CN106532676A - Magnetic induction ground blanking device - Google Patents
Magnetic induction ground blanking device Download PDFInfo
- Publication number
- CN106532676A CN106532676A CN201710010817.0A CN201710010817A CN106532676A CN 106532676 A CN106532676 A CN 106532676A CN 201710010817 A CN201710010817 A CN 201710010817A CN 106532676 A CN106532676 A CN 106532676A
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- CN
- China
- Prior art keywords
- ground
- line
- magnetic induction
- circuit protection
- blanking module
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a magnetic induction ground blanking device. The device includes a client commercial power electric leakage short circuit protection switch, a 1:1 magnetic induction coil, a blanking module and a load electric leakage short circuit protection switch which are connected in sequence; the N line (zero line) is connected to the ground because power grid power supply must adopt a center line grounding mode, and the blanking module is connected to the ground in a zero sequence current grounding mode; and the load electric leakage short circuit protection switch is in line connection with the blanking module, and controls disconnection and connection of the load electric leakage short circuit protection switch through the blanking module. The magnetic induction ground blanking device provided by the invention has the following beneficial effects: while safe and stable power supply of a power grid is guaranteed, according to the characteristic that potential difference between N line (zero line) output and the ground is zero potential after center line grounding, a magnetic induction ground blanking technology can achieve an effect that a potential difference value between AC two-phase and AC three-phase power supply L line (live line) and the ground is smaller than or equal to AC 1V, thereby solving the safety problem of an electric shock when a human body contacts the L line (live line) and the problem of electric leakage between the L line (live line) and the ground.
Description
Technical field
The present invention relates to a kind of protection against electric shock, leakproof power technology, especially civil power power distribution network use a kind of magnetic induction of this technology
Blanker over the ground, can make live wire in civil power power distribution network and ground potential difference less than or equal to AC1V, so as to realize human body with
Live wire will not get an electric shock when contacting and come to harm, and on the earth, any object contact live wire does not occur electric leakage.
Background technology
Since the development and application of electric power finds electromagnetic induction from the mankind in 1831, it has been human civilization and send out to electric power now
Open up indispensable important conversion energy presentation mode.Domestic electrical since the Shanghai First electrical power generators in 1882, directly
To after the foundation of new China, the electric power network of China is just able to the development advanced by leaps and bounds, nuclear energy, waterpower, wind-force, firepower,
The fields such as solar energy, tide energy achieve current achievement highly visible.And with energy-saving and environmental protection, the effective supply mode of safety
Huge numbers of families are sent into, while providing endless convenient for people's people's livelihood product, life, is national economy, the realization of Chinese dream, is served
Irreplaceable guaranteeing role.However, because electric power network is quite remote to huge numbers of families' tail end line from generating, conveying, distribution
Away from this process, for the balance in avoiding effects of lightning and guarantee circuit between voltage, generator, power transformer are all
Employ neutral grounded mode, thus make the earth and each phase voltage all define loop, as long as therefore big ground arbitrfary point
There is contact produce electromotive force with L lines (live wire), electric leakage forms current loop, the thing such as electric wire and ground sparking, electric shock easily occurs
Therefore.In existing safeguard measure, each distribution system and client have all loaded onto earth leakage protective device, but earth leakage protective device must be produced
Raw electric leakage forms the electric current just meeting action open circuit of 220V or 380V 30mA, and is affected by electrical network electricity consumption feedback current etc., open circuit
And earth leakage protective reaction is unstable, not in time, easily causes potential safety hazard.
The content of the invention
The problem to be solved in the present invention is to provide a kind of effective, energy-saving and environmental protection, the magnetic strength of safer innovations
Can should effectively solve electrical network client L line (live wire) Leaked Current of Line to Ground formation current loop generation electromotive force by hidden technology over the ground
Problem.
