CN203191496U - RS485 bus based distributed power grid operating equipment insulation online monitoring device - Google Patents
RS485 bus based distributed power grid operating equipment insulation online monitoring device Download PDFInfo
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- CN203191496U CN203191496U CN 201320198687 CN201320198687U CN203191496U CN 203191496 U CN203191496 U CN 203191496U CN 201320198687 CN201320198687 CN 201320198687 CN 201320198687 U CN201320198687 U CN 201320198687U CN 203191496 U CN203191496 U CN 203191496U
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Abstract
The utility model discloses an RS485 bus based distributed power grid operating equipment insulation online monitoring device, which comprises a main control unit, an RS485 communication interface, a signal collection unit, micro-current sensors, a sound-light alarm, a displayer and a keyboard, wherein the main control unit comprises a microcontroller and the RS485 communication interface; the signal collection unit comprises a plurality of data collectors, and each of the data collectors is connected to a micro-current sensor; the signal collection unit and the main control unit are connected through an RS485 bus; and the sound-light alarm, the displayer and the keyboard are all connected with the microcontroller. The RS485 bus based distributed power grid operating equipment insulation online monitoring device disclosed by the utility model has the advantages of ability of carrying out insulation monitoring on a plurality of electric power original members simultaneously without being influenced by the number of the monitored electric power original members, simple structure, low cost, reliable performance, ability of operating under various complex conditions, high anti-interference capacity and the like.
Description
Technical field
The utility model relates to a kind of apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus, and is especially a kind of for monitoring the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks whether line insulation equipment leaks electricity.
Background technology
In the network system, usually comprise power equipment/elements such as vacuum contactor, cable, voltage transformer (VT), current transformer, insulated terminal, these equipment have certain insulation characterisitic.After equipment was through long-term the use, the phenomenon that insulation characterisitic reduces usually can take place.In case the insulating property of these equipment reduce, and leakage of current just takes place, and produce more circuit loss, also can make apparatus insulated destruction simultaneously, equipment in service punctures under operating voltage or superpotential, causes to have a power failure or damage of facilities
The apparatus insulated on-Line Monitor Device major part of existing operation of power networks is single device, can only carry out the insulating monitoring of one to two kind of force device.Jian Ce equipment/element is too much if desired, then needs to install many monitoring equipments, makes that the structure of monitoring system is too complicated, and whole cost is too high.
The utility model content
The utility model is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus is provided, with monitoring system structure, the reduction system cost of simplifying insulator arrangement.
The utility model be the technical solution problem by the following technical solutions.
Based on the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks of RS485 bus, its design feature is to comprise main control unit, RS485 communication interface, signal gathering unit, low current sensor, audible-visual annunciator, display and keyboard; Described main control unit comprises microcontroller and RS485 communication interface; Described signal gathering unit comprises a plurality of data acquisition units, and each data acquisition unit connects a low current sensor; Be connected by the RS485 bus between described signal gathering unit and the described main control unit; Described audible-visual annunciator, display and keyboard all are connected with described microcontroller.
The design feature of the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus of the present utility model also is:
Described display is LCD display.
Described low current sensor is Luo-coil type current sensor.
Compared with the prior art, the utility model beneficial effect is embodied in:
The apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus of the present utility model, by utilizing RS485 bus group network technology, each force device in the operation of power networks equipment is carried out insulating monitoring, arrangement convenience, can carry out insulating monitoring to a plurality of electric power original papers simultaneously, system architecture is simple, not only be not subjected to the influence of the force device quantity of need monitoring, and the sensitivity of monitoring has also obtained effective assurance.Low, the dependable performance of system cost can be moved under various complicated occasions, has higher antijamming capability.For the quality of diagnosing cable early defect and accident potential, the sudden insulation fault of control, monitoring insulation of electrical installation performance provides effective information, can guarantee the safe and reliable operation of equipment.
Description of drawings
Fig. 1 is the structured flowchart of the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus of the present utility model.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1, the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus comprises main control unit, RS485 communication interface, signal gathering unit, low current sensor, audible-visual annunciator, display and keyboard; Described main control unit comprises microcontroller and RS485 communication interface; Described signal gathering unit comprises a plurality of data acquisition units, and each data acquisition unit connects a low current sensor; Be connected by the RS485 bus between described signal gathering unit and the described main control unit; Described audible-visual annunciator, display and keyboard all are connected with described microcontroller.
Described display is LCD display.LCD display has that volume is little, power saving, do not produce that high temperature, low radiation, benefit are healthy, the soft advantage such as eye of not hindering of picture.
