CN117057617B - Electric power construction site safety monitoring and early warning system based on Internet of things - Google Patents
Electric power construction site safety monitoring and early warning system based on Internet of things Download PDFInfo
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Abstract
The invention belongs to the technical field of safety monitoring and early warning of power construction sites, and particularly discloses a power construction site safety monitoring and early warning system based on the Internet of things. According to the invention, the construction distance safety assessment is carried out by combining the information dimensions of the electric power construction environment information, the electric power grounding structure information, the electric power basic structure information and the like, and when the assessment result is unsafe, the safety construction distance of the electric power constructors is determined, so that the limitation of electric shock risk monitoring and early warning in the current electric power construction site is effectively solved, and the accuracy of electric shock risk analysis of the electric power constructors and the operation safety of the electric power constructors are ensured.
Description
Technical Field
The invention belongs to the technical field of safety monitoring and early warning of power construction sites, and relates to a power construction site safety monitoring and early warning system based on the Internet of things.
Background
In an electrical construction site, a series of safety risks such as electric shock, fire, explosion, high-rise drop, etc. may be faced. The importance of safety monitoring and early warning at the power construction site is self-evident in order to minimize the possibility of accidents.
The electric power construction includes construction scenes such as electrified construction and outage construction, to electrified construction, current electric power job site safety monitoring main circuit's amperage and voltage intensity etc. monitor to carry out electric shock prevention safety precaution, it is obvious that there is certain limitation to electric power job site electric shock risk monitoring precaution at present, specifically realizes in following several aspects: 1. the early warning consideration factors are more single and conventional, potential electric shock risk factors are not further monitored, accurate risk assessment and early warning information cannot be provided, further accuracy of electric shock risk analysis of personnel cannot be guaranteed, operation stability and operation safety of electric power construction personnel cannot be guaranteed, and meanwhile the possibility of early warning missing exists.
2. The analysis of the working state of the personnel is limited, the working distance of the personnel is not considered, when the personnel is near the electrified equipment or the high electric field intensity area, the risk of touching the electrified part or the electric field exists, and then the electric shock hidden danger is generated, the comprehensive working distance assessment is not carried out at present according to the combination of the actual working environment and the electric power state, and then the possibility of triggering electric shock by the electric power constructor cannot be reduced, so that the early warning effect of the electric power constructor cannot be guaranteed, the safety working distance setting is not carried out at the same time, the rationality and the standardization of the working distance limitation of the electric power constructor cannot be guaranteed, and the construction reliability of the electric power constructor cannot be improved.
3. The lack of relevance monitoring and evaluation between different elements requires comprehensive consideration of a plurality of elements, complex relations and interaction possibly exist between different elements, the relations possibly cause increase or decrease of risks, the elements are not deeply analyzed currently, and the early warning judgment result possibly has deviation, so that early warning is not timely enough, and further operation safety guarantee is insufficient.
Disclosure of Invention
In view of this, in order to solve the problems set forth in the above background technology, an electric power construction site safety monitoring and early warning system based on the internet of things is provided.
The aim of the invention can be achieved by the following technical scheme: the invention provides an electric power construction site safety monitoring and early warning system based on the Internet of things, which comprises: and the power construction environment information monitoring module is used for monitoring the construction environment in the target power construction area to obtain the monitoring humidity of each environment monitoring point.
And the power grounding structure information monitoring module is used for monitoring the grounding structure of the circuit to be maintained corresponding to the target power construction area to obtain the grounding structure information of the current circuit to be maintained.
And the electric power basic structure information monitoring module is used for monitoring circuit structure information and insulation structure information of the circuit to be maintained corresponding to the target electric power construction area.
And the power constructor state monitoring module is used for monitoring power constructors through cameras arranged in the target power construction area to obtain monitored power constructor images.
And the electric power construction distance safety assessment module is used for locating the distance between the electric power constructors and the circuit to be maintained from the electric power constructor image, recording the distance as the actual construction distance, and further carrying out construction distance safety assessment to obtain a safety assessment result.
And the power plan construction information extraction module is used for extracting the predicted construction time of the target power construction.
And the construction distance safety early warning correction module is used for carrying out early warning when the safety assessment result is unsafe, determining the safety construction distance of the power constructor and feeding back to the voice prompt terminal worn by the constructor.
Preferably, the grounding structure information comprises a grounding potential difference of each grounding point, a thermosensitive image of the grounding conductor, a grounding resistance and humidity and soil resistivity of each soil monitoring point in the area where the grounding conductor is located.
The circuit structure information is the current and the temperature of each circuit monitoring point in each monitoring time period.
The insulation structure information is an infrared thermosensitive image of the circuit length, the number of circuit breakage parts, the breakage area of each circuit breakage part and the insulation equipment.
