1.河海大学电气与动力工程学院,江苏省南京市 211100
2.清华大学电机工程与应用电子技术系,北京市 100084
李科鑫(2002—),男,硕士研究生,主要研究方向:输配电网协同状态估计。E-mail:likexin15296657151@163.com
黄蔓云(1991—),女,博士,副教授,硕士生导师,主要研究方向:互联大电网状态估计、中低压配电网态势感知。E-mail:hmy_hhu@yeah.net
卫志农(1962—),男,通信作者,博士,教授,博士生导师,主要研究方向:电力系统运行分析与控制、输配电系统自动化。E-mail:wzn_nj@263.net
收稿:2025-12-11,
修回:2026-02-24,
网络首发:2026-06-16,
纸质出版:2026-09-25
移动端阅览
李科鑫,黄蔓云,卫志农等.基于高斯-牛顿局部信念传播的输配电网异步状态估计[J].电力系统自动化,2026,50(18):108-116.
LI Kexin,HUANG Manyun,WEI Zhinong,et al.Asynchronous State Estimation for Transmission and Distribution Networks Based on Gauss-Newton Local Belief Propagation[J].Automation of Electric Power Systems,2026,50(18):108-116.
李科鑫,黄蔓云,卫志农等.基于高斯-牛顿局部信念传播的输配电网异步状态估计[J].电力系统自动化,2026,50(18):108-116. DOI: 10.7500/AEPS20251211002.
LI Kexin,HUANG Manyun,WEI Zhinong,et al.Asynchronous State Estimation for Transmission and Distribution Networks Based on Gauss-Newton Local Belief Propagation[J].Automation of Electric Power Systems,2026,50(18):108-116. DOI: 10.7500/AEPS20251211002.
随着电力系统运行方式的巨大演变与输配电网耦合关系的日益增强,各自独立的输配电网状态估计方法已无法满足输配电网统一调度和精细化管理需求,输配协同状态估计应运而生。考虑到集中式状态估计计算量大和输配电网量测更新不同步等问题,提出了一种基于高斯-牛顿局部信念传播的输配电网异步状态估计方法。首先,根据接收的输配电网边界信息,建立动态分区因子图模型,并在此基础上提出一种高斯-牛顿局部信念传播算法,以实现因子图模型的动态局部更新和输电网的全分布式估计,缓解输电网控制中心的计算负担。然后,提出基于高斯-牛顿局部信念传播的输配电网异步状态估计方法,以实现输电网各边界节点信息的实时异步更新,充分利用算法的分布式和局部计算优势。在正常和异常量测场景下,所提方法均可在保证估计精度的同时有效减少因子图模型的消息传递数,节省了计算资源。
With the dramatic evolution of power system operation modes and the growing coupling between transmission and distribution networks
independent state estimation methods for transmission and distribution networks can no longer meet the requirements of unified dispatching and refined management of transmission and distribution networks
giving rise to coordinated transmission-distribution state estimation. Considering the drawbacks of centralized state estimation
such as heavy computational burden and asynchronous measurement updates between transmission and distribution networks
this paper proposes an asynchronous state estimation method for transmission and distribution networks based on Gauss-Newton local belief propagation. Firstly
a dynamic partitioned factor graph model is constructed according to the received boundary information of transmission and distribution networks. On this basis
a Gauss-Newton local belief propagation algorithm is developed to realize dynamic local updating of the factor graph model and fully distributed state estimation for the transmission network
alleviating the computational burden of the transmission network control center. Secondly
the asynchronous state estimation method based on Gauss-Newton local belief propagation is formulated to achieve real-time asynchronous information updating of each boundary node in the transmission network
which fully exploits the distributed and local computing advantages of the algorithm. Under both normal and bad measurement scenarios
the proposed method can effectively reduce the number of message transmitted of the factor graph model while guaranteeing estimation accuracy
thus saving computational resources.
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