CN111654102B - 10 kilovolt distribution station spare power automatic switching abnormal state intelligent diagnosis system - Google Patents
10 kilovolt distribution station spare power automatic switching abnormal state intelligent diagnosis system Download PDFInfo
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- CN111654102B CN111654102B CN202010413068.8A CN202010413068A CN111654102B CN 111654102 B CN111654102 B CN 111654102B CN 202010413068 A CN202010413068 A CN 202010413068A CN 111654102 B CN111654102 B CN 111654102B
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 95
- 238000003745 diagnosis Methods 0.000 title claims abstract description 48
- 238000004364 calculation method Methods 0.000 claims abstract description 31
- 238000013500 data storage Methods 0.000 claims abstract description 11
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Classifications
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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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- 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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- 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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/16—Electric power substations
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Engineering & Computer Science (AREA)
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- Human Computer Interaction (AREA)
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Abstract
An intelligent diagnosis system for the abnormal state of the spare power automatic switching of a 10 kilovolt power distribution station belongs to the field of safety devices. The system comprises a line loss data acquisition module, a bus data acquisition module, a data storage module, an abnormal line loss identification module, an abnormal bus level identification module, a data correction calculation module and a spare power automatic switching abnormal state diagnosis module; the abnormal line loss identification module acquires a line with abnormal line loss in real time; the abnormal busbar level identification module calculates the daily busbar unbalance rate and acquires the busbar with the busbar level abnormal movement and the reverse electric quantity fluctuation in real time; the data correction calculation module recalculates line loss through a line loss correction formula and recalculates bus level through a bus correction formula for the upper bus of the power distribution station with data fluctuation; and the automatic switching equipment abnormal state diagnosis module is used for carrying out state diagnosis of the automatic switching equipment of the power distribution station through correcting the calculation result. The method can judge that the power distribution station with abnormal standby power automatic switching state exists, and realize real-time monitoring and defect elimination of the standby power automatic switching device of the power distribution station.
Description
Technical Field
The invention belongs to the field of emergency protection devices, and particularly relates to an intelligent diagnosis system for a spare power automatic switching abnormal state of a 10 kilovolt power distribution station.
Background
Because the requirements on the power supply reliability are higher and higher, the multi-circuit power supply circuit with two circuit lines and more is provided, and the reliability is generally improved by installing a standby incoming line automatic input device.
The wide application of the spare power automatic switching device (for short, the spare power automatic switching device or the spare power automatic switching device) in the power distribution network simplifies the power grid structure and the protection configuration, reduces the power failure time, and improves the reliability of the short-line load type power supply network of 110kV and below.
However, along with the adverse effect of the device operation time on the reliability of the automatic backup power switching device and the problems of sampling distortion, jump and the like possibly existing in the device, in some cases, the automatic backup power switching device can be in an abnormal operation state, such as the problems that abnormal operation is caused by the fact that a sectionalizer switch is correctly closed and not recovered in time, looped network operation is caused by the fact that the sectionalizer switch is mistakenly closed, the automatic backup power switching device loses protection function when a power grid has subsequent faults, and the reliability and the safety of a power supply network cannot be guaranteed.
Under the prior art condition, the abnormal state of the spare power automatic switching in the power distribution station is generally eliminated through the in-station inspection, but the method consumes a great deal of manpower and time cost, and the real-time performance and the completeness of abnormality defect elimination cannot be ensured.
Therefore, how to utilize early-stage analysis to monitor and intelligently diagnose the state of the automatic backup power switching device in the 10 kilovolt power distribution station is a key measure for ensuring the safe and stable operation of the automatic backup power switching device.
Disclosure of Invention
The invention aims to provide an intelligent diagnosis system for the abnormal state of the spare power automatic switching of a 10 kilovolt power distribution station. By adopting the technical scheme, the power distribution station with the abnormal standby power automatic switching state can be judged, and the abnormal state type can be further accurately diagnosed, so that the real-time monitoring and defect elimination of the power distribution station standby power automatic switching device are realized, and the safe operation level of the power distribution network site is improved.
