CN112018887A - Distribution network feeder automatic operation process supervision and analysis method - Google Patents
Distribution network feeder automatic operation process supervision and analysis method Download PDFInfo
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- CN112018887A CN112018887A CN202010829731.2A CN202010829731A CN112018887A CN 112018887 A CN112018887 A CN 112018887A CN 202010829731 A CN202010829731 A CN 202010829731A CN 112018887 A CN112018887 A CN 112018887A
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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
- H02J13/00001—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 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- 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
- H02J13/00002—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 characterised by monitoring
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a method for supervising and analyzing the automatic operation process of a distribution network feeder, which comprises the following steps: (1) the distribution network processing data is read; (2) analyzing a feeder automation line; (3) automatically starting analysis by a feeder; (4) judging and analyzing the fault property; (5) automatically performing situation analysis; (6) analyzing the effectiveness of fault positioning; (7) analyzing the accuracy of a fault area; (8) and carrying out isolation transfer for strategy execution condition analysis. The method effectively checks whether the instruction generation, the information transmission and the instruction execution are correct in the operation process of the distribution network FA; and by combining the on-site line patrol result, the abnormal conditions such as distribution network FA starting failure, positioning failure and the like are analyzed in a refined and continuous manner, the problem source is given, and a basis is provided for perfecting the functions and the management system of the distribution automation system.
Description
Technical Field
The invention relates to the field of distribution network feeder automation, in particular to a method for supervising and analyzing an automatic operation process of a distribution network feeder.
Background
Distribution network Feeder Automation (FA) is a core function of a distribution Automation system, and is an effective means and an important guarantee for improving distribution network power supply reliability and reducing load loss. In a power distribution automation system, an FA is closely connected with modules such as a power distribution data acquisition and monitoring control system, a high-level application and a front channel, the power distribution automation system platform is connected with a dispatching automation system platform and a power distribution terminal through devices such as isolation and encryption, in addition, the operation of an electric power system and a manager causes a plurality of factors influencing the operation of the FA of a distribution network, the current supervision and analysis on the FA of the distribution network are concentrated on the function evaluation of the FA and the FA result analysis on a certain operation section, and the whole process and the consistency analysis and the problem positioning are lacked.
Before the power distribution automation system is put into operation formally, checking whether the power distribution automation system has alarm information and whether the fault processing function is complete by the FA function; in the practical test receiving stage after the automatic system is put into operation, indexes such as power distribution terminal coverage, terminal on-line rate, automatic line coverage, remote control success rate and the like are mainly examined. The above-mentioned indexes are not checked for correctness, validity, signal transmission process and execution process of the control command, even if the signal is successfully transmitted to the specified device. Therefore, effective supervision is lacked in the aspects of whether the FA is correctly started, whether the fault property is correctly determined, whether the fault location is accurate, whether the isolation transfer strategy is correctly executed and the like in the actual operation of the distribution network at the current stage, and for the problems of FA starting failure, location failure and the like, only one example can be analyzed generally, and a systematic and procedural analysis method is lacked.
Disclosure of Invention
The purpose of the invention is as follows: in view of the above problems, the present invention aims to provide a distribution network feeder automation operation process supervision and analysis method, which solves the problems that instruction generation, information transmission and instruction execution correctness are not checked in the current distribution network FA operation process, and solves the problems that the current distribution network FA lacks refinement and continuity analysis for the abnormal conditions of startup failure and positioning failure.
The technical scheme is as follows: the invention relates to a distribution network feeder automation operation process supervision and analysis method, which comprises the following steps:
(1) the distribution network processing data is read;
(2) for the centralized FA line, judging a starting signal according to the time of a power distribution main station receiving an FA starting signal issued by a scheduling main station, if the starting signal is in a line protection signal collection period, the starting signal is invalid and does not fall into the statistical range of line fault times, otherwise, entering the step (3); for the non-centralized FA line, entering the step (6);
(3) judging whether the FA is started according to the record of the power distribution main station, if not, performing reason analysis, and if so, entering the step (4);
(4) performing FA misjudgment check according to FA processing data of the power distribution main station, if FA is started by mistake or the fault type is misjudged by mistake, performing reason analysis, and if not, entering the step (5);
(5) checking the FA locking execution condition according to the FA processing data of the power distribution main station, if FA locking is automatically executed, analyzing reasons, and if not, entering the step (6); if the power distribution main station FA does not have the locking automatic execution function, entering the step (6);
(6) judging the fault according to the line inspection result, and if the fault is judged to be an instantaneous fault by the FA and no fault point is found in the inspection line, judging the FA to be accurate; if the fault point found by line patrol is located in the fault area given by the FA, the step (7) is carried out; if the FA is analyzed wrongly, reason analysis is carried out;
(7) according to the fault point in the step (6), checking whether the protection of the nearest power distribution terminal at the upstream of the fault point acts and sends a protection signal to the power distribution main station, and the protection signal of the nearest power distribution terminal at the downstream does not act and does not send the protection signal, if not, performing FA positioning expansion reason analysis, otherwise, entering the step (8);
(8) judging according to the fault isolation and load transfer strategy execution conditions given by the FA, and if the execution is not finished, analyzing the reason; and if the execution is finished, judging the FA to be accurate.
