CN203658509U - Cable grounding remote monitoring system - Google Patents
Cable grounding remote monitoring system Download PDFInfo
- Publication number
- CN203658509U CN203658509U CN201320303269.8U CN201320303269U CN203658509U CN 203658509 U CN203658509 U CN 203658509U CN 201320303269 U CN201320303269 U CN 201320303269U CN 203658509 U CN203658509 U CN 203658509U
- Authority
- CN
- China
- Prior art keywords
- radio reception
- reception controller
- grounding
- cable
- audible
- 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.)
- Expired - Fee Related
Links
- 238000012544 monitoring process Methods 0.000 title abstract description 4
- 238000009826 distribution Methods 0.000 claims abstract description 32
- 230000007935 neutral effect Effects 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Abstract
The utility model relates to the technical field of power monitoring system, and discloses a cable grounding remote monitoring system. The system is provided with a zero sequence current transformer which is fixed on a 0.4 kV to 35 kV field branch power distribution cable, and the zero sequence current transformer is connected with a radio transmitter through a small current neutral grounding detection circuit. The radio transmitter is connected with a radio reception controller through an antenna in a wireless manner. An output end of the radio reception controller is connected with an audible and visual alarm. The radio reception controller is connected with distribution network automation through a modem. The system can reduce check-up connection processing and grounding operation time for circuit administrators, reduces workload, relieves two-phase devices from being damaged by line voltage when grounding, improves device service life, and reduces resonance time of the current transformer, the transformer, and a ferromagnet. A most important point is to reduce life safety risks of live check-up connection personnel and personnel around a grounding point. The system is large in adaptable voltage range, low in cost, easy in implement and resource sharing, and distribution network automation level is improved.
Description
Technical field
The utility model relates to electric power monitoring system technical field, relates in particular to a kind of cable grounding Long-Range Surveillance System.
Background technology
At present, in generating plant, transformer substation switch station, 6kV, 10kV, 35kV, 66kV distribution line are the chief components of electric system.It is earth-free or through the mode of arc suppression coil, resistance eutral grounding that neutral point in the system of these electric pressures in transformer and generator has all adopted, and carries out power transmission and distribution.And on the bus of same electric pressure, there are again many output distribution circuits to be connected, and the present development need urbanization along with civilized society, community's growth requirement, also implement distribution ring network power supply for improving power supply reliability city, article one, on distribution line, there are again a lot of branches, set up by " radiation " is strong, and existing branch is mostly to underground cable future development, in this class distribution line, can there is phase fault, the phenomenon of the failure such as excess current and single-phase earthing, wherein the incidence of single-phase earthing is the most frequent, account for the more than 70% of system total failare rate, short trouble mostly also is single-phase earthing overlong time and causes, ungrounded phase voltage raises, heating, insulation breakdown, therefore developing heterogeneous ground connection causes.But from transformer station, switchyard, the generating plant of China, small current neutral grounding system or complex automatic system have all been installed in outlet.In circuit outgoing line cabinet, zero sequence current mutual inductor is installed, on distribution line, can have been found in time as long as there is ground connection.Now circuit is so long, branch is many, that ground connection occurs at which place, the managerial personnel of supply line are difficult to find out for the moment, charged line inspection danger coefficient is large, time is long, and the inspection that has a power failure causes larger power failure area, not only affects industrial and agricultural production, responsible consumer has a power failure, and also can cause larger loss and harmful effect also to affect power supply enterprise's economic benefit.
Summary of the invention
In order to solve distribution network cable branch cable fault ground, the charged line inspection time of power supply department line management personnel is long, and work efficiency reduces, affect staff or without reason personnel pass through the life security of cable fault access area.And the power failure line inspection causes delivery few, affect power supply reliability, business indicators benefit reduces, and the utility model provides a kind of cable grounding Long-Range Surveillance System.Can, in the time that cable has earth fault, by wireless communication technique, optical fiber communication technology, then show on fulgurite institute microcomputer by converter, the while also has advance notice letter to send, and solves the defect of above-mentioned existence, and promotes distribution automation level.
