Research on Micro-grid Demand Response Based on Static Voltage Stability
Island micro-grid system is expected to play an important role of smart grid in the future, its voltage stability and operation security have been drowning great attention from power department institutes. In this paper, a power flow calculation model of island micro-grid with droop control mode was...
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| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Control and Information Technology
2020-01-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2020.06.010 |
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| Summary: | Island micro-grid system is expected to play an important role of smart grid in the future, its voltage stability and operation security have been drowning great attention from power department institutes. In this paper, a power flow calculation model of island micro-grid with droop control mode was constructed firstly, and the voltage stability L-index of each branch was obtained according to the power flow results. Based on voltage stability L-index, a demand response model of branch reactive load was proposed. Finally, the impacts of load capacity of demand response and location of distributed generation (DG) on demand response results were analyzed respectively. Experimental results show that the demand response based on L-index of voltage stability has a positive effect on the voltage stability of the system, which makes branch load with the trend from high L index to low L index. However, the extent of influence is restricted by the load capacity of demand response and sharing principle of node load. Meanwhile, the influence of DG location on system voltage stability can not be ignored due to changing system load and power flow distribution. |
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| ISSN: | 2096-5427 |