WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer
In the event of a generator loss or disturbance, the power system frequency declines quickly and overall system stability is at risk. During these scenarios, under frequency load shedding is triggered to restore the power system frequency. The main stage of modern adaptive under frequency load shedd...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/9/5/990 |
| _version_ | 1811217021333929984 |
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| author | Hassan Haes Alhelou Mohamad Esmail Hamedani Golshan Takawira Cuthbert Njenda Pierluigi Siano |
| author_facet | Hassan Haes Alhelou Mohamad Esmail Hamedani Golshan Takawira Cuthbert Njenda Pierluigi Siano |
| author_sort | Hassan Haes Alhelou |
| collection | DOAJ |
| description | In the event of a generator loss or disturbance, the power system frequency declines quickly and overall system stability is at risk. During these scenarios, under frequency load shedding is triggered to restore the power system frequency. The main stage of modern adaptive under frequency load shedding techniques is disturbance estimation. However, the swing equation is widely used in disturbance estimation but has some critical estimation errors. In this paper, instead of using the swing equation we proposed the use of a disturbance observer to estimate the curtailed power. By making use of wide area measurements, a system frequency response model, which is a representative of the whole power system, can be realized in real time. Using different power system states of the developed model, a disturbance observer can be designed as well. The main advantage of the disturbance observer is that it can accurately estimate the disturbance magnitude and its location in a very short time. Further investigations show that by using the disturbance observer disturbances, which occur at the same time or at different times in different areas regardless of the magnitude or size, accurate estimations can be made. To ascertain the efficiency of the proposed scheme, simulations are done for a four-area power system using Matlab/Simulink. |
| first_indexed | 2024-04-12T06:46:58Z |
| format | Article |
| id | doaj.art-699fe224d65049c98c9ae6fe4232ea29 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-12T06:46:58Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-699fe224d65049c98c9ae6fe4232ea292022-12-22T03:43:31ZengMDPI AGApplied Sciences2076-34172019-03-019599010.3390/app9050990app9050990WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance ObserverHassan Haes Alhelou0Mohamad Esmail Hamedani Golshan1Takawira Cuthbert Njenda2Pierluigi Siano3Department of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranDepartment of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranDepartment of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranDepartment of Management & Innovation Systems, University of Salerno, 84084 Salerno, ItalyIn the event of a generator loss or disturbance, the power system frequency declines quickly and overall system stability is at risk. During these scenarios, under frequency load shedding is triggered to restore the power system frequency. The main stage of modern adaptive under frequency load shedding techniques is disturbance estimation. However, the swing equation is widely used in disturbance estimation but has some critical estimation errors. In this paper, instead of using the swing equation we proposed the use of a disturbance observer to estimate the curtailed power. By making use of wide area measurements, a system frequency response model, which is a representative of the whole power system, can be realized in real time. Using different power system states of the developed model, a disturbance observer can be designed as well. The main advantage of the disturbance observer is that it can accurately estimate the disturbance magnitude and its location in a very short time. Further investigations show that by using the disturbance observer disturbances, which occur at the same time or at different times in different areas regardless of the magnitude or size, accurate estimations can be made. To ascertain the efficiency of the proposed scheme, simulations are done for a four-area power system using Matlab/Simulink.http://www.mdpi.com/2076-3417/9/5/990disturbance estimationdisturbance observerswing equation |
| spellingShingle | Hassan Haes Alhelou Mohamad Esmail Hamedani Golshan Takawira Cuthbert Njenda Pierluigi Siano WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer Applied Sciences disturbance estimation disturbance observer swing equation |
| title | WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer |
| title_full | WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer |
| title_fullStr | WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer |
| title_full_unstemmed | WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer |
| title_short | WAMS-Based Online Disturbance Estimation in Interconnected Power Systems Using Disturbance Observer |
| title_sort | wams based online disturbance estimation in interconnected power systems using disturbance observer |
| topic | disturbance estimation disturbance observer swing equation |
| url | http://www.mdpi.com/2076-3417/9/5/990 |
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