CN111585278B - Power distribution network fault processing method based on voltage and current parameter detection - Google Patents
Power distribution network fault processing method based on voltage and current parameter detection Download PDFInfo
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- CN111585278B CN111585278B CN202010440452.7A CN202010440452A CN111585278B CN 111585278 B CN111585278 B CN 111585278B CN 202010440452 A CN202010440452 A CN 202010440452A CN 111585278 B CN111585278 B CN 111585278B
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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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
- H02J13/00001—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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- 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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- 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
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- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a power distribution network fault processing method based on voltage and current parameter detection, which comprises the following steps of firstly, acquiring a network distribution map of a power distribution network, wherein the network distribution map is an erection relation between each cable and a circuit node; then, fault rapid positioning is carried out by means of a fault processing system, and a maintenance position is obtained; and then the intelligent delegation suitable personnel at the positioned maintenance position are maintained by means of the fault processing system. According to the method, a network distribution diagram of the power distribution network is obtained, wherein the network distribution diagram is an erection relation between each cable and a circuit node; then, all nodes in the power distribution network are divided and associated by means of a node dividing unit in the fault processing system to obtain a plurality of nuclear selection rings, the nodes in the nuclear selection rings are monitored in real time, and the nuclear selection rings are marked as corresponding parts needing to be thoroughly checked under the condition that certain conditions are met; and carrying out fault rapid positioning according to the mode to obtain a maintenance position.
Description
Technical Field
The invention belongs to the field of power grid faults, and particularly relates to a power distribution network fault processing method based on voltage and current parameter detection.
Background
The patent with publication number CN103607042A discloses a power distribution network fault processing method for a suburban power distribution network long overhead line fault indicator, which is characterized in that the turnover information of the fault indicator hooked on the suburban power distribution network overhead line is sent to a power distribution network automatic main station system, and the fault is analyzed and processed through fault location, fault isolation and fault recovery according to the grid structure of the power distribution network and the real-time information of equipment operation in combination with fault signals. The power distribution fault processing method for the suburban power distribution network long overhead line fault indicator improves the fault processing efficiency of the power distribution line and shortens the power failure time, so that the method becomes an effective means for improving the power supply reliability of suburban and rural power distribution networks.
However, in the fault detection process of the power distribution network, the detection process is complex, an effective fault location technology and a node association mode in the power distribution network are lacked, the power distribution network can be divided into parts to be monitored, the most appropriate maintenance personnel are intelligently distributed for the fault, the fault of the power distribution network is guaranteed to be rapidly processed, and a solution is provided for solving the technical problem.
Disclosure of Invention
The invention aims to provide a power distribution network fault processing method based on voltage and current parameter detection.
The purpose of the invention can be realized by the following technical scheme:
a power distribution network fault processing method based on voltage and current parameter detection is characterized by comprising the following steps:
the method comprises the following steps: acquiring a network distribution map of the power distribution network, wherein the network distribution map is an erection relation between each cable and a circuit node;
step two: rapidly positioning the fault by means of a fault processing system to obtain a maintenance position;
step three: the fault processing system is used for intelligently appointing proper personnel to the located maintenance position for maintenance;
step four: and completing fault processing.
