DOI:10.1007/s40565-017-0324-x |
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Coordinated voltage regulation of hybrid AC/DC medium voltage distribution networks |
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Net amount: 1172 |
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Author:
Lu ZHANG1, Ying CHEN1, Chen SHEN1, Wei TANG2, Jun LIANG3
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Author Affiliation:
1. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;
2. College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China;
3. School of Engineering, Cardiff University, Cardiff CF24 3AA, UK
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Abstract: |
In a hybrid AC/DC medium voltage distribution network, distributed generations (DGs), energy storage systems (ESSs), and the voltage source converters (VSCs) between AC and DC lines, have the ability to regulate node voltages in real-time. However, the voltage regulation abilities of above devices are limited by their ratings. And the voltage regulation efficiencies of these devices are also different. Besides, due to high r/x ratio, node voltages are influenced by both real and reactive power. In order to achieve the coordinated voltage regulation in a hybrid AC/ DC distribution network, a priority-based real-time control strategy is proposed based on the voltage control effect of real and reactive power adjustment. The equivalence of
real and reactive power adjustment on voltage control is considered in control area partition optimization, in which regulation efficiency and capability are taken as objectives. In order to accommodate more DGs, the coordination of controllable devices is achieved according to voltage sensitivities. Simulations studies are performed to verify the proposed method. |
Keywords: |
Hybrid AC/DC, Distribution network, Voltage control, Partition, Power system |
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Online Time:2018/05/10 |
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