CN114002528A - Lightning grounding device on-line remote monitoring management system - Google Patents
Lightning grounding device on-line remote monitoring management system Download PDFInfo
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Abstract
The invention discloses an on-line remote monitoring and management system of a lightning protection grounding device, which comprises: the system comprises a ground network parameter tester module, a user control terminal, a Beidou satellite, a 4G wireless data transmission module, a cloud platform, a server and a monitoring receiving terminal; each parameter tester in the ground network parameter tester module transmits data to a user control terminal through a ZigBee-based wireless sensor network; the user control terminal receives data through the wireless sensor network and sends the data to the monitoring receiving terminal through the short message function of the Beidou satellite; the monitoring receiving terminal transmits the received data to the cloud platform through the 4G wireless data transmission module, and online monitoring of all ground network parameter testers in a user-to-field area is achieved. The invention improves the accuracy and stability of the resistance detection of the grounding system; remote, real-time, complete and convenient on-line monitoring of data of the lightning protection grounding system in remote areas and areas without mobile networks is realized; the flexibility and the safety of the lightning protection grounding system user side are improved.
Description
Technical Field
The invention belongs to the field of lightning protection grounding, and particularly relates to a remote online monitoring system for a grounding system device in a remote non-4G network area and an unattended field.
Background
With the wide application of electronic equipment and the improvement of safety awareness of people, lightning protection devices are increasingly applied to various fields, particularly to units and fields with higher requirements on safety level, and more particularly to links requiring high attention. Therefore, the country has also recently come to break the corresponding standards and to list them as mandatory standards. However, the traditional protection measures are still adopted in the lightning protection industry at present, the product is single, the detection, monitoring, management and maintenance measures are backward, the intelligent degree is low, the running condition and various protection data of the lightning protection device cannot be mastered in real time, and great hidden dangers are brought to lightning protection safety work. Especially for the remote areas with rare people and inconvenient traffic or the areas with poor mobile communication networks, the parameter measurement of the lightning protection grounding system is more difficult, and the traditional system for realizing data monitoring by depending on the wireless sensor network and the mobile communication network cannot be applied at all and must depend on manual transcription.
In order to prevent equipment from being damaged by lightning current or explosive accidents after the equipment is struck by lightning in the industries of petrifaction, electric power, railway systems, high-speed rail traction stations, buildings, industrial and mining enterprises, communication and the like, the equipment is connected with a grounding system buried underground around the equipment through a down lead. The grounding system is a general term for a grounding body which is composed of a plurality of metal grounding poles buried at a certain depth in the ground and a net structure formed by connecting the grounding poles with each other by conductors. The smaller the grounding resistance value of the grounding system is, the faster the lightning current is released into the ground, and the smaller the damage probability to equipment is. The lightning protection grounding resistance of facilities grounding systems such as buildings, oil depots and the like specified by the national standard is less than 10 omega, and the lightning protection grounding, the anti-static grounding, the working grounding of electrical equipment, the protection grounding, the grounding of an information system and the like are preferably shared, and the grounding resistance is not more than 4 omega. The ground system ground resistance is the resistance encountered by current flowing from the ground system into the earth and then through the earth to the remote diffusion. The value of the grounding resistance represents the degree of good contact of the electrical device with "ground" and reflects the size of the grounding grid.
The grounding system has a large scale and a small scale, and a mode of connecting a plurality of grounding electrodes in parallel is often adopted for achieving a grounding resistance value meeting the national standard. The grounding electrodes are made of galvanized angle steel, the grounding electrodes are connected through metal wires, once the grounding system is constructed, the change of the grounding system is out of sight of people, the resistivity of soil changes along with the passage of time, the grounding electrodes are slowly corroded by acid-containing components of the soil or chemical components after microbial decomposition, and the grounding resistance value of the grounding system gradually becomes large. When the resistance value exceeds the safety value, equipment and personal safety cannot be protected, so that the grounding resistance value of the grounding system needs to be monitored in real time. Because the lightning stroke generates high-frequency component pulse current, the common power frequency detector cannot reflect the actual situation that the potential of the ground grid is raised due to the impact of the lightning current on the ground grid, and therefore the on-line remote monitoring and management system for the lightning protection grounding device is urgently needed.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects in the prior art, the invention provides an online remote monitoring and management system of a lightning protection grounding device, so as to improve the accuracy and stability of the resistance detection of a grounding system; the remote, real-time, complete and convenient online monitoring of the data of the lightning protection grounding system is realized; the flexibility and the safety of the lightning protection grounding system user side are improved.
