Parallel Method for Establishing State Space Equation of Power System
[1]WANG Kewen,YE Mengyu,LIU Yanhong.Parallel Method for Establishing State Space Equation of Power System[J].Journal of Zhengzhou University (Engineering Science),2021,42(01):15-20.[doi:10.13705/j.issn.1671-6833.2021.01.003]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
42卷
Number of periods:
2021 01
Page number:
15-20
Column:
Public date:
2021-03-14
- Title:
- Parallel Method for Establishing State Space Equation of Power System
- Keywords:
- state matrix; BICGSTAB; incomplete LU; compressed row storage; Open MP
- CLC:
- TM712
- DOI:
- 10.13705/j.issn.1671-6833.2021.01.003
- Abstract:
- In order to reduce the calculation time of small-disturbance stability analysis of large-scale power systems, the method of rapid formation of power system state space matrix was optimized. According to the plug-in modeling technology, the formation process of the state matrix was analyzed; the incomplete LU decomposition method (ILUTP) with double thresholds was used to adjust the position of the non-zero elements in the correlation matrix, and the matrix was converted to a diagonally dominant form; double conjugate gradient stabilization method (BICGSTAB) was used iteratively to solve the processed large sparse matrix; the storage method of the matrix was row-compressed sparse storage; the algorithm characteristics of ILUTP and BICGSTAB were used to realize the parallel computing based on Open MP technology; two calculation examples of 23 generators and 98 generators were included respectively. The generators adopted the sixth-order generator model. The excitation adjustment module and the prime mover speed control block were the actual parameters of the system, and the traditional methods and optimization methods were compared. The time taken to solve the state matrix method verified the feasibility and effectiveness of the proposed method. The results showed that this method could speed up the formation of the state space of large power systems, and its parallel speedup ratio was close to 3.
- References:
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Last Update:
2021-03-15