Research on real-time simulation time error correction method based on virtual power
Research on real-time simulation time error correction method based on virtual power
- Author(s): K. Liu 1 ; X. Meng 1 ; X. Ye 1 ; Z. Gong 2 ; W. Kang 2 ; Z. Kang 2
- DOI: 10.1049/icp.2020.0289
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- Author(s): K. Liu 1 ; X. Meng 1 ; X. Ye 1 ; Z. Gong 2 ; W. Kang 2 ; Z. Kang 2
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View affiliations
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Affiliations:
1:
China Electric Power Research Institute , Haidian District, Beijing , China ;
2: China University of Petroleum, College of Information and Control Engineering , Qingdao, Shandong , China
Source:
The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020),
2021
p.
2084 – 2089
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Affiliations:
1:
China Electric Power Research Institute , Haidian District, Beijing , China ;
- Conference: The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020)
- DOI: 10.1049/icp.2020.0289
- ISBN: 978-1-83953-330-3
- Location: Online Conference
- Conference date: 02-03 July 2020
- Format: PDF
The real-time simulation of power system can realize the real-time data interaction with the external physical equipment. However, with the increasing scale of distribution network, the realtime simulation of complex distribution network may need to be implemented by multiple computers after being divided into blocks, which may cause errors and instability problems due to time synchronization. This paper proposes a time synchronization method based on virtual power, which assumes that there is an imaginary virtual circuit composed of resistance and inductance at the common coupling point between different simulation modules. The voltage difference between the two coupling points is used as the input to calculate the consumed power. When the voltage signals at both ends are synchronized, the virtual power is zero, and synchronization is achieved. If the virtual power is not equal to zero, the virtual power is sent to the PI regulator as the error signal, and the output is used to correct the time of the simulator until the virtual power is zero. In this paper, the theoretical analysis and implementation method of this time synchronization scheme are given in detail, and simulation verification is performed. The simulation results show the correctness of the method.
Inspec keywords: virtualisation; power distribution control; synchronisation; PI control
Subjects: Distribution networks; Control of electric power systems; Power system control