新型电力系统点对网惯性支撑能力在线监测方法

doi:10.16183/j.cnki.jsjtu.2023.029

上海交通大学学报 ›› 2024, Vol. 58 ›› Issue (9): 1390-1399.doi: 10.16183/j.cnki.jsjtu.2023.029

• 新型电力系统与综合能源 • 上一篇下一篇

新型电力系统点对网惯性支撑能力在线监测方法

邓小宇¹, 刘牧阳¹, 常喜强¹^,², 南东亮³, 莫若¹, 陈俊儒¹()

1.新疆大学电气工程学院, 乌鲁木齐 830046
2.国网新疆电力有限公司,乌鲁木齐 830011
3.国网新疆电力有限公司电力科学研究院,乌鲁木齐 830011

收稿日期:2023-01-28 修回日期:2023-03-05 接受日期:2023-03-24 出版日期:2024-09-28 发布日期:2024-10-11
通讯作者: 陈俊儒,副教授,博士生导师;E-mail:junru.chen@xju.edu.cn.
作者简介:邓小宇(1995—),硕士生,从事电力系统稳定与控制方向的研究.
基金资助:
国家自然科学基金(52267009);中国博士后科学基金(2021M702749)

Online Monitoring Method for Inertial Support Capacity of Point-to-Grid in New Power Systems

DENG Xiaoyu¹, LIU Muyang¹, CHANG Xiqiang¹^,², NAN Dongliang³, MO Ruo¹, CHEN Junru¹()

1. School of Electrical Engineering, Xinjiang University, Urumqi 830046, China
2. State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830011, China
3. Electric Power Research Institute of State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830011, China

Received:2023-01-28 Revised:2023-03-05 Accepted:2023-03-24 Online:2024-09-28 Published:2024-10-11

摘要/Abstract

摘要：

准确及时地监测低惯量新型电力系统中聚合电源汇集点对电网的惯性支撑能力,对于提升系统安全、稳定、经济化运行具有重要意义.为阐明点对网的惯性支撑能力在线监测方法的基本原理,首先对以摇摆方程为基础的电力系统等效惯性常数定义及现有在线监测方法进行回顾;然后,为弥补现有在线监测方法在准确性上的欠缺,创新性地提出基于回归法的等效惯性常数辨识方法,并与在线惯量监测方法结合,构建基于同步相量测量单元的新型电力系统点对网惯性支撑能力在线监测的系统性方法;最后,利用改进的新英格兰10机39节点系统仿真分析,论证了该惯性支撑能力在线监测方法的实时性、准确性及其对新型电力系统的适用性.

关键词: 新型电力系统, 惯量监测, 虚拟同步电机, 等效惯性常数

Abstract:

An accurate and timely monitoring for the inertia support capability of the point of interconnection of aggregated sources to the grid in a low-inertia new power system is crucial for the safety, stability, and economic operation of the system. In order to explain the basic idea of the online point-to-grid inertia monitoring method, the definition of inertia of power system based on the swing equation and existing online monitoring methods are analyzed. Then, in order to improve the accuracy of the existing online inertia monitoring method, an equivalent inertia constant identification method based on the regression method is developed. Combining the proposed inertia constant identification method with the online inertia monitoring method, a systematic method for online monitoring of the inertia support capacity of point-to-grid in new power system is developed based on synchronous phasor measurement units. Finally, the simulation analysis of a modified New England 10-machine 39-bus system proves the accuracy and the feasibility of the developed real-time inertia monitoring method for the new power system.

Key words: new power system, inertia monitoring, virtual synchronous generator, equivalent inertia constant

中图分类号:

TM712

邓小宇, 刘牧阳, 常喜强, 南东亮, 莫若, 陈俊儒. 新型电力系统点对网惯性支撑能力在线监测方法[J]. 上海交通大学学报, 2024, 58(9): 1390-1399.

DENG Xiaoyu, LIU Muyang, CHANG Xiqiang, NAN Dongliang, MO Ruo, CHEN Junru. Online Monitoring Method for Inertial Support Capacity of Point-to-Grid in New Power Systems[J]. Journal of Shanghai Jiao Tong University, 2024, 58(9): 1390-1399.

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母线序号	发电机编号	装机量/MW	有功出力/MW
33	4号VSG	1000	632
35	6号VSG	1000	650
37	1号WPP	606	540
38	2号WPP	900	830

编号	母线	发电机编号	等效惯性常数/ [MW·s·(MV·A)^-1]
1	39	1号G	100
2	31	2号G	60.6
3	32	3号G	71.6
4	34	5号G	52
5	36	7号G	52.8
6	33	4号VSG	120
7	35	6号VSG	100

VSG	时间窗口	H^*/[MW·s· (MV·A)^-1]	H/[MW·s· (MV·A^-1)]	ψ/%
4号	1	100.20	100.00	0.20
	2	70.33	70.00	0.48
6号	1	120.39	120.00	0.33
	2	150.63	150.00	0.42

新型电力系统点对网惯性支撑能力在线监测方法

Online Monitoring Method for Inertial Support Capacity of Point-to-Grid in New Power Systems

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