CN111650474A - Power distribution network interphase short circuit fault section positioning method based on multi-system fusion - Google Patents
Power distribution network interphase short circuit fault section positioning method based on multi-system fusion Download PDFInfo
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- CN111650474A CN111650474A CN202010522869.8A CN202010522869A CN111650474A CN 111650474 A CN111650474 A CN 111650474A CN 202010522869 A CN202010522869 A CN 202010522869A CN 111650474 A CN111650474 A CN 111650474A
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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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- 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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Abstract
The invention discloses a multi-system fusion-based power distribution network interphase short-circuit fault section positioning method, which takes a power distribution automation system as a core, a GIS system, a PMS system, an EMS system and a power consumption information acquisition system as fault data sources, fuses internal data of each system according to a certain standard, and analyzes and processes the data to realize section positioning of the interphase short-circuit fault of a power distribution network, and comprises the steps of identifying a fault line, determining the number of a distribution transformer and the line section of the transformer in the fault line, determining the information of the distribution transformer, collecting the information of the distribution transformer in the fault line and determining a fault section. The invention provides a multi-system data fusion power distribution network interphase short-circuit fault section positioning method, interface data exchange of multiple systems is realized by utilizing an interface access technology of each system, interphase short-circuit fault section positioning of a power distribution network is realized, faults of the power distribution network can be quickly positioned in sections, and power supply reliability of the power distribution network is improved.
Description
The technical field is as follows:
the invention relates to a method for detecting lines with interphase short-circuit faults in a power distribution network by utilizing multi-system data fusion and finally realizing section positioning, belonging to the technical field of power distribution network fault judgment.
Secondly, background art:
the interphase short-circuit fault has a certain proportion in the power distribution network fault, and with the development and application of power distribution automation, the problem of timely and accurately positioning the fault also becomes a part of the power distribution automation function. At present, when each system of a power distribution network solves the problem of fault location, the systems are mutually independent when in operation, and the data sharing and service function integration level is not high enough, so that the fault location cannot be carried out more quickly.
Thirdly, the invention content:
the technical problem to be solved by the invention is as follows: aiming at the basis that each system in the traditional distribution automation system is independently operated when solving the problem of distribution network fault location, the method for locating the interphase short circuit fault section of the distribution network based on multi-system fusion is provided, interface data exchange of the multi-system is realized by utilizing the interface access technology of each system, and data fusion of each system in the distribution automation is realized; the data fusion of the power utilization information acquisition system and the power distribution automation system is realized by utilizing the data acquisition function of the power utilization information acquisition system, and the fault section positioning is realized by comprehensively analyzing the data.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a multi-system fusion-based power distribution network interphase short-circuit fault section positioning method is characterized in that a power distribution automation system is used as a core, a GIS system, a PMS system, an EMS system and a power utilization information acquisition system are used as fault data sources, internal data of each system are fused according to a certain standard, and section positioning of power distribution network interphase short-circuit faults is realized through analysis and processing of the data, and the method comprises the following specific steps:
A. identifying a fault line:
after an interphase short circuit fault occurs in a power distribution network line, the current mutation detected by a relay protection device acts to further protect the device, and a line fault area is removed, so that the current value detected at the outlet of a transformer substation line suddenly drops; after a line fails, real-time monitoring of a scheduling system can judge circuit mutation conditions in the line at an outlet of a transformer substation, the hopping rate of current in the line is compared with a set threshold value, the set threshold value is 50%, if the current hopping value at the outlet of the line exceeds the threshold value, the line has a short-circuit fault, and after the line with the fault is identified, information of the line is fed back to a DAS (data acquisition system);
B. determining the number of a distribution transformer carried by a fault line and a line segment where the transformer is located:
calling a power supply range analysis function of a GIS (geographic information System) of the power distribution network, analyzing the fault line, analyzing the power supply range of the power distribution line by using a power distribution network analysis model, obtaining the number of the distribution transformer carried by the fault line, finding out the line segment where the distribution transformer is located, and feeding back the information to the DAS (data acquisition system);
C. determining information of the distribution transformer:
obtaining information of the distribution transformer by using ledger information managed in the PMS;
D. collecting information of a distribution transformer in a fault line:
the power utilization information acquisition system is used for surveying the running state information of the distribution transformer in the fault line, acquiring the voltage and current data information of the distribution transformer in the line, judging the electrified state of the distribution transformer in the line and transmitting the electrified information of the distribution transformer in the fault line to the DAS system;
E. determining a fault section:
aiming at the data information of the electrical equipment in the fault line, the DAS carries out comprehensive analysis on the distribution equipment information and the line topological state quantity fed back by the four systems; the method comprises the steps of determining a specific fault line according to a D5000 system, obtaining a fault topological structure in a GIS system and a specific section of line or branch line to which a distribution transformer in the line belongs, detecting specific ID information of the distribution transformer in the fault line from a PMS system, obtaining the charged state information of all the distribution transformers in the fault line through the data acquisition function of an electricity consumption information acquisition system, determining specific distribution transformers in a voltage-free state, transmitting relevant information data of the four systems about the fault line to a DAS, and finally judging a fault interval.
