CN115453289A - Partial discharge monitoring and early warning system of distribution automation switch - Google Patents
Partial discharge monitoring and early warning system of distribution automation switch Download PDFInfo
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- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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Abstract
The invention discloses a partial discharge monitoring and early warning system of a power distribution automatic switch, which relates to the technical field of on-line monitoring of the power distribution automatic switch and comprises a monitoring device, a communication terminal, a server and a sound-sensitive sensor, wherein the monitoring device is in communication connection with the communication terminal; the sound-sensitive sensor is used for acquiring running sound information of the distribution automation switch; the sound-sensitive sensor is connected with the input end of the monitoring device; the monitoring device is used for storing and digitally processing the running sound information of the distribution automation switch acquired by the sound-sensitive sensor and sending the processed data to the server. The monitoring device in the system stores the operation sound of the distribution automation switch firstly, analyzes and compares the operation sound, and has lower requirement on the operation speed of the on-site monitoring device.
Description
Technical Field
The invention relates to the technical field of on-line monitoring of a distribution automation switch, in particular to a partial discharge monitoring and early warning system of the distribution automation switch.
Background
For satisfying city resident's power consumption stability's demand, applied a large amount of distribution automation switches on the distribution lines to realize distribution lines control and automation function, and laid the bottom foundation for the circuit self-healing. However, as the service life increases, the equipment ages and the external environment interferes, the distribution automation switch is very easy to generate partial discharge phenomena of different degrees caused by latent insulation defects in long-term operation, and the insulation degradation and even breakdown or flashover accidents are caused by the long-term discharge of the switch. The main reason for causing the fault of the distribution automation switch body is that the defect is enlarged, and finally the fault or even the explosion is caused because the partial discharge caused by aging is not found and eliminated in time. The most effective means for monitoring the aging of the distribution automation switch device is partial discharge detection. Because the partial discharge phenomenon has the characteristics of short discharge time and difficulty in capturing partial discharge information in the early stage, the prior art comprises two detection means of an off-line partial discharge detector and an on-line detection device, the on-line monitoring device carries out real-time on-line monitoring, the quantity of transmitted information is large, the on-site classification processing of the partial discharge information is not realized, the short-time partial discharge information is easily subjected to report missing or not report, the off-line partial discharge detector needs human participation in the detection process, the automatic detection, processing and data uploading cannot be realized, and the automation degree is low. Therefore, in order to overcome the defect that the early partial discharge phenomenon of the distribution automation switch is not easy to monitor in the prior art, a monitoring system capable of realizing the partial discharge monitoring and early warning of the distribution automation switch needs to be designed urgently.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects in the prior art are overcome, and the power distribution automation switch partial discharge monitoring and early warning system is provided to overcome the defects that real-time monitoring and early warning cannot be realized in the prior art.
In order to solve the problems, the invention adopts the technical scheme that:
a monitoring and early warning system for partial discharge of a distribution automation switch comprises a monitoring device, a communication terminal, a server and a sound-sensitive sensor, wherein the monitoring device is in communication connection with the communication terminal, the communication terminal is in communication connection with the server, and a partial discharge early warning model runs on the server; the sound-sensitive sensor is used for acquiring running sound information of the distribution automation switch; the sound-sensitive sensor is connected with the input end of the monitoring device; the monitoring device is used for storing and digitally processing the sound information of the operation of the distribution automation switch acquired by the sound-sensitive sensor and sending the processed data to the server.
Furthermore, the monitoring device comprises a single chip microcomputer unit, a filtering unit, a memory unit, a clock control unit, an identification comparison unit, an analog-to-digital conversion unit, a communication module unit, an indicator light module unit and a key module unit; the single chip microcomputer unit is a processing control center of the monitoring device; the filtering unit is used for carrying out low-frequency filtering processing on partial discharge information acquired by the acoustic sensor and amplifying high-frequency signals; the memory unit is used for storing partial discharge information acquired by the acoustic sensor; the identification comparison unit is used for identifying and judging whether a high-frequency signal is generated or not; the indicator light module unit is used for outputting the running state information of the monitoring device; and the key module unit is used for controlling, debugging and monitoring the device on site.
Further, the single chip microcomputer unit is an ARM series single chip microcomputer.
