LAPSE:2019.0493
Published Article
LAPSE:2019.0493
Dynamic Performance Assessment of Primary Frequency Modulation for a Power Control System Based on MATLAB
Shizhe Li, Yinsong Wang
April 9, 2019
The primary frequency modulation (PFM) performance of a power control system (PCS) is an important factor affecting the security and stability of a power grid. The traditional control method is proportional integral (PI) control. In order to improve its dynamic control performance, a control method based on the combination of internal model control (IMC) and PI is proposed. Using the method of theoretical assessment and system identification, a simple simulated model of the typical PCS is established. According to the principle of system identification and the least square estimation (LSE) algorithm, the mathematical models of a generator and a built-in model are established. According to the four dynamic performance indexes, the main and auxiliary assessment index of the PCS are defined, and the benchmark and the result of the performance assessment are given. According to three different structures, the PFM dynamic performance of the PCS is analyzed separately. According to the dynamic performance assessment index of PFM, the structure of the control system and the influence of different parameters on the performance of the PCS are analyzed under ideal conditions. The appropriate control structure and controller parameters are determined. Secondly, under the non-ideal condition, the influence of the actual valve flow coefficient on the performance of the control system is studied under two different valve control modes. The simulation results show that the internal model combined with PI has better dynamic control performance and stronger robustness than the traditional PI control, and it also has better application prospects for thermal power plants.
Keywords
dynamic performance assessment index, internal model control, least square estimation, power control system, primary frequency modulation, valve local flow coefficient
Suggested Citation
Li S, Wang Y. Dynamic Performance Assessment of Primary Frequency Modulation for a Power Control System Based on MATLAB. (2019). LAPSE:2019.0493
Author Affiliations
Li S: School of Control and Computer Engineering, North China Electric Power University, Baoding 071003, China [ORCID]
Wang Y: School of Control and Computer Engineering, North China Electric Power University, Baoding 071003, China
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Journal Name
Processes
Volume
7
Issue
1
Article Number
E11
Year
2018
Publication Date
2018-12-30
Published Version
ISSN
2227-9717
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PII: pr7010011, Publication Type: Journal Article
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LAPSE:2019.0493
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doi:10.3390/pr7010011
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Apr 9, 2019
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Calvin Tsay
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