Analogized Synchronous-Generator Model of PLL-Based VSC and Transient Synchronizing Stability of Converter Dominated Power System

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 th...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on sustainable energy 2021-04, Vol.12 (2), p.1174-1185
Main Authors: Hu, Qi, Fu, Lijun, Ma, Fan, Ji, Feng, Zhang, Yan
Format: Article
Language:English
Subjects:
Analogized synchronous-generator model
Control stability
converter dominated power system
Converters
Deceleration
Dynamic stability
Jointing
Mathematical model
Mathematical models
Phase locked loops
Phase locked systems
PLL
Power system dynamics
Power system stability
Rotors
Stability analysis
Synchronism
Transient stability
transient synchronizing stability
VSC
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1949-3029
1949-3037
DOI:10.1109/TSTE.2020.3037155