And the signals in the step (2) comprise signals transmitted to the dispatching master station from the transformer substation, signals transmitted to the power distribution master station from the dispatching master station and signals transmitted to the power distribution master station from the power distribution terminal.
The line protection signal collection period in the step (2) is as follows: the time interval between the time when the nth FA of the line i in the distribution network starts and the time when the FA starts to judge, namely
In the formula:
the moment of starting the nth FA of the line i in the distribution network; the delta t is set by a distribution network operator and is usually set between 15 seconds and 30 seconds;
and the dispatching master station combines the signals into an FA starting signal and transmits the FA starting signal to the distribution master station after receiving the signals which are transmitted by the transformer substation and used for switching off, protecting and accident.
The FA non-initiation reason analysis method in the step (3) is as follows, and the analysis sequence is not in sequence:
whether the current and the validity check do not pass is judged, if so, the problem of no responsibility is judged, the current and the validity check do not pass indicates that spare channel supplement, full data judgment and suspicious mark recording exist in the alarm content, and the current value of a system switch is inconsistent with the on-off state of the switch;
and if the system is hung, checking as follows: if the card is wrongly hung or not picked in time in the dispatching process, judging that the card is a dispatching master station problem; if the distribution network is not synchronized in time after the cards are dispatched and picked, judging that the distribution master station is in a problem; except the two situations, the system is regarded as normal operation and is not counted;
whether the FA line is not on-line or not is checked, if so, the following check is carried out: if the regulation personnel manually go off-line, the statistics is not carried out; if the fault is not filed in time after being processed, the problem of the power distribution main station is judged; judging as a power distribution main station problem except the two situations;
whether the voltage of the bus of the transformer substation is abnormal or not is checked as follows if the voltage of the bus of the transformer substation is abnormal: if the system is tested or overhauled but the card is not hung, judging that the master station is a scheduling master station problem or not counting according to the requirement of an operator; determining as a substation problem except for the above;
whether the topology is abnormal on the upstream and the downstream of the outgoing switch or not is checked if the topology is abnormal on the upstream and the downstream of the outgoing switch, and if the topology is abnormal on the downstream of the outgoing switch, the following check is performed: if the upstream topology is abnormal, judging that the master station is scheduled; if the downstream topology is abnormal, judging that the problem of the power distribution main station exists;
whether the closed loop operation is displayed for the system or not is checked, if so, the following check is carried out: if the interconnection switch is an automatic switch and the actual position is a position, judging that the terminal problem exists; if the interconnection switch is a non-automatic switch and the actual position is a position, judging that the problem of the power distribution main station exists; if the actual position of the interconnection switch is a closed position, determining that the problem is not responsible;
if the FA starting signal is not generated or forwarded in time by the main network, if so, the problem of scheduling the main station is judged;
whether the FA starting signal is lost or stuck in the forwarding process is judged, and if the FA starting signal is lost or stuck, the main and distribution network information interaction problem is judged;
if the system configuration is wrong or inconsistent, judging that one or two or all of the three parts among the plant station, the scheduling master station and the power distribution master station are in a problem according to the system where the wrong parameters or inconsistent parameters are located;
whether the FA starting state is not collected by a statistical system due to the fact that data synchronization of a first area and a fourth area of the power distribution main station is not in time, and if yes, the problem of the power distribution main station is judged;
whether the remote signaling of the outgoing line switch is blocked or not is judged, and if the remote signaling of the outgoing line switch is blocked, the problem of a scheduling master station or the problem of a power distribution master station is judged according to a system to which a blocked operator belongs;
whether the counted line is a non-FA line or not is judged, if yes, the counting is not carried out;
if the situation is complex, the reason for non-starting cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason for FA non-starting are manually recorded.
The FA misjudgment checking method in the step (4) comprises the following steps:
checking whether FA is started by mistake, checking whether the outgoing line switch is switched off at the time of starting the FA, and if the outgoing line switch is switched off, judging that the FA is not started by mistake; if the switching-on is performed, the starting is mistakenly performed;
checking whether the FA misjudges the fault property, judging according to a remote signaling change signal of the outgoing line switch in a line protection signal collection period, and if the final state of the outgoing line switch is open and the FA judges that the FA is an instantaneous fault, misjudging the fault property by the FA; if the last state of the outgoing line switch is closing and FA judges as a permanent fault, the fault property is judged by mistake by FA; the FA determined correct except for the two cases described above.
