CN116698134B - Safety monitoring system for operation of underground limited space of power grid - Google Patents
Safety monitoring system for operation of underground limited space of power grid Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 134
- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 30
- 239000001301 oxygen Substances 0.000 claims description 30
- 229910052760 oxygen Inorganic materials 0.000 claims description 30
- 238000004364 calculation method Methods 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 23
- 238000012423 maintenance Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 230000007613 environmental effect Effects 0.000 claims description 19
- 239000008280 blood Substances 0.000 claims description 18
- 210000004369 blood Anatomy 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 14
- 238000012937 correction Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 230000036772 blood pressure Effects 0.000 claims description 6
- 230000036541 health Effects 0.000 claims description 6
- 230000000241 respiratory effect Effects 0.000 claims description 6
- 230000036387 respiratory rate Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 4
- 231100000279 safety data Toxicity 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/0002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using ultrasonic means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
- A61B2503/20—Workers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
The invention relates to the field of monitoring of power grid underground limited space operation, and particularly discloses a power grid underground limited space operation safety monitoring system, which comprises the following components: the invention can timely and effectively discover potential safety hazards existing in the underground cable channel, effectively reduce the operation safety risk of the cable channel through data detection and analysis, provide timely data support and guidance for the overhaul of the cable channel, provide reliable safety support and guarantee for the operation of subsequent overhaulers, and simultaneously monitor the physical condition of each overhauler of the underground cable channel in real time and provide a firm and reliable support basis for the operation safety of the overhaulers of the underground cable channel.
Description
Technical Field
The invention relates to the technical field of monitoring of power grid underground limited space operation, in particular to a power grid underground limited space operation safety monitoring system.
Background
The power cable circuit gradually becomes an important component part of a main network in a power system, the safe and stable operation of the power cable plays a vital role in reliably supplying power to densely populated areas of cities and important users, most of the power cable circuits at present adopt a laying mode of combining a working well with a calandria, workers need to enter a cable channel virtually when carrying out operation, maintenance and overhaul work of a cable body and related accessories, and the operation in the cable channel belongs to limited space operation, so that the safety requirement on the operation environment of the cable channel is higher.
At present, the safety monitoring of underground limited space operation such as cable channels and the like has stronger limitations and defects, and the dimensions are as follows: 1. at present, when the operation safety monitoring of a limited underground space of a power grid is performed, the space structure of a cable channel is not analyzed and pertinently analyzed to a large extent, so that potential safety hazards existing in the underground cable channel cannot be timely and effectively found, the main body space of the underground cable channel is hidden under the ground, the born external force effect of the main body space can cause the deformation of a space physical structure to a certain extent, the analysis of the dimension is lacking, the safety risk of the cable channel is indirectly increased, timely data support and guidance cannot be provided for the overhaul of the cable channel, and reliable safety support guarantee cannot be provided for the operation of subsequent overhaulers.
2. At present, in the early stage of operation safety monitoring of an underground cable channel, the analysis attention degree of main power equipment put into operation for the cable channel is relatively insufficient, for example, safety monitoring of a power transmission cable is carried out, the power transmission cable is used as main power equipment laid for the underground cable channel, the stability of the running state of the power transmission cable is an important factor influencing the stability of power transmission, if the accurate safety data monitoring analysis is not carried out on the power cable, the fault existing in the power cable cannot be timely found, the transmission loss of power is increased, and meanwhile, the occurrence rate of operation accident risks caused by incapability of timely finding and solving the potential safety hazard of the power cable is also improved.
Disclosure of Invention
In order to overcome the defects in the background technology, the embodiment of the invention provides a safety monitoring system for the operation of a limited space under a power grid, which can effectively solve the problems related to the background technology.
The aim of the invention can be achieved by the following technical scheme: a system for monitoring the safety of operation of a limited space under a power grid, comprising: underground cable passageway monitoring layer divides module: the monitoring layer is used for dividing the monitoring layer of the underground cable channel, so that a physical architecture layer, a power equipment layer and a space environment layer are obtained; the underground cable channel characteristic information statistics module: the method comprises the steps of equally dividing underground cable channels to obtain subareas of the underground cable channels, and counting characteristic information of the subareas of the underground cable channels; the underground cable channel monitoring and analyzing module: the system is used for monitoring and analyzing all the sub-areas of the underground cable channel and comprises a physical architecture layer monitoring and analyzing unit, a power equipment layer monitoring and analyzing unit and a space environment layer monitoring and analyzing unit, so that the operation feasibility metric values of corresponding personnel of the physical architecture layer, the power equipment layer and the space environment layer of all the sub-areas of the underground cable channel are evaluated in sequence; and the data processing cloud center: the system is used for comprehensively analyzing the personnel operation feasibility measurement values of all the underground cable channel subareas, and further screening all the risk underground cable channel subareas to carry out personnel operation safety prompt; monitoring and early warning module for physical sign of maintenance personnel: the system is used for monitoring the physical sign information of each maintainer of the underground cable channel, judging the physical sign stability index of each maintainer of the underground cable channel, and extracting the abnormal physical sign fluctuation maintainer for early warning prompt; mySQL end: the system is used for storing physical characteristic information of each job number maintainer of the underground cable passage.
