CN113655331A - Medium-voltage carrier feeder fault detection system - Google Patents

Medium-voltage carrier feeder fault detection system Download PDF

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Publication number
CN113655331A
CN113655331A CN202110106633.0A CN202110106633A CN113655331A CN 113655331 A CN113655331 A CN 113655331A CN 202110106633 A CN202110106633 A CN 202110106633A CN 113655331 A CN113655331 A CN 113655331A
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CN
China
Prior art keywords
medium
voltage carrier
feeder
module
slave
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Withdrawn
Application number
CN202110106633.0A
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Chinese (zh)
Inventor
徐剑英
盛云
聂琳涛
李亮
郭怀林
闫庆鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Topscomm Communication Co Ltd
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Qingdao Topscomm Communication Co Ltd
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Priority to CN202110106633.0A priority Critical patent/CN113655331A/en
Publication of CN113655331A publication Critical patent/CN113655331A/en
Withdrawn legal-status Critical Current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
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/546—Combination of signalling, telemetering, protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a medium-voltage carrier feeder line fault detection system, which comprises a medium-voltage carrier host module, a medium-voltage carrier slave module and a feeder line detection terminal module, wherein the medium-voltage carrier host module is connected with the medium-voltage carrier slave module through a communication network; the host module establishes carrier communication connection with the n slave modules and establishes wired network connection with the electric master station; the slave module establishes carrier communication connection with the host module and establishes Ethernet and RS232 serial port communication connection with the feeder terminal; the feeder terminal and the slave machine establish gigabit Ethernet and RS232 serial port connection. The invention can complete the detection of the fault of the feeder line terminal without erecting communication lines such as networks, optical fibers and the like, thereby expanding the coverage range of the feeder line terminal and saving the cost. The system can simultaneously support the data report of 8 feeder terminals, and the engineering practicability is strong. The fault response time is short, and the fault isolation and power supply recovery speed is improved. And each module in the system can complete feeder fault detection without communicating with the main station, and reports the processing process and the result to the distribution automation main station, so that the fault processing efficiency is improved.

