CN103108034A - Substation equipment monitoring and early warning terminal - Google Patents
Substation equipment monitoring and early warning terminal Download PDFInfo
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- CN103108034A CN103108034A CN2013100098490A CN201310009849A CN103108034A CN 103108034 A CN103108034 A CN 103108034A CN 2013100098490 A CN2013100098490 A CN 2013100098490A CN 201310009849 A CN201310009849 A CN 201310009849A CN 103108034 A CN103108034 A CN 103108034A
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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
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- 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
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Abstract
The invention discloses a substation equipment monitoring and early warning terminal which comprises a circuit board, a processor, a communication module, an alarm module, a display module, an intelligent equipment data collecting circuit, a telemetering signal collecting circuit, a remote communication signal collecting circuit, a remote control circuit and a power module, wherein the processor, the communication module, the alarm module, the display module, the intelligent equipment data collecting circuit, the telemetering signal collecting circuit, the remote communication signal collecting circuit, the remote control circuit and the power module are arranged on the circuit board. The processor is connected with a substation equipment operating status monitoring device or an equipment operating environment monitoring device through the intelligent equipment data collecting circuit, the telemetering signal collecting circuit, the remote communication signal collecting circuit and the remote circuit, and carries out data interaction with an upper computer with the communication module accessing to a communication network. The substation equipment monitoring and early warning terminal can carry out on-line monitoring to the operating statuses of various equipment of a transformer substation and factors affecting the safe operating of the transformer substation, enables fault information to be detected in an early stage and processed in time, enables operating personnel to know the operating conditions of the equipment well, and not only guarantees the safe operating of the equipment of the transformer substation, but also reduces the management and maintenance cost of the equipment of the transformer substation.
Description
Technical field
The present invention relates to a kind of electric power system on-Line Monitor Device, specifically a kind of substation equipment monitoring and warning terminal.
Background technology
The safe operation of substation equipment is the basic guarantee of building intelligent power network.At large-scale industrial and mineral energy enterprise, zone large due to plant area's scale, that need monitor is many, leans on operating personnel's normal tour to be difficult to realize comprehensive inspection of device security problem and ambient conditions and give warning in advance, and site safety has become very distinct issues.
Therefore, in the urgent need to a kind of monitoring and warning terminal equipment on the running status of on-the-spot various device and the factor that affects safe operation as: improperly enter, fire, floods, toy enter cable trough, overheated etc. realize on-line monitoring and give warning in advance, make the fault message can early detection and in time processed, make the operation operations staff grasp in real time machine operation, solve the monitoring blank in the tour cycle, strengthen the monitoring to various kinds of equipment and ambient conditions.
Summary of the invention
The deficiency that exists for overcoming above-mentioned prior art, the invention provides a kind of substation equipment monitoring and warning terminal, it not only can realize the running status of transformer station's various device and the environmental factor that affects substation safety operation are carried out Real-Time Monitoring, and carries out early warning can abnormal conditions occur in transformer station the time.
The present invention solves the technical scheme that its technical problem takes: a kind of substation equipment monitoring and warning terminal, it is characterized in that, comprise circuit board and be arranged on processor, communication module, alarm module, display module, data acquisition module, remote control circuit and power module on circuit board, described data acquisition module comprises smart machine data acquisition circuit, telemetered signal Acquisition Circuit and remote signals Acquisition Circuit; Described communication module, alarm module, display module, smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit, remote control circuit are connected with processor with power module and are connected; Described processor is connected with operating condition of transformer station equipment monitoring device or equipment operating environment monitoring device with remote control circuit, and carries out data interaction by communication module incoming communication network and host computer by smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit respectively.
Preferably, described monitoring and warning terminal equipment adopts frame structure, and described processor, communication module, alarm module, display module, smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit, remote control circuit are connected by Europlug with power module and are connected with circuit board.
Preferably, described communication network comprises wired communication network and/or wireless communication networks, described wire communication network comprises Networks of Fiber Communications and special telephone line network, and described wireless communication networks comprises 3G cordless communication network, Zigbee wireless network and public network GPRS communication network.
