CN111123038A - Global cable temperature monitoring and alarming system and working method thereof - Google Patents
Global cable temperature monitoring and alarming system and working method thereof Download PDFInfo
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- CN111123038A CN111123038A CN201911403262.1A CN201911403262A CN111123038A CN 111123038 A CN111123038 A CN 111123038A CN 201911403262 A CN201911403262 A CN 201911403262A CN 111123038 A CN111123038 A CN 111123038A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2215/00—Details concerning sensor power supply
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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
- 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
本发明公开了一种全局电缆温度监测报警系统及其工作方法，涉及中压配电网故障监测领域。中压配电网的开闭所和环网柜内部支路数众多，任意支路的连接头接触不良都有可能导致火灾事件的发生。本系统包括电缆测温采集单元1、电缆测温汇集单元2、温度超限告警单元3、二遥DTU终端装置4和主站系统5。通过设于每条电缆支路6上的电缆测温采集单元1可全面实时监测电缆每条电缆支路6的表面温度，并通过电缆测温汇集单元2汇集后传递给温度超限告警单元3，经温度超限告警单元3分析后把超限告警通过二遥DTU终端装置4发送给主站系统5，主站系统5实现告警位置查询和告警事件的通知，并显示在监控管理设备上，以实现对开闭所和环网柜各电缆支路6的电缆温度实时监测和报警。
The invention discloses a global cable temperature monitoring and alarm system and a working method thereof, and relates to the field of medium-voltage distribution network fault monitoring. There are many branches in the switch station of the medium voltage distribution network and in the ring network cabinet, and the poor contact of the connectors of any branch may lead to the occurrence of fire incidents. The system includes a cable temperature measurement collection unit 1 , a cable temperature measurement collection unit 2 , a temperature overrun alarm unit 3 , a two-remote DTU terminal device 4 and a master station system 5 . The surface temperature of each cable branch 6 of the cable can be monitored comprehensively and in real time through the cable temperature measurement and acquisition unit 1 arranged on each cable branch 6, and collected through the cable temperature measurement collection unit 2 and then transmitted to the temperature overrun alarm unit 3 , after analysis by the temperature overrun alarm unit 3, the overrun alarm is sent to the master station system 5 through the two remote DTU terminal device 4, and the master station system 5 realizes the alarm location query and the notification of the alarm event, and displays it on the monitoring and management equipment, In order to realize the real-time monitoring and alarm of the cable temperature of each cable branch 6 of the switch station and the ring network cabinet.
Description
Technical Field
The invention relates to the field of medium-voltage distribution network fault monitoring, in particular to a global cable temperature monitoring and alarming system and a working method thereof.
Background
At present, the coverage range of a medium-voltage distribution network in China is wide, fire accidents caused by power grid faults occur sometimes, and a switching station and a ring main unit are important nodes for detecting the faults of the distribution network. The two branches are numerous, and poor contact of the connector of any branch can cause a fire accident. Therefore, preventing and precluding the occurrence of such events requires real-time monitoring of the cable temperature near each branch connector. The cable power-taking technology and the low-power consumption wireless transmission technology are the technical difficulties of the fault detection.
Disclosure of Invention
The technical problem to be solved and the technical task provided by the invention are to perfect and improve the prior technical scheme, and provide a global cable temperature monitoring and alarming system and a working method thereof, so as to effectively realize the real-time monitoring and alarming of the cable temperature of each cable branch of a switching station and a ring main unit. Therefore, the invention adopts the following technical scheme.
The utility model provides a global cable temperature monitoring alarm system, collects unit, temperature transfinite alarm unit, two distant DTU terminating set and main website system including cable temperature measurement collection unit, cable temperature measurement collection unit locate every cable branch road in order to measure the surface temperature of every cable branch road, cable temperature measurement collection unit and cable temperature measurement collect the unit and pass through wireless connection, cable temperature measurement collect the unit and be connected with temperature transfinite alarm unit, temperature transfinite alarm unit be connected with two distant DTU terminating set, two distant DTU terminating set and main website headtotail. Through locating the cable temperature measurement acquisition unit on every cable branch road, can comprehensive real-time supervision cable surface temperature of every cable branch road to collect the back through cable temperature measurement and transmit for the temperature transfinite alarm unit, report an emergency and ask for help or increased vigilance the transfinite after the temperature transfinite alarm unit analysis and send the main website system to two distant DTU terminal devices, in order to realize the cable temperature real-time supervision and the warning to each cable branch road of switching station and looped netowrk cabinet.
