CN104092293A - Low-voltage power distribution cabinet fault point self-healing method - Google Patents

Low-voltage power distribution cabinet fault point self-healing method Download PDF

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CN104092293A
CN104092293A CN201410256221.5A CN201410256221A CN104092293A CN 104092293 A CN104092293 A CN 104092293A CN 201410256221 A CN201410256221 A CN 201410256221A CN 104092293 A CN104092293 A CN 104092293A
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fault
data
self
healing
judged
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CN104092293B (en
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吴宇红
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State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Deqing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • 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 low-voltage power distribution cabinet fault point self-healing method. The method involves trying power delivery for one time when actually acquired data is above a preset early warning value and is below an alarm value to help operation personnel to determine whether a fault is caused by a too high load in a short period. The self-healing success rate by use of the method can reach about 40%, and besides, during an execution process, even in case of a short-time fault, power supply can be recovered for short time so that urgent needs of clients can be met before the operation personnel arrive at a field to deal with the fault.

Description

A kind of low-voltage distribution cabinet fault point self-healing method
Technical field
The present invention relates to low-voltage distribution cabinet fault point self-healing method.
Background technology
It is larger that intelligent power distribution equipment investment is built in the public change of power supply enterprise at present, and realize the object of remote monitoring, remote regulating parameter and fault pre-alarming, but after having realized fault point automatism isolation and having reported to the police, conventionally need O&M personnel to look into fault point to on-the-spot stoning, if fault point fault is got rid of, also need O&M personnel 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, in low-voltage distribution cabinet, be provided with controller, controller and Flash memory, GSM and the communication connection of GPRS communication module, low-voltage distribution cabinet malfunction monitoring point is provided with data collection point, controller and data collection point communication connection 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, pre-stored in controller have early warning value and a warning value, in fault point diagnosing alarm and will fault point start to carry out self-healing program in fault point after isolation:
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 power supply corresponding with data channel, and deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, inserts recovery electric power feeding time, unison counter zero clearing on recovery electric power feeding time hurdle; 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 and adopt data judgement next time in fact;
Second step: judge that the 1st reality adopt data < early warning value × 0.5 and whether set up; Be "Yes" as resolute, controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop power supply corresponding with data channel, and deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, inserts recovery electric power feeding time, unison counter zero clearing on recovery electric power feeding time hurdle; If be judged as "No", carry out next step criterion;
The 3rd step: judge that the 1st reality adopt 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 power supply corresponding with data channel, and deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in 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 fault self-recovery program cycle carry out, when rolling counters forward 15 times, automatically termination failure self-healing program, controller triggers GSM and GPRS communication sends " × × village × × public change × × × fault point self-healing failure; in-situ processing as early as possible " warning information, warning information is deposited in to Flash memory Fault Isolation on the same day records in storehouse simultaneously, respective channel numbering the last item Fault Isolation record, and insert and stop time of implementation, counter O reset on self-healing failure hurdle;
The 4th step: judge that the 2nd reality adopt 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 immediately corresponding RCD separation command immediately, and send unsuccessfully warning information to deposit the isolation of Flash storage failure in examination and record corresponding Fault Isolation record in storehouse, and insert examination on self-healing failure hurdle and send Time To Failure, counter O reset, automatically termination failure self-healing program, controller triggers GSM and GPRS communication module sends " × × village × × public change × × × fault point self-healing failure, 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 fault self-recovery program cycle carry out, when rolling counters forward 15 times, automatically stopping self-healing cyclic program carries out, controller triggers GSM and GPRS communication module sends " × × village × × public change × × × fault point self-healing failure, in-situ processing as early as possible " warning information, warning information is deposited in to Flash memory Fault Isolation on the same day records in storehouse simultaneously, respective channel numbering the last item Fault Isolation record, and insert and stop carrying out the acute time of sentencing on self-healing failure hurdle, counter O reset.
Further, before execution fault point self-healing program, controller extracts in Flash memory fault warning on same day information recording storehouse, respective channel numbering the last item Fault Isolation record, whether the self-healing failure hurdle that judges this record is empty, and simultaneously whether the satisfied electric power feeding time hurdle that recovers is empty; If be judged as "No": this fault cannot be recovered power transmission automatically; If be judged as "Yes": respective channel counter is clear 0, the speed of adopting maintains 10 seconds each passages in fact, and proceeds to fault self-recovery program and enter circulation and carry out.
The present invention adopts after technique scheme, has brought following beneficial effect:
1, by extracting " self-healing failure hurdle " and " recovery electric power feeding time " judgement of respective channel the last item Fault Isolation record in Flash memory, avoid device to send and repeat power transmission instruction, record respective channel number and record number simultaneously, be convenient to fault point self-healing program pin the record of taking Fault Isolation measure is carried out.