Preferably, the construction distance safety assessment includes: extracting the grounding potential difference of each grounding point, the thermosensitive image of the grounding conductor, the grounding resistance and the humidity and soil resistivity of each soil monitoring point of the area where the grounding conductor is located from the grounding structure information of the current circuit to be maintained, and counting the safety degree of the grounding state of the circuit to be maintained。
Extracting the current and the temperature of each circuit monitoring point in each monitoring time period from the circuit structure information of the circuit to be maintained, and counting the body state safety of the circuit to be maintained。
Extracting circuit length, number of circuit breakage parts, breakage area of each circuit breakage part and infrared thermosensitive image of insulating equipment from insulating structure information of circuit to be maintained, and counting insulating state safety of circuit to be maintained。
The grounding state, the circuit body state and the insulating state of the circuit to be maintained are respectively used as the operation safety evaluation items, and then、/>And->Respectively making difference with the set reference value, and counting the number of operation safety evaluation items with the difference value less than 0>。
When (when)When the circuit is in operation, the highest monitoring humidity is screened out from the monitoring humidity of each environmental monitoring point, and then the safety state of the circuit to be maintained is checked for the second time, so that the safety state coincidence degree of the circuit to be maintained is obtained>。
When (when)When the safety is regarded as the safety assessment result of the construction distance, when +.>And when the safety assessment method is used, the unsafe safety is used as a safety assessment result of the construction distance.
When (when)When the circuit to be maintained is in the normal state, the whole safety deviation degree of the circuit to be maintained is counted>And matching the operation distance corresponding to the set safety deviation degree of each integrated circuitComparing to obtain the proper working distance of the circuit to be maintained corresponding to the whole safety deviation degree>。
The actual construction distance of the power constructor is recorded asWhen->When the safety is regarded as the safety assessment result of the construction distance, when +.>And when the safety assessment method is used, the unsafe safety is used as a safety assessment result of the construction distance.
Preferably, the second checking the safety state of the circuit to be maintained includes: will beThe grounding state safety degree, the circuit body state safety degree and the insulation state safety degree which are correspondingly adapted with the set construction distances are respectively matched and compared to obtain the grounding state safety degree which is correspondingly adapted with the actual construction distance of the electric power constructor>The state security of the circuit body>And insulation state safety->。
Respectively matching and comparing the highest monitoring humidity with the grounding state safety degree, the circuit body state safety degree and the insulating state safety degree corresponding to each humidity to obtain the grounding state safety degree corresponding to the highest monitoring humidityThe state security of the circuit body>And insulation state safety->。
Counting the safety state coincidence degree of a circuit to be maintained，，/>The method is characterized in that the method comprises the following steps of setting allowable ground state safety adaptation difference, circuit body state safety adaptation difference and insulation state safety adaptation difference.
Preferably, the statistical formula of the overall safety deviation of the circuit to be maintained is:，/>the ground state safety, the circuit body state safety and the insulation state safety of the set reference are respectively +.>The safety deviation degree is set for the state of the reference circuit.
Preferably, counting the safety of the ground state of the circuit to be maintained includes: locating the number of temperature distribution areas from a thermal image of a ground conductorAnd the temperature value of the respective temperature distribution areas +.>，/>The number of the temperature distribution area is indicated,counting the temperature conformity of the grounding conductor +.>。
The grounding resistance of the grounding conductor is subjected to difference between the grounding resistance of the grounding conductor and the grounding resistance of the conventional grounding conductor, so as to obtain the difference of the grounding resistance, and the grounding performance conformity of the grounding conductor is set according to the difference。
The average value calculation is carried out on the humidity of each soil monitoring point in the area where the grounding conductor is located, the average humidity is obtained, and meanwhile, the maximum humidity is positioned from the humidity of each soil monitoring point, so that the ground conductor is easy to operateAs soil reference humidity->Obtaining the soil reference resistivity according to the same way as the soil reference humidity>。
Screening out the maximum ground potential difference from the ground potential differences of all the ground pointsCounting the grounding environment conformity of the grounding conductor +.>，/>，/>、/>、/>Respectively setting proper soil humidity, soil resistivity and grounding potential difference>The humidity difference is allowed for the set soil.
Counting the safety degree of the grounding state of a circuit to be maintained，/>，/>、/>、/>The temperature compliance, the grounding performance compliance and the grounding environment compliance of the set reference are respectively set.
Preferably, the counting the security degree of the body state of the circuit to be maintained includes: the monitoring time period is taken as an abscissa, the current is taken as an ordinate, a current change curve of each circuit monitoring point is constructed, and the number of fluctuation points is positioned from the current change curveAnd amplitude valueD represents the circuit monitoring point number, +.>Counting the stability of the flowing current of each circuit monitoring point>，，/>To set the allowable current ripple magnitude.
Counting the number of circuit monitoring points with the stability of the flowing current less than 0 as the number of abnormal points of the current。
Comparing the temperature of each circuit monitoring point in each monitoring time period with the set circuit conventional temperature, if the temperature of a certain circuit monitoring point in a certain monitoring time period is greater than the circuit conventional temperature, marking the circuit monitoring point as a temperature abnormal point, and counting the number of the temperature abnormal points。
Extracting the highest temperature and the lowest temperature from the temperature of each circuit monitoring point in each monitoring time period, obtaining the temperature difference of each circuit monitoring point by difference, comparing the temperature difference with the set circuit allowable temperature difference, marking the circuit monitoring point with the temperature variation constant point which is larger than the circuit allowable temperature difference, and counting the number of the temperature variation constant points。
Counting the security of the body state of a circuit to be maintained，H is the number of circuit monitoring points, +.>The number ratio of abnormal points of the set allowable current and the number ratio of abnormal points of the temperature are respectively set.