As a preferred technical scheme of the invention, the characteristic information of each underground cable channel subarea comprises an initial operation 3D model, a space volume and an underground depth of a space center point.
As a preferred technical solution of the present invention, the physical architecture layer monitoring and analyzing unit is configured to monitor and analyze a physical architecture layer of each sub-area of an underground cable channel, and specifically includes: panoramic monitoring scanning is carried out on all the underground cable channel subareas, so that panoramic models of all the underground cable channel subareas are built, the central line of the upper end face of the panoramic model of each underground cable channel subarea is extracted, limiting monitoring points are distributed according to the set number, and therefore the vertical interval between each limiting monitoring point of each underground cable channel subarea and the lower end face is extractedJ is the number of each underground cable channel subarea, < ->I is the number of each limited monitoring point, < ->。
According to the central line of the upper end surface to which the panoramic model of each underground cable channel subarea belongs, locating the central point of the central line of the upper end surface, constructing the reference angle of the reference structure to which the upper end surface of each underground cable channel subarea belongs, and extracting the angle。
Similarly, according to the initial commissioning 3D model of each underground cable channel subarea, extracting the initial vertical interval of each limiting monitoring point of each underground cable channel subarea from the lower end faceReference angle of initial reference structure to which upper end face belongs +.>According to the expression: />Preliminarily calculating structural stability index +.>Wherein->And->Compensating vertical interval of the limiting monitoring point and structural stability influencing factor deviating from unit interval of the initial vertical interval are preset respectively>For a set structural stability correction value, k is the number of monitoring points.
As a preferable technical scheme of the invention, the physical architecture layer of each underground cable channel subarea corresponds to a personnel operation feasibility measure valueThe specific calculation expression is:wherein->And->Respectively a preset reference angle of the reference structure belonging to the permissible deviation angle and a personnel operation influence factor corresponding to the unit deviation angle, wherein e is a natural constant,and (5) measuring correction factors for the operation feasibility of the corresponding personnel of the set physical architecture layer.
As a preferred technical solution of the present invention, the power equipment layer monitoring and analyzing unit is configured to monitor and analyze a power equipment layer of each sub-area of the underground cable channel, and specifically includes: based on the panoramic model of each sub-area of the underground cable passageway,identifying and positioning the electric power cables to the positions thereof, and arranging measuring points in a preset number, thereby sensing and extracting the body surface temperature of each measuring point of each electric power cable of each underground cable channel subareaM is the serial number of each power cable, +.>P is the number of each measuring point, +.>Simultaneously sensing the space temperature of each underground cable channel subarea>。
Abnormal operation factors corresponding to corresponding unit deviation temperatures between body surface temperatures and space temperatures of the power cableFurther, the operation safety influence factors of all the electric power cables of all the underground cable channel subareas are primarily calculated>Where w is the number of measurement points.
As a preferable technical scheme of the invention, the power equipment layer of each underground cable channel subarea corresponds to the personnel operation feasibility measure valueThe specific numerical calculation formula is as follows:wherein u is the number of power cables, +.>For setting the body surface allowable deviation temperature of the measuring point to which the power cable belongs, < >>And (3) correcting factors for the influence of the operation of personnel corresponding to the body surface temperature of the set measurement point of the electric cable.
As a preferable technical scheme of the invention, the space environment layer monitoring and analyzing unit monitors and analyzes the space environment layer of each underground cable channel subarea, and specifically comprises the following steps: monitoring gas data of the space environment layer of each underground cable channel subarea, wherein the gas data comprise oxygen concentration and harmful gas concentration of each property, and further counting the oxygen concentration of each underground cable channel subareaAnd harmful gas concentration of each property->G is the number of harmful gases of various nature, < >>。
Based on the volume of space in each sub-zone of the underground cable channelFurthermore, according to the corresponding adaptive oxygen concentration of the unit space volume of the predefined underground cable channel +.>Permissible concentration of harmful gases of various natures +.>The calculation model according to the data is as follows:
processing to obtain the working propulsion feasibility index +.>，/>A propellant-feasible correction factor corresponding to the preset gas data, < >>And->Respectively setting operation influence weight factors corresponding to oxygen and harmful gas, +.>For a given allowable deviation concentration of oxygen, t is the total number of properties of the harmful gas.
