CN103197200A - Method and system for rapidly collecting and transmitting fault ranging information of power grid line - Google Patents
Method and system for rapidly collecting and transmitting fault ranging information of power grid line Download PDFInfo
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Abstract
The invention provides a method and a system for rapidly collecting and transmitting fault ranging information of a power grid line. The method includes the following steps: when the power grid line is faulty, a protective trip is started, a fault distance is recorded, and fault ranging information is obtained; the fault ranging information is converted into telecontrol information and the telecontrol information is uploaded to an EMS system; and whether a motion condition of a signal generated when tripping operation occurs due to a failure of the power grid line meets a preset logic criterion is judged, and if the answer is positive, the fault ranging information is extracted from the telecontrol information and transmitted to power grid line operation and maintenance persons in a preset format. By means of the method and the system, the fault ranging information can be rapidly obtained, converted into the telecontrol information, and uploaded to the EMS system. Information obtaining is facilitated for scheduling and monitoring duty persons. Besides, the method and the system can transmit the fault ranging information in the first time (such as in a minute) to the power grid line operation and maintenance persons, the speed is high, and time delay caused by fault finding and power restoration is greatly shortened.
Description
Technical field
The present invention relates to field of power, particularly relate to a kind of power transmission network line fault ranging information collection and the method that transmits and the quick system of gathering and transmitting of a kind of power transmission network line fault ranging information fast.
Background technology
When the power transmission network circuit be short-circuited because of a variety of causes or earth fault tripping operation after, switch separating brake, line load (electric current or power) become zero.At this time, the distance that the protective device meeting perception fault in the transformer station takes place, namely protective device can the record trouble ranging information.The operator on duty is at EMS(energy management system in the dispatching of power netwoks monitoring, energy management system) receive line switching fault trip alarm after, no matter switch reclosures success or not all needs to notify power transmission network circuit O﹠M personnel line walking to search and handling failure.At present, traditional electrical network dispatching and monitoring operator on duty obtains fault localization information following two kinds of approach:
Approach one: entered the station by the personnel of patrolling and examining and to check and know fault localization information.As shown in Figure 1; after the line fault tripping operation; the yardman receives alarm; and in transformer station, check line protective devices by this yardman's Advise By Wire personnel that patrol and examine; after the personnel that patrol and examine gave the yardman with the fault localization information feedback of line protective devices record, the yardman reinformed power transmission network circuit O﹠M personnel and carries out line walking inspection, fault handling.The whole time of obtaining the line fault ranging information is longer, generally all needs 60-120 minute.
Approach two: know fault localization information by the acquisition process of protection infosystem.The scheduling operator on duty can also check power transmission network line fault ranging information by the protection infosystem.The acquisition process figure of protection infosystem as shown in Figure 2, all protective devices will protects message to deliver to protection information system sub-station in the transformer station transformer station in, protect information system sub-station again protecting message to deliver to the protection infosystem substation of grid dispatching center.
Analyze above two kinds of approach that obtain fault localization information as can be known, though the two all can get access to fault localization information, have some problems:
The problem that approach one exists: (1), speed are slow, and whole acquisition process expended more than 1 hour; (2), take manpower, need patrol and examine arrives at a station checks.(3), incur loss through delay the troubleshooting processing time, power transmission network circuit O﹠M personnel need wait to receive just to carry out after the scheduling operator on duty order and speedily carry out rescue work, thereby delay to search the Failure And Recovery supplying time.
The problem that exists of approach two in addition: (1), inconvenient operation, information can't be integrated in same interface.Protecting infosystem and EMS system is two different systems, and dispatching and monitoring is in the EMS system, and but in the protection infosystem, the dispatching and monitoring operator on duty need use two systems to fault localization information; (2), protection Information System configuration cost is big; (3), coverage rate is not enough.Because the protection infosystem is used the data dispatching net, and at present many transformer stations access dispatching data network not as yet, so there are many transformer stations can't use this approach to realize.
In sum, present stage lacks a kind of effective and efficient manner realizes and will deliver to the EMS system on the fault localization information on the line protective devices, and fault localization information is sent to power transmission network circuit O﹠M personnel in the very first time accurately.
Summary of the invention
Based on this, the invention provides a kind of power transmission network line fault ranging information and gather fast and the method and system that transmit, can will deliver to the EMS system on the fault localization information and in the very first time, pass to power transmission network circuit O﹠M personnel
For achieving the above object, the present invention adopts following technical scheme:
A kind of power transmission network line fault ranging information is gathered and the method that transmits fast, may further comprise the steps:
During the power network line fault, start protection tripping operation and record trouble distance, obtain fault localization information;
Described fault localization information is converted into telecontrol information, and will delivers to the EMS system on this telecontrol information;
Whether the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation;
If then from described telecontrol information, extract fault localization information and send circuit O﹠M personnel to predetermined form.
A kind of power transmission network line fault ranging information is gathered and the system that transmits fast, comprising:
Fault localization information acquisition module is used for when the power network line fault, starts protection tripping operation and record trouble distance, obtains fault localization information;
First delivery module is used for described fault localization information is converted into telecontrol information, and will delivers to the EMS system on this telecontrol information;
Judge module, whether the action situation of signal satisfies predetermined logic criterion when being used for judging the line fault tripping operation;
Second delivery module, the judged result that is used at described judge module is under the situation that is, extracts fault localization information and send circuit O﹠M personnel to predetermined form from described telecontrol information.
By above scheme as can be seen, power transmission network line fault ranging information of the present invention is gathered and the method and system that transmit fast, when the power network line fault, can obtain fault localization information fast, and with fault localization information be converted into telecontrol information be uploaded to the EMS system rather than the protection infosystem, thereby made things convenient for dispatching and monitoring operator on duty's information to obtain; And not needing to spend manpower among the present invention patrols and examines to arrive at a station and checks, when the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation, can in the very first time (as 1 minute), send fault localization information to circuit O﹠M personnel, speed is fast, has reduced greatly and has searched the delay of Failure And Recovery supplying time.
Description of drawings
Fig. 1 checks the synoptic diagram that obtains fault localization information for tradition is entered the station by the personnel of patrolling and examining;
Fig. 2 is known the synoptic diagram of fault localization information by the acquisition process of protection infosystem for tradition;
Fig. 3 is that a kind of power transmission network line fault ranging information is gathered and the method flow synoptic diagram that transmits fast in the embodiment of the invention;
Fig. 4 for fault localization information in the embodiment of the invention to send the synoptic diagram of EMS system on the telecontrol information mode;
Fault localization information and the time relation synoptic diagram of Fig. 5 for obtaining in the embodiment of the invention;
Fig. 6 is that a kind of power transmission network line fault ranging information is gathered and the system architecture synoptic diagram that transmits fast in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme of the present invention is further described.
Referring to shown in Figure 3, a kind of power transmission network line fault ranging information is gathered and the method that transmits fast, may further comprise the steps:
Step S101, during the power network line fault, line protective devices start protection tripping operation and record trouble distance, obtain fault localization information, enter step S102 then.
Step S102 is converted into telecontrol information with described fault localization information, and with delivering to the EMS system on this telecontrol information, enters step S103 then.
As shown in Figure 4, line protective devices are delivered to telemechanical apparatus with the distance measurement value of record, and telemechanical apparatus is delivered to the EMS system after fault distance information is converted into telecontrol information.Concrete; it is above-mentioned when fault localization information is converted into telecontrol information; requirement from protective device send to the unit of the distance measurement value of telemechanical apparatus be length (rice or km), telemechanical apparatus is that the unit round numbers will be delivered to the EMS system on the fault distance with 10 meters (0.01km).
Need to prove, above-mentioned telecontrol information, referring to and realize required remote signalling information, telemetry intelligence (TELINT), remote information and the remote regulating information of monitoring electrical network in the EMS system, is the regular information encoded stream that characterizes the required on off state amount of electrical network and equipment operation and control and analog quantity.
As an embodiment preferably, described the process of delivering to the EMS main website on the telecontrol information specifically can be comprised: will deliver to the EMS main website on the described telecontrol information with remote mode.
Step S103, whether the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation, then returns step S101 if not, if then enter step S104.
After power transmission network line fault ranging information is sent to the EMS system, the dispatching and monitoring operator on duty can in time see fault localization information, if employing classic method, the words of the Advise By Wire power transmission network circuit O﹠M personnel arrangement repairing line inspection again after other fault warning information of analysis-by-synthesis, because this analysis and the process of ordering relate to artificial treatment, quick circulation that therefore can not guarantee information.Simultaneously, because equipment need overhaul and work such as debugging in the electric system, may produce the fault localization information that is not " real fault ", so EMS system signal action situation is formulated certain logic criterion in the time of need tripping according to line fault, just fault localization information is sent to power transmission network circuit O﹠M personnel when satisfying the logic criterion.Therefore, as an embodiment preferably, the described process that whether the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation specifically can comprise as follows:
Step S1031 detects following information from line fault trip signal recording events tabulation: contain the alarm signal of four words of fault localization, greater than 0 and less than the fault distance kilometer numeral of setpoint distance threshold value, electric pressure and corresponding switch scheduling numbering etc.;
Step S1032 carries out logic according to detected information to the signalizing activity situation and judges; Be specially: for the 110kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition: switch disconnects, circuit does not have and presses works, protection action and move appearance simultaneously; And for the 220kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition simultaneously: switch disconnects, circuit does not have and presses works, protection action action, accident and always move appearance simultaneously.
By above-mentioned scheme, be equivalent to have among the present invention the reasoning process (being operation simulation person's analysis) of simple " artificial intelligence ".
Might as well suppose that the EMS system receives that the list of thing of the power network line fault trip of seeing with the yardman is as follows:
Table 1:110kV nepheline station 110kV rosy clouds sheep line fault tripping signal record
| 2010/05/2109:26:34 nepheline station #2 main transformer gear is by 6 grades to 7 grades |
| The 124 protection action actions of 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line |
| 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line 124 switches disconnect |
| The 124 protection action involutions of 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line |
| 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line 124 circuits do not have the work of pressing |
| 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line 124 reclosings action action |
| 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line 124 switch closures |
| 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line 124 reclosings action involution |
| 2010/05/21 10:32:54 nepheline station 110kV rosy clouds sheep line 124 circuits do not have the pressure involution |
| The 124 protection action actions of 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line |
| 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line 124 switches disconnect |
| The 124 protection action involutions of 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line |
| 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line 124 circuits do not have the work of pressing |
| 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line 124 reclosings action action |
| 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line 124 switch closures |
| 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line 124 reclosings action involution |
| 2010/05/21 10:32:57 nepheline station 110kV rosy clouds sheep line 124 circuits do not have the pressure involution |
| The 124 protection action actions of 2010/05/21 10:32:51:713SOE nepheline station 110kV rosy clouds sheep line |
| 2010/05/21 10:32:51:717SOE nepheline station 110kV rosy clouds sheep line 124 control loops broken string action |
| 2010/05/21 10:32:51:742SOE nepheline station 110kV rosy clouds sheep line 124 switch intermediate states 00 |
| 2010/05/21 10:32:51:747SOE nepheline station 110kV rosy clouds sheep line 124 switches disconnect |
| 2010/05/21 10:32:51:752SOE nepheline station 110kV rosy clouds sheep line 124 control loops broken string involution |
| The 124 protection action involutions of 2010/05/21 10:32:51:772SOE nepheline station 110kV rosy clouds sheep line |
| 2010/05/21 10:32:51:779SOE nepheline station 110kV rosy clouds sheep line 124 circuits do not have the work of pressing |
| 2010/05/21 10:32:52:775SOE nepheline station 110kV rosy clouds sheep line 124 reclosings action action |
| 2010/05/21 10:32:52:778SOE nepheline station 110kV rosy clouds sheep line 124 control loops broken string action |
| 2010/05/21 10:32:52:837SOE nepheline station 110kV rosy clouds sheep line 124 switch intermediate states 00 |
[0043]?
| 2010/05/21 10:32:52:861SOE nepheline station 110kV rosy clouds sheep line 124 switch closures |
| 2010/05/21 10:32:52:863SOE nepheline station 110kV rosy clouds sheep line 124 control loops broken string involution |
| 2010/05/21 10:32:52:926SOE nepheline station 110kV rosy clouds sheep line 124 reclosings action involution |
| 2010/05/21 10:32:52:931SOE nepheline station 110kV rosy clouds sheep line 124 circuits do not have the pressure involution |
| 2010/05/21 10:33:03 nepheline station 110kV rosy clouds sheep line 124 fault localization 7.30km |
| 2010/05/21 10:46:01 nepheline station 110kV rosy clouds sheep line 124 fault localizations sudden change recovers |
| 2010/05/21 11:56:47 nepheline station #1 main transformer gear is by 7 grades to 6 grades |
Lotus A-wire fault tripping signal record behind the 220kV of dragon station behind the table 2:220kV
Associative list 1, table 2, combing matches desired information from above list of thing, and the then concrete process that satisfies predetermined logic criterion that judges whether can be described below:
(1), from EMS system Real-time Alarm signal, detects the alarm signal that contains " fault localization " four words;
(2), detect fault distance kilometer numeral;
(3), the numeral that detects in the step (2) is judged.Satisfy condition greater than 0 and can make different settings according to different situations less than this S value of setpoint distance threshold value S() then as effective value, and enter step (4); Otherwise be invalid data, get back to step (1);
(4), detect electric pressure and switch scheduling numbering.In the present embodiment, find out " 110kV and 3 scheduling numberings " or " 220kV and 4 scheduling numberings ";
(5), signalizing activity situation logic is judged.In front on the basis of step, detect predetermined time T(as 30 seconds) preceding electric pressure and the switch scheduling numbering alarm signal identical with previous step, if satisfy following criterion then the match is successful, otherwise coupling gets nowhere:
For the 110kV circuit: " switch disconnects ” ﹠amp; " circuit does not have to press and makes ” ﹠amp; " protection action action ” ﹠amp; Switch scheduling numbering is identical with step (4);
For the 220kV circuit: " switch disconnects ” ﹠amp; " circuit does not have to press and makes ” ﹠amp; " protection action action ” ﹠amp; " accident is always moved ” ﹠amp; Switch scheduling numbering is identical with step (4).
Step S104, if previous step is judged the action situation of signal when drawing the line fault tripping operation and satisfied predetermined logic criterion, then from described telecontrol information, extract fault localization information (the fault localization information that this extracts is the fault localization information that obtains among the step S101) and send circuit O﹠M personnel to predetermined form.
In order better to make things convenient for circuit O﹠M personnel in time to check information, as an embodiment preferably, described fault localization information specifically can be comprised with the process that predetermined form sends circuit O﹠M personnel to: by the note form and with predetermined form described fault localization information is sent on circuit O﹠M personnel's the mobile phone.As adopting following note model to send: " line fault ranging information: xx branch during xx month xx day xx, xx station xx kVxx line fault localization S km." as seen, the invention provides a kind of reliable, automatic mode that realizes fault localization information is sent to the note form the relevant O﹠M personnel of circuit.
In addition, as an embodiment preferably, whether the action situation of signal satisfies before the predetermined logic criterion after described step S102 delivers to the EMS system with telecontrol information, when step S103 judges the line fault tripping operation, can also comprise the steps: in the EMS system, in remote measurement sudden change alarm event mode described fault localization data to be handled, produce fault warning information.Can be that unit shows with the kilometer, remind the yardman in time to handle.
Fault warning information can adopt following form: the xx(time) xx station xx line fault range finding xxkm.
And.Check fault localization information for convenience, requiring the ranging information primary data among the present invention is 0, and protection tripping operation takes place to send latest data on the back, and data can not be clear 0, only treats that new data upgrades legacy data.In one embodiment, the fault localization information that obtains and time relation can be referring to shown in Figure 5.
Collection is corresponding with the method that transmits fast with above-mentioned a kind of power transmission network line fault ranging information, and the system that the present invention also provides a kind of power transmission network line fault ranging information to gather and transmit fast as shown in Figure 6, comprising:
Fault localization information acquisition module 101 is used for when the power network line fault, starts protection tripping operation and record trouble distance, obtains fault localization information;
As an embodiment preferably, described first delivery module can will be delivered to the EMS main website with remote mode on the described telecontrol information.
As an embodiment preferably, described power transmission network line fault ranging information is gathered fast with the system that transmits and can also be comprised:
Alarm module, be used for described telecontrol information is delivered to the EMS system after, before whether the action situation of signal satisfies the logic criterion of being scheduled to when judging the line fault tripping operation, in the EMS system, in remote measurement sudden change alarm event mode described fault localization data are handled, produce fault warning information, in time handle to remind the yardman.
As an embodiment preferably, described second delivery module can be sent to described fault localization information on circuit O﹠M personnel's the mobile phone by the note form and with predetermined form.As adopting following note model to send: " line fault ranging information: xx branch during xx month xx day xx, xx station xx kVxx line fault localization S km.”
As an embodiment preferably, can comprise in the described judge module:
Detection module is used for detecting following information from the tabulation of line fault trip signal recording events: contain the alarm signal of four words of fault localization, greater than 0 and less than fault distance kilometer numeral, electric pressure and the corresponding switch scheduling numbering of setpoint distance threshold value;
Logic is judged submodule, is used for according to detected information the signalizing activity situation being carried out logic and judges; Be specially: for the 110kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition: switch disconnects, circuit does not have and presses works, protection action and move appearance simultaneously; And for the 220kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition simultaneously: switch disconnects, circuit does not have and presses works, protection action action, accident and always move appearance simultaneously.
It is identical with the method that transmits with the quick collection of a kind of power transmission network line fault ranging information of the present invention with the other technologies feature of the system that transmits that above-mentioned a kind of power transmission network line fault ranging information is gathered fast, will not give unnecessary details herein.
By above scheme as can be seen, power transmission network line fault ranging information of the present invention is gathered and the method and system that transmit fast, when the power network line fault, can obtain fault localization information fast, and with fault localization information be converted into telecontrol information be uploaded to the EMS system rather than the protection infosystem, thereby made things convenient for dispatching and monitoring operator on duty's information to obtain; And not needing to spend manpower among the present invention patrols and examines to arrive at a station and checks, when the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation, can in the very first time (as 1 minute), send fault localization information to circuit O﹠M personnel, speed is fast, has reduced greatly and has searched the delay of Failure And Recovery supplying time.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a power transmission network line fault ranging information is gathered and the method that transmits fast, it is characterized in that, may further comprise the steps:
During the power network line fault, start protection tripping operation and record trouble distance, obtain fault localization information;
Described fault localization information is converted into telecontrol information, and will delivers to the EMS system on this telecontrol information;
Whether the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation;
If then from described telecontrol information, extract fault localization information and send circuit O﹠M personnel to predetermined form.
2. power transmission network line fault ranging information according to claim 1 is gathered fast and the method that transmits, and it is characterized in that, described the process of delivering to the EMS main website on the telecontrol information is comprised: will deliver to the EMS main website on the described telecontrol information with remote mode.
3. power transmission network line fault ranging information according to claim 2 is gathered and the method that transmits fast, it is characterized in that, described telecontrol information is delivered to the EMS system after, before whether the action situation of judging line fault when tripping operation signal satisfy predetermined logic criterion, also comprise step: in the EMS system, in remote measurement sudden change alarm event mode described fault localization data are handled, produced fault warning information.
4. power transmission network line fault ranging information according to claim 1 is gathered and the method that transmits fast, it is characterized in that, described fault localization information is comprised with the process that predetermined form sends circuit O﹠M personnel to: by the note form and with predetermined form described fault localization information is sent on circuit O﹠M personnel's the mobile phone.
5. gather fast and the method that transmits according to any described power transmission network line fault ranging information of claim 1-4, it is characterized in that, the described process that whether the action situation of signal satisfies predetermined logic criterion when judging the line fault tripping operation comprises:
From line fault trip signal recording events tabulation, detect following information: contain the alarm signal of four words of fault localization, greater than 0 and less than fault distance kilometer numeral, electric pressure and the corresponding switch scheduling numbering of setpoint distance threshold value;
According to detected information the signalizing activity situation being carried out logic judges; Be specially: for the 110kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition: switch disconnects, circuit does not have and presses works, protection action and move appearance simultaneously; And for the 220kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition simultaneously: switch disconnects, circuit does not have and presses works, protection action action, accident and always move appearance simultaneously.
6. a power transmission network line fault ranging information is gathered and the system that transmits fast, it is characterized in that, comprising:
Fault localization information acquisition module is used for when the power network line fault, starts protection tripping operation and record trouble distance, obtains fault localization information;
First delivery module is used for described fault localization information is converted into telecontrol information, and will delivers to the EMS system on this telecontrol information;
Judge module, whether the action situation of signal satisfies predetermined logic criterion when being used for judging the line fault tripping operation;
Second delivery module, the judged result that is used at described judge module is under the situation that is, extracts fault localization information and send circuit O﹠M personnel to predetermined form from described telecontrol information.
7. power transmission network line fault ranging information according to claim 6 is gathered and the system that transmits fast, it is characterized in that described first delivery module will be delivered to the EMS main website with remote mode on the described telecontrol information.
8. power transmission network line fault ranging information according to claim 7 is gathered and the system that transmits fast, it is characterized in that, also comprises:
Alarm module, be used for described telecontrol information is delivered to the EMS system after, before whether the action situation of signal satisfies the logic criterion of being scheduled to when judging the line fault tripping operation, in the EMS system, in remote measurement sudden change alarm event mode described fault localization data are handled, produced fault warning information.
9. power transmission network line fault ranging information according to claim 6 is gathered and the system that transmits fast, it is characterized in that described second delivery module is sent to described fault localization information on circuit O﹠M personnel's the mobile phone by the note form and with predetermined form.
10. gather fast and the system that transmits according to any described power transmission network line fault ranging information of claim 6-9, it is characterized in that, comprise in the described judge module:
Detection module is used for detecting following information from the tabulation of line fault trip signal recording events: contain the alarm signal of four words of fault localization, greater than 0 and less than fault distance kilometer numeral, electric pressure and the corresponding switch scheduling numbering of setpoint distance threshold value;
Logic is judged submodule, is used for according to detected information the signalizing activity situation being carried out logic and judges; Be specially: for the 110kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition: switch disconnects, circuit does not have and presses works, protection action and move appearance simultaneously; And for the 220kV circuit, within the predetermined time, judge whether the circuit identical with detected switch scheduling numbering satisfies following condition simultaneously: switch disconnects, circuit does not have and presses works, protection action action, accident and always move appearance simultaneously.
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| CN103995960A (en) * | 2014-05-05 | 2014-08-20 | 广东电网公司佛山供电局 | Remote control rejection rate analysis method and system |
| CN104092293A (en) * | 2014-06-11 | 2014-10-08 | 国家电网公司 | A self-healing method for fault points of low-voltage power distribution cabinets |
| CN105093042A (en) * | 2015-09-11 | 2015-11-25 | 国家电网公司 | Intelligent transformer station telemechanical system test device based on telemechanical system CID |
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| CN103995960A (en) * | 2014-05-05 | 2014-08-20 | 广东电网公司佛山供电局 | Remote control rejection rate analysis method and system |
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| CN105093042B (en) * | 2015-09-11 | 2019-03-29 | 国家电网公司 | Intelligent substation telecontrol system test device based on telecontrol system CID |
| CN106647358A (en) * | 2016-11-15 | 2017-05-10 | 国电南瑞科技股份有限公司 | Power grid equipment state and event time sequence relation-based switch position change cause identifying method |
| CN106647358B (en) * | 2016-11-15 | 2019-05-31 | 国电南瑞科技股份有限公司 | The switch changed position reason recognition methods of grid equipment state and event-order serie relationship |
| CN113030647A (en) * | 2021-03-15 | 2021-06-25 | 国网江苏省电力有限公司徐州供电分公司 | Active early warning system and method for faults in three-span section of power transmission network line |
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