CN114421617A - Medium-voltage fault research and judgment method based on distribution network operation monitoring data - Google Patents
Medium-voltage fault research and judgment method based on distribution network operation monitoring data Download PDFInfo
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- CN114421617A CN114421617A CN202210018710.1A CN202210018710A CN114421617A CN 114421617 A CN114421617 A CN 114421617A CN 202210018710 A CN202210018710 A CN 202210018710A CN 114421617 A CN114421617 A CN 114421617A
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2291—User-Defined Types; Storage management thereof
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/16—Regulation of the charging current or voltage by variation of field
- H02J7/26—Regulation of the charging current or voltage by variation of field using magnetic devices with controllable degree of saturation
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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
- 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 provides a medium-voltage fault studying and judging method based on distribution network operation monitoring data. The medium-voltage fault studying and judging method based on the distribution network operation monitoring data comprises the following steps: (4) acquiring a power distribution substation power restoration stopping signal and a power distribution automation master station power restoration stopping signal, caching the signals into a memory queue for preprocessing, screening the same power distribution substation, reserving a record with the earliest power failure time and a record with the latest power restoration time, sequencing the records, and generating a power distribution substation power restoration stopping information record before power restoration when power failure occurs; (5) judging whether the power failure is the power restoration state according to the information data, and if the power failure is the power failure, continuously executing the fault research and judgment step. The medium-voltage fault studying and judging method based on the distribution network operation monitoring data can realize quasi-real-time medium-voltage fault studying and judging, so that the medium-voltage fault studying and judging accuracy is improved, the medium-voltage fault studying and judging method can support rush repair and migration, and the power supply service level is improved.
Description
Technical Field
The invention belongs to the technical field of medium-voltage fault studying and judging methods of distribution network operation monitoring data, and particularly relates to a medium-voltage fault studying and judging method based on distribution network operation monitoring data.
Background
Along with the development of the scientific and technological society, the scale of a power grid is continuously enlarged, the structure of the power grid is more complex, power consumers such as residents, enterprises and the like pay more attention to the power supply reliability, the medium-voltage fault rush-repair of a distribution network is an important link for guaranteeing the safe operation of a power system, the power supply reliability is also an important support for improving the power supply reliability and optimizing the environment of operators, the medium-voltage fault research and judgment accuracy and real-time performance are improved, and the sensing capability and the response speed of a team group to the faults of the distribution network can be enabled; the method comprises the following steps of constructing a medium-voltage fault studying and judging model, supporting rush repair and forward movement, and improving the power supply service level, and in the related technology, discloses a distribution network typical fault studying and judging method based on operation data, which comprises the following steps: s01: collecting and extracting required data; s02: analyzing the obtained data by using a missing value and an abnormal value, and preprocessing the data; s03: carrying out modeling classification by utilizing the preprocessed data; s04: matching the modeling classification result with a fault classification standard to form a fault database; s05: and judging the new data according to the fault database to make prediction. Through the multilayer processing to data, and then through the judgement to the database, make the prediction, help in time getting rid of the trouble, reduce possible loss, improve the benefit, the substantive effect includes: the efficiency and the speed of solving the distribution network fault are improved, and the continuity and the reliability of power supply are ensured; accurate processing and quick isolation are achieved, and the fault handling efficiency is improved, so that emergency repair work is guided; the operation and maintenance work is guided by taking the actions ahead of time without rain and silk.
However, still have the weak point in the above-mentioned structure, especially when salvageing to the middling pressure trouble, most cities power supply companies rely on and salvage commander's experience judgement to the power failure incident and take a large amount of time to denucleate other professional system data and rely on the on-the-spot inspection of salvage personnel to judge the fault point authenticity, salvage personnel also can be because the fault study and judge inaccurate personnel that leads to rush over the work because of the trouble, salvage work efficiency is low, salvage strength utilization ratio is low, salvage cost is high.
Therefore, there is a need to provide a new method for studying and judging medium voltage fault based on distribution network operation monitoring data to solve the above technical problems
Disclosure of Invention
The invention solves the technical problem of providing a medium-voltage fault studying and judging method based on distribution network operation monitoring data, which realizes quasi-real-time medium-voltage fault studying and judging through second-level pushed distribution network monitoring data, improves the medium-voltage fault studying and judging accuracy through mutual verification of multi-channel data, supports rush repair migration through a medium-voltage fault studying and judging result with high accuracy and high real-time performance, and improves the power supply service level.