Preferably, described equipment running status monitoring device and equipment operating environment monitoring device are connected with the monitoring and warning terminal equipment by MBUS bus, RS485 bus or tcp/ip communication network respectively.
Preferably, described equipment running status monitoring device comprises one or more in Temperature Humidity Sensor, local discharge detection device, little water sensor, electric quantity monitoring instrument and SF6 toxic gas detection device.
Preferably, described equipment operating environment monitoring device comprises one or more in Temperature Humidity Sensor, sense smoke sensor, water sensor, serial ports camera, naked light transducer, monitoring poisonous gas device and thermal infrared imager.
The invention has the beneficial effects as follows, after adopting said structure, the present invention has following functions:
(1) equipment on-line detects.The present invention by the equipment running status monitoring devices such as Temperature Humidity Sensor, local discharge detection device, little water sensor, electric quantity monitoring instrument and SF6 toxic gas detection device realize the detection of substation equipment temperature online, Partial Discharge Detection, oily water content air content, running state of air conditioner detection, power supply quality, power devices quality testing, thunder resisting equipment detects online and the function such as SF6 toxic gas detection and reporting to the police when abnormal conditions occurring.
(2) environment and state are online detects and Realtime Alerts.The present invention passes through Temperature Humidity Sensor, the sense smoke sensor, water sensor, the operation environment of substation equipments such as the equipment operating environment monitoring devices such as serial ports camera, naked light transducer, monitoring poisonous gas device and thermal infrared imager are realized fire, floods, smog, improperly entered, cable trough water inlet and toy are invaded cable trough are monitored, and Monitoring Data is uploaded to host computer in real time, the data message that described host computer shows in real time and storage monitoring and warning terminal equipment is uploaded.
The present invention can guarantee equipment reliability of operation problem after the transformer station of various electric pressures puts into operation, solve the safety management problem after transformer station's unattended operation; Realized the telemonitoring problem of unattended operation transformer station, set up a substation equipment and safely and steadily run environment; Can realize online the detection to the running status of transformer station's various device and the factor that affects the substation safety operation, make the fault message can early detection and in time processed, make the operations staff grasp in real time the equipment operating condition, solved the monitoring of operation team in the tour cycle blank, strengthened the monitoring to converting equipment, thereby ensured the safe operation of substation equipment and reduced the management maintenance cost of substation equipment.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing:
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the concrete system principle diagram of using of the present invention one.
Embodiment
As depicted in figs. 1 and 2, a kind of substation equipment monitoring and warning terminal of the present invention, it is characterized in that, comprise circuit board and be arranged on processor, communication module, alarm module, display module, data acquisition module, remote control circuit and power module on circuit board, described data acquisition module comprises smart machine data acquisition circuit, telemetered signal Acquisition Circuit and remote signals Acquisition Circuit; Described communication module, alarm module, display module, smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit, remote control circuit are connected with processor with power module and are connected; Described processor is connected with operating condition of transformer station equipment monitoring device or equipment operating environment monitoring device with remote control circuit, and carries out data interaction by communication module incoming communication network and host computer by smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit respectively.
Preferably, described monitoring and warning terminal equipment adopts frame structure, and described processor, communication module, alarm module, display module, smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit, remote control circuit are connected by Europlug with power module and are connected with circuit board.
Fig. 2 is the concrete system principle diagram of using of the present invention one.As shown in Figure 2, a kind of substation safety monitor and early warning system that is formed by substation equipment monitoring and warning terminal of the present invention, it comprises host computer, communication network, monitoring and warning terminal equipment and some detection and control terminal equipment, described monitoring and warning terminal equipment respectively with the detection and control terminal equipment connection, and be connected with host computer by communication network; Wherein, described detection and control terminal equipment comprises equipment running status monitoring device and equipment operating environment monitoring device, described equipment running status monitoring device and equipment operating environment monitoring device are arranged on substation field, send to the monitoring and warning terminal equipment in order to the substation field Monitoring Data that will gather, data message after described monitoring and warning terminal equipment is processed the field monitoring data message that receives and will process sends to host computer by communication network, simultaneously outputting alarm information.
