Method for generating cable shaft fire state identification decision tree model
A technology for cable shaft and state recognition, which is applied in character and pattern recognition, pattern recognition in signals, and measurement of electrical variables. It can solve problems such as slow response speed, poor monitoring effect, and high requirements for equipment accuracy, and achieve fast response speed. , strong real-time performance, and the effect of reducing precision requirements
Pending Publication Date: 2021-03-12
SHENZHEN POWER SUPPLY BUREAU
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[0003] The purpose of the present invention is to propose a method for generating a decision tree model for fire state identification in cable shafts, so as to solve the existing technical problems of high equipment precision requirements, poor monitoring effect, and slow response speed
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0030] Such as figure 1 As shown, it is a schematic diagram of an embodiment of a method for generating a decision tree model for identifying a fire state in a cable shaft provided by the present invention. In this embodiment, the method includes the steps of:
[0031] Step S1, collect the residual current value and residual voltage value of the cable in the cable shaft, and obtain the voltage waveform of the residual voltage value; and obtain the resistive residual current component in the residual current according to the residual current value, and obtain the voltage waveform of the residual voltage value according to the residual current value Acquiring arc fault characteristics of residual voltage;
[0032] It can be understood that the residual current val...
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The invention provides a method for generating a cable shaft fire state recognition decision tree model. The method comprises the steps: S1, collecting a residual current value and a residual voltagevalue of a cable in a cable shaft, obtaining a resistive residual current component in the residual current, and obtaining a fault arc feature of the residual voltage; S2, acquiring an ultrasonic signal generated by partial discharge in the cable shaft, and positioning according to the ultrasonic signal to determine the magnitude and position of the partial discharge as partial discharge information; S3, collecting the environment temperature, the detection point temperature and the smoke concentration in the cable shaft are collected; S4, evaluating the feature items through a preset rule togenerate an evaluation result; inputting the evaluation result and the input corresponding features as training data into a preset model for training to generate a decision tree model. According to the invention, the precision requirement of monitoring equipment is effectively reduced, the real-time performance is strong, the monitoring effect is good, and the response speed is fast.
Description
technical field [0001] The invention relates to the technical field of power system automation, in particular to a method for generating a decision tree model for identifying a fire state in a cable shaft. Background technique [0002] The cable shaft is a vertical shaft through which all kinds of wires and cables in the building pass through the floor (including the floor power distribution room). distribution hub. Most of the wires, cables and equipment in the cable shaft contain flammable and combustible materials, and there is a risk of fire caused by live operation. Once a fire accident occurs in the cable, the fire will develop rapidly and spread quickly, causing serious safety accidents and economic losses. Existing patents for fire prediction systems for cable shafts mainly determine whether a fire has broken out by detecting the temperature and smoke in the shaft. The method of judging based on smoke and temperature has certain limitations. The appearance of smoke...
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IPC IPC(8): G06F30/27G06K9/00G06K9/62G06Q50/06G01R19/00G01R31/12G06F113/16
CPCG06F30/27G06Q50/06G01R31/1209G01R19/00G06F2113/16G06F2218/14G06F2218/10G06F18/24323
Inventor 阳浩李喆李基民黄湛华徐启源
Owner SHENZHEN POWER SUPPLY BUREAU