In order to solve the technical problem, the medium-voltage fault studying and judging method based on the distribution network operation monitoring data provided by the invention comprises the following steps:
(1) receiving a fault report list of a power consumer through writing, a network or a telephone, locking the power consumer according to information data of a power grid, acquiring FA line fault data of a distribution automation master station, performing duplication elimination and kneading to form line fault data, and inquiring a power failure plan information interface of a production analysis system according to a line ID;
(2) analyzing the data of the locked power consumer, and checking whether the reason is the planned line power failure or the arrearage power failure;
(3) if yes, the judging result is the planned power failure of the line, if not, the judging result is the line fault, and a line fault record is stored;
(4) acquiring a power distribution substation power restoration stopping signal and a power distribution automation master station power restoration stopping signal, caching the signals into a memory queue for preprocessing, screening the same power distribution substation, reserving a record with the earliest power failure time and a record with the latest power restoration time, sequencing the records, and generating a power distribution substation power restoration stopping information record before power restoration when power failure occurs;
(5) judging whether the power failure and recovery state is the power failure and recovery state according to the information data, if the power failure and recovery state is the power failure, continuing to execute the fault studying and judging step, if the power recovery state is the power recovery state, preferentially inquiring whether the power distribution transformer power failure and recovery information has records, if the power failure and recovery information has records, updating the corresponding power recovery time, and finishing the fault studying and judging.
As a further aspect of the present invention, according to the above (5), the ID of the line to which the distribution transformer belongs is obtained first, the power outage plan data interface is queried, and it is determined whether the line plan power outage occurs, if so, the result of the study and determination is the line plan power outage, and if not, the fault study and determination step is continuously executed.
As a further scheme of the invention, the distribution transformer ID is obtained first, and the power failure plan data interface is queried, so as to determine whether the power failure is the distribution transformer plan power failure, if so, the result of the study is the power failure of a single distribution transformer plan, and if not, the fault study and determination step is continuously executed.
As a further aspect of the present invention, the method queries a line fault record according to the line ID to which the distribution transformer belongs to determine whether the line fault is a known line fault, if so, the result of the study is the line fault, and if not, the fault study and determination step is continuously executed.
As a further scheme of the invention, whether the same distribution transformer fault exists in nearly 15 minutes is inquired according to the distribution transformer ID, if not, the judgment result is the distribution transformer fault, and a distribution transformer fault record is generated.
As a further scheme of the invention, whether the same distribution transformer fault exists in nearly 15 minutes is inquired according to the distribution transformer ID, if so, the distribution transformer power-off and power-restoration information record is updated, if the power-restoration time exists, a new distribution transformer power-off and power-restoration record is added, if the power-restoration time does not exist, whether the power-off time is earlier or not is judged, if so, the updating is carried out, and otherwise, the processing is not carried out.
As a further aspect of the present invention, according to the above, if the power distribution is due to outage, the distribution transformer upstream of the power consumer is first acquired according to the grid topology relationship, and the power distribution transformer is determined whether the power distribution transformer is within the known power outage range in combination with the power outage report information, and if so, the power outage type is determined as a non-fault power outage such as planned power outage, temporary power outage, and power over-supply and over-limit, or a fault power outage according to the power outage report information, and if the power distribution transformer is a fault power outage, whether the fault is associated with an in-transit order is determined, and if the power distribution transformer is an in-transit order, the work orders are merged.
As a further aspect of the present invention, if the power distribution substation is not in owing power failure, the gateway table of the power distribution substation is summoned to determine whether the power distribution substation is electrified, and if the power distribution substation is out of power, the trunk line and the branch line at the upstream of the power distribution substation are acquired according to the power grid topological relation.
As a further aspect of the present invention, if not, the range is narrowed to the power consumer for study and judgment.
Compared with the related art, the medium-voltage fault studying and judging method based on the distribution network operation monitoring data has the following beneficial effects:
the distribution network monitoring data pushed in second level is used for realizing quasi-real-time medium voltage fault study and judgment, the multi-channel data are mutually verified, the medium voltage fault study and judgment accuracy is improved, and finally, the rush repair migration is supported and the power supply service level is improved through the medium voltage fault study and judgment result with high accuracy and high real-time performance.
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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 schematic diagram of a medium voltage fault investigation and judgment process according to the present invention.
