CN203301126U - Leakage protector for preventing low voltage inverse power transmission - Google Patents
Leakage protector for preventing low voltage inverse power transmission Download PDFInfo
- Publication number
- CN203301126U CN203301126U CN2013201669485U CN201320166948U CN203301126U CN 203301126 U CN203301126 U CN 203301126U CN 2013201669485 U CN2013201669485 U CN 2013201669485U CN 201320166948 U CN201320166948 U CN 201320166948U CN 203301126 U CN203301126 U CN 203301126U
- Authority
- CN
- China
- Prior art keywords
- signal
- electrically connected
- power transmission
- power
- control loop
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- 230000001012 protector Effects 0.000 title abstract 8
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims description 25
- 238000005381 potential energy Methods 0.000 claims description 8
- 230000006870 function Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000009993 protective function Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a leakage protector for preventing low voltage inverse power transmission. The protector comprises an electromagnetic induction signal generator, a power directional element, an electric signal control loop, and a tripping and disconnecting device, wherein an input port of the electric signal control loop is electrically connected with the electromagnetic induction signal generator, and is electrically connected with an output port of the power directional element; an output port of the electric signal control loop is electrically connected with the tripping and disconnecting device; and an input port of the power directional element is electrically connected with a load line. The leakage protector for preventing low voltage inverse power transmission has the advantages that 1) the protector has a leakage protection function and a protective function of preventing low voltage inverse power transmission on a user side; 2) the protector has a simple structure and is convenient to install and replace; 3) the protector is strong in practicality, and guarantees the safety on the user side and the safety of the distribution work overhaul operation; and 4) the protector is low in input cost and easy to produce and promote, and thus has a wide application prospect.
Description
Technical field
The utility model relates to a kind of low pressure automatic control switch equipment, particularly a kind of anti-low power transmission earth leakage protective device that overwhelms that is applicable to the low pressure resident.
Background technology
Individual workship of present many families is from having small generator, and they just generate power for their own use in case have a power failure, and small generator falls power transmission to distribution line.The modern life be unable to do without computer, particularly large enterprises, major company has the UPS inverter in order to prevent certainly because of the obliterated data information of cutting off the power supply suddenly, and the UPS inverter also can be to the distribution line energy of falling the power transmission.Along with the utilization of continually developing of new forms of energy, many user installation have solar cell, and solar cell also can fall power transmission to distribution line.The user is power autonomous to be difficult to very supervision and to put in place, small generator particularly, and the user mutually uses phenomenon and happens occasionally, and brings very big potential safety hazard not only for the upkeep operation of distribution, and affects the power supply quality of distribution.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of applicable anti-user's side leakage electricity of user's house lead in point and anti-low power transmission earth leakage protective device that overwhelms of anti-power transmission energy of being installed on is provided.
A kind of anti-low power transmission earth leakage protective device that overwhelms; its structural feature is: comprise electromagnetic induction signal generator, power directional element, signal of telecommunication control loop, dropout disconnection device; the input port of described signal of telecommunication control loop and electromagnetic induction signal generator are electrically connected mutually; and with the power directional element output port, mutually be electrically connected; signal of telecommunication control loop output port and dropout disconnection device are electrically connected mutually, and power directional element input port and loaded line are electrically connected mutually.
The anti-low electromagnetic induction signal generator that overwhelms the power transmission earth leakage protective device of the present utility model produces signal code; or power directional element is differentiated power direction and the output signal electric current; signal code is through signal of telecommunication control loop input dropout disconnection device; the dropout disconnection device is carried out the dropout off-the-line by setting fixation, cuts off electric leakage unbalanced load and backward power input load.
Described electromagnetic induction signal generator comprises electromagnet, electromagnetic induction coil, and load wire is around on electromagnet, and electromagnetic induction coil is wound on same electromagnet, mutually insulated between load wire and electromagnetic induction coil.
Described electromagnetic induction signal generator operation principle is: under normal circumstances, be around magnetic flux equal and opposite in direction, opposite direction that magnetic flux that the loaded line phase line in electromagnet produces and zero line produce, cancel each other, in electromagnetic induction signal generator coil, without flux change, the electromagnetic induction signal generator is exported without the signal of telecommunication.When leak current fault was arranged, this balance was broken, and the electromagnetic induction signal generator has signal of telecommunication output, through signal of telecommunication control loop, is transferred to the dropout disconnection device, reached and cut off loaded line electrical connection purpose.The signal code that described electromagnetic induction signal generator produces is load-side while leak current fault occurring, the induced current that in electromagnetic induction signal generator coil, magnetic flux changes and produces.
