控制策略。通过设置与直流电压偏差相关的权衡系数来调节裕度控制器的控制模式,其控制模式的切换环节在PI控制器之前,因此在系统直流电压偏差较大时,这种方法加快了控制器的响应速度和调节速度,更加适合于对直流电压要求较高的多端柔性直流输电系统。最后在MATLAB/SIMULINK下搭建了基于模块化多电平换流器的3端柔性直流输电系统进行仿真验证,结果表明:相比于传统的电压裕度控制,该控制策略能够更快速有效地稳定系统的直流电压。
[Abstract]:In ord to solve that problem of slow direct current voltage control caused by the switching of the constant active power control mode and the constant direct current voltage control mode in the conventional voltage margin controller, a fast voltage margin control strategy is proposed. by setting the trade-off coefficient related to the DC voltage deviation to adjust the control mode of the margin controller, the switching link of the control mode is before the PI controller, so that the response speed and the adjusting speed of the controller are accelerated when the DC voltage deviation of the system is large, And is more suitable for a multi-terminal flexible direct current power transmission system with higher direct current voltage requirement. Finally, the 3-terminal flexible DC transmission system based on the modular multilevel converter is simulated and verified by MATLAB/ SIMULINK. The results show that the control strategy can more quickly and effectively stabilize the DC voltage of the system compared with the traditional voltage margin control.
【作者单位】： 青岛科技大学自动化与电子工程学院;许继电气股份有限公司;
【基金】：国家自然科学基金项目(61401244)~~
【分类号】：TM721.1
[Abstract]:In ord to solve that problem of slow direct current voltage control caused by the switching of the constant active power control mode and the constant direct current voltage control mode in the conventional voltage margin controller, a fast voltage margin control strategy is proposed. by setting the trade-off coefficient related to the DC voltage deviation to adjust the control mode of the margin controller, the switching link of the control mode is before the PI controller, so that the response speed and the adjusting speed of the controller are accelerated when the DC voltage deviation of the system is large, And is more suitable for a multi-terminal flexible direct current power transmission system with higher direct current voltage requirement. Finally, the 3-terminal flexible DC transmission system based on the modular multilevel converter is simulated and verified by MATLAB/ SIMULINK. The results show that the control strategy can more quickly and effectively stabilize the DC voltage of the system compared with the traditional voltage margin control.
【作者单位】： 青岛科技大学自动化与电子工程学院;许继电气股份有限公司;
【基金】：国家自然科学基金项目(61401244)~~
【分类号】：TM721.1
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