CN104880626B - A kind of RCD acting characteristic automatic testing method - Google Patents
A kind of RCD acting characteristic automatic testing method Download PDFInfo
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Abstract
The invention discloses a kind of RCD acting characteristic automatic testing method, comprise the following steps：First, the detection of RCD acting characteristic is carried out to prepare；Secondly, regulated ground resistance is detected；It is then detected that and collect RCD acting characteristic detection data；Finally, data before the detection to RCD acting characteristic, data are contrasted and judged after data and detection in detection.The present invention improves the accuracy of RCD acting characteristic detection.
Description
Technical field
The present invention relates to power technology, more particularly to RCD acting characteristic detection method.
Background technology
Rural low voltage network classification installing RCD is to reduce or prevent personal electric shock injures and deaths thing
Therefore one of effective measures, and prevent the technical measures for causing electrical fire and electrical equipment to damage by electric leakage.For many years, remain
The popularization and application of aftercurrent action protector throughout all parts of the country, are all being used from family, enterprise and power supply enterprise, particularly supplied
The intelligent RCD that electric enterprise is installed in recent years, alleviated for power supply enterprise in operation maintenance work
More pressure.
The acting characteristic detection of rural power grids RCD is the emphasis of power supply enterprise's controller switching equipment operation maintenance
Work, the device action sensitivity is directly to prevent the maximally effective defense technique measure of personal electric shock casualty accident, in the past detection
Field operation by hand, that is, increase power supply station's workload and job safety risk again be present.
The content of the invention
The technical problems to be solved by the invention are just to provide a kind of RCD acting characteristic and examined automatically
Survey method, the detection of RCD acting characteristic is automatically performed using clocked flip, power supply enterprise can be obviously improved
Industry operating efficiency, job safety risk is reduced, improve the accuracy of device action Characteristics Detection.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of RCD action
Characteristic automatic testing method, comprises the following steps：
First, carry out the detection of RCD acting characteristic to prepare, specially count residual current acting and protect
This month tripping operation record of device storage is protected, the information of " this month existing trip operation record " is sent if tripping operation record is stored with simultaneously
Terminate the detection of this RCD acting characteristic to prepare, if record is not tripped, into next step；
Secondly, regulated ground resistance is detected, and is specially read default in RCD " remaining dynamic
Make current value " data, according to the scope of " residual action current value " data, corresponding grounding resistance is automatically adjusted, and will detection
Circuit is correspondingly connected to A phases either B phases or C phases；
It is then detected that and collect RCD acting characteristic detection data, specifically include detection before data,
Data, RCD acting characteristic therein detection data include U after data and detection in detectiona、Ub、Uc、
Ia、Ib、Ic, residual current IΔnWith switching value KGL data；
Finally, data before the detection to RCD acting characteristic, data after data and detection in detection
Contrasted and judged, if meeting Ua1>0、Ua2=0, Ua3>0、Ub1>0、Ub2=0, Ub3>0、Uc1>0、Uc2=0, Uc3>0、Ia1>
0、Ia2=0, Ia3>0、Ib1>0、Ib2=0, Ib3>0、Ic1>0、Ic2=0, Ic3>0、IΔn1>0、IΔn2=0, IΔn3>0、KGL1=1,
KGL2=0 and KGL3=1 condition, then " detection of RCD acting characteristic is normal " information is sent, and terminate this
Acting characteristic detection prepares, if do not met, " detection of RCD acting characteristic is abnormal, it is necessary to existing for transmission
Field is verified " information, and terminate the detection of this acting characteristic and prepare.
Preferably, " residual action current value " data of reading are 50~75mA, and it is 1k Ω shelves to automatically adjust grounding resistance,
Detection circuit is connected to A phases；When residual action current value " data are 100~150mA, it is 1.5k Ω shelves to automatically adjust grounding resistance,
Detection circuit is connected to B phases；When residual action current value " data are 200~300mA, it is 2k Ω shelves to automatically adjust grounding resistance, inspection
Slowdown monitoring circuit is connected to C phases.
Preferably, if " residual action current value " data are more than 300mA, first by RCD
Residual action current value is adjusted to 300mA, then adjusts corresponding grounding resistance again and is detected.