As a preferable technical means: the cable temperature measurement collection unit and the temperature overrun alarm unit are arranged in the two-remote DTU terminal device. Through the integral type setting, can effectively reduce device quantity, reduce installation activity duration, it is fixed to facilitate the installation.
As a preferable technical means: the two-remote DTU terminal device is provided with a wall hanging hole, and the wall hanging is carried out in an opening and closing station or a ring main unit. Can be conveniently hung in an opening and closing station or a ring main unit.
As a preferable technical means: the cable temperature acquisition unit is arranged at a position near a cable connector of each cable branch. Because of the structure reason, the temperature of cable joint head position will be higher than other places, through monitoring this position, can effectively guarantee to monitor the highest temperature, promotes the security.
As a preferable technical means: the master station system is connected to the monitoring management equipment. The overrun warning information can be transmitted to the monitoring management equipment to be displayed, so that the overrun warning information can be displayed in real time, and monitoring is facilitated.
A working method of a global cable temperature monitoring alarm system comprises the following steps:
1) when current passes through a circuit, the cable temperature acquisition unit acquires weak electric energy through electromagnetic induction and detects the temperature of the surface of the cable in real time;
2) the cable temperature acquisition unit transmits the detected cable temperature data and the detected electric energy data to the temperature data collection unit;
3) the temperature data collection unit transmits all the cable temperature data and the electric energy data to the temperature overrun warning unit;
4) the temperature overrun warning unit analyzes the relationship between the temperature of each line and the current line load;
5) judging the temperature rise condition of the line load;
6) when the line load is not heavy and the temperature rises quickly, judging that the cable joint has a fault, and immediately generating an early warning event notice to transmit the early warning event notice to the two-remote DTU terminal device;
7) when the line load is heavier but still in the normal working range and the temperature rise is still in the safety interval, judging that the line load is overweight, generating an early warning event notice and transmitting the early warning event notice to a two-remote DTU terminal device;
8) the two-remote DTU terminal device sends the event notice of the temperature overrun alarm unit to the master station system in time after receiving the event notice;
9) and the main station system inquires out the specific position where the cable temperature measurement acquisition unit where the early warning event is located is installed according to the terminal number of the received early warning event.
The temperature overrun warning unit processes the temperatures of all cables acquired by the collecting unit, judges whether the cables run under normal working conditions according to the temperature change rule, and immediately generates an early warning event to be uploaded to the main station system if the cables are judged to be in an abnormal state and have the risk of causing a fire, and the main station system inquires out the warning position.
As a preferable technical means: in the step 2), the temperature data collection unit actively calls and tests the cable temperature data and the electric energy data of each acquisition unit in turn at regular time intervals, and the cable temperature acquisition unit has a micropower wireless communication function and can respond to a temperature calling instruction initiated by the collection unit. Data collection of all cable temperature acquisition units is effectively realized.
As a preferable technical means: and 5) judging the temperature rise condition of the line load, and judging that the line runs normally and no event occurs when the line load is normal and the temperature rise is limited. The normal state is effectively filtered out.
As a preferable technical means: and 9), after receiving the early warning event, the master station system transmits and displays the early warning event information on the measurement and control terminal equipment. Early warning event information is timely displayed on the measurement and control terminal equipment in real time, and workers can conveniently and comprehensively know the early warning condition.
As a preferable technical means: and 9), after receiving the early warning event, the master station system simultaneously sends the early warning event information to the on-duty personnel in a short message mode. The on-duty personnel can conveniently know the information of the early warning event through short messages at any place.
Has the advantages that: the surface temperature of each cable branch of the cable can be comprehensively monitored in real time through the cable temperature measurement acquisition unit arranged on each cable branch; the cable branch surface temperatures detected by all the cable temperature measurement acquisition units can be effectively collected through the cable temperature measurement collection unit; the temperature overrun warning unit can judge whether the cable runs under a normal working condition according to a temperature change rule, and if the cable is judged to be in an abnormal state and has a risk of causing a fire, an early warning event is immediately generated; the two-remote DTU terminal can send the early warning event to the main station system, the main station system can conveniently inquire the specific position of the early warning event, timely display the early warning event in the measurement and control terminal equipment, and simultaneously send short messages to the on-duty personnel to inform the on-duty personnel, so that the on-duty personnel can effectively deal with the early warning event, and the real-time monitoring and alarming of the cable temperature of each cable branch of the switching station and the ring main unit are effectively realized.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
FIG. 2 is a flow chart of the working method of the present invention.