The technical scheme is as follows: the invention provides an on-line remote monitoring and management system for a lightning protection grounding device, which comprises: the system comprises a ground network parameter tester module, a user control terminal, a Beidou satellite, a 4G wireless data transmission module, a cloud platform, a server and a monitoring receiving terminal; the ground network parameter tester module consists of various parameter testers, realizes the measurement of various parameters, and transmits data to the user control terminal through a ZigBee-based wireless sensor network; the user control terminal receives data through a wireless sensor network and sends the data to the receiving terminal through the short message function of the Beidou satellite; the monitoring receiving terminal transmits the received data to the cloud platform through the 4G wireless data transmission module, and realizes remote online monitoring of all ground network parameter testers in a field area by a user; the cloud platform realizes data interaction among the ground network parameter tester module, the monitoring receiving terminal and the server.
Further, the ground grid parameter tester module monitors values of ground resistance, step voltage, step potential, equipotential conduction, loop resistance, soil moisture temperature, soil resistivity, contact voltage, electrical integrity, and high-frequency impedance.
Further, the user control terminal comprises a controller, a data receiving and transmitting module based on a wireless sensor network, a Beidou RNSS positioning module, a Beidou RDSS short message communication module, a 4G wireless data transmission module and a power supply module; the controller is communicated with each parameter tester through a data receiving and transmitting module based on a wireless sensor network to realize the collection of each test data and the issuing of an instruction; and the RNSS communication module is used for receiving the positioning information, and uploading the position information and the collected test data to the cloud platform through the RDSS module-receiving terminal-4G network or directly through the 4G wireless data transmission module.
Furthermore, the monitoring receiving terminal comprises a Beidou RDSS short message communication module, a single chip microcomputer controller, a 4G wireless data transmission module and a power supply module; the single chip microcomputer controller receives user measurement data through the Beidou RDSS short message communication module and uploads the user measurement data to the cloud platform through the 4G wireless data transmission module, or receives instructions through the 4G wireless data transmission module and sends the instructions to the user control terminal through the Beidou RDSS short message communication module.
Furthermore, the monitoring receiving terminal is a PC or a mobile terminal, and is used for accessing the cloud platform to obtain measurement data, issuing an instruction to the ground grid parameter testing module, and setting system parameters.
Further, the user control terminal can directly transmit data to the cloud platform and the server through the 4G wireless data transmission module.
Has the advantages that: compared with the prior art, the invention has the beneficial effects that: 1. the system integrates the monitoring functions of a plurality of grounding parameters such as soil resistivity, step voltage, contact voltage, electrical integrity, grounding resistance, high-frequency impedance and equipotential, reflects the condition of the grounding system in an all-round way, improves the comprehensive monitoring effect, and improves the accuracy and stability of the resistance detection of the grounding system; 2. the invention realizes the remote, real-time, complete and convenient on-line monitoring of the data of the lightning protection grounding system in remote areas and areas without mobile networks, is not limited by regions and has simple and convenient measurement operation; the flexibility and the safety of the lightning protection grounding system user side are improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of each parameter tester;
FIG. 3 is a schematic diagram of a user control terminal;
FIG. 4 is a schematic diagram of a system receiving terminal;
FIG. 5 is a schematic diagram of a high frequency impedance wiring diagram;
FIG. 6 is a quadrupole equidistance method soil resistivity test chart;
FIG. 7 is a quadrupole non-isometric soil resistivity test chart.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention provides an online remote monitoring and management system of a lightning protection grounding device, which comprises a ground network parameter tester module, a user control terminal, a Beidou satellite, a 4G wireless data transmission module, a cloud platform, a server and a monitoring receiving terminal, as shown in figure 1. The ground network parameter tester module consists of various parameter testers, realizes the measurement of various parameters, and transmits data to the user control terminal through a ZigBee-based wireless sensor network; the user control terminal receives data through a wireless sensor network and sends the data to the receiving terminal through the short message function of the Beidou satellite; the monitoring receiving terminal transmits the received data to the cloud platform through the 4G wireless data transmission module, and realizes remote online monitoring of all ground network parameter testers in a field area by a user; the cloud platform realizes data interaction among the ground network parameter tester module, the monitoring receiving terminal and the server
The ground network parameter tester module is composed of various parameter testers, measurement of various parameters is achieved, and the parameter testers transmit data to the user control terminal through the ZigBee-based wireless sensor network. Because each power station has a large field area and high field wiring cost, various ground grid parameter testers generally comprise a controller (a CC2530 integrated with a ZigBee protocol, a routing node), a data transceiver module based on a wireless sensor network, a test signal generation and output module, a measurement signal processing module, an AD conversion module and a power supply module, as shown in FIG. 2. The controller module receives the instruction through the data transceiver module, controls the test signal generation and output module to output the test signal, starts measurement, and sends the measured data to the user control terminal (coordinator node) through the data transceiver module.