The technical scheme of the invention is as follows: the intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station is characterized by comprising the following steps of:
the 10 kilovolt power distribution station spare power automatic switching abnormal state intelligent diagnosis system comprises a line loss data acquisition module, a bus data acquisition module, a data storage module, an abnormal line loss identification module, an abnormal bus level identification module, a data correction calculation module and a spare power automatic switching abnormal state diagnosis module;
the line loss data acquisition module is used for acquiring daily input electric quantity and daily output electric quantity data of a 10 kilovolt feeder line on the upper level of the power distribution station;
the bus data acquisition module is used for acquiring daily input electric quantity and daily output electric quantity data of a 10 kilovolt bus of the upper-level substation of the power distribution station;
the data storage module is communicated with the acquisition module part, the identification module and the data correction calculation module and is used for storing 10 kilovolt feeder acquisition information, 10 kilovolt bus acquisition information of the transformer substation and the topological relation of the transformer substation and the power distribution station;
the abnormal line loss identification module calculates the daily line loss of the feeder line and acquires the line with abnormal line loss in real time;
the abnormal busbar level identification module calculates the daily busbar unbalance rate and acquires the busbar with the busbar level abnormal movement and the reverse electric quantity fluctuation in real time;
the data correction calculation module recalculates line loss through a line loss correction formula and recalculates bus level through a bus correction formula for the upper bus of the power distribution station with data fluctuation;
and the automatic switching equipment abnormal state diagnosis module is used for carrying out state diagnosis of the automatic switching equipment of the power distribution station through correcting the calculation result.
Specifically, in the line loss data acquisition module, the input electric quantity, the output electric quantity and the input-output corresponding relation of the upper-level 10 kilovolt feeder line of the power distribution station are taken from the integrated electric quantity and line loss management system, and the data are acquired as a unit.
Specifically, in the bus-bar data acquisition module, the input electric quantity, the output electric quantity and the corresponding relation of the input and output of the 10 kilovolt bus of the upper-level substation of the power distribution station are taken from the electric energy acquisition system, and the data are acquired as a data acquisition unit.
Specifically, in the data storage module, the data of the 10 kilovolt feeder line electric quantity obtained by the line loss data acquisition module and the data of the 10 kilovolt bus electric quantity obtained by the bus data acquisition module are stored in an array mode by taking a day as a unit; and simultaneously storing the topological relation of the transformer substation and the distribution substation taken from the GIS system in daily units.
Specifically, in the abnormal line loss identification module, the daily line loss of 2 10 kilovolt feeder lines at the upper level of the power distribution station is calculated by taking the daily as a unit, and if 2 feeder lines have the condition of abnormal movement at the same time, the abnormal movement line name is output in real time.
Specifically, in the abnormal busbar level identification module, the daily busbar unbalance rate of the upper-level 2-section 10-kilovolt busbar of the power distribution station is calculated by taking the day as a unit, and the busbar name of the busbar level abnormal or the busbar reverse electric quantity fluctuation of a certain section is output in real time.
Further, in the data correction calculation module, the line loss of the 10 kilovolt feeder line on the power distribution station with data fluctuation is recalculated through a line loss correction formula, and the bus level of the 10 kilovolt bus line on the power distribution station with data fluctuation is recalculated through a bus correction formula.
Furthermore, in the automatic spare power automatic switching abnormal state diagnosis module, the state diagnosis of the automatic spare power automatic switching device of the power distribution station is performed through the rule comparison of the line loss correction calculation result and the rule comparison of the bus tie correction calculation result.
Furthermore, the intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station can further accurately diagnose the abnormal state type by judging the power distribution station with the abnormal spare power automatic switching state, so that the real-time monitoring and defect elimination of the spare power automatic switching device of the power distribution station are realized, and the safe operation level of a power distribution network site is improved.
Compared with the prior art, the invention has the advantages that:
1. by adopting the technical scheme, the power distribution station with the abnormal standby power automatic switching state can be judged, and the abnormal state type can be further accurately diagnosed, so that the real-time monitoring and defect elimination of the power distribution station standby power automatic switching device are realized, and the safe operation level of the power distribution network site is improved.
2. According to the technical scheme, the on-line real-time diagnosis of the abnormal state of the spare power automatic switching device in the 10 kilovolt power distribution station is realized, the rapidity and the accuracy of abnormality elimination of the on-site spare power automatic switching device are improved, and the method has important significance in improving the defect treatment efficiency of the spare power automatic switching device of the 10 kilovolt power distribution station.
