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.

中文翻译：

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基于PLL的VSC的同步发电机模型和变流器主导电力系统的暂态同步稳定性。

在本文中，以VSC为主的电源系统的同步动态问题为重点。首先，基于发现的VSC（电压源转换器）和SG（同步发电机）的类似同步动态过程，以SG转子运动的类似形式对VSC PLL（锁相环）的动力学进行建模。以与控制动力学对转子运动相同的方式对控制相互作用对PLL的影响进行建模。然后，开发了基于PLL的VSC的模拟SG模型。在此模型的基础上，结合加速/减速面积分析方法和数值模拟方法，研究了单VSC无穷大总线系统的暂态同步稳定性。可以确定，ACC（交流控制）对PLL的影响是加速PLL'。在第一挥杆中的等效运动，加剧了加减速区域的失配，从而降低了瞬态稳定性。此外，研究了包括ACC带宽，PLL带宽和电流基准对瞬态稳定性的影响因素。本文为考虑控制相互作用影响的VSC瞬态同步稳定性分析提供了有用的分析思路。