CN110726964A - Remote diagnosis method based on voltage and current measurement abnormity - Google Patents
Remote diagnosis method based on voltage and current measurement abnormity Download PDFInfo
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- CN110726964A CN110726964A CN201910838171.4A CN201910838171A CN110726964A CN 110726964 A CN110726964 A CN 110726964A CN 201910838171 A CN201910838171 A CN 201910838171A CN 110726964 A CN110726964 A CN 110726964A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a remote diagnosis method for metering abnormity based on voltage and current, and relates to a remote diagnosis method for metering abnormity. At present, voltage and current measurement exception handling is often carried out without exception reason analysis, and dispatch is directly initiated, so that resource waste is caused. The invention comprises the following steps: preliminary diagnosis and remote master station analysis; checking the master station file and the load data when the remote master station analyzes; analyzing the reported abnormal equipment data in the near term according to the generated abnormal equipment work order; when false alarm, sporadic and file data error are determined, the forwarding archive can be left unprocessed, and other failed abnormal work orders try to be processed remotely. According to the technical scheme, the initial diagnosis is firstly carried out, then the remote pretreatment is carried out, the abnormity capable of carrying out remote operation is directly treated, the subsequent field dispatching is reduced, and the labor cost is reduced; the diagnosis result is used for subsequent exception handling, the pertinence of exception handling is increased, the efficiency of handling field exception faults is improved, and the waste of resources is reduced.
Description
Technical Field
The invention relates to a remote diagnosis method for metering abnormity, in particular to a remote diagnosis method for metering abnormity based on voltage and current.
Background
Along with the year-by-year improvement of the construction scale and the coverage rate of the acquisition system, the application field of the acquisition system is gradually enlarged, the application effect is obviously improved, the acquisition operation and maintenance closed-loop management function is used as a module of the power consumption information acquisition master station system, the real-time operation and maintenance monitoring of important information such as user load, electric quantity, voltage, current and the like is realized by establishing an acquisition operation and maintenance closed-loop service flow and a field operation standardized specification, and basic data is timely and accurately provided for other service systems. The power utilization information acquisition system in the prior art generally cannot make full use of advanced technologies such as big data, the Internet of things and a wireless communication network, and is single in system function and generally only has an acquisition function and basic data analysis and calculation functions. The existing voltage and current metering abnormal method has the defects that remote processing is not used or is only used for inquiring historical data, an effective analysis and diagnosis guide is lacked, so that personnel directly initiate dispatching under the condition of not analyzing abnormal reasons, or directly initiate a terminal replacement or an ammeter replacement process, resource waste is caused, the field abnormal fault is not favorably processed, and the voltage and current abnormal processing efficiency is influenced.
Disclosure of Invention
The technical problem to be solved and the technical task provided by the invention are to perfect and improve the prior technical scheme and provide a voltage and current measurement abnormity-based remote diagnosis method so as to achieve the purpose of improving the voltage and current abnormity processing efficiency. Therefore, the invention adopts the following technical scheme.
A remote diagnosis method based on voltage and current measurement abnormity is characterized by comprising the following steps:
1) acquiring the generated abnormal work order;
2) performing primary diagnosis; the system monitors voltage and current type metering abnormity, remotely diagnoses a user event failure work order, classifies the user event failure work order according to equipment, extracts details of voltage and current type abnormal failure, and generates a voltage and current type metering abnormity remote diagnosis work order;
3) the remote master station analyzes and checks the master station file and the load data; analyzing the reported abnormal equipment data in the near term according to the generated abnormal equipment work order; when false alarm, sporadic and file data error are determined, the remote diagnosis processing comprises the following contents:
301) calling whether the data of the electric meter is abnormal or not, and if so, entering step 306); if not, go to step 302);
302) judging whether the voltage change at the same point is related to the current, if so, entering step 306); if not, go to step 303);
303) judging whether the voltage-loss phase current is gradually reduced, if so, entering step 306); if not, go to step 304);
304) judging whether the voltage of the voltage-loss phase is obviously reduced compared with the normal voltage, if so, entering step 306); if not, go to step 305);
305) judging whether the corresponding phase voltage of the calling terminal is abnormal or not, and if so, entering step 306); if not, go to step 310);
306) initiating a special inspection process and making remark basic judgment;
307) judging whether the load data is completely cleared; if yes, go to step 309); if not, go to step 308);
308) issuing a measuring point parameter re-throwing task; then step 309) is entered;
309) remotely diagnosing a recovery condition; if the remote processing is successful and the unrecovered dispatch is sent to the field processing, the restored dispatch can be filed and finished;
310) initiating a field processing flow; when the field processing is completed, field feedback is performed and step 309) is entered.