Description

Medium-voltage carrier feeder fault detection system
Technical Field
The invention relates to the technical field of medium-voltage power distribution, in particular to a medium-voltage carrier feeder fault detection system.
Background
With the continuous promotion of national power infrastructure, the continuous extension of power networks results in more and more application scenes of power carrier communication networks. The fault detection function of the feeder line terminal is to find line faults in time, diagnose fault areas quickly and isolate the fault areas and recover power supply to non-fault areas quickly by monitoring the operating conditions of the distribution lines (feeder lines). However, in areas where signals cannot be covered, the cost of laying networks and optical fibers is high, and it is difficult to achieve complete coverage of feeder terminals.
The medium-voltage carrier communication device has the advantage of no need of erecting a communication line, and can be used for detecting faults of a feeder terminal through a power line carrier on a power network.
Disclosure of Invention
In order to solve the problems, the invention provides a medium-voltage carrier feeder fault detection system, which can complete the detection of a feeder terminal on a fault without erecting communication lines such as a network, an optical fiber and the like, and can simultaneously support the data report of 8 feeder terminals, wherein the fault response time is within hundred milliseconds. Meanwhile, each module in the system can complete feeder fault detection without communicating with the main station, and reports the processing process and results to the distribution automation main station.
The technical scheme of the invention is as follows:
a medium-voltage carrier feeder fault detection system comprises a medium-voltage carrier host module, a medium-voltage carrier slave module and a feeder detection terminal module;
the medium-voltage carrier host module is in carrier communication connection with the n medium-voltage carrier slave modules and is in wired network connection with the power master station;
the medium-voltage carrier slave module establishes carrier communication connection with the medium-voltage carrier host module and establishes Ethernet and RS232 serial port communication connection with the feeder terminal;
the feeder terminal and the medium-voltage carrier slave machine are connected through a gigabit Ethernet and an RS232 serial port, and the feeder terminal can carry out remote signaling, remote sensing and remote sensing with the master station through the medium-voltage carrier master and slave machine modules when no fault exists.
Further, the medium-voltage carrier slave machine can broadcast the fault information of the connected feeder line terminal to other slave machines, and other feeder line terminals on the line can monitor the fault information through the connected medium-voltage carrier slave machine, so that decision is made by combining all information, and whether the node is powered off or not is finally judged.
Furthermore, each module in the system can complete feeder fault detection without communicating with the main station, and reports the processing process and results to the distribution automation main station.
Further, the medium-voltage carrier slave can transmit the messages of other slaves to the master station in a relay mode.
Further, the system operation step comprises:
step 1: the medium-voltage carrier host module, the medium-voltage carrier slave module and the feeder line detection terminal module are correctly installed and establish normal communication;
step 2: the medium-voltage carrier slave module configures the priority through the medium-voltage carrier host module so as to determine the time slot of the slave module, and the time slot sends the reported information of the feeder terminal;
and step 3: the feeder terminal reports the detected fault information, and the medium-voltage carrier slave machine broadcasts the fault information of the connected feeder terminal on a 10kV power line;
and 4, step 4: other feeder line terminals on the line monitor fault information through the medium-voltage carrier slave machine, and make a decision by combining all the information to finally judge whether the node is powered off;
and 5: and the medium-voltage carrier host module reports the monitored fault information to the automatic master station.
Further, in the system, the power line carrier machine uses an orthogonal frequency division multiplexing technology below 12MHz for signal transmission and reception.
The invention has the beneficial effects that: the fault detection of the feeder line terminal can be completed without erecting communication lines such as networks and optical fibers, the coverage range of the feeder line terminal is expanded, and the cost is saved. The system can simultaneously support the data report of 8 feeder terminals, and has strong engineering practicability. The fault response time is within hundred milliseconds, and the fault isolation and power supply recovery speed is improved. Meanwhile, each module in the system can complete feeder fault detection without communicating with the main station, and reports the processing process and the result to the distribution automation main station, so that the fault processing efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a flow chart of the operation of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments to specifically describe the system scheme of the present invention. The following examples are only for illustrating the system scheme of the present invention more clearly, and should not be taken as limiting the scope of the present invention.
As shown in fig. 1, a medium voltage carrier feeder fault detection system includes a medium voltage carrier host module, a medium voltage carrier slave module, and a feeder detection terminal module;
the medium-voltage carrier host module establishes carrier communication connection with 5 (at most 8) medium-voltage carrier slave modules and establishes wired network connection with the electric power master station;
the medium-voltage carrier slave module establishes carrier communication connection with the medium-voltage carrier host module and establishes Ethernet and RS232 serial port communication connection with the feeder terminal; the medium-voltage carrier slave machine broadcasts the fault information of the connected feeder line terminal to other slave machines, and other feeder line terminals on the line monitor the fault information through the connected medium-voltage carrier slave machine, so that decision is made by combining all information, and whether the node is powered off or not is finally judged; the medium-voltage carrier slave transmits the messages of other slaves to the master station in a relay mode, so that the communication distance is increased.
The feeder terminal and the medium-voltage carrier slave machine establish gigabit Ethernet and RS232 serial port connection, and the highest support is 115200 bps.
And each module in the system can complete feeder fault detection without communicating with the main station, and reports the processing process and results to the distribution automation main station. The system operation steps are shown in fig. 2, and include:
step 1: the medium-voltage carrier host module, the medium-voltage carrier slave module and the feeder line detection terminal module are correctly installed and establish normal communication;
step 2: the medium-voltage carrier slave module configures the priority through the medium-voltage carrier host module so as to determine the time slot of the slave module, and the time slot sends the reported information of the feeder terminal;
and step 3: and the feeder line terminal reports the detected fault information, and the medium-voltage carrier slave machine broadcasts the fault information of the connected feeder line terminal on a 10KV power line.
And 4, step 4: other feeder line terminals on the line monitor fault information through the medium-voltage carrier slave machine, and make a decision by combining all the information to finally judge whether the node is powered off;
and 5: and the medium-voltage carrier host module reports the monitored fault information to the automatic master station.
In the system, the power line carrier machine uses an orthogonal frequency division multiplexing technology below 12MHz to transmit and receive signals.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.