Furthermore, the fault processing system comprises a power distribution base, a node dividing unit, a node current monitoring unit, a node voltage monitoring unit, a node position base, a data synthesis unit, a processor, a display unit, a storage unit, a management unit, a position synchronization unit, a personnel delineation unit and a personnel synchronization unit;
the distribution base stores a network distribution diagram of a distribution network in a controlled area, and the network distribution diagram is an erection relation between each cable and a circuit node; the node division unit is used for carrying out node division operation on a controlled area power distribution network in a power distribution base to obtain a core selection ring formed by a plurality of core nodes and related power distribution nodes; transmitting the core selection ring to a node position library, a node current monitoring unit and a node voltage monitoring unit;
the node position library receives the core selection ring transmitted by the node dividing unit and the corresponding core node;
the node current monitoring unit and the node voltage monitoring unit are used for detecting node current and node voltage of the nuclear selection ring and the corresponding nuclear nodes thereof, and transmitting the node current and the node voltage of all power distribution nodes in the corresponding nuclear selection ring to the data integration unit, and the data integration unit is used for carrying out abnormal analysis on the node current and the node voltage by combining with the node position library to obtain abnormal information formed by all abnormal nodes and investigation information formed by all investigation selection rings;
the data integration unit is used for transmitting the abnormal information and the troubleshooting information to the processor, and the processor is used for transmitting the abnormal information and the troubleshooting information to the personnel delineation unit;
the position synchronization unit is used for synchronizing the real-time position of a maintenance worker, namely the maintenance position; the personnel synchronization unit is used for synchronizing the number of repair tasks on the body of the current maintenance personnel, and the number of repair tasks refers to the number of repair tasks still on the body of the corresponding maintenance personnel; when the number of the repair tasks is zero, indicating that the maintenance personnel is in an idle state;
the personnel delineation unit is used for carrying out maintenance designated analysis on abnormal information and troubleshooting information by combining the position synchronization unit and the personnel synchronization unit, and the specific analysis steps are as follows:
SS 01: acquiring all abnormal information and troubleshooting information;
SS 02: when the check selection circle in which the abnormal information is located appears in the troubleshooting information, ignoring the corresponding abnormal information; marking the position of the core node of the core selection circle corresponding to the troubleshooting information as a maintenance position;
SS 03: meanwhile, the position of the abnormal information is marked as a maintenance position;
SS 04: obtaining all maintenance positions;
SS 05: selecting a maintenance position; selecting according to the sequence of time from morning to evening, and randomly selecting if the time is the same;
SS 06: acquiring real-time positions and the number of repair tasks of all maintenance personnel;
SS 07: acquiring the distance between all maintenance personnel and a maintenance position, and marking the distance as a maintenance distance Pj, wherein j is 1.. n; the number of repair tasks for the repair crew is correspondingly marked Rwj, j 1.. n; rwj correspond to Pj one-to-one;
SS 08: calculating a matching inverse value Qpj of a maintenance worker according to a formula, wherein Qpj is 0.423 Rwj +0.577 Pj, and 0.423 and 0.577 are preset weights;
SS 09: marking the maintenance personnel corresponding to the minimum matching inverse value Qpj as the selected maintenance personnel of the maintenance position; adding one to the number of corresponding repair tasks;
SS 10: sequentially selecting the next maintenance position, and repeating the steps SS06-SS09 until all the maintenance positions are processed; distributing corresponding maintenance personnel;
the management unit is in communication connection with the processor.
Further, the node division operation steps are as follows:
the method comprises the following steps: firstly, acquiring a network distribution map of a power distribution network in a controlled area;
step two: acquiring all power distribution nodes, wherein the power distribution nodes are cross points among all lines; marking a power distribution node as Ji, i ═ 1.. n;
step three: acquiring the number of first-layer associated points of each power distribution node, wherein the acquisition mode of the first-layer associated points is as follows:
s1: obtaining a corresponding power distribution node J1 by changing i to 1;
s2: acquiring other power distribution nodes directly connected with the power distribution node J1, and marking the corresponding other power distribution nodes as first-layer association points of J1;
s3: obtaining the number of first-layer association points, and marking the number as a first-layer association point G1;
s4: repeating steps S1-S3 by making i equal to i + 1; obtaining a first point G2 of the power distribution node J2;
