CN104092293B - A kind of low-voltage distribution cabinet fault point self-healing method - Google Patents
A kind of low-voltage distribution cabinet fault point self-healing method Download PDFInfo
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- CN104092293B CN104092293B CN201410256221.5A CN201410256221A CN104092293B CN 104092293 B CN104092293 B CN 104092293B CN 201410256221 A CN201410256221 A CN 201410256221A CN 104092293 B CN104092293 B CN 104092293B
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- 238000003745 diagnosis Methods 0.000 description 38
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses a kind of low-voltage distribution cabinet fault point self-healing method, adopt data more than default early warning value in fact, and time below warning value, realize trial line charging once, long-range the judging whether of operation maintenance personnel is helped to be that the method self-healing successfully can reach about 40% because phenomenon appears in the short time load too high fault that causes; In addition, in the process of implementation, even the phenomenon of the failure of short time, also can realize of short duration recovery power transmission, before operation maintenance personnel is on the scene process, helps client to separate the matter of great urgency.
Description
Technical field
The present invention relates to low-voltage distribution cabinet fault point self-healing method.
Background technology
It is larger that current power supply enterprise public affairs become construction intelligent power distribution equipment investment, and also achieve the object of remote monitoring, remote regulating parameter and fault pre-alarming, but after achieving fault point automatism isolation and warning, usually operation maintenance personnel is needed to look into fault point to on-the-spot stoning, if fault point failture evacuation, operation maintenance personnel is also needed to restart.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of low-voltage distribution cabinet fault point self-healing method, realizes the automatic inspection of fault point and automatically recovers.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of low-voltage distribution cabinet fault point self-healing method, controller is provided with in low-voltage distribution cabinet, controller and flash storage, GSM and GPRS communication module communicates to connect, low-voltage distribution cabinet malfunction monitoring point is provided with data collection point, controller and data collection point communicate to connect image data, in controller, the data of corresponding each data collection point arrange a data channel, counter records channel number in controller and data acquisition number of times, early warning value and warning value is previously stored with in controller, in fault point diagnosing alarm and by fault point isolate after start to perform fault point self-healing program:
The first step, judges whether adopt data < early warning value × 0.5 in fact sets up; If be judged as "Yes", controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop corresponding with data channel to power, and by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, insert recovery electric power feeding time on recovery electric power feeding time hurdle, unison counter resets; If be judged as "No", respective channel rolling counters forward 1 time, in fact the speed of adopting maintains 10 seconds each passages, and proceeds to real data of adopting next time and judge;
Second step: judge that the 1st reality is adopted data < early warning value × 0.5 and whether set up; As being resolutely "Yes", controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop corresponding with data channel to power, and by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, insert recovery electric power feeding time on recovery electric power feeding time hurdle, unison counter resets; If be judged as "No", perform next step criterion;
3rd step: judge that the 1st reality is adopted data < warning value × 0.7 and whether set up; If be judged as "Yes", controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop corresponding with data channel to power, and by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, inserts the trial line charging time on recovery electric power feeding time hurdle, and enters next step criterion; If be judged as "No", rolling counters forward 2 times, the speed of adopting maintains 10 seconds each passages in fact, and proceed to the execution of fault self-recovery program cycle, when rolling counters forward 15 times, automatic termination failure self-healing program, controller triggers GSM and GPRS communication and sends " ×× public affairs in ×× village become the self-healing failure of ××× fault point; in-situ processing as early as possible " warning information, simultaneously by warning information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert the termination time of implementation, counter O reset on self-healing failure hurdle;
4th step: judge that the 2nd reality is adopted data > warning value and whether set up, if be judged as "Yes", controller triggers GSM and warning information is sent unsuccessfully in GPRS communication module transmission examination, and send corresponding RCD separation command immediately immediately, and examination sent unsuccessfully warning information stored in Fault Isolation record corresponding in flash storage Fault Isolation record storehouse, and insert examination give Time To Failure on self-healing failure hurdle, counter O reset, automatic termination failure self-healing program, controller triggers GSM and GPRS communication module sends " ×× public affairs in ×× village become the self-healing failure of ××× fault point, in-situ processing as early as possible " warning information, if be judged as "No": rolling counters forward 3 times, the speed of adopting maintains 10 seconds each passages in fact, and proceed to the execution of fault self-recovery program cycle, when rolling counters forward 15 times, automatic termination self-healing cyclic program performs, controller triggers GSM and GPRS communication module sends " ×× village ×× public affairs change ××× fault point self-healing failure, in-situ processing as early as possible " warning information, simultaneously by warning information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert on self-healing failure hurdle and stop execution and sentence the acute time, counter O reset.