Preferably, the counting the insulation state safety of the circuit to be maintained includes: the length of the circuit and the number of broken parts of the circuit are respectively recorded asAnd->。
Summing the damage areas of the circuit damage positions to obtain a comprehensive damage area。
The temperature conformity of the insulation equipment is obtained by the same statistics according to the statistical mode of the temperature conformity of the grounding conductor。
Counting the insulation state safety of a circuit to be maintained，/>，The damage density, the damage area and the temperature compliance are respectively set.
Preferably, the determining the safe construction distance of the power constructor includes: recording the predicted construction time of the target power construction asSetting the upper limit value of the working safety distance +.>，，/>For the set reference construction time length->For the proper construction distance increase corresponding to the set unit construction deviation factor,representing the construction deviation factor.
According to the image of the electric power constructor, analyzing to obtain the attitude stability of the electric power constructorAnd matching and comparing the reference construction distance corresponding to each attitude stability to obtain the reference construction distance of the corresponding attitude stability of the power constructor as the lower limit value of the operation safety distance>。
If it isWill->If the safe construction distance of the power constructor is ∈ ->Will beIf the safe construction distance of the power constructor is ∈ ->Will->As a safe construction distance for power constructors.
Preferably, the analyzing obtains the stability of the posture of the power constructor, including: locating the position of the gravity center point from the image of the electric power constructor, taking the position of the gravity center point as a starting point to form a vertical line, locating the head position and the foot position of the constructor at the same time, respectively connecting the head position and the foot position of the constructor with the position of the gravity center point to obtain a head reference line and a foot reference line, and extracting the included angles between the head reference line and the foot reference line and the vertical line respectivelyRespectively marked asAnd->。
Statistics of the stability of the posture of the power constructor，/>，/>And->The bending angles of the upper body and the lower body are respectively set.
Compared with the prior art, the invention has the following beneficial effects: (1) According to the invention, the construction distance safety assessment is carried out by combining a plurality of information dimensions such as the electric power construction environment information, the electric power grounding structure information and the electric power basic structure information, and when the assessment result is unsafe, the safety construction distance of the electric power constructors is determined, so that the limitation of electric shock risk monitoring and early warning in the current electric power construction site is effectively solved, the defect that the current early warning consideration elements are more single and conventional is avoided, the further monitoring of potential electric shock risk is realized, more accurate risk assessment and early warning information is provided for the electric power constructors, the accuracy of electric shock risk analysis of the electric power constructors is ensured, the operation stability and the operation safety of the electric power constructors are improved, and the possibility of missing early warning is avoided.
(2) According to the invention, when the construction distance safety assessment is carried out, the number of operation safety assessment items with the difference value smaller than 0 is counted, secondary safety check is carried out by combining the environment humidity when the number is 0, and the integral safety deviation degree is counted when the number is not 0, so that the depth safety assessment of the construction distance is realized, the correlation analysis of the external environment, the circuit grounding state, the circuit body state and the circuit insulation state is also realized, the defect that the correlation monitoring and assessment on different elements are lacking currently is avoided, the assessment element of electric shock risk is expanded, the assessment depth of the electric shock risk is further enhanced, and the deviation degree of early warning judgment results is reduced, thereby improving the timeliness of electric shock risk early warning and the operation safety guarantee of electric power constructors.
(3) According to the invention, comprehensive operation distance safety assessment is carried out by combining an actual working environment and an electric power state, so that the fine safety monitoring and early warning of the electric power constructors corresponding to the construction sites are realized, the risk of the electric power constructors corresponding to the operation distances is fully considered, the possibility of triggering electric shock by the electric power constructors is reduced, and the early warning effect and the risk avoiding effect of the electric power constructors are further ensured.
(4) According to the invention, the upper limit value of the operation safety distance is set according to the predicted construction time length, the grounding state safety degree, the body state safety degree and the insulation state safety degree of the circuit to be maintained, and the lower limit value of the operation safety distance is set by analyzing the gesture stability of the electric power constructor, so that the safety construction distance of the electric power constructor is determined, the defect that the safety operation distance is not set at present is effectively overcome, the rationality and the standardization of the operation distance limitation of the electric power constructor are ensured, and the construction reliability and the construction smoothness of the constructor are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the connection of the modules of the system of the present invention.
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 invention provides an electric power construction site safety monitoring and early warning system based on the internet of things, which comprises an electric power construction environment information monitoring module, an electric power constructor state monitoring module, an electric power grounding structure information monitoring module, an electric power basic structure information monitoring module, an electric power construction distance safety assessment module, an electric power planning construction information extraction module and a construction distance safety early warning and correcting module.
