负荷虚拟同步机及其低电压故障穿越控制

HU Wenqiang

您当前的位置：

首页 >

文章列表页 >

负荷虚拟同步机及其低电压故障穿越控制

更新时间：2025-08-13

- 负荷虚拟同步机及其低电压故障穿越控制
- Automation of Electric Power Systems Vol. 42, Issue 9, Pages: 100-107(2018)
- 作者机构：
  
  东南大学电气工程学院,江苏省,南京市,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
移动端阅览
HU Wenqiang. [J]. Automation of electric power systems, 2018, 42(9): 100-107.
DOI：

HU Wenqiang. [J]. Automation of electric power systems, 2018, 42(9): 100-107. DOI：

摘要

负荷虚拟同步机(LVSM)是一种电网友好型负荷并网接口，但其本身不具备低电压穿越能力。为此，文中提出一种适应电网对称与不对称故障的LVSM低电压穿越控制方法。首先，提出LVSM的统一拓扑及其基本控制策略。在基本控制策略的基础上增加电网电压正序分量提取、低电压穿越检测、功率指令变更策略、故障期间使能的负序电流抑制、故障期间电流环输入限幅5个环节，实现电网故障短时间内LVSM不脱网、负荷稳定运行，并最大限度地为电网提供无功支撑。由于LVSM在故障期间保持惯性功率控制，故障结束后功率振荡平滑且有惯性，可有效减轻对电网的暂态冲击。硬件在环实验验证了所提低电压穿越控制方法的有效性。

Abstract

The load virtual synchronous machine(LVSM)is a kind of grid-friendly grid-connected interface for loads. However

it does not have the low voltage ride-through(LVRT)capability. For this reason

this paper proposes a LVRT control method for the LVSM to adapt the symmetrical and unsymmetrical faults in the power grid. Firstly

the unified topology of LVSM and its corresponding control strategy are proposed. The extraction of positive sequence component of grid voltage

the detection of LVRT

the change of power setting values

the suppression of negative sequence current and the limitation of input of current loop during a fault are introduced into the basic LVSM controller. It can achieve a short time of grid-connected operation during power failure

the steady operation of loads and the maximal supply of reactive power. Since the LVSM maintains the inertia power control during the fault

the power oscillation is smooth and has inertia after the fault

which can effectively reduce the transient impact on the power grid. The hardware-in-loop experiments are carried out to verify the effectiveness of the proposed LVRT control method.

关键词

Keywords

references

Views

3889

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Improved Control Strategy of High Voltage Ride-through for Doubly-fed Wind Turbines Based on Dynamic Reactive Power Support

Current-based Control Strategy for Grid-connected Converter with Energy Storage and Embedded Synchronous Generator Support Characteristics

超高海拔光伏电站低电压穿越测试系统设计关键技术

微网逆变器低电压穿越控制策略

提升风电场MMC-HVDC系统LVRT能力的协调控制策略

Related Author

MA Tengyu

LEI Jianhua

CAI Guang

LEI Guoqing

YAN Xiangwu

CAO Yijia

YU Songtao

LI Yong

Related Institution

Shenzhen Poweroak Newener Co., Ltd.

Hebei Key Laboratory of Distributed Energy Storage and Microgrid (North China Electric Power University)

Electric Power Research Institute of China Southern Power Grid Company Limited

School of Electrical and Information Engineering, Hunan University

School of Automation, Southeast University

⁰