Further, the recognition and comparison unit comprises a sound wave model unit, a sound wave feature matching unit and a recognition result output unit, wherein the sound wave model unit is used for training an operation sound model and generating an operation sound model library, and the sound wave feature matching unit is used for comparing and matching the acquired operation sound information of the distribution automation switch with the operation sound model library; and the recognition result output unit is used for judging whether the partial discharge phenomenon occurs or not according to the matching result of the acoustic wave characteristic matching unit and outputting the result.
Furthermore, the communication terminal is an FTU terminal with a forwarding function or a wireless communication module, and the monitoring device communicates with the communication terminal via a serial port or 485 or RJ45 interface.
Furthermore, the wireless communication module is a 4G wireless module, a 5G wireless module or an Internet of things wireless module.
Furthermore, the sound-sensitive sensor is an ultrasonic sound-sensitive sensor.
Further, the server comprises an early warning module, an address identification module, a display and release module and a database unit module; the early warning module is used for providing warning information; the address identification module is used for identifying the address of the monitoring device, and the display and release module is used for displaying the real-time monitoring data result, and the real-time monitoring data result can be displayed through a PC (personal computer), or viewed through a mobile phone client or viewed through webpage browsing; and the database unit module is used for storing the monitoring data sent by the monitoring device.
A monitoring and early warning method for partial discharge of a distribution automation switch comprises the following steps:
s1, sound collection, namely collecting an operation sound signal segment on a switch through a sound sensitive sensor arranged on a distribution automation switch;
s2, storing sound, namely storing a plurality of acquired running sound signal segments through a monitoring device;
s3, sound processing, namely filtering, identifying and comparing the obtained multiple running sound signal segments through a monitoring device;
s4, partial discharge judgment, namely processing the acquired multiple running sound signal fragments through a monitoring device to obtain whether a partial discharge phenomenon exists or not;
s5, partial discharge early warning, namely sending partial discharge early warning information through a monitoring device and sending the partial discharge early warning to a server;
and S6, partial discharge alarming, wherein after receiving the partial discharge early warning information, the server publishes the partial discharge alarming information through a display publishing module.
According to a further preferable technical scheme, in the step S1, the sound-sensitive sensor is mounted on the distribution automation switch housing and is used for collecting the sound generated by the operation of the distribution automation switch; in the step S2, the monitoring device divides the acquired sound of the operation of the distribution automation switch into a plurality of continuous sound segments by taking fixed time as a unit, and stores the sound segments in the memory unit by taking time as a sequence; in the step S3, the monitoring device firstly extracts a plurality of continuous sound segments stored in the step S2 and performs low-frequency filtering processing through the filtering unit, and then compares the sound segments with the established sound wave model unit through the identification comparison unit to perform high-frequency ultrasonic characteristic comparison, the identification result output unit judges whether the partial discharge phenomenon occurs according to the matching comparison result of the sound wave characteristic matching unit, the sound wave model unit includes a plurality of operation sound model libraries generated by training, performs high-frequency ultrasonic characteristic comparison analysis through collected switch operation sound and the operation sound model libraries, and outputs a result through the identification result output unit; in the step S4, the monitoring device determines whether partial discharge occurs according to a comparison condition between the monitoring device and the sound wave model unit after the sound wave model unit performs extraction analysis processing on the plurality of continuous sound segments in the step S3, determines that partial discharge occurs in the distribution automation switch if high-frequency ultrasonic waves exist according to sound wave characteristic comparison analysis, and determines that partial discharge does not occur in the distribution automation switch if high-frequency ultrasonic waves do not exist according to sound wave characteristic comparison analysis; in the step S5, in the step S4, the monitoring device makes a judgment whether the partial discharge phenomenon occurs according to the sound of the operation of the distribution automation switch, and when the partial discharge phenomenon occurs, the monitoring device sends the distribution automation switch partial discharge early warning information to the server, wherein the monitoring device sends the monitored partial discharge amplitude, partial discharge phase and partial discharge frequency data to the server, and the server performs data statistical calculation on the switch partial discharge early warning information to form a switch partial discharge map; the server in the step S5 corresponds to a plurality of monitoring devices, each monitoring device has unique address code information and corresponds to the address information in the database unit module on the server, and when the monitoring devices give out partial discharge early warning information to the server, the partial discharge positioning of the distribution automation switch is realized according to the address identification module on the server; in the step S6, after receiving the partial discharge warning information, the server displays and issues the partial discharge warning information in real time through the display, and the server issues the partial discharge warning information through the database unit module, so as to be remotely checked, or check the partial discharge warning information through the mobile phone client.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a distribution automation switch partial discharge monitoring and early warning system, which is characterized in that a monitoring device is used for dividing a distribution automation switch operation sound acquired on site into a plurality of sound segments for storage, then the sound segments are subjected to low-frequency filtering and then are matched and compared with partial discharge ultrasonic wave characteristics, whether partial discharge information occurs in a switch is judged, and the early warning information is sent to a server.