The power construction distance safety assessment module is connected with the power construction environment information monitoring module, the power constructor state monitoring module, the power grounding structure information monitoring module, the power basic structure information monitoring module and the construction distance safety early warning correction module respectively, and the construction distance safety early warning correction module is connected with the power planning construction information extraction module and the power constructor state monitoring module respectively.
The power construction environment information monitoring module is used for monitoring the construction environment in the target power construction area to obtain the monitoring humidity of each environment monitoring point.
The power grounding structure information monitoring module is used for monitoring the grounding structure of the circuit to be maintained corresponding to the target power construction area to obtain the grounding structure information of the current circuit to be maintained, wherein the grounding structure information comprises the grounding potential difference of each grounding point, the thermosensitive image of the grounding conductor, the grounding resistance and the humidity and the soil resistivity of each soil monitoring point of the area where the grounding conductor is located.
In a specific embodiment, the ground potential difference is obtained by monitoring through a ground potential difference measuring instrument, the thermal image of the ground conductor is obtained by monitoring through an infrared thermal imager, the ground resistance is obtained by monitoring through a ground resistance tester, and the humidity and the soil resistivity of each soil monitoring point in the area where the ground conductor is located are respectively obtained by monitoring through a humidity sensor and a soil resistivity meter.
The electric power basic structure information monitoring module is used for monitoring circuit structure information and insulation structure information of a circuit to be maintained corresponding to a target electric power construction area.
Specifically, the circuit structure information is the current and the temperature of each circuit monitoring point in each monitoring time period, and the insulation structure information is the circuit length, the number of circuit breakage positions, the breakage area of each circuit breakage position and an infrared thermosensitive image of insulation equipment.
In a specific embodiment, the insulating device includes, but is not limited to, an insulator string, an insulating connector and an insulating cable bridge, wherein the insulating device may be one or more kinds, and the invention uses one insulating device as an example for analysis, and the analysis modes of the insulating devices are the same as the analysis modes of the insulating device, so that the analysis is performed by using one insulating device as an example.
In another embodiment, the circuit length, the number of circuit breakage parts and the breakage area of each circuit breakage part are obtained through monitoring by a high-definition camera carried by the unmanned aerial vehicle, and the infrared thermal image of the insulation equipment is obtained through monitoring by an infrared thermal imager carried by the unmanned aerial vehicle.
And the electric power constructor state monitoring module is used for monitoring electric power constructors through cameras arranged in the target electric power construction area to obtain monitored electric power constructor images.
The power construction distance safety assessment module is used for locating the distance between the power constructors and the circuit to be maintained from the power constructor image, recording the distance as the actual construction distance, and further carrying out construction distance safety assessment to obtain a safety assessment result.
Illustratively, performing construction distance safety assessment includes: d1, extracting the grounding potential difference of each grounding point, the thermosensitive image of the grounding conductor, the grounding resistance and the humidity and soil resistivity of each soil monitoring point in the area where the grounding conductor is located from the grounding structure information of the current circuit to be maintained, and counting the safety of the grounding state of the circuit to be maintained。
Understandably, counting the ground state safety of a circuit to be maintained includes: d1-1, locating the number of temperature distribution areas from the thermal image of the ground conductorAnd the temperature value of the respective temperature distribution areas +.>，/>Number of the area showing temperature distribution>Counting the temperature conformity of the grounding conductor +.>，，/>The safe temperature and the proper temperature difference of the grounding body are respectively set, and the grounding body is +.>Respectively, are shown as taking a maximum value and a minimum value among the temperature values of the respective temperature distribution areas.
D1-2, making a difference between the grounding resistance of the grounding conductor and the grounding resistance of the conventional grounding conductor, so as to obtain a grounding resistance difference, thereby setting the grounding performance conformity of the grounding conductor。
Note that, setting the grounding performance compliance of the grounding conductor includes: if the difference of the grounding resistance is larger than 0 and larger than the set allowance and exceeds the difference of the grounding resistance, the grounding performance conformity of the grounding conductor is recorded asIf the difference of the grounding resistance is larger than 0 and smaller than or equal to the set allowance and exceeds the difference of the grounding resistance, the grounding performance conformity of the grounding conductor is marked as +.>If the difference of the grounding resistance is less than or equal to 0, the grounding performance conformity of the grounding conductor is marked as +.>Thereby obtaining the grounding performance coincidence degree of the grounding conductor>，/>The value is +.>Or->Or->，/>>/>>/>。
In one embodiment of the present invention, in one embodiment,the value can be 0.1, < + >>The value is 0.5%>The value can be 0.9.
D1-3, carrying out average calculation on the humidity of each soil monitoring point in the area where the grounding conductor is located to obtain average humidity, and simultaneously positioning the maximum humidity from the humidity of each soil monitoring point to obtain the water-saving type electric power generatorAs soil reference humidityObtaining the soil reference resistivity according to the same way as the soil reference humidity>。
D1-4, selecting the maximum ground potential difference from the ground potential differences of the ground pointsCounting the grounding environment conformity of the grounding conductor +.>，/>，/>、/>、/>Respectively setting proper soil humidity, soil resistivity and grounding potential difference>The humidity difference is allowed for the set soil.