Preferably, when data in being detected to RCD acting characteristic carry out detection collection, according to pre-
If acting characteristic detects timing, by detection circuit phase sequence by relay coil with 0.2s conduction times through connecing resistance to connecing
Ground body simulate 80% detection of residual current super default " residual action current value ", and data receipts are sent after waiting 10~20s
Collection instruction, gathers related data.
Preferably, according to the data of collection, U is judgeda2=0, Ub2=0, Uc2=0 and KGL2Whether=0 condition meets,
Do not meet, increase relay coil ON time returns to be detected again, is met and is then carried out RCD action spy
Property detection after data detection and collection.
Preferably, data carry out multiple cycle detection collection in being detected to RCD acting characteristic
Afterwards, if do not met still, finally relay coil is extremely grounded with 0.5s conduction times through connecing resistance by detection circuit phase sequence
Body simulate 80% detection of residual current super default " residual action current value ", then collects data and is judged, is sentenced
Disconnected Ua2=0, Ub2=0, Uc2=0 and KGL2Whether=0 condition meets, and not meeting transmission, " RCD action is special
Property detection it is abnormal, it is necessary to on-site verification " short message, and terminate this acting characteristic detection prepare, meet, carry out residual current
Data Detection is collected after the detection of action protector acting characteristic.
The application of the present invention has been accomplished to be automatically performed the detection of RCD acting characteristic, while also utilizes use
Electric low-valley interval is detected, and realizes more power supplies, is avoided client's complaint of transient-power failure, is also improved residual current acting
The accuracy of protector action Characteristics Detection, play the effect for mitigating grass-roots work amount conscientiously.
(1) operation maintenance quality is improved.It is special to become the customization RCD action of power load characteristic using public affairs
Property detection time, can avoid the frequent movement in this month influences the normal production and living electricity consumption of client, and realize it is monthly periodically fixed
When into rule detection, solve in the past random operation and bring client to be discontented with.
(2) RCD operational reliability is improved.Using the statistics of experimental rig, contrast and the work(such as study and judge
Can, further increase the front and rear circuit board of RCD action, mechanism action health rate judges, testing result
Than manually more in place, that is, solving the not detectable internal fault of range estimation in the past, RCD has also been ensured
Bringing normally into operation.
(3) grass-roots work pressure is reduced.Monthly clocked flip is detected experimental rig, realizes equipment manager utilization
SMS, which is consulted, understands testing result, alleviates the operating pressure of basic unit, also achieves remote supervisory residual current acting guarantor
Protect device running status.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is remote auto landing operation experimental rig theory diagram of the present invention；
Fig. 2 is remote auto landing operation experimental rig earthing module wiring diagram of the present invention；
Fig. 3 is remote auto landing operation experimental rig wiring diagram of the present invention；
Fig. 4 is RCD acting characteristic automatic detection flow chart.
Embodiment
As shown in Figure 1 to Figure 3, experimental rig includes liquid crystal display, data memory module, CPU processor, GSM moulds
Block, keyboard input module, power module, data acquisition module, earthing module and two groups of switching switches and live trial jump button key
Composition, concrete function are as follows：
(1) data storage.Main responsible experimental rig performs the data storage after execution Characteristics Detection task.
(2) CPU processor.Perform the service data instruction of collection RCD to send, grounding resistance is certainly
Dynamic regulation, the relay coil time that logical (disconnected) is connected with grounding resistance are automatically adjusted, and timed activity Characteristics Detection threshold values is set
It is fixed, GSM message triggering, the function such as acting characteristic detection data comparison and judgement.
(3) power module.Working power accesses and lithium battery automatic charging, and when the module meets power failure, experimental rig may be used also
To pass through lithium battery power supply.
(4) data acquisition module.By 485 ports and two-way acting characteristic detection plant-grid connection form, 485 ports be responsible for
RCD carries out data exchange, voltage, electric current, the remaining electricity of collection RCD push
Stream, switching value and tripping operation record data.Two-way acting characteristic detection power supply then accesses from low-pressure line-outgoing fuse upper prop lead.
(5) earthing module.Plant-grid connection is detected through relay normally open contact and 1k Ω~2k Ω according to two-way acting characteristic
Resistance is connected with grounding body.
(6) keyboard input module.Data query in experimental rig data storage, acting characteristic detection timing threshold values are set
It is fixed, the setting of GSM mobile handset number, RCD type set etc..
