CN210183562U - On-spot SF6 leakage alarm monitoring devices of transformer substation - Google Patents

On-spot SF6 leakage alarm monitoring devices of transformer substation Download PDF

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Publication number
CN210183562U
CN210183562U CN201921096780.9U CN201921096780U CN210183562U CN 210183562 U CN210183562 U CN 210183562U CN 201921096780 U CN201921096780 U CN 201921096780U CN 210183562 U CN210183562 U CN 210183562U
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China
Prior art keywords
sensor
module
monitoring
lora module
power
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CN201921096780.9U
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Inventor
Ying Zhang
张英
Zhe Liu
刘喆
Hao Mu
牧灝
Tao Yang
杨涛
Zhenghao Gao
高正浩
Huan Huang
黄欢
Shiqin Zhao
赵世钦
Yun Pan
潘云
Ting Zhang
张婷
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Guizhou Power Grid Co Ltd
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Guizhou Power Grid Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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Abstract

The utility model discloses a substation site SF6 leakage alarm monitoring device, wherein a monitoring module is connected with a monitoring host through ROLA wireless network; the monitoring module is powered by a battery; a host LORA module sends a data request instruction; a sensor-end LORA module receives data in a power-saving mode; the sensor LORA module forwards the received data to the processor; the processor sets the sensor LORA module to be in a working mode and sends back complex data to the sensor LORA module; the sensor-side LORA module forwards the reply data to the host-side LORA module, so that the monitoring host receives the reply data; after the sensor-side LORA module finishes sending the reply data, the processor sets the sensor-side LORA module to be in a power-saving mode; the problem that the position cannot be moved due to the limitation of wiring and the flexibility is poor is solved; the problems that field wiring is troublesome, the exposed wiring groove is not attractive and the like are solved.