2, adopt data more than default early warning value in fact, and below warning value time, realize trial line charging once by criterion 34, helping long-range the judging whether of O&M personnel is that the method self-healing successfully can reach 40% left and right because phenomenon appears in the too high fault that causes of short time load.
3, by method of counting, can avoid adopting data lower than warning value in fact time, blindly power transmission and frequent movement, reaches the safety utilization of electric power of protection low-voltage distribution apparatus and client's household electrical appliance.
4, cycle-criterion is carried out, and avoids program capacity, and this has good help to alleviating controller burden, makes controller adopt data capability in fact in processing and is largely increased.
5, this criterion in the process of implementation, no matter be the phenomenon of the failure of short time, the heating causing 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, O&M personnel be on the scene process before help client separate the matter of great urgency.
Brief description of the drawings
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
Illustrate the present invention below in conjunction with Fig. 1 to Fig. 3.
A kind of low-voltage distribution cabinet fault message remote monitoring method, in low-voltage distribution cabinet, be provided with controller, controller and Flash memory, GSM and the communication connection of GPRS communication module, low-voltage distribution cabinet malfunction monitoring point is provided with data collection point, controller and data collection point communication connection 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, pre-stored in controller have early warning value and a warning value, in low-voltage distribution cabinet running, following program is carried out in fault message remote monitoring 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 are carried out successively, and a upper program is finished and carries out next program again.Wherein, temperature data acquisition point is arranged on every 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, can also carry out measured data calculating by program in addition, obtain percentage, and then failure diagnosis is carried out in percentage contrast, for example: uneven percentage contrast (the actual measurement low pressure A that presses of three-phase load, B, C phase current, pass through formula: (max (Ia, Ib, Ic)-min (Ia, Ib, Ic)) ÷ min (Ia, Ib, Ic) × 100% obtains percentage), then can contrast according to early warning value 15% and warning value 25% is default, in addition can also be according to adopting data passes through active power in fact, apparent power, the formula such as reactive power and power factor obtains above-mentioned data after calculating, contrast and carry out fault diagnostic program with default advance notice value again.
As shown in Figure 1, failure diagnosis early warning program is as follows:
Pre-stored in controller have early warning value and two groups of data of warning value, adopts data when being more than or equal to early warning value but being less than warning value when any one passage is real, and controller records memory channel numbering, and moves 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": the circulation of starting failure diagnosis criterion, 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).
2: the 1 time reality of criterion is adopted data and is again greater than early warning value, but is less than warning value.
Be judged as "Yes": first judging that wireless low-voltage distribution cabinet data collector terminal is read was stored in this channel number in Flash storage failure early warning information record on same day in Flash memory and finally carries out the numerical value of early warning information and surpass 15% (that is: real last early warning information numerical value × 1.15 of carrying out on the data > same day of adopting), then the real data of adopting of judgement are greater than warning value 70% (that is: real default warning value × 0.7 of data > of adopting), finally judge the same day in Flash storage failure early warning information record without this channel number record.
Above three judge and one of meet for "Yes": start failure diagnosis cycle criterion, respective channel counter starts to count 1 time, sends instruction simultaneously, and the 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 judge and one of meet for "No": adopt data and default early warning value Data Comparison belongs to normal range (NR) in fact, exit failure diagnosis cycle-criterion.
3: the 2 times realities of criterion 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 and adopt data judgement next time in fact.
Be judged as "No": respective channel counter O reset, the speed of adopting is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
4: the 3 times realities of criterion 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 and adopt data judgement next time in fact.
Be judged as "No": respective channel counter O reset, the speed of adopting is in fact recovered 10 seconds each passages, 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 is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "Yes": enter the judgement of early warning value ratio, determination methods: again extract early warning value, by 130% calculating, that is: real data > early warning value × 1.3 of adopting of the 4th.
Again be judged as "Yes": trigger GSM and GPRS communication module and send SMS and synchronous driving early warning information data server afield, and deposit this pre-(announcement) alarming information in Flash storage failure early warning information and record in storehouse, respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, 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 and adopt data judgement next time in fact.
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 and adopt data judgement next time in fact.
Be judged as "No": respective channel counter O reset, the speed of adopting is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
7: the 6 times realities of criterion 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 is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "Yes": enter the judgement of early warning value ratio, determination methods: again extract early warning value, by 130% calculating, that is: the 6th reality adopted data > early warning value × 1.3.
