CN110932391B - Method and system for identifying tripping of feeder switch in station - Google Patents
Method and system for identifying tripping of feeder switch in station Download PDFInfo
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- CN110932391B CN110932391B CN201911069146.0A CN201911069146A CN110932391B CN 110932391 B CN110932391 B CN 110932391B CN 201911069146 A CN201911069146 A CN 201911069146A CN 110932391 B CN110932391 B CN 110932391B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a tripping identification method and a tripping identification system for an in-station feeder switch, wherein the method comprises the following steps: step S1, after receiving a tripping signal, performing logic multiple times to judge whether tripping is true tripping or not; step S2, judging the tripping type according to the received other signals, filtering the other signals of the same station in a certain time period before and after the tripping signal, if the signals contain corresponding keywords, judging that the tripping is grounded tripping, if the signals do not contain corresponding keywords, judging that the tripping is short-circuit tripping; and step S3, judging the current reclosing action condition according to the reclosing state in the line. By implementing the invention, the situations of misjudgment and missed judgment are effectively avoided, the accuracy is further improved, the information acquired by the system in real time is utilized for logic judgment, and the tripping switch is discovered and alarmed in time.
Description
Technical Field
The invention belongs to the field of power monitoring, and relates to a method station and a system for identifying tripping of a feeder switch in a station.
Background
At present, the authenticity of the feeder tripping information is manually judged by a dispatcher after the feeder tripping information is sent to an alarm window, the dispatcher records a dispatch log after the tripping information is determined, and then the power failure information is automatically transmitted to customer service personnel, so that the problem of untimely monitoring exists, and the problem of untimely recording of a large number of feeder tripping in typhoon weather in a short time also exists.
The existing processing flow and mode influence the customer service level, the processing of the power grid fault problem depends on the time for transmitting power grid operation information, and if the power failure preliminary information cannot be actively provided for a customer service center within 5 minutes after the fault occurs, a series of problems such as follow-up processing are directly influenced.
At present, related functional algorithms exist in domestic power grid enterprises, but some data used by the algorithms are not universal, and the algorithms are not fine enough and have insufficient accuracy.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a tripping identification method and a tripping identification system for an in-station feeder switch, which solve the problems that after a fault occurs, the system is not synchronous in time, a tripping switch cannot be found in time, or the accuracy is not high.
The invention provides a tripping identification method of an in-station feeder switch, which specifically comprises the following steps:
step S1, after receiving a tripping signal, performing logic multiple times to judge whether tripping is true tripping or not;
step S2, judging the tripping type according to the received other signals, filtering the other signals of the same station in a certain time period before and after the tripping signal, if the signals contain corresponding keywords, judging that the tripping is grounded tripping, if the signals do not contain corresponding keywords, judging that the tripping is short-circuit tripping;
and step S3, judging the current reclosing action condition according to the reclosing state in the line.
Further, in step S1, the multiple logic determining whether the trip is a real trip specific process includes determining whether the line is put into operation, determining whether the line is put into operation according to the ring network diagram information, if the ring network diagram system cannot find the line or find the line but the line does not have any graphics device, determining that the line is not put into operation, determining that the signal is not tripped, marking the signal as not put into operation, if the ring network diagram system finds the line and has graphics device, determining that the line is put into operation, and continuing to perform the next determination.
Further, in step S1, the multiple logic determining whether the trip is a real trip specific process further includes determining that the trip switch is currently in an operating state in the ring network diagram, further determining that the trip switch is currently in the ring network diagram for the line determined to be put into operation, if the state of the switch is non-operating, determining that the signal is non-trip, marking the signal as a debug signal, if the state of the switch is operating, determining that the signal is non-debug, and performing the next determination.
Further, in step S1, the multiple logic determines whether the trip is a real trip, and further includes determining whether a planned maintenance work is scheduled for a switch having a trip signal, and determining whether a planned maintenance work is scheduled for a switch having a determined signal as not being commissioned, if a planned outage start time for which the switch is scheduled to be shut down and an approved outage start time has been passed is queried in the production management system, determining that the signal is due to a field operation, determining that the signal is not a trip, marking the signal as a planned operation, if a planned outage start time for which the switch is scheduled to be shut down and an approved outage start time has not been queried, determining that the signal is a real trip, and marking the signal as a trip.
Further, in step S2, the time period before and after the trip signal is specifically 10 seconds before and after the trip signal time.
Further, in step S3, the step of determining the current reclosing action condition includes determining whether the reclosing is in the put-in state, reading the current state of the circuit reclosing in the ring network graph, if there is no enabling or exiting information in the reclosing state information, determining that the reclosing type is not put in the reclosing state, if there is no enabling or exiting information in the reclosing state information, determining that the reclosing is in the put-in state.
Further, in the step S3, the step of determining the current reclosing action condition includes determining whether the reclosing is operated after tripping, for determining whether the reclosing is operated after tripping by further using other received signals, detecting whether other signals within 10 seconds before and after the tripping signal have key information of the reclosing, if not, determining that the reclosing is not operated, and if so, determining that the reclosing is operated.
Further, in the step S3, the step of determining whether the reclosing operation is successful includes determining whether the reclosing operation is successful, and determining that the reclosing is unsuccessful if there is no closing signal or there is both closing signal and accident opening signal if there is only closing signal in the signals according to other signals of the same switch interval within 10 seconds before and after the trip signal.
The invention also provides a system for identifying tripping of the feeder switch in the station, which is used for realizing the method, and comprises the following steps:
the intelligent alarm module is used for acquiring information such as line production, switch positions, reclosing switching and the like in the distribution network ring network diagram system, acquiring planned maintenance information in the production management system, acquiring a real-time signal file in the SCADA system, analyzing the real-time signal file, judging the acquired information, directly neglecting false tripping, and automatically completing dispatch log record after further judging tripping type and reclosing action condition for true tripping.
Further, the intelligent alarm module acquires a signal file of the SCADA system every 1 minute through a timer and analyzes the signal file, and the SCADA system is a real-time data acquisition and monitoring control system for power production.
The embodiment of the invention has the following beneficial effects:
the method and the system for identifying the tripping operation of the feeder switch in the station provided by the embodiment of the invention adopt a mode of combining ring network diagram information and overhaul information, take the existing data as a judgment basis, effectively filter various false tripping operation, comprehensively detect various abnormal conditions, set reasonable parameters, effectively avoid the conditions of misjudgment and missed judgment, further improve the accuracy, utilize the information acquired by the system in real time to carry out logic judgment, and timely find and alarm the tripping operation switch.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
Fig. 1 is a schematic diagram of a main flow of a trip identification method of an in-station feeder switch provided by the invention.
Fig. 2 is a schematic diagram of an architecture of the in-station feeder switch trip identification system provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1, a schematic diagram of an embodiment of a method for identifying tripping of an in-station feeder switch provided by the present invention is shown, in this embodiment, the method specifically includes the steps of:
step S1, after receiving a tripping signal, performing logic multiple times to judge whether tripping is true tripping or not;
in a specific embodiment, the multiple logic judging whether the tripping is a real tripping specific process includes judging whether the circuit is put into operation or not, judging whether the circuit is put into operation according to ring network diagram information, if the ring network diagram system cannot find the circuit or find the circuit but the circuit does not have any graphic equipment, judging that the circuit is not put into operation, determining that the signal is not tripped, marking the signal as not put into operation, if the ring network diagram system finds the circuit and the graphic equipment exists, judging that the circuit is put into operation, and continuing to perform the next judgment;
specifically, the multiple logic judging whether the tripping operation is the actual tripping operation or not further comprises judging the current running state of the tripping switch in the ring network diagram, further judging the current state of the tripping switch in the ring network diagram for the circuit judged to be put into production, if the state of the switch is non-running, judging that the signal is non-tripping, marking the signal as a debugging signal, if the state of the switch is running, judging that the signal is non-debugging signal, and carrying out the next judgment;
specifically, the multiple logic judges whether the tripping is actually tripping, and judges whether the switch with the tripping signal is scheduled to have a scheduled maintenance work, and if the switch with the tripping signal is judged to be non-tripping, whether the switch with the tripping signal is scheduled to have a scheduled maintenance work, if the switch is inquired in the production management system that the switch is scheduled to be stopped and the approved power failure starting time is passed, the signal is judged to be non-tripping due to field operation, the signal is marked as the scheduled operation, if the switch with the tripping signal is not inquired that the switch is scheduled to be stopped and the approved power failure starting time is passed, the signal is judged to be actually tripping, and the signal is marked as tripping.
Step S2, judging the tripping type according to the received other signals, filtering the other signals of the same station in a certain time period before and after the tripping signal, if the signals contain corresponding keywords, judging that the tripping is grounded tripping, if the signals do not contain corresponding keywords, judging that the tripping is short-circuit tripping;
in a specific embodiment, the time period is 10 seconds before and after the trip signal time, the time setting is reasonable, and the time period cannot be set too long or too short; if the signal is too long, the signals which are not related to the tripping are considered, and if the signal is too short, the signals cannot be screened out due to unstable signal sending channels and the like, so that judgment errors are caused; and comprehensively counting the time length of the signal up-sending delay under various conditions, and setting the time length to be 10 seconds before and after the trip signal time.
And step S3, judging the current reclosing action condition according to the reclosing state in the line.
In a specific embodiment, the step of judging the current reclosing action condition includes judging whether the reclosing is in a put-in state or not, reading the current state of the circuit reclosing in the ring network graph, if there is non-enabling or exiting information in the reclosing state information, judging that the reclosing type is not put-in, and if there is no non-enabling or exiting information in the reclosing state information, judging that the reclosing is in the put-in state;
specifically, the step of judging whether the reclosing after tripping is operated in the specific process of judging the current reclosing operation condition comprises the steps of judging whether the reclosing after tripping is operated, further judging whether the reclosing after tripping is operated by using other received signals, detecting whether other signals before and after the tripping signal have key information of the reclosing or not, judging that the reclosing is not operated if the key information is not operated, and judging that the reclosing is operated if the key information is not operated;
specifically, the step of judging the current reclosing action condition includes judging whether the reclosing is successful or not, judging whether the reclosing is successful or not according to other signals of the same switch interval within 10 seconds before and after the tripping signal, if only the switching signal is in the signals, judging that the reclosing is successful, and if no switching signal is in the signals or both the switching signal and the accident switching signal are in the signals, judging that the reclosing is unsuccessful.
As shown in fig. 2, the present embodiment further provides an in-station feeder switch trip identification system, configured to implement the following method:
after receiving a tripping signal, logic is carried out for a plurality of times to judge whether the tripping is true tripping or not;
judging the tripping type according to the received other signals, filtering the other signals of the same station in a certain time period before and after the tripping signal, if the signals contain corresponding keywords, judging that the tripping is grounded tripping, if the signals do not contain corresponding keywords, judging that the tripping is short-circuit tripping;
and judging the current reclosing action condition according to the reclosing state in the line.
The system specifically comprises an intelligent alarm module, a control module and a control module, wherein the intelligent alarm module is used for acquiring information such as line production, switch positions, reclosing switching and the like in a distribution network looped network diagram system, acquiring planned maintenance information in a production management system, acquiring a real-time signal file in a SCADA system and analyzing the real-time signal file, judging the acquired information, directly neglecting false tripping, further judging tripping type and reclosing action condition, and automatically completing dispatch log record.
In a specific embodiment, the intelligent alarm module acquires the signal file of the SCADA system every 1 minute through a timer, and analyzes the signal file.
The in-station feeder switch tripping identification system provided by the invention adopts a mode of combining ring network diagram information and overhaul information, takes data which is originally available in the existing system and has high accuracy as a judgment basis, effectively filters various false tripping, comprehensively considers various abnormal conditions, sets reasonable parameters, effectively avoids misjudgment and missed judgment, and improves the accuracy to 99.5%; when the conventional other algorithms are used for filtering maintenance operation or debugging operation, the work load of a dispatcher is increased, misjudgment is caused by missing of the hanging, the situation that the next tripping signal can be missed after the hanging is forgotten to pick the card is caused, meanwhile, the other algorithms are insufficient in consideration of certain conditions, the parameter setting is unreasonable, the algorithm judgment accuracy is low, and the highest judgment accuracy is only about 90.1%.
For further details, reference is made to the foregoing description of the drawings, which is not described in detail herein.
The embodiment of the invention has the following beneficial effects:
the method and the system for identifying the tripping operation of the feeder switch in the station provided by the embodiment of the invention adopt a mode of combining ring network diagram information and overhaul information, take the existing data as a judgment basis, effectively filter various false tripping operation, comprehensively detect various abnormal conditions, set reasonable parameters, effectively avoid the conditions of misjudgment and missed judgment, further improve the accuracy, utilize the information acquired by the system in real time to carry out logic judgment, and timely find and alarm the tripping operation switch.
The above disclosure is only a preferred embodiment of the present invention, and it is needless to say that the scope of the invention is not limited thereto, and therefore, the equivalent changes according to the claims of the present invention still fall within the scope of the present invention.
Claims (7)
1. An in-station feeder switch trip identification method is characterized by comprising the following steps:
step S1, after receiving a tripping signal, performing logic multiple times to judge whether tripping is true tripping or not;
step S2, judging the tripping type according to the received other signals, filtering the other signals of the same station in a certain time period before and after the tripping signal, if the signals contain corresponding keywords, judging that the tripping is grounded tripping, if the signals do not contain corresponding keywords, judging that the tripping is short-circuit tripping;
step S3, judging the current reclosing action condition according to the reclosing state in the line;
in step S1, the multiple logic determining whether the trip is in a real tripping specific process includes determining whether the line is put into production, determining whether the line is put into production according to the ring network diagram information, if the ring network diagram system cannot find the line or find the line but does not have any graphic device, determining that the line is not put into production, determining that the signal is non-trip, marking the signal as not put into production, if the ring network diagram system finds the line and has graphic device, determining that the line is put into production, and continuing to perform the next determination; the method comprises the steps of judging the current running state of a tripping switch in a ring network diagram, further judging the current state of the tripping switch in the ring network diagram for a line judged to be put into production, judging that the signal is non-tripping if the state of the switch is non-running, marking the signal as a debugging signal if the state of the switch is running, judging that the signal is non-debugging signal, and carrying out the next judgment; and judging whether a switch with a tripping signal is scheduled to carry out maintenance work or not, if the switch is inquired in the production management system, the switch is scheduled to stop and the approved power failure starting time is passed, judging that the signal is caused by field operation, judging that the signal is not tripped, marking the signal as the scheduled operation, if the switch is not inquired, the switch is scheduled to stop and the approved power failure starting time is passed, judging that the signal is truly tripped, and marking the signal as the tripping.
2. The method according to claim 1, characterized in that in step S2 the time period before and after is in particular 10 seconds before and after the trip signal time.
3. The method of claim 2, wherein in step S3, the step of determining the current reclosing action condition includes determining whether the reclosing is in an input state, reading a current state of line reclosing in the ring network graph, if there is no enabling or exiting information in the reclosing state information, determining that the reclosing type is not to be switched on, if there is no disabling or exiting information in the reclosing state information, and determining that the reclosing is in the input state.
4. The method as claimed in claim 3, wherein in the step S3, the step of determining the current reclosing action includes determining whether the reclosing is operated after the trip, for determining the reclosing in the input state, further determining whether the reclosing is operated after the trip by using the received other signals, detecting whether the other signals within 10 seconds before and after the trip signal have key information of the reclosing, if not, determining that the reclosing is not operated, and if so, determining that the reclosing is operated.
5. The method as claimed in claim 4, wherein in the step S3, the step of determining the current reclosing operation condition includes determining whether the reclosing is successful, determining that the reclosing is unsuccessful if there is only a closing signal in the signals according to other signals of the same switching interval within 10 seconds before and after the trip signal, and determining that the reclosing is unsuccessful if there is no closing signal or there is both a closing signal and an accident opening signal.
6. An in-station feeder switch trip identification system for implementing the method of any one of claims 1 to 5, the system comprising:
the intelligent alarm module is used for acquiring the information of line production, switch position and reclosing switching in the distribution network ring network diagram system, acquiring the planned maintenance information in the production management system, acquiring the real-time signal file in the SCADA system, analyzing the real-time signal file, judging the acquired information, directly neglecting false tripping, and automatically completing the dispatch log record after further judging the tripping type and the reclosing action condition for true tripping.
7. The system of claim 6, wherein the intelligent warning module obtains the signal file of the SCADA system every 1 minute via a timer and parses the signal file.
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| CN112653236B (en) * | 2020-12-11 | 2023-03-24 | 深圳供电局有限公司 | Method for studying and judging alarm information inside and outside transformer substation and storage medium |
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