Monitoring the pressure and air flow of the space environment layer of each underground cable channel subarea, thereby counting the pressure of each underground cable channel subareaAir flow->。
Extracting the underground depth of the space center point of each underground cable channel subarea, and further matching with the pre-defined reference conventional pressure of the cable channel corresponding to each underground depth interval to obtain the reference conventional pressure of each underground cable channel subarea。
Extracting the distance between the associated ventilation openings of each underground cable channel subarea and the corresponding associated ventilation openingsThereby monitoring and extracting the air flow of the associated vent of each sub-area of the underground cable passage>。
Obtaining environmental operation safety influence indexes of all the underground cable channel subareas through numerical calculation。
As a preferable technical scheme of the invention, the space environment layer of each underground cable channel subarea corresponds to the personnel operation feasibility measure valueThe specific calculation expression of (2) is as follows: />Wherein->And->And compensating the correction factors for the operation feasibility measurement to which the operation feasibility indexes corresponding to the set gas data and the environment operation safety influence indexes belong.
As a preferable technical scheme of the invention, the calculation process of the environment operation safety influence index of each underground cable channel subarea is as follows: according to the air flow breaking quantity corresponding to the unit distance of the predefined ventilation openingFurther, the environmental operation safety influence index of each underground cable channel subarea is obtained through numerical calculation>，Wherein->Andpermissible deviation pressure and permissible deviation air flow, respectively, for the preset environmental operation safety>Compensating air flow for the preset environmental operation safety>And->And the environmental operation safety influence weight values correspond to the set pressure and air flow respectively.
As a preferred technical scheme of the invention, the method for judging the physical sign stability index of each maintainer of the underground cable passage comprises the following specific analysis process: acquiring the work numbers and work starting time points of all the overhaulers of the underground cable channel, setting time intervals to divide all the work monitoring time points, and further monitoring and counting the sign information of all the overhaulers of the underground cable channel at all the work monitoring time points, wherein the sign information comprises the blood oxygen saturation degreeHeart rate->Respiratory rateAnd blood pressure->D is the number of each maintainer, +.>R is the number of each working monitoring time point,。
extracting physical characteristic information of each maintainer of the underground cable channel from the MySQL end, wherein the physical characteristic information comprises height, weight and age, and analyzing and obtaining the physical quality index of each maintainer of the underground cable channelAnd comparing the blood oxygen saturation, heart rate, respiratory rate and blood pressure corresponding to the reference health state of the personnel in each set age range under each body quality index section, thereby screening the blood oxygen saturation corresponding to the reference health state of each maintainer of the underground cable channel>Heart rate->Respiratory rate->And blood pressure->By the expression:
calculating to obtain the physical sign stability index of each maintainer of the underground cable channel>Wherein->、/>、/>And->Respectively predefined blood oxygen saturation, heart rate, respiratory rate and blood pressure.
Compared with the prior art, the embodiment of the invention has at least the following beneficial effects: 1. according to the invention, by arranging the physical architecture layer monitoring and analyzing unit, targeted data monitoring and analysis can be carried out on the physical architecture layer of the sub-region of the underground cable channel, and the operation feasibility metric value of the corresponding personnel of the physical architecture layer of each sub-region of the underground cable channel is evaluated, so that potential safety hazards existing in the underground cable channel can be timely and effectively found, the operation safety risk of the cable channel is further effectively reduced through data detection and analysis, timely data support and guidance can be provided for the overhaul of the cable channel, and reliable safety support guarantee can be provided for the operation of subsequent overhaul personnel.
2. According to the invention, the power equipment layer monitoring and analyzing unit is arranged, so that the high-efficiency safety monitoring is realized for the power transmission cable, the analysis attention of main power equipment put into operation in a cable channel is greatly improved, and the running state stability of the power transmission cable is considered to be an important factor influencing the power transmission stability, so that the accurate safety data monitoring and analyzing is performed for the power cable, thereby not only being beneficial to timely finding out faults of the power cable, but also being beneficial to reducing the transmission loss of power, and simultaneously greatly reducing the occurrence rate of operation accident risks caused by incapability of timely finding and solving the potential safety hazards of the power cable.
3. According to the invention, through monitoring the gas data, the pressure and the gas flow of the underground cable channel and a series of related environmental parameters, the operation feasibility measurement value of the corresponding personnel of the space environmental layer of each underground cable channel subarea is further evaluated, so that the timeliness of safety monitoring on the environment of the underground cable channel is improved, the occurrence of operation safety accidents in the limited underground space can be effectively prevented, and the operation, maintenance and overhaul working efficiency of the underground cable channel is improved.
4. According to the invention, the maintenance personnel physical sign monitoring and early warning module is designed, and the reference comparison physical sign data of all maintenance personnel of the underground cable channel is obtained through screening according to the physical characteristics of each maintenance personnel, so that the accuracy of monitoring and analyzing the physical sign data of the maintenance personnel is greatly improved, the physical sign condition of all maintenance personnel of the underground cable channel can be monitored in real time, corresponding personnel physical sign fluctuation early warning prompt can be carried out according to the physical sign data, and further measures can be taken at the first time to manage, control and rescue the physical sign fluctuation personnel, so that a solid and reliable supporting basis is provided for the operation safety of the maintenance personnel of the underground cable channel.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a schematic diagram of a system architecture connection according to the present invention.
Fig. 2 is a schematic structural diagram of an underground cable channel monitoring and analyzing module according to the present invention.
