Chen Lyu, Wanxing Sheng, Keyan Liu, 等. Novel Affine Power Flow Method for Improving Accuracy of Interval Power Flow Data in Cyber Physical Systems of Active Distribution Networks[J]. 中国电机工程学会电力与能源系统学报(英文), 2023,9(5):1881-1892.
Chen Lyu, Wanxing Sheng, Keyan Liu, et al. Novel Affine Power Flow Method for Improving Accuracy of Interval Power Flow Data in Cyber Physical Systems of Active Distribution Networks[J]. CSEE Journal of Power and Energy Systems, 2023, 9(5): 1881-1892.
Chen Lyu, Wanxing Sheng, Keyan Liu, 等. Novel Affine Power Flow Method for Improving Accuracy of Interval Power Flow Data in Cyber Physical Systems of Active Distribution Networks[J]. 中国电机工程学会电力与能源系统学报(英文), 2023,9(5):1881-1892.DOI: 10.17775/CSEEJPES.2020.07040.
Chen Lyu, Wanxing Sheng, Keyan Liu, et al. Novel Affine Power Flow Method for Improving Accuracy of Interval Power Flow Data in Cyber Physical Systems of Active Distribution Networks[J]. CSEE Journal of Power and Energy Systems, 2023, 9(5): 1881-1892.DOI: 10.17775/CSEEJPES.2020.07040.
Novel Affine Power Flow Method for Improving Accuracy of Interval Power Flow Data in Cyber Physical Systems of Active Distribution Networks
摘要
Abstract
A large number of load power and power output of distributed generation in an active distribution network (ADN) are uncertain
which causes the classical affine power flow method to encounter problems of interval expansion and low efficiency when applied to an AND. This then leads to errors of interval power flow data sources in the cyber physical system (CPS) of an ADN. In order to improve the accuracy of interval power flow data in the CPS of an ADN
an affine power flow method of an ADN for restraining interval expansion is proposed. Aiming at the expansion of interval results caused by the approximation error of non-affine operations in an affine power flow method
the approximation method of the new noise source coefficient is improved
and it is proved that the improved method is superior to the classical method in restraining interval expansion. To overcome the decrease of computational efficiency caused by new noise sources
a novel merging method of new noise sources in an iterative process is designed. Simulation tests are conducted on an IEEE 33-bus
PG&E 69-bus and an actual 1180-bus system
which proves the validity of the proposed affine power flow method and its advantages in terms of computational efficiency and restraining interval expansion.