CN106680632B - Iron tower lightning protection performance detection method and system based on electromagnetic radiation abnormity judgment - Google Patents

Iron tower lightning protection performance detection method and system based on electromagnetic radiation abnormity judgment Download PDF

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CN106680632B
CN106680632B CN201611258970.7A CN201611258970A CN106680632B CN 106680632 B CN106680632 B CN 106680632B CN 201611258970 A CN201611258970 A CN 201611258970A CN 106680632 B CN106680632 B CN 106680632B
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electromagnetic radiation
iron tower
module
lightning protection
protection performance
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CN106680632A (en
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严军荣
卢玉龙
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Hangzhou Houbo Technology Co ltd
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Hangzhou Houbo Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/20Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
    • G01R27/205Measuring contact resistance of connections, e.g. of earth connections
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08Measuring electromagnetic field characteristics
    • G01R29/0807Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0857Dosimetry, i.e. measuring the time integral of radiation intensity; Level warning devices for personal safety use

Abstract

The invention discloses a method and a system for detecting the lightning protection performance of an iron tower based on electromagnetic radiation abnormity judgment. The system comprises a module for identifying the leakage detection position of the iron tower, a module for collecting electromagnetic radiation data, a module for judging whether the electromagnetic radiation value is abnormal or not and a module for calculating the grounding resistance and judging whether the iron tower has a lightning protection performance fault or not. The module for identifying the tower leakage detection position identifies the tower leakage detection position; the electromagnetic radiation data acquisition module is used for acquiring electromagnetic radiation data of the electric leakage detection position; the module for judging whether the electromagnetic radiation value is abnormal directly judges whether the electromagnetic radiation of the iron tower is abnormal according to the electromagnetic radiation value of the electric leakage detection position; the module for calculating the grounding resistance and judging whether the iron tower has the lightning protection performance fault is used for judging whether the iron tower has the lightning protection performance fault according to whether the grounding resistance is normal or not. The method and the system solve the technical problem that the lightning protection performance fault of the communication iron tower is difficult to actively discover.