Fig. 3 is a schematic view of reference angles of the reference structure according to the present invention.
Reference numerals: 1. the middle point of the center line of the upper end surface, 2, the reference angle of the reference structure of the upper end surface, 3, the upper end surface, 4, the lower end surface, 5 and the dividing reference point.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a system for monitoring the safety of operation of a limited space under a power grid, comprising: the system comprises an underground cable channel monitoring layer dividing module, an underground cable channel characteristic information statistics module, an underground cable channel monitoring analysis module, a data processing cloud center, an maintainer physical sign monitoring and early warning module and a MySQL terminal.
The system comprises an underground cable channel monitoring layer dividing module, an underground cable channel characteristic information statistics module, an underground cable channel monitoring analysis module, a data processing cloud center, a MySQL end and an maintainer physical sign monitoring and early warning module, wherein the underground cable channel monitoring layer dividing module and the underground cable channel characteristic information statistics module are connected with the underground cable channel monitoring and analysis module, the underground cable channel monitoring and analysis module is connected with the data processing cloud center, the data processing cloud center is connected with the maintainer physical sign monitoring and early warning module, and the MySQL end is connected with the maintainer physical sign monitoring and early warning module.
The underground cable channel monitoring layer dividing module is used for dividing the monitoring layer of the underground cable channel, so that a physical architecture layer, an electric power equipment layer and a space environment layer are obtained.
The underground cable channel characteristic information statistics module comprises: the method is used for equally dividing the underground cable channels to obtain the subareas of each underground cable channel, so that characteristic information of the subareas of each underground cable channel is counted.
Specifically, the characteristic information of each underground cable channel subarea comprises an initial commissioning 3D model, a space volume and an underground depth of a space center point.
The underground cable channel monitoring and analyzing module is used for monitoring and analyzing each underground cable channel subarea.
Referring to fig. 2, the underground cable channel monitoring and analyzing module includes a physical architecture layer monitoring and analyzing unit, a power equipment layer monitoring and analyzing unit, and a space environment layer monitoring and analyzing unit, so as to sequentially evaluate the operation feasibility metric values of the corresponding personnel of the physical architecture layer, the power equipment layer and the space environment layer of each underground cable channel sub-region.
Specifically, the physical architecture layer monitoring and analyzing unit is configured to monitor and analyze a physical architecture layer of each sub-area of the underground cable channel, and specifically includes: panoramic monitoring scanning is carried out on all the underground cable channel subareas, so that panoramic models of all the underground cable channel subareas are built, the central line of the upper end face of the panoramic model of each underground cable channel subarea is extracted, limiting monitoring points are distributed according to the set number, and therefore the vertical interval between each limiting monitoring point of each underground cable channel subarea and the lower end face is extractedJ is the number of each underground cable channel subarea, < ->I is the number of each limited monitoring point, < ->。
It should be explained that, the above-mentioned panoramic monitoring scanning is performed on each underground cable channel subarea, and the used equipment is a high-definition three-dimensional panoramic scanner.
In a specific embodiment, the physical architecture layer monitoring and analyzing unit is arranged, so that targeted data monitoring and analysis can be carried out on the physical architecture layer of the sub-region of the underground cable channel, and the operation feasibility metric value of the corresponding personnel of the physical architecture layer of each sub-region of the underground cable channel is evaluated, so that potential safety hazards existing in the underground cable channel can be timely and effectively found, the operation safety risk of the cable channel is further effectively reduced through data detection and analysis, timely data support and guidance can be provided for overhaul of the cable channel, and reliable safety support guarantee can be provided for operation of subsequent overhaul personnel.
According to the central line of the upper end surface to which the panoramic model of each underground cable channel subarea belongs, locating the central point of the central line of the upper end surface, constructing the reference angle of the reference structure to which the upper end surface of each underground cable channel subarea belongs, and extracting the angle。
With reference to fig. 3, it needs to be further described that the above-mentioned construction of the reference angle of the reference structure to which the upper end face of each sub-area of the underground cable channel belongs specifically includes: according to the middle point of the center line of the upper end surface of the panoramic model of each underground cable channel subarea, the middle point of the center line of the upper end surface of the panoramic model of each underground cable channel subarea is positioned to each division reference point at equal distance along the two sides of the center line by a set division length, and then the middle point of the center line of the upper end surface of the panoramic model of each underground cable channel subarea is connected with each corresponding division reference point in a straight line, so as to obtain the connecting straight line between the middle point of the center line of the upper end surface of the panoramic model of each underground cable channel subarea and each corresponding division reference point, and the included angle between the connecting straight lines is recorded as the reference angle of the reference structure of the upper end surface of each underground cable channel subarea, which can be particularly referred to as shown in fig. 3.
It should be understood that the trend of the central line of the upper end surface to which the panoramic model of each underground cable channel sub-region belongs is synchronous with the extending direction of the corresponding underground cable channel sub-region, that is, the length of the central line of the upper end surface to which the panoramic model of each underground cable channel sub-region belongs is equal to the extending length of the corresponding underground cable channel sub-region.