For realizing the object of foregoing invention, the utility model adopts following technical scheme:
A kind of cable grounding Long-Range Surveillance System, comprise: zero sequence current mutual inductor, small current neutral grounding testing circuit, transmitting set, radio reception controller, modulator-demodular unit, power supply, distribution automation, sun-generated electric power and ups power, the zero sequence current mutual inductor being fixed on 0.4KV-35kV field branch distribution cable is connected with transmitting set by small current neutral grounding testing circuit, transmitting set is by antenna and the wireless connections of radio reception controller, radio reception controller output end is connected with audible-visual annunciator, radio reception controller or be connected with distribution automation by modulator-demodular unit,
Wherein the power end of small current neutral grounding testing circuit, transmitting set is connected with sun-generated electric power; Wherein radio reception controller, modulator-demodular unit, distribution automation are connected with ups power.
A kind of cable grounding Long-Range Surveillance System, described audible-visual annunciator is made up of several audible-visual annunciators, each audible-visual annunciator is by triggering controllable silicon and sound light alarming circuit is electrically connected to form, the audible alarm circuit of sound light alarming circuit is connected and composed by triode and loudspeaker by ic chip 3, and the luminous alarm circuit of sound light alarming circuit is made up of LED.
A kind of cable grounding Long-Range Surveillance System, described sun-generated electric power is connected to form by photo-voltaic power supply GF, anti-reverse charging electric diode VD1, anti-reverse diode VD2, voltage detecting controller DYJCKZQ and relay T.
Owing to adopting said method: the utlity model has following superiority:
A kind of cable grounding Long-Range Surveillance System, there is applicable voltage range large, the following line-to-ground of branch cable, signal transmission time is short, can make line management person's line inspection process the shortening of ground connection working time, reduces workload, while alleviating ground connection, even two-phase equipment stands the harm of line voltage, improve service life of equipment, reduce current transformer, transformer, ferroresonance time, main is the risk that reduces charged line inspection personnel and near the personnel's life security of earth point.
It is low that this cable grounding Long-Range Surveillance System makes full use of radiotelegraphy cost, is convenient to implement, and electric system distribution line is disperseed, and searches the earth fault time long, looking up the fault point difficulty, and these problems are resolved, and have improved distribution automation level.
Sun-generated electric power and storage battery power supply for transmitting set power acquisition, dependable performance energy-conserving and environment-protective, the advantage such as maintenance is little, radio reception controller power source accesses UPS by charging and powers, and has improved the reliability of ground signalling transmission.
The utility model can be in the time of 10kV distribution branch cable and following line-to-ground, by ground connection information, upload to jurisdiction power supply station by radiotelegraphy, passes counties and districts' scheduling back again by modulator-demodular unit, optical transmitter and receiver, optical fiber, shows telemonitoring again by microcomputer.Utilize radiotelegraphy teletransmission near transformer station or fulgurite institute, by radio coding technology, show on fulgurite institute microcomputer by protocol converter again, while also has advance notice letter to send, and utilize LAN (Local Area Network) to counties and districts' tune, mediation distribution automation, duty room, make the resource sharing of cable grounding anticipating signal.
Accompanying drawing explanation
Fig. 1 is cable grounding Long-Range Surveillance System block scheme;
Fig. 2 is the transmitting set circuit diagram of Long-Range Surveillance System;
Fig. 3 is the radio reception controller circuitry figure of Long-Range Surveillance System;
Embodiment
As schemed: 1, 2, shown in 3, a kind of cable grounding Long-Range Surveillance System, comprise: zero sequence current mutual inductor, small current neutral grounding testing circuit, transmitting set, radio reception controller, modulator-demodular unit, power supply, distribution automation, sun-generated electric power and ups power, zero sequence current mutual inductor on the described 0.4kV-35kV of being fixed on field branch distribution cable is connected with transmitting set by small current neutral grounding testing circuit, transmitting set is by antenna and the wireless connections of radio reception controller, radio reception controller output end is connected with audible-visual annunciator, radio reception controller or be connected with distribution automation by modulator-demodular unit,
Wherein the power end of small current neutral grounding testing circuit, transmitting set is connected with sun-generated electric power; Wherein radio reception controller, modulator-demodular unit, distribution automation are connected with ups power.
