CN211701617U - Power distribution network monitoring system - Google Patents
Power distribution network monitoring system Download PDFInfo
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- CN211701617U CN211701617U CN202020453404.7U CN202020453404U CN211701617U CN 211701617 U CN211701617 U CN 211701617U CN 202020453404 U CN202020453404 U CN 202020453404U CN 211701617 U CN211701617 U CN 211701617U
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Abstract
The utility model provides a distribution network monitoring system, including the acquisition sensor, the acquisition sensor is connected with signal distributor and communication module respectively, signal distributor is connected with signal conditioning module and communication module respectively, signal conditioning module is connected with harmonic analysis module, harmonic analysis module is connected with communication module, communication module is connected with the monitoring host, the monitoring host passes through the switch and is connected with distribution automation system. The utility model discloses can accurate collection join in marriage net twine way running state data and running image data, the monitoring host computer carries out analysis on the spot to running state data and running image data, the monitoring host computer transmits the analysis result for join in marriage the distribution automation system of net twine way backstage operation to the realization is to line fault, the circuit is unusual, the tree barrier, mountain fire, the net twine way condition of long distance region such as large-scale machine invasion construction is monitored and the early warning, and can carry out real-time on-line monitoring to the distribution harmonic.
Description
Technical Field
The utility model relates to a distribution network monitoring system belongs to electric power monitoring technology field.
Background
With the increasingly complex operating environment of the power system and the continuous progress of the innovation of the power system, the traditional power network is urgently to be further promoted, and the conversion to the smart power grid is realized. Self-healing is one of the main functions for realizing safe and reliable operation of the smart grid, and the power grid is required to be capable of realizing fault detection, analysis and isolation and even recovering the normal operation of the smart grid, so that the power supply interruption of a user is minimized or avoided.
Due to the fact that distribution network lines are very wide in distribution, operation and maintenance personnel are very difficult to supervise in real time, and problems such as tree obstacles, mountain fire, artificial climbing, artificial damage of tunnel cables and the like are difficult to manage timely, and unpredictable effects often occur. Especially, the real-time monitoring of the distribution network lines in some remote areas is impossible.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: at present, devices such as fault indicators applied to distribution network lines cannot monitor the distribution network lines in some remote areas in real time, cannot accurately monitor the distribution network lines in real time, cannot obtain real and detailed real-time harmonic data of the distribution network lines for a long time, and avoids harmonic interference generated in a power grid.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, an object of the utility model is to provide a power distribution network monitoring system, the technical scheme of taking is:
the utility model provides a distribution network monitoring system, includes the acquisition sensor, the acquisition sensor is connected with signal distributor and communication module respectively, signal distributor is connected with signal conditioning module and communication module respectively, signal conditioning module is connected with harmonic analysis module, harmonic analysis module is connected with communication module, communication module is connected with the monitoring host computer, the monitoring host computer passes through the switch and is connected with distribution automation system.
Preferably, the collecting sensor comprises a voltage sensor, a current sensor, a temperature sensor and an image sensor, and the signal distributor is used for receiving the voltage signal and the current signal collected by the voltage sensor and the current sensor.
Preferably, the harmonic analysis module includes a DSP digital signal processor and an a/D conversion module, and the DSP digital signal processor is configured to read an a/D conversion result, and perform analysis, operation, and processing of harmonic parameters.
Preferably, the communication module comprises a transmitting module and a receiving module, the transmitting module is respectively connected with the acquisition sensor, the signal distributor and the harmonic analysis module, and the receiving module is connected with the monitoring host.
Preferably, the monitoring host comprises a control module, a GPS time service module and a display module, and the control module is respectively connected with the GPS time service module and the display module.
Further, the control module comprises an external memory, an ARM chip processor and a peripheral circuit, wherein the ARM chip processor adopts an S3C2440B microprocessor.
Furthermore, the GPS time service module comprises a GPS module and a remote communication module, and the GPS time service module receives data reflected by a DSP digital processor of the harmonic analysis module and an ARM chip processor to acquire GPS data and send the current state; and acquiring current GPS information through a GPS module connected with the serial port.
Furthermore, the model of the GPS module is BR-355, and the remote communication module adopts a UT4432 wireless module.
