CN101915889B - Conductor sag on-line monitoring system - Google Patents
Conductor sag on-line monitoring system Download PDFInfo
- Publication number
- CN101915889B CN101915889B CN2010102496910A CN201010249691A CN101915889B CN 101915889 B CN101915889 B CN 101915889B CN 2010102496910 A CN2010102496910 A CN 2010102496910A CN 201010249691 A CN201010249691 A CN 201010249691A CN 101915889 B CN101915889 B CN 101915889B
- Authority
- CN
- China
- Prior art keywords
- wire
- information
- current
- lead
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 62
- 239000004020 conductor Substances 0.000 title abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000010365 information processing Effects 0.000 claims description 14
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 239000012080 ambient air Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 3
- 239000003570 air Substances 0.000 claims description 2
- 230000005674 electromagnetic induction Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract 5
- 230000001131 transforming effect Effects 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a conductor slag on-line monitoring system comprising a signal collecting device, a monitoring host computer, a power supply device, an information transmitting device and a monitoring center, wherein the signal collecting device is used for collecting the temperature as well as the inclination angle and the current of a conductor; the monitoring host computer is used for pretreating the collected information to acquire the distance between the lowest point of a conductor slag and the ground and packing the distance between the lowest point of the conductor slag and the ground and the collected information; the power supply device is used for supplying power, transforming voltage and starting or stopping the monitoring host computer; the information transmitting device is used for transforming the packed information to the monitoring center; and the monitoring center is used for presetting warning values, establishing an early warning mechanism, configuring the packed information to different local area networks, and forecasting the variation trend of the conductor slag and the transmission capacity of a transmission line in real time. The conductor slag on-line monitoring system has the characteristics of strong real-time performance, high safety, reliable forecasting and the like and can be widely applied to electric systems.
Description
Technical Field
The invention relates to a monitoring technology, in particular to a wire sag online monitoring system.
Background
It is known that in practical applications, the temperature of the wire is increased by passing current through the wire, but the temperature increase of the wire can cause the wire to be oxidized at the joint and even the joint to be blown; the increased wire temperature also causes increased wire sag, which can cause the wire to discharge due to insufficient crossover span. In recent years, due to the increasing demand of electric loads, the maximum operation allowable temperature of a wire of many existing power transmission lines is increased from 70 ℃ to 80 ℃ in order to improve the transmission capacity, and then the line sag becomes a main limiting factor. In addition to the variation in line operating loads causing the conductor sag to vary, ambient weather conditions also affect the variation in conductor sag.
Therefore, the over-large sag of the wire can not only cause accident potential, but also limit the transmission capacity of the transmission line. In order to ensure the safe operation of the transmission line and the spanned equipment, the sag needs to be verified or monitored in real time.
Disclosure of Invention
In view of this, the main object of the present invention is to provide an online monitoring system for sag of conducting wire, which has strong real-time performance, high safety and reliable prediction.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention provides a lead sag online monitoring system, which comprises a signal acquisition device, a monitoring host, a power supply device, an information transmission device and a monitoring center, wherein the signal acquisition device is connected with the monitoring host; wherein,
the collecting device is used for sending the collected wire current of the power transmission line, the wire temperature, the ambient air temperature around the wire and the included angle between the wire and the horizontal plane to the monitoring host;
the monitoring host is used for preprocessing the current of the wire sent by the acquisition device, and acquiring the distance between the lowest point of the arc sag of the wire and the ground according to the distance between the tower poles, the distance between the fixed point of the wire on the tower poles and the ground and the included angle between the wire sent by the acquisition device and the horizontal plane; acquiring the temperature rise of the lead according to the temperature of the lead and the ambient temperature of the lead sent by the acquisition device, and establishing a corresponding relation between the current of the lead and the temperature rise of the lead; packaging the distance from the lowest point of the wire sag to the ground, the wire temperature, the ambient temperature around the wire, the corresponding relation between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane and the preprocessed wire current into packaged information, and then sending the packaged information to an information transmission device;
the power supply device is used for getting power from the power transmission line and performing voltage conversion on the voltage obtained by getting the power; sending an operation signal or a turn-off signal to a monitoring host according to the current in the power transmission line;
the information transmission device is used for transmitting the packed information sent by the monitoring host to the monitoring center in a wireless mode or a GPRS/CDMA mode;
the monitoring center is used for configuring the packaged information forwarded by the information transmission device to different local area networks; meanwhile, predicting the sag variation trend of the conducting wire and the transmission capacity of the power transmission line in real time according to the packaging information; and the method is also used for presetting an alarm value and establishing an early warning mechanism.