In one embodiment, soil resistivity refers to the degree of resistance of the soil material to current flow, with lower soil resistivity indicating that the soil is a better electrical conductor for better current conduction. This is critical to effectively distribute current, reduce ground resistance and ensure ground system performance. Thus, in a grounding system, the lower the soil resistivity, the better. The lower soil resistivity means that the soil has better conductivity, is favorable for providing lower grounding resistance and better grounding effect, and maintains certain humidity to increase the conductivity of the soil and reduce the contact impedance between the soil and a grounding body.
In another embodiment, the ground potential difference refers to a potential difference between different locations in the ground system. A small ground potential difference indicates a relatively uniform potential distribution throughout the ground system without significant potential deviations. This helps to achieve better ground effect and ground resistance. At the same time, the smaller ground potential difference helps to reduce the risk of electrical shock in the ground system.
D1-5, counting the safety degree of the grounding state of the circuit to be maintained，/>，、/>、/>The temperature compliance, the grounding performance compliance and the grounding environment compliance of the set reference are respectively set.
D2, extracting the current and the temperature of each circuit monitoring point in each monitoring time period from the circuit structure information of the circuit to be maintained, and counting the safety degree of the body state of the circuit to be maintained。
Understandably, counting the security of the body state of the circuit to be maintained includes: d2-1, transverse to the monitoring periodThe coordinates take the current as the ordinate to construct a current change curve of each circuit monitoring point, and the number of fluctuation points is positioned from the current change curveAnd amplitude->D represents the circuit monitoring point number, +.>Counting the stability of the flowing current of each circuit monitoring point，/>，/>To set the allowable current ripple magnitude.
In one embodiment, the point of the fluctuation refers to the point of the left-right curve opposite in direction, i.e., the point of left-side rising right-side falling or left-side falling right-side rising.
D2-2, counting the number of circuit monitoring points with the stability of the flowing current less than 0 as the number of abnormal points of the current。
D2-3, comparing the temperature of each circuit monitoring point in each monitoring time period with the set circuit conventional temperature, if the temperature of a certain circuit monitoring point in a certain monitoring time period is greater than the circuit conventional temperature, marking the circuit monitoring point as a temperature abnormal point, and counting the number of the temperature abnormal points。
D2-4, extracting the highest temperature and the lowest temperature from the temperatures of the circuit monitoring points in the monitoring time periods, obtaining the temperature difference of the circuit monitoring points by difference, comparing the temperature difference with the set circuit allowable temperature difference, and making the temperature difference larger than the circuitCircuit monitoring points allowing temperature difference are marked as temperature variation constant points, and the number of the temperature variation constant points is counted。
D2-5, counting the security degree of the body state of the circuit to be maintained，H is the number of circuit monitoring points, +.>The number ratio of abnormal points of the set allowable current and the number ratio of abnormal points of the temperature are respectively +.>Is indicated at->And->And takes the maximum value.
D3, extracting the circuit length, the number of circuit breakage parts, the breakage area of each circuit breakage part and the infrared thermosensitive image of the insulating equipment from the insulating structure information of the circuit to be maintained, and counting the safety of the insulating state of the circuit to be maintained。
Understandably, counting the insulation state safety of a circuit to be maintained includes: d3-1, respectively recording the length of the circuit and the number of circuit breakage parts asAnd->。
D3-2, summing the damaged areas of the damaged parts of the circuits to obtain a comprehensive damaged area。
D3-3, obtaining the temperature conformity of the insulating equipment by carrying out the same statistics according to the statistical mode of the temperature conformity of the grounding conductor。
D3-4, counting the safety degree of the insulation state of the circuit to be maintained，/>，The damage density, the damage area and the temperature compliance are respectively set.
According to the embodiment of the invention, comprehensive operation distance safety assessment is carried out by combining an actual working environment and an electric power state, so that fine safety monitoring and early warning of the electric power constructors corresponding to the construction site are realized, the risk of the electric power constructors corresponding to the operation distance is fully considered, the possibility of triggering electric shock by the electric power constructors is reduced, and the early warning effect and the risk avoiding effect of the electric power constructors are further ensured.
D4, respectively taking the grounding state, the circuit body state and the insulating state of the circuit to be maintained as each operation safety evaluation item, and further taking the grounding state, the circuit body state and the insulating state of the circuit to be maintained as each operation safety evaluation items、/>And->Respectively making difference with the set reference value, and counting the number of operation safety evaluation items with the difference value less than 0>。
D5, whenWhen the circuit is in operation, the highest monitoring humidity is screened out from the monitoring humidity of each environmental monitoring point, and then the safety state of the circuit to be maintained is checked for the second time, so that the safety state coincidence degree of the circuit to be maintained is obtained>。
Further, performing secondary checking on the safety state of the circuit to be maintained includes: d5-1, willThe grounding state safety degree, the circuit body state safety degree and the insulation state safety degree which are correspondingly adapted with the set construction distances are respectively matched and compared to obtain the grounding state safety degree which is correspondingly adapted with the actual construction distance of the electric power constructor>The state security of the circuit body>And insulation state safety->。
D5-2, respectively matching and comparing the highest monitoring humidity with the grounding state safety degree, the circuit body state safety degree and the insulating state safety degree corresponding to each humidity to obtain the grounding state safety degree corresponding to the highest monitoring humidityThe state security of the circuit body>And insulation state safety->。
D5-3, counting the safety state fitness of the circuit to be maintained，，/>The method is characterized in that the method comprises the following steps of setting allowable ground state safety adaptation difference, circuit body state safety adaptation difference and insulation state safety adaptation difference.
