CN113884842A - Partial discharge monitoring system suitable for ring net cage - Google Patents
Partial discharge monitoring system suitable for ring net cage Download PDFInfo
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- 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
- G01R31/1227—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 of components, parts or materials
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Abstract
The invention discloses a partial discharge monitoring system suitable for a ring net cage, which comprises: the system comprises a partial discharge monitoring system, a DTU monitoring system and a master station system, wherein the DTU monitoring system is communicated with the partial discharge monitoring system and the master station system respectively; the partial discharge monitoring system is used for monitoring partial discharge data of the ring net cage, carrying out data processing on the partial discharge data, encrypting a data processing result and sending the encrypted data to the DTU monitoring system; the DTU monitoring system is used for receiving the encrypted data processing result sent by the DTU monitoring system, decrypting the data processing result and sending the decrypted data processing result to the main station system. According to the invention, the data is encrypted by the partial discharge monitoring system end and then transmitted, so that the safety of data transmission can be effectively ensured.
Description
Technical Field
The invention relates to the technical field of partial discharge monitoring, in particular to a partial discharge monitoring system suitable for a ring net cage.
Background
The partial discharge phenomenon of the distribution network ring net cage cable is an important basis for judging whether insulation defects occur on the power equipment, is a basis for ensuring safe and reliable power supply of the power equipment, and has very important practical significance and economic benefit on safe and stable operation of the power equipment.
The existing partial discharge monitoring device has poor safety protection performance, does not have an effective monitoring system, lacks a remote monitoring means, and has the following problems:
the first problem is that: the safety protection performance is poor, an effective supervision system is lacked, no encryption means is used as information safety protection in the normal data transmission process, invasion is easy to occur, partial discharge data and operation conditions cannot be effectively checked in real time, and potential safety hazards are brought to reliable operation of a power distribution network;
the second problem is that: the discharge prediction can not be carried out in advance according to the partial discharge information, the operation and maintenance cost in the later period is too high, operation and maintenance personnel are required to check and maintain the partial discharge device on site in the later period due to the lack of a remote supervision method, and great inconvenience is brought to the operation and maintenance work.
Disclosure of Invention
The invention provides a partial discharge monitoring system suitable for a ring net cage, which is used for solving the technical problem of poor safety performance of the existing partial discharge monitoring device.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a partial discharge monitoring system adapted for use with a ring cage, comprising: the system comprises a partial discharge monitoring system, a DTU monitoring system and a master station system, wherein the DTU monitoring system is communicated with the partial discharge monitoring system and the master station system respectively;
the partial discharge monitoring system is used for monitoring partial discharge data of the ring net cage, carrying out data processing on the partial discharge data, encrypting a data processing result and sending the encrypted data to the DTU monitoring system;
the DTU monitoring system is used for receiving the encrypted data processing result sent by the DTU monitoring system, decrypting the data processing result and sending the decrypted data processing result to the main station system.
Preferably, the partial discharge monitoring system comprises a high-precision audio sensor, a signal receiving processor and an intelligent monitoring terminal; the partial discharge data includes a partial discharge audio signal;
the high-precision audio sensor is used for collecting the local discharge audio signals in the cable chamber of the ring network box and transmitting the collected local discharge audio data to the signal receiving processor through the coaxial cable;
the signal receiving processor is used for receiving the partial discharge audio signals, performing interval summarizing processing on the partial discharge audio signals, and transmitting the summarized partial discharge audio signals to the intelligent monitoring terminal;
and the intelligent monitoring terminal is used for carrying out data processing on the summarized partial discharge audio signal data, encrypting a data processing result and sending the encrypted data processing result to the DTU monitoring system.
Preferably, the intelligent monitoring terminal is further connected with a local human-computer interface, and is further configured to encrypt the data processing result and send the encrypted data to the local human-computer interface.
Preferably, the intelligent monitoring terminal comprises a data processing module, an encryption and decryption module and a first communication module;
the data processing module is used for carrying out data processing on the summarized partial discharge audio signal data;
the encryption and decryption module is used for encrypting a data processing result;
and the first communication module is used for sending the encrypted data processing result to the DTU monitoring system and sending the encrypted data processing result to the local human-computer interface.
Preferably, the DTU monitoring system includes a partial discharge management module, a main control module, and a wired communication module;
the partial discharge management module is used for receiving the encrypted data processing result and decrypting the encrypted data processing result;
the main control module is used for arranging the decrypted data processing result into a preset dot table format;
and the wired communication module is used for sending the data processing result in the dot table format to the master station system.
Preferably, the master station system is configured to receive and analyze the data processing result in the dot table format, and send the analyzed data processing result in the dot table format to a remote human-computer interface connected thereto, so that operation and maintenance personnel at a remote human-computer interface end can refer the data processing result.
Preferably, the data processing performed on the partial discharge data by the partial discharge monitoring system is as follows: comparing the partial discharge data with a preset control value, and judging the running state of the annular net cage according to the comparison result; and the data processing result is the judged running state of the ring net cage.