To solve the above problems, the invention provides a kind of magnetic induction blanker over the ground, including the client being sequentially connected
End civil power leak electricity short-circuit protection switch, blanking module, load leak electricity short-circuit protection switch, the client civil power input coil with
Connect N lines (zero line) connection of the earth by neutral grounded mode, the output winding of the magnetic induction loop is not connected with the earth,
The blanking module is connected with the earth by zero-sequence current mode, described to load leak electricity short-circuit protection switch and blanking module circuitry
Connection, is controlled the disconnection of load leak electricity short-circuit protection switch and is connected by blanking module；
Further, any two line of the output winding of the magnetic induction loop and the earth between potential difference less than civil power with
Potential difference between the earth, the current potential Jing after blanking resume module over the ground, between output L lines (live wire) of output winding and the earth
Value is less than or equal to AC1V；
Further, when between output winding L lines (live wire) and the earth, voltage change rises, i.e., risen to by AC1V
AC36V, now over the ground in blanking module intelligent IC control action load leak electricity short-circuit protection switch, bright light honeybee after disconnecting consumers
Ring alarm, and raised voltage open circuit protection value is less than or equal to safe voltage AC36V, action current is less than 20mA (country's peaces
Full normal voltage is AC36V)；
Further, the blanking module open circuit protection operation voltage with electric current than the leak electricity short-circuit in traditional power supply mode
Protection AC220V (30mA) it is safer, and when live wire contact with the object or person body on the earth arbitrfary point will not be formed leak electricity or
Electric shock；
Further, the blanking module is used for stablizing for control voltage, when such as big load equipment starts, reduces to civil power
The impact of pressure system；
Further, the blanking module can be also used for obstructing change action, and device increases impedance, makes protection device more
Easily coordinate；
Further, the blanking module can be also used for filtering Anti-Jamming, after this device, can prevent one
Subharmonic loop transfer；
Further, the blanking module can be also used for suppressing output current to act on over the ground, when appointing for this device output
With mains system without any effective loop when meaning L lines (live wire) occurs to be grounded, and electric shock will not occur；
Further, the blanking module can be also used for reducing short action electric current, when this device output current occurs
When short-circuit, system short-circuit electric current limited, makes short-circuit protection be more easy to work；
Further, the blanking module can be also used for civil power and the earth blocking effect, make output load current more
Safety；
Further, the blanking module can be also used for reducing leak electricity short-circuit protection switch action open circuit voltage electric current,
Sphere of action value is decreased to voltage (AC1V～AC36V) action breaking current (less than 20mA).
The invention has the beneficial effects as follows：There is provided under electricity guarantee, according to neutral grounded rear N lines in electric power network safety and stability
(zero line) output is the characteristic of zero potential, and hidden technology can realize two-phase and three phase supply load end L lines (fire over the ground for magnetic induction
Line) AC1V is less than or equal to the magnitude of voltage of the earth, so that live wire is contacted with the object on the earth arbitrfary point do not strike sparks leakproof,
Human contact will not form electric shock.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, accompanying drawings below is briefly described, aobvious and easy
Insight, drawings in the following description are only some embodiments of the present invention；
Wherein：
Fig. 1 is the operating diagram of the single-phase AC220V output loadings of the present invention；
Fig. 2 is the operating diagram of the three-phase AC380V output loadings of the present invention；
Fig. 3 is the single-phase AC220V potential differences schematic diagram of the present invention；
Fig. 4 is the three-phase AC380V potential difference schematic diagrames of the present invention；
Wherein：1:1 magnetic induction loop is with civil power input circuit as primary coil, magnetic induction loop of the output loop as secondary coil
It is defined.
1：Client civil power leak electricity short-circuit protection switch, 2：Magnetic induction loop, 3：Magnetic core, 4：Blanking module, 5：Load electric leakage
Protective switch of the short circuit, 001：Magnetic induction blanker over the ground；
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refering to Fig. 1, Fig. 2, Fig. 3, Fig. 4, according to function to each circuit module be embodied as and installation and application enters
Row is illustrated：
(1) a kind of magnetic induction over the ground blanker in utility grid be single-phase AC220V output loadings work illustrate
Figure.
As shown in Figure 1：The L lines (live wire) of civil power AC220V, N lines (zero line) are by 1:1 magnetic induction loop isolation and amplifier is to right
Output loading again after ground blanking module safety protection.
(2) blanker is illustrated for the work of three-phase AC380V output loadings in utility grid over the ground for a kind of magnetic induction
Figure.
As shown in Figure 2：Three L lines (live wire) of civil power AC380V are by three 1:1 line of magnetic induction loop three (live wire) point
Three 1 are not connect:1 magnetic induction loop primary coil head, merging connects N lines (zero line) to tail entirely, and isolation and amplifier is to blanking module safety over the ground
Output loading again after protection.
(3) blanker is above earth potential differential when single-phase AC220V works in utility grid over the ground for a kind of magnetic induction
It is intended to.
