在使用三层ZSC-CASI-CADI框架的双感应发电机中检测,区分和定位旋转绕故障
Muhammad Shahzad Aziz1, Jianzhong Zhang1, Sarvarbek Ruzimov1
1School of Electrical Engineering, Southeast University, Nanjing 210096, China.
一个新的框架可以准确地检测和区分双引入发电机 (DFIG) 中的转子绕线故障. 这种方法精确地定位了故障相,提高了变速能源系统的可靠性.
科学领域:
- 电气工程 电气工程
- 电力系统 电力系统
- 机器诊断 机器诊断 机器诊断
背景情况:
- 双输电感应发电机 (DFIG) 对变速能源系统至关重要.
- 转子绕线故障,如高阻力连接 (HRC) 和间转短路 (ITSC),由于类似的电流扭曲和DFIG运行动态,造成了重大挑战.
- 可靠的故障检测对于系统弹性至关重要.
研究的目的:
- 提出一种新的三层诊断框架 (ZSC-CASI-CADI),用于DFIG中全面诊断旋转机绕线故障.
- 为了实现准确的检测,分辨故障类型,并定位故障阶段.
主要方法:
- 该ZSC-CASI-CADI框架使用三相转子电流和转子零序电流 (ZSC).
- 故障检测是使用ZSC大小进行的.
- 坐标角扩散指标 (CASI) 通过分析转子电流相位分散来区分HRC与ITSC故障.
- 当前角度差异指标 (CADI) 根据角度偏差识别特定的故障阶段.
主要成果:
- 广泛的模拟验证了框架的准确性和实时功能.
- 该方法在各种操作条件下 (次同步和超同步模式) 成功检测,区分和定位DFIG转子绕线故障.
- 该框架在不同的负载和转子转速场景中证明了有效性.
结论:
- 拟议的 ZSC-CASI-CADI 框架为 DFIG 转子上故障监测提供了一种轻便而有效的解决方案.
- 这种方法提高了可变速度能源系统的可靠性和弹性,通过实现快速和精确的故障管理.
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