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FIG. 1 is a schematic diagram of the topology of the system of the present invention;
FIG. 2 is a schematic diagram of the hardware structure of the monitoring device according to the present invention;
FIG. 3 is a block diagram of a monitoring and early warning method of the present invention.
In the figure: 1. monitoring devices, 2, communication terminals, 3, servers, 4 and sound sensitive sensors.
Detailed Description
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "first", "second", "middle end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any part or element in the present disclosure, and are not to be construed as limiting the present disclosure.
The following embodiments are described in further detail with reference to the accompanying drawings, so that the technical solutions of the present invention are described more clearly, it should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of the present invention.
As shown in fig. 1 to 3, a power distribution automation switch partial discharge monitoring and early warning system includes a monitoring device 1, a communication terminal 2, a server 3, and a sound sensor 4, wherein the monitoring device 1 is in communication connection with the communication terminal 2, the communication terminal 2 is in communication connection with the server 3, and a partial discharge early warning model is operated on the server 3; the sound-sensitive sensor 4 is used for acquiring running sound information of the distribution automation switch; the acoustic sensor 4 is connected with the input end of the monitoring device 1; the monitoring device 1 is used for storing and digitally processing the distribution automation switch operation sound information acquired by the sound-sensitive sensor 4 and sending the processed data to the server 3. The monitoring device 1 in the embodiment of the invention is used for acquiring the operation sound information of the distribution automation switch, dividing the operation sound information into a plurality of sound segments according to time sequence and duration, storing the sound segments, extracting the sound segments, performing low-frequency filtering processing, comparing the sound segments after filtering processing with the partial discharge sound feature library, analyzing and judging whether partial discharge high-frequency sound signals exist in the acquired operation sound of the distribution automation switch, making partial discharge judgment, sending the partial discharge early warning information of the monitoring switch to the server, and displaying the partial discharge early warning information in real time through the server.
The monitoring device 1 comprises a single chip microcomputer unit, a filtering unit, a memory unit, a clock control unit, an identification comparison unit, an analog-to-digital conversion unit, a communication module unit, an indicator light module unit and a key module unit; the single chip microcomputer unit is a processing control center of the monitoring device 1; the filtering unit is used for carrying out low-frequency filtering processing on the partial discharge information acquired by the acoustic sensor 4 and amplifying the high-frequency signal; the memory unit is used for storing the partial discharge information acquired by the acoustic sensor 4; the identification comparison unit is used for identifying and judging whether a high-frequency signal is generated or not; the indicator light module unit is used for outputting the running state information of the monitoring device 1; the key module unit is used for controlling, debugging and monitoring the device 1 on site. According to the embodiment of the invention, the monitoring device 1 divides the acquired running sound information of the distribution automation switch into a plurality of sound segments according to the time sequence and the time length for storage, the time length can be 5 seconds or 10 seconds in the embodiment of the invention as the fixed time length of the sound segments, the time length of the monitoring device 1 is the fixed time length when the sound segments are stored, and after the sound segments are stored, the low-frequency filtering processing is carried out on the sound segments, the sound segments are compared with the high-frequency ultrasonic wave characteristics, and whether high-frequency signals are generated in the sound segments is judged. When the monitoring device 1 monitors that the switch has the partial discharge phenomenon, the partial discharge information is sent to the server 3, and the server 3 displays and releases the partial discharge information.