In conclusion, the wire sag online monitoring system can collect a field in real time, and determine whether to start circuit protection according to the collected wire current condition; the server predicts the change trend of the conductor sag according to the acquired real-time data, so that power grid dispatching and management personnel can dynamically adjust the thermal stability load of the power transmission line in real time, and the transmission capacity of the power transmission line is exerted to the maximum extent, so that the operation capacity of the power grid is improved, and the safety of an operation line and a crossed device is protected and ensured; in addition, the monitoring host is turned off under the condition that the current of the wire is suddenly changed, so that the safety of the wire sag online monitoring system is further ensured under the condition of emergency.
Drawings
FIG. 1 is a schematic structural diagram of a conductor sag online monitoring system according to the present invention;
FIG. 2 is a schematic structural diagram of a signal acquisition device of the conductor sag online monitoring system according to the present invention;
FIG. 3 is a schematic structural diagram of a monitoring host of the online monitoring system for sag of conducting wire of the present invention;
FIG. 4 is a schematic structural diagram of a power supply device of the wire sag online monitoring system according to the present invention;
FIG. 5 is a schematic structural diagram of an information transmission device of the on-line monitoring system for sag of conducting wire according to the present invention;
fig. 6 is a schematic structural diagram of a monitoring center of the wire sag online monitoring system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the wire sag online monitoring system of the present invention includes a signal acquisition device 1, a monitoring host 2, a power supply device 3, an information transmission device 4 and a monitoring center 5; wherein,
and the acquisition device 1 is used for transmitting the acquired wire current of the power transmission line, the wire temperature, the ambient air temperature of the wire and the included angle between the wire and the horizontal plane to the monitoring host 2.
The monitoring host 2 is used for preprocessing the current of the wire sent by the acquisition device 1, and acquiring the distance between the lowest point of the arc sag of the wire and the ground according to the distance between the tower poles, the distance between the fixed point of the wire on the tower poles and the ground and the included angle between the wire sent by the acquisition device 1 and the horizontal plane; acquiring the temperature rise of the lead according to the temperature of the lead and the ambient temperature of the lead sent by the acquisition device 1, and establishing a corresponding relation between the current of the lead and the temperature rise of the lead; and the distance from the lowest point of the wire sag to the ground, the wire temperature, the ambient air temperature around the wire, the corresponding relation between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane and the preprocessed wire current are packaged into packaged information and then sent to the information transmission device 4.
In practical application, the monitoring host 2 is a 32-Bit microprocessor.
The temperature difference between the temperature of the wire and the ambient temperature around the wire is the temperature rise of the wire caused by the transmission of electric energy. The monitoring host 2 establishes a corresponding relation between the lead current and the lead temperature rise according to the lead temperature, the ambient air temperature around the lead and the lead current which are acquired by the acquisition device 1 for a long time.
The voltage grade of the electric energy transmitted by the power transmission line and the distance between the lowest point of the arc sag of the wire and the horizontal plane are specified in the power design specification, the voltage grade in actual operation cannot exceed the specified voltage grade, and the lowest point of the arc sag cannot exceed the specified lowest point of the arc sag of the wire.
The power supply device 3 is used for getting power from the power transmission line and performing voltage conversion on the voltage obtained by getting the power; and sending an operation signal or a turn-off signal to the monitoring host 2 according to the current in the power transmission line.
And the information transmission device 4 is used for forwarding the packaged information sent by the monitoring host 2 to the monitoring center 5 in a wireless mode or a GPRS/CDMA mode.
The monitoring center 5 is used for configuring the packaged information forwarded by the information transmission device 4 to different local area networks; meanwhile, predicting the sag variation trend of the conducting wire and the transmission capacity of the power transmission line in real time according to the packaging information; and the method is also used for presetting an alarm value and establishing an early warning mechanism.
In the invention, a collecting device collects the current of a lead of a power transmission line, the temperature of the lead, the ambient temperature around the lead and the included angle between the lead and the horizontal plane; under the protection control of the power supply device, the monitoring host acquires the calculation information such as the distance between the lowest point of the arc sag of the wire and the ground and the corresponding relation between the current of the wire and the temperature rise of the wire according to the acquired information and the self-stored information of the power transmission line, such as the distance between the tower poles, the distance between the fixed point of the wire on the tower pole and the ground and the like; the monitoring center predicts the sag variation trend of the conducting wire according to the collected information and the calculated information, analyzes the transmission capacity of the power transmission line, and is convenient for power grid dispatching and managers to dynamically adjust the thermal stability load of the power transmission line in real time.
