Loading margin evaluation of AC/DC hybrid system using optimized continuous power flow
Loading margin evaluation of AC/DC hybrid system using optimized continuous power flow
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- Author(s): M. Han 1 ; Y. Chen 1, 2 ; S. Gao 1 ; S. Huang 1, 2 ; S. Shi 3
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View affiliations
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Affiliations:
1:
Department of Electrical Engineering , Tsinghua University , Beijing , China ;
2: Research Centre of Cloud Simulation and Intelligent Decision-making, Tsinghua Sichuan EIRI. , Chengdu , China ;
3: State Grid Shanghai Electric Power Research Institute , Shanghai , China
Source:
The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020),
2021
p.
448 – 453
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Affiliations:
1:
Department of Electrical Engineering , Tsinghua University , Beijing , China ;
- Conference: The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020)
- DOI: 10.1049/icp.2020.0077
- ISBN: 978-1-83953-330-3
- Location: Online Conference
- Conference date: 02-03 July 2020
- Format: PDF
Voltage source converter based high voltage direct current (VSC-HVDC) has become attractive for its independent and rapid adjustments of active and reactive power, reactive power support for AC grid voltage and immunity against commutation failure. These features enable VSC-HVDC to enhance power system voltage stability. In this paper, the continuation power flow calculation and load margin evaluation of the AC/DC hybrid system with VSC-HVDC is researched. First, A unified power flow algorithm based on the Newton-Raphson method is formulated to calculate the power flow of the AC/DC hybrid system incorporating VSC−HVDC. Then, the load margin of the AC/DC hybrid system under the specific control mode is calculated by continuous power flow method. Based on this, the particle swarm optimization (PSO) is utilized to explore the maximum load margin of the AC/DC hybrid system. Test results on a modified IEEE57 AC/DC hybrid system incorporating a VSC-HVDC verify the effectiveness of the presented method in exploring the maximum load margin.
Inspec keywords: HVDC power transmission; particle swarm optimisation; power grids; HVDC power convertors; power transmission control; Newton-Raphson method; load flow control; reactive power control; voltage-source convertors; power system stability
Subjects: Power system control; Power convertors and power supplies to apparatus; d.c. transmission; Interpolation and function approximation (numerical analysis); Optimisation techniques; Control of electric power systems; Power and energy control; Optimisation techniques; Interpolation and function approximation (numerical analysis)
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