| 引用本文: | 赖锦木,尹 越,尹 昕,等.基于混合变压器互联的交直流微电网多模态协调控制策略[J].电力系统保护与控制,2025,53(21):15-27.[点击复制] |
| LAI Jinmu,YIN Yue,YIN Xin,et al.Multimode coordination control strategy for AC/DC hybrid microgrids interconnected via hybrid transformers[J].Power System Protection and Control,2025,53(21):15-27[点击复制] |
|
| 摘要: |
| 现有的交直流微电网(AC/DC hybrid microgrids, HMG)协调控制与装备难以平衡源荷不确定性下运行经济性与安全性的矛盾。为此，考虑稳态运行与故障工况，提出一种考虑多时间尺度的基于混合变压器(hybrid transformer, HT)互联的交直流微电网(hybrid transformer-interconnected HMG, HT-HMG)多模态协调控制策略。首先，设计HT-HMG拓扑结构，根据配电网的运行工况将HT-HMG系统分为并联模式、串联模式和孤岛模式，以混合变压器为调控手段构建HMG“正常-故障”分区分层控制体系。然后从多时间尺度出发，提出多运行模态下的能量管理优化策略和功率协调控制策略。对于稳态运行工况，提出长时间尺度以最大化运行收益为目标的能量管理优化策略，以提高HMG运行的经济性。对于故障运行工况，提出基于HT紧急电压支撑的实时功率协调控制策略，在变压器节点对配电网故障进行阻隔，以提高HMG运行的安全性。最后通过仿真验证了所提HT-HMG多模态协调控制策略的可行性和有效性。 |
| 关键词: 交直流微电网 混合变压器 多模态协调控制 能量管理优化 紧急电压支撑 |
| DOI：10.19783/j.cnki.pspc.250142 |
| 投稿时间：2025-02-14修订日期：2025-06-17 |
| 基金项目:国家自然科学基金项目资助(52307148) |
|
| Multimode coordination control strategy for AC/DC hybrid microgrids interconnected via hybrid transformers |
| LAI Jinmu1,YIN Yue1,YIN Xin2,DU Yunfei3 |
| (1. School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; 2. School of
Automation, Wuhan University of Technology, Wuhan 430070, China; 3. Tsinghua Shenzhen
International Graduate School, Shenzhen 518055, China) |
| Abstract: |
| Existing coordination control methods and equipment for hybrid AC/DC microgrids (HMG) often struggle to balance operational economy and system security under source-load uncertainties. To address this issue, considering both steady-state and fault conditions, this paper proposes a multimode coordination control strategy for hybrid transformer (HT)-interconnected hybrid AC/DC microgrids (HT-HMG) based on multiple time scales. First, the HT-HMG topology structure is designed, and the HT-HMG system is divided into shunt, series, and island modes according to the operating conditions of the distribution network. A “normal-fault” zoning and hierarchical control system for HMG is constructed using the HT as the key regulating component. Then, starting from multiple time scales, energy management optimization strategy and power coordination control strategy under multiple operating modes are proposed. For steady-state operating conditions, a long-term energy management optimization strategy with the objective of maximizing operating revenue is proposed to improve the economic efficiency of HMG operation. For fault conditions, a real-time power coordination control strategy based on HT emergency voltage support is proposed, enabling fault isolation at transformer nodes to enhance system security. Finally, the feasibility and effectiveness of the proposed HT-HMG multimode coordination control strategy are verified through simulations. |
| Key words: AC/DC hybrid microgrids hybrid transformer multimode coordination control energy management optimization emergency voltage support |
