电气传动2025，Vol.55Issue(9)：25-34,10.DOI:10.19457/j.1001-2095.dqcd26153
面向快频控制的构网变流器非线性模型预测控制
Nonlinear Model Predictive Control of Grid-forming Converters for Fast Frequency Control
摘要
Abstract
As the penetration of renewable energy in power systems increases,converter-based devices are gradually becoming dominant in the grid.In terms of system frequency stability support,grid-forming converters,which can provide both active inertia support and fast frequency response services,hold great potential for application.However,due to power limitations on the DC side equipment,when there is a high demand for active power from the grid-forming converter,the DC voltage may collapse.To address this,a nonlinear model predictive control(NMPC)method was proposed to maintain DC voltage stability,prevent faults on the DC side when the grid-forming converter provides frequency support to the grid.This control method senses the frequency of the bus adjacent to the converter and tracks a predefined DC link voltage setpoint to determine the required level of active power support,and ensures quantifiable frequency support following an emergency.The design of the nonlinear MPC incorporates the current limiting and input control constraints of the grid-forming converter,enabling it to deliver maximum output power in a short period following an incident,while also avoiding DC voltage collapse.Simulations based on high-precision phasor models of Kundur 2-area 4-machine system and the IEEE 16-machine 68-node system were conducted using Matlab/Simulink.The results show that the proposed method can effectively suppress the DC voltage collapse and provide power support for fast frequency adjustment.关键词
构网型变流器/下垂控制/非线性模型预测控制/快速频率响应/滑模控制Key words
grid-forming converter(GFC)/droop control/nonlinear model predictive control(NMPC)/fast frequency response(FFR)/sliding mode control分类
信息技术与安全科学引用本文复制引用
刘震,朱子民,王小云,南东亮,段玉,吴小芳..面向快频控制的构网变流器非线性模型预测控制[J].电气传动,2025,55(9):25-34,10.基金项目
国网公司省级科技项目(B330DK240009) （B330DK240009）
自治区重大科技专项(2022A01004) （2022A01004）