As shown in fig. 2, the acquisition device 1 includes a current sensor 11, a biaxial inclination angle sensor 12, and a temperature sensor 13; wherein,
and the current sensor 11 is used for collecting the wire current in the power transmission line and sending the wire current to the monitoring host 2.
In the present invention, the signal of the wire current collected by the current sensor 11 is an analog signal.
And the double-shaft inclination angle sensor 12 is used for measuring an included angle between the wire and the horizontal plane and sending the included angle between the wire and the horizontal plane to the monitoring host 2.
In practical application, the included angle between the wire and the horizontal plane that biax inclination angle sensor 12 measured and obtained is the digital quantity, and biax inclination angle sensor 12 passes through the SPI serial ports and directly sends the included angle between wire and the horizontal plane to monitoring host computer 2.
And the temperature sensor 13 is used for measuring the temperature of the lead and the ambient temperature of the lead and sending the temperature of the lead and the ambient temperature of the lead to the monitoring host 2.
In practical application, the temperature of the wire measured by the temperature sensor 13 and the temperature of the atmosphere around the wire are both digital quantities.
As shown in fig. 3, the monitoring host 2 includes a filter circuit 21, an a/D conversion circuit 22, and an information processing unit 23; wherein,
and a filter circuit 21 for performing a filtering process on the wire current sent by the current sensor 11 and sending the processed wire current to the a/D conversion circuit 22.
The a/D conversion circuit 22 is configured to convert the lead current sent from the filter circuit 21 from an analog value to a digital value, and send the digital value to the information processing unit 23.
In the present invention, the a/D conversion circuit 22 is a 16-Bit a/D conversion circuit.
The information processing unit 23 is configured to obtain a distance from the lowest point of the wire sag to the ground according to the distance between the towers, a distance from a fixed point of the wire on the tower to the ground, and an included angle between the wire sent by the inclination angle sensor 12 and the horizontal plane; acquiring the temperature rise of the lead according to the temperature of the lead sent by the temperature sensor 13 and the ambient temperature of the lead, and establishing a corresponding relation between the current of the lead and the temperature rise of the lead; and the distance from the lowest point of the wire sag to the ground, the wire temperature, the ambient temperature around the wire, the corresponding relationship between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane, and the wire current sent by the a/D conversion circuit 22 are packaged and then sent to the information transmission device 4.
In practical application, the collecting device 1 further includes a microclimate station for collecting atmospheric information including atmospheric temperature, atmospheric pressure, air volume, wind speed, rainfall and rain speed, and sending the atmospheric information to the information processing unit 23. The information processing unit 23 is further configured to pack the atmospheric information sent by the microclimate station, the distance from the lowest point of the wire sag to the ground, the wire temperature, the atmospheric temperature around the wire, the corresponding relationship between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane, and the wire current sent by the a/D conversion circuit 22 into packed information; that is, the package information also includes atmospheric information.
As shown in fig. 4, the power supply device 3 includes a power-taking module 31 and a voltage conversion and circuit protection module 32; wherein,
and the power taking module 31 is configured to take power from the power transmission line in an electromagnetic induction manner, and send the obtained voltage signal and current signal to the voltage conversion and circuit protection module 32.
The voltage conversion and circuit protection module 32 is configured to convert a voltage signal sent by the power taking module 31 from a high voltage to a 5V dc voltage with a constant output power; and is configured to send an operation signal or a shutdown signal to the monitoring host 2 according to the current signal sent by the power taking module 31.
In practical application, according to a current signal sent by the power taking module 31, circuit protection is started when the current is suddenly increased, the resistor controlled by the silicon controlled rectifier absorbs the surplus electric energy, and meanwhile, a turn-off signal is sent to the monitoring host 2; when the current does not increase suddenly, an operation signal is sent to the monitoring main machine 2.
As shown in fig. 5, the information transmission device 4 includes a radio frequency circuit 41, a GPRS/CDMA module 42; wherein,
and the radio frequency circuit 41 is used for forwarding the packaged information sent by the information processing unit 23 to the monitoring center 5 in a wireless mode.
And a GPRS/CDMA module 42, configured to forward the packet information sent by the information processing unit 23 to the monitoring center 5 in a GPRS/CDMA manner.