The user control terminal receives data through a wireless sensor network and sends the data to the receiving terminal through a short message function (no mobile network occasion) of the Beidou satellite system; the receiving terminal transmits the received data to the cloud platform server through the 4G wireless data transmission module; the user control terminal directly transmits data to the cloud platform server or through the 4G wireless data transmission module. The user control terminal is composed of a controller (CC 2530 integrated with ZigBee protocol, coordinator node), a data transceiver module based on a wireless sensor network, a beidou RNSS positioning module, a beidou RDSS short message communication module, a 4G wireless data transmission module and a power supply module, as shown in fig. 3. The controller module is communicated with each parameter tester through a data receiving and transmitting module based on a wireless sensor network to realize the collection of each test data and the issuing of instructions; the positioning information is received through the RNSS communication module, and the position information and the collected test data are uploaded to the cloud platform (the area has no 4G network) through the RDSS module-receiving terminal-4G network or directly uploaded to the cloud platform (the area has the 4G network) through the 4G wireless data transmission module-4G network.
And the data cloud platform realizes data interaction among the tester terminal, the user monitoring terminal and the server. The cloud platform can realize comprehensive display, storage, inquiry and printing of various grounding parameters. During operation, according to the field requirements, the monitoring system can set and change parameters of the front-end monitoring device through the primary user account, for example, set the starting monitoring time interval, the overrun threshold value and the like of the acquisition terminal, and can send out specific content of an alarm event through short messages, mails and the like, so that corresponding measures can be taken in time, and safety accidents are avoided.
The monitoring receiving terminal transmits the received data to the cloud platform through the 4G wireless data transmission module, and remote online monitoring of all ground network parameter testers in a field area by a user is achieved. The monitoring receiving terminal can be a PC or a mobile terminal (mobile phone) and is used for accessing the cloud platform to obtain measurement data, and the functions of issuing instructions to the ground network parameter testing terminal, setting system parameters and the like can also be realized through the monitoring receiving terminal. The monitoring receiving terminal mainly comprises a Beidou RDSS short message communication module (based on an HS201 chip), a single-chip microcomputer controller, a 4G wireless data transmission module and a power supply module, and is shown in figure 4. The single chip microcomputer controller module receives user measurement data through the Beidou RDSS short message communication module and uploads the user measurement data to the cloud platform through the 4G wireless data transmission module, or receives instructions through the 4G wireless data transmission module and sends the instructions to the user control terminal (the user field does not have a 4G network) through the Beidou RDSS short message communication module.
The method mainly aims at the lightning protection grounding devices of the grounding resistance, high-frequency impedance, step voltage, step potential, contact voltage, contact potential, grounding conduction, power frequency and high-frequency equipotential connection, soil resistivity, SPD surge protector, high-speed rail traction station ground rail backflow measurement and the like of the grounding grid to carry out online monitoring, and can comprehensively analyze the running state of the whole grounding grid; as a user, the system can find problems in time and effectively solve the problems, can be used as a supervision department to scientifically, accurately and timely supervise the whole lightning protection grounding system, and can carry out systematic and comprehensive statistics and analysis on the collected ground network data, so that the disintegration of the traditional lightning protection grounding to digitization, networking and intelligence is realized, and the lightning protection disaster reduction and lightning protection supervision work can be better and more scientifically carried out.
The system realizes monitoring and management of various parameters of grounding systems such as transformer substation grounding, hydropower station grounding, wind generating set grounding, storeroom, transmission line tower grounding, underground mine equipment grounding, meteorological lightning protection grounding, petrochemical field grounding, gas station lightning protection grounding, communication grounding, railway facility grounding, building grounding, electrical equipment and the like through combination of various ground grid parameter testers.
The system can flexibly configure various required terminal acquisition modules according to users with different properties, is simple in field wiring, and only needs to take electricity (AC220V) nearby and install a measuring electrode. In a transformer substation or a boosting place and the like, various ground grid parameter testers can be arranged near an operation box in a field area, and can be wired through a cable trench at a long distance.
As shown in FIG. 5, which is a high-frequency impedance wiring diagram, dCGDistance between current pole and edge of grounding device to be tested, dPGThe distance between the voltage pole and the edge of the grounding device to be tested. Terminals C and P1 for connecting 30m wires to grounding steel bar (d)CG＝dPG30 m); the current electrode C and the voltage electrode P1 form a 30-degree paying-off included angle relative to the tested grounding body G; and the binding posts P2 and E are respectively connected with the 1.5-meter wire and are connected to the tested grounding body in parallel.