Drawings
FIG. 1 is a schematic diagram of a system configuration module of the present invention;
FIG. 2 is a schematic diagram of an abnormal line loss identification module according to the present invention;
FIG. 3 is a schematic diagram of an abnormal parent-level recognition module according to the present invention;
FIG. 4 is a schematic diagram of a data correction calculation module according to the present invention;
fig. 5 is a schematic diagram of the practical automatic switching abnormal state diagnosis module.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In fig. 1, the technical scheme of the invention provides an intelligent diagnosis system for the abnormal state of the spare power automatic switching of a 10 kilovolt power distribution station, which is characterized by comprising a line loss data acquisition module, a bus data acquisition module, a data storage module, an abnormal line loss identification module, an abnormal bus level identification module, a data correction calculation module and a spare power automatic switching abnormal state diagnosis module.
The line loss data acquisition module is used for acquiring daily input electric quantity and daily output electric quantity data of a 10 kilovolt feeder line on the upper level of the power distribution station;
the bus data acquisition module is used for acquiring daily input electric quantity and daily output electric quantity data of a 10 kilovolt bus of the upper-level substation of the power distribution station;
the data storage module is communicated with the acquisition module part, the identification module and the data correction calculation module and is used for storing 10 kilovolt feeder acquisition information, 10 kilovolt bus acquisition information of the transformer substation and the topological relation of the transformer substation and the power distribution station;
the abnormal line loss identification module calculates the daily line loss of the feeder line and acquires the line with abnormal line loss in real time;
the abnormal busbar level identification module calculates the daily busbar unbalance rate and acquires the busbar with the busbar level abnormal movement and the reverse electric quantity fluctuation in real time;
the data correction calculation module recalculates line loss through a line loss correction formula and recalculates bus level through a bus correction formula for the upper bus of the power distribution station with data fluctuation;
and the automatic switching equipment abnormal state diagnosis module is used for carrying out state diagnosis of the automatic switching equipment of the power distribution station through correcting the calculation result.
As shown in fig. 2 to 5, in the line loss data acquisition module, the input electric quantity, the output electric quantity and the input-output correspondence relationship of the upper-level 10kv feeder line of the power distribution station are taken from the integrated electric quantity and line loss management system, and are data acquisition units in days.
In the bus-bar data acquisition module, the input electric quantity, the output electric quantity and the corresponding relation of input and output of a 10 kilovolt bus of a power substation upper-level substation are acquired from an electric energy acquisition system, and data acquisition units are acquired daily.
In the data storage module, the data of the 10 kilovolt feeder line electric quantity acquired by the line loss data acquisition module and the data of the 10 kilovolt bus electric quantity acquired by the bus data acquisition module are stored in an array form by taking a day as a unit; and simultaneously storing the topological relation of the transformer substation and the distribution substation taken from the GIS system in daily units.
In the abnormal line loss identification module, the daily line loss of 2 upper-level 10 kilovolt feeder lines of the power distribution station is calculated by taking the daily as a unit, and if the 2 feeder lines have the condition of abnormal movement at the same time, the abnormal movement line name is output in real time.
In the abnormal bus level identification module, the daily bus unbalance rate of the upper-level 2-section 10-kilovolt bus of the power distribution station is calculated by taking the day as a unit, and the bus name of the bus with abnormal bus level or fluctuation of the reverse electric quantity of a certain section of bus is output in real time.
In the data correction calculation module, the line loss of the 10 kilovolt feeder line on the upper level of the power distribution station with data fluctuation is recalculated through a line loss correction formula, and the bus level of the 10 kilovolt bus line on the upper level of the power distribution station with data fluctuation is recalculated through a bus correction formula.
In the automatic backup power switching abnormal state diagnosis module, the state diagnosis of the automatic backup power switching device of the power distribution station is performed through the rule comparison of the line loss correction calculation result and the rule comparison of the bus tie correction calculation result.
Examples:
taking ZJYL power distribution station as an example, performing spare power automatic switching abnormal state diagnosis: the names of upper feeder lines of the power distribution station are Y16 and D28; the name of the upper bus section is as follows: y2 (1) and D2 (2).