Description

Iron tower lightning protection performance detection method and system based on electromagnetic radiation abnormity judgment
Technical Field
The invention belongs to the technical field of communication iron tower maintenance, and particularly relates to an iron tower lightning protection performance detection method and system based on electromagnetic radiation abnormity judgment.
Background
At present, the communication iron tower is manually detected and maintained by maintainers. If the large-area electric leakage of the iron tower due to the lightning protection performance fault cannot be found in time, the immeasurable result can be caused. Although the grounding resistance detection technology is mature, a technical scheme for actively finding out the lightning protection performance fault of the iron tower by combining the technology with electromagnetic radiation does not exist, and therefore the iron tower lightning protection performance detection method and system based on electromagnetic radiation abnormity judgment are provided.
Disclosure of Invention
The invention aims to solve the technical problem that the lightning protection performance fault of a communication iron tower is difficult to actively find, and provides a method and a system for detecting the lightning protection performance of the iron tower based on electromagnetic radiation abnormity judgment.
The invention relates to an iron tower system application scene based on the Internet of things, which is shown in figure 1. Sensor equipment is installed at a fixed position of a communication iron tower, the sensor collects relevant parameters of the iron tower and sends the relevant parameters to a system through a communication module, the system stores and processes the sensing data, and a client interacts with the system to obtain required information.
The overall system architecture of the iron tower system based on the internet of things is shown in fig. 2. The system hardware part comprises a communication iron tower and sensing equipment arranged on the tower body, and a communication module of the sensing equipment is communicated with the system in real time; the system software part comprises a system database, a data processing platform and a data management publishing platform, wherein the system database receives sensing data from the sensing equipment and stores all system logs, the data processing platform calls the data in the system database for processing and analysis, and the data management publishing platform receives data processing results of the data processing platform and corresponding records in the system database for management and publishing; the system application platform comprises management equipment and clients, wherein the management equipment comprises but is not limited to facilities such as workstations and computers, and the clients comprise but are not limited to forms of APP, WeChat, Html webpage and the like; the application personnel of the system include, but are not limited to, management personnel and maintenance personnel, and the interfaces of the system are management equipment and a client side respectively.
The implementation of the invention depends on the application scene and the system architecture, electromagnetic radiation sensors are arranged at corresponding positions of the communication iron tower to detect electromagnetic radiation data, current transformers and voltage transformers are arranged in an iron tower grounding loop to detect grounding resistance, and whether lightning protection performance faults exist in the communication iron tower is actively discovered through data analysis.
The system for detecting the lightning protection performance of the iron tower based on the electromagnetic radiation abnormity judgment comprises a module for identifying the leakage detection position of the iron tower, a module for collecting electromagnetic radiation data, a module for judging whether the electromagnetic radiation value is abnormal or not, a module for calculating the ground resistance and judging whether the iron tower has a lightning protection performance fault or not.
1. The module for identifying the electric leakage detection position of the iron tower comprises: and identifying the electric leakage detection position of the iron tower according to the regional characteristics of the iron tower and the structure of the iron tower.
2. Electromagnetic radiation data acquisition module: and an electromagnetic radiation sensor arranged at the position of the electric leakage detection of the iron tower detects the electromagnetic radiation data of the position at regular time and transmits the electromagnetic radiation data to a system database for storage.
3. And the module for judging whether the electromagnetic radiation value is abnormal or not: extracting N pieces of electromagnetic radiation data and recording the data as x1~xNWherein N is set in advancePositive integer, maximum x ═ max { x ═1,x2,…,xNIf x is less than or equal to M, wherein M is a preset maximum allowable value of electromagnetic radiation, the system judges that the electromagnetic radiation is normal at the moment, and returns to the module for judging whether the electromagnetic radiation value is abnormal or not; otherwise, the system judges that the electromagnetic radiation value is abnormal at the moment, and enters a module for calculating the grounding resistance and judging whether the iron tower has the lightning protection performance fault or not.
4. Calculating grounding resistance and judging whether the iron tower has a lightning protection performance fault module: the system activates a voltage transformer in an iron tower grounding loop to generate a detection voltage U and acquire a feedback current I, and calculates a grounding resistance R ═ alpha (U/I), wherein alpha is a preset grounding resistance conversion coefficient; if R is larger than X and R is smaller than or equal to Y, wherein X and Y are respectively a minimum threshold value and a maximum threshold value of a normal range of the grounding resistor which are set in advance, the system judges that no lightning protection performance fault exists in the iron tower at the moment, returns to a module for judging whether the electromagnetic radiation value is abnormal or not, and otherwise judges that the lightning protection performance fault exists in the iron tower at the moment.
Fig. 3 shows a system block diagram of the system for detecting the lightning protection performance of the iron tower based on the electromagnetic radiation anomaly determination.
