Maintenance method for jamming condition of turning on and turning off of disconnecting switch
A technology of isolating switches and condition-based maintenance, which is applied in the field of power systems and can solve problems such as unsafe use of insulation shavings
Active Publication Date: 2014-09-17
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a state maintenance method for the disconnection jamming situation of the disconnector, which helps to solve the problems of unsafe use of the existing insulating shavings
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[0016] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.
[0017] refer to Figure 1 to Figure 3 , the present invention relates to a method for overhauling the state of a disconnector jamming situation, which is carried out according to the following steps:
[0018] 1) From the connection terminal of the motor power supply in the isolating switch mechanism box, the corresponding electrical signal can be collected through the current and voltage transformer;
[0019] 2) The current and voltage signals collected in the first step are transmitted to the mutual induction conditioning circuit, and finally connected to the ARM chip. ARM first performs analog-to-digital conversion on the current and voltage values, and then processes the digital signals to complete the current and voltage signals. Analog-to-digital conversi...
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The invention relates to a maintenance method for the jamming condition of turning on and turning off of a disconnecting switch. The maintenance method is characterized by comprising the steps: 1, a current and voltage transformer collects corresponding electric signals from the connection terminal of a motor power source in a disconnecting switch mechanism case; 2, the current and voltage signals collected in the step 1 are transmitted to a mutual inductance conditioning circuit and finally transmitted to an ARM chip, an ARM firstly carries out analog-digital conversion on current and voltage values and then processes digital signals to complete analog-digital conversion and digital adaptive filtering of the current and voltage signals, and obtained data are stored in a USB mobile storage device; 3, the data stored in a USB flash disk are copied to a computer with Labview and analyzed. According to the maintenance method, the jamming condition of a disconnecting link can be effectively analyzed, and the defect portion or damage portion of the disconnecting link can be located through analysis.
Description
technical field [0001] The invention relates to a state maintenance method for a disconnection jamming situation of an isolating switch, which is applied to a power system. Background technique [0002] There are two keys to implement condition-based maintenance: one is to correctly grasp the status of operating equipment, and the other is to formulate scientific and reasonable monitoring indicators. For the outdoor isolating switch of the substation, there are four main factors that affect its healthy operation: dirty porcelain bottle, heating of the current-carrying part, jamming of the transmission part, and internal damage of the porcelain bottle. [0003] There is currently no effective monitoring method for the sticking problem of the transmission part of the knife switch. It is mainly solved by improving the quality and anti-rust performance of the product, strengthening the installation and maintenance process, and using high-quality lubricating grease. [0004] At ...
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Inventor 熊胜源蒋云平刘涛谢育鹏
Owner STATE GRID CORP OF CHINA