Inertia characteristics and the real-time sensing technology of new-type power systems
Integration of new energy sources will continuously encroach upon the startup capacity of conventional units， reducing system’s rotational inertia and frequency regulation capabilities. This leads to accelerated frequency changes and increased fluctuation amplitudes. Therefore， it is imperative for...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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zhejiang electric power
2024-02-01
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| Series: | Zhejiang dianli |
| Subjects: | |
| Online Access: | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=b9640e65-e613-4a98-823f-f8c3ed0ca8a3 |
| _version_ | 1797272209306157056 |
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| author | MA Junchao LU Chengyu WANG Chenxu FENG Qifan XIA Yanghong PENG Yan |
| author_facet | MA Junchao LU Chengyu WANG Chenxu FENG Qifan XIA Yanghong PENG Yan |
| author_sort | MA Junchao |
| collection | DOAJ |
| description | Integration of new energy sources will continuously encroach upon the startup capacity of conventional units， reducing system’s rotational inertia and frequency regulation capabilities. This leads to accelerated frequency changes and increased fluctuation amplitudes. Therefore， it is imperative for new energy units to provide active inertia support. However， the dynamic characteristics of new energy units differ significantly from synchronous generators， making traditional swing equations inadequate to fully reflect the dynamic process of frequency response in new-type power systems after disturbances. Therefore， an inertia model for new-type power systems is established to accurately characterize the inertia response process of synchronous generators， grid-following inverters， and grid-forming inverters. A real-time inertia measurement method is proposed， which employs an improved polynomial curve fitting method （PCFM） and system identification method to accurately identify the system’s rotational inertia and regional inertia. Finally， through simulation， a quantitative assessment of the equivalent inertia of new-type power systems is conducted， and the effectiveness of the proposed measurement method and mathematical model is validated. |
| first_indexed | 2024-03-07T14:25:05Z |
| format | Article |
| id | doaj.art-4518633df8a24edfaabf6b1e57e82d60 |
| institution | Directory Open Access Journal |
| issn | 1007-1881 |
| language | zho |
| last_indexed | 2024-03-07T14:25:05Z |
| publishDate | 2024-02-01 |
| publisher | zhejiang electric power |
| record_format | Article |
| series | Zhejiang dianli |
| spelling | doaj.art-4518633df8a24edfaabf6b1e57e82d602024-03-06T08:16:12Zzhozhejiang electric powerZhejiang dianli1007-18812024-02-0143211210.19585/j.zjdl.2024020011007-1881（2024）02-0001-12Inertia characteristics and the real-time sensing technology of new-type power systemsMA Junchao0LU Chengyu1WANG Chenxu2FENG Qifan3XIA Yanghong4PENG Yan5State Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaState Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, ChinaIntegration of new energy sources will continuously encroach upon the startup capacity of conventional units， reducing system’s rotational inertia and frequency regulation capabilities. This leads to accelerated frequency changes and increased fluctuation amplitudes. Therefore， it is imperative for new energy units to provide active inertia support. However， the dynamic characteristics of new energy units differ significantly from synchronous generators， making traditional swing equations inadequate to fully reflect the dynamic process of frequency response in new-type power systems after disturbances. Therefore， an inertia model for new-type power systems is established to accurately characterize the inertia response process of synchronous generators， grid-following inverters， and grid-forming inverters. A real-time inertia measurement method is proposed， which employs an improved polynomial curve fitting method （PCFM） and system identification method to accurately identify the system’s rotational inertia and regional inertia. Finally， through simulation， a quantitative assessment of the equivalent inertia of new-type power systems is conducted， and the effectiveness of the proposed measurement method and mathematical model is validated.https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=b9640e65-e613-4a98-823f-f8c3ed0ca8a3inertia of power systemfrequency responsevirtual inertiainertia estimationstep response |
| spellingShingle | MA Junchao LU Chengyu WANG Chenxu FENG Qifan XIA Yanghong PENG Yan Inertia characteristics and the real-time sensing technology of new-type power systems Zhejiang dianli inertia of power system frequency response virtual inertia inertia estimation step response |
| title | Inertia characteristics and the real-time sensing technology of new-type power systems |
| title_full | Inertia characteristics and the real-time sensing technology of new-type power systems |
| title_fullStr | Inertia characteristics and the real-time sensing technology of new-type power systems |
| title_full_unstemmed | Inertia characteristics and the real-time sensing technology of new-type power systems |
| title_short | Inertia characteristics and the real-time sensing technology of new-type power systems |
| title_sort | inertia characteristics and the real time sensing technology of new type power systems |
| topic | inertia of power system frequency response virtual inertia inertia estimation step response |
| url | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=b9640e65-e613-4a98-823f-f8c3ed0ca8a3 |
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