| OSCILLATION STABILITY |
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Wide-area measurement and early warning system for wide-band oscillations in “double-high” power systems |
| MA Ningning1, XIE Xiaorong1, TANG Jian2, CHEN Lei1 |
1. State Key Lab of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;
2. State Grid East Inner Mongolia Electric Power Supply Co., Ltd., Hohhot 010010, China |
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Abstract The wide-band oscillation problem caused by the high penetration of renewable energy sources and the high proportion of power electronic equipment, “double-high” systems, seriously affects normal power equipment operation and power system stability. Such systems require on-line monitoring and analyses of the multi-mode and time-varying wide-band oscillation frequency. Traditional wide-area measurement systems (WAMS) can monitor low-frequency oscillations in power grids in real-time. However, they cannot monitor wide-band electromagnetic oscillations. This paper presents a wide-area measurement and early warning system (WAMWS) for monitoring wide-band oscillations in “double-high” power systems. This system has all the functions in the existing WAMS while monitoring wide-band oscillations in “double-high” power systems. The warning system provides wide-band state estimates, oscillation source identification, and security and stability evaluations of the wide-band oscillations. The effectiveness of this system for monitoring wide-band oscillations is verified in simulations. Finally, this paper considers applications of WAMWS.
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| Keywords
“double-high” power systems
renewable power generation
power electronic equipment
wide-band oscillations
wide-area measurement and early warning systems
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Issue Date: 25 April 2021
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2021,
Vol. 61
