CN113836117A - Posture characteristic database system for porcelain bushing type power equipment in earthquake - Google Patents

Posture characteristic database system for porcelain bushing type power equipment in earthquake Download PDF

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CN113836117A
CN113836117A CN202111299107.7A CN202111299107A CN113836117A CN 113836117 A CN113836117 A CN 113836117A CN 202111299107 A CN202111299107 A CN 202111299107A CN 113836117 A CN113836117 A CN 113836117A
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李�昊
王宣军
于虹
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Electric Power Research Institute of Yunnan Power Grid Co Ltd
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Abstract

The application discloses porcelain cover class electrical equipment gesture characteristic database system in earthquake includes: the device module collects various information and marks the positions of the device module and the database management module to obtain a complete database which can contain all information required by power equipment detection, and the actual problems of large information quantity and difficult query of the power equipment are effectively solved.

Description

Posture characteristic database system for porcelain bushing type power equipment in earthquake
Technical Field
The invention belongs to the technical field of data collection of data power equipment, and relates to an attitude characteristic database system of epicenter porcelain sleeve type power equipment.
Background
The transformer substation is an important node of a power system, and the damage degree of the transformer substation under the action of an earthquake and the recovery progress of the power transformation function after the earthquake have important influence on emergency rescue, resident arrangement and post-disaster reconstruction work in a disaster area.
Therefore, the state information of the power equipment in the earthquake, especially the porcelain bushing power equipment, is monitored in real time at the present stage through state data monitoring. The state information reflecting the electric power equipment in the earthquake has various contents such as three-dimensional acceleration, angular velocity, displacement and the like.
The transformer substation has more types of equipment required to be detected and has the characteristic that the equipment needs to be monitored in real time. The actual conditions of large data volume and scattered storage are caused, and a complete system is not available all the time at the present stage, so that all data can be integrated, and the query and analysis of the data at the later stage are not convenient.
Disclosure of Invention
The application provides a seismic porcelain bushing type power equipment posture characteristic database system, which aims at solving the problems of electric power information confusion, inconvenient query and the like.
The invention is realized by the following technical scheme:
a earthquake porcelain bushing type electrical equipment attitude characteristic database system comprises: the device comprises a device module, a data acquisition module, a database management module and a database module;
the device module is configured to receive an initial signal of the porcelain bushing equipment and transmit the initial signal to the data acquisition module;
the data acquisition module is configured to acquire an initial signal provided by the device module, process the initial signal into three-dimensional acceleration information, angular velocity information and displacement information and transmit the three-dimensional acceleration information, the angular velocity information and the displacement information to the database management module;
the database management module is configured to add labels to the three-dimensional acceleration information, the angular velocity information and the displacement information and transmit the labeled marking information to the database module;
the database module is configured to store the obtained marking information and provide a query port.
Further, the data acquisition module comprises a three-dimensional acceleration acquisition module, an angular velocity acquisition module, a displacement calculation module, a three-dimensional acceleration noise reduction module and an angular velocity noise reduction module;
the three-dimensional acceleration acquisition module is configured to receive the initial signal, extract a three-dimensional acceleration signal therein and transmit the three-dimensional acceleration signal to the three-dimensional acceleration noise reduction module and the displacement calculation module;
the three-dimensional acceleration noise reduction module is configured to filter the three-dimensional acceleration signal and transmit the obtained three-dimensional acceleration information to the database management module;
the displacement calculation module is configured to receive the three-dimensional acceleration signal, calculate displacement information in the three-dimensional acceleration signal and transmit the displacement information to the database management module;
