Search

Your search keyword '"Wang, Peng"' showing total 17 results
Start Over Author "Wang, Peng" Journal ieee transactions on energy conversion
17 results on '"Wang, Peng"'

9. Stability Analysis of Phase Locked Loops for AC Microgrids With Hybrid Power Sources

Author

Wang, Rui, Zhao, Xin, Sun, Qiuye, Xiao, Jianfang, Zhang, Li, and Wang, Peng

Abstract

Synchronous instability of the multiple distributed generations has been an important issue for microgrids. Therein, the phase locked loop (PLL) instability is one of the significant reason for synchronous instability of multi-inverter microgrids. Although this instability issue has been widely studied, it is ignored for microgrids with numerous inverters controlled through different controllers. To full this gap, this paper proposes a multi-inverter parallel microgrid stability analysis method based on PLL. Firstly, this paper establishes a PLL small signal model based on the droop control strategy and the P&Q control strategy. Furthermore, the whole PLL small signal analysis model of multi-inverter parallel microgrid is proposed by signal flow graph and Mason Gain Theorem, which is more convenient for power engineers. Eventually, the closed-loop transfer function of PLL is obtained. The proposed integrated small signal model can predict the synchronous stability regarding the PLL of the multi-inverter under grid-connected mode and the island mode. Finally, the simulation and experimental results can well validate the feasibility and effectiveness of the proposed stability analysis strategy based on PLL in the multi-inverter parallel microgrid. Therein, the simulation and experimental results illustrate that the proposed stability identification approach can provide an effective stability control parameter selection method.

Published
2023
Full Text
View/download PDF

15. Reliability Benefit Analysis of Adding WTG to a Distribution System

Author

Wang, Peng and Billinton, Roy

Subjects
Air-turbines -- Testing, Wind power -- Models, Business, Electronics, Electronics and electrical industries
Abstract

Wind turbine generators (WTG) used as alternative supply in a distribution system have different impacts on the system reliability performance than conventional alternative supplies due to the variable wind speed. This paper investigates the system reliability benefi1ts of adding WTG as alternative supply in a rural distribution system. The wind generation interrupted energy benefit (WGIEB), the wind generation interruption cost benefit (WGICB), the equivalent number of conventional generators (ENCG) and the equivalent conventional generator capacity (ECGC) of one MW WTG are introduced. These indices provide direct reliability benefit indicators on the addition of WTG, and are important information for system planners to make planning decisions such as the selection of a wind site and the number of WTG. A test rural distribution system is utilized to illustrate the proposed technique. The effects on the system reliability benefits of the wind site selection and the number of wind units are investigated. Index Terms--Distribution system, reliability benefit analysis, wind generation.

Published
2001

Catalog

Books, media, physical & digital resources
See catalog results