CN110445107A - Processing method for 110kV line fault tripping - Google Patents
Processing method for 110kV line fault tripping Download PDFInfo
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- CN110445107A CN110445107A CN201910676382.2A CN201910676382A CN110445107A CN 110445107 A CN110445107 A CN 110445107A CN 201910676382 A CN201910676382 A CN 201910676382A CN 110445107 A CN110445107 A CN 110445107A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
Abstract
The invention relates to a processing method for 110kV line fault tripping, which comprises the following steps: 1. accident information is collected and preliminarily analyzed; 2. judging whether the accident is a major event or not, and simultaneously transmitting a primary analysis result to an operation and maintenance site; 3. uploading and summarizing the operation and maintenance site inspection results to the next flow for accident handling; 4. judging whether the line is a live working line or not according to the accident information; 5. judging whether the line inspection result has obvious faults or not, and when the line inspection result has obvious faults, finding out reasons and eliminating the faults, and trying to send the line inspection result once; when the line inspection result has no obvious fault, trying to send the line inspection result once; 6. judging whether the trial delivery is successful, and transmitting the accident handling condition to the short message platform system when the trial delivery is successful; when the trial delivery is unsuccessful, the accident handling condition is transmitted to a link for finding out reasons and eliminating faults for analysis; the invention shortens the processing time of line fault tripping, optimizes the power grid fault recovery and improves the first-aid repair efficiency and the service level.
Description
Technical field
The present invention relates to a kind of processing methods of 110kV line fault tripping, belong to troubleshooting field.
Background technique
With the development of electric power network technique, rule-of-thumb approach scheduling method has been not suitable with the requirement of nowadays power network development.State
" the Hebei South Power Network scheduling controlling rule of management " for netting the publication of Hebei Utilities Electric Co., wherein " troubleshooting regulation " has larger change
Change.Organ of the regulation center as electric network accident management, when accident occurs for power grid, dispatcher should work as according to power grid immediately
The preceding method of operation, abnormal signal and phenomenon etc. are judged and are handled to accident rapidly, are striven within the shortest time to user
It restores electricity, to be influenced caused by reduction accident.
Important public infrastructure of the power distribution network as national economy and social development, has that scale is big, distribution is wide, network
The features such as connection is various with the method for operation.And with the continuous expansion of distribution scale, the composition of electric load also has occurred
Significant changes, wherein business and electricity consumption of resident have and are obviously improved, this will so that distribution line and transformer load increase,
Lead to line tripping event increases.
In the prior art, it after 110kV line fault trips, is mainly uploaded using artificial warning message or station website
Information carry out the judgement of failure the scheme for restoring normal mode be discussed out then using the artificial analysis processing for carrying out failure,
Efficiency is lower, and fault location accuracy rate is lower, causes the line fault tripping processing time longer.
In the actual process, it is found that there are at many failures for 110kV line fault tripping processing method in the prior art
It is lower to manage efficiency, handles time longer drawback.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of processing of efficient and convenient 110kV line fault tripping
Method.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；
Step 4 is made to determine whether according to accident information as livewire work route；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
Further, step 1 accident information collects simultaneously preliminary analysis, i.e., carries out according to basic parameter and accident situation
Classification.
Further, the basic parameter includes line length, wire type, relay protection scheme and protection scope.
Further, the accident situation include accident occur time, monitoring-controlling system signal, relay protection and safety from
Dynamic device action situation and switch changed position, equipment state, loss load and dispatching terminal failure wave-recording situation.
Further, O&M site inspection result includes the time of accident generation, separate and relay protection in the step 3
Automatic safety device action situation, protection ranging situation and failure wave-recording ranging situation.
Further, the step 4 is made to determine whether that for livewire work route, judgment basis is such as according to accident information
Under:
When faulty line is livewire work route, then principle is disposed according to livewire work line fault, information is transmitted to transmission of electricity
Fortune inspection room carries out the electrification line inspection；
When faulty line is not livewire work route, then carry out accident treatment, summarize O&M site inspection result be transmitted to it is defeated
Electricity fortune inspection room carries out the electrification line inspection.
Further, the livewire work line fault disposition principle is live feelings after the tripping of livewire work line fault
Condition summarizes to system platform, and still regards equipment live.
Further, obvious fault includes strand breakage of circuit, damage and/or flashover burn in the step 5.
Beneficial effects of the present invention are as follows:
The present invention uses the processing method of 110kV line fault tripping, solves 110kV line fault tripping in the prior art
Afterwards, existing recovery normal efficiency is low, and fault location accuracy rate is low, leads to line fault tripping processing time longer problem,
The processing time for shortening line fault tripping optimizes electric network fault recovery, realizes and close to 110kV line tripping repairing
Endless tube control improves first-aid repair efficiency and service level, strengthens the control ability to the repairing of 110kV line tripping, improves
The stability of power distribution network operation level fundamentally improves the electricity consumption reliability level of 110kV route.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the flow chart of processing method of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to the accompanying drawing 1 and specific embodiment to hair
It is bright to carry out clear, complete description.