Preferably, described communication network comprises wired communication network and/or wireless communication networks, described wire communication network comprises Networks of Fiber Communications and special telephone line network, and described wireless communication networks comprises 3G cordless communication network, Zigbee wireless network and public network GPRS communication network.
Preferably, described equipment running status monitoring device and equipment operating environment monitoring device are connected with the monitoring and warning terminal equipment by MBUS bus, RS485 bus or tcp/ip communication network respectively.
Preferably, described equipment running status monitoring device comprises one or more in Temperature Humidity Sensor, local discharge detection device, little water sensor, electric quantity monitoring instrument and SF6 toxic gas detection device.
Preferably, described equipment operating environment monitoring device comprises one or more in Temperature Humidity Sensor, sense smoke sensor, water sensor, serial ports camera, naked light transducer, monitoring poisonous gas device and thermal infrared imager.
Monitoring and warning terminal equipment of the present invention is a kind of multi-channel data acquisition controller based on standard RS232, RS485 serial communication or Ethernet, the communication modes such as wireless.It controls by collection and output to field data the Real-Time Monitoring of realizing ruuning situation or the environmental aspect of equipment, and when the operational environment appearance is abnormal, reaches alarm and start emergence treatment scheme.
Claims (6)
1. substation equipment monitoring and warning terminal, it is characterized in that, comprise circuit board and be arranged on processor, communication module, alarm module, display module, data acquisition module, remote control circuit and power module on circuit board, described data acquisition module comprises smart machine data acquisition circuit, telemetered signal Acquisition Circuit and remote signals Acquisition Circuit; Described communication module, alarm module, display module, smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit, remote control circuit are connected with processor with power module and are connected; Described processor is connected with operating condition of transformer station equipment monitoring device or equipment operating environment monitoring device with remote control circuit, and carries out data interaction by communication module incoming communication network and host computer by smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit respectively.
2. a kind of substation equipment monitoring and warning terminal according to claim 1, it is characterized in that, described monitoring and warning terminal equipment adopts frame structure, and described processor, communication module, alarm module, display module, smart machine data acquisition circuit, telemetered signal Acquisition Circuit, remote signals Acquisition Circuit, remote control circuit are connected by Europlug with power module and are connected with circuit board.
3. a kind of substation equipment monitoring and warning terminal according to claim 1, it is characterized in that, described communication network comprises wired communication network and/or wireless communication networks, described wire communication network comprises Networks of Fiber Communications and special telephone line network, and described wireless communication networks comprises 3G cordless communication network, Zigbee wireless network and public network GPRS communication network.
4. a kind of intelligent substation safety monitoring according to claim 1 and early warning system, it is characterized in that, described equipment running status monitoring device and equipment operating environment monitoring device are connected with the monitoring and warning terminal equipment by MBUS bus, RS485 bus or tcp/ip communication network respectively.
5. a kind of intelligent substation safety monitoring according to claim 1 and early warning system, it is characterized in that, described equipment running status monitoring device comprises one or more in Temperature Humidity Sensor, local discharge detection device, little water sensor, electric quantity monitoring instrument and SF6 toxic gas detection device.
6. a kind of intelligent substation safety monitoring according to claim 1 and early warning system, it is characterized in that, described equipment operating environment monitoring device comprises one or more in Temperature Humidity Sensor, sense smoke sensor, water sensor, serial ports camera, naked light transducer, monitoring poisonous gas device and thermal infrared imager.
