A system for online monitoring of the capacitor temperature of an uninterruptible power supply in operation
A technology of resistance temperature in operation, applied in the direction of thermometers, thermometers, measuring devices, etc., which use electrical/magnetic components directly sensitive to heat, which can solve the problem of inability to monitor the temperature of capacitors
Active Publication Date: 2016-12-21
CHINA TELECOM CORP LTD
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[0012] In the system for on-line monitoring of the capacitance temperature of the uninterruptible power supply in operation provided by the embodiment of the present invention, since the linear temperature sensor probe used for accurate temperature measurement and the alarm temperature sensor probe used for alarm are directly arranged in each UPS internal Capacitor surface, so not only can directly measure the surface temperature of each capacitor in the UPS in the working state, but also can send a warning message in time through the alarm when the capacitor is working abnormally, that is, when the surface temperature of each capacitor is too high, which solves the problem In the prior art, it is impossible to monitor the temperature of the capacitor in the UPS in the working state
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[0018] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention.
[0019] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0020] From the characteristics of electrolytic capacitor materials and use experience, the aging process of large-capacity electrolytic capacitors in UPS equipment is often accompanied by the internal temperature rise process of electrolytic capacitors, that is to say, the change of the internal temperature of the capacitor is a key signal of capacitance change. When the internal temperature of the capacitor rises, the heat will increase. ...
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The embodiment of the invention discloses a system for on-line monitoring of the capacitor temperature of a running UPS. The system includes setting a linear temperature sensor probe and an alarm temperature sensor probe on the surface of each capacitor in the UPS; setting a linear temperature sensor probe in the air around the capacitor in the UPS; setting each linear temperature sensor probe on the surface of the capacitor The cables of the linear temperature sensor probes set in the air around the capacitor are respectively extended to the outside of the UPS case, and connected with the resistance temperature collector, temperature measurement circuit and display in turn; the alarm temperature sensor probes set on the surface of each capacitor are connected to each other. Connected in series, after being connected in series, it is extended to the outside of the UPS case through the cable, and connected to the resistance temperature collector and temperature alarm in turn. The embodiment of the present invention can not only measure the temperature of the internal capacitors of the UPS in the working state, but also send warning information in time when each capacitor is abnormal.
Description
technical field [0001] The invention relates to the field of communication power supplies, in particular to a system for on-line monitoring of the capacitor temperature of an uninterruptible power supply in operation. Background technique [0002] UPS (Uninterruptible Power Supply, uninterruptible power supply) equipment is a backup AC power supply equipment widely used in the communication field. UPS equipment needs to connect several large-capacity electrolytic capacitors with a capacity of up to 1000 microfarads or even tens of thousands of microfarads to its AC input terminal, DC terminal and AC output terminal to meet the working needs of UPS power supply filtering, energy storage and voltage stabilization. [0003] One of the main defects of electrolytic capacitors is that they are susceptible to accelerated aging and quality degradation due to the influence of power clutter, harmonics and temperature. However, once a large-capacity electrolytic capacitor is severely ...
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IPC IPC(8): G01K7/02G01K7/22
Inventor 赖世能冯娟娟侯福平
Owner CHINA TELECOM CORP LTD