Description

On-spot SF6 leakage alarm monitoring devices of transformer substation
Technical Field
The utility model belongs to the SF of transformer substation6The leakage detection technology especially relates to a transformer substation field SF6 leakage alarm monitoring device.
Background
Substation field SF in the prior art6Leakage alarm monitoring device SF6The leakage alarm monitoring device mainly comprises a monitoring host and monitoring modules, wherein one monitoring host is connected with a plurality of monitoring modules on site; the monitoring modules distributed at all points need to be subjected to power supply wiring and communication wiring, when the cables are buried under the cement ground, once the monitoring points are arranged, the monitoring points cannot be moved due to wiring limitation, the problems of poor flexibility and the like exist, and if the cables are wired through the wire grooves, the problems of troublesome field wiring, unattractive wired wire grooves and the like exist.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a transformer substation field SF6 leakage alarm monitoring device to the monitoring module that solves transformer substation field distribution at each point all needs to carry out power wiring and communication wiring, once the monitoring point is arranged to these cables when burying in cement ground, will not movable position by the restriction of wiring, has the poor scheduling problem of flexibility, if through the wire casing wiring, has the field wiring trouble, obviously lays a great deal of problems such as wire casing is unsightly.
The technical scheme of the utility model is that:
on-spot SF of transformer substation6Leakage alarm monitoring devices, it includes: the monitoring system comprises a monitoring host and a monitoring module, wherein the monitoring module is connected with the monitoring host through a ROLA wireless network; the monitoring module is powered by a battery.
The monitoring module comprises a TI-based MSP430F235 low-power-consumption processor, and the MSP430F235 low-power-consumption processor is connected with the sensor unit; the MSP430F235 low-power-consumption processor is connected with a sensor LORA module through a lead; the sensor unit comprises an oxygen sensor and a sulfur hexafluoride sensor; the oxygen sensor and the sulfur hexafluoride sensor are respectively connected with the MSP430F235 low-power-consumption processor through the AD module.
The monitoring host comprises a GPRS forwarding circuit board based on STM32F103 and a 100Mbps network forwarding circuit board, and the GPRS forwarding circuit board based on STM32F103 is connected with the 100Mbps network forwarding circuit board through RS 232; and the GPRS forwarding circuit board based on the STM32F103 is connected with a host LORA module through a lead.
The monitoring method of the substation site SF6 leakage alarm monitoring device comprises the following steps:
step 1, a host LORA module sends a data request instruction;
step 2, a sensor-end LORA module receives data in a power-saving mode;
step 3, the sensor LORA module forwards the received data to the MSP430F235 low-power-consumption processor;
step 4, the MSP430F235 low-power-consumption processor sets the sensor LORA module to be in a working mode and sends back complex data to the sensor LORA module;
step 5, the sensor-side LORA module forwards the reply data to the host-side LORA module, so that the monitoring host receives the reply data;
and 6, after the sensor LORA module finishes sending the reply data, the MSP430F235 low-power-consumption processor sets the sensor LORA module to be in a power-saving mode.
The utility model discloses beneficial effect:
the utility model designs the processor of the monitoring module as MSP430F235 low power consumption processor, the processor is a 16-bit ultra-low power consumption mixed type single chip microcomputer with a simplified instruction set, and the working current is less than 0.5mA in the low power consumption mode; therefore, power can be supplied through the battery to avoid the arrangement of a power line; by integrating the LORA module in the MSP430F235 low-power-consumption processor, data information of the monitoring module is wirelessly transmitted to the monitoring host through the LORA module, and signal lines are prevented from being laid; the utility model discloses a narrowband thing networking LORA transmission technology design research and development low-power consumption's wireless detection module, convenient stationing is with data transmission to host computer. The host function has all functions of a GPRS protocol conversion module, and also has the functions of data receiving and processing of a wireless sensor module, fan control, real-time display and the like; the LORA narrow-band Internet of things transmission has extremely low power consumption, a linear spread spectrum technology is adopted, the existing cellular base station is not needed, independent network establishment can be realized without an SIM card, the operation frequency band is 470-518MHz, the transmission distance is 1-3 km, the penetrability is high, and the LORA narrow-band Internet of things transmission is particularly suitable for the local area ad hoc network of a transformer substation and then is transmitted in a concentrated mode; because the utility model has no cable between the host and the monitoring module, the monitoring terminal is convenient to move, and the monitoring flexibility is improved; the problems that power supply wiring and communication wiring are needed to be carried out on monitoring modules distributed at each point in a transformer substation field, the monitoring points are arranged once the cables are buried under the cement ground, the positions cannot be moved due to wiring limitation, flexibility is poor and the like are solved, and if the cables are wired through the wire grooves, the problems that field wiring is troublesome, the wire grooves are not attractive in appearance and the like are solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the monitoring host structure of the present invention;
fig. 3 is the schematic view of the monitoring module structure of the present invention.
Detailed Description
On-spot SF of transformer substation6Leakage alarm monitoring devices, it includes: monitoring host and monitoring module, instituteThe monitoring module is connected with the monitoring host through a ROLA wireless network; the monitoring module is powered by a battery.
The monitoring module comprises a TI-based MSP430F235 low-power-consumption processor, and the MSP430F235 low-power-consumption processor is connected with the sensor unit; the MSP430F235 low-power-consumption processor is connected with the sensor-end LORA module through a TTL level interface lead; the sensor unit comprises an oxygen sensor and a sulfur hexafluoride sensor; the oxygen sensor and the sulfur hexafluoride sensor are respectively connected with the MSP430F235 low-power-consumption processor through the AD module.
The monitoring module adopts a battery for power supply, and the low-power design is the key of the utility model in order to ensure that the whole module works continuously for more than 1 year; the utility model discloses a MSP430F235 low-power consumption treater based on TI, TI's MSP430 are a section has 16 ultralow consumption mixed type singlechips of simplifying the instruction set, and under the low-power consumption mode, its operating current is less than 0.5mA, is particularly useful for the occasion of the long-time work of adopting battery powered.
The sensor unit selects an intelligent oxygen sensor and a sulfur hexafluoride sensor; wherein, O2The accuracy of the sensor is +/-2% FS, the measuring range is 0-25%, and SF6The sensor detection principle is infrared optical absorption, SF6The accuracy of the sensor is +/-3% FS, the measuring range is 0-3000 mu L/L, and the power supply is 5V. For low-power operation, the CPU controls the power supply to sample once every 15min, and the power supply is disconnected after sampling; to conserve battery power as much as possible.
The monitoring host comprises a GPRS forwarding circuit board based on STM32F103 and a 100Mbps network forwarding circuit board, and the GPRS forwarding circuit board based on STM32F103 is connected with the 100Mbps network forwarding circuit board through RS 232; and the GPRS forwarding circuit board based on the STM32F103 is connected with a host LORA module through a lead.
The monitoring host is based on a GPRS forwarding circuit board and a 100Mbps network forwarding circuit board of the STM32F 103; the principle of the 100Mbps network forwarding circuit board is the same as that of the GPRS protocol forwarding module. The LORA module directly adopts the atomic wireless module of positive point, adopts TTL level interface and STM32F 103's serial ports to interact, carries out the information interaction through IO and I2C and switch control panel simultaneously. The relay state is controlled through IO between switch control panel and the main control chip STM32F103 to control alarm output and fan state, through I2C bus transmission temperature and humidity state value. Meanwhile, the switch control panel has the power supply processing function.
The main control chip of the 100Mbps network forwarding circuit board also adopts STM32F103, and the network chip adopts a hundred mega Ethernet chip DM 9000.
The monitoring host machine adopts an ARM chip STM32F103 of the Italian semiconductor company as a control main chip, the GPRS modulation chip adopts SIM900A which is a GSM/GPRS module specially designed for the markets of China mainland and India, and the working frequency band is as follows: EGSM 900MHz and DCS 1800MHz, have SIM card interface, and adopt serial interface and MCU to carry out data interaction. The reserved 485 interface of the control main chip can be connected with the existing 485 uploading bus of the leakage alarm host computer in parallel, and the existing uploading data is analyzed to realize data forwarding. And meanwhile, a 100M network forwarding circuit board is designed, and data transmitted by the STM32F103 through RS232 is forwarded to the station end intranet.
A directional transmission mode is adopted between the host LORA module and the sensor LORA module, if the address of the host module is 0XFFF, the module is in a broadcast monitoring mode, and the transmitted data can be received (broadcast) by all other sensor modules with the same rate and channel; while data transmissions of all modules at the same rate and channel may be monitored.
The monitoring method of the substation site SF6 leakage alarm monitoring device comprises the following steps:
step 1, a host LORA module sends a data request instruction;
step 2, a sensor-end LORA module receives data in a power-saving mode;
step 3, the sensor LORA module forwards the received data to the MSP430F235 low-power-consumption processor;
step 4, the MSP430F235 low-power-consumption processor sets the sensor LORA module to be in a working mode and sends back complex data to the sensor LORA module;
step 5, the sensor-side LORA module forwards the reply data to the host-side LORA module, so that the monitoring host receives the reply data;
and 6, after the sensor LORA module finishes sending the reply data, the MSP430F235 low-power-consumption processor sets the sensor LORA module to be in a power-saving mode.
The method specifically comprises the following steps: the sensor end LORA module communicates with MSP430F235 through TTL level, the sensor end LORA module works in power saving mode, the sensor end LORA module is in the module and is in the dormant state under this operating mode, the serial ports will close, can't receive the serial port data from outside MCU, so this mode does not have the function of wireless transmission, can only regularly monitor outside wireless data, in case receive effectual awakening code after, the sensor end LORA module will last to be in the receiving state, wait that whole valid data package is received and finish, then sensor end LORA module exports AUX high level, and postpone 20ms after, open the serial ports and send the wireless data that receive through TXD, export AUX low level after finishing. After receiving the serial port data, the MSP430F235 sets the sensor LORA module to a general mode, also called a working mode, replies to the monitoring host with data, and sets the sensor LORA module to a power saving mode after sending is completed, so as to meet the requirement of low power consumption.