Similarly, according to the initial commissioning 3D model of each underground cable channel subarea, extracting the initial vertical interval of each limiting monitoring point of each underground cable channel subarea from the lower end faceReference angle of initial reference structure to which upper end face belongs +.>。
According to the expressionPreliminary calculation of the structural stability index +.>Wherein->And->Compensating vertical interval of the limiting monitoring point and structural stability influencing factor deviating from unit interval of the initial vertical interval are preset respectively>For a set structural stability correction value, k is the number of monitoring points.
Further, the physical architecture layer of each sub-area of the underground cable channel corresponds to the personnel operation feasibility measure valueThe specific calculation expression is: />Wherein->And->The permissible deviation angle of the reference angle of the preset reference structure and the personnel operation influence factor corresponding to the unit deviation angle are respectively shown, e is a natural constant, and +.>And (5) measuring correction factors for the operation feasibility of the corresponding personnel of the set physical architecture layer.
Specifically, the power equipment layer monitoring and analyzing unit is used for monitoring and analyzing the power equipment layer of each underground cable channel subarea, and specifically comprises the following steps: based on the panoramic model of each underground cable channel subarea, the positions of each electric cable are identified and positioned from the panoramic model, and the measuring points are distributed according to the preset number, so that the body surface temperature of each measuring point of each electric cable of each underground cable channel subarea is sensed and extractedM is the serial number of each power cable, +.>P is the number of each measuring point, +.>Simultaneously sensing the space temperature of each underground cable channel subarea>。
It should be explained that the above-mentioned sensing and extracting of the body surface temperature of each measuring point to which each electric cable of each underground cable channel sub-region belongs specifically uses an infrared temperature sensor.
In a specific embodiment, the power equipment layer monitoring and analyzing unit is arranged, so that efficient safety monitoring is performed on the power transmission cable, the analysis attention of main power equipment put into operation in a cable channel is greatly improved, the running state stability of the power transmission cable is considered to be an important factor affecting the power transmission stability, and therefore, the power cable is accurately monitored and analyzed for safety data, the fault of the power cable is timely found, the power transmission loss is reduced, and meanwhile, the occurrence rate of operation accident risks caused by incapability of timely finding and solving the potential safety hazard of the power cable is greatly reduced.
Abnormal operation factors corresponding to corresponding unit deviation temperatures between body surface temperatures and space temperatures of the power cableFurther, the operation safety influence factors of all the electric power cables of all the underground cable channel subareas are primarily calculated>Where w is the number of measurement points.
Further, the power equipment layer of each underground cable channel subarea corresponds to the personnel operation feasibility measure valueThe specific numerical calculation formula is as follows: />Wherein u is the number of power cables, +.>For setting the body surface allowable deviation temperature of the measuring point to which the power cable belongs, < >>And (3) correcting factors for the influence of the operation of personnel corresponding to the body surface temperature of the set measurement point of the electric cable.
Specifically, the space environment layer monitoring and analyzing unit monitors and analyzes the space environment layer of each underground cable channel subarea, and specifically includes: to all the underground electricityThe space environment layer of the cable channel subarea is used for monitoring gas data, wherein the gas data comprise oxygen concentration and harmful gas concentration of each property, and further the oxygen concentration of each underground cable channel subarea is countedAnd harmful gas concentration of each property->G is the number of harmful gases of various nature, < >>。
It should be explained that, the above-mentioned monitoring of gas data is performed on the space environmental layer of each underground cable channel subarea, and the specifically used devices are an oxygen concentration sensor and a gas sensor, where the oxygen concentration sensor is used for identifying the oxygen concentration of the underground cable channel subarea, and the gas sensor is used for identifying the harmful gas property and the harmful gas concentration of each property of the underground cable channel subarea.
As an example, the above-mentioned harmful gases of various properties include, but are not limited to, carbon oxysulfide, chlorine gas, carbon disulfide, carbon monoxide, chlorine dioxide, and the like.
Based on the volume of space in each sub-zone of the underground cable channelFurthermore, according to the corresponding adaptive oxygen concentration of the unit space volume of the predefined underground cable channel +.>Permissible concentration of harmful gases of various natures +.>。
According to the data calculation model:
processing to obtain each underground cable passageWorking advancement feasibility index +.>，/>A propellant-feasible correction factor corresponding to the preset gas data, < >>And->Respectively setting operation influence weight factors corresponding to oxygen and harmful gas, +.>For a given allowable deviation concentration of oxygen, t is the total number of properties of the harmful gas.
Monitoring the pressure and air flow of the space environment layer of each underground cable channel subarea, thereby counting the pressure of each underground cable channel subareaAir flow->。
It should be explained that the above-mentioned pressure and air flow monitoring is performed on the space environment layer of each underground cable channel subarea, and the specifically used devices are a pressure sensor and a flowmeter in sequence.