s5: repeating the step S4 until the processing on all the power distribution nodes Ji is completed; obtaining the number Gi of first nodes of all power distribution nodes Ji, wherein the i is 1.. n, and Gi corresponds to Ji one by one;
step four: acquiring the number of the sublayer associated points of each power distribution node, wherein the acquisition mode of the sublayer associated points is as follows:
s1: obtaining a corresponding power distribution node J1 by changing i to 1;
s2: acquiring other power distribution nodes indirectly connected with the power distribution node J1, wherein the indirect connection is that the corresponding power distribution node can be connected only through an intermediate power distribution node; marking the nodes meeting the condition as corresponding secondary layer association points of the power distribution node J1;
s3: obtaining the number of the secondary level association points, and marking the number as a secondary point number C1;
s4: repeating steps S1-S3 by making i equal to i + 1; obtaining the number C2 of secondary nodes of the power distribution node J2;
s5: repeating the step S4 until the processing on all the power distribution nodes Ji is completed; obtaining the number Ci of secondary nodes of all power distribution nodes Ji, wherein i is 1.. n, and Ci corresponds to Ji and Gi one by one;
step five: acquiring a power distribution node Ji and a secondary point Ci and a primary point Gi corresponding to the power distribution node Ji; and (3) selecting the nodes, wherein the specific selection process is as follows:
SS 1: calculating a fusion value Ri of the power distribution node Ji according to a formula, wherein Ri is 0.356 Ci +0.644 Gi;
in the formula, 0.356 and 0.644 are weights corresponding to the factors, and since Ci and Gi have different influences on the final result, the weights are introduced;
SS 2: marking a power distribution node Ji meeting the condition that Ri is more than or equal to X1 as a ring-fused node Qi, wherein i is 1.. m, and m is less than n; wherein X1 is a preset value; the set value ensures that all power distribution nodes cannot be selected as circle fusion nodes;
step six: and carrying out region division according to the ring-fused node Qi, wherein the specific division steps are as follows:
SS 1: optionally, selecting a circle of fusion nodes Qi;
SS 2: marking the corresponding selected circle-melting node as a core node, and acquiring X2 first-layer association points and X3 second-layer association points of the core node, wherein X2 and X3 are preset values; marking the selected X2 first-layer association points, X3 second-layer association points and core nodes as core selection circles;
SS 3: after removing the ring-fused nodes in the nuclear selection ring, repeating the steps SS1-SS3 to obtain a plurality of nuclear selection rings until the last remaining ring-fused nodes are zero;
if the rest power distribution nodes are remained, adding the rest power distribution nodes into the core selection circle where the nearest core node is located, wherein the nearest core node means that the number of the transfer power distribution nodes which need to be used for reaching the core node is the least, and if more than two nearest core nodes exist, optionally selecting the core selection circle where the nearest core node is located for adding;
and if the final residual ring fusion node is not zero but the residual power distribution nodes do not meet X2 first-layer association points and X3 second-layer association points, performing associated ring selection, wherein the specific associated ring selection mode is as follows: selecting a core selection ring where the core node with the closest addition distance is positioned for all the rest power distribution nodes;
SS 4: obtaining a core selection ring formed by a plurality of core nodes and related power distribution nodes;
step seven: and transmitting the core selection ring to a node position library, a node current monitoring unit and a node voltage monitoring unit.
Further, the specific process of the anomaly analysis is as follows:
s01: acquiring all nuclear selection circles;
s02: selecting a core selection ring, and acquiring node currents and node voltages of all power distribution nodes in the core selection ring;
s03: calculating the mean values of all node currents and node voltages, then calculating the absolute values of the difference values of the real-time node currents and the real-time node voltages of all power distribution nodes and the corresponding mean values, and respectively marking the two values as a current-equalizing difference value and a voltage-equalizing difference value;
s04: if any value of the current-sharing difference value and the voltage-sharing difference value exceeds X4, marking the corresponding power distribution node as an abnormal node; x4 is a preset value;
s05: if the proportion of the number of the abnormal nodes in the nuclear selection circle to the total number exceeds X5, marking the nuclear selection circle as a troubleshooting selection circle; x5 is a preset value;
s06: and (4) selecting the next core selection circle, and repeating the steps S02-S06 until all the core selection circles are processed, so as to obtain the abnormal information formed by all the abnormal nodes and the troubleshooting information formed by all the troubleshooting selection circles.
Further, the processor is also used for stamping the abnormal information and the troubleshooting information to form an abnormal record, the processor is used for transmitting the abnormal record to the display unit for displaying, and the processor is used for transmitting the abnormal record to the storage unit for real-time storage.