The invention has the following beneficial effects:
1. the partial discharge monitoring system suitable for the ring net cage provided by the invention encrypts data through the partial discharge monitoring system and then transmits the data, so that the safety of data transmission can be effectively ensured.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a partial discharge monitoring system for use with a ring cage in a preferred embodiment of the invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The first embodiment is as follows:
this implementation discloses a partial discharge monitored control system suitable for ring box, includes: the system comprises a partial discharge monitoring system, a DTU monitoring system and a master station system, wherein the DTU monitoring system is communicated with the partial discharge monitoring system and the master station system respectively;
the partial discharge monitoring system is used for monitoring partial discharge data of the ring net cage, carrying out data processing on the partial discharge data, encrypting a data processing result and sending the encrypted data to the DTU monitoring system;
the DTU monitoring system is used for receiving the encrypted data processing result sent by the DTU monitoring system, decrypting the data processing result and sending the decrypted data processing result to the main station system.
The partial discharge monitoring system suitable for the ring net cage provided by the invention encrypts data through the partial discharge monitoring system and then transmits the data, so that the safety of data transmission can be effectively ensured.
Example two:
in order to solve the problems of high cost, high possibility of interference, poor safety protection, high operation and maintenance difficulty and the like of partial discharge of a ring main unit, and solve the problems of partial discharge in the application process in the technical background, the invention provides an effective partial discharge monitoring method by analyzing a partial discharge audio signal, can be applied to an outdoor ring main unit of a power distribution network, monitors the operation state of partial discharge of the ring main unit in real time, and feeds the real-time operation state of partial discharge back to operation and maintenance personnel through a master station system visually, thereby effectively improving the reliability and safety of power supply of the power distribution network.
As shown in fig. 1, in this embodiment, a partial discharge monitoring system suitable for a ring net cage is disclosed, which includes: the system comprises a partial discharge monitoring system, a DTU monitoring system and a master station system;
the partial discharge monitoring system and the DTU monitoring system carry out data transmission through a network interface network communication line. And the DTU monitoring system and the main station system carry out data transmission in an optical fiber/wireless communication mode.
Specifically, the partial discharge monitoring system is composed of a high-precision audio sensor, a signal receiving processor and an intelligent monitoring terminal.
The high-precision audio sensor mainly comprises a capacitor electret microphone, the capacitor electret microphone comprises an acoustoelectric conversion part and an impedance part and is used for collecting the local discharge audio signals in the ring net box cable chamber and transmitting the collected local discharge audio data to the signal receiving processor through the coaxial cable. The signal receiving processor carries out interval arrangement processing on the acquired data and then transmits the processed data to the intelligent monitoring terminal. The intelligent monitoring terminal comprises a data processing module and an encryption and decryption module, and after data analysis and comparison judgment are carried out, analysis and judgment results are encrypted through the encryption and decryption module and then transmitted to the DTU monitoring system and the local human-computer interface respectively.
The capacitor electret microphone is composed of an acoustic-electric conversion part and an impedance part, the high-precision audio sensor collects the discharge sound wave of the cable chamber, and the sound wave enables a film in the capacitor electret microphone to vibrate to cause capacitance change, so that correspondingly changed tiny voltage is generated. And data acquired by the high-precision audio sensor is transmitted to the signal receiver in real time. The signal receiver collects the collected data, and the collected data are transmitted to the intelligent monitoring terminal.
The intelligent monitoring terminal compares the acquired data with a set control value according to the requirement, judges the running state of the annular net cage, encrypts the judgment result and transmits the judgment result to the partial discharge management module and the local human-computer interface respectively. The set control value is a parameter variable and is set according to the actual situation on site.
Specifically, the DTU monitoring system is composed of a partial discharge management module, a main control module and a communication module.
The partial discharge monitoring system comprises a partial discharge monitoring system, a main control module and a partial discharge management module, wherein the partial discharge management module comprises a collection processing unit and an encryption and decryption unit, the collection processing unit is responsible for further processing data uploaded by the partial discharge monitoring system, the encryption and decryption unit is responsible for decrypting a processing result and transmitting the processing result to the main control module, the main control module arranges the received data into a fixed dot table format, and finally the received data is uploaded to the main station system through the communication module.
The DTU system and the main station system carry out data transmission through optical fibers.
The main station system analyzes the data uploaded by the DTU and visually expresses the data to operation and maintenance personnel through a human-computer interaction interface.
The main station system analyzes the data, the running state of the partial discharge in the ring network box cable chamber is fed back to operation and maintenance personnel through the human-computer interaction interface, the operation and maintenance personnel check the running state of the backup power supply through the human-computer interaction interface, and meanwhile, the main station system can remotely control and modify the partial discharge detection soft pressing plate, the partial discharge set value and the detection delay time.