The invention has the following positive beneficial effects:
1. the invention provides a method for positioning interphase short circuit fault sections of a power distribution network by using multi-system data fusion in power distribution automation, which can be used for quickly positioning sections of faults of the power distribution network and improving the power supply reliability of the power distribution network.
2. The invention provides a multi-system data fusion power distribution network interphase short-circuit fault section positioning method aiming at the basis that each system in a traditional power distribution automation system is operated independently when solving the problem of power distribution network fault positioning, and realizes the positioning of the power distribution network interphase short-circuit fault section.
Fourthly, explanation of the attached drawings:
FIG. 1 is an overall architecture diagram of multi-system fusion;
FIG. 2 is a data information flow diagram for power consumption information acquisition access;
fig. 3 is a flow chart of function implementation.
The fifth embodiment is as follows:
reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 to 3, a method for locating an interphase short-circuit fault section of a power distribution network based on multi-system fusion, which takes a power distribution automation system as a core, and takes external systems such as a GIS system, a PMS system, an EMS system, a power consumption information acquisition system and the like as fault data sources, and accesses interfaces of the systems to realize data fusion of the systems; the distribution transformer data acquisition function of the power utilization information acquisition system transmits the acquired distribution transformer station account data and the acquired power distribution data information to the DAS system database through a power distribution network information exchange bus; the DSA system analyzes the received data information and reflects the obtained positioning result to a display interface, and the DSA system comprises the following steps:
A. identifying a fault line:
after an interphase short circuit fault occurs in a power distribution network line, the current mutation detected by a relay protection device acts to further protect the device, and a line fault area is removed, so that the current value detected at the outlet of a transformer substation line suddenly drops; after a line fails, real-time monitoring of a scheduling system can judge circuit mutation conditions in the line at an outlet of a transformer substation, the hopping rate of current in the line is compared with a set threshold value, the set threshold value is 50%, if the current hopping value at the outlet of the line exceeds the threshold value, the line has a short-circuit fault, and after the line with the fault is identified, information of the line is fed back to a DAS (data acquisition system);
B. determining the number of a distribution transformer carried by a fault line and a line segment where the transformer is located:
calling a power supply range analysis function of a GIS (geographic information System) of the power distribution network, analyzing the fault line, analyzing the power supply range of the power distribution line by using a power distribution network analysis model, obtaining the number of the distribution transformer carried by the fault line, finding out the line segment where the distribution transformer is located, and feeding back the information to the DAS (data acquisition system);
C. determining information of the distribution transformer:
obtaining information of the distribution transformer by using ledger information managed in the PMS;
D. collecting information of a distribution transformer in a fault line:
the power utilization information acquisition system is used for surveying the running state information of the distribution transformer in the fault line, acquiring the voltage and current data information of the distribution transformer in the line, judging the electrified state of the distribution transformer in the line and transmitting the electrified information of the distribution transformer in the fault line to the DAS system;
E. determining a fault section:
aiming at the data information of the electrical equipment in the fault line, the DAS carries out comprehensive analysis on the distribution equipment information and the line topological state quantity fed back by the four systems; the method comprises the steps of determining a specific fault line according to a D5000 system, obtaining a fault topological structure in a GIS system and a specific section of line or branch line to which a distribution transformer in the line belongs, detecting specific ID information of the distribution transformer in the fault line from a PMS system, obtaining the charged state information of all the distribution transformers in the fault line through the data acquisition function of an electricity consumption information acquisition system, determining specific distribution transformers in a voltage-free state, transmitting relevant information data of the four systems about the fault line to a DAS, and finally judging a fault interval.
