| 引用本文: | 汪进锋,唐爱红,郭国伟,等.分布式潮流控制器的阻尼控制研究[J].电力系统保护与控制,2023,51(10):163-171.[点击复制] |
| WANG Jinfeng,TANG Aihong,GUO Guowei,et al.Damping control with a distributed power flow controller[J].Power System Protection and Control,2023,51(10):163-171[点击复制] |
|
| 摘要: |
| 分布式潮流控制器(distributed power flow controller, DPFC)具有很好的潮流调控性能和安装运维便捷性，已在国内外多个工程进行示范应用。为分析DPFC的阻尼作用机理，基于简单电力系统，构建了含DPFC的系统方程。以表征DPFC子单元对系统调制深度的DPFC输出电压幅值和相角为控制变量，推导了含DPFC简单电力系统的线性化状态方程。构建了DPFC输出电压幅值和相角对系统发电机的电角速度增量、交轴暂态电动势以及强制空载电动势控制作用的表达式。提出了DPFC具备阻尼转速变化能力的判据，得出了当DPFC总输出电压往容性电压方向增大时，系统阻尼也会随之增大的结论。在DPFC输出电压控制环节的基础上，设计了基于相位补偿的DPFC附加阻尼控制器。仿真结果验证了所提方法可以将发散的振荡在较短时间内有效拉回新的稳定点。 |
| 关键词: 分布式潮流控制器 DPFC输出电压 阻尼作用机理 附加阻尼控制 |
| DOI：10.19783/j.cnki.pspc.221383 |
| 投稿时间：2022-08-29修订日期：2022-10-09 |
| 基金项目:湖北省重点研发计划项目资助(2022BAA101)；南方电网公司科技项目资助(GDKJXM20222475) |
|
| Damping control with a distributed power flow controller |
| WANG Jinfeng1,TANG Aihong2,GUO Guowei3,LU Zhixin3,YANG Yi2,ZHOU Wei2 |
| (1. Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China;
2. School of Automation, Wuhan University of Technology, Wuhan 430070, China;
3. Foshan Power Supply Bureau, Guangdong Power Grid Co., Ltd., Foshan 528000, China) |
| Abstract: |
| The distributed power flow controller (DPFC) has good power flow control and convenient installation and operation. This has been demonstrated and applied in many projects in China and abroad. In order to analyze the damping mechanism of a DPFC, this paper constructs the system equation with a DPFC based on a simple power system. The linear state equation of a simple power system with a DPFC is derived by taking the amplitude and phase angle of the DPFC output voltage. These represent the modulation depth of the DPFC sub-unit as control variables. The expressions of amplitude and phase angle of the DPFC output voltage for the control effect of the electric angular velocity increment of the system generator are constructed, as are the transient electromotive force of the AC shaft and the forced no-load electromotive force. The criterion that the DPFC has the ability to change the damping speed is proposed. It is concluded that when the total output voltage of the DPFC increases in the direction of capacitive voltage, the system damping will also increase. Based on the output voltage control of the DPFC, the additional damping controller of the DPFC is designed. The simulation results show that the proposed method can effectively pull the divergent oscillation back to the new stable point in a short time. |
| Key words: distributed power flow controller DPFC output voltage mechanism of damping additional damping control |