Described power directional element comprises current work forward and reversal of identification module, reverse power control circuit, backward power electrical signal mouth.The power direction identification module adopts the directional power relay technology, meritorious and the reverse active current of forward is utilized the unidirectional general character design circuit of diode, the electrical signal of oppositely gaining merit is connected in signal of telecommunication control loop output port, and signal of telecommunication control loop output port and dropout disconnection device are electrically connected mutually.The power directional element input is connected in the load-side terminals and forms mutual electrical connection.
Described power directional element is a kind of current work discriminating direction module.When backward power output was arranged, output electrical signals was transferred to the dropout disconnection device through signal of telecommunication control loop, reached and cut off loaded line electrical connection purpose.Described power directional element is differentiated power direction and the signal code exported is that load-side has electromotive force, when electric energy is sent to supply side, and the current signal that power directional element will be differentiated and export.These abnormal current signal input electrical signal control loops, when reaching the fixation of setting, carry out the electrical connection of disconnecting consumers and electrical network through the dropout disconnection device.
Described signal of telecommunication control loop comprises signal of telecommunication amplifying device, quiescent current directional control circuit.Quiescent current directional control circuit and signal of telecommunication amplifying device are electrically connected mutually; Signal of telecommunication control loop and dropout disconnection device are electrically connected mutually.
Described dropout disconnection device comprises electromagnetic relay, release, auxiliary tripping spring potential energy device, test button, electromagnetic relay and release are electrically connected mutually, test button and electromagnetic relay are electrically connected mutually, electromagnetic relay and signal of telecommunication control loop are electrically connected mutually, release and the mutual mechanical connection of auxiliary tripping spring potential energy device, auxiliary tripping spring potential energy device and electric each element mutually insulated.
Described test button is a kind of normal open switch of the manual mode operation call through test signal of telecommunication.
Described auxiliary tripping spring potential energy device is a kind of and the spring energy agency control loop mutually insulated.
Described load wire or be a phase, or be heterogeneous.
In sum, the utility model following advantage compared to existing technology:
The anti-low power transmission earth leakage protective device that overwhelms of the present utility model; load circuit passes the electromagnetic induction signal generator; when the load circuit current imbalance; the coil that another group is around on same iron core produces induced electromotive force; this electromotive force is connected into signal of telecommunication control loop; the electromagnetic force that solenoid energising in signal of telecommunication control loop produces drives the dropout disconnection device, realizes cutting off the electrical connection purpose of loaded line and power circuit.Described power directional element is differentiated loaded line active power directivity, when the reverse energy of falling the power transmission, produces signal of telecommunication pulse, and signal of telecommunication control loop is controlled the dropout disconnection device.Described signal of telecommunication control loop utilizes the unidirectional general character of diode and the electric current amplification characteristic of triode,, with signal of telecommunication rectification, amplification, imports the executive component in the dropout disconnection device, forces the action of dropout disconnection device, cuts off its electrical connection.Therefore of the present utility modelly anti-ly lowly overwhelm power transmission earth leakage protective device 1, have creepage protection function and the low power transmission defencive function that overwhelms of anti-user's side;
2, simple in structure, installation rotation convenience;
3, practical, ensure user's side safety and distribution upkeep operation safety;
4, input cost low, produce and promote the use of easily, be with a wide range of applications.
Description of drawings
Fig. 1 is the anti-low power transmission earth leakage protective device functional-block diagram that overwhelms.
Fig. 2 is single-phase electromagnetic induced signal generator schematic diagram.
Fig. 3 is three-phase electromagnetic induced signal generator schematic diagram.
Fig. 4 is the power directional element circuit diagram.
Fig. 5 is single-phase electricity signal controlling loop diagram.
Fig. 6 is three-phase electricity signal controlling loop diagram.
Fig. 7 is dropout disconnection device schematic diagram.
Fig. 8 is the anti-low power transmission earth leakage protective device fundamental diagram that overwhelms.
Embodiment
Below in conjunction with embodiment, the utility model is described in more detail.