The utility model discloses can accurate collection join in marriage net twine way running state data and running image data, the monitoring host computer carries out analysis on the spot to running state data and running image data, the monitoring host computer transmits the analysis result for the distribution automation system of joining in marriage net twine way backstage operation, give relevant fortune dimension personnel by backstage propelling movement, thereby realize circuit trouble, the circuit is unusual, the tree obstacle, mountain fire, the distribution network line condition of long distance region such as large-scale machine invasion construction monitors and the early warning, and can carry out real-time on-line monitoring to the distribution harmonic, higher application and popularization value has.
Drawings
Fig. 1 is the utility model relates to a distribution network monitoring system's connection relation block diagram.
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 some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a distribution network monitoring system includes a collection sensor, the collection sensor is connected with signal distributor and communication module respectively, signal distributor is connected with signal conditioning module and communication module respectively, signal conditioning module is connected with harmonic analysis module, harmonic analysis module is connected with communication module, communication module is connected with monitoring host computer, monitoring host computer passes through the switch and is connected with distribution automation system.
The communication module comprises a transmitting module and a receiving module, the transmitting module is respectively connected with the acquisition sensor, the signal distributor and the harmonic analysis module, and the receiving module is connected with the monitoring host. The transmitting module and the receiving module adopt a wireless transmitting module and a wireless receiving module, and long-distance data transmission can be realized.
The acquisition sensor comprises a voltage sensor, a current sensor, a temperature sensor and an image sensor, and the signal distributor is used for receiving voltage signals and current signals acquired by the voltage sensor and the current sensor. The current sensor and the voltage sensor respectively adopt a current transformer and a voltage transformer, are respectively used for acquiring current and voltage information of a power line, distribute voltage signals and current signals through a signal distributor, and output the voltage signals and the current signals to the harmonic analysis module through the signal conditioning module. The temperature sensor is used for collecting temperature data of the power line, and the temperature can also reflect the health condition of equipment and the load condition of the equipment to a certain extent due to the change of the line temperature and the temperature, so the temperature is also used as one of the parameters collected by the collecting sensor. The image sensor is internally provided with an image shooting module and an image intelligent analysis module, so that the shooting target can be flexibly sensed and captured. The other path of voltage signal and current signal after passing through the signal distributor are communicated with a temperature signal corresponding to the temperature data of the power line acquired by the temperature sensor and image information data acquired by the image sensor, and then the temperature signal and the image information data are sent to the receiving module through the transmitting module of the communication module and then are transmitted to the control module of the monitoring host for analysis and judgment.
The harmonic analysis module comprises a DSP digital signal processor and an A/D conversion module, and the DSP digital signal processor is used for reading an A/D conversion result and analyzing, calculating and processing harmonic parameters. The DSP digital signal processor adopts a TMS320F2812 chip, the highest working frequency can reach 150MHz, sufficient conditions are provided for real-time control and completion of complex algorithms in a short time, the DSP digital signal processing module responds to an instruction of the control module to control ADS8364 to complete A/D conversion, converted data is read, Fast Fourier Transform (FFT) and related parameter calculation are carried out, digital signals obtained after front-end A/D conversion are processed, and the fractional harmonic voltage, the fractional voltage harmonic content and the total voltage harmonic content of three-phase voltages UA, UB and UC can be measured by applying the fast Fourier algorithm (FFT); the device can also measure the sub-harmonic current, the sub-current harmonic content and the total current harmonic content of the three-phase currents IA, IB and IC, and finally sends the measurement result to a receiving module through a transmitting module of a communication module and then transmits the measurement result to a control module of a monitoring host for analysis and processing.
The control module sends the analysis and processing result to a distribution automation system running at the background of the distribution network line through the switch, and the analysis and processing result is pushed to relevant operation and maintenance personnel by the background, so that the monitoring and early warning of the distribution network line conditions in remote areas such as line faults, line abnormity, tree obstacles, mountain fire, large machine intrusion construction and the like are realized, the real-time online monitoring of the distribution harmonic wave can be realized, and the real-time effective monitoring of the generation of the harmonic wave in the power grid is realized.