Described low current sensor is Luo-coil type current sensor.Luo Shi (Rogowski, Rogovski) the coil form current sensor has advantages such as the linearity is good, measuring accuracy is high, measurement range is wide, it is measured between loop and the equipment under test does not have direct electrical link, measurement safe reliability height, can suppress noise well, can realize the on-line monitoring of little electric current, so select Luo-coil type current sensor to measure the Leakage Current of insulator arrangement.
The apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus of the present utility model adopts RS485 bus group network technology, comprises the main control unit and the signal gathering unit that connect by the RS485 bus.Main control unit shows the data message of gathering by the control command of keyboard input service personnel input by LCD display.
Described signal gathering unit is made of the data acquisition unit that several are used for each electric power original paper leakage of current signal of monitoring, described main control unit comprises microcontroller, and described microcontroller is handled the leakage of current signal that RS485 receives the signal gathering unit transmission.The leakage of current signal of each force device that data acquisition unit will collect from sensor is handled, and converting the Leakage Current signal to digital signal by the A/D conversion, sends to the microcontroller of main control unit by the RS485 bus.The utility model carries out insulating monitoring by utilizing RS485 bus group network technology to each force device in the operation of power networks equipment, arrangement convenience, can carry out insulating monitoring to a plurality of electric power original papers simultaneously, not only be not subjected to the influence of the electric power original paper quantity of need monitoring, and the sensitivity of monitoring has also obtained effective assurance.Low, the dependable performance of system cost can be moved under various complicated occasions, has higher antijamming capability.
A plurality of low current sensors are respectively applied to monitor the Leakage Current signal of force devices such as vacuum contactor, cable, voltage transformer (VT), current transformer, insulated terminal.Data acquisition unit is handled the signal of low current sensor collection, and the signal after will handling then improves the RS485 bus transfer and gives microcontroller.Microcontroller judges whether the needs warning according to collection leakage current values and default alarming value, and the staff can pass through keyboard input information, shows output information by the LCD display screen, makes it easy to operating personnel's operation control; After the leakage of current signal of each force device that signal gathering unit will collect from sensor is handled, convert the leakage of current signal to digital signal by the A/D conversion, send to main control unit by the RS485 bus again.
Claims (3)
1. based on the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks of RS485 bus, it is characterized in that, comprise main control unit, RS485 communication interface, signal gathering unit, low current sensor, audible-visual annunciator, display and keyboard; Described main control unit comprises microcontroller and RS485 communication interface; Described signal gathering unit comprises a plurality of data acquisition units, and each data acquisition unit connects a low current sensor; Be connected by the RS485 bus between described signal gathering unit and the described main control unit; Described audible-visual annunciator, display and keyboard all are connected with described microcontroller.
2. the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus according to claim 1 is characterized in that described display is LCD display.
3. the apparatus insulated on-Line Monitor Device of collecting and distributing type operation of power networks based on the RS485 bus according to claim 1 is characterized in that, described low current sensor is Luo-coil type current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198687 CN203191496U (en) | 2013-04-18 | 2013-04-18 | RS485 bus based distributed power grid operating equipment insulation online monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320198687 CN203191496U (en) | 2013-04-18 | 2013-04-18 | RS485 bus based distributed power grid operating equipment insulation online monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN203191496U true CN203191496U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320198687 Expired - Fee Related CN203191496U (en) | 2013-04-18 | 2013-04-18 | RS485 bus based distributed power grid operating equipment insulation online monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594061A (en) * | 2018-05-25 | 2018-09-28 | 杭州顿恒科技有限公司 | A kind of novel electric power grid operation equipment insulating monitoring equipment |
| CN113328518A (en) * | 2021-05-14 | 2021-08-31 | 国网江苏省电力有限公司苏州供电分公司 | Multifunctional power monitoring terminal box and use method thereof |
-
2013
- 2013-04-18 CN CN 201320198687 patent/CN203191496U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594061A (en) * | 2018-05-25 | 2018-09-28 | 杭州顿恒科技有限公司 | A kind of novel electric power grid operation equipment insulating monitoring equipment |
| CN113328518A (en) * | 2021-05-14 | 2021-08-31 | 国网江苏省电力有限公司苏州供电分公司 | Multifunctional power monitoring terminal box and use method thereof |
| CN113328518B (en) * | 2021-05-14 | 2022-08-16 | 国网江苏省电力有限公司苏州供电分公司 | Multifunctional electric power monitoring terminal box and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ANHUI GIANT FOREST ELECTRIC CO., LTD. Assignor: Yang Shouchang Contract record no.: 2014340000008 Denomination of utility model: RS485 bus based distributed power grid operating equipment insulation online monitoring device Granted publication date: 20130911 License type: Exclusive License Record date: 20140109 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20160418 |