Extracting the underground depth of the space center point of each underground cable channel subarea, and further matching with the pre-defined reference conventional pressure of the cable channel corresponding to each underground depth interval to obtain the reference conventional pressure of each underground cable channel subarea。
Extracting associated vents of each underground cable channel subarea and between each underground cable channel subarea and a corresponding associated ventSpacing ofThereby monitoring and extracting the air flow of the associated vent of each sub-area of the underground cable passage>。
It should be noted that, the above-mentioned associated ventilation openings of each underground cable channel subregion specifically draw the process: and extracting the positions of the ventilation openings of the underground cable channels according to the positions of the spatial center points of the subareas of the underground cable channels, and further screening the ventilation openings with the shortest interval between the ventilation openings and the spatial center points of the subareas of the underground cable channels, and recording the ventilation openings as associated ventilation openings of the subareas of the underground cable channels.
In a specific embodiment, the invention evaluates the operation feasibility measurement value of the corresponding personnel of the space environment layer of each underground cable channel subarea by monitoring the gas data, the pressure and the gas flow of the underground cable channel, thereby not only improving the timeliness of safety monitoring on the environment of the underground cable channel, but also effectively preventing the occurrence of operation safety accidents in the underground limited space and being beneficial to improving the operation, maintenance and overhaul working efficiency of the underground cable channel.
Obtaining environmental operation safety influence indexes of all the underground cable channel subareas through numerical calculation。
Further, the space environment layer of each underground cable channel subarea corresponds to the personnel operation feasibility measure valueThe specific calculation expression of (2) is as follows: />Wherein->And->And compensating the correction factors for the operation feasibility measurement to which the operation feasibility indexes corresponding to the set gas data and the environment operation safety influence indexes belong.
Further, the calculating process of the environment operation safety influence index of each underground cable channel subarea is as follows: according to the air flow breaking quantity corresponding to the unit distance of the predefined ventilation openingFurther, the environmental operation safety influence index of each underground cable channel subarea is obtained through numerical calculation>，Wherein->And->Permissible deviation pressure and permissible deviation air flow, respectively, for the preset environmental operation safety>Compensating air flow for the preset environmental operation safety>And->And the environmental operation safety influence weight values correspond to the set pressure and air flow respectively.
The data processing cloud center is used for comprehensively analyzing the personnel operation feasibility measurement values of all the underground cable channel subareas, and further screening all the risk underground cable channel subareas to carry out personnel operation safety prompt.
It is further added that each of the above-mentioned undergroundThe personnel operation feasibility measurement value of the cable channel subarea comprises the following specific numerical calculation expression:wherein->A personnel operation feasibility measure value for the j-th underground cable channel subarea,/for the j-th underground cable channel subarea>、/>And->And the weight proportionality coefficients are respectively the predefined physical architecture layer, the power equipment layer and the space environment layer and correspond to the personnel operation feasibility measure.
The method has the advantages that the screening of the sub-areas of each risk underground cable channel carries out personnel operation safety prompt, and the specific process is as follows: and comparing the personnel operation feasibility measurement value of each underground cable channel subarea with a set personnel operation feasibility measurement threshold value, and if the personnel operation feasibility measurement value of a certain underground cable channel subarea is lower than the personnel operation feasibility measurement threshold value, recording the underground cable channel subarea as a risk underground cable channel subarea, thereby counting each risk underground cable channel subarea and carrying out personnel operation safety prompt.
The maintenance personnel sign monitoring and early warning module is used for monitoring sign information of all maintenance personnel of the underground cable channel, judging sign stability indexes of all maintenance personnel of the underground cable channel, and extracting sign abnormal fluctuation maintenance personnel to carry out early warning prompt.
The method needs to be described, and the method comprises the following specific processes that: comparing the sign stability index of each maintainer of the underground cable channel with a predefined sign stability index threshold value, and if the sign stability index of a certain maintainer of the underground cable channel is lower than the sign stability index threshold value, marking the maintainer as a sign abnormal fluctuation maintainer and carrying out early warning prompt.
In a specific embodiment, the invention designs the maintenance personnel sign monitoring and early warning module, and screens the reference comparison sign data of all maintenance personnel of the underground cable channel according to the physical characteristics of each maintenance personnel, so that the accuracy of monitoring and analyzing the sign data of the maintenance personnel is greatly improved, the sign condition of all maintenance personnel of the underground cable channel can be monitored in real time, corresponding personnel sign fluctuation early warning prompt can be carried out according to the detection result, and further, the management and control rescue of the sign fluctuation personnel can be facilitated to take measures at the first time, and a solid and reliable supporting basis is provided for the operation safety of the maintenance personnel of the underground cable channel.
Specifically, the determining the physical sign stability index of each maintainer of the underground cable channel comprises the following specific analysis processes: acquiring the work numbers and work starting time points of all the overhaulers of the underground cable channel, setting time intervals to divide all the work monitoring time points, and further monitoring and counting the sign information of all the overhaulers of the underground cable channel at all the work monitoring time points, wherein the sign information comprises the blood oxygen saturation degreeHeart rate->Respiratory rate->And blood pressure->D is the number of each maintainer, +.>R is the number of each job monitoring time point, < ->。
The monitoring device is used for monitoring and counting the physical sign information of each maintainer of the underground cable channel at each working monitoring time point, and the specifically used monitoring device is wearable mobile sensing equipment.
