CN114866550A - Environment parameter and insulation fault early warning on-line monitoring system applied to ring main unit - Google Patents
Environment parameter and insulation fault early warning on-line monitoring system applied to ring main unit Download PDFInfo
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- 238000009413 insulation Methods 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 230000007613 environmental effect Effects 0.000 claims abstract description 16
- 238000007619 statistical method Methods 0.000 claims abstract description 6
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 5
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
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- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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Abstract
The application relates to an environmental parameter and insulation fault early warning online monitoring system applied to a ring main unit, which belongs to the technical field of online monitoring of the ring main unit and comprises a sensor module, a host module, a data transmission module, a cloud server and a user side data platform; the sensor module is in signal connection with the host module, the host module is in signal connection with the data transmission module, the data transmission module is in signal connection with the cloud server, the sensor module is used for monitoring insulation fault parameters and environmental parameters in real time and transmitting the monitored parameters to the host module, the host module transmits the parameters fed back by the sensor module to the cloud server through the data transmission module, the user side data platform can acquire the monitored data from the cloud server and perform statistical analysis on related data, field operation and maintenance personnel can acquire the monitored data and the statistical analysis on the related data from the cloud server through the user side data platform, the ring main unit is overhauled and maintained according to the related data, and faults are eliminated in a bud state.
Description
Technical Field
The application relates to the technical field of ring main unit online monitoring, in particular to an environmental parameter and insulation fault early warning online monitoring system applied to a ring main unit.
Background
With the rapid development of socio-economy, human beings have increasingly high dependence on energy systems, particularly power systems. The ring main unit is used as an important component of the power system, and the safe operation of the ring main unit has important significance. The ring main units are generally centralized in a box body, the structure is compact, the occupied area is small, the ring main units can be placed on a road or the edge of a building, the management of related power supply departments is convenient, and when a power accident happens, the power departments can timely handle the fault; the device is placed outdoors in a totally-enclosed and totally-insulated manner, and can adapt to severe outdoor environments; meanwhile, the manufacturing cost is low, the maintenance is convenient, and the economic benefit is high.
The ring main unit is common power transmission and distribution equipment and plays a role in control or protection in the power transmission and distribution process. Inside isolator, circuit breaker and the relevant protection device of having contained of looped netowrk cabinet, can break off the equipment of interconnect through its isolator when electric power system breaks down, protected the power equipment of connecting on the one hand and also protected electric power operating personnel's safety simultaneously. Therefore, the ring main unit plays an important role in the power system. Insulation defects can be generated on part of ring main units under the condition of years of continuous operation, and the insulation defects easily cause electric field distortion in the operation process of the switch cabinet, so that Partial Discharge (PD) occurs. If insulation defects in the switch cabinet are not found early and are allowed to develop to a serious degree, finally, insulation damage in the switch cabinet is caused to cause safety accidents, and huge economic loss and negative social influence are brought to enterprises.
In recent years, an event of burning loss of the ring main unit due to aging of an insulating material caused by local inside of the ring main unit occurs in a power grid for many times, so that early warning and monitoring of insulating faults of the ring main unit become one of important research directions. The ring main unit partial discharge detection means mainly includes: pulse current method, ultrahigh frequency method, transient voltage method, ultrasonic detection method, and optical detection method. But is difficult to accurately judge the defect conditions in the ring main unit due to the influence of the structure of the ring main unit, the test time and position, the tester and the anti-interference capability of the equipment. In addition, the monitoring method is used for monitoring the partial discharge, and even if the occurrence of the partial discharge is monitored, the insulation damage degree of the insulation member in the ring main unit cannot be accurately evaluated.
Disclosure of Invention
The application aims at the problems in the prior art, provides an environmental parameter and insulation fault early warning on-line monitoring system applied to a ring main unit, and is realized through the following technical scheme.
An environmental parameter and insulation fault early warning online monitoring system applied to a ring main unit comprises a sensor module, a host module, a data transmission module, a cloud server and a user side data platform;
the sensor module is in signal connection with the host module;
the host module is in signal connection with the data transmission module;
the data transmission module is in signal connection with the cloud server;
the sensor module is used for monitoring insulation fault parameters and environmental parameters in real time and transmitting the monitored parameters to the host module;
the host module transmits the parameters fed back by the sensor module to the cloud server through the data transmission module;
the data transmission module transmits the control instruction received from the cloud server to the host module;
and the user side data platform acquires monitoring data from the cloud server and performs statistical analysis on related data.