The invention has the beneficial effects that:
according to the method, a network distribution diagram of the power distribution network is obtained, wherein the network distribution diagram is an erection relation between each cable and a circuit node; then, all nodes in the power distribution network are divided and associated by means of a node dividing unit in the fault processing system to obtain a plurality of nuclear selection rings, the nodes in the nuclear selection rings are monitored in real time, and the nuclear selection rings are marked as corresponding parts needing to be thoroughly checked under the condition that certain conditions are met; rapidly positioning the fault according to the mode to obtain a maintenance position;
secondly, intelligently appointing proper personnel to the positioned maintenance position for maintenance by means of a personnel delineating unit, a position synchronization unit and a personnel synchronization unit in the fault processing system, and distributing the most proper maintenance personnel on the premise of ensuring that the power grid fault processing is finished in the fastest time by specifically combining the position of the current maintenance personnel and the number of the maintenance tasks at hand; the invention is simple, effective and easy to use.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, a method for processing a fault of a power distribution network based on voltage and current parameter detection includes the following steps:
the method comprises the following steps: acquiring a network distribution map of the power distribution network, wherein the network distribution map is an erection relation between each cable and a circuit node;
step two: rapidly positioning the fault by means of a fault processing system to obtain a maintenance position;
step three: the fault processing system is used for intelligently appointing proper personnel to the located maintenance position for maintenance;
step four: and completing fault processing.
The fault processing system comprises a power distribution base, a node dividing unit, a node current monitoring unit, a node voltage monitoring unit, a node position base, a data synthesis unit, a processor, a display unit, a storage unit, a management unit, a position synchronization unit, a personnel delineation unit and a personnel synchronization unit;
the distribution base stores a network distribution diagram of a distribution network in a controlled area, and the network distribution diagram is an erection relation between each cable and a circuit node; the node division unit is used for carrying out node division operation on a controlled area power distribution network in a power distribution base, and the specific node division operation steps are as follows:
the method comprises the following steps: firstly, acquiring a network distribution map of a power distribution network in a controlled area;
step two: acquiring all power distribution nodes, wherein the power distribution nodes are cross points among all lines; marking a power distribution node as Ji, i ═ 1.. n;
step three: acquiring the number of first-layer associated points of each power distribution node, wherein the acquisition mode of the first-layer associated points is as follows:
s1: obtaining a corresponding power distribution node J1 by changing i to 1;
s2: acquiring other power distribution nodes directly connected with the power distribution node J1, and marking the corresponding other power distribution nodes as first-layer association points of J1;
s3: obtaining the number of first-layer association points, and marking the number as a first-layer association point G1;
s4: repeating steps S1-S3 by making i equal to i + 1; obtaining a first point G2 of the power distribution node J2;
s5: repeating the step S4 until the processing on all the power distribution nodes Ji is completed; obtaining the number Gi of first nodes of all power distribution nodes Ji, wherein the i is 1.. n, and Gi corresponds to Ji one by one;
step four: acquiring the number of the sublayer associated points of each power distribution node, wherein the acquisition mode of the sublayer associated points is as follows:
s1: obtaining a corresponding power distribution node J1 by changing i to 1;
s2: acquiring other power distribution nodes indirectly connected with the power distribution node J1, wherein the indirect connection is that the corresponding power distribution node can be connected only through an intermediate power distribution node; marking the nodes meeting the condition as corresponding secondary layer association points of the power distribution node J1;
s3: obtaining the number of the secondary level association points, and marking the number as a secondary point number C1;
s4: repeating steps S1-S3 by making i equal to i + 1; obtaining the number C2 of secondary nodes of the power distribution node J2;
s5: repeating the step S4 until the processing on all the power distribution nodes Ji is completed; obtaining the number Ci of secondary nodes of all power distribution nodes Ji, wherein i is 1.. n, and Ci corresponds to Ji and Gi one by one;
step five: acquiring a power distribution node Ji and a secondary point Ci and a primary point Gi corresponding to the power distribution node Ji; and (3) selecting the nodes, wherein the specific selection process is as follows:
SS 1: calculating a fusion value Ri of the power distribution node Ji according to a formula, wherein Ri is 0.356 Ci +0.644 Gi;
in the formula, 0.356 and 0.644 are weights corresponding to the factors, and since Ci and Gi have different influences on the final result, the weights are introduced;
SS 2: marking a power distribution node Ji meeting the condition that Ri is more than or equal to X1 as a ring-fused node Qi, wherein i is 1.. m, and m is less than n; wherein X1 is a preset value; the set value ensures that all power distribution nodes cannot be selected as circle fusion nodes;
step six: and carrying out region division according to the ring-fused node Qi, wherein the specific division steps are as follows:
SS 1: optionally, selecting a circle of fusion nodes Qi;
SS 2: marking the corresponding selected circle-melting node as a core node, and acquiring X2 first-layer association points and X3 second-layer association points of the core node, wherein X2 and X3 are preset values; marking the selected X2 first-layer association points, X3 second-layer association points and core nodes as core selection circles;
SS 3: after the circle-fused node in the nuclear selection circle is removed, the steps SS1-SS3 are repeated to obtain a plurality of nuclear selection circles until the last remaining circle-fused node is zero;
if the rest power distribution nodes are remained, adding the rest power distribution nodes into the core selection circle where the nearest core node is located, wherein the nearest core node means that the number of the transfer power distribution nodes which need to be used for reaching the core node is the least, and if more than two nearest core nodes exist, optionally selecting the core selection circle where the nearest core node is located for adding;
and if the final residual ring fusion node is not zero but the residual power distribution nodes do not meet X2 first-layer association points and X3 second-layer association points, performing associated ring selection, wherein the specific associated ring selection mode is as follows: selecting a core selection ring where the core node with the closest addition distance is positioned for all the rest power distribution nodes;
SS 4: obtaining a core selection ring formed by a plurality of core nodes and related power distribution nodes;
step seven: transmitting the core selection ring to a node position library, a node current monitoring unit and a node voltage monitoring unit;
the node position library receives the core selection ring transmitted by the node dividing unit and the corresponding core node;
the node current monitoring unit and the node voltage monitoring unit are used for detecting node current and node voltage of the core selection ring and the corresponding core nodes thereof, transmitting the node current and the node voltage of all power distribution nodes in the corresponding core selection ring to the data integration unit, and the data integration unit is used for carrying out abnormity analysis on the node current and the node voltage by combining with the node position library, wherein the specific abnormity analysis process is as follows:
s01: acquiring all nuclear selection circles;
s02: selecting a core selection ring, and acquiring node currents and node voltages of all power distribution nodes in the core selection ring;
s03: calculating the mean values of all node currents and node voltages, then calculating the absolute values of the difference values of the real-time node currents and the real-time node voltages of all power distribution nodes and the corresponding mean values, and respectively marking the two values as a current-equalizing difference value and a voltage-equalizing difference value;
s04: if any value of the current-sharing difference value and the voltage-sharing difference value exceeds X4, marking the corresponding power distribution node as an abnormal node; x4 is a preset value; if the values of the node current and the node voltage are zero or exceed the set values, the node current and the node voltage are marked as abnormal nodes;
s05: if the proportion of the number of the abnormal nodes in the nuclear selection circle to the total number exceeds X5, marking the nuclear selection circle as a troubleshooting selection circle; x5 is a preset value;
s06: selecting the next core selection circle, and repeating the steps S02-S06 until all the core selection circles are processed, so as to obtain the abnormal information formed by all the abnormal nodes and the troubleshooting information formed by all the troubleshooting selection circles;
the data integration unit is used for transmitting the abnormal information and the troubleshooting information to the processor, and the processor is used for transmitting the abnormal information and the troubleshooting information to the personnel delineation unit;
the position synchronization unit is used for synchronizing the real-time position of a maintenance worker, namely the maintenance position; the personnel synchronization unit is used for synchronizing the number of repair tasks on the body of the current maintenance personnel, and the number of repair tasks refers to the number of repair tasks still on the body of the corresponding maintenance personnel; when the number of the repair tasks is zero, indicating that the maintenance personnel is in an idle state;
