CN110569989A - Power grid metering fault real-time diagnosis and early warning method based on typical fault pool - Google Patents
Power grid metering fault real-time diagnosis and early warning method based on typical fault pool Download PDFInfo
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 30
- 230000001052 transient effect Effects 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a power grid metering fault real-time diagnosis and early warning method based on a typical fault pool, which comprises the following steps: A. establishing an instantaneous fault database and an interval time period fault database; B. collecting power grid metering fault information; C. comparing the collected single power grid metering fault information with an instantaneous fault database to obtain an instantaneous fault processing flow; D. and C, arranging and combining the single power grid metering fault information compared in the step C according to a time sequence to obtain interval period fault information, and comparing the interval period fault information with an interval period fault database to obtain an interval period fault processing flow. The invention can improve the defects of the prior art, realize the rapid and automatic diagnosis of the operation fault of the power grid and improve the fault identification efficiency.
Description
Technical Field
The invention relates to the technical field of power grid fault diagnosis, in particular to a power grid metering fault real-time diagnosis and early warning method based on a typical fault pool.
Background
the fault identification is to judge the working condition of the equipment, analyze the fault cause and predict the disadvantage trend by detecting, analyzing and processing the running information of the equipment so as to improve the efficiency and the running reliability of the equipment. At present, the fault of the metering device of the power grid enterprise is found by means of manual modes such as field verification of operation and maintenance personnel and customer repair reporting, the real-time monitoring effect is poor, the manual workload is large, and the monitoring and identifying modes are passive.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a power grid metering fault real-time diagnosis and early warning method based on a typical fault pool, which can solve the defects of the prior art, realize the rapid and automatic diagnosis of the power grid operation fault and improve the fault identification efficiency.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
a power grid metering fault real-time diagnosis and early warning method based on a typical fault pool comprises the following steps:
A. Establishing an instantaneous fault database and an interval time period fault database; the instantaneous fault database comprises instantaneous fault information and an instantaneous fault processing flow corresponding to the instantaneous fault information, and the interval period fault database comprises interval period fault information and an interval period fault processing flow corresponding to the interval period fault information;
B. collecting power grid metering fault information;
C. Comparing the collected single power grid metering fault information with an instantaneous fault database to obtain an instantaneous fault processing flow;
D. and C, arranging and combining the single power grid metering fault information compared in the step C according to a time sequence to obtain interval period fault information, and comparing the interval period fault information with an interval period fault database to obtain an interval period fault processing flow.
Preferably, in the step a, the types of the instantaneous fault information include a voltage fault, a current fault, a power fault, a clock fault, a power fault and a phase angle fault; types of the inter-period fault information include a voltage fault, a current fault, and a power fault.
Preferably, in step a, transient fault database entries having the same transient fault processing flow and different transient fault information are associated with each other, and transient fault database entries having the same transient fault processing flow and interval period fault processing flow and the same transient fault information type and interval period fault information type are associated with each other.
Preferably, in the step B, different power supply units and distribution areas are set as different acquisition units, and each acquisition unit acquires the power grid metering fault information independently.
Preferably, in step C, after a transient fault handling process is obtained, other transient fault database entries related to the transient fault handling process are marked; and shielding the marked transient fault database entries within a set time period, and not participating in comparison.
Preferably, in step D, the weight of the composition of the single grid metering fault information in the screened instantaneous fault database entry is increased, the weight coefficient is in direct proportion to the screening frequency, and when comparing the interval period fault database, the interval period fault database entry associated with the instantaneous fault database entry successfully compared in step C is preferentially compared.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: according to the invention, by establishing the instantaneous database and the interval time period database, in the comparison process of the fault information, through the combination of the instantaneous comparison mode and the interval time period comparison mode, the timely processing of the sudden fault is ensured, and the accurate diagnosis of the systematic fault in the whole power grid can be realized. In the process of comparing the fault information, the repeated operation process of the system can be effectively reduced and the operation amount is reduced through the correlation of different fault information, so that the speed of fault diagnosis is increased.
drawings
FIG. 1 is a flow chart of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, one embodiment of the present invention includes the steps of:
A. Establishing an instantaneous fault database and an interval time period fault database; the instantaneous fault database comprises instantaneous fault information and an instantaneous fault processing flow corresponding to the instantaneous fault information, and the interval period fault database comprises interval period fault information and an interval period fault processing flow corresponding to the interval period fault information;
B. Collecting power grid metering fault information;
C. Comparing the collected single power grid metering fault information with an instantaneous fault database to obtain an instantaneous fault processing flow;
D. And C, arranging and combining the single power grid metering fault information compared in the step C according to a time sequence to obtain interval period fault information, and comparing the interval period fault information with an interval period fault database to obtain an interval period fault processing flow.
In the step A, the types of instantaneous fault information comprise voltage faults, current faults, electric quantity faults, clock faults, power faults and phase angle faults; types of the inter-period fault information include a voltage fault, a current fault, and a power fault.
In the step A, instantaneous fault database entries which have the same instantaneous fault processing flow and different instantaneous fault information are associated, and instantaneous fault database entries which have the same instantaneous fault processing flow and interval period fault processing flow and the same instantaneous fault information type and interval period fault information type are associated with interval period fault database entries.
