| XU Zhenyu(徐振宇)*,HUA Yongzhu**,CUI Jiadong**,LI Chuangwei**.[J].高技术通讯(英文),2024,30(2):138~145 |
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| Coordinated voltage regulation strategy of OLTC and BESS considering switching delay |
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| DOI：10. 3772 / j. issn. 1006-6748. 2024. 02. 004 |
| 中文关键词: |
| 英文关键词: distributed power generation, voltage regulation, distribution network, on-load tapcharger (OLTC), battery energy storage system (BESS) |
| 基金项目: |
| Author Name | Affiliation | | XU Zhenyu(徐振宇)* | ( * College of Information Science & Technology, Zhejiang Shuren University, Hangzhou 310015, P. R. China)
( ** The College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, P. R. China) | | HUA Yongzhu** | | | CUI Jiadong** | | | LI Chuangwei** | |
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| 中文摘要: |
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| 英文摘要: |
| When large-scale distributed renewable energy power generation systems are connected to the
power grid, the risk of grid voltage fluctuations and exceeding the limit increases greatly. Fortunately,
the on-load tap changer (OLTC)can adjust the transformer winding tap to maintain the secondary
side voltage within the normal range. However, the inevitable delay in switching transformer taps
makes it difficult to respond quickly to voltage fluctuations. Moreover, switching the transformer taps
frequently will decrease the service life of OLTC. In order to solve this critical issue, a cooperative
voltage regulation strategy applied between the battery energy storage systems (BESSs)and OLTSs. is
proposed By adjusting the charge and discharge power of BESSs, the OLTC can frequently switch the
transformer taps to achieve rapid voltage regulation. The effectiveness of the proposed coordinated
regulation strategy is verified in the IEEE 33 node distribution systems. The simulation results show
that the proposed coordinated regulation strategy can stabilize the voltage of the distribution network
within a normal range and reduce the frequency of tap switching, as such elongating the service life
of the equipment. |
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