摘要
通过对外熔丝保护性能与电容器组接线方式关系的分析研究,揭示保护灵敏度降低的主要原因是:电容器组在故障状态下中性点电位发生飘移、随着串联段数增加故障段分压比降低。提出增加电容器并联台数和增加电容器内部元件串联段数是提高保护灵敏度的有效措施;阐述外熔丝在电容器发生故障时的保护作用与特性行为,以及确保其相关技术性能的重要性。
By means of studying on relationship between performance of external fuse protection and connection mode of capacitor group, this paper reveals the main reasons on making protection sensitivity reduced; excursion of center voltage potential while the capacitor group in fault and reduction of voltage proportion of fault section along With increasing series-wound section number. It puts forward that increasing the number of shunt capacitor and number of unit series section inside capacitor are effective measures to advance protection sensitivity; The protective action and characteristic of external fuse in the case of capacitor in fault are set forth, as well as the importance of insuring its correlative technical characteristic.
出处
《浙江电力》
2005年第6期5-8,25,共5页
Zhejiang Electric Power
关键词
并联电容器组
外熔丝
熔断器
保护性能
接线方式
shunt capacitor
external fuse
fuse
protection characteristic
connection mode
