基于MFAC附加阻尼控制器的次同步振荡抑制方法  

Sub-synchronous Oscillation Suppression Method Based on MFAC Sub-synchronous Damping Controller

作　　者：杨朋威 任正 王新宇 杨梓锋 郭创新[2] YANG Pengwei;REN Zheng;WANG Xinyu;YANG Zifeng;GUO Chuangxin(Electric Power Research Institute,State Grid East Inner Mongolia Electric Power Company Limited,Hohhot 010020,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,呼和浩特010020 [2]浙江大学电气工程学院,杭州310027

出　　处：《电力系统及其自动化学报》2023年第9期68-78,共11页Proceedings of the CSU-EPSA

基　　金：国网蒙东电力公司科技项目(526604210001,蒙东电网次同步振荡风险预警及防控技术研究与应用)。

摘　　要：为解决当前次同步振荡抑制措施中常用的传统附加阻尼控制器存在建模精度不足、适应性差等问题,本文引入了一种基于无模型自适应控制的附加阻尼控制器。该控制器采用偏格式或全格式动态线性化数据模型,通过系统I/O数据估算系统伪梯度,由预测器输出附加阻尼控制信号,作用在双馈风机转子侧变流器的q轴参考电压信号中,并提出了基于粒子群算法的控制器参数优化设计方法。仿真验证了所提控制器具有较强的适应性,在线路串补度、风速等工况条件改变时能维持良好的次同步振荡抑制效果,在所有测试工况下均优于传统附加阻尼控制器和采用紧格式动态线性化的无模型自适应控制器。To solve the problems such as insufficient modeling accuracy and poor adaptability with the traditional subsynchronous damping controller(SSDC),which is commonly used in the existing sub-synchronous oscillation(SSO)suppression measures,an SSDC based on model-free adaptive control is introduced in this paper.This controller adopts a partial or full form dynamic linearization data model and estimates the system pseudo gradient through the system I/O data.The predictor outputs an additional damping control signal,which acts on the q-axis reference voltage signal of a rotor-side converter in a doubly-fed wind turbine.In addition,an optimal design method for controller parameters based on the particle swarm optimization algorithm is proposed.Simulations verify that the proposed controller has a strong adaptability,it can maintain a satisfying SSO suppression effect when the working conditions(e.g.,line series compen⁃sation degree and wind speed)change,and it is better than the traditional SSDC and the model-free adaptive controller with compact form dynamic linearization under all test conditions.

关 键 词：次同步振荡 无模型自适应控制 附加阻尼控制器 双馈风机 偏格式动态线性化 全格式动态线性化 

分 类 号：TM76[电气工程—电力系统及自动化]