| 引用本文: | 贾轩涛,史博伦,胡锦根,等.永富直流三种功率输送方式在线转换直流过电压仿真研究[J].电力系统保护与控制,2017,45(5):131-138.[点击复制] |
| JIA Xuantao,SHI Bolun,HU Jingen,et al.DC overvoltage simulation for online-switching of three power transmission modes in Yongfu HVDC project[J].Power System Protection and Control,2017,45(5):131-138[点击复制] |
|
| 摘要: |
| 永富工程在进行3种功率输送方式在线转换操作时会产生不同程度的直流过电压。为了研究在线转换操作对直流过电压影响，通过RTDS进行仿真，在不同直流功率水平下进行功率输送方式的在线转换操作试验。根据试验数据和波形，研究分析了直流操作过电压发生的规律和原因，确定了功率输送方式在线转换操作的安全功率水平值。并得出如下结论:直流操作过电压水平与直流输送功率成正比例关系，在安全功率水平下进行在线转换操作可以避免出现较大操作过电压。研究结果为工程以后的实际运行提供了参考和借鉴价值。 |
| 关键词: 直流输电工程 功率传输模式 操作过电压 顺序控制 在线转换 |
| DOI：10.7667/PSPC151925 |
| 投稿时间：2015-11-02修订日期：2016-03-21 |
| 基金项目: |
|
| DC overvoltage simulation for online-switching of three power transmission modes in Yongfu HVDC project |
| JIA Xuantao,SHI Bolun,HU Jingen,ZHANG Bo,MIAO Yu,JIA Hongguang |
| (Maintenance Company of State Grid Zhejiang Electric Power Company, Hangzhou 310018, China;Department of Automation, Harbin Engineering University, Harbin 150001, China) |
| Abstract: |
| The different levels of DC overvotage are happened when online-switching of three power transmission modes is operated in Yongfu HVDC project. In order to research the influence of online-switching operation on DC overvoltage, based on the simulation of Real-Time Digital Simulator (RTDS), the online-switching tests are done at different DC power levels. According to the test data, the law and reason of DC switching overvoltage are studied, the safe power level value can be determined, and the following conclusion is drawn:it’s proportional relationship between the level of DC switching overvoltage and the DC transmission power, higher DC switching overvoltage can be avoided when the online-switching operation is under the safe power level. The research results provide reference values for the practical operation of the project. |
| Key words: HVDC project power transmission mode switching overvoltage sequence control online-switching |