Again be judged as "Yes": trigger GSM and GPRS communication module and send SMS and synchronous driving early warning information data server afield, and deposit this pre-(announcement) alarming information in Flash storage failure early warning information and record in storehouse, respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, 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 and adopt data judgement next time in fact.
8: the 7 times realities of criterion 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 and adopt data judgement next time in fact.
Be judged as "No": respective channel counter O reset, the speed of adopting is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
9: the 8 times realities of criterion 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 is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "Yes": enter the judgement of early warning value ratio, determination methods: again extract early warning value, by 130% calculating, that is: the 8th reality adopted data > early warning value × 1.3.
Again be judged as "Yes": trigger GSM and GPRS communication module and send SMS and synchronous driving early warning information data server afield, and deposit this pre-(announcement) alarming information in Flash storage failure early warning information and record in storehouse, respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, 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 and adopt data judgement next time in fact.
10: the 9 times realities of criterion are adopted data and are greater than the 8th reality and adopt data, and are less than warning value.
Be judged as "Yes": trigger GSM and GPRS communication module and send SMS and synchronous driving early warning information data server afield, and deposit this pre-(announcement) alarming information in Flash storage failure early warning information and record in storehouse, respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "No": respective channel counter O reset, the speed of adopting is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Above-mentioned failure diagnosis early warning program has the following advantages:
Criterion 1 is prepared counting stage, removes the data in counting storehouse, does not remove respective channel enumeration data while preventing from exiting failure diagnosis cycle-criterion.
Criterion 2: first extract in Flash storage failure early warning information record on the same day real data > same day last early warning information numerical value × 1.15 of carrying out of adopting of same channels numbering Data Comparison and whether set up and judge, can prevent that the same day from repeating to send with passage and type fault pre-alarming information.And judge whether real default warning value × 0.7 of data > of adopting sets up, and can solve the same day existing fault pre-alarming Value Data larger, prevent from normally starting fault diagnostic program.Finally judge the same day in Flash storage failure early warning information record without this channel number record, be to solve instantaneous (adopting in fact data only occurred once at 10 seconds) real error information mistake of adopting to start fault diagnostic program, cause controller computing pressure.
Criterion 5, criterion 7, criterion 9: the criterion of being often separated by is carried out early warning value judgement, the one, in order to prevent that adopting faulty equipment in data procedures in fact suddenlys change at short notice, and burning apparatus accident occurs.The 2nd, alleviate controller computational burden.
Criterion 10: reality is adopted data and adopted data in fact last time progressively to be increased, 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 and isolation program are as follows;
Criterion 21: adopting data is more than or equal to warning value in fact.
Be judged as "Yes": start the circulation of failure diagnosis criterion, respective channel counter O reset, starts to receive the 1st reality and adopt data.
Be judged as "No": adopt in fact data and default warning value Data Comparison and belong to normal.
22: the 1 time reality of criterion is adopted data and is again greater than warning value.
Be judged as "Yes": start failure diagnosis cycle criterion, respective channel counter starts to count 1 time, sends instruction simultaneously, the speed of adopting is promoted to 4 seconds each passages from former 10 seconds each passages in fact, and proceeds to and adopt data judgement next time in fact.
Be judged as "No": reality adopts data and default warning value Data Comparison belongs to normal range (NR), exits failure diagnosis cycle-criterion.
23: the 2 times realities of criterion 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 is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "Yes": judge that the 2nd reality 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 is received instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended to the isolation of Flash storage failure records in storehouse; respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, 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 and adopt data judgement next time in fact.
24: the 3 times realities of criterion 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 is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "Yes": judge that the 3rd reality 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 is received instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended to the isolation of Flash storage failure records in storehouse; respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, 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 and adopt data judgement next time in fact.
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 is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Be judged as "Yes": judge real data > warning value × 1.2 of adopting of the 4th.
Be judged as "Yes": trigger GSM and GPRS communication and send a warning message; send corresponding RCD separation command; RCD is received instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended to the isolation of Flash storage failure records in storehouse; respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, 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 and adopt data judgement next time in fact.
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 is in fact recovered 10 seconds each passages, 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 is received instruction tripping operation; stop power supply in this low-pressure line-outgoing loop; simultaneously and warning information is appended to the isolation of Flash storage failure records in storehouse; respective channel counter O reset simultaneously, the speed of adopting is in fact recovered 10 seconds each passages, exits failure diagnosis cycle-criterion.