The invention provides a method for positioning interphase short circuit fault sections of a power distribution network by using multi-system data fusion in power distribution automation, which can be used for quickly positioning sections of faults of the power distribution network and improving the power supply reliability of the power distribution network.
The invention provides a multi-system data fusion power distribution network interphase short-circuit fault section positioning method aiming at the basis that each system in a traditional power distribution automation system is operated independently when solving the problem of power distribution network fault positioning, and realizes the positioning of the power distribution network interphase short-circuit fault section.
Claims (1)
1. A multi-system fusion-based power distribution network interphase short-circuit fault section positioning method is characterized in that a power distribution automation system is used as a core, a GIS system, a PMS system, an EMS system and a power utilization information acquisition system are used as fault data sources, internal data of each system are fused according to a certain standard, and section positioning of power distribution network interphase short-circuit faults is realized through analysis and processing of the data, and the method comprises the following specific steps:
A. identifying a fault line:
after an interphase short circuit fault occurs in a power distribution network line, the current mutation detected by a relay protection device acts to further protect the device, and a line fault area is removed, so that the current value detected at the outlet of a transformer substation line suddenly drops; after a line fails, real-time monitoring of a scheduling system can judge circuit mutation conditions in the line at an outlet of a transformer substation, the hopping rate of current in the line is compared with a set threshold value, the set threshold value is 50%, if the current hopping value at the outlet of the line exceeds the threshold value, the line has a short-circuit fault, and after the line with the fault is identified, information of the line is fed back to a DAS (data acquisition system);
B. determining the number of a distribution transformer carried by a fault line and a line segment where the transformer is located:
calling a power supply range analysis function of a GIS (geographic information System) of the power distribution network, analyzing the fault line, analyzing the power supply range of the power distribution line by using a power distribution network analysis model, obtaining the number of the distribution transformer carried by the fault line, finding out the line segment where the distribution transformer is located, and feeding back the information to the DAS (data acquisition system);
C. determining information of the distribution transformer:
obtaining information of the distribution transformer by using ledger information managed in the PMS;
D. collecting information of a distribution transformer in a fault line:
the power utilization information acquisition system is used for surveying the running state information of the distribution transformer in the fault line, acquiring the voltage and current data information of the distribution transformer in the line, judging the electrified state of the distribution transformer in the line and transmitting the electrified information of the distribution transformer in the fault line to the DAS system;
E. determining a fault section:
aiming at the data information of the electrical equipment in the fault line, the DAS carries out comprehensive analysis on the distribution equipment information and the line topological state quantity fed back by the four systems; the method comprises the steps of determining a specific fault line according to a D5000 system, obtaining a fault topological structure in a GIS system and a specific section of line or branch line to which a distribution transformer in the line belongs, detecting specific ID information of the distribution transformer in the fault line from a PMS system, obtaining the charged state information of all the distribution transformers in the fault line through the data acquisition function of an electricity consumption information acquisition system, determining specific distribution transformers in a voltage-free state, transmitting relevant information data of the four systems about the fault line to a DAS, and finally judging a fault interval.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030642A (en) * | 2021-03-03 | 2021-06-25 | 北京天能继保电力科技有限公司 | Automatic field test method and system for feeder automation |
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Application publication date: 20200911 |