As shown in FIG. 6, when the soil resistivity test chart is performed by a quadrupole equidistance method, the distance a between two electrodes should be not less than 20 times of the electrode burying depth h, i.e. a is not less than 20 h. The test current flows into the two outer electrodes, and the grounding impedance tester obtains R by measuring the potential difference between the test current and the two inner electrodes, so as to obtain the apparent soil resistivity of the measured field. Fig. 7 is a soil resistivity test chart of a quadrupole non-equidistant method, when the electrode spacing is quite large, the potential difference of two electrodes inside the quadrupole equidistant method is rapidly reduced, and the potential difference can not be measured by an instrument or can not be measured accurately, and at the moment, the arrangement mode of the potential poles of fig. 7 can be used, the potential poles are arranged near corresponding current poles, and the measured potential difference can be increased. If the buried depth h of the electrode is small compared with the distances a and b, the resistivity p of the soil is pi a (a + b) R/b, wherein a is the distance between the current pole and the potential pole, and b is the distance between the potential poles.
The invention relates to an intelligent lightning protection online detection management platform combining software and hardware. The system transmits data to a management department through a short message function and a mobile internet of a Beidou system, and finally scientifically, accurately and timely monitors the whole lightning protection grounding system through a computer management system, and systematically counts and analyzes acquired ground network data, so that the disintegration of the traditional lightning protection grounding to digitization, networking and intelligence is realized, the lightning protection and disaster reduction work is better and more scientifically known, the labor cost is reduced, and the management efficiency is greatly improved. And the platform system comprises a mobile phone end application small program, so that a user can log in and check all real-time detection data of the relevant grounding system at any time.
Claims (6)
1. The utility model provides a lightning grounding device on-line remote monitoring management system which characterized in that includes: the system comprises a ground network parameter tester module, a user control terminal, a Beidou satellite, a 4G wireless data transmission module, a cloud platform, a server and a monitoring receiving terminal; the ground network parameter tester module consists of various parameter testers, realizes the measurement of various parameters, and transmits data to the user control terminal through a ZigBee-based wireless sensor network; the user control terminal receives data through a wireless sensor network and sends the data to the receiving terminal through the short message function of the Beidou satellite; the monitoring receiving terminal transmits the received data to the cloud platform through the 4G wireless data transmission module, and realizes remote online monitoring of all ground network parameter testers in a field area by a user; the cloud platform realizes data interaction among the ground network parameter tester module, the monitoring receiving terminal and the server.
2. The lightning protection grounding device online remote monitoring and management system of claim 1 wherein the counterpoise parameter tester module monitors values of ground resistance, step voltage, step potential, equipotential conduction, loop resistance, soil moisture temperature, soil resistivity, contact voltage, electrical integrity, high frequency impedance.
3. The lightning protection grounding device online remote monitoring and management system of claim 1, wherein the user control terminal comprises a controller, a wireless sensor network-based data transceiver module, a Beidou RNSS positioning module, a Beidou RDSS short message communication module, a 4G wireless data transmission module and a power supply module; the controller is communicated with each parameter tester through a data receiving and transmitting module based on a wireless sensor network to realize the collection of each test data and the issuing of an instruction; and the RNSS communication module is used for receiving the positioning information, and uploading the position information and the collected test data to the cloud platform through the RDSS module-receiving terminal-4G network or directly through the 4G wireless data transmission module.
4. The lightning protection grounding device online remote monitoring and management system according to claim 1, wherein the monitoring receiving terminal comprises a Beidou RDSS short message communication module, a single chip microcomputer controller, a 4G wireless data transmission module and a power supply module; the single chip microcomputer controller receives user measurement data through the Beidou RDSS short message communication module and uploads the user measurement data to the cloud platform through the 4G wireless data transmission module, or receives instructions through the 4G wireless data transmission module and sends the instructions to the user control terminal through the Beidou RDSS short message communication module.
5. The lightning protection grounding device on-line remote monitoring and management system according to claim 1, wherein the monitoring receiving terminal is a PC or a mobile terminal, and is used for accessing a cloud platform to obtain measurement data, issuing an instruction to a ground grid parameter testing module and setting system parameters.
6. The lightning protection grounding device online remote monitoring and management system of claim 1, wherein the user control terminal can directly transmit data to the cloud platform and the server through the 4G wireless data transmission module.
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