Above-mentioned failure diagnosis alarm and isolation program have the following advantages: super warning value is the warning information that burns controller switching equipment fault, may cause great harm, so this criterion the beginning part is not put into constraint and just start the execution of cycle-criterion.Therefore, this criterion is to adopt 5 realities to adopt Data Comparison, solve and in actual acquisition process, repeat tripping operation and feed motion when the upper and lower minor swing of logarithm value, avoid the damage in the logical dead electricity process of client's household electrical appliance, solve low-voltage distribution cabinet simultaneously and stop sending too frequent, cause while startup, to produce high electric current and damage controller switching equipment.
As shown in Figure 3, self-healing program in fault point is as follows:
Criterion 31: extraction Flash memory Fault Isolation on the same day records in storehouse, respective channel numbering the last item Fault Isolation record, judge that the self-healing failure hurdle of this record is for empty, and the satisfied electric power feeding time hurdle that recovers is empty simultaneously.
Be judged as "No": this fault cannot be recovered power transmission automatically.
Be judged as "Yes": respective channel counter is clear 0, the speed of adopting maintains 10 seconds each passages in fact, and proceeds to criterion 32 and enter circulation and carry out.
Criterion 32: real data < early warning value × 0.5 of adopting.
Be judged as "Yes": wireless low-voltage distribution cabinet data collector terminal sends closed RCD instruction, RCD closes a floodgate, and recovers the low tension loop power supply of reference numeral.And deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, and insert recovery electric power feeding time, unison counter zero clearing recovering electric power feeding time hurdle.
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 and adopt data judgement next time in fact.
33: the 1 time reality of criterion is adopted data < early warning value × 0.5.
Be judged as "Yes": wireless low-voltage distribution cabinet data collector terminal sends closed RCD instruction, RCD closes a floodgate, and recovers the low tension loop power supply of reference numeral.And deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, inserts recovery electric power feeding time recovering electric power feeding time hurdle, counts zero clearing simultaneously.
Be judged as "No": enter criterion 34
34: the 1 time reality of criterion is adopted data < warning value × 0.7.
Be judged as "Yes": wireless low-voltage distribution cabinet data collector terminal sends closed RCD instruction, RCD closes a floodgate, and recovers the low tension loop power supply of reference numeral.And deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, inserts the trial line charging time recovering 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 and carry out, when rolling counters forward 15 times, automatically stop cycle-criterion, trigger GSM and GPRS communication and send " × × village × × public change × × × fault point self-healing failure; in-situ processing as early as possible " warning information, warning information is deposited in to Flash memory Fault Isolation on the same day records in storehouse simultaneously, respective channel numbering the last item Fault Isolation record, and insert and stop time of implementation, counter O reset on self-healing failure hurdle.
35: the 2 times realities of criterion are adopted data > warning value.
Be judged as "Yes": triggering GSM and GPRS communication send examination and send unsuccessfully warning information; and send immediately corresponding RCD separation command immediately; and send unsuccessfully warning information to deposit the isolation of Flash storage failure in examination and record corresponding Fault Isolation record in storehouse; and insert examination on self-healing failure hurdle and send Time To Failure; counter O reset; automatically stop cycle-criterion; trigger GSM and GPRS communication and send " × × village × × public change × × × fault point self-healing failure, 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 and carry out, when rolling counters forward 15 times, automatically stopping cycle-criterion carries out, trigger GSM and GPRS communication and send " × × village × × public change × × × fault point self-healing failure; in-situ processing as early as possible " warning information, warning information is deposited in to Flash memory Fault Isolation on the same day records in storehouse simultaneously, respective channel numbering the last item Fault Isolation record, and insert termination execution on self-healing failure hurdle and sentence acute time, counter O reset.
The advantage following points (taking outlet cable temperature monitoring as example) of above-mentioned fault point self-healing program:
1, by extracting " self-healing failure hurdle " and " recovery electric power feeding time " judgement of respective channel the last item Fault Isolation record in Flash memory, avoid device to send and repeat power transmission instruction, record respective channel number and record number simultaneously, be convenient to fault point self-healing program pin the record of taking Fault Isolation measure is carried out.
2, adopt data more than default early warning value in fact, and below warning value time, realize trial line charging once by criterion 34, helping long-range the judging whether of O&M personnel is that the method self-healing successfully can reach 40% left and right because phenomenon appears in the too high fault that causes of short time load.
3, by method of counting, can avoid adopting data lower than warning value in fact time, blindly power transmission and frequent movement, reaches the safety utilization of electric power of protection low-voltage distribution apparatus and client's household electrical appliance.
4, cycle-criterion is carried out, and avoids program capacity, and this has good help to alleviating controller burden, makes controller adopt data capability in fact in processing and is largely increased.