The FA misjudgment reason analysis method in the step (4) is as follows, and the analysis sequence is not in sequence:
whether the system is overhauled or not is tested, if so, the problem of the master scheduling station is judged or not counted according to the requirement of an operator;
whether FA false starting is caused by the fact that the FA starting signal is sent by the dispatching master station in a false mode or not is judged, if yes, the source of the FA starting signal is checked, and if the FA starting signal comes from a transformer substation, the problem of the transformer substation is judged; if the current time comes from the scheduling master station, judging the current time as a scheduling master station problem;
whether the phenomenon of disorder or omission occurs to the switch remote signaling signal sequence or not is checked, if so, the following check is carried out: if the out-of-order or omission phenomenon occurs when the dispatching master station forwards the transformer substation signals, judging that the dispatching master station has a problem; if the forwarding sequence of the scheduling master station is correct, but the power distribution master station finds out that the signals are out of order or are omitted when receiving the signals, the problem of information interaction of the main distribution network is judged; if the receiving sequence of the power distribution master station is correct, but the phenomenon of disorder or omission occurs in the analysis process, judging that the problem of the power distribution master station exists;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason that FA cannot be started are manually recorded.
The FA lockout automatic execution reason analysis method in the step (5) is as follows, and the analysis sequence is not in sequence:
whether FA locking is automatically executed due to failure of checking and studying links in an FA program, if so, the FA locking is judged to have no responsibility, the checking and studying links do not refer to the record of a spare channel supplement, full data judgment and a suspicious mark in alarm content, the current value of a system switch is inconsistent with the on-off state of the switch, two faults occur continuously within a short time of the same line, and the line has the condition of transferring a supply task before the fault; the short-time optimal value interval in two faults continuously occurring in the same short time of the same line is 1-10 minutes;
whether the time of the fault signal is abnormal or not is judged, if yes, the scheduling master station or the power distribution master station or the communication problem is judged; the time abnormity of the fault signal means that the difference between the FA processing time and the actual fault occurrence time exceeds 1 minute and more;
whether the fault is an instantaneous fault or not, namely FA locking caused by successful reclosing is automatically executed, if so, the following check is carried out: if the operator sends a work order to require personnel to go to the site for line patrol, the operation goes to the step (6) and enters a link of reading a line patrol result; if the operator does not dispatch a work order and the personnel does not go to the site for line patrol, the FA is judged to be accurate;
if the situation is complex, the problem can not be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of automatic execution of FA locking are manually recorded.
The FA misanalysis reason analysis method in the step (6) is as follows, and the analysis sequence is not in sequence:
whether the fault point is not found in the line patrol or not is judged, but the outgoing line switch is in the position division before the switching strategy is executed, if so, the source of the problem is positioned according to the actual situation of the site;
whether a permanent fault point is found for line patrol or not, but the outgoing switch is in a closed position before the strategy is transferred, if so, a problem source is positioned according to the actual situation of the site;
whether the fault point for line patrol power generation is not in the fault area given by the FA, if so, the following checks are carried out: if the power distribution terminal sends the protection signal in error or in missing, the problem of the terminal is judged; if the distribution network topology or the point table configuration is wrong, the problem of the distribution terminal is judged; if the protection signal of the power distribution terminal is not restored in time and the communication is normal, judging that the terminal is in a problem; if the communication is abnormal, judging that the communication is a problem;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of FA misanalysis are manually recorded.
The FA positioning enlargement reason analysis method in the step (7) is as follows, and the analysis sequence is not in sequence:
whether the FA positioning range is enlarged due to the fact that the FA positioning range is offline or the problem of the power distribution terminal configuration is caused is judged, and if the FA positioning range is enlarged, the FA positioning range is judged to be the problem of the power distribution terminal;
whether the FA positioning range is enlarged due to the fact that the power distribution main station is not configured with related protection signals or not is judged to be a power distribution main station problem if the FA positioning range is enlarged;
whether the FA positioning range is enlarged due to incorrect distribution network switch position is detected as follows: if the position is incorrect, namely the actual position is inconsistent with the system recording position, the switch is an automatic switch and the communication is normal, the problem of the power distribution terminal is judged; if the switch with the incorrect position is an automatic switch and the communication is abnormal, judging that the communication is a problem; if the switch with the incorrect position is a non-automatic switch, judging that the power distribution main station has a problem;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of FA positioning expansion are manually recorded.
The method for analyzing the reason for the failure of the scheme execution in the step (8) is as follows, and the analysis sequence is not in sequence:
if the operation party does not dispatch the work order or the operation personnel does not execute the work order, the FA isolation and transfer strategy is not executed, and if the FA isolation and transfer strategy is not executed, the operation inspection problem is judged;
whether the FA isolation and supply transfer strategy is not executed due to the failure of the automatic switch or not is judged, and if yes, the problem of the distribution network terminal is judged;
whether the opposite end of the line is overhauled or tested, if so, determining that the problem is not responsible;
if the situation is complex, the problem cannot be determined only by the checking, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of failure in executing the scheme are manually entered.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
1. the method comprises the steps of effectively checking whether instruction generation, information transmission and instruction execution are correct in the operation process of the distribution network FA;
2. and by combining the on-site line patrol result, the abnormal conditions such as distribution network FA starting failure, positioning failure and the like are analyzed in a refined and continuous manner, the problem source is given, and a basis is provided for perfecting the functions and the management system of the distribution automation system.