the personnel delineation unit is used for carrying out maintenance designated analysis on abnormal information and troubleshooting information by combining the position synchronization unit and the personnel synchronization unit, and the specific analysis steps are as follows:
SS 01: acquiring all abnormal information and troubleshooting information;
SS 02: when the check selection circle in which the abnormal information is located appears in the troubleshooting information, ignoring the corresponding abnormal information; marking the position of the core node of the core selection circle corresponding to the troubleshooting information as a maintenance position;
SS 03: meanwhile, the position of the abnormal information is marked as a maintenance position;
SS 04: obtaining all maintenance positions;
SS 05: selecting a maintenance position; selecting according to the sequence of time from morning to evening, and randomly selecting if the time is the same;
SS 06: acquiring real-time positions and the number of repair tasks of all maintenance personnel;
SS 07: acquiring the distance between all maintenance personnel and a maintenance position, and marking the distance as a maintenance distance Pj, wherein j is 1.. n; the number of repair tasks for the repair crew is correspondingly marked Rwj, j 1.. n; rwj correspond to Pj one-to-one;
SS 08: calculating a matching inverse value Qpj of a maintenance worker according to a formula, wherein Qpj is 0.423 Rwj +0.577 Pj, and 0.423 and 0.577 are preset weights;
SS 09: marking the maintenance personnel corresponding to the minimum matching inverse value Qpj as the selected maintenance personnel of the maintenance position; adding one to the number of corresponding repair tasks;
SS 10: sequentially selecting the next maintenance position, and repeating the steps SS06-SS09 until all the maintenance positions are processed; distributing corresponding maintenance personnel;
the processor is also used for stamping the abnormal information and the troubleshooting information into an abnormal record, transmitting the abnormal record to the display unit for displaying, and transmitting the abnormal record to the storage unit for real-time storage;
the management unit is in communication connection with the processor; the management unit is used for recording preset values X1-X5.
A power distribution network fault processing method based on voltage and current parameter detection specifically comprises the following steps of firstly, obtaining a network distribution map of a power distribution network, wherein the network distribution map is an erection relation between each cable and a circuit node; then, all nodes in the power distribution network are divided and associated by means of a node dividing unit in the fault processing system to obtain a plurality of nuclear selection rings, the nodes in the nuclear selection rings are monitored in real time, and the nuclear selection rings are marked as corresponding parts needing to be thoroughly checked under the condition that certain conditions are met; rapidly positioning the fault according to the mode to obtain a maintenance position;
secondly, intelligently appointing proper personnel to the positioned maintenance position for maintenance by means of a personnel delineating unit, a position synchronization unit and a personnel synchronization unit in the fault processing system, and distributing the most proper maintenance personnel on the premise of ensuring that the power grid fault processing is finished in the fastest time by specifically combining the position of the current maintenance personnel and the number of the maintenance tasks at hand; the invention is simple, effective and easy to use.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (4)
1. A power distribution network fault processing method based on voltage and current parameter detection is characterized by comprising the following steps:
the method comprises the following steps: acquiring a network distribution map of the power distribution network, wherein the network distribution map is an erection relation between each cable and a circuit node;
step two: rapidly positioning the fault by means of a fault processing system to obtain a maintenance position;
step three: the fault processing system is used for intelligently appointing proper personnel to the located maintenance position for maintenance;
step four: completing fault processing;
the fault processing system in the third step comprises a power distribution base, a node dividing unit, a node current monitoring unit, a node voltage monitoring unit, a node position base, a data synthesis unit, a processor, a display unit, a storage unit, a management unit, a position synchronization unit, a personnel delineation unit and a personnel synchronization unit;
the distribution base stores a network distribution diagram of a distribution network in a controlled area, and the network distribution diagram is an erection relation between each cable and a circuit node; the node division unit is used for carrying out node division operation on a controlled area power distribution network in a power distribution base to obtain a core selection ring formed by a plurality of core nodes and related power distribution nodes; transmitting the core selection ring to a node position library, a node current monitoring unit and a node voltage monitoring unit;
