CN206804803U - A kind of continuous insulation detecting system - Google Patents
A kind of continuous insulation detecting system Download PDFInfo
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- CN206804803U CN206804803U CN201720434748.1U CN201720434748U CN206804803U CN 206804803 U CN206804803 U CN 206804803U CN 201720434748 U CN201720434748 U CN 201720434748U CN 206804803 U CN206804803 U CN 206804803U
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- insulation
- isolating transformer
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Abstract
The utility model discloses a kind of continuous insulation detecting system, including the isolating transformer installed in power supply circuit, the earthing of casing of the isolating transformer；Seal and some AC load equipment are connected on the circuit powered by isolating transformer, CPE, PE end of seal are grounded respectively；Insulation against ground resistance is equipped with the circuit powered by isolating transformer and in AC load equipment.Its detection method is,（1）The isolating transformer of the earthing of casing is installed, insulation detection device is installed；2）CPE, PE end of insulation detection device are grounded respectively；3）When circuit naked failure, whole power system may proceed to normal work；4）When there is insulation against ground failure on circuit, failure is shown.The utility model can the measurement different insulative impedance of continuing property, and power system is not interfered, when an insulation fault occurs in network load, can precisely detect the very first time, power supply will not be caused to be spaced apart tripping operation, ensure the continuity powered.
Description
Technical field
It the utility model is related to technical field of insulation detection, in particular to a kind of continuous insulation detecting system.
Background technology
With the extensive use of electric power, for electrical equipment in every profession and trade with popularization, it is more next that people contact the electric time
It is more.If electrical equipment installation is incorrect, use is unreasonable, repairs not in time, if especially electrician lacks
Necessary electrical safety knowledge is careless and inadvertent for the moment, not only results in waste of energy, and electrical hazard can occur, and jeopardizes
Personal safety, heavy losses are led to country and society.In fact, in the places such as mechanical industry, office block, public building
Still there is a large amount of electrically dangerous phenomenons, so that electrical hazard turns into triggers personal injury, blast, event of fire
Major reason.Therefore, electrical safety has been increasingly subject to the concern and attention of people.Electrical safety mainly includes personal safety and set
Standby two aspects of safety.Personal safety refers to the personal security during work and electrical equipment operation use is engaged in；Equipment is pacified
All referring to electrical equipment and about other equipment, the safety built.Electrical hazard is frequently not that single reason causes, in order to do well
Electrical safety works, it is necessary to using many measures such as the technology that includes and organization and administration.With the development of science and technology America and Europe etc. sends out
Put into effect successively up to country and China and improve multinomial National Electrical safety standard and code, and actively studied and constantly release advanced electricity
Gas safe practice.A series of this behave, it is particularly significant in the safety of protection labourer and the secure context of protection electrical equipment.
The existing continuous detection technique of insulation is detected by signalling, i.e. the electricity for no grounding transformer
Force system, a switch is connected respectively in every line of three-phase, is grounded by switch controlling signal source device.Such as when power system is sent out
During raw B phase earth faults, system A phases switch closure and allow source ground, and signal code is then passed through the outlet of B phase faults and passed through
The earth returns to signal source, with this failure judgement point.
Although signal injection method is that electrician's investigation can be allowed to arrive failure, very time-consuming, and it is maximum
Shortcoming is signal to be injected into power system, and this will cause interference to a certain extent to network system, it is impossible to ensure whole
The stability of individual power system.And a kind of insulation detecting method based on low frequency pulse signal is only used for straight-flow system, field
It is limited in electric automobile insulation monitoring.
Utility model content
The purpose of this utility model be to provide it is a kind of do not influenceing power system normal operation in principle, utilize isolation
The measurement signal continuous over the ground of power supply and an insulation monitoring and warning device, monitor the insulation fault of different impedances on loaded line on-line
Situation, and failure is shown, whole AC electric power systems load protection can equally be played in terms of the personal safety to staff
The Insulation Inspection System of protective effect.
The utility model is achieved through the following technical solutions：A kind of continuous insulation detecting system, including installed in power supply electricity
The isolating transformer on road, the earthing of casing of the isolating transformer；It is connected to absolutely on the circuit powered by isolating transformer
Edge device and some AC load equipment, CPE, PE end of the seal are grounded respectively；It is described to be supplied by isolating transformer
Insulation against ground resistance is equipped with the circuit of electricity and in AC load equipment.
In order to which the utility model is better achieved, further, the power supply circuit is powered for three phase mains.
In order to which the utility model is better achieved, further, the isolating transformer is SG three-phase transformers.
In order to which the utility model is better achieved, further, the power supply circuit is powered for single phase poaer supply.
In order to which the utility model is better achieved, further, the isolating transformer is DG single-phase transformers.
The method for being carried out Insulation monitoring to power system using the continuous insulation detecting system, is comprised the following steps：
（1）Isolating transformer is installed in power system, makes the earthing of casing of isolating transformer, and installed on load circuit
Insulation detection device；
（2）CPE, PE end of insulation detection device are grounded respectively, CPE, PE end of insulation detection device can be sent continuously
Continuous signal, detection insulation detection device and isolating transformer shell whether proper grounding；
（3）When circuit naked failure, caused signal is isolated device over the ground, can not form loop, whole electric power
System may proceed to normal work；
（4）When there is insulation against ground failure on circuit, sense channel that the signal of transmission can be returned on device by trouble point,
A measuring loop is formed, shows failure.
In order to which method of the present utility model is better achieved, further, the step（1）Installed in power system every
It is 1 from transformer:1 isolating transformer.
The utility model compared with prior art, has advantages below and beneficial effect：
（1）The utility model can the measurement different insulative impedance of continuing property, and power system is not interfered, when power network is born
When setting out an existing insulation fault, it can precisely detect the very first time, power supply will not be caused to be spaced apart tripping operation, ensure the continuous of power supply
Property；
（2）The utility model is not influenceing power system normal operation in principle, is insulated using insulating power supply and one
The measurement signal continuous over the ground of monitoring device, monitors the insulation fault situation of different impedances on loaded line on-line, and shows event
Barrier.Not only can be to whole AC electric power systems load protection, and protection is equally played in terms of the personal safety of staff
Effect；
（3）The utility model can greatly improve the security of power system insulation detection, suitable wide popularization and application.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, other under the utility model
Feature, objects and advantages will become apparent：
Fig. 1 is the utility model circuit structure in single phase poaer supply；
Fig. 2 is the utility model circuit structure in three phase mains.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that used in specification of the present utility model
Wording " comprising " refer to the feature, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of
Or addition one or more other features, integer, step, operation, element, component and/or their groups.It should be understood that work as
We claim element to be " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, Huo Zheye
There may be intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or wireless coupling.Here
The wording "and/or" used includes whole or any cell and all combinations of one or more associated list items.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology
Term and scientific terminology), there is the general understanding identical meaning with the those of ordinary skill in the utility model art.
It should also be understood that those terms defined in such as general dictionary, it should be understood that have upper and lower with prior art
The consistent meaning of meaning in text, and unless by specific definitions as here, idealization or overly formal otherwise will not be used
Implication explain.
Embodiment 1：
The circuit structure of the present embodiment, as shown in figure 1, including the single-phase transformations of DG installed in single phase poaer supply power supply circuit
Device, the earthing of casing of the DG single-phase transformers；Be connected on the circuit powered by DG single-phase transformers seal and
Some AC load equipment, CPE, PE end of the seal are grounded respectively；The electricity powered by DG single-phase transformers
On road and it is equipped with insulation against ground resistance in AC load equipment.
Specific detection method comprises the following steps：
（1）1 is installed in power system：1DG individual event transformers, make the earthing of casing of DG individual event transformers, and in load electricity
Insulation detection device is installed on road；
（2）CPE, PE end of insulation detection device are grounded respectively, CPE, PE end of insulation detection device can be sent continuously
Continuous signal, detection insulation detection device and DG individual events transformer case whether proper grounding；
（3）When circuit naked failure, caused signal is isolated device over the ground, can not form loop, whole electric power
System may proceed to normal work；
（4）When there is insulation against ground failure on circuit, sense channel that the signal of transmission can be returned on device by trouble point,
A measuring loop is formed, shows failure.
Embodiment 2：
The circuit structure of the present embodiment, as shown in Fig. 2 including tri- transformations of SG installed in three phase mains power supply circuit
Device, the earthing of casing of tri- transformers of SG；Be connected on the circuit by tri- transformer-supplieds of SG seal and
Some AC load equipment, CPE, PE end of the seal are grounded respectively；The electricity by tri- transformer-supplieds of SG
On road and it is equipped with insulation against ground resistance in AC load equipment.
Specific detection method comprises the following steps：
（1）1 is installed in power system：1 tri- transformers of SG, make the earthing of casing of tri- transformers of SG, and loading
Insulation detection device is installed on circuit；
（2）CPE, PE end of insulation detection device are grounded respectively, CPE, PE end of insulation detection device can be sent continuously
Continuous signal, detection insulation detection device and tri- transformer cases of SG whether proper grounding；
（3）When circuit naked failure, caused signal is isolated device over the ground, can not form loop, whole electric power
System may proceed to normal work；
（4）When there is insulation against ground failure on circuit, sense channel that the signal of transmission can be returned on device by trouble point,
A measuring loop is formed, shows failure.
It is understood that become according to the Insulation Inspection System structure of the utility model one embodiment, such as with isolation
The operation principle and the course of work of the part such as depressor and insulation against ground resistance are all prior arts, and are those skilled in the art
It is known, just no longer it is described in detail here.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that：
In the case where not departing from principle and objective of the present utility model a variety of change, modification, replacement and modification can be carried out to these embodiments,
The scope of the utility model is limited by claim and its equivalent.
Claims (5)
- A kind of 1. continuous insulation detecting system, it is characterised in that including the isolating transformer installed in power supply circuit, the isolation The earthing of casing of transformer；Seal is connected on the circuit powered by isolating transformer and some AC loads are set Standby, CPE, PE end of the seal are grounded respectively；Set on the circuit powered by isolating transformer with AC load It is standby to be above equipped with insulation against ground resistance.
- 2. a kind of continuous insulation detecting system according to claim 1, it is characterised in that the power supply circuit is three-phase electricity Source powers.
- 3. a kind of continuous insulation detecting system according to claim 2, it is characterised in that the isolating transformer is SG tri- Phase transformer.
- 4. a kind of continuous insulation detecting system according to claim 1, it is characterised in that the power supply circuit is single-phase electricity Source powers.
- 5. a kind of continuous insulation detecting system according to claim 4, it is characterised in that the isolating transformer is that DG is mono- Phase transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720434748.1U CN206804803U (en) | 2017-04-24 | 2017-04-24 | A kind of continuous insulation detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720434748.1U CN206804803U (en) | 2017-04-24 | 2017-04-24 | A kind of continuous insulation detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206804803U true CN206804803U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720434748.1U Expired - Fee Related CN206804803U (en) | 2017-04-24 | 2017-04-24 | A kind of continuous insulation detecting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206804803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896305A (en) * | 2017-04-24 | 2017-06-27 | 绵阳莫仕科技有限公司 | Continuous insulation detecting system and the method that Insulation monitoring is carried out to power system |
-
2017
- 2017-04-24 CN CN201720434748.1U patent/CN206804803U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896305A (en) * | 2017-04-24 | 2017-06-27 | 绵阳莫仕科技有限公司 | Continuous insulation detecting system and the method that Insulation monitoring is carried out to power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20200424 |