The invention provides an iron tower lightning protection performance detection method based on electromagnetic radiation abnormity judgment, which is implemented on the basis that a system acquires electromagnetic radiation data through an electromagnetic radiation inductor. The method is realized by the following steps:
step 1, identifying the leakage detection position of the iron tower and setting an initial value.
Identifying the electric leakage detection position of the iron tower according to the regional characteristics of the iron tower and the structure of the iron tower; and setting a maximum allowable value M of electromagnetic radiation, a positive integer N, a ground resistance conversion coefficient alpha, a minimum threshold value X and a maximum threshold value Y of a normal range of the ground resistance.
And 2, extracting electromagnetic radiation data and judging whether the electromagnetic radiation value is abnormal or not.
Extracting N pieces of electromagnetic radiation data, and recording the data as x1~xNTaking the maximum value x as max { x1,x2,…,xNIf x is less than or equal to M, the system judges that the electromagnetic radiation is normal at the moment, and returns to the step 2; if x>M, then the systemWhen the electromagnetic radiation value is judged to be abnormal, the process proceeds to step 3.
And 3, calculating the grounding resistance.
The system activates a voltage transformer in a tower grounding loop to generate a detection voltage U and collects a feedback current I, so that the grounding resistance R is calculated as alpha (U/I).
And 4, judging whether the iron tower has lightning protection performance faults or not.
If R is larger than X and R is less than or equal to Y, judging that the tower does not have lightning protection performance faults at the moment, and returning to the step 2; otherwise, judging that the iron tower has lightning protection performance faults at the moment, and finishing the detection.
Fig. 4 shows a flowchart of a method for detecting the lightning protection performance of the iron tower based on electromagnetic radiation anomaly determination.
The method and the system have the following two advantages:
(1) the invention realizes the detection of the lightning protection performance of the communication iron tower by combining the electromagnetic radiation detection and the grounding resistance detection, and can actively detect the lightning protection performance of the iron tower.
(2) The lightning protection performance of the communication iron tower is automatically detected, and harm caused by manual detection is avoided.
Drawings
FIG. 1 is a schematic diagram of an application scenario of the present invention;
FIG. 2 is an overall system architecture diagram of an application scenario of the present invention;
FIG. 3 is a system block diagram of the present invention;
fig. 4 is a flow chart of a method of the present invention.
Detailed Description
The following describes in detail preferred embodiments of the present invention.
The invention relates to an iron tower system application scene based on the Internet of things, which is shown in figure 1. Sensor equipment is installed at a fixed position of a communication iron tower, the sensor collects relevant parameters of the iron tower and sends the relevant parameters to a system through a communication module, the system stores and processes the sensing data, and a client interacts with the system to obtain required information.
The overall system architecture of the iron tower system based on the internet of things is shown in fig. 2. The system hardware part comprises a communication iron tower and sensing equipment arranged on the tower body, and a communication module of the sensing equipment is communicated with the system in real time; the system software part comprises a system database, a data processing platform and a data management publishing platform, wherein the system database receives sensing data from the sensing equipment and stores all system logs, the data processing platform calls the data in the system database for processing and analysis, and the data management publishing platform receives data processing results of the data processing platform and corresponding records in the system database for management and publishing; the system application platform comprises management equipment and clients, wherein the management equipment comprises but is not limited to facilities such as workstations and computers, and the clients comprise but are not limited to forms of APP, WeChat, Html webpage and the like; the application personnel of the system include, but are not limited to, management personnel and maintenance personnel, and the interfaces of the system are management equipment and a client side respectively.
The implementation of the invention depends on the application scene and the system architecture, electromagnetic radiation sensors are arranged at corresponding positions of the communication iron tower to detect electromagnetic radiation data, a current-voltage transformer is arranged in an iron tower grounding loop to detect grounding resistance, and whether the communication iron tower has lightning protection performance faults or not is discovered through data analysis.
In the embodiment, the transformation of the Internet of things is carried out on a certain iron tower, so that the detection of the lightning protection performance of the iron tower is realized. The embodiment of the method and the system of the invention is as follows:
the system for detecting the lightning protection performance of the iron tower based on the electromagnetic radiation abnormity judgment comprises a module for identifying the leakage detection position of the iron tower, a module for collecting electromagnetic radiation data, a module for judging whether the electromagnetic radiation value is abnormal or not, a module for calculating the ground resistance and judging whether the iron tower has a lightning protection performance fault or not.
1. The module for identifying the electric leakage detection position of the iron tower comprises: and identifying the electric leakage detection position of the iron tower according to the regional characteristics of the iron tower and the structure of the iron tower. In this embodiment, the terrain of the area where the iron tower is located is high, and the iron tower structure belongs to an angle steel tower, so that the tower footing and a circular area with a radius of 5m around the tower footing are selected as the leakage monitoring position of the iron tower.