1. In the line loss data acquisition module, the input electric quantity output electric quantity and the input and output corresponding relation of the upper 10 kilovolt feeder Y16 and D28 of the power distribution station are taken from an integrated electric quantity and line loss management system, and are used as data acquisition units. The data collected are shown in the following arrays:
Y16：
D28：
2. in the bus-bar data acquisition module, the input electric quantity, the output electric quantity and the corresponding relation of input and output of 10 kilovolt buses Y2 (1) and D2 (2) of the upper-level substation of the power distribution station are acquired from an electric energy acquisition system, and data acquisition units are acquired daily. The data collected are shown in the following arrays:
Y2(1)：
D2(2)：
3. in the data storage module, the data of the electric quantity of the 10 kilovolt feeder Y16 and D28 acquired by the line loss data acquisition module and the data of the electric quantity of the 10 kilovolt bus Y2 (1) and D2 (2) acquired by the bus data acquisition module are stored in an array form by taking a day as a unit; and simultaneously storing the topological relation of the transformer substation and the distribution substation taken from the GIS system in daily units. The stored data are as follows:
4. in the abnormal line loss identification module, the daily line loss of 2 10 kilovolt feeder lines Y16 and D28 on the upper level of the power distribution station is calculated by taking a day as a unit, and if the 2 feeder lines have abnormal conditions at the same time, the abnormal line name is output in real time.
According to calculation, the solar line loss of the Y16 and the D28 is changed from reasonable to unreasonable at the same time on 4.17 days, so that the output Y16 and the D28 indicate that the lower grading power station ZJYL is possibly in an abnormal state, and the next diagnosis is needed.
5. In the abnormal busbar level identification module, daily busbar unbalance rates of the upper-level 2 sections of 10 kilovolt buses Y2 (1) and D2 (2) of the power distribution station are calculated by taking a day as a unit, and busbar names with abnormal busbar level or fluctuation of reverse electric quantity of a certain section of busbar are output in real time.
According to calculation, on 4.17 days, the solar level of Y2 (1) and D2 (2) is changed from reasonable to unreasonable, and larger reverse electric quantity appears on the output sides of Y2 (1) and D2 (2), so that the output Y2 (1) and D2 (2) indicate that the lower grading power station ZJYL is possibly in an abnormal state, and the next diagnosis is needed.
6. In the data correction calculation module, the line loss of the 10 kilovolt feeder line on the upper level of the power distribution station with data fluctuation is recalculated through a line loss correction formula, and the bus level of the 10 kilovolt bus line on the upper level of the power distribution station with data fluctuation is recalculated through a bus correction formula.
According to the correction calculation formula library, the corrected line loss and parent level are as follows:
after the correction formula I is calculated:
after the correction formula II is calculated:
after the correction formula III is calculated:
after the correction formula four is calculated:
7. in the automatic backup power switching abnormal state diagnosis module, the state diagnosis of the automatic backup power switching device of the power distribution station is performed through the rule comparison of the line loss correction calculation result and the rule comparison of the bus tie correction calculation result.
According to the spare power automatic switching state diagnosis library, the line losses of Y16 and D28 are within [0,6% ] after the correction of the formula III, and the normal state is recovered; after the correction of the formula IV, the mother levels of Y2 (1) and D2 (2) are within [ -1 percent and 1 percent ], and the reverse electric quantity returns to zero, so that the power distribution station is recovered to be normal and meets the condition II, and therefore, the ZJYL power distribution station is judged to be in an abnormal state of automatic backup power supply misoperation after the period of 17 days of 4 months.
By adopting the technical scheme of the invention, the distribution station with the abnormal standby power automatic switching state can be judged, and the abnormal state type can be further accurately diagnosed, so that the real-time monitoring and defect elimination of the distribution station standby power automatic switching device are realized, and the safe operation level of the distribution network site is improved. The method realizes the online real-time diagnosis of the abnormal state of the spare power automatic switching device in the 10 kilovolt power distribution station, improves the rapidity and the accuracy of the abnormality elimination of the on-site spare power automatic switching device, and has important significance for improving the defect treatment efficiency of the spare power automatic switching device of the 10 kilovolt power distribution station.
The invention can be widely used in the fields of real-time on-line diagnosis and abnormality elimination of the spare power automatic switching of the 10 kilovolt power distribution station.
