杨昌兴,王敏
YANG Chang-xing,WANG Ming

• 1:苏杭电气科学研究所
• 2:浙江省电力公司 江苏吴江215228
• 3:浙江杭州31007

摘要(Abstract)：

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 reˉduced;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.

关键词(KeyWords)： 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

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨昌兴,王敏
YANG Chang-xing,WANG Ming

DOI: 10.19585/j.zjdl.2005.06.002

参考文献(References)：

• 田友元.关于并联电容器熔丝保护标准的异议和运行事故两则[C].电力电容器学会论文集,2002.
• 史班,周国良.并联电容器熔断器保护及其与不平衡保护的配合问题[J].浙江电力,2002(1):14-15.