Claims (1)

1. A substation site SF6 leakage alarm monitoring device, comprising: monitoring host computer and monitoring module, its characterized in that: the monitoring module is connected with the monitoring host through a ROLA wireless network; the monitoring module is powered by a battery; the monitoring module comprises a TI-based MSP430F235 low-power-consumption processor, and the MSP430F235 low-power-consumption processor is connected with the sensor unit; the MSP430F235 low-power-consumption processor is connected with a sensor LORA module through a lead; the sensor unit comprises an oxygen sensor and a sulfur hexafluoride sensor; the oxygen sensor and the sulfur hexafluoride sensor are respectively connected with the MSP430F235 low-power-consumption processor through the AD module; the monitoring host comprises a GPRS forwarding circuit board based on STM32F103 and a 100Mbps network forwarding circuit board, and the GPRS forwarding circuit board based on STM32F103 is connected with the 100Mbps network forwarding circuit board through RS 232; and the GPRS forwarding circuit board based on the STM32F103 is connected with a host LORA module through a lead.
CN201921096780.9U 2019-07-12 2019-07-12 On-spot SF6 leakage alarm monitoring devices of transformer substation Active CN210183562U (en)

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Application Number Priority Date Filing Date Title
CN201921096780.9U CN210183562U (en) 2019-07-12 2019-07-12 On-spot SF6 leakage alarm monitoring devices of transformer substation

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Application Number Priority Date Filing Date Title
CN201921096780.9U CN210183562U (en) 2019-07-12 2019-07-12 On-spot SF6 leakage alarm monitoring devices of transformer substation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113175953A (en) * 2021-04-28 2021-07-27 国网河南省电力公司检修公司 Integrated SF6 gas online sensing device based on Internet of things

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113175953A (en) * 2021-04-28 2021-07-27 国网河南省电力公司检修公司 Integrated SF6 gas online sensing device based on Internet of things

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