D6, whenWhen the safety is regarded as the safety assessment result of the construction distance, when +.>And when the safety assessment method is used, the unsafe safety is used as a safety assessment result of the construction distance.
D7, whenWhen the circuit to be maintained is in the normal state, the whole safety deviation degree of the circuit to be maintained is counted>Matching and comparing the operation distance with the proper operation distance corresponding to the set safety deviation degree of each integrated circuit to obtain proper operation distance corresponding to the integrated safety deviation degree of the circuit to be maintained>。
Further, the statistical formula of the overall safety deviation of the circuit to be maintained is:，/>the ground state safety, the circuit body state safety and the insulation state safety of the set reference are respectively +.>For a set degree of reference circuit state safety deviation,is indicated at->、/>And->Taking the minimum value.
D8, recording the actual construction distance of the power constructor asWhen->When the safety is regarded as the safety assessment result of the construction distance, when +.>And when the safety assessment method is used, the unsafe safety is used as a safety assessment result of the construction distance. />
According to the embodiment of the invention, when the construction distance safety evaluation is performed, the number of operation safety evaluation items with the difference value smaller than 0 is counted, secondary safety check is performed by combining the environment humidity when the number is 0, and the integral safety deviation degree is counted when the number is not 0, so that the depth safety evaluation of the construction distance is realized, the relevance analysis of the external environment, the circuit grounding state, the circuit body state and the circuit insulation state is realized, the defect that the relevance monitoring and evaluation between different elements are lacking currently is avoided, the evaluation element of electric shock risk is expanded, the evaluation depth of the electric shock risk is further enhanced, and the deviation degree of the early warning judgment result is reduced, and the timeliness of electric shock risk early warning and the operation safety guarantee of electric power constructors are improved.
The power plan construction information extraction module is used for extracting the estimated construction time of the target power construction.
And the construction distance safety early warning correction module is used for carrying out early warning when the safety assessment result is unsafe, determining the safety construction distance of the power constructor and feeding back to the voice prompt terminal worn by the constructor.
Illustratively, determining the safe construction distance of the power constructor includes: g1, the predicted construction time of the target power construction is defined asSetting the upper limit value of the working safety distance +.>，，/>For the set reference construction time length->For the proper construction distance increase corresponding to the set unit construction deviation factor, < ->Representing the construction deviation factor.
G2, analyzing and obtaining the attitude stability of the electric power constructor according to the image of the electric power constructorAnd matching and comparing the reference construction distance corresponding to each attitude stability to obtain the reference construction distance of the corresponding attitude stability of the power constructor as the lower limit value of the operation safety distance>。
Understandably, resolving results in power constructor gesture stability, including: g2-1, slave electric power constructionLocating the position of the gravity center in the personnel image, taking the position of the gravity center as a starting point to be a vertical line, locating the head position and the foot position of the constructor, respectively connecting the head position and the foot position of the constructor with the position of the gravity center to obtain a head reference line and a foot reference line, extracting the included angles between the head reference line and the foot reference line and the vertical line respectively, and marking asAnd->。
G2-2, and calculating the attitude stability of the power constructor，/>，/>And->The bending angles of the upper body and the lower body are respectively set.
According to the embodiment of the invention, the upper limit value of the operation safety distance is set according to the predicted construction time length, the grounding state safety degree, the body state safety degree and the insulation state safety degree of the circuit to be maintained, and the lower limit value of the operation safety distance is set by analyzing the gesture stability of the electric power constructor, so that the safety construction distance of the electric power constructor is determined, the defect that the safety operation distance is not set at present is effectively overcome, the rationality and the standardization of the operation distance limitation of the electric power constructor are ensured, and meanwhile, the construction reliability and the construction smoothness of the constructor are also improved.
G3, ifWill->If the safe construction distance of the power constructor is ∈ ->Will->If the safe construction distance of the power constructor is ∈ ->Will->As a safe construction distance for power constructors.
According to the embodiment of the invention, the construction distance safety assessment is carried out by combining a plurality of information dimensions such as the electric power construction environment information, the electric power grounding structure information and the electric power basic structure information, and when the assessment result is unsafe, the safety construction distance of the electric power constructors is determined, so that the limitation of electric shock risk monitoring and early warning in the current electric power construction site is effectively solved, the defect that the current early warning consideration elements are more single and conventional is avoided, the further monitoring of potential electric shock risk is realized, more accurate risk assessment and early warning information is provided for the electric power constructors, the accuracy of electric shock risk analysis of the electric power constructors is ensured, the operation stability and operation safety of the electric power constructors are improved, and the possibility of missing early warning is avoided.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.
