CN107861009A - A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system - Google Patents
A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system Download PDFInfo
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- CN107861009A CN107861009A CN201711424715.XA CN201711424715A CN107861009A CN 107861009 A CN107861009 A CN 107861009A CN 201711424715 A CN201711424715 A CN 201711424715A CN 107861009 A CN107861009 A CN 107861009A
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- integration unit
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- transmission line
- multiplexer
- current
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- G—PHYSICS
- 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
Abstract
The invention belongs to electric transmission line lightning arrester to monitor field；Surveillance center sends request monitoring electric transmission line lightning arrester status request information to integration unit；After integration unit receives request command, request synchronizing signal is handed down to device on line；Signal is sent to integration unit by device again after request command is received on line；Device and integration unit synchronize sampling to transmission line of electricity electric current and arrester leakage current on line, respectively obtain transmission line parameter, the data being collected by communication and pair when multiplexer one be sent to communication and pair when multiplexer two, the data after conversion are sent to integration unit again；The data of receiving are carried out calculating analysis by integration unit, the rear cracking state for judging leakage conductor；By the parameter for the ground connection line current for gathering leakage conductor, its total current, current in resistance property, capacity current are calculated, to judge the degradation of leakage conductor, realizes the on-line monitoring to leakage conductor.
Description
Technical field：
The invention belongs to electric transmission line lightning arrester to monitor field, and in particular to one kind is supervised online based on electric transmission line lightning arrester
The monitoring method of examining system.
Background technology：
By thunder and lightning trigger natural calamity it is more and more frequent, people start gradually worry thunder and lightning caused by heavy damage with
And great economic loss, although only 0.01 second or so the discharge time of a thunder and lightning, its energy discharged lacks big
It is surprising.Therefore the solution of science and precautionary measures turn into the topic that today's society is paid close attention to jointly.Although lived from human beings worldwide
The relevant statistical result carried out in the range of dynamic region shows that the absolute value that atmospheric electrical phenomena occurs does not have much increases, but thunder
Electricity causes the frequency of disaster but to increase increasingly, and caused by destructiveness be also on the rise, particularly power network；Therefore, have
The lightning protection measures of effect and safety, and how to reduce various destructions of the thunder and lightning to electric power networks and increasingly become Jiao of concern
Point.
Safe power transmission, to prevent from tripping because of line fault be one of important topic of current power transmission and transformation industry.Thunderbolt causes
Power outage caused by line insulator string flashover and lightning surge intrusion substation, transmission line of electricity is accounted in south China each province
The 60% of flashover fault, particularly 110kV circuits, plains region strike mechanism are 0.1~0.5 time/100km, and mountain area is up to 1
~4 times/100km.It is to prevent one of lightning strike accident, the effective ways for reducing trip-out rate to install leakage conductor additional.
Power-frequency overvoltage or thunderbolt, leakage conductor may be made to be damaged, if taking measures not in time, it will
Cause serious accident.China does not have on-Line Monitor Device and the on-line monitoring side of complete set for leakage conductor at present
Method, manually detect it is not only time-consuming be sometimes difficult to accomplish to make a thorough investigation, especially to unattended part of path, when being even more difficult to first
Between obtain the status information of leakage conductor, often just learnt after there is major accident.Therefore realize that transmission line of electricity is taken shelter from the thunder
Device is monitored on-line, and the safe operation to China's power network will be most important.Arrester on-line monitoring is to leakage current to synchronized sampling
Requirement it is very high, the time difference of sampling determines the measurement accuracy of monitoring system, in order to improve the synchronization accuracy of sampling, it is necessary to
A voltage is looked in transmission line of electricity as time reference, the precision of raising leakage conductor synchronized sampling.
The content of the invention：
It is simple to operate the invention provides a kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system, lead to
The parameter of the ground connection line current of collection leakage conductor is crossed, its total current, current in resistance property, capacity current are calculated, to judge line
The degradation of road arrester, realize the on-line monitoring to leakage conductor.
