CN201450318U - Automatic false ground preventive low-voltage power distribution device - Google Patents

Automatic false ground preventive low-voltage power distribution device Download PDF

Info

Publication number
CN201450318U
CN201450318U CN2009200332463U CN200920033246U CN201450318U CN 201450318 U CN201450318 U CN 201450318U CN 2009200332463 U CN2009200332463 U CN 2009200332463U CN 200920033246 U CN200920033246 U CN 200920033246U CN 201450318 U CN201450318 U CN 201450318U
Authority
CN
China
Prior art keywords
ground connection
voltage distribution
error ground
distribution automation
automation equipment
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
Application number
CN2009200332463U
Other languages
Chinese (zh)
Inventor
陈文辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHAANXI YANGZI ELECTRIC POWER CO Ltd
Original Assignee
SHAANXI YANGZI ELECTRIC POWER CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHAANXI YANGZI ELECTRIC POWER CO Ltd filed Critical SHAANXI YANGZI ELECTRIC POWER CO Ltd
Priority to CN2009200332463U priority Critical patent/CN201450318U/en
Application granted granted Critical
Publication of CN201450318U publication Critical patent/CN201450318U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to an automatic false ground preventive low-voltage power distribution device, which overcomes shortages that in the prior art, a low-voltage knife-switch is difficult in grounding, has hidden dangers of switching on with ground wires and is easy to cause security accidents. The power distribution device comprises a tank body, a current transformer, a knife-switch and a lightning arrester, wherein the current transformer, the knife-switch and the lightning arrester which are sequentially connected are arranged inside the tank body, and a residual current operated protective device is connected between the current transformer and the knife-switch. The automatic false ground preventive low-voltage power distribution device has the advantages of excellently automatic control.