Further, before execution fault point self-healing program, controller extracts in flash storage fault warning on same day information record storehouse, respective channel numbering the last item Fault Isolation record, judge whether the failed hurdle of the self-healing of this record is empty, and whether simultaneously the satisfied electric power feeding time hurdle that recovers is empty; If be judged as "No": this fault cannot recover power transmission automatically; If be judged as "Yes": respective channel counter clear 0, in fact the speed of adopting maintains 10 seconds each passages, and proceeds to fault self-recovery program and enter circulation and perform.
After the present invention adopts technique scheme, bring following beneficial effect:
1, judge by extracting " the self-healing failure hurdle " and " recovery electric power feeding time " of respective channel the last item Fault Isolation record in flash storage, avoiding device sends and repeats power transmission instruction, record respective channel number and record number simultaneously, be convenient to fault point self-healing program pin and perform taking the record of Fault Isolation measure.
2, data are adopted more than default early warning value in fact, and time below warning value, realize trial line charging once by criterion 34, help long-range the judging whether of operation maintenance personnel to be that the method self-healing successfully can reach about 40% because phenomenon appears in the short time load too high fault that causes.
3, by method of counting, real data of adopting can be avoided lower than during warning value, and blindly power transmission and frequent movement, reach the safety utilization of electric power of protection low-voltage distribution apparatus and client's household electrical appliance.
4, cycle-criterion performs, and avoid program capacity, this has good help to alleviating controller burden, makes controller adopt data capability in fact in process and is largely increased.
5, this criterion in the process of implementation, it is no matter the phenomenon of the failure of short time, the heating caused as cable copper sleeve or copper sleeve and fuse connecting portion bolt looseness, electric shock and corrosion can realize of short duration recovery power transmission, and before operation maintenance personnel is on the scene process, help client separates the matter of great urgency.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is failure diagnosis early warning program flow diagram;
Fig. 2 is failure diagnosis alarm and isolation program flow diagram;
Fig. 3 is fault point self-healing program flow diagram.
Embodiment
The present invention is illustrated below in conjunction with Fig. 1 to Fig. 3.
A kind of low-voltage distribution cabinet fault message remote monitoring method, controller is provided with in low-voltage distribution cabinet, controller and flash storage, GSM and GPRS communication module communicates to connect, low-voltage distribution cabinet malfunction monitoring point is provided with data collection point, controller and data collection point communicate to connect image data, in controller, the data of corresponding each data collection point arrange a data channel, counter records channel number in controller and data acquisition number of times, early warning value and warning value is previously stored with in controller, in low-voltage distribution cabinet running, fault message remote monitoring performs following program successively:
Program one, failure diagnosis early warning program:
Program two, failure diagnosis alarm and isolation program;
Program three, fault point self-healing program.
Above-mentioned three programs perform successively, and a upper program finishes execution performs next program again.Wherein, temperature data acquisition point is arranged on every bar low-pressure line-outgoing cable A, B, C, N phase and RTO fuse junction, mounting temperature sensor Real-time Collection temperature measuring data.Certainly, the data of data collection point collection are not limited to above-mentioned data, also can be other A, B, C phase overcurrent, low-voltage, the data such as overvoltage, measured data calculating can also be carried out in addition by program, obtain percentage, and then failure diagnosis is carried out in percentage contrast, such as: three-phase load unbalance presses percentage contrast (actual measurement low pressure A, B, C phase current, pass through formula: (max (Ia, Ib, Ic)-min (Ia, Ib, Ic)) ÷ min (Ia, Ib, Ic) × 100% obtains percentage), then can preset according to early warning value 15% and warning value 25% and contrast, in addition can also according to adopting data passes through active power in fact, apparent power, above-mentioned data are obtained after the formulae discovery such as reactive power and power factor, carry out contrast with the advance notice value preset again and perform fault diagnostic program.
As shown in Figure 1, failure diagnosis early warning program is as follows:
Be previously stored with early warning value and warning value two groups of data in controller, when any one passage is real adopt data be more than or equal to early warning value but be less than warning value time, controller record memory channel is numbered, and runs following failure diagnosis criterion:
Criterion 1: adopting data is more than or equal to early warning value in fact, but is less than warning value.
