CN105721219A - Power line fault indicator with time synchronization function - Google Patents
Power line fault indicator with time synchronization function Download PDFInfo
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- CN105721219A CN105721219A CN201610126655.2A CN201610126655A CN105721219A CN 105721219 A CN105721219 A CN 105721219A CN 201610126655 A CN201610126655 A CN 201610126655A CN 105721219 A CN105721219 A CN 105721219A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
- H04L41/064—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis involving time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a power line fault indicator with a time synchronization function. The power line fault indicator comprises indicating units and a monitoring unit, wherein the monitoring unit is provided with a clock circuit; the indicating units are provided with real-time clock registers; the indicating units transmit acquisition time of measured data or an alarm event to the monitoring unit; the monitoring unit transmits data including current time of the monitoring unit back to the indicating units; the indicating units calculate information transmission time after reception of the data; and the transmission time plus the current time received from the monitoring unit makes current time of the indicating units in order to realize time synchronization between the indicating units and the monitoring unit. Through adoption of the power line fault indicator, data and alarm information of the indicating units and the monitoring unit of the fault indicator is synchronized; a data basis of fault judgement becomes more accurate; and a record of a fault occurrence moment becomes more accurate.
Description
Technical field
The present invention relates to a kind of power line failure indicator.
Background technology
Electric power line fault indicator originates from the Germany of the 1980s, invent it in order that the instruction approach that flows through of power line short-circuit electric current, help people to find trouble point.China starts to introduce the Development Techniques with learning overseas short circuit indicator from the nineties.
Entering 21st century, people begin to focus on the signal is far passed problem of short circuit indicator.After short circuit indicator action, first provide local instruction, then send actuating signal again through high pressure insulation media such as wireless, optical fiber.The realization of the signal is far passed, breaches the sight obstruction of overhead transmission line and cable machinery, extends the viewing distance of people, and is gradually evolved into as fault location system for distribution lines.It combines with SCADA dispatching/generalized information system, can improve work efficiency and the automatic management level of operation power and traffic department.Develop into its actuating signal access dispatching automated system now, will assist in earthing wire-selecting and trouble shoot in conjunction with comprehensive automation system of transformer substation information.
Present fault detector is except realizing " remote signalling " functions such as fault detect, instruction and the signal is far passed, it is also possible to realize " remote measurement " (i.e. signal quantization), " remote control " and " remote regulating " (i.e. parameter adjustment) function.
In " 13 " of China plan, plan puts into 2 trillion yuan for distribution network transform to the year two thousand twenty, and the especially upgrading of rural power grids, substantial amounts of fault detector will be employed, and wherein overhead type fault detector will be emphasis.Because a fault detector is to be made up of the indicating member of a monitoring means and more than 3, adopting radio communication or polymer optical fiber communication between current each indicating member and monitoring means, monitoring means poll indicating member gathers data or indicating member with different channels actively to monitoring means reported data.Indicating member is acquired data by the time of oneself, because each indicating member is asynchronous, the data of A, B, C three-phase collected are also asynchronous, although these data may also be used for analysis grounding and short trouble, but not accurate enough, data more cannot be used for as measure monitor.Such as electricity filching behavior monitoring can contrast by each phase load of primary side and each phase load of secondary side, and fault detector can gather primary side load, but because each phase data is asynchronous, also asynchronous with the data of electric energy meter, it is impossible to contrast.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing power line failure indicator, the present invention provides a kind of power line failure indicator with time synchronized function.
