| 引用本文: | 郭敬梅,盛 超,余超耘,等.一种用于非平衡分布式微网的双重灵活模型预测功率控制方法[J].电力系统保护与控制,2024,52(23):107-118.[点击复制] |
| GUO Jingmei,SHENG Chao,YU Chaoyun,et al.A dual flexible model predictive power control method for unbalanced distributed microgrids[J].Power System Protection and Control,2024,52(23):107-118[点击复制] |
|
| 摘要: |
| 1.广东省智能电网新技术企业重点实验室，广东 广州510080；2.南方电网电力科技股份有限公司，广东 广州 510000 |
| 关键词: 模型预测控制 功率控制 不平衡微网 T型三电平变换器 |
| DOI：10.19783/j.cnki.pspc.240103 |
| 投稿时间：2024-01-22修订日期：2024-04-06 |
| 基金项目:中国南方电网有限责任公司科技项目资助(GDKJXM20240547) |
|
| A dual flexible model predictive power control method for unbalanced distributed microgrids |
| GUO Jingmei1,2,SHENG Chao1,2,YU Chaoyun1,TANG Qinglan1,ZENG Youzhi1,SU Qin1 |
| (1.?Guangdong Provincial Key Laboratory of New Technology for Smart Grid, Guangzhou 510080, China; 2. China Southern Power Grid Technology Co., Ltd., Guangzhou 510000, China) |
| Abstract: |
| The power quality of distributed microgrid (e.g., on-board microgrids) is severely affected by unbalanced loads, and the operation of single-phase loads (unbalanced loads) can lead to a series of imbalance issues in such systems, endangering system reliability and shortening lifespan. Existing control strategies are typically limited to suppressing power fluctuations and do not adequately address issues such as current distortion and point of common coupling (PCC) voltage imbalance. Addressing power fluctuations, this paper optimizes the control layer of the model predictive control (MPC) based on traditional flexible power control, improving the calculation of adaptive coefficients. Building upon this, a dual-flexible model predictive control (DF-MPC) is designed, employing a novel dual-layer flexible computational structure that prioritizes the selection of control vectors with the best voltage balancing effect. This method is tested on a prototype hardware platform with a rated power of 10 kW. Experimental results demonstrate that the proposed DF-MPC method can effectively suppress power fluctuations, reduce the degree of PCC voltage imbalance, and maintain high power quality. |
| Key words: model predictive control power control unbalanced grid T-type three level converter |