the node position library receives the core selection ring transmitted by the node dividing unit and the corresponding core node;
the node current monitoring unit and the node voltage monitoring unit are used for detecting node current and node voltage of the nuclear selection ring and the corresponding nuclear nodes thereof, and transmitting the node current and the node voltage of all power distribution nodes in the corresponding nuclear selection ring to the data integration unit, and the data integration unit is used for carrying out abnormal analysis on the node current and the node voltage by combining with the node position library to obtain abnormal information formed by all abnormal nodes and investigation information formed by all investigation selection rings;
the data integration unit is used for transmitting the abnormal information and the troubleshooting information to the processor, and the processor is used for transmitting the abnormal information and the troubleshooting information to the personnel delineation unit;
the position synchronization unit is used for synchronizing the real-time position of a maintenance worker, namely the maintenance position; the personnel synchronization unit is used for synchronizing the number of repair tasks on the body of the current maintenance personnel, and the number of repair tasks refers to the number of repair tasks still on the body of the corresponding maintenance personnel; when the number of the repair tasks is zero, indicating that the maintenance personnel is in an idle state;
the personnel delineation unit is used for carrying out maintenance designated analysis on abnormal information and troubleshooting information by combining the position synchronization unit and the personnel synchronization unit, and the specific analysis steps are as follows:
SS 01: acquiring all abnormal information and troubleshooting information;
SS 02: when the check selection circle in which the abnormal information is located appears in the troubleshooting information, ignoring the corresponding abnormal information; marking the position of the core node of the core selection circle corresponding to the troubleshooting information as a maintenance position;
SS 03: meanwhile, the position of the abnormal information is marked as a maintenance position;
SS 04: obtaining all maintenance positions;
SS 05: selecting a maintenance position; selecting according to the sequence of time from morning to evening, and randomly selecting if the time is the same;
SS 06: acquiring real-time positions and the number of repair tasks of all maintenance personnel;
SS 07: acquiring the distance between all maintenance personnel and a maintenance position, and marking the distance as a maintenance distance Pj, wherein j is 1.. n; the number of repair tasks for the repair crew is correspondingly marked Rwj, j 1.. n; rwj correspond to Pj one-to-one;
SS 08: calculating a matching inverse value Qpj of a maintenance worker according to a formula, wherein Qpj is 0.423 Rwj +0.577 Pj, and 0.423 and 0.577 are preset weights;
SS 09: marking the maintenance personnel corresponding to the minimum matching inverse value Qpj as the selected maintenance personnel of the maintenance position; adding one to the number of corresponding repair tasks;
SS 10: sequentially selecting the next maintenance position, and repeating the steps SS06-SS09 until all the maintenance positions are processed; distributing corresponding maintenance personnel;
the management unit is in communication connection with the processor.
2. The method for processing the fault of the power distribution network based on the voltage and current parameter detection is characterized in that the node division operation steps are as follows:
the method comprises the following steps: firstly, acquiring a network distribution map of a power distribution network in a controlled area;
step two: acquiring all power distribution nodes, wherein the power distribution nodes are cross points among all lines; marking a power distribution node as Ji, i ═ 1.. n;
step three: acquiring the number of first-layer associated points of each power distribution node, wherein the acquisition mode of the first-layer associated points is as follows:
s1: obtaining a corresponding power distribution node J1 by changing i to 1;
s2: acquiring other power distribution nodes directly connected with the power distribution node J1, and marking the corresponding other power distribution nodes as first-layer association points of J1;
s3: obtaining the number of first-layer association points, and marking the number as a first-layer association point G1;
s4: repeating steps S1-S3 by making i equal to i + 1; obtaining a first point G2 of the power distribution node J2;
s5: repeating the step S4 until the processing on all the power distribution nodes Ji is completed; obtaining the number Gi of first nodes of all power distribution nodes Ji, wherein the i is 1.. n, and Gi corresponds to Ji one by one;
step four: acquiring the number of the sublayer associated points of each power distribution node, wherein the acquisition mode of the sublayer associated points is as follows:
s1: obtaining a corresponding power distribution node J1 by changing i to 1;