2. Electromagnetic radiation data acquisition module: and an electromagnetic radiation sensor arranged at the position of the electric leakage detection of the iron tower detects the electromagnetic radiation data of the position at regular time and transmits the electromagnetic radiation data to a system database for storage.
3. And the module for judging whether the electromagnetic radiation value is abnormal or not: the system extracts N pieces of electromagnetic radiation data and records the data as x1~xNWhere N is a positive integer set in advance, and the maximum value x is max { x ═ x1,x2,…,xNIf x is less than or equal to M, wherein M is a preset maximum allowable value of electromagnetic radiation, the system judges that the electromagnetic radiation is normal at the moment, and returns to the module for judging whether the electromagnetic radiation value is abnormal or not; otherwise, the system judges that the electromagnetic radiation value is abnormal at the moment, and enters a module for calculating the grounding resistance and judging whether the iron tower has the lightning protection performance fault or not. In this embodiment, N is set to 5, the maximum value M of electromagnetic radiation is set to 0.5 μ T (tesla), and the system extracts 5 pieces of electromagnetic radiation data x1~x50.1, 0.15, 0.3, 0.7 and 0.4 (the unit is mu T), wherein the maximum value x is max { x { (x)1,x2,…,xN}=0.7>And M is 0.5, the system judges that the electromagnetic radiation value is abnormal at the moment, and enters a module for calculating the grounding resistance and judging whether the iron tower has a lightning protection performance fault or not.
4. Calculating grounding resistance and judging whether the iron tower has a lightning protection performance fault module: the system activates a voltage transformer in an iron tower grounding loop to generate a detection voltage U and acquire a feedback current I, and calculates a grounding resistance R ═ alpha (U/I), wherein alpha is a preset grounding resistance conversion coefficient; if R is larger than X and R is smaller than or equal to Y, wherein X and Y are respectively a minimum threshold value and a maximum threshold value of a normal range of the grounding resistor which are set in advance, the system judges that no lightning protection performance fault exists in the iron tower at the moment, returns to a module for judging whether the electromagnetic radiation value is abnormal or not, and otherwise judges that the lightning protection performance fault exists in the iron tower at the moment. In this embodiment, the ground resistance conversion coefficient α is set to 0.8, the normal range value of the ground resistance is set to 0.5 Ω to 10 Ω (ohm), the voltage transformer generates the detection voltage 10V, and the feedback current is 8A, then 0.5 Ω < R > is 1 Ω <10 Ω, so the system determines that there is no lightning protection performance fault in the iron tower at this time, and returns to the module for determining whether the electromagnetic radiation value is abnormal.
The invention provides an iron tower lightning protection performance detection method based on electromagnetic radiation abnormity judgment, which is implemented on the basis that electromagnetic radiation data are acquired by a system through an electromagnetic radiation inductor. The method is realized by the following steps:
step 1, identifying the leakage detection position of the iron tower and setting an initial value.
Identifying the electric leakage detection position of the iron tower according to the regional characteristics of the iron tower and the structure of the iron tower; and setting a maximum allowable value M of electromagnetic radiation, a positive integer N, a ground resistance conversion coefficient alpha, a minimum threshold value X and a maximum threshold value Y of a normal range of the ground resistance. In the embodiment, the terrain of the area where the iron tower is located is high, and the structure of the iron tower belongs to an angle steel tower, so that a tower footing and a circular area with the radius of 5m around the tower footing are selected as leakage monitoring positions of the iron tower; the maximum value M of the electromagnetic radiation is set to be 0.5 mu T, the positive integer N is set to be 5, the conversion coefficient alpha of the grounding resistance is set to be 0.8, and the normal range limit of the grounding resistance is set to be 0.5 omega-10 omega.
And 2, extracting electromagnetic radiation data and judging whether the electromagnetic radiation value is abnormal or not.
Extracting N pieces of electromagnetic radiation data, and recording the data as x1~xNTaking the maximum value x as max { x1,x2,…,xNIf x is less than or equal to M, the system judges that the electromagnetic radiation is normal at the moment, and returns to the step 2; if x>M, the system judges that the electromagnetic radiation value is abnormal at the moment and enters step 3. In this embodiment, the system extracts the maximum value x ═ max { x } of the 5 pieces of electromagnetic radiation data1,x2,…,xN}=0.7>And M is 0.5, and the system judges that the electromagnetic radiation value is abnormal at the moment.
And 3, calculating the grounding resistance.
The system activates a voltage transformer in a tower grounding loop to generate a detection voltage U and collects a feedback current I, so that the grounding resistance R is calculated as alpha (U/I). In this embodiment, a detection voltage 10V is generated, a feedback current is 8A, and α is 0.8, and R is 1 Ω.
Step 4, judging whether the iron tower has lightning protection performance faults or not
If R is greater than X and R is less than or equal to Y, judging that the iron tower does not have lightning protection performance faults at the moment, and returning to the module 2; otherwise, the iron tower is judged to have lightning protection performance faults. In this embodiment, since 0.5 Ω < R > is 1 Ω <10 Ω, the system determines that there is no lightning protection performance fault in the iron tower at this time, and returns to step 2.
Of course, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention, and not as a limitation to the present invention, and that the changes and modifications of the above embodiments will fall within the protection scope of the present invention as long as they are within the scope of the present invention.