the angular velocity acquisition module is configured to receive the initial signal, extract an angular velocity signal therein, and transmit the angular velocity signal to the angular velocity noise reduction module;
the angular velocity noise reduction module processes the angular velocity signals into angular velocity information through filtering and transmits the angular velocity information to the data management module.
Further, the angular velocity acquisition module comprises a gyroscope configured to acquire an angular velocity signal of the epicenter porcelain-like electrical device.
Further, the three-dimensional acceleration acquisition module comprises an accelerometer configured to acquire a three-dimensional acceleration signal of the epicenter porcelain-like electrical device.
Further, the three-dimensional acceleration noise reduction module filters the three-dimensional acceleration signal by adopting a median filtering method.
Furthermore, the angular velocity noise reduction module filters the angular velocity signal by adopting a low-pass filtering and recursive average filtering mode.
Further, the displacement calculation module is used for calculating the displacement of the objectBy the formula
Figure BDA0003337571410000021
Calculating the displacement information;
wherein t is the sampling interval, aiIs the acceleration value obtained by the ith sampling, SnNamely the displacement measured after the nth sampling.
Further, the initial information is provided by at least one of a circuit breaker, a disconnector, a current transformer, a voltage transformer and a lightning arrester.
Further, the device module includes a tag module configured to differentially label signals from different sources received by the module device.
The application provides a porcelain cover class power equipment gesture characteristic database system in earthquake has following beneficial effect:
the system can effectively integrate the information of the power equipment, and can realize the unified collection and analysis of all data through one platform, thereby effectively improving the query efficiency and the accuracy.
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In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a functional module schematic diagram of an earthquake-center porcelain bushing type electrical equipment attitude characteristic database system according to the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The transformer substation is an important node of a power system, and the damage degree of the transformer substation under the action of an earthquake and the recovery progress of the power transformation function after the earthquake have important influence on emergency rescue, resident arrangement and post-disaster reconstruction work in a disaster area.
Therefore, the state information of the power equipment in the earthquake, especially the porcelain bushing power equipment, is monitored in real time at the present stage through state data monitoring. The state information reflecting the electric power equipment in the earthquake has various contents such as three-dimensional acceleration, angular velocity, displacement and the like.
The transformer substation has more types of equipment required to be detected and has the characteristic that the equipment needs to be monitored in real time. The actual conditions of large data volume and scattered storage are caused, and a complete system is not available all the time at the present stage, so that all data can be integrated, and the query and analysis of the data at the later stage are not convenient.
Referring to fig. 1, an embodiment of an epicenter porcelain bushing type electrical equipment attitude feature database system is provided, including: the device comprises a device module, a data acquisition module, a database management module and a database module;
the device module can be connected with a circuit breaker, an isolating switch, a current transformer, a voltage transformer and a lightning arrester, receives output signals from the equipment, and transmits the output signals to the data acquisition module as initial signals.
The data acquisition module can acquire the initial signal provided by the device module and transmit three-dimensional acceleration information, angular velocity information and displacement information extracted from the initial signal to the database management module.
The database management module can add labels to the three-dimensional acceleration information, the angular velocity information and the displacement information, and transmits the labeled information to the database module, wherein the labels can be time labels and information type labels, and each obtained information data can be distinguished through the label.
The database module can classify and store the obtained marking information so as to be convenient for calling at best in the follow-up inquiry process, and meanwhile, the data block module is also provided with an inquiry port so as to be convenient for follow-up inquiry.