According to the technical scheme, a closed-loop management flow from abnormity discovery, remote diagnosis and dispatching to field processing is adopted, a big data technology is combined, a voltage and current type metering abnormity remote diagnosis flow is constructed, the running state of metering equipment is diagnosed and analyzed by collecting and processing electric energy meter data of a main station, and technical means such as data comparison, statistical analysis and data mining in the main station of a collection system, whether the metering equipment is in a normal running state is judged, and an auxiliary decision making function is realized.
As a preferable technical means: in step 301), the load data of the electric meter is called, if the load data is abnormal, whether the load data is cleared or not is checked, if the load data is abnormal, whether the abnormality is recovered or not is further judged, and the unrecovered electric meter is dispatched to a site for processing; and issuing a measuring point parameter re-projection task without resetting the load data, restoring to be filed, dispatching the unrecovered load data to a field for processing, and restoring to be filed.
As a preferable technical means: in step 301), calling and testing self data and meter data of the terminal; comparing self data of the calling and testing terminal with meter data, if the terminal data is normal, primarily judging the terminal data to be a wiring problem or a meter problem, dispatching to a field for processing and checking, and if the terminal data is the wiring or meter problem, performing field adjustment; and archiving after processing and recovery.
As a preferable technical means: in step 302), checking the voltage and current changes at the same point when judging whether the voltage and current changes at the same point are related; if the voltage of the three phases changes current obviously along with the three-phase balance condition, the phase voltage with large current is reduced obviously, and the phase voltage with small current is increased obviously, the suspected neutral point drift is judged to cause the three-phase voltage difference, a special inspection process is initiated, and basic judgment is remarked; if the voltage is found to be normal sometimes and low sometimes, the voltage loop is judged to be in poor contact and unstable in voltage, and the voltage loss starting time and the recovery time can be called, or when the voltage is low and not recovered to be normal, the voltage is recovered to be normal and stable by carrying out measurement loop reconstruction after the field inspection.
As a preferable technical means: in step 303), checking for a loss of voltage phase change; if the voltage of the voltage loss phase is gradually reduced, the situation that a primary side fuse of the voltage transformer is fused, or a voltage sampling line of the current transformer is fused due to overheating or other voltage connectivity faults is judged.
As a preferable technical means: in step 304), looking for a no-voltage phase current change; if the current data of the voltage-loss phase is obviously reduced compared with the data before voltage loss, the fault of the primary side of the power supply is judged to be possible, the drop-out fuse wire is fused or the fault of low voltage of the high-voltage line is possible.
As a preferable technical means: the method also comprises a preparation step, wherein the preparation step is used for establishing a voltage and current metering abnormity diagnosis calculation model; and the remote master station analyzes and judges according to the voltage and current measurement abnormity diagnosis calculation model.
As a preferable technical means: the voltage and current metering abnormity diagnosis and calculation model comprises a voltage open-phase diagnosis model used for diagnosing whether the voltage open-phase exists or not; the diagnosis method comprises the following steps:
A) three-phase three-wire phase loss: any phase voltage in the AC phase is less than K reference voltage, and the other phase voltage is not less than K reference voltage; k is a coefficient;
B) three-phase four-wire phase loss: any phase voltage is less than K reference voltage, and any phase voltage in the other two phases of voltages is not less than K reference voltage; k is a coefficient;
C) monitoring a plurality of points in one day; if the electric energy meter or the terminal is monitored to have a voltage phase failure event at the same time, generating voltage phase failure abnormity immediately, otherwise, generating abnormity when the data diagnosis requirement is met for 3 consecutive days.
As a preferable technical means: in step c), 3 points need to be monitored in one day; k is 60%.
Has the advantages that:
the technical scheme is based on a voltage and current type metering abnormity remote diagnosis method, and a closed-loop management process from abnormity discovery, remote diagnosis, dispatching to field processing is realized; the closed-loop management flow realizes operation and maintenance closed-loop management, acquires voltage and current field abnormal data, ensures the accuracy of the field data, and feeds back the abnormal data to the acquisition master station in time when the abnormal data occurs, so that the acquisition operation and maintenance closed-loop management system can effectively support the data of the acquisition system, and the satisfaction degree of a user is greatly improved.