In conclusion, the invention provides an effective ring net cage partial discharge monitoring system, which effectively solves the problems of high difficulty in operation and maintenance, poor safety and reliability and the like of the existing ring net cage partial discharge, provides a safe and stable operation environment for the ring net cage partial discharge, reduces the daily maintenance workload of operation and maintenance personnel, saves manpower and material resources, improves the safety, effectively reduces the maintenance cost, and simultaneously provides a basis for the future maintenance plan arrangement and ensures the safe and stable operation of a power grid.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A partial discharge monitoring system suitable for a ring net cage is characterized by comprising: the system comprises a partial discharge monitoring system, a DTU monitoring system and a master station system, wherein the DTU monitoring system is communicated with the partial discharge monitoring system and the master station system respectively;
the partial discharge monitoring system is used for monitoring partial discharge data of the ring net cage, carrying out data processing on the partial discharge data, encrypting a data processing result and sending the encrypted data to the DTU monitoring system;
the DTU monitoring system is used for receiving the encrypted data processing result sent by the DTU monitoring system, decrypting the data processing result and sending the decrypted data processing result to the main station system.
2. The partial discharge monitoring system suitable for the annular net cage according to claim 1, wherein the partial discharge monitoring system comprises a high-precision audio sensor, a signal receiving processor and an intelligent monitoring terminal; the partial discharge data includes a partial discharge audio signal;
the high-precision audio sensor is used for collecting the local discharge audio signals in the cable chamber of the ring network box and transmitting the collected local discharge audio data to the signal receiving processor through the coaxial cable;
the signal receiving processor is used for receiving the partial discharge audio signals, performing interval summarizing processing on the partial discharge audio signals, and transmitting the summarized partial discharge audio signals to the intelligent monitoring terminal;
and the intelligent monitoring terminal is used for carrying out data processing on the summarized partial discharge audio signal data, encrypting a data processing result and sending the encrypted data processing result to the DTU monitoring system.
3. The partial discharge monitoring system suitable for the annular net cage according to claim 2, wherein the intelligent monitoring terminal is further connected with a local human-computer interface, and is further used for encrypting a data processing result and sending the encrypted data to the local human-computer interface.
4. The partial discharge monitoring system suitable for the annular net cage according to claim 3, wherein the intelligent monitoring terminal comprises a data processing module, an encryption and decryption module and a first communication module;
the data processing module is used for carrying out data processing on the summarized partial discharge audio signal data;
the encryption and decryption module is used for encrypting a data processing result;
and the first communication module is used for sending the encrypted data processing result to the DTU monitoring system and sending the encrypted data processing result to the local human-computer interface.
5. The partial discharge monitoring system suitable for the annular net cage according to claim 4, wherein the DTU monitoring system comprises a partial discharge management module, a main control module and a wired communication module;
the partial discharge management module is used for receiving the encrypted data processing result and decrypting the encrypted data processing result;
the main control module is used for arranging the decrypted data processing result into a preset dot table format;
and the wired communication module is used for sending the data processing result in the dot table format to the master station system.
6. The partial discharge monitoring system suitable for the annular net cage according to claim 5, wherein the master station system is configured to receive and analyze the data processing result in the dot table format, and send the analyzed data processing result in the dot table format to a remote human-computer interface connected thereto, so that operation and maintenance personnel at the remote human-computer interface end can refer to the data processing result.
7. The partial discharge monitoring system suitable for the annular net cage according to any one of claims 1 to 6, wherein the partial discharge monitoring system performs data processing on the partial discharge data as follows: comparing the partial discharge data with a preset control value, and judging the running state of the annular net cage according to the comparison result; and the data processing result is the judged running state of the ring net cage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111347747.0A CN113884842A (en) | 2021-11-15 | 2021-11-15 | Partial discharge monitoring system suitable for ring net cage |
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| CN202111347747.0A CN113884842A (en) | 2021-11-15 | 2021-11-15 | Partial discharge monitoring system suitable for ring net cage |
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| CN103196495A (en) * | 2013-04-01 | 2013-07-10 | 河南理工大学 | Vacuum section switch fault pre-warning system for urban and rural power supply line |
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| CN112130044A (en) * | 2020-10-15 | 2020-12-25 | 国网福建省电力有限公司莆田供电公司 | Cable joint discharge monitoring method and device based on temperature-sound mixing method |
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2021
- 2021-11-15 CN CN202111347747.0A patent/CN113884842A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196495A (en) * | 2013-04-01 | 2013-07-10 | 河南理工大学 | Vacuum section switch fault pre-warning system for urban and rural power supply line |
| CN205263251U (en) * | 2015-12-29 | 2016-05-25 | 深圳友铂科技有限公司 | 10kV cable partial discharge on -line measuring device |
| CN107179487A (en) * | 2017-05-31 | 2017-09-19 | 广州供电局有限公司 | Partial discharge of switchgear monitoring device and method |
| CN108335468A (en) * | 2017-12-12 | 2018-07-27 | 中科（深圳）能源物联网有限公司 | A kind of cable monitoring system |
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