大学毕业设计论文-微电网协调运行控制策略.doc

XX大学 本科学位论文 题 目：微电网协调运行控制策略 摘 要 本文主要通过进行了理论研究、仿真平台搭建，研究微电网综合协调控制策略，，仿真结果分析，为后续微电网的深入研究奠定了基础。 本文设计了 PQ 控制器、基于下垂特性的 V/f 控制器，并对逆变器输出滤波器进 行了设计。同时，针对 PI 控制器的不足，利用模型预测控制方法设计了微网中分 布式微电源逆变器的 PQ 模型预测控制策略和基于下垂特性的 V/f 模型预测控制策略， 并在 MATLAB/Simulink 中建立了仿真模型，对单个微电源分别采用 PI 控制和 MPC 控制时的不同场景进行了分析，证明了 MPC 控制器的效果。 最后，建立了微电网的模型，用风力发电机组、光伏以及蓄电池三种微电 源的模型代替直流电压源，并设计相应的控制策略，在 MATLAB/Simulink 中，搭建了整个系统的模型，分别在风机和光伏阵列出口处配置蓄电池，用于平抑并网功率并 在孤岛下提高电压和频率支撑，仿真结果验证了控制策略的可行性。 关键词：微电网；综合协调控制；风光储；逆变器；模型预测控制  Study on the Coordination Control Strategy of Wind-Solar-Storage Micro-grid Abstract This paper mainly studies the micro-grid integrated and coordinated control strategies, and, by theoretically analyzing, simulation platform construction, and simulation results analyzing, laid the foundations for subsequent in-depth study of micro-grid. In this paper, a PQ controller, a V/f controller based on droop characteristic and the inverter output filter has been designed. Meanwhile, considering PI controller’s insufficiency, the Model Predictive Control strategy was used to design the converter’s PQ model predictive control strategy and V/f model predictive control strategy based on droop characteristics, and the simulation model was established in MATLAB/Simulink. Then, by simulating a single micro-source respectively using PI controller and MPC controller in different scenes and by afterward analyzing and comparing, the effectiveness of MPC controllers was proved. After single micro-source’s integrating strategy research, the model of micro-grid with multiple micro-sources was built, and through the simulating and analyzing under 3 conditions: the micro-grid operation mode switching, cutting or adding load in island mode, cutting a micro-source in island mode, it is found that the micro-source MPC controller designed in this thesis achieved a sound power control behavior under the aforementioned three conditions. Meanwhile, both the micro-grid’s voltage and frequency were within the required range of the