This invention address that the technical scheme of its technical problem is: there is the power line failure indicator of time synchronized function, including indicating member, monitoring means, described monitoring means has clock circuit, described indicating member has real-time clock depositor, and the interruption of the MCU of described real-time clock register pair indicating member carries out accumulating operation thus realizing time clock feature；
The time that acquisition time or the alarm event of measurement data occur is issued monitoring means by described indicating member, is carried out form judgement and whether less than the judgement at the time of making the product after monitoring means receives data the time received, abandon measurement data when the time finding reception is wrong and do not store, the fault time analyzed with the time marking of monitoring means oneself；When the time received is correct, the reception time is stored together with data；
The data including the current time of monitoring means are sent back to indicating member by monitoring means again, after indicating member receives data, according to communication baud rate B and data length L, calculate the information transmission time:
Transmission time (millisecond)=(8 × L)/(B × 1000)
With the transmission time plus the current time received from the monitoring means current time as indicating member, it is achieved the time synchronized of indicating member and monitoring means.
Further, described indicating member has data temporary storage location, when continuous several times communicate with monitoring means unsuccessful after, data are temporarily stored in described data temporary storage location, wait next round data report the moment to pass to monitoring means again.
The beneficial effects of the present invention is: 1. make each indicating member of fault detector Tong Bu with the data of monitoring means and warning information, the data of breakdown judge are according to more accurate, and the record in fault generation moment is more accurate；2. using software to realize, make when not increasing hardware cost equipment have more function 3. to take into account the power issue of fault detector each unit, the realization of function does not increase power consumption substantially；4. each phase load data time of the primary side gathered synchronizes, and the load data that can be used for reading with secondary side carries out contrast and monitors whether there is electricity filching behavior.
Accompanying drawing explanation
Fig. 1 is principles of the invention figure.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Having the power line failure indicator of time synchronized function, including indicating member 2, monitoring means 1, described monitoring means 1 has clock circuit, and power line failure indicator main working process is as follows:
1) indicating member 2 Real-time Collection is to load data, carries out ground connection or analysis of Short Circuit Fault, it has been found that after having ground connection or short trouble, performs board turning instruction action immediately, fault warning information is transferred to monitoring means 1 simultaneously.
2) load data is sent to monitoring means 1 by indicating member 2 regular (general 15 minutes once).
3) monitoring means 1 is communicated with main station system 3 by communication modes such as GPRS/3G/4G/FDDI.Main station system 3 can be called, to 1 data of monitoring means, the timed task surveying instruction or configuration together and be required monitoring means 1 active reporting data.When break down alarm event time, monitoring means 1 also can actively send a warning message to main station system 3.
Described indicating member 2 has real-time clock depositor, and the interruption of the MCU of described real-time clock register pair indicating member 2 carries out accumulating operation thus realizing time clock feature；
The time that acquisition time or the alarm event of measurement data occur is issued monitoring means 1 by described indicating member 2, is carried out form judgement and whether less than the judgement at the time of making the product after monitoring means 1 receives data the time received, abandon measurement data when the time finding reception is wrong and do not store, the fault time analyzed with the time marking of monitoring means 1 oneself；When the time received is correct, the reception time is stored together with data；
The data including the current time of monitoring means are sent back to indicating member 2 by monitoring means 1 again, after indicating member 2 receives data, according to communication baud rate B and data length L, calculate the information transmission time:
Transmission time (millisecond)=(8 × L)/(B × 1000)
With the transmission time plus the current time received from monitoring means 1 current time as indicating member 2, it is achieved the time synchronized of indicating member 2 and monitoring means 1.When powering on first, real-time clock depositor is a wrong time, it is necessary to wait until Tong Bu with monitoring means 1 after, just become the correct time.
The time of indicating member 2 transmission is that moment rather than current time occur data, and after synchronization, the time is very accurate, therefore, when occurring the communication situation such as re-transmission to cause communication delay, the time error of the data that monitoring means 1 receives will not change, the delay that namely do not communicated and produce to affect.It is analyzed by the data of multiple unit synchronizations, will be accurately a lot.Such as calculate three-phase load unbalance degree index.