Detailed Description
Please refer to fig. 1, wherein fig. 1 is a schematic diagram illustrating a medium voltage fault investigation and determination process according to the present invention. The medium-voltage fault studying and judging method based on the distribution network operation monitoring data comprises the following steps:
(1) receiving a fault report list of a power consumer through writing, a network or a telephone, locking the power consumer according to information data of a power grid, acquiring FA line fault data of a distribution automation master station, performing duplication elimination and kneading to form line fault data, and inquiring a power failure plan information interface of a production analysis system according to a line ID;
(2) analyzing the data of the locked power consumer, and checking whether the reason is the planned line power failure or the arrearage power failure;
(3) if yes, the judging result is the planned power failure of the line, if not, the judging result is the line fault, and a line fault record is stored;
(4) acquiring a power distribution substation power restoration stopping signal and a power distribution automation master station power restoration stopping signal, caching the signals into a memory queue for preprocessing, screening the same power distribution substation, reserving a record with the earliest power failure time and a record with the latest power restoration time, sequencing the records, and generating a power distribution substation power restoration stopping information record before power restoration when power failure occurs;
(5) judging whether the power failure and recovery state is the power failure and recovery state according to the information data, if the power failure and recovery state is the power failure, continuing to execute the fault studying and judging step, if the power recovery state is the power recovery state, preferentially inquiring whether the power distribution transformer power failure and recovery information has records, if the power failure and recovery information has records, updating the corresponding power recovery time, and finishing the fault studying and judging.
According to the above (5), the ID of the line to which the distribution transformer belongs is obtained, the power failure plan data interface is queried, and whether the power failure is planned for the line is judged, if so, the judgment result is the planned power failure for the line, and if not, the fault judgment step is continuously executed.
Firstly, acquiring a distribution transformer ID, and inquiring a power failure plan data interface to judge whether the power failure of the distribution transformer plan is present, if so, judging that the power failure of a single distribution transformer plan is present, and if not, continuously executing a fault research and judgment step.
And inquiring a line fault record according to the ID of the line to which the distribution transformer belongs to judge whether the line fault is a known line fault, if so, judging that the result is the line fault, and if not, continuing to execute the fault judging step.
And inquiring whether the same distribution transformer fault exists in nearly 15 minutes according to the distribution transformer ID, if not, judging that the result is the distribution transformer fault, and generating a distribution transformer fault record.
And inquiring whether the same distribution transformer fault exists in nearly 15 minutes according to the distribution transformer ID, if so, updating the distribution transformer power-off and power-restoration information record, if so, adding a new distribution transformer power-off and power-restoration record, if not, judging whether the power failure time is earlier, updating the power failure time earlier, and otherwise, not processing the power failure time.
According to the above, if the power failure is due to the arrearage power failure, the distribution transformer at the upstream of the power consumer is firstly obtained according to the topological relation of the power grid, and the power failure report information is combined to judge whether the distribution transformer is in the known power failure range, if so, the power failure type is non-fault power failure such as planned power failure, temporary power failure, power over-supply and limit, and the like, or fault power failure, if the power failure is fault power failure, whether the fault is associated on-the-road work order is researched, and if the on-the-road work order exists, the work order is merged.
And if the distribution transformer is not in arrearage and power failure, calling a gateway table of the distribution transformer to judge whether the distribution transformer is electrified, and if the distribution transformer is in power failure, acquiring a trunk line and a branch line at the upstream of the distribution transformer according to a power grid topological relation.
If not, the range is narrowed to the power consumer for research and judgment.
The working principle of the medium-voltage fault studying and judging method based on the distribution network operation monitoring data provided by the invention is as follows:
the method comprises the steps that a medium-voltage fault studying and judging model is used for studying and judging line faults and single distribution transformer faults, wherein line fault data of a power distribution automation main station FA are obtained, duplication elimination kneading is carried out, and the line fault data are generated according to whether plan power failure information is correlated or not;
acquiring a power distribution substation power failure and restoration signal and a power distribution automation master station power failure and restoration signal for data preprocessing, screening the same power distribution substation, and reserving a record with the earliest power failure time and a record with the latest power restoration time; and sequencing, namely generating a distribution transformer power-off and power-restoration information record before power restoration in case of power failure. And judging whether the single distribution transformer fault is a single distribution transformer fault or not by judging whether the power failure state data in the distribution transformer power failure and power restoration information is related to the planned power failure or not, and judging whether the power failure information record of the distribution transformer is newly added or the power failure time of the distribution transformer is updated by utilizing the power failure state data in the power distribution transformer power failure and power restoration information.
Compared with the related art, the medium-voltage fault studying and judging method based on the distribution network operation monitoring data has the following beneficial effects:
the distribution network monitoring data pushed in second level is used for realizing quasi-real-time medium voltage fault study and judgment, the multi-channel data are mutually verified, the medium voltage fault study and judgment accuracy is improved, and finally, the rush repair migration is supported and the power supply service level is improved through the medium voltage fault study and judgment result with high accuracy and high real-time performance.