When the technical scheme is used for remotely processing voltage and current metering abnormity, guided abnormity analysis and diagnosis can be realized, the file data of the main station is inquired, whether the data of the ammeter is abnormal or not and the voltage and current power data of the terminal are inquired directly, and the data reported recently can be compared, so that the abnormal reason is effectively judged, and the efficiency of voltage and current abnormity processing is greatly improved.
According to the technical scheme, the initial diagnosis is firstly carried out, then the remote pretreatment is carried out, the abnormity capable of carrying out remote operation is directly treated, the subsequent field dispatching is reduced, and the labor cost is reduced; the diagnosis result is used for subsequent exception handling, the pertinence of exception handling is increased, the efficiency of handling field exception faults is improved, the handling mode of directly initiating a terminal replacement or ammeter replacement process is reduced, and the waste of resources is reduced.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a remote diagnostic flow diagram of the present invention.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
According to the remote diagnosis condition of the voltage and current metering abnormity pushed by the online monitoring system of the metering device, the remote diagnosis abnormity monitoring, intelligent analysis, field processing and other abnormity processing of the voltage and current metering abnormity are completed.
As shown in fig. 1, the overall closed-loop process is:
1) diagnosing and analyzing voltage and current abnormity;
2) generating a work order;
3) remote analysis;
4) judging whether the data is misinformed or wrong; if yes, ending; if not, performing field processing;
5) after the field processing is finished, the field feedback is carried out;
6) verifying the result;
7) judging whether the abnormality is resolved; if yes, ending, if not, entering field processing, and returning to the step 5) until the abnormity is solved.
According to the technical scheme, a voltage and current metering abnormity remote diagnosis process is constructed by combining a big data technology, the operation state of the metering equipment is diagnosed and analyzed by collecting and processing the electric energy meter data of the main station and carrying out data comparison, statistical analysis, data mining and other technical means in the main station of the collection system, whether the metering equipment is in a normal operation state is judged, and an auxiliary decision making function is realized. The implementation process comprises the following steps: the method comprises the steps of acquiring electric energy meter metering data information of an electric energy meter of a collection master station and electric energy meters of collection terminals, such as equipment operation conditions, voltage curve data, current curve data and the like. And (3) checking the master station file and load data based on voltage and current metering abnormity remote diagnosis and analysis, and analyzing and judging the voltage and current abnormity phenomenon by combining voltage, current and electric quantity changes. The analysis results of the voltage, the current, the electric quantity and the load data can find the abnormalities of voltage phase failure, voltage out-of-limit, current loss, current imbalance, voltage imbalance and the like, and the abnormal historical data analysis can carry out parameter adjustment, or the field equipment can be analyzed and adjusted by combining the operation condition of the field equipment. And performing field adjustment aiming at the abnormality of the field operation equipment, and performing field processing feedback through dispatching to a field process. The method greatly improves the steps of the abnormal handling field and finds the source of the problem in a targeted manner, thereby better improving the field operation and maintenance efficiency.
Specifically, as shown in fig. 2, the present invention includes the following steps:
1) acquiring the generated abnormal work order;
2) performing primary diagnosis; the system monitors voltage and current type metering abnormity, remotely diagnoses a user event failure work order, classifies the user event failure work order according to equipment, extracts details of voltage and current type abnormal failure, and generates a voltage and current type metering abnormity remote diagnosis work order;
3) the remote master station analyzes and checks the master station file and the load data; analyzing the reported abnormal equipment data in the near term according to the generated abnormal equipment work order; when false alarm, sporadic and file data error are determined, the remote diagnosis processing comprises the following contents:
301) calling whether the data of the electric meter is abnormal or not, and if so, entering step 306); if not, go to step 302);
302) judging whether the voltage change at the same point is related to the current, if so, entering step 306); if not, go to step 303);
303) judging whether the voltage-loss phase current is gradually reduced, if so, entering step 306); if not, go to step 304);
304) judging whether the voltage of the voltage-loss phase is obviously reduced compared with the normal voltage, if so, entering step 306); if not, go to step 305);
305) judging whether the corresponding phase voltage of the calling terminal is abnormal or not, and if so, entering step 306); if not, go to step 310);
306) initiating a special inspection process and making remark basic judgment;
307) judging whether the load data is completely cleared; if yes, go to step 309); if not, go to step 308);
308) issuing a measuring point parameter re-throwing task; then step 309) is entered;
309) remotely diagnosing a recovery condition; if the remote processing is successful and the unrecovered dispatch is sent to the field processing, the restored dispatch can be filed and finished;
310) initiating a field processing flow; when the field processing is completed, field feedback is performed and step 309) is entered.
