| 引用本文: | 葛磊蛟,崔庆雪,李昌禄,等.计及时延的智能配电网光储就地-分布电压优化控制方法[J].电力系统保护与控制,2025,53(4):48-58.[点击复制] |
| GE Leijiao,CUI Qingxue,LI Changlu,et al.Local-distributed voltage optimization control method for photovoltaics and energy storage in a smart distribution network considering time delay[J].Power System Protection and Control,2025,53(4):48-58[点击复制] |
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| 摘要: |
| 高比例、强随机性的光伏分散无序接入智能配电网常导致节点电压越限，而在调压过程中，控制对象间不可避免的通信时延又加剧了智能配电网电压优化控制的难度。为此，提出了一种考虑时延因素影响的光储就地-分布式协调控制策略。首先，分析光伏逆变器无功调压能力，确定就地控制的无功出力限度，并引入分布式一致性因子，构建配电网高比例光伏的就地-分布控制策略。进一步结合储能的有功调节能力，提出光储协调的就地-分布电压优化控制无时延模型。然后，考虑通信时延的影响，建立算法与通信时延耦合的一致性协议，构建光储协调的就地-分布电压优化控制时延模型。先利用线性矩阵不等式求解出时延模型的稳定裕度，再利用时延模型进行补偿控制。最后，通过改进的IEEE 33节点系统进行算例验证。结果表明，利用所提方法进行通信时延补偿后，系统网络损耗和电压偏差分别下降了23.01%和20.52%，证明了该方法的优越性。 |
| 关键词: 高比例光伏 储能调节 电压优化 一致性算法 通信时延 |
| DOI：10.19783/j.cnki.pspc.240356 |
| 投稿时间：2024-03-29修订日期：2024-06-05 |
| 基金项目:国家重点研发计划项目资助(2022YFB2403800)；国家自然科学基金项目资助(52277118)；天津市自然科学基金多元投入重点项目资助(22JCZDJC00660) |
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| Local-distributed voltage optimization control method for photovoltaics and energy storage in a smart distribution network considering time delay |
| GE Leijiao1,CUI Qingxue2,LI Changlu1,LI Xiaoping3 |
| (1. School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China; 2. State Grid Tianjin
Electric Power Company Research Institute, Tianjin 300384, China; 3. School of Automation and
Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China) |
| Abstract: |
| The high proportion and strong randomness of photovoltaic (PV) systems being dispersed and disorderly integrated into smart distribution networks often lead to node voltage violation. Additionally, communication delay between control objects during voltage regulation further increases the difficulty of voltage optimization control in smart distribution networks. To address this issue, this paper proposes a local distributed coordinated control strategy for PV and energy storage, considering the influence of time delay. First, the reactive power regulation capability of PV inverters is analyzed to determine the reactive power output limit for local control, and a distributed consistency factor is introduced to construct a local distributed control strategy for distribution networks with high PV penetration. Furthermore, combined with the active power regulation capability of energy storage, a local distributed voltage optimization control model for PV and storage coordination without considering time delay is proposed. Then, considering the impact of communication delay, a consensus protocol is established to couple the algorithm with communication delay, and a time-delay local distributed voltage optimization control model for storage coordination is constructed. The stability margin of the time-delay model is solved using linear matrix inequality, and the delay model is then used for compensation control. Finally, an improved IEEE 33-bus system is used for numerical verification. The results show that after applying the proposed method for communication delay compensation, network losses and voltage deviations are reduced by 23.01% and 20.52%, respectively, demonstrating the superiority of the proposed method. |
| Key words: high proportion photovoltaic energy storage regulation voltage optimization consistency algorithm communication delay |
