Study on voltage segment control strategy of large-scale renewable power base based on hierarchical-partitioned principle
Study on voltage segment control strategy of large-scale renewable power base based on hierarchical-partitioned principle
- Author(s): Chao Liu ; Vuanyuan Su ; Xi Li ; Hongzhi Liu ; Yan Li ; Qing Li
- DOI: 10.1049/cp.2019.0364
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- Author(s): Chao Liu ; Vuanyuan Su ; Xi Li ; Hongzhi Liu ; Yan Li ; Qing Li Source: 8th Renewable Power Generation Conference (RPG 2019), 2019 page (6 pp.)
- Conference: 8th Renewable Power Generation Conference (RPG 2019)
- DOI: 10.1049/cp.2019.0364
- ISBN: 978-1-83953-125-5
- Location: Shanghai, China
- Conference date: 24-25 Oct. 2019
- Format: PDF
Large-scale renewable power base collection system topology is complex. According to a single constant voltage control, prone to result in reactive power oscillation between different reactive power compensation equipments as some output and the others absorb. In this paper, based on hierarchical-partitioned principle, the renewable power base is divided into two reactive power and voltage control area: collection stations and renewable power station. Construct a reactive loss function with impedance and active power as variables, and characterize the trajectory of reactive loss with impedance and active power. The reactive power flow between two control areas and the allowable operating range of the bus voltage are restrained. The voltage of the collection station bus and the point of connection of renewable power station is taken as the control object. A voltage segment control strategy tracking renewable power output based on electrical topological impedance is proposed, to achieve reactive power voltage coordination control and improve reactive power voltage stability margin of the renewable power base. The simulation results of a renewable power base in the Three-North region of China verify effectiveness of the proposed strategy.
Inspec keywords: reactive power; power system stability; reactive power control; voltage control; power generation control; power grids
Subjects: Power system control; Voltage control; Control of electric power systems; Power and energy control
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