The following further explains the specific embodiments. In the present embodiment, it includes the following:
1. and establishing a voltage and current measurement abnormity diagnosis calculation model. Such as voltage phase failure diagnostics.
2. And (5) performing primary diagnosis. The system monitors the work order of remote diagnosis of the user event failure due to the voltage and current measurement abnormity, classifies the work order according to equipment, extracts details of the voltage and current measurement abnormity failure, and generates a work order of remote diagnosis of the voltage and current measurement abnormity.
3. And (5) analyzing by the remote master station, and checking the master station file and the load data. Analyzing recently reported abnormal equipment data according to the generated abnormal equipment work order, determining that the abnormal equipment data is mistaken, sporadic and wrong in archive data and can be forwarded to be filed without processing, and trying to remotely process other failed abnormal work orders, wherein the remote diagnosis process comprises the following contents:
(1) calling the load data of the electric meter. If the load data is abnormal, checking whether the load data is reset or not, if so, further judging whether the abnormality is recovered or not, and dispatching the unrecovered load data to a field for processing; and issuing a measuring point parameter re-projection task without resetting the load data, restoring to be filed, dispatching the unrecovered load data to a field for processing, and restoring to be filed.
(2) And calling and testing self data and meter data of the terminal. And comparing the data of the calling and testing terminal with meter data, if the terminal data is normal, primarily judging the terminal data to be a wiring problem or a meter problem, dispatching to a field for processing and checking, performing field adjustment on the wiring or meter problem, and filing after processing and recovery.
(3) And checking the voltage and current change at the same point. If the voltage of the three phases changes current obviously along with the balance condition of the three phases, the voltage of the phase with large current is reduced obviously, the voltage of the phase with small current is increased obviously, and the suspected neutral point drift causes the difference of the three-phase voltage, a special inspection process is initiated and basic judgment is remarked; if the voltage is found to be normal sometimes and low sometimes, the voltage loop is considered to be in poor contact, the voltage is unstable, the voltage loss starting time and the voltage recovery time can be called, or when the voltage is low and not recovered to be normal, the voltage is recovered to be normal and stable after the field inspection is carried out and the metering loop is modified.
(4) The loss voltage phase change was examined. If the voltage of the voltage loss phase is gradually reduced, the situation that a primary side fuse of the voltage transformer is fused, or a voltage sampling line of the current transformer is fused due to overheating or other voltage connectivity faults is judged.
(5) And checking the voltage-loss phase current change. If the current data of the voltage-loss phase is obviously reduced compared with the data before voltage loss, the fault that the primary side of the power supply fails, the drop-out fuse wire is fused, the voltage of a high-voltage line is low and the like is probably judged.
A recovery condition is remotely diagnosed. If the remote processing is successful and the unrecovered dispatch is sent to the field processing, the restored dispatch can be archived.
The method for remote diagnosis of voltage and current based metering anomaly as shown in fig. 1 and 2 is a specific embodiment of the present invention, which already embodies the essential features and advances of the present invention, and can make equivalent modifications in shape, structure, etc. according to the practical needs of use, and is within the scope of the present invention.
Claims (9)
1. A remote diagnosis method based on voltage and current measurement abnormity is characterized by comprising the following steps:
1) acquiring the generated abnormal work order;
2) performing primary diagnosis; the system monitors voltage and current type metering abnormity, remotely diagnoses a user event failure work order, classifies the user event failure work order according to equipment, extracts details of voltage and current type abnormal failure, and generates a voltage and current type metering abnormity remote diagnosis work order;
3) the remote master station analyzes and checks the master station file and the load data; analyzing the reported abnormal equipment data in the near term according to the generated abnormal equipment work order; when false alarm, sporadic and file data error are determined, the remote diagnosis processing comprises the following contents:
301) calling whether the data of the electric meter is abnormal or not, and if so, entering step 306); if not, go to step 302);
302) judging whether the voltage change at the same point is related to the current, if so, entering step 306); if not, go to step 303);
303) judging whether the voltage-loss phase current is gradually reduced, if so, entering step 306); if not, go to step 304);
304) judging whether the voltage of the voltage-loss phase is obviously reduced compared with the normal voltage, if so, entering step 306); if not, go to step 305);
305) judging whether the corresponding phase voltage of the calling terminal is abnormal or not, and if so, entering step 306); if not, go to step 310);
306) initiating a special inspection process and making remark basic judgment;
307) judging whether the load data is completely cleared; if yes, go to step 309); if not, go to step 308);
308) issuing a measuring point parameter re-throwing task; then step 309) is entered;
309) remotely diagnosing a recovery condition; if the remote processing is successful and the unrecovered dispatch is sent to the field processing, the restored dispatch can be filed and finished;
310) initiating a field processing flow; when the field processing is completed, field feedback is performed and step 309) is entered.