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| CN2013100098490A CN103108034A (en) | 2013-01-11 | 2013-01-11 | Substation equipment monitoring and early warning terminal |
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| CN2013100098490A CN103108034A (en) | 2013-01-11 | 2013-01-11 | Substation equipment monitoring and early warning terminal |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713241A (en) * | 2013-12-13 | 2014-04-09 | 胡岳 | Partial discharge monitoring system and method based on M-BUS |
| CN104158293A (en) * | 2014-08-27 | 2014-11-19 | 国家电网公司 | Intelligent substation debugging system |
| CN105093018A (en) * | 2015-08-05 | 2015-11-25 | 国网浙江省电力公司湖州供电公司 | Air visualization monitoring platform applied to electric power system |
| CN105891763A (en) * | 2015-01-26 | 2016-08-24 | 国家电网公司 | Power meter operation fault intelligent processing system and a method thereof |
| CN105939063A (en) * | 2016-07-06 | 2016-09-14 | 河北箱变电器有限公司 | Data transmission system for power equipment |
| CN106026402A (en) * | 2016-07-06 | 2016-10-12 | 河北箱变电器有限公司 | Power device fault solution scheme system |
| CN106571689A (en) * | 2016-11-23 | 2017-04-19 | 国网福建省电力有限公司 | Online monitoring system for diagnosing substation telemetering fault based on multi-data source comparison technology |
| CN106941278A (en) * | 2016-09-28 | 2017-07-11 | 常州市善松信息科技有限公司 | A kind of substation equipment monitoring and warning terminal |
| CN107481462A (en) * | 2017-07-17 | 2017-12-15 | 国网江苏省电力公司南通供电公司 | The anti-toy alarm device of cable duct |
| CN107785999A (en) * | 2017-09-28 | 2018-03-09 | 佛山科学技术学院 | A kind of 10KV intelligent monitor systems based on GPRS radio communications |
| CN108303921A (en) * | 2018-01-29 | 2018-07-20 | 中国南方电网有限责任公司超高压输电公司南宁局 | A kind of power cable ditch tracked remote-control mobile monitoring device |
| CN108572571A (en) * | 2017-03-09 | 2018-09-25 | 上海泓璟自控科技有限公司 | Industrial control system |
| CN109472962A (en) * | 2018-12-19 | 2019-03-15 | 上海金盾消防智能科技有限公司 | A kind of cable duct fire monitoring module on the spot |
| CN110417122A (en) * | 2019-07-26 | 2019-11-05 | 国网江苏省电力有限公司灌南县供电分公司 | A kind of transformer substation intelligent monitoring system based on smart phone |
| CN111884341A (en) * | 2020-07-31 | 2020-11-03 | 国网山东省电力公司寿光市供电公司 | Feeder terminal running state monitoring device |
| CN112344909A (en) * | 2020-11-06 | 2021-02-09 | 国核信息科技有限公司 | Method and device for monitoring inclination of fan tower |
| CN113781732A (en) * | 2021-07-23 | 2021-12-10 | 广东电网有限责任公司广州供电局 | Cable channel fire early warning method and device based on intelligent gateway |
| CN117791867A (en) * | 2023-12-28 | 2024-03-29 | 海威众达(北京)科技有限公司 | Comprehensive monitoring and early warning system for multi-state potential safety hazards of equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638328U (en) * | 2010-03-10 | 2010-11-17 | 深圳市新桥网络技术有限公司 | Early-warning monitoring system of outdoor electric power facility |
| CN102184622A (en) * | 2011-01-24 | 2011-09-14 | 武汉奋进电力技术有限公司 | System for monitoring grounding wire state in substation |
| CN202206189U (en) * | 2011-09-13 | 2012-04-25 | 珠海赛迪生电气设备有限公司 | Comprehensive monitoring and intelligent management device for electric power high-voltage equipment |
| CN202268743U (en) * | 2011-09-26 | 2012-06-06 | 陕西宏洋电子科技有限公司 | Wireless temperature monitoring system for traction substation |
| CN203119947U (en) * | 2013-01-11 | 2013-08-07 | 国核信息科技有限公司 | Transformer station equipment monitoring early warning terminal |
-
2013