The application is further configured to: the sensor module comprises a first processor, a characteristic signal sensor, a temperature sensor, a humidity sensor, a first wireless module and a first power interface;
the first processor is respectively connected with the characteristic signal sensor, the temperature sensor, the humidity sensor, the first wireless module and the first power interface;
the characteristic signal sensor is used for monitoring an insulation fault parameter;
the temperature sensor is used for monitoring temperature parameters;
the humidity sensor is used for monitoring a humidity parameter;
the first wireless module is used for being connected with the host module;
the first power interface is connected with a power supply to supply power to the sensor module.
The application is further configured to: the characteristic signal sensor monitors that the gas type is carbon monoxide.
The application is further configured to: the host module comprises a second processor, a display screen, a key, a serial port, a second wireless module and a second power interface;
the second processor is connected with the display screen, the keys, the serial port, the second wireless module and the second power interface;
the display screen is used for displaying the monitoring value fed back by the sensor module;
the serial port is used for being connected with the data transmission module through the serial port;
the second wireless module is connected with the first wireless module;
the second power interface is connected with a power supply to supply power to the host module.
The application is further configured to: the user side data platform is software installed at a mobile phone end or a PC end, and a characteristic signal trend chart, a temperature trend chart, a humidity trend chart and a system running state can be checked by logging in the user side data platform at the mobile phone end or the PC end.
The application is further configured to: the user side data platform is provided with alarm levels, and the alarm levels comprise attention values, inspection values and damage values;
the attention value is a numerical value needing continuous attention, and operation is not needed;
the inspection value is defined as a numerical value needing to be checked to the site;
the damage value is defined as a numerical value of insulation damage caused by the existence of insulation faults in the ring main unit.
The application is further configured to: the value of interest is 5 ppm.
The application is further configured to: the check value was 20 ppm.
The application is further configured to: the damage value was 30 ppm.
Compared with the prior art, the beneficial effect of this application is:
the sensor module transmits insulation fault parameters and environmental parameters in the real-time monitoring ring main unit to the host module, the host module transmits the parameters to the cloud server through the data transmission module, on-site operation and maintenance personnel can acquire statistical analysis of monitoring data and related data from the cloud server through the user end data platform, the ring main unit is maintained according to the related data, faults are eliminated in a bud state, safety accidents are avoided, and huge economic loss and negative social influence are brought to enterprises.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic block diagram of an online monitoring system according to an embodiment of the present disclosure;
fig. 2 is a block diagram of a sensor module according to an embodiment of the present disclosure;
fig. 3 is a block diagram of a host module according to an embodiment of the present disclosure;
fig. 4 is a characteristic signal concentration value trend graph and a temperature and humidity trend graph displayed on the user-side data platform according to the embodiment of the present disclosure.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to accurately judge the defect condition in the ring main unit, referring to fig. 1, a structural schematic block diagram of the online monitoring system provided by the embodiment of the present application includes a sensor module, a host module, a data transmission module, a cloud server and a user side data platform; the sensor module is in signal connection with the host module; the host module is in signal connection with the data transmission module; the data transmission module is in signal connection with the cloud server; the sensor module is fixed right above a mechanism chamber to a cable chamber secondary wire threading hole in the ring main unit, and the host module and the data transmission module are fixed in the ring main unit instrument chamber. The power supplies of the sensor module, the host module and the data transmission module are taken from the outlet of the AC220V switch of the ring main unit instrument room, and the power adapters of the sensor module, the host module and the data transmission module are respectively connected to the power strip led out from the outlet of the AC220V switch of the instrument room. The sensor module is used for monitoring insulation fault parameters and environmental parameters in real time and transmitting the monitored parameters to the host module, the host module transmits the parameters fed back by the sensor module to the cloud server through the data transmission module, the data transmission module transmits control instructions received from the cloud server to the host module, the user side data platform acquires monitoring data from the cloud server and performs statistical analysis on related data, the ring main unit is maintained and repaired according to the related data, faults are eliminated in a bud state, safety accidents are avoided, and huge economic losses and negative social influences are brought to enterprises.
As shown in fig. 2, the sensor module includes a first processor, a characteristic signal sensor, a temperature sensor, a humidity sensor, a first wireless module, and a first power interface.
The first processor adopts a 32-bit embedded new chip processor, and is respectively connected with the characteristic signal sensor, the temperature sensor, the humidity sensor, the first wireless module and the first power interface.
