Distribution Network Reconfiguration Considering the Impacts of Local Renewable Generation and External Power Grid

Li, Haixiao; Lekić, Aleksandra; Li, Shan; Jiang, Dongrong; Guo, Qiang; Zhou, Lin

doi:10.1109/tia.2023.3307070

Cited by 3 publications

(1 citation statement)

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“…Joint optimization is a distributed optimization method that decomposes the global optimization problem into multiple sub-problems for a coordinated solution, it has a low communication burden, strong controllability, and high flexibility [9,10]. Collaborative optimization generally uses methods such as Lagrangian relaxation [11,12], KKT conditional decomposition [13], and Benders decomposition [14,15] to decouple and solve the global optimization model. However, in solving the problem of collaborative reactive power optimization in power systems, more studies are using Lagrangian relaxation methods, mainly including the auxiliary problem principle (APP) [16] and alternating direction multiplier method ADMM [17].…”

Section: Introductionmentioning

confidence: 99%

Collaborative Control of Reactive Power and Voltage in a Coupled System Considering the Available Reactive Power Margin

Li,

Guo,

Liu

et al. 2024

Sustainability

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This article proposes a hierarchical collaborative reactive power and voltage control method aimed at meeting the internal voltage requirements of a coupled system composed of centralized new energy stations such as wind and solar power and traditional thermal power units, with particular attention paid to the reactive power regulation ability of power units in new energy stations. This method is implemented in two layers: At the transmission layer, the overall reactive power compensation capacity of thermal power units and stations on the transmission lines within the system is determined according to the engineering requirements of different node voltages in the coupled system, the regulation voltages of the high-voltage grid-connected points and the point of common coupling (PCC) of the stations are found, and the actual regulation voltages of the PCCs of the stations are given as commands. At the station layer, based on determining reactive power distribution between power units and continuous reactive power compensation devices within each station, voltage optimization is carried out using the voltage command issued by the transmission layer as a reference. At the same time, consistency coordination between the transmission layer and the station layer is achieved based on the Analytical Target Cascading (ATC) method at different layers. Finally, simulation analysis was conducted on a regional coupled system in Dalian. The results showed that the method proposed in this paper can effectively control the voltage safety requirements of each region and PCC in the coupled system and, to some extent, improve the economic efficiency of system operation.

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