Claims (9)
1. A medium-voltage fault studying and judging method based on distribution network operation monitoring data is characterized by comprising the following steps:
(1) receiving a fault report list of a power consumer through writing, a network or a telephone, locking the power consumer according to information data of a power grid, acquiring FA line fault data of a distribution automation master station, performing duplication elimination and kneading to form line fault data, and inquiring a power failure plan information interface of a production analysis system according to a line ID;
(2) analyzing the data of the locked power consumer, and checking whether the reason is the planned line power failure or the arrearage power failure;
(3) if yes, the judging result is the planned power failure of the line, if not, the judging result is the line fault, and a line fault record is stored;
(4) acquiring a power distribution substation power restoration stopping signal and a power distribution automation master station power restoration stopping signal, caching the signals into a memory queue for preprocessing, screening the same power distribution substation, reserving a record with the earliest power failure time and a record with the latest power restoration time, sequencing the records, and generating a power distribution substation power restoration stopping information record before power restoration when power failure occurs;
(5) judging whether the power failure and recovery state is the power failure and recovery state according to the information data, if the power failure and recovery state is the power failure, continuing to execute the fault studying and judging step, if the power recovery state is the power recovery state, preferentially inquiring whether the power distribution transformer power failure and recovery information has records, if the power failure and recovery information has records, updating the corresponding power recovery time, and finishing the fault studying and judging.
2. The method for studying and judging medium-voltage faults based on distribution network operation monitoring data according to claim 1, wherein according to the step (5), the ID of the line to which the distribution transformer belongs is obtained first, a power failure plan data interface is inquired, whether the power failure is planned or not is judged, if so, the studying and judging result is the power failure of the line plan, and if not, the fault studying and judging step is continuously executed.
3. The medium-voltage fault studying and judging method based on the distribution network operation monitoring data as claimed in claim 1, wherein the distribution transformer ID is obtained first, and the power failure plan data interface is inquired, so as to judge whether the power failure of the distribution transformer plan is caused, if so, the studying and judging result is that a single distribution transformer plan has power failure, and if not, the fault studying and judging step is continuously executed.
4. The method for studying and judging medium-voltage faults based on distribution network operation monitoring data according to claim 2, wherein the line fault records are inquired according to the line ID of the distribution transformer to judge whether the line fault is a known line fault, if so, the studying and judging result is the line fault, and if not, the fault studying and judging step is continuously executed.
5. The medium-voltage fault studying and judging method based on the distribution network operation monitoring data as claimed in claim 3, characterized in that whether the same distribution transformer fault exists in about 15 minutes is inquired according to the distribution transformer ID, if not, the studying and judging result is the distribution transformer fault, and a distribution transformer fault record is generated.
6. The method for studying and judging medium-voltage faults based on distribution network operation monitoring data as claimed in claim 3, wherein the method queries whether the same distribution transformer fault exists within about 15 minutes according to the distribution transformer ID, if so, updates the distribution transformer power-off and power-off information record, if the power-off and power-off time exists, adds a new distribution transformer power-off and power-off record, if the power-off and power-off time does not exist, judges whether the power-off time is earlier, updates the power-off and power-off time earlier, and otherwise, does not process the power-off and power-off time.
7. The method as claimed in claim 1, wherein if the power distribution network operation monitoring data indicates a power outage due to a loss, the distribution transformer at the upstream of the power consumer is obtained according to the topology relationship of the power grid, and the power outage reporting information is combined to determine whether the distribution transformer is within a known power outage range, if so, the power outage reporting information is used to determine whether the power outage type is a non-fault power outage such as planned power outage, temporary power outage, and power over-supply limit, or a fault power outage, if so, the power outage type is determined to be a fault, and if so, the power outage type is determined to be a related on-road work order, and if so, the work orders are combined.
8. The method for studying and judging the medium-voltage fault based on the distribution network operation monitoring data as claimed in claim 7, wherein if the power failure is not due, the gateway table of the distribution transformer is summoned and tested to judge whether the distribution transformer is electrified, and if the power failure is caused, the trunk line and the branch line at the upstream of the distribution transformer are obtained according to the power grid topological relation.
9. The method according to claim 8, wherein if not, the range is narrowed to the power consumer for evaluation.
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| CN115065047A (en) * | 2022-05-16 | 2022-09-16 | 中国南方电网有限责任公司 | Power distribution fault processing method and device based on continuous step-by-step power failure simulation |
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| CN115065047A (en) * | 2022-05-16 | 2022-09-16 | 中国南方电网有限责任公司 | Power distribution fault processing method and device based on continuous step-by-step power failure simulation |
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