And in the step B, different power supply units and transformer areas are set as different acquisition units, and each acquisition unit independently acquires the power grid metering fault information.
In step C, after an instantaneous fault processing flow is obtained, other associated instantaneous fault database entries are marked; and shielding the marked transient fault database entries within a set time period, and not participating in comparison.
and step D, increasing the weight of the single power grid metering fault information in the screened instantaneous fault database entries, wherein the weight coefficient is in direct proportion to the screening times, and when comparing the interval period fault database, preferentially comparing the interval period fault database entries associated with the instantaneous fault database entries successfully compared in the step C.
And D, after the interval time period fault processing flow is obtained in the step D, correcting the interval time period fault processing flow according to the actual state of the power grid system after the processing flow is executed, updating the corresponding single power grid metering fault information combination according to the correction result, and updating the instantaneous fault database according to the updating result so as to improve the accuracy of the comparison result of the instantaneous fault database.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A power grid metering fault real-time diagnosis and early warning method based on a typical fault pool is characterized by comprising the following steps:
A. establishing an instantaneous fault database and an interval time period fault database; the instantaneous fault database comprises instantaneous fault information and an instantaneous fault processing flow corresponding to the instantaneous fault information, and the interval period fault database comprises interval period fault information and an interval period fault processing flow corresponding to the interval period fault information;
B. Collecting power grid metering fault information;
C. comparing the collected single power grid metering fault information with an instantaneous fault database to obtain an instantaneous fault processing flow;
D. and C, arranging and combining the single power grid metering fault information compared in the step C according to a time sequence to obtain interval period fault information, and comparing the interval period fault information with an interval period fault database to obtain an interval period fault processing flow.
2. The power grid metering fault real-time diagnosis and early warning method based on the typical fault pool as claimed in claim 1, wherein: in the step A, the types of instantaneous fault information comprise voltage faults, current faults, electric quantity faults, clock faults, power faults and phase angle faults; types of the inter-period fault information include a voltage fault, a current fault, and a power fault.
3. the power grid metering fault real-time diagnosis and early warning method based on the typical fault pool as claimed in claim 2, characterized in that: in the step A, instantaneous fault database entries which have the same instantaneous fault processing flow and different instantaneous fault information are associated, and instantaneous fault database entries which have the same instantaneous fault processing flow and interval period fault processing flow and the same instantaneous fault information type and interval period fault information type are associated with interval period fault database entries.
4. The power grid metering fault real-time diagnosis and early warning method based on the typical fault pool as claimed in claim 1, wherein: and in the step B, different power supply units and transformer areas are set as different acquisition units, and each acquisition unit independently acquires the power grid metering fault information.
5. The power grid metering fault real-time diagnosis and early warning method based on the typical fault pool as claimed in claim 3, wherein: in step C, after an instantaneous fault processing flow is obtained, other associated instantaneous fault database entries are marked; and shielding the marked transient fault database entries within a set time period, and not participating in comparison.
6. The power grid metering fault real-time diagnosis and early warning method based on the typical fault pool as claimed in claim 5, wherein: and step D, increasing the weight of the single power grid metering fault information in the screened instantaneous fault database entries, wherein the weight coefficient is in direct proportion to the screening times, and when comparing the interval period fault database, preferentially comparing the interval period fault database entries associated with the instantaneous fault database entries successfully compared in the step C.
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Citations (6)
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| CN101989766A (en) * | 2009-08-03 | 2011-03-23 | 南京南瑞继保电气有限公司 | Method for diagnosing faults of power system on the basis of protecting action chain |
| CN102497024A (en) * | 2011-12-16 | 2012-06-13 | 广东电网公司茂名供电局 | Intelligent warning system based on integer programming |
| CN102707199A (en) * | 2012-06-29 | 2012-10-03 | 广东电网公司佛山供电局 | Intelligent diagnosis method and system of dispatching warning message of power grid |
| CN104252401A (en) * | 2014-08-29 | 2014-12-31 | 北京阅联信息技术有限公司 | Weight based device status judgment method and system thereof |
| CN106446938A (en) * | 2016-09-13 | 2017-02-22 | 内江市旭日环境科技有限公司 | Forward-looking self-diagnosing method and system for belt conveyor |
-
2019
- 2019-07-29 CN CN201910691085.5A patent/CN110569989A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689000A (en) * | 2002-08-26 | 2005-10-26 | 霍尼韦尔国际公司 | Relational database for maintenance information for complex systems |
| CN101989766A (en) * | 2009-08-03 | 2011-03-23 | 南京南瑞继保电气有限公司 | Method for diagnosing faults of power system on the basis of protecting action chain |
| CN102497024A (en) * | 2011-12-16 | 2012-06-13 | 广东电网公司茂名供电局 | Intelligent warning system based on integer programming |
| CN102707199A (en) * | 2012-06-29 | 2012-10-03 | 广东电网公司佛山供电局 | Intelligent diagnosis method and system of dispatching warning message of power grid |
| CN104252401A (en) * | 2014-08-29 | 2014-12-31 | 北京阅联信息技术有限公司 | Weight based device status judgment method and system thereof |
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Application publication date: 20191213 |