Be judged as "Yes": starting failure diagnosis criterion circulates, and respective channel counter O reset, starts to receive the 1st reality and adopt data.
Be judged as "No": reality adopts data and default early warning value Data Comparison belongs to normal range (NR).
Criterion 2: the 1 realities are adopted data and are again greater than early warning value, but are less than warning value.
Be judged as "Yes": first judge that wireless low-voltage distribution cabinet data collector terminal is read and be stored in numerical value that this channel number in flash storage fault pre-alarming information record finally performs early warning information the same day in flash storage and surpass 15% (that is: real adopt data > finally performed early warning information numerical value × 1.15 same day), then judge that real data of adopting are greater than warning value 70% (that is: adopting data > presets warning value × 0.7 in fact), finally judge the same day in flash storage fault pre-alarming information record without this channel number record.
Above three one of judge to meet for "Yes": startup separator diagnosis cycle criterion, and respective channel counter starts to count 1 time, sends instruction simultaneously, and speed of adopting is promoted to 4 seconds each passages from former 10 seconds each passages in fact, and proceed to and adopt data judgement next time in fact.
Above three one of judge to meet for "No": reality adopts data and default early warning value Data Comparison belongs to normal range (NR), exits failure diagnosis cycle-criterion.
Criterion 3: the 2 realities are adopted data and are greater than the 1st reality and adopt data, and are less than warning value.
Be judged as "Yes": rolling counters forward 2 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Criterion 4: the 3 realities are adopted data and are greater than the 2nd reality and adopt data, and are less than warning value.
Be judged as "Yes": rolling counters forward 3 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Criterion 5: the 4th is real adopts data and be greater than the 3rd reality and adopt data, and is less than warning value.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": then enter early warning value ratio and judge that determination methods: again extract early warning value calculates by 130%, that is: the 4th is real adopts data > early warning value × 1.3.
Again be judged as "Yes": triggering GSM and GPRS communication module send SMS and synchronous driving early warning information data server afield, and by this pre-(announcement) alarming information stored in flash storage fault pre-alarming information record storehouse, respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Again be judged as "No": rolling counters forward 4 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 6: the 5th is real adopts data and be greater than that the 4th is real adopts data, and is less than warning value.
Be judged as "Yes": rolling counters forward 5 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Criterion 7: the 6 realities are adopted data and are greater than that the 5th is real adopts data, and are less than warning value.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": enter early warning value ratio and judge, determination methods: again extract early warning value, calculate by 130%, that is: the 6th reality adopts data > early warning value × 1.3.
Again be judged as "Yes": triggering GSM and GPRS communication module send SMS and synchronous driving early warning information data server afield, and by this pre-(announcement) alarming information stored in flash storage fault pre-alarming information record storehouse, respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Again be judged as "No": rolling counters forward 6 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 8: the 7 realities are adopted data and are greater than the 6th reality and adopt data, and are less than warning value.
Be judged as "Yes": rolling counters forward 7 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Criterion 9: the 8 realities are adopted data and are greater than the 7th reality and adopt data, and are less than warning value.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": then enter early warning value ratio and judge, determination methods: again extract early warning value, calculate by 130%, that is: the 8th reality adopts data > early warning value × 1.3.
Again be judged as "Yes": triggering GSM and GPRS communication module send SMS and synchronous driving early warning information data server afield, and by this pre-(announcement) alarming information stored in flash storage fault pre-alarming information record storehouse, respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Again be judged as "No": rolling counters forward 8 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 10: the 9 realities are adopted data and are greater than the 8th reality and adopt data, and are less than warning value.
Be judged as "Yes": triggering GSM and GPRS communication module send SMS and synchronous driving early warning information data server afield, and by this pre-(announcement) alarming information stored in flash storage fault pre-alarming information record storehouse, respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Above-mentioned failure diagnosis early warning program has the following advantages:
Criterion 1 prepares counting stage, removes the data in counting storehouse, does not remove respective channel enumeration data when preventing from exiting failure diagnosis cycle-criterion.