Claims (8)
1. An intelligent diagnosis system for abnormal states of 10 kilovolt power distribution station spare power automatic switching, which is characterized in that:
the 10 kilovolt power distribution station spare power automatic switching abnormal state intelligent diagnosis system comprises a line loss data acquisition module, a bus data acquisition module, a data storage module, an abnormal line loss identification module, an abnormal bus level identification module, a data correction calculation module and a spare power automatic switching abnormal state diagnosis module;
the line loss data acquisition module is used for acquiring daily input electric quantity and daily output electric quantity data of a 10 kilovolt feeder line on the upper level of the power distribution station;
the bus data acquisition module is used for acquiring daily input electric quantity and daily output electric quantity data of a 10 kilovolt bus of the upper-level substation of the power distribution station;
the data storage module is communicated with the acquisition module part, the identification module and the data correction calculation module and is used for storing 10 kilovolt feeder acquisition information, 10 kilovolt bus acquisition information of the transformer substation and the topological relation of the transformer substation and the power distribution station;
the abnormal line loss identification module calculates the daily line loss of the feeder line and acquires the line with abnormal line loss in real time;
the abnormal busbar level identification module calculates the daily busbar unbalance rate and acquires the busbar with the busbar level abnormal movement and the reverse electric quantity fluctuation in real time;
the data correction calculation module recalculates line loss through a line loss correction formula and recalculates bus level through a bus correction formula for the upper bus of the power distribution station with data fluctuation;
the automatic switching equipment abnormal state diagnosis module is used for carrying out state diagnosis on the automatic switching equipment of the power distribution station through correcting the calculation result;
in the 10KV power distribution station spare power automatic switching abnormal state intelligent diagnosis system, in the abnormal line loss identification module, the daily line loss of 2 10KV feeder lines on the power distribution station is calculated by taking a daily unit;
in the abnormal bus balance identification module, calculating the daily bus unbalance rate of the upper-level 2-section 10-kilovolt bus of the power distribution station by taking the day as a unit;
in the automatic spare power automatic switching abnormal state diagnosis module, the state diagnosis of the automatic spare power automatic switching device of the power distribution station is carried out through the rule comparison of the line loss correction calculation result and the rule comparison of the bus tie correction calculation result;
the intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station can judge that the power distribution station with the abnormal state of the spare power automatic switching exists and further accurately diagnose the abnormal state type, thereby realizing the real-time monitoring and defect elimination of the spare power automatic switching device of the power distribution station and improving the safe operation level of the power distribution network site.
2. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station according to claim 1 is characterized in that in the line loss data acquisition module, the corresponding relation of the input electric quantity, the output electric quantity and the input and output of a 10 kilovolt feeder line on the power distribution station is taken from the integrated electric quantity and line loss management system, and the data are acquired as a unit.
3. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station according to claim 1 is characterized in that in the bus data acquisition module, the corresponding relation of the input electric quantity, the output electric quantity and the input and output of the 10 kilovolt bus of the power distribution station upper-level power conversion station is acquired from an electric energy acquisition system, and the data acquisition unit is daily.
4. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station according to claim 1 is characterized in that in the data storage module, 10 kilovolt feeder line electric quantity data acquired by the line loss data acquisition module and 10 kilovolt bus electric quantity data acquired by the bus data acquisition module are stored in an array mode by taking a day as a unit; and simultaneously storing the topological relation of the transformer substation and the distribution substation taken from the GIS system in daily units.
5. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station according to claim 1, wherein in the abnormal line loss identification module, if 2 feeder lines have abnormal conditions at the same time, the abnormal line name is output in real time.
6. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station according to claim 1 is characterized in that in the abnormal busbar level identification module, busbar names with abnormal busbar level or fluctuation of reverse electric quantity of a certain section of busbar are output in real time.
7. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station according to claim 1 is characterized in that in the data correction calculation module, the line loss of the 10 kilovolt feeder line on the power distribution station with data abnormality is recalculated through a line loss correction formula, and the bus level of the 10 kilovolt bus line on the power distribution station with data abnormality is recalculated through a bus line correction formula.
8. The intelligent diagnosis system for the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station is characterized by realizing real-time monitoring and defect elimination of the spare power automatic switching device of the power distribution station by judging that the power distribution station with the abnormal state of the spare power automatic switching of the 10 kilovolt power distribution station exists and further accurately diagnosing the type of the abnormal state.
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| CN202010413068.8A CN111654102B (en) | 2020-05-15 | 2020-05-15 | 10 kilovolt distribution station spare power automatic switching abnormal state intelligent diagnosis system |
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| CN202010413068.8A CN111654102B (en) | 2020-05-15 | 2020-05-15 | 10 kilovolt distribution station spare power automatic switching abnormal state intelligent diagnosis system |
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| CN111654102A CN111654102A (en) | 2020-09-11 |
| CN111654102B true CN111654102B (en) | 2024-03-29 |
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