As shown in Figure 1, the present embodiment 1 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；
Step 4 is made to determine whether according to accident information as livewire work route；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 2 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；
Step 4 is made to determine whether according to accident information as livewire work route；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 3 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
The basic parameter includes line length, wire type, relay protection scheme and protection scope；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；
Step 4 is made to determine whether according to accident information as livewire work route；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 4 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
The basic parameter includes line length, wire type, relay protection scheme and protection scope；
The accident situation includes time, monitoring-controlling system signal, relay protection and the automatic safety device movement feelings that accident occurs
Condition and switch changed position, equipment state, loss load and dispatching terminal failure wave-recording situation；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；
Step 4 is made to determine whether according to accident information as livewire work route；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 5 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
The basic parameter includes line length, wire type, relay protection scheme and protection scope；
The accident situation includes time, monitoring-controlling system signal, relay protection and the automatic safety device movement feelings that accident occurs
Condition and switch changed position, equipment state, loss load and dispatching terminal failure wave-recording situation；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；The O&M site inspection knot
Fruit includes time, separate and automatic equipment of relay protection action situation, protection ranging situation and the failure that accident occurs
Recording ranging situation；
Step 4 is made to determine whether according to accident information as livewire work route；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 6 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
The basic parameter includes line length, wire type, relay protection scheme and protection scope；
The accident situation includes time, monitoring-controlling system signal, relay protection and the automatic safety device movement feelings that accident occurs
Condition and switch changed position, equipment state, loss load and dispatching terminal failure wave-recording situation；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；The O&M site inspection knot
Fruit includes time, separate and automatic equipment of relay protection action situation, protection ranging situation and the failure that accident occurs
Recording ranging situation；
Step 4 is made to determine whether as livewire work route that judgment basis is as follows according to accident information:
When faulty line is livewire work route, then principle is disposed according to livewire work line fault, information is transmitted to transmission of electricity
Fortune inspection room carries out the electrification line inspection；
When faulty line is not livewire work route, then carry out accident treatment, summarize O&M site inspection result be transmitted to it is defeated
Electricity fortune inspection room carries out the electrification line inspection；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 7 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
The basic parameter includes line length, wire type, relay protection scheme and protection scope；
The accident situation includes time, monitoring-controlling system signal, relay protection and the automatic safety device movement feelings that accident occurs
Condition and switch changed position, equipment state, loss load and dispatching terminal failure wave-recording situation；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；The O&M site inspection knot
Fruit includes time, separate and automatic equipment of relay protection action situation, protection ranging situation and the failure that accident occurs
Recording ranging situation；
Step 4 is made to determine whether as livewire work route that judgment basis is as follows according to accident information:
When faulty line is livewire work route, then principle is disposed according to livewire work line fault, information is transmitted to transmission of electricity
Fortune inspection room carries out the electrification line inspection；The livewire work line fault disposition principle is scene after the tripping of livewire work line fault
Situation summarizes to system platform, and still regards equipment live；
When faulty line is not livewire work route, then carry out accident treatment, summarize O&M site inspection result be transmitted to it is defeated
Electricity fortune inspection room carries out the electrification line inspection；
Step 5 determines that line inspection result whether there is obvious fault, when there are the eliminations that when obvious fault, ascertains the reason for line inspection result
After failure, carries out examination and send once；When line inspection result is without obvious fault, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
The present embodiment 8 is related to a kind of processing method of 110kV line fault tripping comprising:
Step 1, accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation；
The basic parameter includes line length, wire type, relay protection scheme and protection scope；
The accident situation includes time, monitoring-controlling system signal, relay protection and the automatic safety device movement feelings that accident occurs
Condition and switch changed position, equipment state, loss load and dispatching terminal failure wave-recording situation；
Whether step 2, judgement accident are major event, simultaneous transmission Preliminary Analysis Results to O&M scene；
When accident is determined as major event, then a hierarchical system is uploaded to；When accident is determined as insignificant event, then will
Accident situation is transmitted to SMS platform system；
Step 3 summarizes the upload of O&M site inspection result to downstream progress accident treatment；The O&M site inspection knot
Fruit includes time, separate and automatic equipment of relay protection action situation, protection ranging situation and the failure that accident occurs
Recording ranging situation；
Step 4 is made to determine whether as livewire work route that judgment basis is as follows according to accident information:
When faulty line is livewire work route, then principle is disposed according to livewire work line fault, information is transmitted to transmission of electricity
Fortune inspection room carries out the electrification line inspection；The livewire work line fault disposition principle is scene after the tripping of livewire work line fault
Situation summarizes to system platform, and still regards equipment live；
When faulty line is not livewire work route, then carry out accident treatment, summarize O&M site inspection result be transmitted to it is defeated
Electricity fortune inspection room carries out the electrification line inspection；
Step 5 determines that line inspection result whether there is obvious fault, hence it is evident that failure includes that strand breakage of circuit, damage and/or flashover are burnt
Wound；When line inspection result is there are when obvious fault, ascertaining the reason after eliminating the fault, carry out examination send it is primary；When line inspection result is without obvious
When failure, carries out examination and send once；
Whether step 6 determines to try to send to succeed, and when examination is sent successfully, accident treatment situation should be transmitted to SMS platform system；When
Examination is when sending failed, should be transmitted to ascertain the reason accident treatment situation and eliminate failsafe link and analyze.
After above-described embodiment solves 110kV line fault tripping in the prior art, existing recovery normal efficiency is low, therefore
It is low to hinder locating accuracy, leads to line fault tripping processing time longer problem, when shortening the processing of line fault tripping
Between, optimize electric network fault recovery, realize to 110kV line tripping repairing closed loop control, improve first-aid repair efficiency and
Service level strengthens the control ability to the repairing of 110kV line tripping, improves the stability of power distribution network operation level, from
Fundamentally improve the electricity consumption reliability level of 110kV route.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of processing method of 110kV line fault tripping, which is characterized in that it includes the following steps:
Step 1, accident information is collected and preliminary analysis；Whether step 2, judgement accident are major event, and simultaneous transmission is tentatively divided
Result is analysed to O&M scene；When accident is determined as major event, then a hierarchical system is uploaded to；When accident be determined as it is non-heavy
When major issue, then accident situation is transmitted to SMS platform system；Step 3 summarizes the upload of O&M site inspection result under
One process carries out accident treatment；Step 4 is made to determine whether according to accident information as livewire work route；Step 5, judgement are looked into
Knot fruit whether there is obvious fault, when line inspection result is there are when obvious fault, ascertaining the reason after eliminating the fault, carries out examination and send one
It is secondary；When line inspection result is without obvious fault, carries out examination and send once；Whether step 6 determines to try to send to succeed, and when examination is sent successfully, answers
Accident treatment situation is transmitted to SMS platform system；When examination is sent it is failed when, accident treatment situation should be transmitted to and find out original
It is analyzed because eliminating failsafe link.
2. a kind of processing method of 110kV line fault tripping according to claim 1, which is characterized in that the step 1
Accident information is collected and preliminary analysis, i.e., classifies according to basic parameter and accident situation.
3. a kind of processing method of 110kV line fault tripping according to claim 2, which is characterized in that described basic
Parameter includes line length, wire type, relay protection scheme and protection scope.
4. a kind of processing method of 110kV line fault tripping according to claim 2 or 3, which is characterized in that the thing
Therefore situation includes time, monitoring-controlling system signal, relay protection and the automatic safety device action situation and switch change that accident occurs
Position.
5. a kind of processing method of 110kV line fault tripping according to claim 4, which is characterized in that the accident
Situation further includes equipment state, loss load and dispatching terminal failure wave-recording situation.
6. a kind of processing method of 110kV line fault tripping according to claim 1, which is characterized in that the step 3
Middle O&M site inspection result includes time, the separate and automatic equipment of relay protection action situation that accident occurs.
7. a kind of processing method of 110kV line fault tripping according to claim 6, which is characterized in that the step 3
Middle O&M site inspection result further includes protection ranging situation and failure wave-recording ranging situation.
8. a kind of processing method of 110kV line fault tripping according to claim 1, which is characterized in that
The step 4 is made to determine whether as livewire work route that judgment basis is as follows according to accident information:
When faulty line is livewire work route, then principle is disposed according to livewire work line fault, information is transmitted to transmission of electricity
Fortune inspection room carries out the electrification line inspection；
When faulty line is not livewire work route, then carry out accident treatment, summarize O&M site inspection result be transmitted to it is defeated
Electricity fortune inspection room carries out the electrification line inspection.
9. a kind of processing method of 110kV line fault tripping according to claim 8, which is characterized in that
The livewire work line fault disposition principle is after livewire work line fault trips, and field condition summarizes flat to system
Platform, and still regard equipment live.
10. a kind of processing method of 110kV line fault tripping according to claim 1, which is characterized in that the step
Obvious fault includes strand breakage of circuit, damage and/or flashover burn in 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113837652A (en) * | 2021-10-13 | 2021-12-24 | 广东电网有限责任公司东莞供电局 | Power grid accident information analysis and release method and system |
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