In the figure: 1-cable temperature measurement acquisition unit; 2-cable temperature measurement collection unit; 3-temperature overrun alarm unit; 4-two remote DTU terminal device; 5-a master station system; 6-cable branch.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in figure 1, a global cable temperature monitoring alarm system, including cable temperature measurement collection unit 1, cable temperature measurement collects unit 2, temperature overrun alarm unit 3, two distant DTU terminating set 4 and main website system 5, cable temperature measurement collection unit 1 locates near the cable connector position of every cable branch 6 in order to measure the surface temperature of every cable branch 6, cable temperature measurement collection unit 1 and cable temperature measurement collect unit 2 through wireless connection, cable temperature measurement collects unit 2 and temperature overrun alarm unit 3 and is connected, temperature overrun alarm unit 3 is connected with two distant DTU terminating set 4, two distant DTU terminating set 4 is connected with main website system 5, main website system 5 is connected to the control management equipment.
In order to reduce the installation time, the cable temperature measurement collection unit 2 and the temperature overrun alarm unit 3 are arranged in the two-remote DTU terminal device 4. Through the integral type setting, can effectively reduce device quantity, reduce installation activity duration, reduce cost, it is fixed to facilitate the installation.
In order to facilitate hanging installation, the two-remote DTU terminal device 4 is provided with a wall hanging hole, and the wall hanging is carried out in an opening and closing station or a ring main unit. Can be conveniently hung in an opening and closing station or a ring main unit.
As shown in fig. 2, a working method of a global cable temperature monitoring alarm system includes the following steps:
1) when current passes through a circuit, the cable temperature acquisition unit acquires weak electric energy through electromagnetic induction and detects the temperature of the surface of the cable in real time;
2) the cable temperature acquisition unit transmits the detected cable temperature data and the detected electric energy data to the temperature data collection unit;
3) the temperature data collecting unit transmits all the cable temperature data and the electric energy data to the temperature overrun warning unit 3;
4) the temperature overrun warning unit 3 analyzes the relationship between the temperature of each line and the current line load;
5) judging the temperature rise condition of the line load;
6) when the line load is not heavy and the temperature rises quickly, judging that the cable joint has a fault, immediately generating an early warning event notice and transmitting the early warning event notice to the two-remote DTU terminal device 4;
7) when the line load is heavier but still in the normal working range and the temperature rise is still in the safety interval, the line load is judged to be overweight, and an early warning event notice is generated and transmitted to the two-remote DTU terminal device 4;
8) the second remote DTU terminal device 4 receives the event notice of the temperature overrun alarm unit 3 and then sends the notice to the master station system 5 in time;
9) and the main station system 5 inquires out the specific position where the cable temperature measurement acquisition unit 1 of the early warning event is installed according to the terminal number of the early warning event.
In order to realize data collection of all cable temperature acquisition units, in step 2), the temperature data collection unit actively collects and measures cable temperature data and electric energy data of each acquisition unit in turn at regular time intervals, and the cable temperature acquisition unit has a micropower wireless communication function and can respond to a temperature collection instruction initiated by the collection unit. Data collection of all cable temperature acquisition units is effectively realized.
In order to filter out the normal state, in step 5), when the temperature rise condition of the line load is judged, if the line load is normal and the temperature rise is limited, the line is judged to be normal in operation, and no event is generated. The normal state is effectively filtered out.
In order to facilitate the staff to know the early warning situation comprehensively, in step 9), the master station system 5 transmits and displays the early warning event information on the measurement and control terminal equipment after receiving the early warning event. Early warning event information is timely displayed on the measurement and control terminal equipment in real time, and workers can conveniently and comprehensively know the early warning condition.
In order to facilitate the on-duty personnel to receive the early warning information in time, in the step 9), the main station system 5 receives the early warning event and simultaneously sends the early warning event information to the on-duty personnel in a short message mode. The on-duty personnel can conveniently know the information of the early warning event through short messages at any place.
Through locating cable temperature measurement acquisition unit 1 on every cable branch 6, can comprehensive real-time supervision cable surface temperature of every cable branch 6, and collect the back through cable temperature measurement and collect unit 2 and transmit for temperature overrun alarm unit 3, send the overrun warning to main website system 5 through two distant DTU terminal device 4 after the analysis of temperature overrun alarm unit 3, and inquire out the fault location through main website system 5, and send the real-time in time demonstration on the measurement and control terminal equipment simultaneously and send the short message to personnel on duty, can realize cable temperature real-time supervision and the warning to switching station and each cable branch 6 of looped netowrk cabinet comprehensively effectively.