The single chip microcomputer unit is an ARM series single chip microcomputer. The single chip microcomputer in the embodiment of the invention is an ARM series single chip microcomputer, an ARM architecture is a first RI SC microprocessor designed for a low-budget market, the ARM architecture is basically the industry standard of a 32-bit single chip microcomputer, a series of inner cores, system extensions, microprocessors and system chip schemes are provided, and the ARM has a relatively strong transaction management function and can be used for running interfaces, application programs and the like. In the embodiment of the invention, the single chip microcomputer unit is used for constructing an embedded operating system, and a special computer system which takes a microcontroller as a core control unit and is embedded into an object system. In the embodiment of the invention, a single chip unit divides continuous sound information obtained by the operation of a switch into a plurality of continuous sound segments, stores the sound segments, then carries out low-frequency filtering on the sound segments, carries out high-frequency ultrasonic characteristic matching comparison, and judges whether a high-frequency ultrasonic partial discharge phenomenon exists in the operation sound of the switch.
The identification comparison unit comprises an acoustic wave model unit, an acoustic wave feature matching unit and an identification result output unit, the acoustic wave model unit is used for training an operation sound model and generating an operation sound model library, and the acoustic wave feature matching unit is used for comparing and matching the acquired operation sound information of the distribution automation switch with the operation sound model library; and the recognition result output unit is used for judging whether the partial discharge phenomenon occurs or not according to the matching result of the acoustic wave characteristic matching unit and outputting a result. The ultrasonic wave is a high-frequency sound wave, and low-frequency filtering processing is performed between sound wave feature matching, so that parameter parameters of the sound wave feature matching unit can be compared with amplitude and period features to judge whether the high-frequency sound wave feature quantity exists in the sound fragment.
The wireless communication module is a 4G wireless module or a 5G wireless module or an Internet of things wireless module.
The acoustic sensor 4 is an ultrasonic acoustic sensor.
The server 3 comprises an early warning module, an address identification module, a display and release module and a database unit module; the early warning module is used for providing warning information; the address identification module is used for identifying the address of the monitoring device 1, and the display and release module is used for displaying the real-time monitoring data result, and displaying the real-time monitoring data result through a PC (personal computer), or viewing the real-time monitoring data result through a mobile phone client or viewing the real-time monitoring data result through webpage browsing; the database unit module is used for storing monitoring data sent by the monitoring device 1. In the embodiment of the invention, a database unit module is a database management system constructed based on a mysq l database, a server 3 comprises a base identification module, the server 3 is connected with a plurality of monitoring devices 1, each monitoring device 1 has a unique identification address code, switch early warning information data sent to the server 3 by each monitoring device 1 is put into a corresponding address database list, and a client or a mobile phone client can access the database through a network to check switch partial discharge operation information.
A monitoring and early warning method for partial discharge of a distribution automation switch comprises the following steps:
s1, sound collection, namely collecting a running sound signal fragment on a switch through a sound-sensitive sensor 4 arranged on a distribution automation switch;
s2, storing sound, namely storing a plurality of acquired running sound signal segments through the monitoring device 1;
s3, sound processing, namely filtering, identifying and comparing the obtained multiple running sound signal segments through the monitoring device 1;
s4, judging partial discharge, namely processing the obtained multiple running sound signal fragments through the monitoring device 1 to obtain whether a partial discharge phenomenon exists or not;
s5, partial discharge early warning, namely sending partial discharge early warning information through the monitoring device 1 and sending the partial discharge early warning to the server 3;
and S6, partial discharge alarming, wherein the server 3 issues partial discharge alarming information through a display issuing module after receiving the partial discharge early warning information.