Criterion 2: first extract the real data > that adopts of same channels numbering Data Comparison in same day flash storage fault pre-alarming information record and finally to perform early warning information numerical value × 1.15 same day and whether set up and judge, can prevent the same day from repeating transmission with passage and type fault early warning information.And judge that the real data > that adopts presets warning value × 0.7 and whether sets up, can solve that to have fault pre-alarming Value Data the same day comparatively large, preventing cannot normal startup separator diagnostic program.Finally judge the same day without this channel number record in flash storage fault pre-alarming information record, being that solution instantaneous (adopting data in fact only to occur once at 10 seconds) is real adopts error information mistake startup separator diagnostic program, causes controller computing pressure.
Criterion 5, criterion 7, criterion 9: a criterion of being often separated by performs early warning value and judges, one is suddenly change at short notice to prevent adopting faulty equipment in data procedures in fact, and burning apparatus accident occurs.Two is alleviate controller computational burden.
Criterion 10: adopting data in fact and adopting data in fact last time progressively increases, and illustrates that this temperature may break down to low-voltage distribution apparatus safe operation, therefore, determines this equipment fault, can send early warning information.
As shown in Figure 2, failure diagnosis alarm is as follows with isolation program;
Criterion 21: adopting data is more than or equal to warning value in fact.
Be judged as "Yes": startup separator diagnosis criterion circulates, and respective channel counter O reset, starts to receive the 1st reality and adopt data.
Be judged as "No": reality adopts data and default warning value Data Comparison belongs to normal.
Criterion 22: the 1 realities are adopted data and are again greater than warning value.
Be judged as "Yes": startup separator diagnosis cycle criterion, respective channel counter starts to count 1 time, sends instruction simultaneously, and in fact speed of adopting is promoted to 4 seconds each passages from former 10 seconds each passages, and proceeds to real data of adopting next time and judge.
Be judged as "No": reality adopts data and default warning value Data Comparison belongs to normal range (NR), exits failure diagnosis cycle-criterion.
Criterion 23: the 2 realities are adopted data and are greater than the 1st reality and adopt data.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": judge that the 2nd reality adopts data > warning value × 1.2.
Be judged as "Yes": trigger GSM and GPRS communication and send a warning message; send corresponding RCD separation command; RCD receives instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended in flash storage Fault Isolation record storehouse; respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "No": rolling counters forward 2 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 24: the 3 realities are adopted data and are greater than the 2nd reality and adopt data.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": judge that the 3rd reality adopts data > warning value × 1.2.
Be judged as "Yes": trigger GSM and GPRS communication and send a warning message; send corresponding RCD separation command; RCD receives instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended in flash storage Fault Isolation record storehouse; respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "No": rolling counters forward 3 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 25: the 4th is real adopts data and be greater than the 3rd reality and adopt data.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": judge that the 4th is real and adopt data > warning value × 1.2.
Be judged as "Yes": trigger GSM and GPRS communication and send a warning message; send corresponding RCD separation command; RCD receives instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended in flash storage Fault Isolation record storehouse; respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "No": rolling counters forward 4 times, in fact the speed of adopting maintains 4 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 26: adopt data is greater than warning value to the 5th in fact.
Be judged as "No": respective channel counter O reset, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Be judged as "Yes": trigger GSM and GPRS communication and send a warning message; send corresponding RCD separation command; RCD receives instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended in flash storage Fault Isolation record storehouse; respective channel counter O reset simultaneously, the speed of adopting recovers 10 seconds each passages in fact, exits failure diagnosis cycle-criterion.
Above-mentioned failure diagnosis alarm and isolation program have the following advantages: super warning value, are the warning information burning distribution equipment malfunction, may cause significant damage, so this criterion the beginning part does not put into the execution that constraint just starts cycle-criterion.Therefore, this criterion is that employing 5 realities adopt Data Comparison, tripping operation and feed motion is repeated when solving the upper and lower minor swing of logarithm value in actual acquisition process, client's household electrical appliance are avoided to lead to damage in dead electricity process, solve low-voltage distribution cabinet to stop passing through in frequently simultaneously, cause during startup and produce high circuit damage controller switching equipment.
As shown in Figure 3, self-healing program in fault point is as follows:
Criterion 31: extract in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, judge that the self-healing failure hurdle of this record is as empty, and the satisfied electric power feeding time hurdle that recovers is empty simultaneously.
Be judged as "No": this fault cannot recover power transmission automatically.
Be judged as "Yes": respective channel counter clear 0, in fact the speed of adopting maintains 10 seconds each passages, and proceeds to criterion 32 and enter circulation and perform.
