发明名称 |
MONITORING SYSTEM FOR THE CAPACITOR BATTERIES OF A THREE-PHASE FILTER CIRCUIT |
摘要 |
<p>A system for monitoring the capacitor batteries of a three-phase filter circuit. Each capacitor battery is formed of a plurality of parallel legs each having a plurality of sectional capacitors which are connected in series with fuses. Adjacent ones of the sectional capacitors are coupled to one another. In a three-phase system, three capacitor batteries are coupled to one another in a Y-circuit configuration, the Y-circuit node being coupled to a reference potential, illustratively ground. The magnitude and phase of the fundamental frequency component of the current flowing from the Y-circuit node to the reference potential is monitored, variations therein being evaluated to identify defective sectional capacitors. Only variations in the Y-circuit node current which occur rapidly will trigger fault signals, thereby preventing false indications resulting from variations in temperature.</p> |
申请公布号 |
CA1189145(A) |
申请公布日期 |
1985.06.18 |
申请号 |
CA19810378309 |
申请日期 |
1981.05.26 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
BECKER, MICHAEL;FENDT, ALFONS;POVH, DUSAN;RENZ, KLAUS;SCHUCH, GERHARD;WALDMANN, HERMANN |
分类号 |
G01R31/00;H02H3/36;H02H3/44;H02H7/16;(IPC1-7):G01R23/00;G01R11/52;G01R27/00 |
主分类号 |
G01R31/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|