Embodiment 1
A kind of anti-hanging down overwhelms the power transmission earth leakage protective device, as shown in Fig. 1-8, comprises electromagnetic induction signal generator, power directional element, signal of telecommunication control loop, dropout disconnection device.Described electromagnetic induction signal generator divides two kinds of single phase poaer supply and three phase mains, and operation principle is identical: while changing magnetic flux in electromagnetic induction signal generator solenoid, the electromagnetic induction signal generator output end has signal of telecommunication output.Described power directional element is a kind of power direction differentiation that has, and derives the integration module of reverse power signal.Described signal of telecommunication control loop is the integrated circuit that the signal code of the signal code of electromagnetic induction signal generator output or power directional element output is carried out rectification, amplification.Described dropout disconnection device is comprised of electromagnetic relay, solenoid, spring energy agency and test button.Described electromagnetic induction signal generator and power directional element side by side and signal of telecommunication control loop mutually be electrically connected; Signal of telecommunication control loop and dropout disconnection device are electrically connected mutually.Described test button is the normal open switch button of generation of forced signal code circuit.
This anti-hanging down while overwhelming the work of power transmission earth leakage protective device:
1, will prevent low overwhelm the power transmission earth leakage protective device and being fixedly installed in user's house lead in point (property right separation), binding post " N " connecting to neutral line, other binding post phase-connecting wires; The mains side circuit is connected to the upper end binding post, and the load-side circuit is connected to the lower end binding post.After energising, examination is by " T " test button 3 times, and switch motion trip all accurately and reliably, should anti-ly hang down to overwhelm the power transmission earth leakage protective device and can come into operation.
When 2, leak current fault appears in load-side, when leakage current reaches 10mA and when above (set point), the anti-low power transmission earth leakage protective device action tripping operation that overwhelms.After the user must find out fault point and rectification, the anti-low power transmission earth leakage protective device that overwhelms that can close, recovered supplying power allocation.
3, power distribution line maintenance has a power failure, and user's side is power autonomous generates power for their own use.At this moment, user's side has counter the delivering to of electric energy to prevent the low power transmission earth leakage protective device that overwhelms; Power directional element determines the electric energy direction, and sends the signal of telecommunication and be transported to signal of telecommunication control loop, forces dropout disconnection device action tripping operation.Anti-the hanging down of can closing after power autonomous isolating overwhelms the power transmission earth leakage protective device, recovers supplying power allocation.
It is same as the prior art that the present embodiment is not stated part.
Claims (8)
1. anti-hanging down overwhelms the power transmission earth leakage protective device; it is characterized in that: comprise electromagnetic induction signal generator, power directional element, signal of telecommunication control loop, dropout disconnection device; the input port of described signal of telecommunication control loop and electromagnetic induction signal generator are electrically connected mutually; and with the power directional element output port, mutually be electrically connected; signal of telecommunication control loop output port and dropout disconnection device are electrically connected mutually, and power directional element input port and loaded line are electrically connected mutually.
2. anti-hanging down according to claim 1 overwhelms the power transmission earth leakage protective device; it is characterized in that: described electromagnetic induction signal generator comprises electromagnet, electromagnetic induction coil; load wire is around on electromagnet; electromagnetic induction coil is wound on same electromagnet, mutually insulated between load wire and electromagnetic induction coil.
3. anti-hanging down according to claim 2 overwhelms the power transmission earth leakage protective device, it is characterized in that: described power directional element comprises current work forward and reversal of identification module, the reverse power control circuit, backward power electrical signal mouth, the power direction identification module adopts the directional power relay technology, meritorious and the reverse active current of forward is utilized the unidirectional general character design circuit of diode, the electrical signal of oppositely gaining merit is connected in signal of telecommunication control loop output port, signal of telecommunication control loop output port and dropout disconnection device are electrically connected mutually, the power directional element input is connected in the load-side terminals and forms mutual electrical connection.
4. anti-hanging down according to claim 3 overwhelms the power transmission earth leakage protective device, and it is characterized in that: described signal of telecommunication control loop comprises signal of telecommunication amplifying device, quiescent current directional control circuit.
5. anti-hanging down according to claim 4 overwhelms the power transmission earth leakage protective device, and it is characterized in that: quiescent current directional control circuit and signal of telecommunication amplifying device are electrically connected mutually; Signal of telecommunication control loop and dropout disconnection device are electrically connected mutually.