In the step S1, the sound-sensitive sensor 4 is installed on the power distribution automation switch housing and is used for collecting the sound generated by the operation of the power distribution automation switch;
in the step S2, the monitoring device 1 divides the acquired sound of the operation of the distribution automation switch into a plurality of continuous sound segments with a fixed time length as a unit, and stores the sound segments in a memory unit with time as a sequence;
in the step S3, the monitoring device 1 firstly extracts a plurality of continuous sound fragments stored in the step S2 and performs low-frequency filtering processing through the filtering unit, and then compares the sound fragments with the established sound wave model unit through the identification comparison unit to perform high-frequency ultrasonic characteristic comparison, the identification result output unit judges whether the partial discharge phenomenon occurs according to the matching comparison result of the sound wave characteristic matching unit, the sound wave model unit includes a plurality of operation sound model libraries generated by training, performs high-frequency ultrasonic characteristic comparison analysis through the collected switch operation sound and the operation sound model libraries, and outputs a result through the identification result output unit;
in the step S4, the monitoring device 1 determines whether the partial discharge phenomenon occurs according to a comparison condition with the sound wave model unit after the sound wave model unit extracts and analyzes the plurality of continuous sound segments in the step S3, determines that the partial discharge phenomenon occurs in the distribution automation switch if the high-frequency ultrasonic waves exist according to the sound wave characteristic comparison analysis, and determines that the partial discharge phenomenon does not occur in the distribution automation switch if the high-frequency ultrasonic waves do not exist according to the sound wave characteristic comparison analysis;
in the step S5, in the step S4, the monitoring device 1 makes a judgment on whether an partial discharge phenomenon occurs according to the sound of the operation of the distribution automation switch, and when the partial discharge phenomenon occurs, the monitoring device 1 sends the distribution automation switch partial discharge early warning information to the server 3, wherein the monitoring device 1 sends the monitored partial discharge amplitude, partial discharge phase and partial discharge frequency data to the server 3, and the server 3 performs data statistics calculation on the switch partial discharge early warning information to form a switch partial discharge map; in the step S5, the server 3 corresponds to a plurality of monitoring devices 1, each monitoring device 1 has unique address code information and corresponds to the address information in the database unit module on the server 3, and when the monitoring devices 1 give out partial discharge early warning information to the server 3, the partial discharge positioning of the distribution automation switch is realized according to the address identification module on the server 3;
in the step S6, after receiving the partial discharge early warning information, the server 3 displays and issues the partial discharge warning information in real time through the display, and the server 3 issues the partial discharge early warning information through the database unit module on a webpage for remote viewing, or views the partial discharge early warning information through the mobile phone client.
It should be understood that the above-mentioned embodiments are not intended to limit the present invention, and the present invention is not limited to the above-mentioned examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a distribution automation switch partial discharge monitoring and early warning system which characterized in that:
the monitoring device (1) is in communication connection with the communication terminal (2), the communication terminal (2) is in communication connection with the server (3), and the server (3) runs a partial discharge early warning model;
the sound-sensitive sensor (4) is used for acquiring running sound information of the distribution automation switch; the sound-sensitive sensor (4) is connected with the input end of the monitoring device (1);
the monitoring device (1) is used for storing and digitally processing the distribution automation switch operation sound information acquired by the sound-sensitive sensor (4) and sending the processed data to the server (3).
2. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 1, characterized in that:
the monitoring device (1) comprises a singlechip microcomputer unit, a filtering unit, a memory unit, a clock control unit, an identification comparison unit, an analog-digital conversion unit, a communication module unit, an indicator light module unit and a key module unit; the single chip microcomputer unit is a processing control center of the monitoring device (1); the filtering unit is used for carrying out low-frequency filtering processing on the partial discharge information acquired by the acoustic sensor (4) and amplifying the high-frequency signal; the memory unit is used for storing partial discharge information acquired by the acoustic sensor (4); the identification comparison unit is used for identifying and judging whether a high-frequency signal is generated or not; the indicator light module unit is used for outputting the running state information of the monitoring device (1); the key module unit is used for controlling, debugging and monitoring the device (1) on site.
3. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 2, characterized in that:
the single chip microcomputer unit is an ARM series single chip microcomputer.
4. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 2, characterized in that:
the identification comparison unit comprises an acoustic wave model unit, an acoustic wave feature matching unit and an identification result output unit, the acoustic wave model unit is used for training an operation sound model and generating an operation sound model library, and the acoustic wave feature matching unit is used for comparing and matching the acquired operation sound information of the distribution automation switch with the operation sound model library; and the recognition result output unit is used for judging whether the partial discharge phenomenon occurs or not according to the matching result of the acoustic wave characteristic matching unit and outputting the result.
5. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 1, characterized in that:
communication terminal (2) are FTU terminal or for wireless communication module for having the function of relaying, monitoring devices (1) and communication terminal (2) are serial ports communication or for 485 communications or for RJ45 interface communication.
6. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 5, characterized in that:
the wireless communication module is a 4G wireless module or a 5G wireless module or an Internet of things wireless module.
7. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 1, characterized in that:
the sound-sensitive sensor (4) is an ultrasonic sound-sensitive sensor.
8. The partial discharge monitoring and early warning system of the power distribution automation switch according to claim 1, characterized in that:
the server (3) comprises an early warning module, an address identification module, a display and release module and a database unit module;
the early warning module is used for providing warning information; the address identification module is used for identifying the address of the monitoring device (1), and the display and release module is used for displaying the real-time monitoring data result, and can display the real-time monitoring data result through a PC (personal computer), or view the real-time monitoring data result through a mobile phone client or view the real-time monitoring data result through webpage browsing; the database unit module is used for storing monitoring data sent by the monitoring device (1).
9. A power distribution automation switch partial discharge monitoring and early warning method is characterized by comprising the following steps:
the monitoring and early warning method comprises the following steps:
s1, sound collection, namely collecting a running sound signal fragment on a switch through a sound sensitive sensor (4) arranged on a distribution automation switch;
s2, storing sound, namely storing a plurality of acquired running sound signal segments through the monitoring device (1);
s3, sound processing, namely filtering, identifying and comparing the acquired running sound signal segments through the monitoring device (1);
s4, partial discharge judgment, namely whether a partial discharge phenomenon exists or not is obtained after the monitoring device (1) processes the acquired multiple operation sound signal fragments;
s5, partial discharge early warning, namely sending partial discharge early warning alarm information through the monitoring device (1) and sending the partial discharge early warning to the server (3);
and S6, local discharge alarming, wherein after receiving the local discharge early warning information, the server (3) publishes the local discharge alarming information through a display publishing module.
10. The partial discharge monitoring and early warning method for the distribution automation switch according to claim 9,
the method is characterized in that:
in the step S1, the sound-sensitive sensor (4) is arranged on a shell of the distribution automation switch and used for collecting the running sound of the distribution automation switch;
in the step S2, the monitoring device (1) divides the acquired sound of the operation of the distribution automation switch into a plurality of continuous sound segments by taking fixed time as a unit, and stores the sound segments into a memory unit by taking time as a sequence;
in the step S3, the monitoring device (1) firstly extracts a plurality of continuous sound fragments stored in the step S2, performs low-frequency filtering processing through the filtering unit, compares the extracted sound fragments with the established sound wave model unit through the identification comparison unit, performs high-frequency ultrasonic characteristic comparison, and determines whether the partial discharge phenomenon occurs according to the matching comparison result of the sound wave characteristic matching unit by the identification result output unit, wherein the sound wave model unit includes a plurality of operation sound model libraries generated by training, performs high-frequency ultrasonic characteristic comparison analysis through collected switch operation sound and the operation sound model libraries, and outputs a result through the identification result output unit;
in the step S4, the monitoring device (1) determines whether the partial discharge phenomenon occurs according to a comparison condition with the sound wave model unit after extracting and analyzing the plurality of continuous sound segments in the step S3, determines that the partial discharge phenomenon occurs in the distribution automation switch if high-frequency ultrasonic waves exist according to sound wave characteristic comparison analysis, and determines that the partial discharge phenomenon does not occur in the distribution automation switch if high-frequency ultrasonic waves do not exist according to sound wave characteristic comparison analysis;