Described audible-visual annunciator is made up of several audible-visual annunciators, each audible-visual annunciator is by triggering controllable silicon and sound light alarming circuit is electrically connected to form, the audible alarm circuit of sound light alarming circuit is connected and composed by triode and loudspeaker by ic chip 3, and the luminous alarm circuit of sound light alarming circuit is made up of LED.
Described sun-generated electric power is connected to form by photo-voltaic power supply GF, anti-reverse charging electric diode VD1, anti-reverse diode VD2, voltage detecting controller DYJCKZQ and relay T.
1, on Mei road 0.4kV-35kV field branch distribution cable, zero sequence current mutual inductor is installed, in the time of the following circuit generation of branch circuit earth fault, sun-generated electric power and storage battery power supply for transmitting set power acquisition;
2, every road wireless launcher has earth fault line information, is transferred to the radio reception controller of fulgurite institute duty room by radio transmission mode;
3, radio reception controller has the earth fault line information of sending receiving Mei road wireless launcher, sends light warning by audible-visual annunciator; Or transfer to the automation control system of distribution by modulator-demodular unit, realize the telemonitoring of cable earth fault line information.
Described radio reception controller has simultaneously the earth fault information that receives, monitors that many different distribution line wireless launchers of electric pressure send, and radio reception controller power source adopts the UPS power supply of charging, and the Emergency use while power failure is provided.
Principle of work: power cable passes in the middle of zero sequence current mutual inductor, zero sequence current mutual inductor secondary passes through again transmitting set by small current neutral grounding testing circuit XDLJDJC, ground signalling is sent, by radio reception controller, indicate earth fault cable line and equipment by audible-visual annunciator again.Can also automatically network by modulator-demodular unit TZJTQ and the distribution of duty room.
Transmitting set is connected with sun-generated electric power; VD1 is anti-reverse charging electric diode; VD2 is anti-reverse diode; T1 is the gauge tap of relay, and BX is fuse, and switch T1 is connected in parallel on the output terminal of solar cell; voltage detecting controller DYJCKZQ is electrically connected with the photo-voltaic power supply GF of sun power by relay T; the gauge tap T1 conducting of relay, bypass, plays additives for overcharge protection.
In the time that overcast and rainy night, solar cell output voltage was less than accumulator, VD1 cut-off, guarantees overcast and rainy night, and accumulator is not to solar cell reverse charge.
VD2 is anti-reverse diode, and when the reverse polarity connection of electricity storage preventing pond, VD2 conducting makes accumulator pass through VD2 short circuit dischange, produces very large electric current fast by fuse BX fusing, finds in time to process once installation personnel.Detecting control short circuit detects battery tension at any time.
Claims (3)
1. a cable grounding Long-Range Surveillance System, it is characterized in that: comprising: zero sequence current mutual inductor, small current neutral grounding testing circuit, transmitting set, radio reception controller, modulator-demodular unit, power supply, distribution automation, sun-generated electric power and ups power, the zero sequence current mutual inductor being fixed on 0.4kV-35kV field branch distribution cable is connected with transmitting set by small current neutral grounding testing circuit, transmitting set is by antenna and the wireless connections of radio reception controller, radio reception controller output end is connected with audible-visual annunciator, radio reception controller or be connected with distribution automation by modulator-demodular unit,
Wherein the power end of small current neutral grounding testing circuit, transmitting set is connected with sun-generated electric power; Wherein radio reception controller, modulator-demodular unit, distribution automation are connected with ups power.
