基于相对增益矩阵的惯量响应空间耦合特征分析

doi:10.12204/j.issn.1000-7229.2022.09.013

电力建设 ›› 2022, Vol. 43 ›› Issue (9): 125-131.doi: 10.12204/j.issn.1000-7229.2022.09.013

基于相对增益矩阵的惯量响应空间耦合特征分析

朱林¹, 田政鳞¹(), 王正宇¹, 武志刚¹, 龙霏², 易杨²

1.华南理工大学电力学院,广州市 510641
2.广东电网有限责任公司电力调度控制中心,广州市 510600

收稿日期:2022-01-25 出版日期:2022-09-01 发布日期:2022-08-31
通讯作者: 田政鳞 E-mail:2407196952@qq.com
作者简介:朱林(1979),男,博士,硕士生导师,主要研究方向为电力系统稳定与控制、直流输电技术以及新能源并网;
王正宇(1999),男,硕士研究生,主要研究方向为电力系统稳定与控制、风电并网技术;
武志刚(1975),男,博士,硕士生导师,主要研究方向为电力系统数值仿真技术、复杂网络理论在电力系统中的应用;
龙霏(1985),女,硕士,高级工程师,主要从事电力系统分析与控制技术研究工作;
易杨(1983),女,硕士,高级工程师,主要从事电力系统分析与控制、电网运行管理等方面的工作。
基金资助:
中国南方电网有限责任公司科技项目(GDKJXM20198236)

Analysis of Spatial Coupling Characteristics of Inertia Response Based on the Relative Gain Matrix

ZHU Lin¹, TIAN Zhenglin¹(), WANG Zhengyu¹, WU Zhigang¹, LONG Fei², YI Yang²

1. School of Electric Power, South China University of Technology, Guangzhou 510641, China
2. Power Dispatching Control Center of Guangdong Power Grid Co., Ltd., Guangzhou 510600, China

Received:2022-01-25 Online:2022-09-01 Published:2022-08-31
Contact: TIAN Zhenglin E-mail:2407196952@qq.com
Supported by:
Science and Technology Project of China Southern Power Grid(GDKJXM20198236)

摘要/Abstract

摘要：

随着风电、光伏等新能源占比的不断提高,电力系统的惯性逐步降低,受扰动后惯量响应引起的频率变化率增大,给频率安全稳定带来了威胁。受电网拓扑结构的影响,惯量响应的频率变化情况与功率扰动位置之间存在空间上的耦合特征。针对惯量响应在空间上的差异性,通过计算多机系统惯量响应模型的相对增益矩阵,量化了发电机惯量响应与有功功率扰动之间在空间上的耦合关系。仿真结果表明,相对增益能直观地表征不同位置和类型的功率扰动对发电机惯量响应的影响,对功率事故下低惯量系统的频率安全稳定分析与控制具有重要意义。

关键词: 惯量响应, 空间耦合特征, 相对增益矩阵

Abstract:

With the increase of the proportion of new energy such as photovoltaic and wind power, the inertia of the receiving-end power grid is gradually diluted, and the rate of change of frequency caused by the inertia response will increase after being disturbed, which will threaten the safety and stability of frequency. There is spatial coupling between the change of frequency in the inertia response and the position of the power disturbance, which is related to the topology of the power grid. To cope with the spatial difference of the inertia response, this paper quantifies the spatial coupling relationship between generator inertia response and active power disturbance by calculating the relative gain matrix of the multi-machine system inertia response model. Simulation results show that the relative gain can intuitively characterize the influence of different positions and types of power disturbances on the generator inertia response. This method is of great significance to the analysis and control of the frequency safety and stability of low inertia systems under power accidents.

Key words: inertia response, spatial coupling characteristics, relative gain matrix

中图分类号:

TM73

朱林, 田政鳞, 王正宇, 武志刚, 龙霏, 易杨. 基于相对增益矩阵的惯量响应空间耦合特征分析[J]. 电力建设, 2022, 43(9): 125-131.

ZHU Lin, TIAN Zhenglin, WANG Zhengyu, WU Zhigang, LONG Fei, YI Yang. Analysis of Spatial Coupling Characteristics of Inertia Response Based on the Relative Gain Matrix[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(9): 125-131.

图/表 8

图1 SFR模型框图

Fig.1 Block diagram of the SFR model

图2 惯量响应空间差异性

Fig.2 Spatial difference of the inertia response

图3 多输入多输出系统框图

Fig.3 Block diagram of MIMO system

图4 相对增益矩阵

Fig.4 Relative gain matrix

图5 IEEE 39节点系统

Fig.5 IEEE 39-node system

图6 原动机空间耦合特性

Fig.6 Spatial coupling characteristics of prime mover

图7 发电机空间耦合特性

Fig.7 Spatial coupling characteristics of generators

图8 负荷节点的空间耦合特性

Fig.8 Spatial coupling characteristics of load node

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基于相对增益矩阵的惯量响应空间耦合特征分析

Analysis of Spatial Coupling Characteristics of Inertia Response Based on the Relative Gain Matrix

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