Indicating member 2 described in the present embodiment has data temporary storage location, when continuous several times communicate with monitoring means 1 unsuccessful after, data are temporarily stored in described data temporary storage location, wait next round data report the moment to pass to monitoring means 1 again.Because generally monitoring means 1 adopts solaode and storage battery power supply, it is likely to night quit work because the energy content of battery is not enough, after resuming work to daytime, indicating member 2 supplements uploads data, because the free information of data record paper of transmission, monitoring means 1 is made to keep the complete of data record.Certainly, because communication disruption, it does not have calibrating in time, the time error of the record filling biography can be relatively large.
Claims (2)
1. there is the power line failure indicator of time synchronized function, including indicating member, monitoring means, described monitoring means has clock circuit, it is characterized in that: described indicating member has real-time clock depositor, and the interruption of the MCU of described real-time clock register pair indicating member carries out accumulating operation thus realizing time clock feature；
The time that acquisition time or the alarm event of measurement data occur is issued monitoring means by described indicating member, is carried out form judgement and whether less than the judgement at the time of making the product after monitoring means receives data the time received, abandon measurement data when the time finding reception is wrong and do not store, the fault time analyzed with the time marking of monitoring means oneself；When the time received is correct, the reception time is stored together with data；
The data including the current time of monitoring means are sent back to indicating member by monitoring means again, after indicating member receives data, according to communication baud rate B and data length L, calculate the information transmission time:
Transmission time (millisecond)=(8 × L)/(B × 1000)
With the transmission time plus the current time received from the monitoring means current time as indicating member, it is achieved the time synchronized of indicating member and monitoring means.
2. there is the power line failure indicator of time synchronized function as claimed in claim 1, it is characterized in that: described indicating member has data temporary storage location, when continuous several times communicate with monitoring means unsuccessful after, data are temporarily stored in described data temporary storage location, wait that next round data report the moment to pass to monitoring means again.
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| CN201610126655.2A CN105721219B (en) | 2016-03-07 | 2016-03-07 | Power line failure indicator with time synchronization function |
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| CN201610126655.2A CN105721219B (en) | 2016-03-07 | 2016-03-07 | Power line failure indicator with time synchronization function |
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| CN105721219B CN105721219B (en) | 2018-09-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108051704A (en) * | 2017-12-14 | 2018-05-18 | 北京煜邦电力技术股份有限公司 | A kind of fault detector and its network-building method |
| CN109298362A (en) * | 2018-09-10 | 2019-02-01 | 国网江苏省电力有限公司电力科学研究院 | A kind of distribution line failure indicator three-phase synchronous method for testing precision, device and system |
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| JP3888910B2 (en) * | 2002-02-26 | 2007-03-07 | リンナイ株式会社 | Gas hot air heater |
| CN101515831A (en) * | 2008-02-22 | 2009-08-26 | 杭州华三通信技术有限公司 | Method, system and device for time synchronous transfer |
| CN103995214A (en) * | 2014-04-15 | 2014-08-20 | 刘骐畅 | Overhead line intelligent fault positioning processing system and method thereof |
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2016
- 2016-03-07 CN CN201610126655.2A patent/CN105721219B/en active Active
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| JP3888910B2 (en) * | 2002-02-26 | 2007-03-07 | リンナイ株式会社 | Gas hot air heater |
| CN101515831A (en) * | 2008-02-22 | 2009-08-26 | 杭州华三通信技术有限公司 | Method, system and device for time synchronous transfer |
| CN103995214A (en) * | 2014-04-15 | 2014-08-20 | 刘骐畅 | Overhead line intelligent fault positioning processing system and method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051704A (en) * | 2017-12-14 | 2018-05-18 | 北京煜邦电力技术股份有限公司 | A kind of fault detector and its network-building method |
| CN109298362A (en) * | 2018-09-10 | 2019-02-01 | 国网江苏省电力有限公司电力科学研究院 | A kind of distribution line failure indicator three-phase synchronous method for testing precision, device and system |
| CN109298362B (en) * | 2018-09-10 | 2020-10-16 | 国网江苏省电力有限公司电力科学研究院 | Three-phase synchronization precision testing method, device and system for distribution line fault indicator |
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| CN105721219B (en) | 2018-09-07 |
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