A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system, specific implementation step include：
Step 1：Surveillance center can timing or real time down request monitoring electric transmission line lightning arrester status request information, pass through
Signal is sent to integration unit by 4G communication units in real time；
Step 2：After integration unit receives request command, by Zigbee communication units synchronizing signal will be asked to be handed down to line
Upper device；
Step 3：Device is after the request command from integration unit is received on line, by the signal with temporal information again
Integration unit is sent to, realizes Simultaneous Monitoring；
Step 4：Device and integration unit enter according to time signal to transmission line of electricity electric current and arrester leakage current on line
Row synchronized sampling, respectively obtain fundamental voltage amplitude, phase, frequency, the harmonic amplitude of transmission line of electricity electric current and arrester leakage current
Etc. parameter, the data being collected by communication and pair when multiplexer one 485 level converters be sent to communication and pair when
Data after conversion are sent to integration unit by 485 level converters of multiplexer two again；
Step 5：The data of receiving are carried out calculating analysis by integration unit, obtain leakage conductor total current, current in resistance property
The cracking state of leakage conductor is then judged with capacity current, and the status information packing of leakage conductor is passed through into 4G and communicated
Unit is sent to remote monitoring terminal.
A kind of electric transmission line lightning arrester on-line monitoring system include Surveillance center, 4G communication units, Zigbee communication units,
Device, clock and data/address bus RS485 on line, communication and pair when multiplexer one, communication and pair when multiplexer two, comprehensive dress
Put and monitoring terminal；Described Surveillance center by 4G communication units with communicate and pair when multiplexer one and integration unit connect
Connect, communication and pair when multiplexer one one end be connected with integration unit, device connection, logical on the other end and line of integration unit
Letter and pair when multiplexer one and integration unit by clock and data/address bus RS485 and communicate and pair when multiplexer two and supervise
Survey terminal connection.
Preferably, communication and pair when multiplexer one include fpga chip, 50M crystal oscillators one, digital parsing module, the time production
Raw module, B codes coding module one and 485 level switch modules one.
Preferably, communication and pair when multiplexer two include fpga chip, 50M crystal oscillators two, data identification module, B codes compile
The code level switch module two of module two and 485.
The present invention is simple to operate, base of the integration unit collection power line current as arrester synchronized sampling on line
Standard, synchronizing signal is sent to integration unit by way of Zigbee communication, passes through clock and data/address bus RS485 polls
Mode reads the data of each monitoring terminal, simplifies apparatus structure, improves conductor efficiency.By gathering leakage conductor
The parameter of line current is grounded, calculates its total current, current in resistance property, capacity current, to judge the degradation of leakage conductor,
Realize the on-line monitoring to leakage conductor.
Specific embodiment：
A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system, specific implementation step include：
Step 1：Surveillance center can timing or real time down request monitoring electric transmission line lightning arrester status request information, pass through
Signal is sent to integration unit by 4G communication units in real time；
Step 2：After integration unit receives request command, by Zigbee communication units synchronizing signal will be asked to be handed down to line
Upper device；
Step 3：Device is after the request command from integration unit is received on line, by the signal with temporal information again
Integration unit is sent to, realizes Simultaneous Monitoring；
Step 4：Device and integration unit enter according to time signal to transmission line of electricity electric current and arrester leakage current on line
Row synchronized sampling, respectively obtain fundamental voltage amplitude, phase, frequency, the harmonic amplitude of transmission line of electricity electric current and arrester leakage current
Etc. parameter, the data being collected by communication and pair when multiplexer one 485 level converters be sent to communication and pair when
Data after conversion are sent to integration unit by 485 level converters of multiplexer two again；
Step 5：The data of receiving are carried out calculating analysis by integration unit, obtain leakage conductor total current, current in resistance property
The cracking state of leakage conductor is then judged with capacity current, and the status information packing of leakage conductor is passed through into 4G and communicated
Unit is sent to remote monitoring terminal.
A kind of electric transmission line lightning arrester on-line monitoring system include Surveillance center, 4G communication units, Zigbee communication units,
Device, clock and data/address bus RS485 on line, communication and pair when multiplexer one, communication and pair when multiplexer two, comprehensive dress
Put and monitoring terminal；Described Surveillance center by 4G communication units with communicate and pair when multiplexer one and integration unit connect
Connect, communication and pair when multiplexer one one end be connected with integration unit, device connection, logical on the other end and line of integration unit
Letter and pair when multiplexer one and integration unit by clock and data/address bus RS485 and communicate and pair when multiplexer two and supervise
Survey terminal connection.
Communication and pair when multiplexer one include fpga chip, 50M crystal oscillators one, digital parsing module, time generation module,
B codes coding module one and 485 level switch modules one.Communication and pair when multiplexer two include fpga chip, 50M crystal oscillators two,
Data identification module, B codes coding module two and 485 level switch modules two.
