电容式电压互感器-----外文翻译.doc

Capacitive Voltage Transformers (CVTs) are common in high-voltage transmission line applications. These same applications require fast, yet secure protection. However, as the requirement for faster protective relays grows, so does the concern over the poor transient response of some CVTs for certain system conditions.
Solid-state and microprocessor relays can respond to a CVT transient due to their high operating speed and increased sensitivity .This paper discusses CVT models whose purpose is to identify which major CVT components contribute to the CVT transient. Some surprises include a recommendation for CVT burden and the type of ferroresonance-suppression circuit that gives the least CVT transient.
This paper also reviews how the System Impedance Ratio (SIR) affects the CVT transient response. The higher the SIR, the worse the CVT transient for a given CVT .
Finally, this paper discusses improvements in relaying logic. The new method of detecting CVT transients is more precise than past detection methods and does not penalize distance

电容式电压互感器（CVTs）在高压输电线路应用中篅@＜Ｕ庑┫嗤挠τ眯枰焖俣野踩谋；ぁＨ欢捎诙愿斓谋；に俣鹊男枨蟮脑龀ぃ悸堑讲涣荚萏龆ㄓ靡恍〤VTs作为系统的必要条件。
固态继电器和微处理器继电器由于其高处理速度和灵敏度，能够响应暂态电容式电压互感器。此文阐述了旨在确定电容式电压互感器模型的主要组成部分对电容式电压互感器做出的贡献。一项电容式电压互感器的负荷建议和铁磁谐振抑制电路的类型，使电容式电压互感器暂态达到最小。