s2: acquiring other power distribution nodes indirectly connected with the power distribution node J1, wherein the indirect connection is that the corresponding power distribution node can be connected only through an intermediate power distribution node; marking the nodes meeting the condition as corresponding secondary layer association points of the power distribution node J1;
s3: obtaining the number of the secondary level association points, and marking the number as a secondary point number C1;
s4: repeating steps S1-S3 by making i equal to i + 1; obtaining the number C2 of secondary nodes of the power distribution node J2;
s5: repeating the step S4 until the processing on all the power distribution nodes Ji is completed; obtaining the number Ci of secondary nodes of all power distribution nodes Ji, wherein i is 1.. n, and Ci corresponds to Ji and Gi one by one;
step five: acquiring a power distribution node Ji and a secondary point Ci and a primary point Gi corresponding to the power distribution node Ji; and (3) selecting the nodes, wherein the specific selection process is as follows:
SS 1: calculating a fusion value Ri of the power distribution node Ji according to a formula, wherein Ri is 0.356 Ci +0.644 Gi;
in the formula, 0.356 and 0.644 are weights of corresponding factors;
SS 2: marking a power distribution node Ji meeting the condition that Ri is more than or equal to X1 as a ring-fused node Qi, wherein i is 1.. m, and m is less than n; wherein X1 is a preset value; the set value ensures that all power distribution nodes cannot be selected as circle fusion nodes;
step six: and carrying out region division according to the ring-fused node Qi, wherein the specific division steps are as follows:
SS 1: optionally, selecting a circle of fusion nodes Qi;
SS 2: marking the corresponding selected circle-melting node as a core node, and acquiring X2 first-layer association points and X3 second-layer association points of the core node, wherein X2 and X3 are preset values; marking the selected X2 first-layer association points, X3 second-layer association points and core nodes as core selection circles;
SS 3: after removing the ring-fused nodes in the nuclear selection ring, repeating the steps SS1-SS3 to obtain a plurality of nuclear selection rings until the last remaining ring-fused nodes are zero;
if the rest power distribution nodes are remained, adding the rest power distribution nodes into the core selection circle where the nearest core node is located, wherein the nearest core node means that the number of the transfer power distribution nodes which need to be used for reaching the core node is the least, and if more than two nearest core nodes exist, optionally selecting the core selection circle where the nearest core node is located for adding;
and if the final residual ring fusion node is not zero but the residual power distribution nodes do not meet X2 first-layer association points and X3 second-layer association points, performing associated ring selection, wherein the specific associated ring selection mode is as follows: selecting a core selection ring where the core node with the closest addition distance is positioned for all the rest power distribution nodes;
SS 4: obtaining a core selection ring formed by a plurality of core nodes and related power distribution nodes;
step seven: and transmitting the core selection ring to a node position library, a node current monitoring unit and a node voltage monitoring unit.
3. The method for processing the power distribution network fault based on the voltage and current parameter detection as claimed in claim 1, wherein the specific process of the anomaly analysis is as follows:
s01: acquiring all nuclear selection circles;
s02: selecting a core selection ring, and acquiring node currents and node voltages of all power distribution nodes in the core selection ring;
s03: calculating the mean values of all node currents and node voltages, then calculating the absolute values of the difference values of the real-time node currents and the real-time node voltages of all power distribution nodes and the corresponding mean values, and respectively marking the two values as a current-equalizing difference value and a voltage-equalizing difference value;
s04: if any value of the current-sharing difference value and the voltage-sharing difference value exceeds X4, marking the corresponding power distribution node as an abnormal node; x4 is a preset value;
s05: if the proportion of the number of the abnormal nodes in the nuclear selection circle to the total number exceeds X5, marking the nuclear selection circle as a troubleshooting selection circle; x5 is a preset value;
s06: and (4) selecting the next core selection circle, and repeating the steps S02-S06 until all the core selection circles are processed, so as to obtain the abnormal information formed by all the abnormal nodes and the troubleshooting information formed by all the troubleshooting selection circles.
4. The power distribution network fault handling method based on voltage and current parameter detection according to claim 1, wherein the processor is further configured to timestamp the exception information and the troubleshooting information to form an exception record, the processor is configured to transmit the exception record to the display unit for display, and the processor is configured to transmit the exception record to the storage unit for real-time storage.
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