Claims (4)
- A kind of 1. monitoring method based on electric transmission line lightning arrester on-line monitoring system, it is characterised in that：Specific implementation step bag Include：Step 1：Surveillance center can timing or real time down request monitoring electric transmission line lightning arrester status request information, led to by 4G Signal is sent to integration unit by news unit in real time；Step 2：After integration unit receives request command, synchronizing signal will be asked to be handed down on line by Zigbee communication units and filled Put；Step 3：Device sends the signal with temporal information after the request command from integration unit is received again on line To integration unit, Simultaneous Monitoring is realized；Step 4：Device and integration unit are carried out same according to time signal to transmission line of electricity electric current and arrester leakage current on line Step sampling, respectively obtain the ginseng such as the fundamental voltage amplitude of transmission line of electricity electric current and arrester leakage current, phase, frequency, harmonic amplitude Number, the data being collected by communication and pair when multiplexer one 485 level converters be sent to communication and pair when be multiplexed Data after conversion are sent to integration unit by 485 level converters of device two again；Step 5：The data of receiving are carried out calculating analysis by integration unit, obtain leakage conductor total current, current in resistance property and appearance Property electric current, then judge the cracking state of leakage conductor, and the status information packing of leakage conductor is passed through into 4G communication units Member is sent to remote monitoring terminal.
- 2. one kind according to claim 1 is based on electric transmission line lightning arrester on-line monitoring system, it is characterised in that：Described A kind of electric transmission line lightning arrester on-line monitoring system on Surveillance center, 4G communication units, Zigbee communication units, line including filling Put, clock and data/address bus RS485, communication and pair when multiplexer one, communication and pair when multiplexer two, integration unit and prison Survey terminal；Described Surveillance center by 4G communication units with communication and pair when multiplexer one and integration unit be connected, communication And pair when multiplexer one one end be connected with integration unit, on the other end and line of integration unit device connect, communication and it is right When multiplexer one and integration unit by clock and data/address bus RS485 with communicate and pair when multiplexer two and monitoring terminal Connection.
- 3. kind according to claim 2 is based on electric transmission line lightning arrester on-line monitoring system, gas is characterised by：Communicate and right When multiplexer one include fpga chip, 50M crystal oscillators one, digital parsing module, time generation module, the and of B codes coding module one 485 level switch modules one.
- 4. kind according to claim 2 is based on electric transmission line lightning arrester on-line monitoring system, gas is characterised by：Communicate and right When multiplexer two include fpga chip, 50M crystal oscillators two, data identification module, B codes coding module two and 485 level conversion moulds Block two.
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| CN201711424715.XA CN107861009A (en) | 2017-12-25 | 2017-12-25 | A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system |
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| CN201711424715.XA CN107861009A (en) | 2017-12-25 | 2017-12-25 | A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068262A (en) * | 2023-02-10 | 2023-05-05 | 国网江苏省电力有限公司如东县供电分公司 | Online monitoring method for resistive current of zinc oxide arrester of overhead transmission line |
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| CN102565542A (en) * | 2012-02-10 | 2012-07-11 | 国电南瑞科技股份有限公司 | Capacitive equipment medium loss online monitoring method based on IEC61850-9-2 standard |
| CN103545933A (en) * | 2013-11-11 | 2014-01-29 | 国家电网公司 | Instation I/O interface protocol of intelligent substation online monitoring system |
| CN104280634A (en) * | 2014-09-29 | 2015-01-14 | 西安工程大学 | Online monitoring system for capacitive device of transformer substation and monitoring method |
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2017
- 2017-12-25 CN CN201711424715.XA patent/CN107861009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565542A (en) * | 2012-02-10 | 2012-07-11 | 国电南瑞科技股份有限公司 | Capacitive equipment medium loss online monitoring method based on IEC61850-9-2 standard |
| CN103545933A (en) * | 2013-11-11 | 2014-01-29 | 国家电网公司 | Instation I/O interface protocol of intelligent substation online monitoring system |
| CN104280634A (en) * | 2014-09-29 | 2015-01-14 | 西安工程大学 | Online monitoring system for capacitive device of transformer substation and monitoring method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068262A (en) * | 2023-02-10 | 2023-05-05 | 国网江苏省电力有限公司如东县供电分公司 | Online monitoring method for resistive current of zinc oxide arrester of overhead transmission line |
| CN116068262B (en) * | 2023-02-10 | 2023-12-29 | 国网江苏省电力有限公司如东县供电分公司 | Online monitoring method for resistive current of zinc oxide arrester of overhead transmission line |
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Application publication date: 20180330 |
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