| 引用本文: | 于 汀,蒲天骄,刘广一,常喜强,韩 巍,张 昭.含大规模风电的电网AVC研究与应用[J].电力自动化设备,2015,35(10): |
| YU Ting,PU Tianjiao,LIU Guangyi,CHANG Xiqiang,HAN Wei,ZHANG Zhao.AVC research and application for grid with large-scale wind power[J].Electric Power Automation Equipment,2015,35(10): |
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| 摘要: |
| 为满足大规模风电集中式接入下电网无功电压的控制要求，在电网自动电压控制（AVC）的基础上，研究实现风电区域无功电压的控制方法。首先改进传统支路电压稳定指标，建立仅依赖支路电压相量的在线静态电压稳定指标。在此基础上根据短期风功率变化趋势，分别建立考虑风电区域电压稳定的全网AVC联合优化模型和协调校正模型，并提出基于超短期风功率预测结果的风电并网点电压质量控制策略。应用于新疆电网的实际效果表明，所提出的无功电压控制方法在实现降低系统网损、维持负荷中心区域电压合格的同时，还有效地改善了风电区域的电压稳定性，提高了风电并网点的电压质量。 |
| 关键词: 风电 电压控制 稳定 优化 协调校正 风功率预测 电压质量 |
| DOI： |
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| 基金项目:国家电网公司科学技术项目（NY71-14 - 035） |
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| AVC research and application for grid with large-scale wind power |
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YU Ting1,2, PU Tianjiao2, LIU Guangyi2, CHANG Xiqiang3, HAN Wei2, ZHANG Zhao4
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1.School of Electrical Engineering and Information，Sichuan University，Chengdu 610065，China;2.China Electric Power Research Institute，Beijing 100192，China;3.State Grid Xinjiang Electric Power Company，Urumqi 830002，China;4.State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources，North China Electric Power University，Beijing 102206，China
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| Abstract: |
| In order to meet the requirement of the grid with large-scale centralized wind power for the control of reactive power and voltage，the control method of reactive power and voltage for the wind power region is researched and implemented based on the AVC（Automatic Voltage Control） of power grid. The traditional branch voltage stability index is improved，merely based on which，an online steady-state voltage stability index is set. An associated AVC optimization model and a coordinated correction model are respectively established for the whole grid，which considers the voltage stability of its wind power region，and a strategy of voltage quality control at PCC（Point of Common Coupling） based on the ultra short-term wind power forecast is proposed. The practical effect of its application in Xinjiang Power Grid shows that，the proposed control strategy not only decreases the system loss and maintains the qualified voltage of centralized load region，but also effectively improves the voltage stability of wind power region and enhances the voltage quality of PCC. |
| Key words: wind power voltage control stability optimization coordinated correction wind power forecast voltage quality |