Claims (2)

1. The system for detecting the lightning protection performance of the iron tower based on the electromagnetic radiation abnormity judgment is characterized by comprising a module for identifying the leakage detection position of the iron tower, a module for collecting electromagnetic radiation data, a module for judging whether the electromagnetic radiation value is abnormal or not, and a module for calculating the ground resistance and judging whether the iron tower has a lightning protection performance fault or not;
the module for identifying the electric leakage detection position of the iron tower is characterized in that: identifying the electric leakage detection position of the iron tower according to the characteristics of the area where the iron tower is located and the structure of the iron tower;
the module for collecting electromagnetic radiation data is characterized in that: an electromagnetic radiation sensor arranged at the position of the electric leakage detection of the iron tower detects the electromagnetic radiation data of the position at regular time and transmits the electromagnetic radiation data to a system database for storage;
the module for judging whether the electromagnetic radiation value is abnormal is characterized in that: extracting N pieces of electromagnetic radiation data and recording the data as x1~xNWhere N is a positive integer set in advance, and the maximum value x is max { x ═ x1,x2,…,xNIf x is less than or equal to M, wherein M is a preset maximum allowable value of electromagnetic radiation, the data processing platform judges that the electromagnetic radiation is normal at the moment, and returns to the module for judging whether the electromagnetic radiation value is abnormal or not; otherwise, the data processing platform judges that the electromagnetic radiation value is abnormal at the moment, and enters a module for calculating the grounding resistance and judging whether the iron tower has the lightning protection performance fault or not;
the module for calculating the grounding resistance and judging whether the iron tower has the lightning protection performance fault is characterized in that: the data processing platform activates a voltage transformer in an iron tower grounding loop to generate a detection voltage U and acquire a feedback current I, and calculates a grounding resistance R as alpha (U/I), wherein alpha is a preset grounding resistance conversion coefficient; if R is larger than X and R is smaller than or equal to Y, wherein X and Y are respectively a minimum threshold value and a maximum threshold value of a normal range of the grounding resistor which are set in advance, the data processing platform judges that the iron tower does not have the lightning protection performance fault at the moment, returns to a module for judging whether the electromagnetic radiation value is abnormal or not, and otherwise judges that the iron tower has the lightning protection performance fault at the moment.
2. An iron tower lightning protection performance detection method based on electromagnetic radiation abnormity judgment is characterized by comprising the following steps:
step 1, identifying a leakage detection position of an iron tower and setting an initial value;
identifying the electric leakage detection position of the iron tower according to the characteristics of the area where the iron tower is located and the structure of the iron tower; setting a maximum allowable value M of electromagnetic radiation, a positive integer N, a ground resistance conversion coefficient alpha, a minimum threshold value X and a maximum threshold value Y of a normal range of a ground resistance;
step 2, extracting electromagnetic radiation data and judging whether the electromagnetic radiation value is abnormal or not;
extracting N pieces of electromagnetic radiation data, and recording the data as x1~xNTaking the maximum value x as max { x1,x2,…,xNIf x is less than or equal to M, the data processing platform judges that the electromagnetic radiation is normal at the moment, and returns to the step 2; otherwise, the data processing platform judges that the electromagnetic radiation value is abnormal at the moment, and the step 3 is carried out;
step 3, calculating the grounding resistance;
the data processing platform activates a voltage transformer in an iron tower grounding loop to generate a detection voltage U and acquire a feedback current I, and calculates a grounding resistance R as alpha (U/I);
step 4, judging whether the iron tower has lightning protection performance faults or not;
and if R is greater than X and R is less than or equal to Y, the data processing platform judges that the iron tower does not have the lightning protection performance fault at the moment, the step 2 is returned, and otherwise, the iron tower is judged to have the lightning protection performance fault at the moment.
CN201611258970.7A 2016-12-30 2016-12-30 Iron tower lightning protection performance detection method and system based on electromagnetic radiation abnormity judgment Active CN106680632B (en)

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