Extracting physical characteristic information of each maintainer of the underground cable channel from the MySQL end, wherein the physical characteristic information comprises height, weight and age, and analyzing and obtaining the physical quality index of each maintainer of the underground cable channelAnd comparing the blood oxygen saturation, heart rate, respiratory rate and blood pressure corresponding to the reference health state of the personnel in each set age range under each body quality index section, thereby screening the blood oxygen saturation corresponding to the reference health state of each maintainer of the underground cable channel>Heart rate->Respiratory rate->And blood pressure->。
It should be explained that the body mass index of each maintainer of the underground cable passageThe specific calculation formula is as follows: />Wherein->And->Expressed as weight and height of the d-th service personnel of the underground cable pathway, respectively.
By the expression:
calculating to obtain the physical sign stability index of each maintainer of the underground cable channel>Wherein->、/>、/>And->Respectively predefined blood oxygen saturation, heart rate, respiratory rate and blood pressure.
The MySQL terminal is used for storing physical characteristic information of each job number maintainer of the underground cable channel.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art of describing particular embodiments without departing from the structures of the invention or exceeding the scope of the invention as defined by the claims.
Claims (2)
1. The utility model provides a limited space operation safety monitoring system in electric wire netting underground which characterized in that includes:
underground cable passageway monitoring layer divides module: the method comprises the steps of dividing a monitoring layer of an underground cable channel to obtain a physical architecture layer, a power equipment layer and a space environment layer;
the underground cable channel characteristic information statistics module: the method comprises the steps of equally dividing underground cable channels to obtain subareas of the underground cable channels, and counting characteristic information of the subareas of the underground cable channels;
the underground cable channel monitoring and analyzing module: the system is used for monitoring and analyzing all the sub-areas of the underground cable channel and comprises a physical architecture layer monitoring and analyzing unit, a power equipment layer monitoring and analyzing unit and a space environment layer monitoring and analyzing unit, so that the operation feasibility metric values of corresponding personnel of the physical architecture layer, the power equipment layer and the space environment layer of all the sub-areas of the underground cable channel are evaluated in sequence;
and the data processing cloud center: the system is used for comprehensively analyzing the personnel operation feasibility measurement values of all the underground cable channel subareas, and further screening all the risk underground cable channel subareas to carry out personnel operation safety prompt;
monitoring and early warning module for physical sign of maintenance personnel: the system is used for monitoring the physical sign information of each maintainer of the underground cable channel, judging the physical sign stability index of each maintainer of the underground cable channel, and extracting the abnormal physical sign fluctuation maintainer for early warning prompt;
MySQL end: the system is used for storing physical characteristic information of each job number maintainer of the underground cable passage;
the characteristic information of each underground cable channel subarea comprises an initial commissioning 3D model, a space volume and the underground depth of a space center point;
the physical architecture layer monitoring and analyzing unit is used for monitoring and analyzing the physical architecture layer of each underground cable channel subarea, and specifically comprises the following steps:
panoramic monitoring scanning is carried out on all the underground cable channel subareas, so that panoramic models of all the underground cable channel subareas are built, the central line of the upper end face of the panoramic model of each underground cable channel subarea is extracted, limiting monitoring points are distributed according to the set number, and therefore the vertical interval between each limiting monitoring point of each underground cable channel subarea and the lower end face is extractedJ is the number of each underground cable channel subarea, < ->I is the number of each limited monitoring point,；
constructing reference angles of reference structures of the upper end surfaces of the sub-areas of the underground cable channels according to the central lines of the upper end surfaces of the panoramic models of the sub-areas of the underground cable channels, positioning the central points of the central lines of the upper end surfaces, and extracting the angles；
Extracting initial vertical intervals of the limiting monitoring points of each underground cable channel subarea from the initial operation 3D model of each underground cable channel subareaReference angle of initial reference structure to which upper end face belongs +.>Calculating the structural stability index of each underground cable channel subarea by the following formula>：
；
Wherein,and->Respectively preset limits ofDetermining the compensation vertical interval to which the monitoring point belongs and the structural stability influence factor deviating from the unit interval to which the initial vertical belongs, < ->K is the number of monitoring points for the set structural stability correction value;
the physical architecture layer of each underground cable channel subarea corresponds to the personnel operation feasibility measure valueThe specific calculation expression is:
，
wherein,and->The permissible deviation angle of the reference angle of the preset reference structure and the personnel operation influence factor corresponding to the unit deviation angle are respectively shown, e is a natural constant, and +.>A correction factor is measured for the operation feasibility of the corresponding personnel of the set physical architecture layer;
the power equipment layer monitoring and analyzing unit is used for monitoring and analyzing the power equipment layer of each underground cable channel subarea, and specifically comprises the following steps:
based on the panoramic model of each underground cable channel subarea, identifying and positioning the positions of each electric cable from the panoramic model, and carrying out measurement point layout according to the preset number, sensing and extracting the body surface temperature of each measurement point of each electric cable of each underground cable channel subareaM is the serial number of each power cable, +.>P is the number of each measuring point, +.>Simultaneously sensing the space temperature of each underground cable channel subarea>；
Abnormal operation factors corresponding to corresponding unit deviation temperatures between body surface temperatures and space temperatures of the power cableCalculating the operation safety influence factor of each electric cable of each underground cable channel subarea>：
，
Wherein w is the number of measurement points;
the power equipment layer of each underground cable channel subarea corresponds to the personnel operation feasibility measurement valueThe specific numerical calculation formula is as follows:
，
where u is the number of power cables,for setting the body surface allowable deviation temperature of the measuring point to which the power cable belongs, < >>The method comprises the steps that an influence correction factor corresponding to personnel operation is set for the body surface temperature of a measurement point to which a set power cable belongs;
the space environment layer monitoring and analyzing unit is used for monitoring and analyzing the space environment layer of each underground cable channel subarea, and specifically comprises the following steps:
monitoring gas data of the space environment layer of each underground cable channel subarea, and counting the oxygen concentration of each underground cable channel subareaAnd harmful gas concentration of each property->Wherein g is the number of harmful gases with various properties,the gas data includes oxygen concentration and harmful gas concentration of each property;
based on the volume of space in each sub-zone of the underground cable channelAdaptive oxygen concentration corresponding to unit space volume to which the predefined underground cable channel belongs>Permissible concentration of harmful gases of various natures +.>Obtaining an operation propulsion feasibility index corresponding to the gas data of each underground cable channel subarea through the following calculation model>：
Wherein->A propellant-feasible correction factor corresponding to the preset gas data, < >>And->Respectively setting operation influence weight factors corresponding to oxygen and harmful gas,t is the total number of properties of harmful gases for a set allowable deviation concentration of oxygen;
monitoring pressure and air flow of a space environment layer of each underground cable channel subarea, and counting the pressure of each underground cable channel subareaAir flow->；
Extracting the underground depth of the space center point of each underground cable channel subarea, and further matching with the pre-defined reference conventional pressure of the cable channel corresponding to each underground depth interval to obtain the reference conventional pressure of each underground cable channel subarea；
Extracting the distance between the associated ventilation openings of each underground cable channel subarea and the corresponding associated ventilation openingsThereby monitoring and extracting the air flow of the associated ventilation openings of each underground cable channel subarea；
Obtaining environmental operation safety influence indexes of all the underground cable channel subareas through numerical calculation；
The space environment layer of each underground cable channel subarea corresponds to the personnel operation feasibility measurement valueThe specific calculation expression of (2) is as follows:
，
wherein,and->Respectively compensating correction factors for operation feasibility measurement to which the operation propelling feasibility indexes and the environmental operation safety influence indexes corresponding to the set gas data belong;
the calculation process of the environment operation safety influence index of each underground cable channel subarea comprises the following steps:
according to the air flow breaking quantity corresponding to the unit distance of the predefined ventilation openingFurther, the environmental operation safety influence index of each underground cable channel subarea is obtained through numerical calculation>：
，
Wherein,and->Permissible deviation pressure and permissible deviation air flow, respectively, for the preset environmental operation safety>Compensating air flow for the preset environmental operation safety>And->And the environmental operation safety influence weight values correspond to the set pressure and air flow respectively.
2. The grid subsurface limited space operation safety monitoring system according to claim 1, wherein: the method for judging the physical sign stability index of each maintainer of the underground cable passage comprises the following specific analysis process:
acquiring the work numbers and work starting time points of all the overhaulers of the underground cable channel, setting time intervals to divide all the work monitoring time points, and further monitoring and counting the sign information of all the overhaulers of the underground cable channel at all the work monitoring time points, wherein the sign information comprises the blood oxygen saturation degreeHeart rate->Respiratory rate->And blood pressure->D is the number of each maintainer, +.>R is the number of each job monitoring time point, < ->；
Extracting physical characteristic information of each maintainer of the underground cable channel from the MySQL end, wherein the physical characteristic information comprises height, weight and age, and analyzing and obtaining the physical quality index of each maintainer of the underground cable channelAnd comparing the blood oxygen saturation, heart rate, respiratory rate and blood pressure corresponding to the reference health state of the personnel in each set age range under each body quality index section, thereby screening the blood oxygen saturation corresponding to the reference health state of each maintainer of the underground cable channel>Heart rate->Respiratory rate->And blood pressure->The method comprises the steps of carrying out a first treatment on the surface of the And calculating the sign stability index of each maintainer of the underground cable passage by the following formula>：
，
Wherein the method comprises the steps of，、/>、/>And->Respectively predefined blood oxygen saturation, heart rate, respiratory rate and blood pressure.
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