(7) liquid crystal display.Trial jump detection process data wheel is aobvious and data storage in data show.
(8) switching switch.Can be carried out according to long-range/scene switch experimental rig automatically with manual activity Characteristics Detection mould
The switching of formula.
(9) live trial jump.When long-range/scene switch is arranged into scene, presses live trial jump button and carry out trial jump detection.
(10) gsm module.It is responsible for SMS to send, long-range reception arrange parameter adjustment and editing short message carry out data and looked into
Ask.
With reference to RCD acting characteristic automatic detection flow chart as shown in Figure 4, residual current is moved
The specific steps for making protector acting characteristic automatic testing method are explained.
First, carry out the detection of RCD acting characteristic to prepare, specially count residual current acting and protect
This month tripping operation record of device storage is protected, the information of " this month existing trip operation record " is sent if tripping operation record is stored with simultaneously
Terminate the detection of this RCD acting characteristic to prepare, if record is not tripped, into next step；
Secondly, regulated ground resistance is detected, and is specially read default in RCD " remaining dynamic
Make current value " data, according to the scope of " residual action current value " data, corresponding grounding resistance is automatically adjusted, and will detection
Circuit is correspondingly connected to A phases either B phases or C phases；
It is then detected that and collect RCD acting characteristic detection data, specifically include detection before data,
Data, RCD acting characteristic therein detection data include U after data and detection in detectiona、Ub、Uc、
Ia、Ib、Ic, residual current IΔnWith switching value KGL data；
Finally, data before the detection to RCD acting characteristic, data after data and detection in detection
Contrasted and judged, if meeting Ua1>0、Ua2=0, Ua3>0、Ub1>0、Ub2=0, Ub3>0、Uc1>0、Uc2=0, Uc3>0、Ia1>
0、Ia2=0, Ia3>0、Ib1>0、Ib2=0, Ib3>0、Ic1>0、Ic2=0, Ic3>0、IΔn1>0、IΔn2=0, IΔn3>0、KGL1=1,
KGL2=0 and KGL3=1 condition, then " detection of RCD acting characteristic is normal " information is sent, and terminate this
Acting characteristic detection prepares, if do not met, " detection of RCD acting characteristic is abnormal, it is necessary to existing for transmission
Field is verified " information, and terminate the detection of this acting characteristic and prepare.
Further, it is specially：
Step 1：According to the timing set in CPU processor, start the inspection of RCD acting characteristic
Survey and prepare, elimination CPU processor is data cached, into RCD acting characteristic testing process.
Step 2：CPU processor is tripped using this month in 485 port communications statistics RCD memory
Record, prepare to elapse forward day 29 and counted according to acting characteristic detection, as a result for more than or equal to " 1 " when, into step
3, otherwise into step 4.
Step 3：Trigger gsm module and send " this month existing trip operation record " short message, and terminate into step 17 link
The detection of this RCD acting characteristic prepares.
Step 4：Default " residual action current value " data in RCD are read by 485 ports.
Step 5：It is 50~75mA to read " residual action current value " data, and it is 1k that experimental rig, which automatically adjusts grounding resistance,
Ω shelves, detection circuit are connected to A phases；During 100~150mA, regulated ground resistance is 1.5k Ω shelves, and detection circuit is connected to B phases；200
During~300mA, adjust to 2k Ω shelves, detection circuit and be connected to C phases.During if greater than 300mA, experimental rig sends instruction first,
The residual action current value of RCD is adjusted to 300mA, then adjusts and is carried out on corresponding grounding resistance again
Detection.
Step 6：Data Collection instructs before sending the detection of RCD acting characteristic, gathers Ua、Ub、Uc、
Ia、Ib、Ic, residual current IΔnIt is stored in switching value KGL data in CPU processor caching, and presses Ua1、Ub1、Uc1、Ia1、Ib1、
Ic1、IΔn1And KGL1Form stores.
Step 7：According to CPU processor deliberate action Characteristics Detection timing, by detection circuit phase sequence by relay line
Circle carries out simulating residual current super default " residual action current value " with 0.2s conduction times through connecing resistance to grounding body
80% detection.
