CN106229943A - Intelligent selection current transformer winding secondary side open-circuit protector circuit - Google Patents
Intelligent selection current transformer winding secondary side open-circuit protector circuit Download PDFInfo
- Publication number
- CN106229943A CN106229943A CN201610548729.1A CN201610548729A CN106229943A CN 106229943 A CN106229943 A CN 106229943A CN 201610548729 A CN201610548729 A CN 201610548729A CN 106229943 A CN106229943 A CN 106229943A
- Authority
- CN
- China
- Prior art keywords
- circuit
- protector
- secondary side
- measuring unit
- open
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- 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
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
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- Emergency Protection Circuit Devices (AREA)
Abstract
Intelligent selection current transformer winding secondary side open-circuit protector circuit, it relates to electrical power distribution switchgear technical field.It is characterized in that it comprise open-circuit protector, measuring unit winding circuit, protected location are connected with open-circuit protector around resistance circuit with protected location respectively around resistance circuit, measuring unit winding circuit.The present invention has simple in construction, easy to operate, effectively can inquire about circuit and the feature such as maintenance.
Description
Technical field
The present invention relates to electrical power distribution switchgear technical field, be specifically related to intelligent selection current transformer winding secondary
Side open-circuit protector circuit.
Background technology
Increasingly mature along with electric automatization, various protection type components and parts emerge in an endless stream, and in power system, electric current is mutual
Sensor plays and big electric current is reduced into small area analysis carries out protecting, measuring, but if electric current in equipment long-play, or transport
Transformer secondary side open circuit will cause secondary side voltage to raise, and badly influences protection, even injures personal safety as well as the property safety.
In the most existing product, CT open-circuit protector has dumb, if single phasing protection loop current open circuit, this protector meeting
By varistor get through and the earth connect, make transformer secondary side formed loop, but simultaneously also by the defencive function of this phase
Shielding, the protection measure and control unit being connected with this phase does not has effect.
Summary of the invention
It is an object of the invention to provide intelligent selection current transformer winding secondary side open-circuit protector circuit, it has knot
Structure is simple, easy to operate, effectively can inquire about circuit and the feature such as maintenance.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: it comprises open circuit and protects
Protect device, measuring unit winding circuit, protected location around resistance circuit, measuring unit winding circuit and protected location around resistance circuit respectively
It is connected with open-circuit protector.
Described measuring unit winding circuit comprises three windings and measuring unit, and three winding parallels, three around component
It is not connected with measuring unit.
Described protected location comprises three windings and protected location around resistance circuit, and three winding parallels, three around component
It is not connected with protected location.
Described open-circuit protector comprises intelligent monitor, varistor, and intelligent monitor has six delivery outlets, respectively
Being connected around six windings of resistance circuit with measuring unit winding circuit and protected location, varistor is connected with intelligent monitor.
The present invention has the advantage that:
There is intelligent selection protection type or measurement type, if protected level open circuit intelligent monitor can be according to the polarity of input analog amount
Automatically make protective loop normally work the input string such as protective loop measuring level, prevent unnecessary electric misoperation, and protect
Protect inefficacy；Simultaneously send again switching value alarm signal, tell the winding open circuit that this transformer of backstage is specifically corresponding, convenient inquiry and
Maintenance, is allowed to fix a breakdown rapidly.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
With reference to Fig. 1, it comprises open-circuit protector, measuring unit winding circuit, protected location around resistance circuit, measuring unit around
Group circuit is connected with open-circuit protector around resistance circuit respectively with protected location.
Described measuring unit winding circuit comprises three windings and measuring unit, and three winding parallels, three around component
It is not connected with measuring unit.
Described protected location comprises three windings and protected location around resistance circuit, and three winding parallels, three around component
It is not connected with protected location.
Described open-circuit protector comprises intelligent monitor, varistor, and intelligent monitor has six delivery outlets, respectively
Being connected around six windings of resistance circuit with measuring unit winding circuit and protected location, varistor is connected with intelligent monitor.
Claims (4)
1. intelligent selection current transformer winding secondary side open-circuit protector circuit, it is characterised in that it comprise open-circuit protector,
Measuring unit winding circuit, protected location around resistance circuit, measuring unit winding circuit and protected location around resistance circuit respectively with open
Road protector is connected.
Intelligent selection current transformer winding secondary side open-circuit protector circuit the most according to claim 1, its feature exists
Comprise three windings and measuring unit in described measuring unit winding circuit, three winding parallels, three windings respectively with survey
Amount unit is connected.
Intelligent selection current transformer winding secondary side open-circuit protector circuit the most according to claim 1, its feature exists
Comprise three windings and protected location in described protected location around resistance circuit, three winding parallels, three windings respectively with guarantor
Protect unit to be connected.
Intelligent selection current transformer winding secondary side open-circuit protector circuit the most according to claim 1, its feature exists
Comprise intelligent monitor, varistor in open-circuit protector, intelligent monitor have six delivery outlets, respectively with measuring unit around
Group circuit is connected around six windings of resistance circuit with protected location, and varistor is connected with intelligent monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548729.1A CN106229943A (en) | 2016-07-13 | 2016-07-13 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548729.1A CN106229943A (en) | 2016-07-13 | 2016-07-13 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106229943A true CN106229943A (en) | 2016-12-14 |
Family
ID=57520330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610548729.1A Withdrawn CN106229943A (en) | 2016-07-13 | 2016-07-13 | Intelligent selection current transformer winding secondary side open-circuit protector circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106229943A (en) |
-
2016
- 2016-07-13 CN CN201610548729.1A patent/CN106229943A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161214 |
|
| WW01 | Invention patent application withdrawn after publication |