Drawings
FIG. 1 is a general flow diagram of the present invention;
FIG. 2 shows a connection relationship among a substation, a scheduling master station, a distribution master station and a distribution terminal in an electric power system;
FIG. 3 is a flow chart of FA inactivity reason analysis;
FIG. 4 is a flowchart illustrating FA misjudgment reason analysis;
FIG. 5 is a flow chart of FA lockout auto-execution cause analysis;
FIG. 6 is a flowchart of FA misanalysis cause analysis;
FIG. 7 is a flowchart of FA location augmentation cause analysis;
fig. 8 is a flowchart of the scenario execution failure reason analysis.
Detailed Description
In the method for supervising and analyzing distribution network feeder automation operation process described in this embodiment, a flowchart is shown in fig. 1, and the method includes the following steps:
(1) and (4) processing data reading of the distribution network.
(2) Feeder automation line analysis: the read signals comprise signals transmitted to the dispatching master station from the transformer substation, signals transmitted to the power distribution master station from the dispatching master station and signals transmitted to the power distribution master station from the power distribution terminal; for the centralized FA line, judging a starting signal according to the time of a power distribution main station receiving an FA starting signal issued by a scheduling main station, if the starting signal is in a line protection signal collection period, the starting signal is invalid and does not fall into the statistical range of line fault times, otherwise, entering the step (3); and (5) entering the step (6) for the non-centralized FA line.
Wherein the line protection signal collection period is: the time interval between the time when the nth FA of the line i in the distribution network starts and the time when the FA starts to judge, namely
In the formula:
the moment of starting the nth FA of the line i in the distribution network; Δ t is set by the network operator and is typically set between 15 seconds and 30 seconds.
The transformer substation, the dispatch main website, the distribution main website, the information interaction between the distribution terminal is as shown in fig. 2, after the trouble takes place, the transformer substation will be in station signal transmission to the dispatch main website, the dispatch main website is according to the synthetic accident separating brake signal of configuration, the distribution main website is forwardded to together with the relevant signal that delivers to on the transformer substation, and simultaneously, the distribution main website is also uploaded to the signal of self, the distribution main website is based on the protection signal collection period of different circuits, give FA to the signal of collecting and study and judge. Mutual information between transformer substation, dispatch main website, distribution main website, the distribution terminal includes: the system comprises a short-circuit period displacement signal, a disconnecting link displacement signal, a breaker accident opening signal, a breaker protection action signal, breaker measured section data, disconnecting link measured section data, main network bus measured section data, main network recheck measured section data, main network cards picking, card hanging operation data, remote signaling data, blocking operation data, breaker remote control operation data, a terminal protection signal and a distribution network automatic switch displacement signal.
And the dispatching master station combines the signals into an FA starting signal and transmits the FA starting signal to the distribution master station after receiving the signals which are transmitted by the transformer substation and used for switching off, protecting and accident.
(3) Feeder automation starts analysis: judging whether the FA is started according to the record of the power distribution main station, if not, performing reason analysis, and if so, entering the step (4);
the FA non-initiation reason analysis method is as follows, and the implementation flow chart is as shown in figure 3, and the analysis sequence is not in sequence:
if FA automatic locking is started:
whether the current and the validity check do not pass is judged, if so, the problem of no responsibility is judged, the current and the validity check do not pass indicates that spare channel supplement, full data judgment and suspicious mark recording exist in the alarm content, and the current value of a system switch is inconsistent with the on-off state of the switch;
and if the system is hung, checking as follows: if the card is wrongly hung or not picked in time in the dispatching process, judging that the card is a dispatching master station problem; if the distribution network is not synchronized in time after the cards are dispatched and picked, judging that the distribution master station is in a problem; except the two situations, the system is regarded as normal operation and is not counted;
whether the FA line is not on-line or not is checked, if so, the following check is carried out: if the regulation personnel manually go off-line, the statistics is not carried out; if the fault is not filed in time after being processed, the problem of the power distribution main station is judged; judging as a power distribution main station problem except the two situations;
whether the voltage of the bus of the transformer substation is abnormal or not is checked as follows if the voltage of the bus of the transformer substation is abnormal: if the system is tested or overhauled but the card is not hung, judging that the master station is a scheduling master station problem or not counting according to the requirement of an operator; determining as a substation problem except for the above;
whether the topology is abnormal on the upstream and the downstream of the outgoing switch or not is checked if the topology is abnormal on the upstream and the downstream of the outgoing switch, and if the topology is abnormal on the downstream of the outgoing switch, the following check is performed: if the upstream topology is abnormal, judging that the master station is scheduled; if the downstream topology is abnormal, judging that the problem of the power distribution main station exists;
whether the closed loop operation is displayed for the system or not is checked, if so, the following check is carried out: if the interconnection switch is an automatic switch and the actual position is a position, judging that the terminal problem exists; if the interconnection switch is a non-automatic switch and the actual position is a position, judging that the problem of the power distribution main station exists; if the actual position of the interconnection switch is a closed position, determining that the problem is not responsible;
if FA is unlocked:
if the FA starting signal is not generated or forwarded in time by the main network, if so, the problem of scheduling the main station is judged;
whether the FA starting signal is lost or stuck in the forwarding process is judged, and if the FA starting signal is lost or stuck, the main and distribution network information interaction problem is judged;
if the system configuration is wrong or inconsistent, judging that one or two or all of the three parts among the plant station, the scheduling master station and the power distribution master station are in a problem according to the system where the wrong parameters or inconsistent parameters are located;
whether the FA starting state is not collected by a statistical system due to the fact that data synchronization of a first area and a fourth area of the power distribution main station is not in time, and if yes, the problem of the power distribution main station is judged;
whether the remote signaling of the outgoing line switch is blocked or not is judged, and if the remote signaling of the outgoing line switch is blocked, the problem of a scheduling master station or the problem of a power distribution master station is judged according to a system to which a blocked operator belongs;
whether the counted line is a non-FA line or not is judged, if yes, the counting is not carried out;
if the situation is complex, the reason for non-starting cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason for FA non-starting are manually recorded.