5, this criterion in the process of implementation, no matter be the phenomenon of the failure of short time, the heating causing 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, O&M personnel be on the scene process before help client separate the matter of great urgency.
Owing to having adopted technique scheme, bring following beneficial effect:
The one, utilize the built-in determining program of low-voltage distribution cabinet middle controller, the verification of data of pre-(announcements) alarming information of Stepwise Screening, improves (announcement) alarming information accuracy in advance;
The 2nd, align that normal peak of power consumption produces super or pre-(announcement) alarming information that falls parameter preset screen, and remover apparatus fault is possible;
The 3rd, utilize rational criterion, the cross-reference of single and double judgement, further in diagnostic procedure, pre-(announcement) alarming information to accident is sent fast;
The 4th, adopt the mode that progressively increases data, solve pre-(announcement) that utilize preset value to contrast 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, in low-voltage distribution cabinet, be provided with controller, controller and Flash memory, GSM and the communication connection of GPRS communication module, low-voltage distribution cabinet malfunction monitoring point is provided with data collection point, controller and data collection point communication connection 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, pre-stored in controller have early warning value and a warning value, it is characterized in that in fault point diagnosing alarm and will after the isolation of fault point, start to carry out 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 power supply corresponding with data channel, and deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, inserts recovery electric power feeding time, unison counter zero clearing on recovery electric power feeding time hurdle; 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 and adopt data judgement next time in fact;
Second step: judge that the 1st reality adopt data < early warning value × 0.5 and whether set up; Be "Yes" as resolute, controller sends closed RCD instruction, RCD closes a floodgate, recover the low tension loop power supply corresponding with data channel, and deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in storehouse, respective channel numbering the last item Fault Isolation record, inserts recovery electric power feeding time, unison counter zero clearing on recovery electric power feeding time hurdle; If be judged as "No", carry out next step criterion;
The 3rd step: judge that the 1st reality adopt 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 power supply corresponding with data channel, and deposit power transmission successful information in Flash memory Fault Isolation on the same day and record in 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 fault self-recovery program cycle carry out, when rolling counters forward 15 times, automatically termination failure self-healing program, controller triggers GSM and GPRS communication sends " × × village × × public change × × × fault point self-healing failure; in-situ processing as early as possible " warning information, warning information is deposited in to Flash memory Fault Isolation on the same day records in storehouse simultaneously, respective channel numbering the last item Fault Isolation record, and insert and stop time of implementation, counter O reset on self-healing failure hurdle;
The 4th step: judge that the 2nd reality adopt 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 immediately corresponding RCD separation command immediately, and send unsuccessfully warning information to deposit the isolation of Flash storage failure in examination and record corresponding Fault Isolation record in storehouse, and insert examination on self-healing failure hurdle and send Time To Failure, counter O reset, automatically termination failure self-healing program, controller triggers GSM and GPRS communication module sends " × × village × × public change × × × fault point self-healing failure, 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 fault self-recovery program cycle carry out, when rolling counters forward 15 times, automatically stopping self-healing cyclic program carries out, controller triggers GSM and GPRS communication module sends " × × village × × public change × × × fault point self-healing failure, in-situ processing as early as possible " warning information, warning information is deposited in to Flash memory Fault Isolation on the same day records in storehouse simultaneously, respective channel numbering the last item Fault Isolation record, and insert and stop carrying out the acute time of sentencing on self-healing failure hurdle, counter O reset.
2. a kind of low-voltage distribution cabinet according to claim 1 fault point self-healing method, it is characterized in that: before execution fault point self-healing program, controller extracts Flash memory Fault Isolation on the same day and records in storehouse, respective channel numbering the last item Fault Isolation record, whether the self-healing failure hurdle that judges this record is empty, and simultaneously whether the satisfied electric power feeding time hurdle that recovers is empty; If be judged as "No": this fault cannot be recovered power transmission automatically; If be judged as "Yes": respective channel counter is clear 0, the speed of adopting maintains 10 seconds each passages in fact, and proceeds to fault self-recovery program and enter circulation and carry out.
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CN103728536A (en) * 2013-12-11 2014-04-16 国家电网公司 Multi-source data grid fault identification method

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Publication number Priority date Publication date Assignee Title
CN103187796A (en) * 2011-12-29 2013-07-03 上海市电力公司 Early warning method for standby channel of transformer substation
CN202798139U (en) * 2012-04-10 2013-03-13 甘肃省电力公司金昌供电公司 Low-voltage distribution network fault real-time monitoring system
CN103197200A (en) * 2013-02-05 2013-07-10 广东电网公司佛山供电局 Method and system for rapidly collecting and transmitting fault ranging information of power grid line
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