发明名称 |
Apparatus and method for monitoring tap positions of load tap changer |
摘要 |
A load tap changer (LTC) having a plurality of windings is coupled to one of the primary and secondary windings of a power transformer in order to regulate the output voltage of the power transformer. The LTC includes a plurality of taps physically and electrically connected to the LTC windings and the transformer's output voltage is increased/decreased by moving along the taps a contacting element whose movement is controlled by a rotating shaft driven by a motor. The tap being contacted is determined by sensing the direction and number of shaft rotations and by checking the number of shaft rotations specified to go from a tap to the next tap being contacted. The time for a full rotation of the shaft is also measured. Also, the temperature of the tanks containing the LTC taps and the power transformer is measured for each tap position.
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申请公布号 |
US7417411(B2) |
申请公布日期 |
2008.08.26 |
申请号 |
US20060520821 |
申请日期 |
2006.09.13 |
申请人 |
ADVANCED POWER TECHNOLOGIES, LLC |
发明人 |
HOFFMAN GARY R.;TENNILLE THOMAS C. |
分类号 |
G05F1/147 |
主分类号 |
G05F1/147 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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