2. The remote diagnosis method based on the voltage current class metering abnormity according to the claim 1, characterized in that: in step 301), the load data of the electric meter is called, if the load data is abnormal, whether the load data is cleared or not is checked, if the load data is abnormal, whether the abnormality is recovered or not is further judged, and the unrecovered electric meter is dispatched to a site for processing; and issuing a measuring point parameter re-projection task without resetting the load data, restoring to be filed, dispatching the unrecovered load data to a field for processing, and restoring to be filed.
3. The remote diagnosis method based on the voltage current class metering abnormity according to claim 2, characterized by comprising the following steps: in step 301), calling and testing self data and meter data of the terminal; comparing self data of the calling and testing terminal with meter data, if the terminal data is normal, primarily judging the terminal data to be a wiring problem or a meter problem, dispatching to a field for processing and checking, and if the terminal data is the wiring or meter problem, performing field adjustment; archiving after processing and recovery; .
4. The remote diagnosis method based on the voltage current class metering abnormity according to the claim 1, characterized in that: in step 302), checking the voltage and current changes at the same point when judging whether the voltage and current changes at the same point are related; if the voltage of the three phases changes current obviously along with the three-phase balance condition, the phase voltage with large current is reduced obviously, and the phase voltage with small current is increased obviously, the suspected neutral point drift is judged to cause the three-phase voltage difference, a special inspection process is initiated, and basic judgment is remarked; if the voltage is found to be normal sometimes and low sometimes, the voltage loop is judged to be in poor contact and unstable in voltage, and the voltage loss starting time and the recovery time can be called, or when the voltage is low and not recovered to be normal, the voltage is recovered to be normal and stable by carrying out measurement loop reconstruction after the field inspection.
5. The remote diagnosis method based on the voltage current class metering abnormity according to the claim 1, characterized in that: in step 303), checking for a loss of voltage phase change; if the voltage of the voltage loss phase is gradually reduced, the situation that a primary side fuse of the voltage transformer is fused, or a voltage sampling line of the current transformer is fused due to overheating or other voltage connectivity faults is judged; .
6. The remote diagnosis method based on the voltage current class metering abnormity according to claim 5, characterized in that: in step 304), looking for a no-voltage phase current change; if the current data of the voltage-loss phase is obviously reduced compared with the data before voltage loss, the fault of the primary side of the power supply is judged to be possible, the drop-out fuse wire is fused or the fault of low voltage of the high-voltage line is possible.
7. The remote diagnosis method based on the voltage current class metering abnormity according to the claim 1, characterized in that: the method also comprises a preparation step, wherein the preparation step is used for establishing a voltage and current metering abnormity diagnosis calculation model; and the remote master station analyzes and judges according to the voltage and current measurement abnormity diagnosis and calculation model.
8. The remote diagnosis method based on the voltage current class metering abnormity according to claim 7, characterized in that: the voltage and current metering abnormity diagnosis and calculation model comprises a voltage open-phase diagnosis model used for diagnosing whether the voltage open-phase exists or not; the diagnosis method comprises the following steps:
A) three-phase three-wire phase loss: any phase voltage in the AC phase is less than K reference voltage, and the other phase voltage is not less than K reference voltage; k is a coefficient;
B) three-phase four-wire phase loss: any phase voltage is less than K reference voltage, and any phase voltage in the other two phases of voltages is not less than K reference voltage; k is a coefficient;
C) monitoring a plurality of points in one day; if the electric energy meter or the terminal is monitored to have a voltage phase failure event at the same time, generating voltage phase failure abnormity immediately, otherwise, generating abnormity when the data diagnosis requirement is met for 3 consecutive days.
9. The remote diagnosis method based on the voltage current class metering abnormity according to the claim 8, characterized in that: in step c), 3 points need to be monitored in one day; k is 60%.
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