(4) Judging and analyzing the fault property: performing FA misjudgment check according to FA processing data of the power distribution main station, if FA is started by mistake or the fault type is misjudged by mistake, performing reason analysis, and if not, entering the step (5);
the FA misjudgment checking method comprises the following steps:
checking whether FA is started by mistake, checking whether the outgoing line switch is switched off at the time of starting the FA, and if the outgoing line switch is switched off, judging that the FA is not started by mistake; if the switching-on is performed, the starting is mistakenly performed;
checking whether the FA misjudges the fault property, judging according to a remote signaling change signal of the outgoing line switch in a line protection signal collection period, and if the final state of the outgoing line switch is open and the FA judges that the FA is an instantaneous fault, misjudging the fault property by the FA; if the last state of the outgoing line switch is closing and FA judges as a permanent fault, the fault property is judged by mistake by FA; the FA determined correct except for the two cases described above.
The analysis method for the FA misjudgment reason is as follows, the flow chart is shown in figure 4, and the analysis sequence is not in sequence:
whether the system is overhauled or not is tested, if so, the problem of the master scheduling station is judged or not counted according to the requirement of an operator;
whether FA false starting is caused by the fact that the FA starting signal is sent by the dispatching master station in a false mode or not is judged, if yes, the source of the FA starting signal is checked, and if the FA starting signal comes from a transformer substation, the problem of the transformer substation is judged; if the current time comes from the scheduling master station, judging the current time as a scheduling master station problem;
whether the phenomenon of disorder or omission occurs to the switch remote signaling signal sequence or not is checked, if so, the following check is carried out: if the out-of-order or omission phenomenon occurs when the dispatching master station forwards the transformer substation signals, judging that the dispatching master station has a problem; if the forwarding sequence of the scheduling master station is correct, but the power distribution master station finds out that the signals are out of order or are omitted when receiving the signals, the problem of information interaction of the main distribution network is judged; if the receiving sequence of the power distribution master station is correct, but the phenomenon of disorder or omission occurs in the analysis process, judging that the problem of the power distribution master station exists;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason that FA cannot be started are manually recorded.
(5) Automatically performing situation analysis: checking the FA locking execution condition according to the FA processing data of the power distribution main station, if FA locking is automatically executed, analyzing reasons, and if not, entering the step (6); if the power distribution main station FA does not have the locking automatic execution function, entering the step (6);
the FA lockout automatic execution reason analysis method is as follows, a flow chart is shown in figure 5, and the analysis sequence is not in sequence:
whether a checking and studying link in an FA program does not pass or not, if so, the problem is judged to be not responsible, the checking and studying link does not pass through the recording of a spare channel supplement, a full data judgment and a suspicious mark in alarm content, the current value of a system switch is inconsistent with the on-off state of the switch, two faults occur continuously within a short time of the same line, and the line has the condition of transferring a supply task before the fault; the short-time optimal value interval in two faults continuously occurring in the same short time of the same line is 1-10 minutes;
whether the time of the fault signal is abnormal or not is judged, if yes, the scheduling master station or the power distribution master station or the communication problem is judged; the time abnormity of the fault signal means that the difference between the FA processing time and the actual fault occurrence time exceeds 1 minute and more;
whether the fault is an instantaneous fault or not, namely reclosing is successful, if so, the following check is carried out: if the operator sends a work order to require personnel to go to the site for line patrol, the operation goes to the step (6) and enters a link of reading a line patrol result; if the operator does not dispatch a work order and the personnel does not go to the site for line patrol, the FA is judged to be accurate;
if the situation is complex, the problem can not be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of automatic execution of FA locking are manually recorded.
