| 引用本文: | 卢一菲,陈 冲,金成日,阎其业.直驱永磁风电机组高电压穿越协调控制策略[J].电力系统保护与控制,2020,48(15):50-60.[点击复制] |
| LU Yifei,CHEN Chong,JIN Chengri,YAN Qiye.HVRT coordinated control strategy of a direct-driven PMSG[J].Power System Protection and Control,2020,48(15):50-60[点击复制] |
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| 摘要: |
| 提出直驱永磁风电机组高电压故障穿越控制策略。分析直驱永磁风电机组暂态运行特性，研究变流器运行不同区域的电压向量关系，分析直流电容电压跃升机理。设计直驱永磁风电机组上层控制策略，实现机网侧变流器执行层的dq功率参考值由不同机端电压跃升度决定。PSCAD/EMTDC中的仿真结果表明：机端电压跃升幅度较小时，该控制策略不仅可确保直驱永磁风电机组直流电容电压稳定在安全值以内，且在不影响风电机组向电网注入有功功率的同时，还可向故障点注入一定感性无功功率，支撑母线故障电压恢复；机端电压跃升幅度较大时，该控制策略通过网侧变流器向电网注入容性无功功率防止直流电容电压越限，在满足变流器容量约束条件的前提下，向电网注入有功功率。 |
| 关键词: 直驱永磁风电机组 高电压穿越 故障 控制策略 电压跃升 |
| DOI：DOI: 10.19783/j.cnki.pspc.190427 |
| 投稿时间：2019-06-17修订日期：2019-11-20 |
| 基金项目:国家电网公司科技项目资助(2017-2020)“超大容量电池储能电站并网运行关键技术及应用” |
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| HVRT coordinated control strategy of a direct-driven PMSG |
| LU Yifei,CHEN Chong,JIN Chengri,YAN Qiye |
| (1. School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China;
2. Beijing NEGO Automation Technology Co., Ltd., Beijing 100044, China;
3. Dalian Concurrent Energy Storage Power Station Co., Ltd., Dalian 116083, China) |
| Abstract: |
| A high-voltage-fault ride-through control strategy for a Direct-Driven PMSG (D-PMSG) is proposed. The transient operating characteristics of D-PMSG are analyzed, and then the voltage vector relationship of different regions of the converter is studied. Simultaneously, the jump mechanism of the DC capacitor voltage is analyzed. The designed upper control strategy of the D-PMSG can show that the dq power reference value of the execution layer of the generator-converter and grid-converter depends on different jump levels of terminal voltage. The simulation results in PSCAD/EMTDC show that when the jump level of terminal voltage is small, not only can the control strategy ensure that the DC capacitor voltage of D-PMSG is within the safe value, but also that the D-PMSG is able to inject active power into the grid. At the same time, a certain inductive reactive power can be also injected into the fault point to support the bus fault voltage recovery. When the terminal voltage jumps a large amount, the control strategy makes the grid-side converter inject the capacitive reactive power into the grid to prevent the DC capacitor voltage exceeding the limit value. The active power is issued into the grid under the premise of satisfying the constraints of the converter capacity.
This work is supported by Science and Technology Project of State Grid Corporation of China (No. 2017-2020) “Key Technology and Application of Super Large Capacity Energy Storage Station Integration and Operation”. |
| Key words: D-PMSG HVRT fault control strategy voltage jump |
