Wide-Area Damping Cooperative Control Method of Low-Frequency Oscillations of Power Systems with Photovoltaic Stations
The grid integration of largescale new energy increases the risks of weakly damping oscillations. Considering the dynamics of synchronous generators and photovoltaic generations, this paper establishes a detailed small-signal model and analyzes the impact of photovoltaic generations on low-frequency...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2022-12-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202112114 |
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| Summary: | The grid integration of largescale new energy increases the risks of weakly damping oscillations. Considering the dynamics of synchronous generators and photovoltaic generations, this paper establishes a detailed small-signal model and analyzes the impact of photovoltaic generations on low-frequency oscillation modes. A wide-area damping control structure of low-frequency oscillations is proposed for power systems containing photovoltaic generations, so that photovoltaic generations and synchronous generators can dampen low-frequency oscillations. Based on the results of eigenvalue analysis, an optimization model of wide-area damping control parameters is proposed further Finally, the electromagnetic transient simulation model of four-generator and two-area system with photovoltaic station is built on the PSCAD/EMTDC platform. The time domain simulation results verify the effectiveness of this wide-area damping control method. |
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| ISSN: | 1004-9649 |