数据驱动的风光场站次同步振荡多机协同阻尼控制方法  

Data-Driven Multi-Machine Cooperative Damping Control for Wind and Photovoltaic Plants Restraining Sub-Synchronous Oscillation

作　　者：甄永赞 狄依容 胡永强 高本锋 Zhen Yongzan;Di Yirong;Hu Yongqiang;Gao Bengfeng(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University,Beijing 102206 China)

机构地区：[1]新能源电力系统全国重点实验室(华北电力大学),北京102206

出　　处：《电工技术学报》2024年第18期5855-5867,5898,共14页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划资助项目“响应驱动的大电网稳定性智能增强分析与控制技术”(2021YFB2400800)。

摘　　要：随着光伏、风电在电网中接入规模的快速增长,电力系统次同步振荡问题逐渐凸显。该文针对包含光伏、双馈风电机组的等效多机新能源场站,提出一种数据驱动的抑制次同步振荡的多机协同阻尼控制方法。首先,结合新能源并网系统的结构与次同步振荡阻尼方法,确定了阻尼控制器信号的输入、输出位置。其次,将次同步振荡场景下的新能源场站等效多机并网系统简化为多输入单输出系统,基于紧格式动态线性化理论,提出了适合光伏、风电多机协同的无模型自适应次同步振荡阻尼控制方法,并对控制参数进行了优化。最后,在IEEE 39节点系统增加新能源接入场景中进行测试,阻抗频率分析与仿真结果均体现出该控制方法能有效提升系统的阻尼。在考虑阻尼控制器投入时间、新能源场站规模、风光出力占比等不同的情况下,验证了该控制方法的有效性和适应性。该控制方法对振荡频率的偏移不敏感,并对系统的大小扰动具有较强的适应能力,体现出良好的次同步振荡阻尼性能。With the rapid growth of photovoltaic and wind power’s access scale in the power grid,the problem of sub-synchronous oscillation(SSO)in the power system has become increasingly prominent.At present,the design scheme of new energy sub-synchronous damping control(SSDC)is mainly based on the model-driven control method,which relies on the accurate system state equation.However,the power system has time-varying and nonlinear characteristics,and the existing SSDC controller for new energy has limited applications,making it difficult to adapt to complex and changeable operating conditions.Therefore,finding a new strategy to break the barriers in damping control is urgent.At the same time,the existing literature has not explored the multi-machine equivalent model with multiple new energy types.According to previous engineering experience and analysis,the input and output signals of the multi-machine cooperative damping controller are selected.The feedback signal is selected as the grid-connected voltage of the new energy station,and the input position is selected as the inner d-axis of the inverter of the photovoltaic and double-fed wind farms.Then,for a new energy station containing multiple photovoltaic power stations and multiple wind turbines,in the process of designing the SSDC controller,it is similarly equivalent to a multi-input single-output system,and a model-free adaptive control(MFAC)algorithm for multi-machine coordination is designed.The parameters of the simulation system and the controller are designed,and the controller parameters are optimized by the simplex method.Finally,the impedance frequency scan analysis and simulation are carried out in the IEEE 39-node system connected to the new energy station through serial compensation,and the effectiveness of the multi-machine cooperative damping strategy is verified.The following conclusions can be drawn.(1)Impedance frequency analysis shows that the damping control method can effectively reshape the impedance of the new energy station system and signifi

关 键 词：无模型自适应阻尼控制 次同步振荡 新能源场站 协同控制 数据驱动 

分 类 号：TM712[电气工程—电力系统及自动化]