基于MPC-FC的新型电力系统调频控制策略

Frequency Control Strategy of New-Type Power System Based on MPC-FC

中文关键词:模型预测控制  模糊控制  新型电力系统  比例-微分控制环节  频率控制

keywords:model predictive control  fuzzy control  new-type power system  proportional-derivative control link  frequency control

中文摘要:针对负荷功率随机跃变造成系统频率快速波动的问题，提出一种基于模型预测控制-模糊控制（model predictive control-fuzzy control，MPC-FC）的新型电力系统调频控制策略。首先，基于模型预测控制理论，建立新型电力系统状态空间方程，并以频率偏差最小化为结果建立目标函数，同时引入比例-微分控制环节，优化双馈式抽水蓄能机组的调频出力，抑制频率快速波动；其次，采用模糊控制理论对风电机组进行调频控制，增加风机调频深度；最后，在某仿真平台对所提控制策略进行验证。仿真结果表明，所提策略能够有效降低系统频率偏差及其变化速率，实现新能源机组与传统机组有功出力优化，提高新型电力系统频率响应能力。

Abstract:To address rapid system frequency fluctuations caused by random load jumps，a novel power system frequency regulation control strategy based on model predictive control-fuzzy control （MPC-FC） is proposed. Firstly，based on the model predictive control theory，a new power system state-space equation is established，and an objective function aimed at minimizing the system frequency deviation is constructed. A proportional-derivative control link is simultaneously introduced to optimize the active power output for frequency regulation of doubly-fed pumped storage units and suppress rapid frequency fluctuations. Secondly，fuzzy control theory is adopted to enhance the frequency regulation control of wind turbines，thereby increasing their frequency regulation depth. Finally，the control strategy proposed was validted on the simulation platform. The simulation results show that the proposed strategy significantly reduces system frequency deviation and its rate of change. It effectively optimizes the active power output of both new energy units and traditional units，significantly improving the frequency response capability of the new power system.