As shown in fig. 6, the monitoring center 5 includes a switch 51 and a server 52; wherein,
and a switch 51 for configuring the packaged information forwarded by the information transmission apparatus 4 to a server 52 in a different local area network.
In practical application, the package information includes distances from the lowest point of the wire sag to the ground, wire temperatures, ambient air temperatures around the wires, corresponding relations between wire currents and wire temperature rises, included angles between the wires and the horizontal plane, and preprocessed wire currents of different regions or different units to which the package information belongs, and the exchange 51 configures the package information into a corresponding server 52 in a corresponding local area network according to the different regions or different units to which the package information belongs.
In practical application, the switch has two types, namely an internal switch and an external switch, the internal switch is installed in the server, and the external switch is communicated with the server through a serial port.
The server 52 is used for presetting an alarm value and establishing an early warning mechanism; and predicting the change trend of the conductor sag and the transmission capacity of the transmission line in real time according to the packaged information distributed by the exchanger 51.
In practical application, the server 52 may also look up the history of the distance from the lowest point of the wire sag to the ground, the wire temperature, the ambient temperature around the wire, the correspondence between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane, the preprocessed wire current, and the like.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A wire sag online monitoring system is characterized by comprising a signal acquisition device, a monitoring host, a power supply device, an information transmission device and a monitoring center; wherein,
the collecting device is used for sending the collected wire current of the power transmission line, the wire temperature, the ambient air temperature around the wire and the included angle between the wire and the horizontal plane to the monitoring host;
the monitoring host is used for preprocessing the current of the wire sent by the acquisition device, and acquiring the distance between the lowest point of the arc sag of the wire and the ground according to the distance between the tower poles, the distance between the fixed point of the wire on the tower poles and the ground and the included angle between the wire sent by the acquisition device and the horizontal plane; acquiring the temperature rise of the lead according to the temperature of the lead and the ambient temperature of the lead sent by the acquisition device, and establishing a corresponding relation between the current of the lead and the temperature rise of the lead; packaging the distance from the lowest point of the wire sag to the ground, the wire temperature, the ambient temperature around the wire, the corresponding relation between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane and the preprocessed wire current into packaged information, and then sending the packaged information to an information transmission device;
the power supply device is used for getting power from the power transmission line and performing voltage conversion on the voltage obtained by getting the power; sending an operation signal or a turn-off signal to a monitoring host according to the current in the power transmission line;
the information transmission device is used for transmitting the packed information sent by the monitoring host to the monitoring center in a wireless mode or a GPRS/CDMA mode;
the monitoring center is used for configuring the packaged information forwarded by the information transmission device to different local area networks; meanwhile, predicting the sag variation trend of the conducting wire and the transmission capacity of the power transmission line in real time according to the packaging information; and the method is also used for presetting an alarm value and establishing an early warning mechanism.
2. The wire sag online monitoring system according to claim 1, wherein the collection device comprises a current sensor, a biaxial inclination angle sensor and a temperature sensor; wherein,
the current sensor is used for collecting the wire current of the power transmission line and sending the wire current to the monitoring host;
the double-shaft inclination angle sensor is used for measuring an included angle between the wire and the horizontal plane and sending the included angle between the wire and the horizontal plane to the monitoring host;
and the temperature sensor is used for measuring the temperature of the lead and the ambient temperature of the lead and sending the temperature of the lead and the ambient temperature of the lead to the monitoring host.
3. The wire sag on-line monitoring system according to claim 2, wherein the monitoring host comprises a filter circuit, an A/D conversion circuit and an information processing unit; wherein,
the filter circuit is used for filtering the wire current sent by the current sensor and sending the processed wire current to the A/D conversion circuit;
the A/D conversion circuit is used for converting the wire current sent by the filter circuit into digital quantity from analog quantity and then sending the digital quantity to the information processing unit;
the information processing unit is used for acquiring the distance between the lowest point of the arc sag of the wire and the ground according to the distance between the tower poles, the distance between the fixed point of the wire on the tower pole and the ground and the included angle between the wire and the horizontal plane, which are sent by the inclination angle sensor; acquiring the temperature rise of the lead according to the temperature of the lead sent by the temperature sensor and the ambient temperature of the lead, and establishing a corresponding relation between the current of the lead and the temperature rise of the lead; establishing a corresponding relation between the current of the lead and the temperature rise of the lead according to the distance between the lowest point of the arc sag of the lead and the ground; and packaging the distance from the lowest point of the wire sag to the ground, the wire temperature, the ambient temperature around the wire, the corresponding relation between the wire current and the wire temperature rise, the included angle between the wire and the horizontal plane and the wire current sent by the A/D conversion circuit, and then sending the packaged wire current to the information transmission device.