The monitoring host comprises a control module, a GPS time service module and a display module, wherein the control module is respectively connected with the GPS time service module and the display module. The display module can be used for displaying the analysis processing result of the control module.
The control module comprises an external memory, an ARM chip processor and a peripheral circuit, wherein the ARM chip processor adopts an S3C2440B microprocessor.
The GPS time service module comprises a GPS module and a remote communication module, and the GPS time service module receives data reflected by a DSP (digital signal processor) of the harmonic analysis module and an ARM (advanced RISC machines) chip processor to acquire GPS data and send the current state; and acquiring current GPS information through a GPS module connected with the serial port. The model of the GPS module is BR-355, and the remote communication module adopts a UT4432 wireless module. The data communication of the GPS module adopts a serial port for communication, and the GPS module sends a PPS second pulse and a string of positioning, clock and other information outwards every second. The GPS module receives satellite signals, time synchronization monitoring of the whole system is achieved through a time service channel (RS232), a DSP digital signal processor which is subjected to harmonic analysis reads an A/D conversion result, synchronous acquisition is achieved through the GPS time service module, the GPS time service module displays acquired data on a control module provided with an ARM chip processor through the time service channel of a remote communication module, and accurate synchronization and data acquisition of system clock signals are achieved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a distribution network monitoring system which characterized in that: including the acquisition sensor, the acquisition sensor is connected with signal distributor and communication module respectively, signal distributor is connected with signal conditioning module and communication module respectively, signal conditioning module is connected with harmonic analysis module, harmonic analysis module is connected with communication module, communication module is connected with the monitoring host computer, the monitoring host computer passes through the switch and is connected with distribution automation system.
2. The power distribution network monitoring system of claim 1, wherein: the acquisition sensor comprises a voltage sensor, a current sensor, a temperature sensor and an image sensor, and the signal distributor is used for receiving voltage signals and current signals acquired by the voltage sensor and the current sensor.
3. The power distribution network monitoring system of claim 1, wherein: the harmonic analysis module comprises a DSP digital signal processor and an A/D conversion module, and the DSP digital signal processor is used for reading an A/D conversion result and analyzing, calculating and processing harmonic parameters.
4. The power distribution network monitoring system of claim 1, wherein: the communication module comprises a transmitting module and a receiving module, the transmitting module is respectively connected with the acquisition sensor, the signal distributor and the harmonic analysis module, and the receiving module is connected with the monitoring host.
5. The power distribution network monitoring system of claim 1, wherein: the monitoring host comprises a control module, a GPS time service module and a display module, wherein the control module is respectively connected with the GPS time service module and the display module.
6. The power distribution network monitoring system of claim 5, wherein: the control module comprises an external memory, an ARM chip processor and a peripheral circuit, wherein the ARM chip processor adopts an S3C2440B microprocessor.
7. The power distribution network monitoring system of claim 5, wherein: the GPS time service module comprises a GPS module and a remote communication module, and the GPS time service module receives data reflected by a DSP (digital signal processor) of the harmonic analysis module and an ARM (advanced RISC machines) chip processor to acquire GPS data and send the current state; and acquiring current GPS information through a GPS module connected with the serial port.
8. The power distribution network monitoring system of claim 7, wherein: the model of the GPS module is BR-355, and the remote communication module adopts a UT4432 wireless module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453404.7U CN211701617U (en) | 2020-03-31 | 2020-03-31 | Power distribution network monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020453404.7U CN211701617U (en) | 2020-03-31 | 2020-03-31 | Power distribution network monitoring system |
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| CN211701617U true CN211701617U (en) | 2020-10-16 |
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| CN202020453404.7U Expired - Fee Related CN211701617U (en) | 2020-03-31 | 2020-03-31 | Power distribution network monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363029A (en) * | 2020-10-31 | 2021-02-12 | 国网天津市电力公司 | Equipment corona discharge online monitoring system and monitoring method thereof |
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2020
- 2020-03-31 CN CN202020453404.7U patent/CN211701617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363029A (en) * | 2020-10-31 | 2021-02-12 | 国网天津市电力公司 | Equipment corona discharge online monitoring system and monitoring method thereof |
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Granted publication date: 20201016 Termination date: 20210331 |