in the step S5, in the step S4, the monitoring device (1) makes a judgment on whether an partial discharge phenomenon occurs according to the sound of the operation of the distribution automation switch, when the partial discharge phenomenon occurs, the monitoring device (1) sends the distribution automation switch partial discharge early warning information to the server (3), wherein the monitoring device (1) sends the monitored partial discharge amplitude, partial discharge phase and partial discharge frequency data to the server (3), and the server (3) performs data statistics calculation on the switch partial discharge early warning information to form a switch partial discharge map; the server (3) corresponds to the plurality of monitoring devices (1) in the step S5, each monitoring device (1) has unique address code information and corresponds to the address information in the database unit module on the server (3), and when the monitoring devices (1) give out partial discharge early warning information to the server (3), the partial discharge positioning of the distribution automation switch is realized according to the address identification module on the server (3);
in the step S6, after receiving the partial discharge early warning information, the server (3) displays and releases the partial discharge alarm information in real time through the display, and the server (3) releases the partial discharge early warning information through the database unit module by a webpage for remote checking or checks the partial discharge early warning information through the mobile phone client.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117783797A (en) * | 2024-02-28 | 2024-03-29 | 国网山东省电力公司莒县供电公司 | Power distribution automatic switch partial discharge detection early warning system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316847A (en) * | 2014-09-16 | 2015-01-28 | 国家电网公司 | On-line monitoring and positioning system for partial discharge of transformer station |
| CN205581259U (en) * | 2016-04-07 | 2016-09-14 | 苏州华天国科电力科技有限公司 | GIS local discharge on -line monitoring system with little meteorological monitoring |
| CN209656838U (en) * | 2019-02-16 | 2019-11-19 | 新疆天成鲁源电气工程有限公司 | Partial discharge monitoring system |
| CN209690447U (en) * | 2019-02-16 | 2019-11-26 | 新疆天成鲁源电气工程有限公司 | Cable local discharge on-line monitoring system |
| CN110554285A (en) * | 2019-09-02 | 2019-12-10 | 中铁工程设计咨询集团有限公司 | self-adaptive environmental noise suppression partial discharge monitoring method |
| CN110568324A (en) * | 2019-08-06 | 2019-12-13 | 北京三清互联科技有限公司 | GIS partial discharge online monitoring system and method |
| CN211123116U (en) * | 2019-07-31 | 2020-07-28 | 上海宜商实业发展有限公司 | Partial discharge on-line monitoring system |
| CN113092972A (en) * | 2021-06-07 | 2021-07-09 | 杭州兆华电子有限公司 | Partial discharge type identification method and device based on non-contact ultrasonic sensor |
| CN215375640U (en) * | 2021-01-28 | 2021-12-31 | 武汉朗德电气有限公司 | GIL ultrahigh frequency partial discharge on-line monitoring device |
| CN216770674U (en) * | 2021-11-23 | 2022-06-17 | 宜宾市领音智能科技有限公司 | Multi-sensor early warning system |
-
2022
- 2022-09-20 CN CN202211144763.4A patent/CN115453289A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316847A (en) * | 2014-09-16 | 2015-01-28 | 国家电网公司 | On-line monitoring and positioning system for partial discharge of transformer station |
| CN205581259U (en) * | 2016-04-07 | 2016-09-14 | 苏州华天国科电力科技有限公司 | GIS local discharge on -line monitoring system with little meteorological monitoring |
| CN209656838U (en) * | 2019-02-16 | 2019-11-19 | 新疆天成鲁源电气工程有限公司 | Partial discharge monitoring system |
| CN209690447U (en) * | 2019-02-16 | 2019-11-26 | 新疆天成鲁源电气工程有限公司 | Cable local discharge on-line monitoring system |
| CN211123116U (en) * | 2019-07-31 | 2020-07-28 | 上海宜商实业发展有限公司 | Partial discharge on-line monitoring system |
| CN110568324A (en) * | 2019-08-06 | 2019-12-13 | 北京三清互联科技有限公司 | GIS partial discharge online monitoring system and method |
| CN110554285A (en) * | 2019-09-02 | 2019-12-10 | 中铁工程设计咨询集团有限公司 | self-adaptive environmental noise suppression partial discharge monitoring method |
| CN215375640U (en) * | 2021-01-28 | 2021-12-31 | 武汉朗德电气有限公司 | GIL ultrahigh frequency partial discharge on-line monitoring device |
| CN113092972A (en) * | 2021-06-07 | 2021-07-09 | 杭州兆华电子有限公司 | Partial discharge type identification method and device based on non-contact ultrasonic sensor |
| CN216770674U (en) * | 2021-11-23 | 2022-06-17 | 宜宾市领音智能科技有限公司 | Multi-sensor early warning system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117783797A (en) * | 2024-02-28 | 2024-03-29 | 国网山东省电力公司莒县供电公司 | Power distribution automatic switch partial discharge detection early warning system |
| CN117783797B (en) * | 2024-02-28 | 2024-05-10 | 国网山东省电力公司莒县供电公司 | Power distribution automatic switch partial discharge detection early warning system |
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