As shown in Figure 3：Civil power L lines (live wire) above earth potential is AC220V, right Jing after a kind of magnetic induction over the ground blanker
Ground potential is AC1V.
I.e.：Civil power AC220V L lines (live wire) in (AC220V) electric leakage and electric shock can be hurted sb.'s feelings over the ground, and a kind of magnetic induction pair
(AC1V's L lines (live wire) of ground blanker load output) will not leak electricity and electric shock is hurted sb.'s feelings over the ground.
(4) blanker is above earth potential differential during three-phase AC380V work in utility grid over the ground for a kind of magnetic induction
It is intended to.
Such as Fig. 3, shown in Fig. 4：Each L lines (live wire) above earth potential of civil power is AC220V, and blanking is filled a kind of magnetic induction of Jing over the ground
Above earth potential is postponed for AC1V.
I.e.：Civil power AC380V in powering each L lines (live wire) (AC220V) electric leakage and electric shock can hurt sb.'s feelings over the ground, a kind of and magnetic strength
Should each L lines (live wire) of blanker load output over the ground (AC1V) will not leak electricity and electric shock is hurted sb.'s feelings over the ground.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (1)
1. a kind of magnetic induction blanker over the ground, it is characterised in that：Including the client civil power leak electricity short-circuit protection being sequentially connected
Switch, magnetic induction loop, blanking module, load leak electricity short-circuit protection switch, the N lines are powered due to electrical network and must be connect using center line
Ground mode is connected with the earth, and the blanking module is connected with the earth by zero-sequence current earthing mode；The load electric leakage is short
Road protection switch is connected with blanking module circuitry, controls disconnection and the company of load leak electricity short-circuit protection switch by blanking module
Connect, input civil power is formed with output loading by magnetic induction loop and isolate, when in voltage change between output winding L lines and the earth
When rising, now intelligent IC analysis voltage change control action load leak electricity short-circuit protection switch over the ground in blanking module, disconnects
Bright light buzzing alarm after load, and raised voltage value open circuit protection is less than or equal to load electric leakage described in safe voltage AC36V
Protective switch of the short circuit is connected with blanking module circuitry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010817.0A CN106532676A (en) | 2017-01-06 | 2017-01-06 | Magnetic induction ground blanking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010817.0A CN106532676A (en) | 2017-01-06 | 2017-01-06 | Magnetic induction ground blanking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106532676A true CN106532676A (en) | 2017-03-22 |
Family
ID=58335229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010817.0A Pending CN106532676A (en) | 2017-01-06 | 2017-01-06 | Magnetic induction ground blanking device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106532676A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138736Y (en) * | 2007-12-26 | 2008-10-22 | 利安电气国际有限公司 | Residual current protecting equipment added with zero sequence current monitoring apparatus |
| CN102024364A (en) * | 2010-12-31 | 2011-04-20 | 郑州万特电气有限公司 | Simulated training system |
| US20130335863A1 (en) * | 2011-03-02 | 2013-12-19 | Abb As | Protecting An Operation Control Unit Connected To An Electric Machine Via A Long Cable |
| CN104678260A (en) * | 2015-03-25 | 2015-06-03 | 南京南瑞继保电气有限公司 | System and method for single-phase grounding line selection of small current grounding system |
| CN105098771A (en) * | 2015-08-05 | 2015-11-25 | 国网浙江省电力公司湖州供电公司 | Power consumer demarcation load switch |
-
2017
- 2017-01-06 CN CN201710010817.0A patent/CN106532676A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138736Y (en) * | 2007-12-26 | 2008-10-22 | 利安电气国际有限公司 | Residual current protecting equipment added with zero sequence current monitoring apparatus |
| CN102024364A (en) * | 2010-12-31 | 2011-04-20 | 郑州万特电气有限公司 | Simulated training system |
| US20130335863A1 (en) * | 2011-03-02 | 2013-12-19 | Abb As | Protecting An Operation Control Unit Connected To An Electric Machine Via A Long Cable |
| CN104678260A (en) * | 2015-03-25 | 2015-06-03 | 南京南瑞继保电气有限公司 | System and method for single-phase grounding line selection of small current grounding system |
| CN105098771A (en) * | 2015-08-05 | 2015-11-25 | 国网浙江省电力公司湖州供电公司 | Power consumer demarcation load switch |
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Application publication date: 20170322 |
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