【Applied Energy最新原创论文】含智能软开关的输配电网全并行分布式协调的负荷恢复方法

AEii国际应用能源 · 公众号 · · 2023-08-14 11:28

正文

原文信息：

Fully parallel decentralized load restoration in coupled transmission and distribution system with soft open points

原文链接：

https://www.sciencedirect.com/science/article/pii/S030626192300990X

Highlights

(1) 提出了输配电网协同的分布式负荷恢复方法。

(2) 充分挖掘智能软开关的灵活调控能力，提高了负荷恢复水平和速度。

(3) 采用全并行分布式恢复策略减少了每次迭代的求解时间。

(4) 开发了热启动模式，进一步加速分布式恢复方法的求解速度。

摘要

输电系统运营商和配电系统运营商的协调对于提高大停电期间的供电可靠性至关重要。然而，这两个系统在现实中通常是独立运行的。为了协调他们，本文提出了一种新的输配电网全并行分布式负荷恢复方法。基于目标级联分析法，本文提出的输配电网分布式协调恢复模型通过分解共享边界变量，从而构建了输电网负荷恢复子模型和配电网负荷恢复子模型，并进行迭代求解。在目标级联分析法中引入对角二次近似方法，使得所有恢复子模型都能以完全并行的方式求解，无需中央协调层。这种全并行求解方式提高了分布式恢复算法的计算效率。此外，为了提高输电网和配电网的相互支持能力，所提模型充分发挥了配电网中的灵活调控资源的潜在优势，包括智能软开关和网络重构，从而提高了重要负荷的恢复速度，同时降低了电压偏差。所提模型的有效性通过IEEE标准测试系统进行了验证和分析。

更多关于"decentralized load restoration"的研究请见：

https://www.sciencedirect.com/search?qs=decentralized%20load%20restoration&pub=Applied%20Energy&cid=271429

Abstr act

Collaboration between transmission and distribution system operators (TSOs and DSOs) is crucial to improve power supply reliability during a massive blackout. However, these two systems usually operate separately in reality. To coordinate them, a new fully parallel decentralized TSO+DSO service restoration (D-TDSR) scheme is proposed in this paper. Based on analytical target cascading (ATC) method, the proposed D-TDSR is able to formulate the local restoration model for each TSO and DSO by decomposing shared boundary information in an iterative process. By introducing the diagonal quadratic approximation in ATC, all local restoration models are solved in a fully parallel manner with no need for a central coordinator. This parallel implementation increases the computation efficiency of decentralized restoration procedure. Furthermore, to enhance the ability of TSO and DSOs to support each other, the potential benefits of flexible regulation in DSO, including soft open points and network reconfiguration, are fully exploited, thus improving critical load restoration speed, and reducing voltage deviations. The effectiveness of the proposed D-TDSR is validated using an IEEE standard test system.

Keywords

Decentralized load restoration

Analytical target cascading

Transmission and distribution coordination

Diagonal quadratic approximation

Soft open point

Graphics