The characteristic signal sensor is used for monitoring insulation fault parameters, and the type of the monitored gas of the characteristic signal sensor is carbon monoxide, because the insulation part in the ring main unit can generate insulation damage due to high temperature or partial discharge to release the carbon monoxide. The characteristic signal sensor has the temperature compensation function, the temperature compensation range is-40 ℃ to +70 ℃, the measurement concentration range is 0-1000ppm, the resolution is 0.1ppm, and the error is +/-3%.
The temperature sensor is used for monitoring temperature parameters, and the humidity sensor is used for monitoring humidity parameters; because the ring main unit has the internal humidity not higher than 80% and the temperature not lower than 0 ℃ under the condition that the secondary equipment (dehumidifying equipment and heating equipment) normally operates. The temperature sensor has the measuring range of-40-125 ℃, the resolution of 0.1 ℃ and the error of +/-0.2 ℃. The measurement range of the humidity sensor is 0-100%, the resolution is 0.1%, and the error is +/-2%.
The first wireless module is used for being connected with the host module, and the first power interface is connected with a power supply to supply power to the sensor module.
As shown in fig. 3, the host module includes a second processor, a display screen, a key, a serial port, a second wireless module, and a second power interface.
The second processor adopts a 32-bit embedded new chip processor, and is connected with the display screen, the keys, the serial port, the second wireless module and the second power interface.
The display screen chooses 3.5 cun TFT liquid crystal display for the monitoring value of display sensor module feedback, numerical values such as carbon monoxide concentration, temperature and humidity.
The serial port supports RS485 and RS-232, serial communication is realized with the data transmission module, the data transmission module can also transmit the received control instruction to the host module for execution, and remote control of the monitoring system can be realized, and the functions comprise remote program upgrading, remote resetting and the like.
The second wireless module is connected with the first wireless module, and the sensor module is in wireless communication with the host module to realize data transmission. The second power interface is connected with a power supply to supply power to the host module.
The data transmission module adopts a 4G DTU (4G network data transmission unit), supports transparent data transmission, TCP and UD network protocols, TCP/UDP protocols and heartbeat packet and registration packet functions. The maximum downlink rate of LTE-FDD is 200Mbps, the maximum uplink rate is 75Mbps, the maximum downlink rate of LTE-TDD is 130Mbps, and the maximum uplink rate is 35 Mbps.
The cloud server is provided with a firewall, so that viruses on the Internet can be prevented from being transmitted to an internal network, activities on the Internet can be effectively recorded, and user points can be limited from being exposed. The database is backed up in the whole database 4 times a week, so that the problem of data loss caused by database crash or damage is prevented.
The user end data platform is software installed at a mobile phone end or a PC end, login is carried out at the mobile phone end or the PC end, and a characteristic signal concentration value trend chart, a temperature and humidity trend chart and a system operation state can be checked. The client data platform is provided with an alarm grade, and the alarm grade is divided into a concern value, a check value and a damage value. The user side data platform can record and upload system installation and operation and maintenance information. Set for the on-the-spot fortune dimension personnel as the unit with sensor module, in case reach the accurate propelling movement that the early warning value can carry out alarm information, make things convenient for on-the-spot fortune dimension personnel to in time handle the site conditions according to alarm information.
The attention value is a value requiring continuous attention, no operation is required, and the attention value is 5 ppm.
The inspection value is defined as the value that needs to be viewed to the field, and the inspection value is 20 ppm.
The damage value is defined as the numerical value of insulation damage caused by the existence of insulation faults in the ring main unit, and the damage value is 30 ppm.
The alarm value can be set according to the actual operation temperature and humidity of the ring main unit and the installation position of the sensor.
And when the system monitors the case of the insulation fault, the mobile phone receives a short message notice automatically sent by the insulation fault early warning online monitoring system installed on the ring main unit through the user side data platform software, and displays that the ring main unit characteristic signal reaches a damage value. The mobile phone logs in the WeChat applet for fixed-point viewing, and a system monitoring data trend graph is shown in FIG. 4.
As can be seen from FIG. 4, the characteristic signal sharply increases from 50 at 15, reaches a maximum of 30.5ppm at 30 at 16, and then gradually decreases until 47 data are substantially normal at 20. And the humidity in the ring main unit is obviously increased and the temperature is obviously reduced at the point where the characteristic signal is sharply increased. The data shows that the ring main unit starts to continuously damage and decompose the internal insulating part from about 15 minutes to about 50 minutes, gradually slows down the decomposition rate of the insulating part from about 16 minutes to about 30 minutes, and stops decomposing from about 47 minutes to about 20 minutes. And 17, the scene is checked at the left and right, and obvious continuous discharge sound can be heard in the scene. And then, power failure is carried out to investigate the fault condition, and obvious discharge traces can be seen near the stress cone of the separable connector in the cable chamber of the ring main unit. It was thus preliminarily confirmed that this insulation damage was caused by discharge in the vicinity of the stress cone of the separable connector. In order to prevent all parts in the ring main unit from being burnt out due to accidental power failure caused by insulation breakdown and expansion of accidents, the separable connector is replaced.