Description

Anti-error ground connection low-voltage distribution automation equipment
Technical field
The utility model relates to a kind of anti-error ground connection low-voltage distribution automation equipment.
Background technology
At present in the low voltage electric network, distribution transformer low pressure leading-out terminal is through power distribution cabinet (dish, case) outlet, adopt built on stilts plain conductor, suspended insulated guide wire, sunken cord and the Bundling conducting wire mode is powered.In real work, owing to need on line facility, work, according to the requirement of " rural area low-voltage electrical trouble free service rules ": " should on the conductor of two ends, the working point of repair apparatus (section) hanging earthing conductor ".In the real work, owing to be not fit to the special-purpose earth connection of low-voltage distribution cabinet (dish, case), so adopt the earth connection of other form to go to articulate mostly.But low-voltage distribution cabinet (dish, case) space is narrow and small, influences other working line equipment and very dangerous easily; Circuit adopt insulated conductor, sunken cord and Bundling conducting wire, if want hanging earthing conductor, certainly will on lead, increase a lot of openings, influence the operation of line facility, brought difficulty to a certain degree to service work; If be connected to generator in the circuit, be easy to take place security incident; When after hours, operating personnel may forget and remove earth connection and the power supply of directly closing a floodgate, and then might have the hidden danger of switching on earth wire.
At present; the earth leakage protective product is popularized in rural power grids; but its operation and management level also quite lags behind; can't in time know running status; in case the malfunction tripping operation also needs artificial execute-in-place to close a floodgate; had a strong impact on the reliability and the continuity of power supply, service quality and the efficient of power supply enterprise has been proposed stern challenge.
Summary of the invention
The utility model provides a kind of anti-error ground connection low-voltage distribution automation equipment, with the defective that overcomes prior art mesolow disconnecting link ground connection difficulty, has the hidden danger of switching on earth wire and security incident takes place easily.
Technical solution of the present utility model is:
A kind of anti-error ground connection low-voltage distribution automation equipment comprises casing and is arranged on current transformer, disconnecting link and the lightning arrester that connects successively in the casing that its special character is: be connected with RCD between current transformer and disconnecting link.
Above-mentioned disconnecting link is anti-error ground connection disconnecting link.
The grounding contact that above-mentioned anti-error ground connection disconnecting link comprises base, equates with fixed contact with at least two fixed contacts, the moving contact that is connected with load, quantity that RCD is connected respectively; Described fixed contact and grounding contact are separately positioned on the two ends of base, and described moving contact is arranged on the centre of fixed contact and grounding contact; Described grounding contact is connected with ground wire.
Above-mentioned anti-error ground connection low-voltage distribution automation equipment comprises the concentrator that links to each other with RCD.
Above-mentioned concentrator includes the automatic meter reading system data concentrator and intelligence is leaked insurance system on-line monitoring instrument.
Be connected with locking device between above-mentioned anti-error ground connection disconnecting link and RCD.
Above-mentioned anti-error ground connection low-voltage distribution automation equipment includes gauge table, and described casing includes anti-electricity-theft measuring room, and described gauge table is positioned in the anti-electricity-theft measuring room.
Two sides, distribution box front and back is located in opening the door of above-mentioned anti-error ground connection low-voltage distribution automation equipment, and described casing is that corrosion resistant plate is welded, and thickness is 1.2~1.5mm.
Above-mentioned lightning arrester is the 0.22kV zinc oxide arrester.
Technique effect of the present utility model is:
1, simple in structure.The utility model is the structural improvement at common low pressure disconnecting link, only need increase the ground connection disconnecting link of respective numbers on the basis of common low pressure disconnecting link, and reliable ground can be realized in its below that is arranged on moving contact.
2, ground connection is convenient.When for the first time the utility model low pressure short circuit ground connection disconnecting link being installed, the lead-out wire of grounding contact is linked to each other with the special-purpose earth electrode of power distribution cabinet, can guarantee the reliable ground after any time is drawn back disconnecting link.
3, can prevent the generation of switching on earth wire accident.By reasonable Arrangement to fixed contact, moving contact and grounding contact, can not connect power supply in the time of can guaranteeing disconnecting link ground connection, impossible ground connection has promptly been realized the mechanical latching to single power supply when connecing power supply, prevents the generation of switching on earth wire accident.
4, can prevent the generation of bringing onto load broaching tool lock accident.The utility model adds electric-magnetic lock at this disconnecting link mains side, then can realize preventing the generation of bringing onto load broaching tool lock accident.
5, anti-error ground connection disconnecting link of the present utility model is owing to have distribution, outage, obvious cut-off point, short circuit grounding function, and the ground connection disconnecting link that directly closes during line outage is realized the line short ground protection, and with mains side obvious cut-off point is arranged.
6, in the utility model owing to include RCD, so the utlity model has following performance:
6.1 have overload, short circuit, phase shortage, under-voltage, the mains side neutral line disconnects, the residual current protecting function;
6.2 circuit breaker automatic trip when having a power failure, closing function automatically resets after incoming call or the under-voltage recovery normal voltage of phase shortage;
Control and warning output 6.3 there is external control interface to reset at a distance;
6.4 branch, combined floodgate can be manually and are operated conversion automatically, are convenient to circuit, the work of equipment interruption maintenance;
6.5 rated current, each phase load Control current, residue operating current can be regulated and be provided with as required;
6.6 can monitor and automatically show rated current, residual current, each load current, each phase load Control current and all time control parameters in real time mutually, transfinite or can show the tripping current that transfinites or transship phase during overload trip.
7, machinery, the electric blocking device of anti-error ground connection disconnecting link of the present utility model and RCD can prevent effectively that bringing onto load from drawing, closing the misoperation fault of isolating switch and switching on earth wire.
8, has independently anti-electricity-theft measuring room, the utility model is default in respect of corresponding independently installation room for the automatic meter reading system data concentrator, the intelligence leakage insurance system on-line monitoring instrument that are about to implement, changes the existing apparatus housing when avoiding implementing this project or increases install bin in addition.