Claims (10)
1. Electric power job site safety monitoring early warning system based on thing networking, its characterized in that: the system comprises:
the power construction environment information monitoring module is used for monitoring the construction environment in the target power construction area to obtain the monitoring humidity of each environment monitoring point;
the power grounding structure information monitoring module is used for monitoring the grounding structure of the circuit to be maintained corresponding to the target power construction area to obtain the grounding structure information of the current circuit to be maintained;
the electric power basic structure information monitoring module is used for monitoring circuit structure information and insulation structure information of a circuit to be maintained corresponding to a target electric power construction area;
the power constructor state monitoring module is used for monitoring power constructors through cameras arranged in the target power construction area to obtain monitored power constructor images;
the power construction distance safety assessment module is used for locating the distance between the power constructors and the circuit to be maintained from the power constructor image, recording the distance as the actual construction distance, and further carrying out construction distance safety assessment to obtain a safety assessment result;
specifically, when the construction distance safety evaluation is performed, the method comprises the following steps:
extracting the grounding potential difference of each grounding point, the thermosensitive image of the grounding conductor, the grounding resistance and the humidity and soil resistivity of each soil monitoring point of the area where the grounding conductor is located from the grounding structure information of the current circuit to be maintained, and counting the safety degree of the grounding state of the circuit to be maintained；
Extracting the current and the temperature of each circuit monitoring point in each monitoring time period from the circuit structure information of the circuit to be maintained, and counting the body state safety of the circuit to be maintained；
Extracting circuit length, number of circuit breakage parts, breakage area of each circuit breakage part and infrared thermosensitive image of insulating equipment from insulating structure information of circuit to be maintained, and counting insulating state safety of circuit to be maintained；
The grounding state, the circuit body state and the insulating state of the circuit to be maintained are respectively used as the operation safety evaluation items, and then、/>And->Respectively making difference with the set reference value, and counting the number of operation safety evaluation items with the difference value less than 0>；
The power plan construction information extraction module is used for extracting the estimated construction time of the target power construction;
and the construction distance safety early warning correction module is used for carrying out early warning when the safety assessment result is unsafe, determining the safety construction distance of the power constructor and feeding back to the voice prompt terminal worn by the constructor.
2. The electric power construction site safety monitoring and early warning system based on the internet of things is characterized in that: the grounding structure information comprises grounding potential differences of all grounding points, thermosensitive images of grounding conductors, grounding resistances and humidity and soil resistivity of all soil monitoring points in the area where the grounding conductors are located;
the circuit structure information is the current and the temperature of each circuit monitoring point in each monitoring time period;
the insulation structure information is an infrared thermosensitive image of the circuit length, the number of circuit breakage parts, the breakage area of each circuit breakage part and the insulation equipment.
3. The electric power construction site safety monitoring and early warning system based on the internet of things is characterized in that: the method for judging the safety assessment result of the electric power construction distance comprises the following steps:
when (when)When the circuit is in operation, the highest monitoring humidity is screened out from the monitoring humidity of each environmental monitoring point, and then the safety state of the circuit to be maintained is checked for the second time, so that the safety state coincidence degree of the circuit to be maintained is obtained>；
When (when)When the safety is regarded as the safety assessment result of the construction distance, when +.>When the construction distance is used, unsafe is used as a safety assessment result of the construction distance;
when (when)When the circuit to be maintained is in the normal state, the whole safety deviation degree of the circuit to be maintained is counted>Matching and comparing the operation distance with the proper operation distance corresponding to the set safety deviation degree of each integrated circuit to obtain proper operation distance corresponding to the integrated safety deviation degree of the circuit to be maintained>；
The actual construction distance of the power constructor is recorded asWhen->When the safety is regarded as the safety assessment result of the construction distance, when +.>And when the safety assessment method is used, the unsafe safety is used as a safety assessment result of the construction distance.
4. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 3, wherein: the secondary checking of the safety state of the circuit to be maintained comprises the following steps:
will beThe grounding state safety degree, the circuit body state safety degree and the insulation state safety degree which are correspondingly adapted with the set construction distances are respectively matched and compared to obtain the grounding state safety degree which is correspondingly adapted with the actual construction distance of the electric power constructor>The state security of the circuit body>And insulation state safety->；
Respectively matching and comparing the highest monitoring humidity with the grounding state safety degree, the circuit body state safety degree and the insulating state safety degree corresponding to each humidity to obtain the grounding state safety degree corresponding to the highest monitoring humidityThe state security of the circuit body>And insulation state safety->；
Counting the safety state coincidence degree of a circuit to be maintained，，/>The method is characterized in that the method comprises the following steps of setting allowable ground state safety adaptation difference, circuit body state safety adaptation difference and insulation state safety adaptation difference.
5. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 3, wherein: the statistical formula of the overall safety deviation degree of the circuit to be maintained is as follows:，/>the ground state safety, the circuit body state safety and the insulation state safety of the set reference are respectively +.>The safety deviation degree is set for the state of the reference circuit.
6. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 3, wherein: counting the safety degree of the grounding state of the circuit to be maintained, comprising:
locating the number of temperature distribution areas from a thermal image of a ground conductorAnd the temperature value of the respective temperature distribution areas +.>，/>Number of the area showing temperature distribution>Counting the temperature conformity of the grounding conductor +.>；
The grounding resistance of the grounding conductor is subjected to difference between the grounding resistance of the grounding conductor and the grounding resistance of the conventional grounding conductor, so as to obtain the difference of the grounding resistance, and the grounding performance conformity of the grounding conductor is set according to the difference；
The average value calculation is carried out on the humidity of each soil monitoring point in the area where the grounding conductor is located, the average humidity is obtained, and meanwhile, the maximum humidity is positioned from the humidity of each soil monitoring point, so that the ground conductor is easy to operateAs soil reference humidity->Obtaining the soil reference resistivity according to the same way as the soil reference humidity>；
Screening out the maximum ground potential difference from the ground potential differences of all the ground pointsCounting the grounding environment conformity of the grounding conductor +.>，/>，/>、/>、/>Respectively setting proper soil humidity, soil resistivity and grounding potential difference>A differential allowable humidity for the set soil;
counting the safety degree of the grounding state of a circuit to be maintained，/>，/>、/>、The temperature compliance, the grounding performance compliance and the grounding environment compliance of the set reference are respectively set.
7. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 3, wherein: the statistics of the body state safety of the circuit to be maintained includes:
the monitoring time period is taken as an abscissa, the current is taken as an ordinate, a current change curve of each circuit monitoring point is constructed, and the current change curve is determined from the current change curveNumber of fluctuation points is locatedAnd amplitude->D represents the circuit monitoring point number, +.>Counting the stability of the flowing current of each circuit monitoring point>，/>，/>Setting allowable current fluctuation amplitude;
counting the number of circuit monitoring points with the stability of the flowing current less than 0 as the number of abnormal points of the current；
Comparing the temperature of each circuit monitoring point in each monitoring time period with the set circuit conventional temperature, if the temperature of a certain circuit monitoring point in a certain monitoring time period is greater than the circuit conventional temperature, marking the circuit monitoring point as a temperature abnormal point, and counting the number of the temperature abnormal points；
Extracting the highest temperature and the lowest temperature from the temperature of each circuit monitoring point in each monitoring time period, obtaining the temperature difference of each circuit monitoring point by difference, comparing the temperature difference with the set circuit allowable temperature difference, marking the circuit monitoring point with the temperature variation constant point which is larger than the circuit allowable temperature difference, and counting the number of the temperature variation constant points；
Counting the security of the body state of a circuit to be maintained，/>H is the number of circuit monitoring points, +.>The number ratio of abnormal points of the set allowable current and the number ratio of abnormal points of the temperature are respectively set.
8. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 6, wherein: the statistics of the insulation state safety of the circuit to be maintained comprises the following steps:
the length of the circuit and the number of broken parts of the circuit are respectively recorded asAnd->；
Summing the damage areas of the circuit damage positions to obtain a comprehensive damage area；
The temperature conformity of the insulation equipment is obtained by the same statistics according to the statistical mode of the temperature conformity of the grounding conductor；
Counting the insulation state safety of a circuit to be maintained，/>，The damage density, the damage area and the temperature compliance are respectively set.
9. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 5, wherein: the determining the safe construction distance of the power constructor comprises the following steps:
recording the predicted construction time of the target power construction asSetting the upper limit value of the working safety distance +.>，，/>For the set reference construction time length->For the proper construction distance increase corresponding to the set unit construction deviation factor,representing a construction deviation factor;
according to the image of the electric power constructor, analyzing to obtain the attitude stability of the electric power constructorAnd matching and comparing the reference construction distance corresponding to each attitude stability to obtain the reference construction distance of the corresponding attitude stability of the power constructor as the lower limit value of the operation safety distance>；
If it isWill->If the safe construction distance of the power constructor is ∈ ->Will beIf the safe construction distance of the power constructor is ∈ ->Will->As a safe construction distance for power constructors.
10. The electric power construction site safety monitoring and early warning system based on the internet of things according to claim 9, wherein: the analysis obtains the attitude stability of the power constructors, and the analysis comprises the following steps:
locating the position of the gravity center from the image of the electric power constructor, taking the position of the gravity center as a starting point to form a vertical line, locating the head position and the foot position of the constructor at the same time, respectively connecting the head position and the foot position of the constructor with the position of the gravity center to obtain a head reference line and a foot reference line, extracting the included angles between the head reference line and the foot reference line and the vertical line respectively, and recording the included angles asAnd->；
Statistics of the stability of the posture of the power constructor，/>，/>And->The bending angles of the upper body and the lower body are respectively set.
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