4. The wire sag on-line monitoring system according to claim 3, wherein the collecting device further comprises a microclimate station for collecting atmospheric information including atmospheric temperature, atmospheric pressure, air volume and wind speed, rainfall and rain speed, and sending the atmospheric information to the information processing unit; the packaged information packaged by the information processing unit further includes atmospheric information.
5. The wire sag online monitoring system according to claim 1, wherein the power supply device comprises a power taking module, a voltage conversion module and a protection circuit; wherein,
the power taking module is used for taking power from a power transmission line in an electromagnetic induction mode and sending a voltage signal and a current signal to the voltage conversion and circuit protection module;
the voltage conversion and circuit protection module is used for converting a voltage signal sent by the power taking module from high voltage into 5V direct current voltage with constant output power; and the monitoring host is used for sending an operation signal or a turn-off signal to the monitoring host according to the current signal sent by the power taking module.
6. The system for on-line monitoring of the sag of the wire according to claim 3, wherein the information transmission device comprises a wireless radio frequency circuit and a GPRS/CDMA module; wherein,
the wireless radio frequency circuit is used for forwarding the packaged information sent by the information processing unit to the monitoring center in a wireless mode;
and the GPRS/CDMA module is used for forwarding the packaged information sent by the information processing unit to the monitoring center in a GPRS/CDMA mode.
7. The wire sag online monitoring system according to claim 3 or 4, wherein the monitoring center comprises a switch and a server; wherein,
the exchanger is used for configuring the packaged information forwarded by the information transmission device to servers in different local area networks;
the server is used for presetting an alarm value and establishing an early warning mechanism; and predicting the sag variation trend of the conducting wire and the transmission capacity of the transmission line in real time according to the packaging information distributed by the exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102496910A CN101915889B (en) | 2010-08-10 | 2010-08-10 | Conductor sag on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102496910A CN101915889B (en) | 2010-08-10 | 2010-08-10 | Conductor sag on-line monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101915889A CN101915889A (en) | 2010-12-15 |
| CN101915889B true CN101915889B (en) | 2012-11-14 |
Family
ID=43323450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102496910A Active CN101915889B (en) | 2010-08-10 | 2010-08-10 | Conductor sag on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101915889B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292659B (en) * | 2013-05-02 | 2016-06-15 | 西安工程大学 | Arc sag of wire of power transmission line measuring method based on angular transducer |
| CN103810077A (en) * | 2013-08-24 | 2014-05-21 | 国家电网公司 | Integrated intelligent monitoring system for leads |
| CN103995209A (en) * | 2014-04-04 | 2014-08-20 | 国家电网公司 | Detection method for adhesion state of 220kV bundled conductor |
| CN104006793A (en) * | 2014-06-17 | 2014-08-27 | 国家电网公司 | Sag real-time monitoring device |
| CN104318118B (en) * | 2014-10-31 | 2017-06-20 | 国家电网公司 | Aerial condutor sag real-time computing technique under a kind of hot weather |
| CN105974423A (en) * | 2016-04-27 | 2016-09-28 | 中国科学技术大学先进技术研究院 | Power transmission line sag measurement method based on ultrasonic distance measuring and system thereof |
| CN108195329A (en) * | 2017-12-25 | 2018-06-22 | 安徽博达通信工程监理有限责任公司 | A kind of detection communication system of cable arc sag height |
| CN110260911A (en) * | 2018-03-12 | 2019-09-20 | 中国电力科学研究院有限公司 | A kind of large-section lead arc sag on-line monitoring system |
| CN110307825B (en) * | 2019-08-06 | 2024-07-05 | 李立学 | Overhead transmission line sag on-line monitoring system |
| CN112508453A (en) * | 2020-12-22 | 2021-03-16 | 安徽康能电气有限公司 | Smart line multi-element sensing method and system based on national net core |
| CN118168613B (en) * | 2024-05-16 | 2024-07-19 | 国网辽宁省电力有限公司抚顺供电公司 | Power transmission line disaster state monitoring system and method based on deep learning |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038186A (en) * | 2006-06-10 | 2007-09-19 | 伊仁图太 | Device for online warning freezing and swing of transmission line |