Criterion 32: adopt data < early warning value × 0.5 in fact.
Be judged as "Yes": wireless low-voltage distribution cabinet data collector terminal sends closed RCD instruction, and RCD closes a floodgate, and the low tension loop recovering reference numeral is powered.And by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert recovery electric power feeding time on recovery electric power feeding time hurdle, unison counter resets.
Be judged as "No": respective channel rolling counters forward 1 time, in fact the speed of adopting maintains 10 seconds each passages, and proceeds to real data of adopting next time and judge.
Criterion 33: the 1 realities adopt data < early warning value × 0.5.
Be judged as "Yes": wireless low-voltage distribution cabinet data collector terminal sends closed RCD instruction, and RCD closes a floodgate, and the low tension loop recovering reference numeral is powered.And by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, inserts recovery electric power feeding time on recovery electric power feeding time hurdle, counts clearing simultaneously.
Be judged as "No": enter criterion 34
Criterion 34: the 1 realities adopt data < warning value × 0.7.
Be judged as "Yes": wireless low-voltage distribution cabinet data collector terminal sends closed RCD instruction, and RCD closes a floodgate, and the low tension loop recovering reference numeral is powered.And by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, inserts the trial line charging time on recovery electric power feeding time hurdle, and enters criterion 35.
Be judged as "No": rolling counters forward 2 times, the speed of adopting maintains 10 seconds each passages in fact, and proceed to criterion 32 circulation execution, when rolling counters forward 15 times, automatic termination cycle-criterion, trigger GSM and GPRS communication and send " ×× public affairs in ×× village become the self-healing failure of ××× fault point; in-situ processing as early as possible " warning information, simultaneously by warning information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert the termination time of implementation, counter O reset on self-healing failure hurdle.
Criterion 35: the 2 realities adopt data > warning value.
Be judged as "Yes": trigger GSM and GPRS communication transmission examination and send unsuccessfully warning information; and send corresponding RCD separation command immediately immediately; and examination sent unsuccessfully warning information stored in Fault Isolation record corresponding in flash storage Fault Isolation record storehouse; and insert examination give Time To Failure on self-healing failure hurdle; counter O reset; automatic termination cycle-criterion; trigger GSM and GPRS communication and send " ×× public affairs in ×× village become the self-healing failure of ××× fault point, in-situ processing as early as possible " warning information.
Be judged as "No": rolling counters forward 3 times, the speed of adopting maintains 10 seconds each passages in fact, and proceed to criterion 32 circulation execution, when rolling counters forward 15 times, automatic termination cycle-criterion performs, trigger GSM and GPRS communication and send " ×× public affairs in ×× village become the self-healing failure of ××× fault point; in-situ processing as early as possible " warning information, simultaneously by warning information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert on self-healing failure hurdle and stop execution and sentence the acute time, counter O reset.
The advantage following points (for outlet cable temperature monitoring) of above-mentioned fault point self-healing program:
1, judge by extracting " the self-healing failure hurdle " and " recovery electric power feeding time " of respective channel the last item Fault Isolation record in flash storage, avoiding device sends and repeats power transmission instruction, record respective channel number and record number simultaneously, be convenient to fault point self-healing program pin and perform taking the record of Fault Isolation measure.
2, data are adopted more than default early warning value in fact, and time below warning value, realize trial line charging once by criterion 34, help long-range the judging whether of operation maintenance personnel to be that the method self-healing successfully can reach about 40% because phenomenon appears in the short time load too high fault that causes.
3, by method of counting, real data of adopting can be avoided lower than during warning value, and blindly power transmission and frequent movement, reach the safety utilization of electric power of protection low-voltage distribution apparatus and client's household electrical appliance.
4, cycle-criterion performs, and avoid program capacity, this has good help to alleviating controller burden, makes controller adopt data capability in fact in process and is largely increased.
5, this criterion in the process of implementation, it is no matter the phenomenon of the failure of short time, the heating caused as cable copper sleeve or copper sleeve and fuse connecting portion bolt looseness, electric shock and corrosion can realize of short duration recovery power transmission, and before operation maintenance personnel is on the scene process, help client separates the matter of great urgency.
