Journal
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
Volume 12, Issue 2, Pages 1174-1185Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSTE.2020.3037155
Keywords
Phase locked loops; Power system stability; Stability analysis; Dynamics; Power system dynamics; Rotors; Mathematical model; Analogized synchronous-generator model; converter dominated power system; PLL; transient synchronizing stability; VSC
Categories
Funding
- National Natural Science Foundation of China [51877211]
Ask authors/readers for more resources
This article focuses on the synchronizing dynamic issue of VSC dominated power systems. By modeling the dynamics of VSC's PLL similar to SG's rotor motion and studying the influence of control interaction, the transient synchronizing stability of a single VSC infinite bus system is analyzed. The study identifies the impact of alternating current control on PLL and explores factors such as bandwidth and current references on transient stability.
In this article, the synchronizing dynamic issue of VSC dominated power system is focused on. First, based on the discovered analogous synchronizing dynamical process of VSC (voltage source converter) and SG (synchronous generator), the dynamics of VSC's PLL (phase locked loop) is modeled in the similar form of SG's rotor motion. The influence of control interaction on PLL is modeled in the same way as that of control dynamics on rotor motion. Then the analogized SG model of PLL-based VSC is developed. Based on the proposed model, the analysis idea jointing accelerating-decelerating area method and numerical simulation is employed to study the transient synchronizing stability of single VSC infinite bus system. It is identified that the influence of ACC (alternating current control) on PLL is to accelerate PLL's equivalent motion in first swing, which aggravates the mismatch of accelerating-decelerating area and thus deteriorates the transient stability. Furtherly, the influence factors including ACC's bandwidth, PLL's bandwidth and current references on the transient stability are studied. This article provides a useful analysis idea for transient synchronizing stability analysis of VSC with influence of control interaction considered.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available