Claims (6)

1. A medium-voltage carrier feeder fault detection system is characterized by comprising a medium-voltage carrier host module, a medium-voltage carrier slave module and a feeder detection terminal module;
the medium-voltage carrier host module is in carrier communication connection with the n medium-voltage carrier slave modules and is in wired network connection with the power master station;
the medium-voltage carrier slave module establishes carrier communication connection with the medium-voltage carrier host module and establishes Ethernet and RS232 serial port communication connection with the feeder terminal;
the feeder terminal and the medium-voltage carrier slave machine are connected through a gigabit Ethernet and an RS232 serial port, and the feeder terminal can carry out remote signaling, remote sensing and remote sensing with the master station through the medium-voltage carrier master and slave machine modules when no fault exists.
2. The system according to claim 1, wherein the medium voltage carrier slave unit broadcasts the fault information of the connected feeder terminal to other slave units, and the other feeder terminals on the line can monitor the fault information through the connected medium voltage carrier slave unit, so that a decision is made by combining all the information, and finally, whether the node is powered off is determined.
3. A medium voltage carrier feeder fault detection system as claimed in claim 1 wherein modules within the system can perform feeder fault detection without communicating with the master station and report processing and results to the distribution automation master station.
4. The system of claim 1, wherein the medium voltage carrier slave unit can relay messages from other slave units to the master unit in a relay manner to increase communication distance.
5. A medium voltage carrier feeder fault detection system as claimed in claim 1 wherein the system operation step comprises:
step 1: the medium-voltage carrier host module, the medium-voltage carrier slave module and the feeder line detection terminal module are correctly installed and establish normal communication;
step 2: the medium-voltage carrier slave module configures the priority through the medium-voltage carrier host module so as to determine the time slot of the slave module, and the time slot sends the reported information of the feeder terminal;
and step 3: and the feeder terminal reports the detected fault information, and the medium-voltage carrier slave machine broadcasts the fault information of the connected feeder terminal on a 10kV power line.
And 4, step 4: other feeder line terminals on the line monitor fault information through the medium-voltage carrier slave machine, and make a decision by combining all the information to finally judge whether the node is powered off;
and 5: and the medium-voltage carrier host module reports the monitored fault information to the automatic master station.
6. A medium voltage carrier feeder fault detection system as claimed in claim 1 wherein the power line carrier machine uses orthogonal frequency division multiplexing below 12MHz for signal transmission and reception.
CN202110106633.0A 2021-01-26 2021-01-26 Medium-voltage carrier feeder fault detection system Withdrawn CN113655331A (en)

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CN202110106633.0A CN113655331A (en) 2021-01-26 2021-01-26 Medium-voltage carrier feeder fault detection system

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Application Number Priority Date Filing Date Title
CN202110106633.0A CN113655331A (en) 2021-01-26 2021-01-26 Medium-voltage carrier feeder fault detection system

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102664466A (en) * 2012-05-23 2012-09-12 浙江省电力试验研究院 Feeder line automation system
CN105059322A (en) * 2015-08-03 2015-11-18 上海铁大电信科技股份有限公司 Section broken rail monitoring system
CN105551223A (en) * 2016-01-29 2016-05-04 青岛鼎信通讯股份有限公司 Concentrated meter-reading terminal uplink communication system based on medium-voltage carrier and wireless communication
CN106603367A (en) * 2017-02-28 2017-04-26 北京艾利特科技有限公司 CAN bus communication method for time synchronization
CN109494715A (en) * 2018-11-13 2019-03-19 国电南瑞南京控制系统有限公司 A kind of low-voltage power distribution station area electrical network topology Dynamic Identification system and method
CN211509044U (en) * 2020-03-21 2020-09-15 青岛鼎信通讯股份有限公司 Medium-voltage line power failure indication transmission system based on medium-voltage carrier communication
CN111884681A (en) * 2020-06-20 2020-11-03 青岛鼎信通讯股份有限公司 Intelligent distributed type rapid FA communication method based on power line carrier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102664466A (en) * 2012-05-23 2012-09-12 浙江省电力试验研究院 Feeder line automation system
CN105059322A (en) * 2015-08-03 2015-11-18 上海铁大电信科技股份有限公司 Section broken rail monitoring system
CN105551223A (en) * 2016-01-29 2016-05-04 青岛鼎信通讯股份有限公司 Concentrated meter-reading terminal uplink communication system based on medium-voltage carrier and wireless communication
CN106603367A (en) * 2017-02-28 2017-04-26 北京艾利特科技有限公司 CAN bus communication method for time synchronization
CN109494715A (en) * 2018-11-13 2019-03-19 国电南瑞南京控制系统有限公司 A kind of low-voltage power distribution station area electrical network topology Dynamic Identification system and method
CN211509044U (en) * 2020-03-21 2020-09-15 青岛鼎信通讯股份有限公司 Medium-voltage line power failure indication transmission system based on medium-voltage carrier communication
CN111884681A (en) * 2020-06-20 2020-11-03 青岛鼎信通讯股份有限公司 Intelligent distributed type rapid FA communication method based on power line carrier

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