Step 8：Data Collection instruction is sent after waiting 10~20s, gathers Ua、Ub、Uc、Ia、Ib、Ic, residual current IΔnWith
Switching value KGL data are stored in CPU processor caching, and press Ua2、Ub2、Uc2、Ia2、Ib2、Ic2、IΔn2And KGL2Form stores,
0.3s and 0.5s circle collections are then using the data replaced in CPU processor caching.
Step 9：Judge Ua2=0, Ub2=0, Uc2=0 and KGL2Whether=0 condition meets, and does not meet by 0.3s and 0.5s
ON time return to step 10 or step 11 successively, meet and then enter step 12.
Step 10：Relay coil is carried out with 0.3s conduction times through connecing resistance to grounding body by detection circuit phase sequence
Simulate residual current super default " residual action current value " 80% detects, then enter back into step 8 and step 9 Data Collection with
Sentence link, do not meet into step 11, it is eligible to enter step 12.
Step 11：Relay coil is carried out with 0.5s conduction times through connecing resistance to grounding body by detection circuit phase sequence
Simulate residual current super default " residual action current value " 80% detects, then according to step 8 and step 9 Data Collection with sentence
Break to sentence and do not meet also, ineligible progress step 16, meet and then enter step 12.
Step 12：Data Collection instruction is sent after 60s again, gathers Ua、Ub、Uc、Ia、Ib、Ic, residual current IΔn2With open
Pass amount KGL data are stored in CPU processor caching, and press Ua3、Ub3、Uc3、Ia3、Ib3、Ic3、IΔn3And KGL3Form stores.
Step 13：In being cached according to CPU processor detect before, detection in (10~20s gathered datas) and detection after (60s
The data of collection afterwards) contrasted and judged.
Step 14：If meet Ua1>0、Ua2=0, Ua3>0、Ub1>0、Ub2=0, Ub3>0、Uc1>0、Uc2=0, Uc3>0、Ia1>
0、Ia2=0, Ia3>0、Ib1>0、Ib2=0, Ib3>0、Ic1>0、Ic2=0, Ic3>0、IΔn1>0、IΔn2=0, IΔn3>0、KGL1=1,
KGL2=0 and KGL3=1 condition then enters step 15, does not meet into step 16.
Step 15：Trigger gsm module and send " detection of RCD acting characteristic is normal " short message, and enter
Step 17 terminates the detection of this acting characteristic and prepared.
Step 16：Triggering gsm module transmission, " detection of RCD acting characteristic is abnormal, it is necessary to live
Verify " short message, and enter step 17 and terminate the detection preparation of this acting characteristic.
Step 17：By CPU processor cache in data conversion storage in data storage, and remove data cached.
Claims (6)
1. a kind of RCD acting characteristic automatic testing method, it is characterised in that comprise the following steps：
First, carry out the detection of RCD acting characteristic to prepare, specially count RCD
This month tripping operation record of storage, information and the end of " this month existing trip operation record " are sent if tripping operation record is stored with
The detection of this RCD acting characteristic prepares, if record is not tripped, into next step；
Secondly, regulated ground resistance is detected, and specially reads " residue action electricity default in RCD
Flow valuve " data, according to the scope of " residual action current value " data, corresponding grounding resistance is automatically adjusted, and circuit will be detected
It is corresponding to be connected to A phases either B phases or C phases；
It is then detected that and collect RCD acting characteristic detection data, specifically include detection before data, detection
Data after middle data and detection, RCD acting characteristic detection data therein include Ua、Ub、Uc、Ia、
Ib、Ic, residual current IΔnWith switching value KGL data；
Finally, data before the detection to RCD acting characteristic, data are carried out after data and detection in detection
Contrast and judgement, if meeting Ua1>0、Ua2=0、Ua3>0、Ub1>0、Ub2=0、Ub3>0、Uc1>0、Uc2=0、Uc3>0、Ia1>0、Ia2=
0、Ia3>0、Ib1>0、Ib2=0、Ib3>0、Ic1>0、Ic2=0、Ic3>0、IΔn1>0、IΔn2=0、IΔn3>0、KGL1=1、KGL2=0 and KGL3=
1 condition, then " detection of RCD acting characteristic is normal " information is sent, and it is accurate to terminate the detection of this acting characteristic
It is standby, " detection of RCD acting characteristic is abnormal, it is necessary to on-site verification " information if do not met, is sent, and
Terminate the detection of this acting characteristic to prepare.
