首页>
外国专利>
Renewable energy source system having a high-frequency fault component based distance protection system
Renewable energy source system having a high-frequency fault component based distance protection system
展开▼
机译:可再生能源系统具有基于高频故障组件的距离保护系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A distance protection system and method based on a high-frequency fault component is provided for a renewal energy source (RES) system. The voltage drop caused by a fault has a full frequency of components and this can be extracted by a wavelet transform. A frequency selection principle that renders high-frequency impedance models a stable impedance phase angle is determined. On this basis, internal and external faults with respect to a transmission line are determined by comparing the magnitude of a high-frequency operating voltage with the magnitude of a high-frequency voltage at the fault point. This disclosed protection system and method can eliminate the influence of frequency offset and weak feed of the RES system by using high-frequency signals generated by voltage drops at the fault point, and can also tolerate signal noises and fault resistance.
展开▼