9, casing adopts corrosion resistant plate to be welded, and thickness is not less than 1.2~1.5mm, and support component has sufficient intensity, the unlikely damage of the caused active force of short circuit in the time of bearing transportation, install and move.
10, open the door before and after the utility model, two-sided layout, in the case space utilization abundant, rationally distributed, components and parts are installed and are come into plain view, the wiring standard, handling safety is maked an inspection tour, is safeguarded, maintenance is convenient, uses for one the case more.
11, the utility model includes concentrator, because concentrator contains monitoring function and communication function, so Monitoring Line switch operating condition in real time not only; Show and storage running operating mode and protection action, alarm condition; Utilization communication (wired, optical fiber, wireless) means are transmitted circuit operation electric parameter and protection action, alarm parameters and the moment in real time; Electric parameter, protection action parameter, alarm parameters can be become the note form, send to microcomputer, and have bi-directional communication function and GPRS function; Possess wired, wireless and on-the-spot detection, communication interface; Can send the intelligent breaker operation information in real time; Realize abnormal data transmission (management); Realization is to the distant place control (dividing and lock) of intelligent breaker; Realize adjusting (settings) and realizing mass-sending RCD is carried out performance test of protection, warning definite value parameter.
12, the utility model possesses extremely strong automatic controlled function.
The utility model is monitored area under one's jurisdiction earth leakage protective device running status automatically by Control Software; and all kinds of instant service datas are sent to Chinese liquid crystal display terminal by concentrator; send warning message according to the demonstration situation from trend monitoring host computer and mobile phone; Long-distance Control protector divide-shut brake, adjustment operating value, matching management software carries out statistical analysis and report output.
The utility model adopts the high performance flush bonding processor of super low-power consumption, the mode of controller switching equipment terminal by wireless (GPRS network) and wired (optical fiber, local telephone network) is connected with network, solved " four is distant " problem, i.e. remote signalling, remote control, remote measurement, remote regulating can be monitored in real time.
Remote signalling: refer to telecommunication (relying on carrier wave, wireless GPRS, wired optical fiber etc.);
Remote control: Long-distance Control branch, combined floodgate, failure exception is reported to the police;
Remote measurement: the acquisition and recording of voltage, electric current, electric flux;
Remote regulating: to voltage, current protection parameter, the isoparametric adjustment of residual current acting time.
The utility model is connected the controller switching equipment terminal with wired, wireless network, realize the transmitted in both directions of data.Receive operation information, transmit button instruction, only need to realize by button or computer mouse operation.
Description of drawings
Fig. 1 is electrical schematic diagram of the utility model one-in-and-two-out.
Fig. 2 goes out electrical schematic diagram one time for the utility model one advances three.
Fig. 3 is the utility model locking device winding diagram.
Structural representation when Fig. 4 is the utility model two phase connections.
Reference numeral is as follows:
The 1-current transformer, 2-RCD, the anti-error ground connection disconnecting link of 3-, 4-lightning arrester, 5-locking device, 6-concentrator, 7-casing.
Embodiment
Referring to Fig. 1 and Fig. 2, the utility model is a kind of anti-error ground connection low-voltage distribution automation equipment, comprise casing 7 and be arranged on current transformer 1, RCD 2, anti-error ground connection disconnecting link 3 and lightning arrester 4 in the casing 7, the grounding contact that anti-error ground connection disconnecting link 3 comprises base, equates with fixed contact with at least two fixed contacts, the moving contact that is connected with load, quantity that RCD is connected respectively; Fixed contact and grounding contact are separately positioned on the two ends of base, and moving contact is arranged on the centre of fixed contact and grounding contact; Grounding contact is connected with ground wire.Lightning arrester wherein can be the 0.22kV zinc oxide arrester.
The utility model can also comprise the concentrator 6 that links to each other with RCD; concentrator 6 includes the automatic meter reading system data concentrator and intelligence is leaked insurance system on-line monitoring instrument; can make concentrator have monitoring function and communication function, realize function expansion.Referring to Fig. 3, can also between described anti-error ground connection disconnecting link and RCD, be connected with locking device 5.Locking device 5 comprises machinery, electric blocking device.
For the ease of installing and safeguarding, can be located at two sides, the utility model front and back with opening the door, described casing is that corrosion resistant plate is welded, thickness is 1.2~1.5mm.
The utility model installation requirement is as follows:
1, the metal shell of the metal architecture of casing, iron pan face and electric equipment should have good ground connection in this device;
2, the current in wire line of the measuring instrument that is equipped with in this device, instrument transformer, secondary side is not less than 4.0mm 2, pressure-wire is not less than 2.5mm 2Copper core insulation line;
3, neat, the colligation bunchy and fixing of distribution, lead leaves suitable remaining;
When 4, lead passes the iron pan face, the rubber guard ring should be arranged;
5, the electric equipment of installing in this device, last termination power, following termination load; For the anti-misoperation disconnecting link, last termination power, indirect load, lower end ground connection;
6, bus of this device and circuit outlet should have Huang, green, red, nattier blue minute facies marker.
The utility model can be achieved as follows function:
1, electric weight remote collection function: single-phase, three-phase family table is concentrated with the summary table electric weight and is gathered; Electric quantity acquisition (meritorious electric weight, capacity of idle power, timesharing electric weight, active power, reactive power, Pinggu, peak, maximum power memory and Presentation Function), electricity charge warning, arrearage control; Three-phase voltage supervision, three-phase current and N item current surveillance.
2, RCD information gathering and transmission: RCD adopts " the high performance flush bonding processor of super low-power consumption ", by 485 interfaces, solved " four is distant " problem, i.e. remote signalling, remote measurement, remote control, remote regulating can be surveyed real-time monitoring; Operating current, operating voltage, unbalance voltage leakage current, working temperature running status, long-range transmission show; Rated operational current, specified residue leakage current, running status, long-range setting; The historical data retrieval is supported in the memory of circuit breaker running status, and long-range cable modem, disconnecting mouth can cooperate anti-error ground connection disconnecting link, the control of electric energy meter pre-payment etc.
3, monitor area under one's jurisdiction earth leakage protective device running status automatically, Long-distance Control protector divide-shut brake, adjustment operating value.
4, Equipment Management Function is as reporting to the police: unpack and report to the police, have a power failure warning, anti-phase warning, overtemperature alarm, overload-alarm, burglar alarm, data communication, data query.
5, matching management software carries out statistical analysis and report output.