2. a kind of RCD acting characteristic automatic testing method according to claim 1, its feature exist
In：When " residual action current value " data read are 50~75mA, it is 1k Ω shelves to automatically adjust grounding resistance, and detection circuit connects
In A phases；When " residual action current value " data are 100~150mA, it is 1.5k Ω shelves to automatically adjust grounding resistance, detects circuit
It is connected to B phases；When " residual action current value " data are 200~300mA, it is 2k Ω shelves to automatically adjust grounding resistance, detects circuit
It is connected to C phases.
3. a kind of RCD acting characteristic automatic testing method according to claim 2, its feature exist
In：" if residual action current value " data are more than 300mA, first by the residual action current of RCD
Value is adjusted to 300mA, then adjusts corresponding grounding resistance again and is detected.
4. a kind of RCD acting characteristic automatic testing method according to claim 1, its feature exist
In：When data in being detected to RCD acting characteristic carry out detection collection, examined according to deliberate action characteristic
Timing is surveyed, is simulated relay coil through connecing resistance to grounding body with 0.2s conduction times by detection circuit phase sequence
80% detection of residual current super default " residual action current value ", Data Collection instruction is sent after waiting 10~20s, gathers phase
Close data.
5. a kind of RCD acting characteristic automatic testing method according to claim 4, its feature exist
In：According to the data of collection, U is judgeda2=0、Ub2=0、Uc2=0 and KGL2Whether=0 condition meets, and does not meet, and increases relay
Device coil ON time is returned and detected again, meets the inspection of data after then progress RCD acting characteristic detection
Survey and collect.
6. a kind of RCD acting characteristic automatic testing method according to claim 5, its feature exist
In：After data carry out multiple cycle detection collection in being detected to RCD acting characteristic, if be not inconsistent still
Close, relay coil is finally subjected to simulation residue with 0.5s conduction times through connecing resistance to grounding body by detection circuit phase sequence
80% detection of electric current super default " residual action current value ", then collect data and judged, judge Ua2=0、Ub2=0、Uc2=
0 and KGL2Whether=0 condition meets, and not meeting transmission, " detection of RCD acting characteristic is abnormal, it is necessary to existing
Field is verified " short message, and terminate the detection of this acting characteristic and prepare, meet then progress RCD acting characteristic inspection
Data Detection is collected after survey.
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| CN108627710B (en) * | 2017-03-15 | 2021-10-01 | 深圳市奇辉电气有限公司 | Method and system for detecting motion characteristics of electrical equipment |
| CN111880083A (en) * | 2020-08-11 | 2020-11-03 | 常熟开关制造有限公司(原常熟开关厂） | Uninterrupted residual current test method and device and residual current protection device |
| CN111880084A (en) * | 2020-08-11 | 2020-11-03 | 常熟开关制造有限公司(原常熟开关厂） | Residual current protection uninterruptible power test method and device and residual current protection device |
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| JPS62220875A (en) * | 1986-03-24 | 1987-09-29 | Hitachi Ltd | Method and device for diagnosis |
| JPH03279875A (en) * | 1990-03-29 | 1991-12-11 | Matsushita Electric Works Ltd | Fault detecting device |
| CN100466137C (en) * | 2006-10-13 | 2009-03-04 | Tcl低压电器(无锡)有限公司 | Electromagnetic residual current action protector and its protecting method |
| CN201094134Y (en) * | 2007-05-29 | 2008-07-30 | 浙江正泰电器股份有限公司 | Residual current operation protector with self-diagnostic function |
| CN101221227A (en) * | 2008-01-30 | 2008-07-16 | 安泰科技股份有限公司 | Test system and method for magnetic property of after-current actuating protector magnetic core |
| CN201341011Y (en) * | 2008-12-29 | 2009-11-04 | 宜昌供电公司电能计量中心 | Detection wiring device of residual current action protector |
| CN201576057U (en) * | 2009-09-21 | 2010-09-08 | 曾锡山 | Automatic calibration equipment for residual current operated protective devices |
| CN102944858B (en) * | 2012-11-12 | 2014-12-03 | 无锡市计量测试中心 | Residual current device action characteristic detector calibration instrument separating switch |
| CN104391243B (en) * | 2014-11-18 | 2018-02-02 | 国家电网公司 | The automatic testing equipment of three-phase RCD |
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