The above embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above embodiments are only for the purpose of describing the embodiments of the present application and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.
Claims (9)
1. The utility model provides an environmental parameter and insulating trouble early warning on-line monitoring system for looped netowrk cabinet which characterized in that includes: the system comprises a sensor module, a host module, a data transmission module, a cloud server and a user side data platform;
the sensor module is in signal connection with the host module;
the host module is in signal connection with the data transmission module;
the data transmission module is in signal connection with the cloud server;
the sensor module is used for monitoring insulation fault parameters and environmental parameters in real time and transmitting the monitored parameters to the host module;
the host module transmits the parameters fed back by the sensor module to the cloud server through the data transmission module;
the data transmission module transmits the control instruction received from the cloud server to the host module;
and the user side data platform acquires monitoring data from the cloud server and performs statistical analysis on related data.
2. The system for online monitoring of environmental parameters and early warning of insulation faults applied to the ring main unit as claimed in claim 1, wherein the sensor module comprises a first processor, a characteristic signal sensor, a temperature sensor, a humidity sensor, a first wireless module and a first power interface;
the first processor is respectively connected with the characteristic signal sensor, the temperature sensor, the humidity sensor, the first wireless module and the first power interface;
the characteristic signal sensor is used for monitoring an insulation fault parameter;
the temperature sensor is used for monitoring temperature parameters, and the humidity sensor is used for monitoring humidity parameters;
the first wireless module is used for being connected with the host module;
the first power interface is connected with a power supply to supply power to the sensor module.
3. The environmental parameter and insulation fault early warning online monitoring system applied to the ring main unit as claimed in claim 2, wherein the characteristic signal sensor monitors that the gas type is carbon monoxide.
4. The environmental parameter and insulation fault early warning online monitoring system applied to the ring main unit as claimed in claim 3, wherein the host module comprises a second processor, a display screen, a key, a serial port, a second wireless module and a second power interface;
the second processor is connected with the display screen, the keys, the serial port, the second wireless module and the second power interface;
the display screen is used for displaying the monitoring value fed back by the sensor module;
the serial port is used for being connected with the data transmission module through the serial port;
the second wireless module is connected with the first wireless module;
the second power interface is connected with a power supply to supply power to the host module.
5. The system of claim 4, wherein the user data platform is software installed at a mobile phone end or a PC end, and the user data platform is logged on the mobile phone end or the PC end to check a characteristic signal trend graph, a temperature trend graph, a humidity trend graph and a system operation state.
6. The system for monitoring environmental parameters and insulation fault early warning online applied to the ring main unit as claimed in claim 5, wherein the user data platform is provided with alarm levels, the alarm levels including attention values, inspection values and damage values;
the attention value is a numerical value needing continuous attention, and operation is not needed;
the inspection value is defined as a numerical value needing to be checked to the site;
the damage value is defined as a numerical value of insulation damage caused by the existence of insulation faults in the ring main unit.
7. The system of claim 6, wherein the attention value is 5 ppm.
8. The system for the online monitoring of environmental parameters and insulation fault early warning applied to the ring main unit as claimed in claim 6, wherein the inspection value is 20 ppm.
9. The system for the online monitoring of environmental parameters and insulation fault early warning applied to the ring main unit as claimed in claim 6, wherein the damage value is 30 ppm.
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| CN202210527910.XA CN114866550A (en) | 2022-05-16 | 2022-05-16 | Environment parameter and insulation fault early warning on-line monitoring system applied to ring main unit |
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| CN202210527910.XA CN114866550A (en) | 2022-05-16 | 2022-05-16 | Environment parameter and insulation fault early warning on-line monitoring system applied to ring main unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115361531A (en) * | 2022-10-24 | 2022-11-18 | 广东电网有限责任公司佛山供电局 | Intelligent ring main unit monitoring system based on remote video monitoring |
| CN115494362A (en) * | 2022-11-02 | 2022-12-20 | 河北智恒电力科技有限公司 | Ring main unit partial discharge on-line monitoring system |
| CN116973704A (en) * | 2023-08-01 | 2023-10-31 | 融研(上海)电气技术有限公司 | Switch equipment and cable line insulation fault monitoring system |
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