According to claim 1 to 5 any one described anti-low power transmission earth leakage protective device that overwhelms; it is characterized in that: described dropout disconnection device comprises electromagnetic relay, release, auxiliary tripping spring potential energy device, test button; electromagnetic relay and release are electrically connected mutually; test button and electromagnetic relay are electrically connected mutually; electromagnetic relay and signal of telecommunication control loop are electrically connected mutually; release and the mutual mechanical connection of auxiliary tripping spring potential energy device, auxiliary tripping spring potential energy device and electric each element mutually insulated.
7. anti-hanging down according to claim 6 overwhelms the power transmission earth leakage protective device, and it is characterized in that: described auxiliary tripping spring potential energy device is a kind of and the spring energy agency control loop mutually insulated.
8. according to claim 7ly anti-low overwhelm the power transmission earth leakage protective device, it is characterized in that: described load wire or be a phase, or be heterogeneous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201669485U CN203301126U (en) | 2013-04-07 | 2013-04-07 | Leakage protector for preventing low voltage inverse power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201669485U CN203301126U (en) | 2013-04-07 | 2013-04-07 | Leakage protector for preventing low voltage inverse power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301126U true CN203301126U (en) | 2013-11-20 |
Family
ID=49577109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201669485U Expired - Lifetime CN203301126U (en) | 2013-04-07 | 2013-04-07 | Leakage protector for preventing low voltage inverse power transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219703A (en) * | 2013-04-07 | 2013-07-24 | 国家电网公司 | Leakage protector for preventing low voltage inverse power transmission |
-
2013
- 2013-04-07 CN CN2013201669485U patent/CN203301126U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219703A (en) * | 2013-04-07 | 2013-07-24 | 国家电网公司 | Leakage protector for preventing low voltage inverse power transmission |
| CN103219703B (en) * | 2013-04-07 | 2015-08-26 | 国家电网公司 | Anti-low voltage inverse power transmission earth leakage protective device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105826063A (en) | Contactless on-load automatic positive and negative voltage regulating tap switch device for three-phase distribution transformer | |
| CN201994717U (en) | Control device for supplying power to breaker control units | |
| CN102148529A (en) | Control device and control method thereof for intelligently supplying power to circuit breaker control unit | |
| CN203536971U (en) | Series connection compensation device for intelligent distribution network | |
| CN202906572U (en) | Intelligent controller of permanent magnet mechanism breaker | |
| CN206685891U (en) | Current limliting earth leakage protective device | |
| CN103762557B (en) | The anti-open-circuit-protection method of current transformer | |
| CN203301126U (en) | Leakage protector for preventing low voltage inverse power transmission | |
| CN205429890U (en) | It goes up switch FTU controller to adapt to net post that joins in marriage that little power supply circuit reclosed | |
| CN103219703B (en) | Anti-low voltage inverse power transmission earth leakage protective device | |
| CN203326551U (en) | Magnetic latching non-stick over-voltage and under-voltage protector | |
| CN104820406A (en) | Small power automatic operation grid-connected power generation system for oil associated gas | |
| CN104466925A (en) | Micro-grid line protection algorithm based on disturbance voltage | |
| CN204290313U (en) | A kind of building DC power supply | |
| CN208479180U (en) | A kind of power circuit and signal circuit protective device | |
| CN107068506A (en) | The anti-power transmission automatic disconnecting device of power distribution network low pressure | |
| CN206806271U (en) | The anti-power transmission automatic disconnecting device of power distribution network low pressure | |
| CN208369218U (en) | A kind of sensitive loads voltage disturbance governing system | |
| CN201937341U (en) | Non-voltage recovery device of remote monitoring type distribution room | |
| CN201699423U (en) | Three-phase power voltage stabilizer with three-phase simultaneous output function and three-single-phase independent output function | |
| CN204330880U (en) | A kind of prepayment meter of on-load on off state measuring ability | |
| CN211046792U (en) | Contactless control system of direct-current 48-volt electromagnetic module | |
| CN204615364U (en) | There is control, protection and the motor intelligent terminal of function for monitoring | |
| CN105098972A (en) | Anti-interference electricity contactor time delay device | |
| CN213402568U (en) | Novel intelligent low-voltage circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131120 Effective date of abandoning: 20150826 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131120 Effective date of abandoning: 20150826 |
|
| RGAV | Abandon patent right to avoid regrant |