A method for monitoring abnormal loads of electric lines
A load monitoring and abnormal technology, applied in the direction of measuring electricity, only measuring current, measuring electrical variables, etc., can solve problems such as electrical circuit overload, people's property loss, and inability to realize safe electricity management, so as to facilitate electrical appliance management and ensure The effect of safe electricity use
Active Publication Date: 2020-10-02
SICHUAN ELECTRIC SHIELD SAFETY TECH LTD
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Problems solved by technology
[0002] Abnormal load is one of the important causes of electrical circuit overload and electrical fire, often causing huge property losses to people
However, there is currently no effective means for real-time monitoring of abnormal loads on electrical lines, which can neither prevent problems before they happen, nor achieve safe power management.
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[0014] All features disclosed in this specification, or all disclosed steps in a method or process, may be combined in any way except mutually exclusive features and / or steps.
[0015] Any feature disclosed in this specification, unless expressly stated otherwise, may be replaced by other equivalent or alternative features serving a similar purpose. That is, unless expressly stated otherwise, each feature is but one example of a series of equivalent or similar features.
[0016] like figure 1 As shown in the figure, a method for monitoring an abnormal load of an electrical circuit of the present invention includes the following steps: A. Continuously monitor the current value on the L line of the power consumption unit for a period of time through a current sensor and a controller, and the monitoring frequency is 3000 times per second, And calculate the maximum current value I and the maximum derivative W of the current change value per microsecond, this process can be called...
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The invention discloses an abnormal load monitoring method for an electrical circuit, and the method comprises the following steps: A, monitoring current values S of a line L of a power utilization unit in a certain time period through a current sensor and a controller, and calculating and obtaining a maximum current value I and a maximum derivative W of the change value per microsecond, wherein the monitoring frequency is 3000 times per second; B, continuing to monitor a current value of the power utilization unit in operation through the current sensor and the controller, and calculating thederivative V of the current change value per microsecond, wherein the monitoring frequency is 3000 times per second; C, comparing the current value S and the maximum current value I through the controller: determining that an abnormal load is loaded to the power utilization unit if S>=120%I, and W<=V<=30A / micron; D, controlling a relay through the controller to cut off the power supply of the power utilization unit if the abnormal load is loaded to the power utilization unit, and carrying out the power failure protection. The method can timely find the loading of the abnormal load through thereal-time monitoring of the current condition of the power utilization unit.
Description
technical field [0001] The present invention relates to a method for monitoring power consumption safety, in particular to a method for monitoring abnormal load of electrical lines. Background technique [0002] Abnormal loads are one of the important causes of electrical circuit overload and electrical fires, often causing huge property losses to people. However, there is currently no effective means to monitor the abnormal loads of electrical lines in real time, which leads to neither preventing problems before they occur, nor realizing safe power management. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a method for monitoring abnormal load of electrical lines, which can detect the abnormal load in time by monitoring the line current condition of the power consumption unit, so as to facilitate the supervision of electricity safety. [0004] In order to solve the above-mentioned technical problems, the presen...
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IPC IPC(8): G01R31/00G01R19/00
CPCG01R19/0092G01R31/00
Inventor 段守富喻元卿王跃胜冯成斌唐平唐俨罗雅兮张瑞
Owner SICHUAN ELECTRIC SHIELD SAFETY TECH LTD