| CN101586971A (en) * | 2009-06-19 | 2009-11-25 | 国网电力科学研究院武汉南瑞有限责任公司 | Transmission line ice-coating pre-warning and dynamic compatibilization system on-line monitoring device |
| CN101603850A (en) * | 2009-06-29 | 2009-12-16 | 中国电力工程顾问集团中南电力设计院 | A kind of extra high voltage transmission line online monitoring system |
| CN201819698U (en) * | 2010-07-26 | 2011-05-04 | 吕强 | System for monitoring icing state of overhead cables |
-
2010
- 2010-08-10 CN CN2010102496910A patent/CN101915889B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101915889A (en) | 2010-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101915889B (en) | Conductor sag on-line monitoring system | |
| CN103852694A (en) | Power cable intelligent grounding box | |
| CN202602375U (en) | Wind power generation box type transformer cloud terminal | |
| CN202814349U (en) | System for on-line monitoring of sag of overhead transmission line | |
| CN105587463A (en) | Remote monitoring method of wind power generation | |
| CN101915596A (en) | Method and system for monitoring ice coating state of overhead cable | |
| CN201819698U (en) | System for monitoring icing state of overhead cables | |
| CN108508328A (en) | A kind of transmission line lightning stroke intelligent fault monitor supervision platform | |
| CN105444903A (en) | Electric power device wireless temperature measurement system | |
| CN103852690A (en) | On-line monitoring system for electric power transmission line | |
| CN103336221A (en) | Power cable fault detection system | |
| CN105698959A (en) | Dry-type air-core reactor overheating fault early warning system based on TVOC and temperature test | |
| CN104135084A (en) | System and method for supplying power to transmission tower, and methods for transmitting and receiving data | |
| CN205539320U (en) | Cable termination arcing ground monitoring devices | |
| CN202794300U (en) | Online monitoring device of power transmission line lightening arrester | |
| CN104977507A (en) | Lightning fault positioning detection apparatus | |
| CN104684110A (en) | Sensor and emergent communication network in power transmission system | |
| CN107727968A (en) | A kind of dry-type transformer condition monitoring device | |
| CN201517950U (en) | Temperature wireless monitoring system of high voltage device of transformer station | |
| CN113514143A (en) | GIL cable tunnel online monitoring system and method | |
| CN201828631U (en) | On-line monitoring system for lead sag | |
| CN210835050U (en) | Cable duct bank on-line monitoring system | |
| CN217466005U (en) | Temperature detection device, temperature monitoring system and temperature monitoring structure for communication wire | |
| CN204408639U (en) | Transducer in electrical power transmission system and Emergency Communications Network | |
| CN201497588U (en) | Wire temperature measurement device for transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING SHUIMU YUANHUA ELECTRIC CO., LTD. Free format text: FORMER OWNER: LV QIANG Effective date: 20120615 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 HAIDIAN, BEIJING TO: 100094 HAIDIAN, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20120615 Address after: 100094, Beijing, Yongfeng Haidian District industrial base, No. 5, Yongfeng Road, No. 1, Lou Yongfeng science and technology enterprise acceleration zone (zone two), Room 301 Applicant after: BEIJING SHUIMU YUANHUA ELECTRIC Co.,Ltd. Address before: 100083 Beijing City, Yongfeng industrial base, Yongfeng Road, No. 5, No. 1, Lou Yongfeng science and technology enterprises to speed up the district (district two) Room 301 Applicant before: Lv Qiang |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING SEMEUREKA ELECTRIC CO., LTD. Free format text: FORMER NAME: BEIJING SHUIMU YUANHUA ELECTRIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100094 No. 1, building 5, Yongfeng Road, Haidian District, Beijing, 301 Patentee after: BEIJING SEMEUREKA ELECTRICS Co.,Ltd. Address before: 100094, Beijing, Yongfeng Haidian District industrial base, No. 5, Yongfeng Road, No. 1, Lou Yongfeng science and technology enterprise acceleration zone (zone two), Room 301 Patentee before: BEIJING SHUIMU YUANHUA ELECTRIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301 Patentee after: SHUIMU YUANHUA ELECTRIC Co.,Ltd. Address before: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301 Patentee before: BEIJING SHUIMU YUANHUA ELECTRIC Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100083 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301 Patentee after: BEIJING SHUIMU YUANHUA ELECTRIC Co.,Ltd. Address before: 100094 Building No. 1, No. 5, Yongfeng Road, Haidian District, Beijing 301 Patentee before: BEIJING SEMEUREKA ELECTRICS Co.,Ltd. |