Claims (9)

1. an anti-error ground connection low-voltage distribution automation equipment comprises casing and is arranged on current transformer, disconnecting link and the lightning arrester that connects successively in the casing, it is characterized in that: be connected with RCD between current transformer and disconnecting link.
2. anti-error ground connection low-voltage distribution automation equipment according to claim 1 is characterized in that:
Described disconnecting link is anti-error ground connection disconnecting link.
3. anti-error ground connection low-voltage distribution automation equipment according to claim 2 is characterized in that:
The grounding contact that described anti-error ground connection disconnecting link comprises base, equates with fixed contact with at least two fixed contacts, the moving contact that is connected with load, quantity that RCD is connected respectively; Described fixed contact and grounding contact are separately positioned on the two ends of base, and described moving contact is arranged on the centre of fixed contact and grounding contact; Described grounding contact is connected with ground wire.
4. according to claim 1 or 2 or 3 described anti-error ground connection low-voltage distribution automation equipments, it is characterized in that:
Described anti-error ground connection low-voltage distribution automation equipment comprises the concentrator that links to each other with RCD.
5. anti-error ground connection low-voltage distribution automation equipment according to claim 4 is characterized in that:
Described concentrator includes the automatic meter reading system data concentrator and intelligence is leaked insurance system on-line monitoring instrument.
6. anti-error ground connection low-voltage distribution automation equipment according to claim 5 is characterized in that:
Be connected with locking device between described anti-error ground connection disconnecting link and RCD.
7. anti-error ground connection low-voltage distribution automation equipment according to claim 6 is characterized in that:
Described anti-error ground connection low-voltage distribution automation equipment includes gauge table, and described casing includes anti-electricity-theft measuring room, and described gauge table is positioned in the anti-electricity-theft measuring room.
8. anti-error ground connection low-voltage distribution automation equipment according to claim 7 is characterized in that:
Two sides, distribution box front and back is located in opening the door of described anti-error ground connection low-voltage distribution automation equipment, and described casing is that corrosion resistant plate is welded, and thickness is 1.2~1.5mm.
9. anti-error ground connection low-voltage distribution automation equipment according to claim 8 is characterized in that:
Described lightning arrester is the 0.22kV zinc oxide arrester.
CN2009200332463U 2009-05-20 2009-05-20 Automatic false ground preventive low-voltage power distribution device Expired - Fee Related CN201450318U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200332463U CN201450318U (en) 2009-05-20 2009-05-20 Automatic false ground preventive low-voltage power distribution device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200332463U CN201450318U (en) 2009-05-20 2009-05-20 Automatic false ground preventive low-voltage power distribution device

