构网型控制提升系统电网强度机理探究

房幸龙; 胡阳; 宋子秋; 刘吉臻

doi:doi:10.19912/j.0254-0096.tynxb.2024-1443

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构网型控制提升系统电网强度机理探究

更新时间：2026-01-08

- 构网型控制提升系统电网强度机理探究
- Vol. 46, Issue 12, Pages: 406-416(2025)
- 作者机构：
- 作者简介：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-1443
  CLC： TM614
- Published Online：07 January 2026，
  
  Published：2025
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房幸龙, 胡阳, 宋子秋, et al. 构网型控制提升系统电网强度机理探究[J]. 2025, 46(12): 406-416.
DOI：

房幸龙, 胡阳, 宋子秋, et al. 构网型控制提升系统电网强度机理探究[J]. 2025, 46(12): 406-416. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1443.

摘要

为深入探究构网型控制提升系统稳定性的机理

首先建立跟网型与构网型控制变流器的数学模型

通过特征值分析法对二者的并网振荡特性进行分析。其次

针对传统新能源系统短路比计算方法未考虑构网型变流器接入的问题

提出一种用于构网型与跟网型机组混合系统的短路比计算修正方法

以修正构网型机组接入系统后引起的短路比变化。随后

定量分析构网型控制新能源机组接入跟网型机组系统后引起的系统短路容量及等效短路比的变化规律

从构网型控制提升电力系统电网强度的角度揭示构网型机组占比增加对系统电网强度及稳定性的提升能力

并基于仿真模型验证所得结论的有效性。

Abstract

In order to further investigate the mechanism of grid-forming control to enhance the stability of the system

this paper firstly establishes the mathematical models of grid-following and grid-forming control

and analyzes the grid-connected oscillation characteristics of the two through the eigenvalue analysis method. Secondly

based on the deficiencies in the calculation of short-circuit ratio of existing renewable energy stations

a correction method for the calculation of equivalent short-circuit ratio of hybrid systems of grid-following and grid-forming is proposed. Subsequently

the article quantitatively deduces the change rule of system short-circuit capacity and equivalent short-circuit ratio caused by the access of grid-forming control units to the system of grid-following units

proves that the process of increasing the proportion of grid-forming units can effectively improve the stability of the system from the point of view of improving the system short-circuit ratio of grid-following units

and verifies the validity of the obtained conclusions based on the electromagnetic transient simulation model.

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Keywords

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