In another embodiment of the present invention, the data acquisition module comprises a three-dimensional acceleration acquisition module, an angular velocity acquisition module, a displacement calculation module, a three-dimensional acceleration noise reduction module, and an angular velocity noise reduction module;
the three-dimensional acceleration acquisition module is used for receiving the initial signal, extracting a three-dimensional acceleration signal from the initial signal, and transmitting the three-dimensional acceleration signal to the three-dimensional acceleration noise reduction module and the displacement calculation module. Meanwhile, the three-dimensional acceleration acquisition module also comprises an accelerometer which is used for acquiring three-dimensional acceleration signals of the porcelain bushing type electrical equipment in the earthquake.
The three-dimensional acceleration noise reduction module is used for filtering the three-dimensional acceleration signals and transmitting the obtained three-dimensional acceleration information to the database management module, and further, the three-dimensional acceleration noise reduction module can filter the three-dimensional acceleration signals by adopting a median filtering method.
The displacement calculation module is used for receiving the three-dimensional acceleration signal, calculating displacement information in the three-dimensional acceleration signal and transmitting the displacement information to the database management module, the displacement calculation module performs calculation by using the following formula,
Figure BDA0003337571410000041
namely:
Figure BDA0003337571410000042
where t is the sampling interval, aiIs the acceleration value obtained by the ith sampling, SnNamely the displacement measured after the nth sampling, and the calculation result is input into a database management module.
The angular velocity acquisition module is used for receiving the initial signal, extracting an angular velocity signal from the initial signal and transmitting the angular velocity signal to the angular velocity noise reduction module, and the angular velocity acquisition module comprises a gyroscope and is used for acquiring the angular velocity signal of the epicenter porcelain sleeve type power equipment.
The angular velocity noise reduction module processes the angular velocity signals into angular velocity information through filtering and transmits the angular velocity information to the data management module. The angular velocity noise reduction module filters the angular velocity signal by adopting a low-pass filtering and recursive average filtering mode.
Through this embodiment, can effectually realize the collection, analysis, the transmission to required information through a equipment, guarantee to extract the accuracy of information.
Taking a circuit breaker as an example, the device module receives real-time data of the circuit breaker and provides the real-time data as initial data to an angular velocity acquisition module of the three-dimensional acceleration module, the accelerometer acquires a three-dimensional acceleration signal in the initial signal and transmits the three-dimensional acceleration signal to the displacement calculation module and the three-dimensional acceleration noise reduction module through the three-dimensional acceleration acquisition module, the displacement calculation module calculates displacement by using a sampling interval and an acceleration value in the three-dimensional acceleration signal, and the three-dimensional acceleration noise reduction module performs filtering through a median filtering method. Meanwhile, the angular velocity acquisition module acquires angular velocity data in the initial signal by using a gyroscope, and obtains filtering information by low-pass filtering and recursive average filtering. The database management module marks the time and the type of the obtained information and then transmits the marked information to the database module.
In another embodiment of the present invention, the device module is further defined, and the device module can be simultaneously connected to the circuit breaker, the disconnector, the current transformer, the voltage transformer and the lightning arrester, and can receive signals of one of the devices, and can also receive signals provided by a plurality of devices, and analyze and summarize all the signals to obtain final labeled signals, and store the final labeled signals in the database module in a classified manner. In order to facilitate the classification and arrangement of the database module, the device module comprises a tag module, and can distinguish and label signals from different sources received by the module device, that is, the signal information and the equipment information are oriented toward each other, so that the accuracy of information orientation is improved.
The invention can effectively integrate the information required to be detected by all the electric power equipment, and realize the unified management of data.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims (9)