2. a kind of cable grounding Long-Range Surveillance System according to claim 1, it is characterized in that: described audible-visual annunciator is made up of several audible-visual annunciators, each audible-visual annunciator is by triggering controllable silicon and sound light alarming circuit is electrically connected to form, the audible alarm circuit of sound light alarming circuit is connected and composed by triode and loudspeaker by ic chip 3, and the luminous alarm circuit of sound light alarming circuit is made up of LED.
3. a kind of cable grounding Long-Range Surveillance System according to claim 1, is characterized in that: described sun-generated electric power is connected to form by photo-voltaic power supply GF, anti-reverse charging electric diode VD1, anti-reverse diode VD2, voltage detecting controller DYJCKZQ and relay T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320303269.8U CN203658509U (en) | 2013-05-30 | 2013-05-30 | Cable grounding remote monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320303269.8U CN203658509U (en) | 2013-05-30 | 2013-05-30 | Cable grounding remote monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203658509U true CN203658509U (en) | 2014-06-18 |
Family
ID=50924884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320303269.8U Expired - Fee Related CN203658509U (en) | 2013-05-30 | 2013-05-30 | Cable grounding remote monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203658509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278733A (en) * | 2013-05-30 | 2013-09-04 | 孟津县电业公司 | Cable ground connection remote monitoring method and remote monitoring system |
-
2013
- 2013-05-30 CN CN201320303269.8U patent/CN203658509U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278733A (en) * | 2013-05-30 | 2013-09-04 | 孟津县电业公司 | Cable ground connection remote monitoring method and remote monitoring system |
| CN103278733B (en) * | 2013-05-30 | 2016-08-10 | 国家电网公司 | A kind of cable grounding remote monitoring method and Long-Range Surveillance System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101908780B (en) | Intelligent remote monitoring box-type substation | |
| CN101738565A (en) | Adaptive fault indicator | |
| CN201750078U (en) | Intelligent remote control box type substation | |
| CN104638768A (en) | Intelligent power distribution security control terminal based on residential electricity consumption | |
| CN203312781U (en) | Integrated anti-islanding protection system for distributed power generation | |
| CN104330686A (en) | System for detecting power supply circuit fault | |
| CN101651364A (en) | Remote automation control high-voltage measurement comprehensive distribution equipment | |
| CN103278733B (en) | A kind of cable grounding remote monitoring method and Long-Range Surveillance System | |
| CN103558502A (en) | Single-phase earth fault detection circuit, method and system | |
| CN103887888A (en) | Fuse protector on-line monitoring system | |
| CN103887887A (en) | Intelligent low-voltage distribution network voltage-loss outage alarming terminal | |
| CN103344869A (en) | Wire-breakage alarming device and method suitable for 6-35kV power distribution network | |
| CN104330704A (en) | Transmission and distribution power grid fault positioning system | |
| CN102074994A (en) | Charging device of direct-current (DC) system | |
| CN104183108B (en) | SF6Switch alarm and block signal radio transmitting device | |
| CN203522212U (en) | Photovoltaic power station system possessing low voltage ride through and anti-island protection functions | |
| CN103762557B (en) | The anti-open-circuit-protection method of current transformer | |
| CN203658509U (en) | Cable grounding remote monitoring system | |
| CN203312920U (en) | Intelligent integrated system of PT cabinet | |
| CN201616596U (en) | Single-phase intelligent type alternating-current distribution box | |
| CN103887811A (en) | Distributed power supply system and control method with low voltage ride through and anti-islanding protective functions | |
| CN203798960U (en) | Overhead line remote transmission communication monitoring system | |
| CN204669079U (en) | A kind of safety control for resident's distribution | |
| CN104979911A (en) | Remote monitoring system for transformer | |
| CN105277854B (en) | A kind of arrester ground indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |