CN107069648B - Earth leakage protecting method - Google Patents
Earth leakage protecting method Download PDFInfo
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- CN107069648B CN107069648B CN201710177362.1A CN201710177362A CN107069648B CN 107069648 B CN107069648 B CN 107069648B CN 201710177362 A CN201710177362 A CN 201710177362A CN 107069648 B CN107069648 B CN 107069648B
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- leakage
- earth leakage
- power supply
- electric leakage
- earth
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000004224 protection Effects 0.000 claims abstract description 13
- 230000009979 protective mechanism Effects 0.000 claims abstract description 11
- 238000011835 investigation Methods 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/027—Details with automatic disconnection after a predetermined time
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of earth leakage protecting method, step S1, whether user setting concrete trigger condition and inspection leakage switch are opened, and leakage switch opening thens follow the steps S2, and leakage switch closing then terminates entire earth leakage protective process；Step S2, controlling terminal DCU poll detection of electrical leakage module, and the electric leakage value of information is compared calculating with earth leakage protective threshold values set by step S1；Step S3 protects process according to concrete trigger condition starting-up later time, and record electric leakage occurrence log when triggering earth leakage protective threshold values；Step S4, user check the circuit leaked electricity by checking electric leakage occurrence log；Earth leakage protecting method of the present invention is handled by controlling terminal DCU poll detection of electrical leakage module and to circuit electric leakage information; then power protection movement is executed; user is by checking electric leakage occurrence log; exclude electric leakage more precisely more convenient; loss caused by investigation electric leakage is reduced, equipment and personal safety are protected.
Description
Technical field
The present invention relates to power control technology fields, and in particular to a kind of earth leakage protecting method.
Background technique
Currently, with the rapid development of electric utility, safety utilization of electric power be can not be ignored.In daily life, because equipment is not using
When or line electrical leakage caused by accident happen occasionally.It prevents electric leakage from causing personal electric shock, and sets power supply because of ground fault
Standby damage has become the task of top priority.When leaking electricity, positioning and detection to leakage point of electricity be it is crucial, tradition positioning according to arranging one by one
The method looked into, the time is long, low efficiency.Drain conditions less serious case will cause the stop work and production of unit certain time, and severe one can give enterprise
Bring certain economic loss.
Summary of the invention
In view of this, the present invention proposes a kind of earth leakage protecting method in order to solve the above problem in the prior art, make to leak
Electricity investigation is more precisely more convenient, reduces loss caused by investigation electric leakage, protects equipment and personal safety.
The present invention is solved the above problems by following technological means:
A kind of earth leakage protecting method, which comprises the steps of:
Step S1, the earth leakage protective concrete trigger condition and inspection leakage switch of user setting electric-leakage detection circuit are
No opening, leakage switch opening then follow the steps S2, and leakage switch closing then terminates entire earth leakage protective process；
Step S2, the controlling terminal DCU poll detection of electrical leakage module of the electric-leakage detection circuit, and the electric leakage that will test
The value of information is compared calculating with earth leakage protective threshold values set by step S1；
Step S3 is protected when triggering earth leakage protective threshold values according to concrete trigger condition starting-up later time set by step S1
Process is protected, and records electric leakage occurrence log information；
Step S4, user carry out problem by checking the electric leakage occurrence log information of step S3, to the circuit leaked electricity
Investigation.
Further, earth leakage protective concrete trigger condition described in step S1 includes believing with detection of electrical leakage module channels
The delay time of breath, earth leakage protective threshold values, leakage switch, power supply switching, power supply switching；
The detection of electrical leakage module channels information is the current information of multiple sampling channels of detection of electrical leakage module；
The earth leakage protective threshold values is to judge whether circuit occurs the criteria threshold of drain conditions, for whether determining circuit
Drain conditions occur, different threshold values is arranged according to the size of load for different circuit；
The power supply switching is circuit switching, for cut-off loop power supply after circuit is leaked electricity, when certain special feelings
Electric leakage occurs under condition cannot also cut off the power；
The power supply switching delay time is that the delay of power supply switching is disconnected after detection of electrical leakage module detects generation electric leakage information
The time opened when leaking electricity, cannot cut off the power at once, set to the circuit leaked electricity for guaranteeing circuit safety
It cuts off the power after the delay time set.
Further, loop protection process described in step S3 is further comprising the steps of:
Step S31, judges whether the electric leakage value of information is greater than the earth leakage protective threshold values and then holds if the judgment is Yes
Row step S32 is then repeated if the judgment is No and is executed step S2；
The power supply switching of step S32, starting-up later time execute earth leakage protective process, then execute step S33；
Step S33, controlling terminal DCU continue to be polled detection of electrical leakage module, then execute step S34；
Step S34, then judge whether the electric leakage value of information is less than the earth leakage protective threshold values, it is executed if being judged as YES
Step S35 then repeats step S33 if the judgment is No；
Step S35, record electric leakage restores log information, and terminates entire loop protection procedure Procedure.
Further, it is as follows to execute earth leakage protective process for starting-up later time power supply switching described in step S32:
Step S321, judges whether power supply switching is opened, and thens follow the steps S322 if being judged as YES, if being judged as otherwise straight
It connects and executes step S323 and do not close power supply output；
Step S322, after the power supply switching delay time, the power supply for closing circuit is exported to protect in the circuit
Power supply；
Step S323, record electric leakage occurrence log information simultaneously keep ring current to export.
Compared with prior art, earth leakage protecting method of the present invention passes through controlling terminal DCU poll detection of electrical leakage module and right
Circuit electric leakage information is handled, and power protection movement is then executed, and user makes to leak electricity by checking electric leakage occurrence log information
It excludes more precisely to be more convenient, reduces loss caused by investigation electric leakage, while protecting equipment and personal safety.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of electric-leakage detection circuit of the present invention；
Fig. 2 is the work flow diagram of earth leakage protecting method of the present invention；
Fig. 3 is the work flow diagram of loop protection process described in step S3 of the invention；
Fig. 4 is the workflow that startup power supply switching function described in step S32 of the invention executes earth leakage protective process
Figure.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with attached drawing and specifically
Embodiment technical solution of the present invention is described in detail.It should be pointed out that described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment
As shown in Figure 1, a kind of electric-leakage detection circuit, including controlling terminal DCU, centrally connected power source, at least one detection of electrical leakage
Module, at least one circuit, centrally connected power source are electrically connected with each circuit respectively, and each circuit is electrically connected with a detection of electrical leakage module
It connects, controlling terminal DCU is electrically connected with each detection of electrical leakage module respectively, and centrally connected power source is electrically connected with controlling terminal DCU again；
The controlling terminal DCU is used to be arranged the electric leakage value of information of electric leakage acquisition detection of electrical leakage module, when triggering electric leakage valve
When value, the electric leakage of record circuit corresponding points occurs information and closes the circuit leaked electricity if having set earth leakage protective
Output；
The centrally connected power source is used to provide power supply to each circuit, controlling terminal DCU, each detection of electrical leakage module；
The circuit is used to provide power supply for the load of each branch；
The detection of electrical leakage module is for measure loop electric leakage information and the information that will leak electricity changes into controlling terminal DCU and can read
The information taken.
Based on the electric-leakage detection circuit, the present invention proposes a kind of earth leakage protecting method:
As shown in Fig. 2, the earth leakage protecting method, includes the following steps:
Step S1, user carry out earth leakage protective concrete trigger condition on the protection interface that controlling terminal DCU leaks electricity
Setting, concrete trigger condition include that the corresponding detection of electrical leakage module channels information in circuit, earth leakage protective threshold values (are accurate to decimal point
Two afterwards), leakage switch, power supply switching, power supply switching delay time (being accurate to millisecond), and check leakage switch whether
It opens, leakage switch opening thens follow the steps S2, and leakage switch closing then terminates entire earth leakage protective process；
Step S2, in the case where leakage switch is opened, the corresponding detection of electrical leakage module acquisition circuit output in each circuit,
The information of voltage that can be accurately detected 2 significant digits is converted to, and is compared meter with the earth leakage protective threshold values of setting
It calculates.The information of voltage (the electric leakage information returned) that controlling terminal DCU system poll detection detection of electrical leakage module detects, and with
The earth leakage protective threshold values of setting is compared calculating；
Step S3 protects circuit according to setting, and record log when triggering earth leakage protective threshold values；
Step S4, user carry out problem investigation by checking the electric leakage log information of step S3, to the circuit leaked electricity.
As shown in figure 3, loop protection process described in step S3 is further comprising the steps of:
Step S31, judges whether the electric leakage value of information is greater than the earth leakage protective threshold values and then holds if the judgment is Yes
Row step S32 is then repeated if the judgment is No and is executed step S2；
The power supply switching of step S32, starting-up later time execute earth leakage protective process, then execute step S33；
Step S33, controlling terminal DCU continue to be polled detection of electrical leakage module, then execute step S34；
Step S34, then judge whether the electric leakage value of information is less than the earth leakage protective threshold values, it is executed if being judged as YES
Step S35 then repeats step S33 if the judgment is No；
Step S35, record electric leakage restores log information, and terminates entire loop protection process.
As shown in figure 4, the earth leakage protective process of the execution of startup power supply switching function described in step S32 is as follows:
Step S321, judges whether power supply switching is opened, and thens follow the steps S322 if being judged as YES, if being judged as otherwise straight
It connects and executes step S323 and be not related to the output of loop circuit power supply；
Step S322, the circuit after the power supply switching delay time, close the power supply output in corresponding circuit with
Protective loop；
Step S323, record electric leakage occurrence log information simultaneously keep ring current to export.
Earth leakage protecting method of the present invention can by checking that log determines time for leaking electricity and specific circuit information,
The output for simultaneously closing off circuit, the equipment in circuit that electric leakage occurs plays defencive function, while reducing to entire supply rings
The workload that leaky is checked in border provides help to the thorough leakage function that solves, in shortening working hour, improves efficiency, and existing
Technology is compared, and cost input reduces 30% or more.
Believe in addition, earth leakage protecting method of the present invention passes through controlling terminal DCU poll detection of electrical leakage module and leaks electricity to circuit
Breath is handled, and power protection movement is then executed, and user keeps electric leakage discharge more accurate by checking electric leakage occurrence log information
It is more convenient, loss caused by investigation electric leakage is reduced, while protecting equipment and personal safety.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (1)
1. a kind of earth leakage protecting method, which comprises the steps of:
Whether step S1, the earth leakage protective concrete trigger condition and inspection leakage switch of user setting electric-leakage detection circuit beat
It opens, leakage switch opening thens follow the steps S2, and leakage switch closing then terminates entire earth leakage protective process；
Set by step S2, controlling terminal DCU poll detection of electrical leakage module, and the electric leakage value of information that will test and step S1
Earth leakage protective threshold values is compared calculating；
Step S3 is protected according to concrete trigger condition starting-up later time set by step S1 and is flowed when triggering earth leakage protective threshold values
Journey, and record electric leakage occurrence log information；
Step S4, user carry out problem investigation by checking the electric leakage occurrence log information of step S3, to the circuit leaked electricity；
Earth leakage protective concrete trigger condition described in step S1 include detection of electrical leakage module channels information, earth leakage protective threshold values,
Leakage switch, power supply switching, power supply switching delay time；
Loop protection process described in step S3 is further comprising the steps of:
Step S31, judges whether the electric leakage value of information is greater than the earth leakage protective threshold values and then executes step if the judgment is Yes
Rapid S32 is then repeated if the judgment is No and is executed step S2；
The power supply switching of step S32, starting-up later time execute earth leakage protective process, then execute step S33；
Step S33, controlling terminal DCU continue to be polled detection of electrical leakage module, then execute step S34；
Step S34, then judge whether the electric leakage value of information is less than the earth leakage protective threshold values, it is thened follow the steps if being judged as YES
S35 then repeats step S33 if the judgment is No；
Step S35, record electric leakage restores log information, and terminates entire loop protection process；
It is as follows that startup power supply switching function described in step S32 executes earth leakage protective process:
Step S321, judges whether power supply switching is opened, and thens follow the steps S322 if being judged as YES, and otherwise directly holds if being judged as
Row step S323 and do not close power supply output；
Step S322, after the power supply switching delay time, the power supply for closing corresponding circuit is exported to protect in the circuit
Circuit；
Step S323, record electric leakage occurrence log information simultaneously keep ring current to export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177362.1A CN107069648B (en) | 2017-03-22 | 2017-03-22 | Earth leakage protecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177362.1A CN107069648B (en) | 2017-03-22 | 2017-03-22 | Earth leakage protecting method |
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| Publication Number | Publication Date |
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| CN107069648A CN107069648A (en) | 2017-08-18 |
| CN107069648B true CN107069648B (en) | 2019-03-29 |
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| CN201710177362.1A Active CN107069648B (en) | 2017-03-22 | 2017-03-22 | Earth leakage protecting method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108169611A (en) * | 2017-12-28 | 2018-06-15 | 杭州普创电子有限公司 | A kind of method, apparatus and system for detecting creepage protection function |
| CN111416293B (en) * | 2020-04-27 | 2022-02-01 | 新疆紫金锌业有限公司 | Electric power inspection electric shock protection device |
Citations (4)
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|---|---|---|---|---|
| CN1744400A (en) * | 2004-09-02 | 2006-03-08 | 薛小平 | Intelligent leakage protector |
| CN102097780A (en) * | 2011-01-31 | 2011-06-15 | 赵长城 | Electric shock and electric leakage protection device for low voltage power grid |
| CN201966582U (en) * | 2011-01-31 | 2011-09-07 | 赵长城 | Electric shock-leakage protection device for low voltage power network |
| CN202488093U (en) * | 2011-12-27 | 2012-10-10 | 广东南冠电气有限公司 | Electric leakage discriminating protection device for detecting ground wire leakage current |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026295A (en) * | 2006-12-21 | 2007-08-29 | 王小华 | Non-grounding neutral point system low-voltage leakage protection method and its equipment |
| JP5989455B2 (en) * | 2012-08-21 | 2016-09-07 | ローム株式会社 | Leak current detection circuit, semiconductor device, LED lighting device, vehicle |
| CN104422830B (en) * | 2013-08-27 | 2019-03-29 | 施耐德电器工业公司 | Earth leakage protective device and creepage protection function detection method |
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- 2017-03-22 CN CN201710177362.1A patent/CN107069648B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744400A (en) * | 2004-09-02 | 2006-03-08 | 薛小平 | Intelligent leakage protector |
| CN102097780A (en) * | 2011-01-31 | 2011-06-15 | 赵长城 | Electric shock and electric leakage protection device for low voltage power grid |
| CN201966582U (en) * | 2011-01-31 | 2011-09-07 | 赵长城 | Electric shock-leakage protection device for low voltage power network |
| CN202488093U (en) * | 2011-12-27 | 2012-10-10 | 广东南冠电气有限公司 | Electric leakage discriminating protection device for detecting ground wire leakage current |
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Address after: 510000 Nancun Town, Panyu District, Guangzhou City, Guangdong Province, 6 1705 office buildings 383 North Panyu Avenue Patentee after: Guangzhou shining Electric Technology Co., Ltd. Address before: 511430 Dashi Stage 715, 105 National Road, Panyu District, Guangzhou, Guangdong 511 Patentee before: Guangzhou shining Electric Technology Co., Ltd. |