Cable fire protection judgment method and system for fire control linkage

A fire-fighting linkage and cable technology, applied in fire rescue and other directions, can solve problems such as misoperation of fire-fighting equipment, and achieve the effect of improving the ability to prevent misoperation, improving the judgment logic of cable fire protection and accurate logical judgment.

CN110917528APending Publication Date: 2020-03-27STATE GRID NINGXIA ELECTRIC POWER CO +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-03-27

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Abstract

The invention provides a cable fire protection judgment method and system for fire control linkage. The cable fire protection judgment method comprises the following steps of acquiring a monitoring signal outputted by a fire control sensor in the coverage area of a cable, and judging whether a fire happens or not; acquiring and judging whether a status signal of a switch in the cable is a normallyclosed status signal or not, wherein the switch is used for on-off connection between the cable and a power grid; acquiring and judging whether the voltage and the current of the cable are 0 or not;and if the fire happens, the status signal of the switch is the normally closed status signal, and the voltage and the current are 0, outputting a firefighting equipment action allowing signal, and ifno fire happens, outputting a firefighting equipment action inhibiting signal. The cable fire protection judgment method and system for fire control linkage combine the multiple signals such as a fire signal, a normally closed status signal, the voltage and the current and perform logical judgment, so that under the condition that four conditions are met, the action protection signal, namely thefirefighting equipment action allowing signal is only outputted, the logical judgment is more accurate, and the false action prevention capacity is improved.
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Description

technical field

[0001] The invention relates to the field of electric fire protection, in particular to a method and system for judging cable fire protection for fire linkage. Background technique

[0002] Since the insulation layer of the power cable is composed of various combustible substances, there is a possibility of explosion and fire, and once the cable catches fire, the fire will be fierce and spread rapidly, and a large amount of harmful gas will be generated during combustion. It is difficult to fight fires, and after burning out, the repair time is long and the loss is serious. Therefore, cable fire protection is a very important task.

[0003] At present, the judgment logic of cable fire protection is relatively simple. Generally, only the alarm signal of the fire sensor and the switch signal of the transformer are used as the judgment logic of the fire protection action to determine the input signal of the fire protection action. However, because the alarm sig...

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in the preferred embodiment are only for convenience of description, and are not used to limit the scope of the present invention. The scope of implementation and the change or adjustment of its relative relationship shall also be regarded as the scope of implementation of the present invention without substantive changes in technical content.

[0041] Such as figure 1 As shown, the present invention provides a method for judging cable fire protection for fire linkage, comprising the following steps:

[0042] Step S101, obtaining the monitoring signal output by the fire sensor within the coverage of the cable, and judging whether there is a fire;

[0043] In the specific implementation, the fire sensor is provided with X in the cable coverage area, and the detection sign...