发明申请
- 专利标题： Determining an operational limit of a power transmision line
- 专利标题（中）： 确定功率传输线的工作极限
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申请号： US10499701申请日： 2002-12-11
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公开(公告)号： US20050222808A1公开(公告)日： 2005-10-06
- 发明人: Marek Zima , Christian Rehtanz , Mats Larsson
- 申请人： Marek Zima , Christian Rehtanz , Mats Larsson
- 申请人地址： CH Baden CH-5400
- 专利权人： ABB SCHWEIZ AG
- 当前专利权人： ABB SCHWEIZ AG
- 当前专利权人地址： CH Baden CH-5400
- 优先权： EP01811254.0 20011221
- 国际申请： PCT/CH02/00682 WO 20021211
- 主分类号： H02H3/40
- IPC分类号： H02H3/40 ; H02H6/00 ; H02H7/22 ; G06F19/00
摘要：
In a method, computer program and system for determining an operational limit of a power transmission line, time-stamped current phasor information and voltage phasor information for a first end and a second end of the line are determined, an ohmic resistance of the line is computed from the phasor information, and an average line temperature is computed from the ohmic resistance. This allows to determine the average line temperature without dedicated temperature sensors. The average line temperature represents the actual average temperature and is largely independent of assumptions regarding line parameters.
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