1. The utility model provides a porcelain cover class electrical equipment gesture characteristic database system in earthquake which characterized in that includes: the device comprises a device module, a data acquisition module, a database management module and a database module;
the device module is configured to receive an initial signal of the porcelain bushing equipment and transmit the initial signal to the data acquisition module;
the data acquisition module is configured to acquire an initial signal provided by the device module, process the initial signal into three-dimensional acceleration information, angular velocity information and displacement information and transmit the three-dimensional acceleration information, the angular velocity information and the displacement information to the database management module;
the database management module is configured to add labels to the three-dimensional acceleration information, the angular velocity information and the displacement information and transmit the labeled marking information to the database module;
the database module is configured to store the obtained marking information and provide a query port.
2. The earthquake center porcelain bushing type electrical equipment attitude feature database system according to claim 1, wherein the data acquisition module comprises a three-dimensional acceleration acquisition module, an angular velocity acquisition module, a displacement calculation module, a three-dimensional acceleration noise reduction module and an angular velocity noise reduction module;
the three-dimensional acceleration acquisition module is configured to receive the initial signal, extract a three-dimensional acceleration signal therein and transmit the three-dimensional acceleration signal to the three-dimensional acceleration noise reduction module and the displacement calculation module;
the three-dimensional acceleration noise reduction module is configured to filter the three-dimensional acceleration signal and transmit the obtained three-dimensional acceleration information to the database management module;
the displacement calculation module is configured to receive the three-dimensional acceleration signal, calculate displacement information in the three-dimensional acceleration signal and transmit the displacement information to the database management module;
the angular velocity acquisition module is configured to receive the initial signal, extract an angular velocity signal therein, and transmit the angular velocity signal to the angular velocity noise reduction module;
the angular velocity noise reduction module processes the angular velocity signals into angular velocity information through filtering and transmits the angular velocity information to the data management module.
3. The epicenter-bushing-like electrical equipment attitude feature database system according to claim 2, wherein the angular velocity acquisition module comprises a gyroscope configured to acquire an angular velocity signal of the epicenter-bushing-like electrical equipment.
4. The epicenter porcelain bushing type electrical equipment attitude feature database system according to claim 2, wherein the three-dimensional acceleration acquisition module comprises an accelerometer configured to acquire a three-dimensional acceleration signal of the epicenter porcelain bushing type electrical equipment.
5. The earthquake center porcelain bushing type electrical equipment attitude feature database system according to claim 2, wherein the three-dimensional acceleration noise reduction module is used for filtering a three-dimensional acceleration signal by adopting a median filtering method.
6. The attitude feature database system for the epicenter porcelain bushing type electric power equipment according to claim 2, wherein the angular velocity noise reduction module is used for filtering the angular velocity signal in a low-pass filtering mode and a recursive average filtering mode.
7. The earthquake center porcelain bushing type electrical equipment attitude feature database system as claimed in claim 2, wherein the displacement calculation module utilizes a formula
Figure FDA0003337571400000011
Calculating the displacement information;
wherein t is the sampling interval, aiIs the acceleration value obtained by the ith sampling, SnNamely the displacement measured after the nth sampling.
8. The epicenter porcelain bushing type electrical equipment attitude feature database system according to claim 1, wherein the initial information is provided by at least one of a circuit breaker, a disconnector, a current transformer, a voltage transformer and a lightning arrester.
9. The epicenter porcelain bushing type electrical equipment attitude feature database system according to claim 1, wherein the device module comprises a tag module configured to differentially label signals from different sources received by the module device.
CN202111299107.7A 2021-11-04 2021-11-04 Posture characteristic database system for porcelain bushing type power equipment in earthquake Pending CN113836117A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267527A (en) * 2013-06-08 2013-08-28 重庆绿色智能技术研究院 System and method for realizing tower stability monitoring and early-warning
CN109061722A (en) * 2018-07-11 2018-12-21 云南电网有限责任公司电力科学研究院 A kind of substation's Seismic Evaluation system and method
KR102092185B1 (en) * 2019-10-07 2020-05-26 팩트얼라이언스 주식회사 Platform for analyzing electric motor health and analysis method using the same
CN113156490A (en) * 2021-03-31 2021-07-23 中国电力科学研究院有限公司 Transformer substation earthquake monitor and earthquake monitoring method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103267527A (en) * 2013-06-08 2013-08-28 重庆绿色智能技术研究院 System and method for realizing tower stability monitoring and early-warning
CN109061722A (en) * 2018-07-11 2018-12-21 云南电网有限责任公司电力科学研究院 A kind of substation's Seismic Evaluation system and method
KR102092185B1 (en) * 2019-10-07 2020-05-26 팩트얼라이언스 주식회사 Platform for analyzing electric motor health and analysis method using the same
CN113156490A (en) * 2021-03-31 2021-07-23 中国电力科学研究院有限公司 Transformer substation earthquake monitor and earthquake monitoring method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杰罗拉提;梁勇;: "浅析桥梁健康监测系统在高速公路桥梁管理中的应用", 西南公路 *

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Application publication date: 20211224