The global cable temperature monitoring alarm system and the working method thereof shown in fig. 1-2 are specific embodiments of the present invention, have embodied the outstanding substantive features and significant progress of the present invention, and can be modified equivalently in shape, structure and the like according to the practical use requirements and under the teaching of the present invention, which are within the protection scope of the present solution.
Claims (10)
1. A global cable temperature monitoring alarm system is characterized in that: collect unit (2), temperature transfinite alarm unit (3), two distant DTU terminating set (4) and main website system (5) including cable temperature measurement collection unit (1), cable temperature measurement collection unit (1) locate on every cable branch road (6) with the surface temperature who measures every cable branch road (6), cable temperature measurement collection unit (1) and cable temperature measurement collect unit (2) and pass through wireless connection, cable temperature measurement collect unit (2) and temperature transfinite alarm unit (3) and be connected, temperature transfinite alarm unit (3) be connected with two distant DTU terminating set (4), two distant DTU terminating set (4) be connected with main website system (5).
2. The global cable temperature monitoring alarm system of claim 1, wherein: the cable temperature measurement collection unit (2) and the temperature overrun alarm unit (3) are arranged in the two-remote DTU terminal device (4).
3. The global cable temperature monitoring alarm system of claim 2, wherein: the two-remote DTU terminal device (4) is provided with a wall hanging hole, and the wall hanging is carried out in an opening and closing station or a ring main unit.
4. The global cable temperature monitoring alarm system of claim 3, wherein: the cable temperature acquisition unit is arranged at a position near a cable connector of each cable branch (6).
5. The global cable temperature monitoring alarm system of claim 1, wherein: the master station system (5) is connected to the monitoring management equipment.
6. The working method of the global cable temperature monitoring alarm system according to claim 1, comprising the steps of:
1) when current passes through a circuit, the cable temperature acquisition unit acquires weak electric energy through electromagnetic induction and detects the temperature of the surface of the cable in real time;
2) the cable temperature acquisition unit transmits the detected cable temperature data and the detected electric energy data to the temperature data collection unit;
3) the temperature data collection unit transmits all the cable temperature data and the electric energy data to the temperature overrun warning unit (3);
4) the temperature overrun warning unit (3) analyzes the relationship between the temperature of each line and the current line load;
5) judging the temperature rise condition of the line load;
6) when the line load is not heavy and the temperature rises quickly, the cable joint is judged to be in fault, and an early warning event notice is immediately generated and transmitted to a two-remote DTU terminal device (4);
7) when the line load is heavier but still in the normal working range and the temperature rise is still in a safety interval, the line load is judged to be overweight, and an early warning event notice is generated and transmitted to a two-remote DTU terminal device (4);
8) the two-remote DTU terminal device (4) timely sends the event notice of the temperature overrun alarm unit (3) to the master station system (5) after receiving the event notice;
9) and the main station system (5) inquires out the specific position where the cable temperature measurement acquisition unit (1) of the early warning event is installed according to the terminal number of the early warning event.
7. The working method of the global cable temperature monitoring alarm system according to claim 6, wherein: in the step 2), the temperature data collection unit actively calls and tests the cable temperature data and the electric energy data of each acquisition unit in turn at regular time intervals, and the cable temperature acquisition unit has a micropower wireless communication function and can respond to a temperature calling instruction initiated by the collection unit.
8. The working method of the global cable temperature monitoring alarm system according to claim 6, wherein: and 5) judging the temperature rise condition of the line load, and judging that the line runs normally and no event occurs when the line load is normal and the temperature rise is limited.
9. The working method of the global cable temperature monitoring alarm system according to claim 6, wherein: and 9), after receiving the early warning event, the master station system (5) transmits and displays the early warning event information on the measurement and control terminal equipment.
10. The working method of the global cable temperature monitoring alarm system according to claim 6, wherein: and 9), after receiving the early warning event, the master station system (5) simultaneously sends the early warning event information to the on-duty personnel in a short message mode.
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| CN201911403262.1A CN111123038A (en) | 2019-12-31 | 2019-12-31 | Global cable temperature monitoring and alarming system and working method thereof |
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Cited By (2)
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| CN111504507A (en) * | 2020-05-15 | 2020-08-07 | 辽宁东科电力有限公司 | Device and method for completing temperature rise test of multi-branch ring main unit by one-time wiring |
| CN113659568A (en) * | 2021-07-22 | 2021-11-16 | 余姚市宏宇输变电工程有限公司 | Method for generating over-limit and return notification short message |
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Application publication date: 20200508 |