Owing to have employed technique scheme, bring following beneficial effect:
One is the built-in determining program utilizing low-voltage distribution cabinet middle controller, and the verification of data of pre-(announcement) alarming information of Stepwise Screening, improves pre-(announcement) alarming information accuracy;
Two is screen produce super of normal electricity consumption peak or pre-(announcements) alarming information of falling parameter preset, and remover apparatus fault is possible;
Three is utilize rational criterion, the cross-reference of single and double judgement, is sent fast further in diagnostic procedure to pre-(announcement) alarming information of accident;
Four is adopt the mode progressively increasing data, and solve pre-(announcement) that utilize preset value to carry out contrasting alert repetition and send, reach failure diagnosis more accurate, efficiency is higher.
Claims (2)
1. a low-voltage distribution cabinet fault point self-healing method, controller is provided with in low-voltage distribution cabinet, controller and flash storage, GSM and GPRS communication module communicates to connect, low-voltage distribution cabinet malfunction monitoring point is provided with data collection point, controller and data collection point communicate to connect image data, in controller, the data of corresponding each data collection point arrange a data channel, counter records channel number in controller and data acquisition number of times, early warning value and warning value is previously stored with in controller, it is characterized in that in fault point diagnosing alarm and start to perform fault point self-healing program by after the isolation of fault point:
The first step, judges whether adopt data < early warning value × 0.5 in fact sets up; If be judged as "Yes", controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop corresponding with data channel to power, and by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, insert recovery electric power feeding time on recovery electric power feeding time hurdle, unison counter resets; If be judged as "No", respective channel rolling counters forward 1 time, in fact the speed of adopting maintains 10 seconds each passages, and proceeds to real data of adopting next time and judge;
Second step: judge that the 1st reality is adopted data < early warning value × 0.5 and whether set up; If be judged as "Yes", controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop corresponding with data channel to power, and by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, insert recovery electric power feeding time on recovery electric power feeding time hurdle, unison counter resets; If be judged as "No", perform next step criterion;
3rd step: judge that the 1st reality is adopted data < warning value × 0.7 and whether set up; If be judged as "Yes", controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop corresponding with data channel to power, and by power transmission successful information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, inserts the trial line charging time on recovery electric power feeding time hurdle, and enters next step criterion; If be judged as "No", rolling counters forward 2 times, the speed of adopting maintains 10 seconds each passages in fact, and proceed to the execution of fault point self-healing program cycle, when rolling counters forward 15 times, automatic termination failure point self-healing program, controller triggers GSM and GPRS communication and sends " ×× public affairs in ×× village become the self-healing failure of ××× fault point; in-situ processing as early as possible " warning information, simultaneously by warning information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert the termination time of implementation, counter O reset on self-healing failure hurdle;
4th step: judge that the 2nd reality is adopted data > warning value and whether set up, if be judged as "Yes", controller triggers GSM and warning information is sent unsuccessfully in GPRS communication module transmission examination, and send corresponding RCD separation command immediately immediately, and examination sent unsuccessfully warning information stored in Fault Isolation record corresponding in flash storage Fault Isolation record storehouse, and insert examination give Time To Failure on self-healing failure hurdle, counter O reset, automatic termination failure point self-healing program, controller triggers GSM and GPRS communication module sends " ×× public affairs in ×× village become the self-healing failure of ××× fault point, in-situ processing as early as possible " warning information, if be judged as "No": rolling counters forward 3 times, the speed of adopting maintains 10 seconds each passages in fact, and proceed to the execution of fault point self-healing program cycle, when rolling counters forward 15 times, automatic termination failure point self-healing program performs, controller triggers GSM and GPRS communication module sends " ×× village ×× public affairs change ××× fault point self-healing failure, in-situ processing as early as possible " warning information, simultaneously by warning information stored in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, and insert on self-healing failure hurdle and stop execution and sentence the acute time, counter O reset.
2. a kind of low-voltage distribution cabinet fault point according to claim 1 self-healing method, it is characterized in that: before execution fault point self-healing program, controller extracts in flash storage Fault Isolation on same day record storehouse, respective channel numbering the last item Fault Isolation record, judge whether the failed hurdle of the self-healing of this record is empty, and whether simultaneously the satisfied electric power feeding time hurdle that recovers is empty; If be judged as "No": this fault cannot recover power transmission automatically; If be judged as "Yes": respective channel counter clear 0, in fact the speed of adopting maintains 10 seconds each passages, and proceeds to fault point self-healing program and enter circulation and perform.
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