- 2013-01-11 CN CN2013100098490A patent/CN103108034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638328U (en) * | 2010-03-10 | 2010-11-17 | 深圳市新桥网络技术有限公司 | Early-warning monitoring system of outdoor electric power facility |
| CN102184622A (en) * | 2011-01-24 | 2011-09-14 | 武汉奋进电力技术有限公司 | System for monitoring grounding wire state in substation |
| CN202206189U (en) * | 2011-09-13 | 2012-04-25 | 珠海赛迪生电气设备有限公司 | Comprehensive monitoring and intelligent management device for electric power high-voltage equipment |
| CN202268743U (en) * | 2011-09-26 | 2012-06-06 | 陕西宏洋电子科技有限公司 | Wireless temperature monitoring system for traction substation |
| CN203119947U (en) * | 2013-01-11 | 2013-08-07 | 国核信息科技有限公司 | Transformer station equipment monitoring early warning terminal |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713241A (en) * | 2013-12-13 | 2014-04-09 | 胡岳 | Partial discharge monitoring system and method based on M-BUS |
| CN103713241B (en) * | 2013-12-13 | 2019-04-05 | 胡岳 | Partial discharge monitoring System and method for based on M-BUS |
| CN104158293A (en) * | 2014-08-27 | 2014-11-19 | 国家电网公司 | Intelligent substation debugging system |
| CN105891763A (en) * | 2015-01-26 | 2016-08-24 | 国家电网公司 | Power meter operation fault intelligent processing system and a method thereof |
| CN105093018A (en) * | 2015-08-05 | 2015-11-25 | 国网浙江省电力公司湖州供电公司 | Air visualization monitoring platform applied to electric power system |
| CN105939063A (en) * | 2016-07-06 | 2016-09-14 | 河北箱变电器有限公司 | Data transmission system for power equipment |
| CN106026402A (en) * | 2016-07-06 | 2016-10-12 | 河北箱变电器有限公司 | Power device fault solution scheme system |
| CN106941278A (en) * | 2016-09-28 | 2017-07-11 | 常州市善松信息科技有限公司 | A kind of substation equipment monitoring and warning terminal |
| CN106571689A (en) * | 2016-11-23 | 2017-04-19 | 国网福建省电力有限公司 | Online monitoring system for diagnosing substation telemetering fault based on multi-data source comparison technology |
| CN106571689B (en) * | 2016-11-23 | 2024-02-02 | 国网福建省电力有限公司 | Multi-data-source comparison technology diagnosis substation telemetry fault online monitoring system |
| CN108572571A (en) * | 2017-03-09 | 2018-09-25 | 上海泓璟自控科技有限公司 | Industrial control system |
| CN107481462A (en) * | 2017-07-17 | 2017-12-15 | 国网江苏省电力公司南通供电公司 | The anti-toy alarm device of cable duct |
| CN107785999A (en) * | 2017-09-28 | 2018-03-09 | 佛山科学技术学院 | A kind of 10KV intelligent monitor systems based on GPRS radio communications |
| CN108303921A (en) * | 2018-01-29 | 2018-07-20 | 中国南方电网有限责任公司超高压输电公司南宁局 | A kind of power cable ditch tracked remote-control mobile monitoring device |
| CN109472962A (en) * | 2018-12-19 | 2019-03-15 | 上海金盾消防智能科技有限公司 | A kind of cable duct fire monitoring module on the spot |
| CN110417122A (en) * | 2019-07-26 | 2019-11-05 | 国网江苏省电力有限公司灌南县供电分公司 | A kind of transformer substation intelligent monitoring system based on smart phone |
| CN111884341A (en) * | 2020-07-31 | 2020-11-03 | 国网山东省电力公司寿光市供电公司 | Feeder terminal running state monitoring device |
| CN111884341B (en) * | 2020-07-31 | 2023-04-21 | 国网山东省电力公司寿光市供电公司 | Feeder terminal running state monitoring device |
| CN112344909A (en) * | 2020-11-06 | 2021-02-09 | 国核信息科技有限公司 | Method and device for monitoring inclination of fan tower |
| CN113781732A (en) * | 2021-07-23 | 2021-12-10 | 广东电网有限责任公司广州供电局 | Cable channel fire early warning method and device based on intelligent gateway |
| CN117791867A (en) * | 2023-12-28 | 2024-03-29 | 海威众达(北京)科技有限公司 | Comprehensive monitoring and early warning system for multi-state potential safety hazards of equipment |
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Application publication date: 20130515 |