Publications (1)

Publication Number Publication Date
CN201450318U true CN201450318U (en) 2010-05-05

Family

ID=42555041

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200332463U Expired - Fee Related CN201450318U (en) 2009-05-20 2009-05-20 Automatic false ground preventive low-voltage power distribution device

Country Status (1)

Country Link
CN (1) CN201450318U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103066552A (en) * 2012-12-28 2013-04-24 麦广宇 Control method for avoiding false switching-on of breaker and circuit thereof
CN111029226A (en) * 2019-12-07 2020-04-17 浙江大学 Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103066552A (en) * 2012-12-28 2013-04-24 麦广宇 Control method for avoiding false switching-on of breaker and circuit thereof
CN103066552B (en) * 2012-12-28 2015-01-07 麦广宇 Control method for avoiding false switching-on of breaker and circuit thereof
CN111029226A (en) * 2019-12-07 2020-04-17 浙江大学 Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction
CN111029226B (en) * 2019-12-07 2020-11-06 浙江大学 Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction

Similar Documents

Publication Publication Date Title
CN203071571U (en) Intelligent monitoring device for distributed boundary switches
CN201444191U (en) Direct-current power supply online monitoring system
CN103618381A (en) Protecting and measuring integrated comprehensive distribution box
CN111146755B (en) Feeder terminal and line protection device
CN102891533B (en) A kind of 800kV intelligent breaker
CN208571394U (en) A kind of photovoltaic power generation box-type substation based on intelligent controller
CN202260626U (en) Intelligent power distribution system
CN103051057B (en) Condition-based Maintenance of Substation Equipment intelligent management supervisory control system
CN203660664U (en) Comprehensive distribution box integrating protection, measurement and control
CN201345506Y (en) Intellectualized power distribution cabinet
CN205159193U (en) Vacuum circuit breaker on 10kV solar energy intelligence post
CN201450318U (en) Automatic false ground preventive low-voltage power distribution device
CN201860040U (en) Intelligent distribution cabinet provided with grounding switch and integrating remote communication control and short message transmission
CN113013988A (en) Intelligent power distribution cabinet based on double networks
CN203242926U (en) Low-voltage power distribution cabinet with residual current protection function
CN202110432U (en) Remote monitoring feeder terminal
CN201616596U (en) Single-phase intelligent type alternating-current distribution box
CN209878853U (en) Three-phase five-wire system rural area electricity larceny prevention device
CN106058893A (en) High-voltage and high-capacity chain-type STATCOM device protection system
CN206834842U (en) Intelligent O&M power distribution control system
CN201044489Y (en) Short message locating trouble device
CN105098646B (en) A kind of indoor intelligence 10kV demarcation circuit breaker switchgears with communication function
CN2938505Y (en) Intelligent reactive compensation distribution box
CN216720558U (en) Household intelligent safety photovoltaic grid-connected distribution box
CN209448321U (en) One or two fusion ring network cabinets

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100505

Termination date: 20120520

C17 Cessation of patent right