(6) And (3) analyzing the effectiveness of fault positioning: judging the fault according to the line inspection result, and if the fault is judged to be an instantaneous fault by the FA and no fault point is found in the inspection line, judging the FA to be accurate; if the fault point found by line patrol is located in the fault area given by the FA, the step (7) is carried out; if the FA is analyzed wrongly, reason analysis is carried out;
the FA misanalysis reason analysis method is as follows, the flow chart is shown in FIG. 6, and the analysis sequence is not in sequence:
whether the fault point is not found in the line patrol or not is judged, but the outgoing line switch is in the position division before the switching strategy is executed, if so, the source of the problem is positioned according to the actual situation of the site;
whether a permanent fault point is found for line patrol or not, but the outgoing switch is in a closed position before the strategy is transferred, if so, a problem source is positioned according to the actual situation of the site;
whether the fault point for line patrol power generation is not in the fault area given by the FA, if so, the following checks are carried out: if the power distribution terminal sends the protection signal in error or in missing, the problem of the terminal is judged; if the distribution network topology or the point table configuration is wrong, the problem of the distribution terminal is judged; if the protection signal of the power distribution terminal is not restored in time and the communication is normal, judging that the terminal is in a problem; if the communication is abnormal, judging that the communication is a problem;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of FA misanalysis are manually recorded.
(7) Analyzing the accuracy of the fault area: according to the fault point in the step (6), checking whether the protection of the nearest power distribution terminal at the upstream of the fault point acts and sends a protection signal to the power distribution main station, and the protection signal of the nearest power distribution terminal at the downstream does not act and does not send the protection signal, if not, performing FA positioning expansion reason analysis, otherwise, entering the step (8);
the FA positioning enlargement reason analysis method is as follows, the flow chart is shown in FIG. 7, and the analysis sequence is not in sequence:
whether the power distribution terminal is offline or not or the power distribution terminal is configured with a problem is judged, and if the problem is judged to be the power distribution terminal problem;
whether the power distribution master station is not configured with related protection signals or not is judged, and if yes, the problem of the power distribution master station is judged;
whether the position of the distribution network switch is incorrect or not is checked as follows if the position of the distribution network switch is incorrect: if the position is incorrect, namely the actual position is inconsistent with the system recording position, the switch is an automatic switch and the communication is normal, the problem of the power distribution terminal is judged; if the switch with the incorrect position is an automatic switch and the communication is abnormal, judging that the communication is a problem; if the switch with the incorrect position is a non-automatic switch, judging that the power distribution main station has a problem;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of FA positioning expansion are manually recorded.
(8) And (3) carrying out isolation transfer for strategy execution condition analysis: judging according to the fault isolation and load transfer strategy execution conditions given by the FA, and if the execution is not finished, analyzing the reason; and if the execution is finished, judging the FA to be accurate.
The method for analyzing the cause of the failure of the scheme execution is as follows, the flow chart is shown in fig. 8, and the analysis sequence is not in sequence:
if the operation party does not dispatch the work order or the operation personnel does not execute the work order, the FA isolation and transfer strategy is not executed, and if the FA isolation and transfer strategy is not executed, the operation inspection problem is judged;
whether the FA isolation and supply transfer strategy is not executed due to the failure of the automatic switch or not is judged, and if yes, the problem of the distribution network terminal is judged;
whether the opposite end of the line is overhauled or tested, if so, determining that the problem is not responsible;
if the situation is complex, the problem cannot be determined only by the checking, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of failure in executing the scheme are manually entered.
Claims (10)
1. A distribution network feeder automation operation process supervision and analysis method is characterized by comprising the following steps:
(1) the distribution network processing data is read;
(2) for the centralized FA line, judging a starting signal according to the time of a power distribution main station receiving an FA starting signal issued by a scheduling main station, if the starting signal is in a line protection signal collection period, the starting signal is invalid and does not fall into the statistical range of line fault times, otherwise, entering the step (3); for the non-centralized FA line, entering the step (6);
(3) judging whether the FA is started according to the record of the power distribution main station, if not, performing reason analysis, and if so, entering the step (4);
(4) performing FA misjudgment check according to FA processing data of the power distribution main station, if FA is started by mistake or the fault type is misjudged by mistake, performing reason analysis, and if not, entering the step (5);
(5) checking the FA locking execution condition according to the FA processing data of the power distribution main station, if FA locking is automatically executed, analyzing reasons, and if not, entering the step (6); if the power distribution main station FA does not have the locking automatic execution function, entering the step (6);
(6) judging the fault according to the line inspection result, and if the fault is judged to be an instantaneous fault by the FA and no fault point is found in the inspection line, judging the FA to be accurate; if the fault point found by line patrol is located in the fault area given by the FA, the step (7) is carried out; if the FA is analyzed wrongly, reason analysis is carried out;
(7) according to the fault point in the step (6), checking whether the protection of the nearest power distribution terminal at the upstream of the fault point acts and sends a protection signal to the power distribution main station, and the protection signal of the nearest power distribution terminal at the downstream does not act and does not send the protection signal, if not, performing FA positioning expansion reason analysis, otherwise, entering the step (8);
(8) judging according to the fault isolation and load transfer strategy execution conditions given by the FA, and if the execution is not finished, analyzing the reason; and if the execution is finished, judging the FA to be accurate.
2. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that the signals in step (2) include signals sent from a substation to a dispatching master station, signals sent from the dispatching master station to a distribution master station, and signals sent from a distribution terminal to the distribution master station.
3. The method for supervising and analyzing the distribution network feeder automation operation process according to claim 1, wherein the line protection signal collection period in the step (2) is as follows: the time interval between the time when the nth FA of the line i in the distribution network starts and the time when the FA starts to judge, namely
In the formula:
the moment of starting the nth FA of the line i in the distribution network; the delta t is set by a distribution network operator and is usually set between 15 seconds and 30 seconds;
and the dispatching master station combines the signals into an FA starting signal and transmits the FA starting signal to the distribution master station after receiving the signals which are transmitted by the transformer substation and used for switching off, protecting and accident.
4. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that in the step (3), the analysis method for the reasons for FA inactivity is as follows, and the analysis sequence is not in sequence:
whether the current and the validity check do not pass is judged, if so, the problem of no responsibility is judged, the current and the validity check do not pass indicates that spare channel supplement, full data judgment and suspicious mark recording exist in the alarm content, and the current value of a system switch is inconsistent with the on-off state of the switch;
and if the system is hung, checking as follows: if the card is wrongly hung or not picked in time in the dispatching process, judging that the card is a dispatching master station problem; if the distribution network is not synchronized in time after the cards are dispatched and picked, judging that the distribution master station is in a problem; except the two situations, the system is regarded as normal operation and is not counted;
whether the FA line is not on-line or not is checked, if so, the following check is carried out: if the regulation personnel manually go off-line, the statistics is not carried out; if the fault is not filed in time after being processed, the problem of the power distribution main station is judged; judging as a power distribution main station problem except the two situations;
whether the voltage of the bus of the transformer substation is abnormal or not is checked as follows if the voltage of the bus of the transformer substation is abnormal: if the system is tested or overhauled but the card is not hung, judging that the master station is a scheduling master station problem or not counting according to the requirement of an operator; determining as a substation problem except for the above;
whether the topology is abnormal on the upstream and the downstream of the outgoing switch or not is checked if the topology is abnormal on the upstream and the downstream of the outgoing switch, and if the topology is abnormal on the downstream of the outgoing switch, the following check is performed: if the upstream topology is abnormal, judging that the master station is scheduled; if the downstream topology is abnormal, judging that the problem of the power distribution main station exists;
whether the closed loop operation is displayed for the system or not is checked, if so, the following check is carried out: if the interconnection switch is an automatic switch and the actual position is a position, judging that the terminal problem exists; if the interconnection switch is a non-automatic switch and the actual position is a position, judging that the problem of the power distribution main station exists; if the actual position of the interconnection switch is a closed position, determining that the problem is not responsible;
if the FA starting signal is not generated or forwarded in time by the main network, if so, the problem of scheduling the main station is judged;
whether the FA starting signal is lost or stuck in the forwarding process is judged, and if the FA starting signal is lost or stuck, the main and distribution network information interaction problem is judged;
if the system configuration is wrong or inconsistent, judging that one or two or all of the three parts among the plant station, the scheduling master station and the power distribution master station are in a problem according to the system where the wrong parameters or inconsistent parameters are located;
whether the FA starting state is not collected by a statistical system due to the fact that data synchronization of a first area and a fourth area of the power distribution main station is not in time, and if yes, the problem of the power distribution main station is judged;
whether the remote signaling of the outgoing line switch is blocked or not is judged, and if the remote signaling of the outgoing line switch is blocked, the problem of a scheduling master station or the problem of a power distribution master station is judged according to a system to which a blocked operator belongs;
whether the counted line is a non-FA line or not is judged, if yes, the counting is not carried out;
if the situation is complex, the reason for non-starting cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason for FA non-starting are manually recorded.
5. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that the FA misjudgment checking method in the step (4) is:
checking whether FA is started by mistake, checking whether the outgoing line switch is switched off at the time of starting the FA, and if the outgoing line switch is switched off, judging that the FA is not started by mistake; if the switching-on is performed, the starting is mistakenly performed;
checking whether the FA misjudges the fault property, judging according to a remote signaling change signal of the outgoing line switch in a line protection signal collection period, and if the final state of the outgoing line switch is open and the FA judges that the FA is an instantaneous fault, misjudging the fault property by the FA; if the last state of the outgoing line switch is closing and FA judges as a permanent fault, the fault property is judged by mistake by FA; the FA determined correct except for the two cases described above.
6. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that the FA misjudgment reason analysis method in step (4) is as follows, and the analysis sequence is not in sequence:
whether the system is overhauled or not is tested, if so, the problem of the master scheduling station is judged or not counted according to the requirement of an operator;
whether FA false starting is caused by the fact that the FA starting signal is sent by the dispatching master station in a false mode or not is judged, if yes, the source of the FA starting signal is checked, and if the FA starting signal comes from a transformer substation, the problem of the transformer substation is judged; if the current time comes from the scheduling master station, judging the current time as a scheduling master station problem;
whether the phenomenon of disorder or omission occurs to the switch remote signaling signal sequence or not is checked, if so, the following check is carried out: if the out-of-order or omission phenomenon occurs when the dispatching master station forwards the transformer substation signals, judging that the dispatching master station has a problem; if the forwarding sequence of the scheduling master station is correct, but the power distribution master station finds out that the signals are out of order or are omitted when receiving the signals, the problem of information interaction of the main distribution network is judged; if the receiving sequence of the power distribution master station is correct, but the phenomenon of disorder or omission occurs in the analysis process, judging that the problem of the power distribution master station exists;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason that FA cannot be started are manually recorded.
7. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that the FA lockout automatic execution cause analysis method in step (5) is as follows, and the analysis sequence is not in sequence:
whether FA locking is automatically executed due to failure of checking and studying links in an FA program, if so, the FA locking is judged to have no responsibility, the checking and studying links do not refer to the record of a spare channel supplement, full data judgment and a suspicious mark in alarm content, the current value of a system switch is inconsistent with the on-off state of the switch, two faults occur continuously within a short time of the same line, and the line has the condition of transferring a supply task before the fault; the short time interval in two continuous faults in the same short time of the same line is 1-10 minutes;
whether the time of the fault signal is abnormal or not is judged, if yes, the scheduling master station or the power distribution master station or the communication problem is judged; the time abnormity of the fault signal means that the difference between the FA processing time and the actual fault occurrence time exceeds 1 minute and more;
if the fault is a transient fault, checking the following steps: if the operator sends a work order to require personnel to go to the site for line patrol, the step (6) is carried out, and a link of reading a line patrol result is carried out; if the operator does not dispatch a work order and the personnel does not go to the site for line patrol, the FA is judged to be accurate;
if the situation is complex, the problem can not be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of automatic execution of FA locking are manually recorded.
8. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that the analysis method for the cause of FA misanalysis in step (6) is as follows, and the analysis sequence is not in sequence:
whether the fault point is not found in the line patrol or not is judged, but the outgoing line switch is in the position division before the switching strategy is executed, if so, the source of the problem is positioned according to the actual situation of the site;
whether a permanent fault point is found for line patrol or not, but the outgoing switch is in a closed position before the strategy is transferred, if so, a problem source is positioned according to the actual situation of the site;
whether the fault point for line patrol power generation is not in the fault area given by the FA, if so, the following checks are carried out: if the power distribution terminal sends the protection signal in error or in missing, the problem of the terminal is judged; if the distribution network topology or the point table configuration is wrong, the problem of the distribution terminal is judged; if the protection signal of the power distribution terminal is not restored in time and the communication is normal, judging that the terminal is in a problem; if the communication is abnormal, judging that the communication is a problem;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of FA misanalysis are manually recorded.
9. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that, in the step (7), the FA localization enlargement cause analysis method is as follows, and the analysis sequence is not in sequence:
whether the FA positioning range is enlarged due to the fact that the FA positioning range is offline or the problem of the power distribution terminal configuration is caused is judged, and if the FA positioning range is enlarged, the FA positioning range is judged to be the problem of the power distribution terminal;
whether the FA positioning range is enlarged due to the fact that the power distribution main station is not configured with related protection signals or not is judged to be a power distribution main station problem if the FA positioning range is enlarged;
whether the FA positioning range is enlarged due to incorrect distribution network switch position is detected as follows: if the position is incorrect, namely the actual position is inconsistent with the system recording position, the switch is an automatic switch and the communication is normal, the problem of the power distribution terminal is judged; if the switch with the incorrect position is an automatic switch and the communication is abnormal, judging that the communication is a problem; if the switch with the incorrect position is a non-automatic switch, judging that the power distribution main station has a problem;
if the situation is complex, the problem cannot be determined only by the check, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of FA positioning expansion are manually recorded.
10. The distribution network feeder automation operation process supervision and analysis method according to claim 1, characterized in that the method for analyzing the cause of failure of the scheme execution in the step (8) is as follows, and the analysis sequence is not in sequence:
if the operation party does not dispatch the work order or the operation personnel does not execute the work order, the FA isolation and transfer strategy is not executed, and if the FA isolation and transfer strategy is not executed, the operation inspection problem is judged;
whether the FA isolation and supply transfer strategy is not executed due to the failure of the automatic switch or not is judged, and if yes, the problem of the distribution network terminal is judged;
whether the opposite end of the line is overhauled or tested, if so, determining that the problem is not responsible;
if the situation is complex, the problem cannot be determined only by the checking, related problem positioning is eliminated according to the actual situation, and then the phenomenon and reason of failure in executing the scheme are manually entered.
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