CN202305731U - Device integrating travelling wave distance measuring and fault wave recording - Google Patents
Device integrating travelling wave distance measuring and fault wave recording Download PDFInfo
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- CN202305731U CN202305731U CN2011204228269U CN201120422826U CN202305731U CN 202305731 U CN202305731 U CN 202305731U CN 2011204228269 U CN2011204228269 U CN 2011204228269U CN 201120422826 U CN201120422826 U CN 201120422826U CN 202305731 U CN202305731 U CN 202305731U
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Abstract
The utility model relates to a device integrating travelling wave distance measuring and fault wave recording, which comprises a voltage transmitter and a current transmitter and further comprises a wave recording access plug-in connector, a digital signal processor (DSP) plug-in connector, a travelling wave plug-in connector and a central processing unit (CPU) plug-in connector. An analog-to-digital converter and an optical coupler are arranged in the wave recording access plug-in connector which is used for converting input analog quantity voltage signals and analog quantity current signals into digital quantity signals through the analog-to-digital converter and transmitting the signals and switching quantity signals received by the optical coupler to the DSP plug-in connector. The travelling wave plug-in connector and the DSP plug-in connector are respectively connected with the CPU plug-in connector which conducts travelling wave analysis. The device integrates functions of a fault wave recording device and a travelling wave distance measuring device in one device, comprehensively analyzes the distance measuring results of the travelling wave distance measuring device and the wave recording device to obtain the optimum distance measuring result, improve correctness and accuracy of location of fault points of a power transmission line and shorten fault searching and maintaining time.
Description
Technical field
The utility model relates to a kind of electrical power system transient failure recording device, is applicable to the failure logging and accurate fault localization of electric system high voltage transmission line, more particularly, relates to the incorporate device of a kind of travelling wave ranging and failure wave-recording.
Background technology
At present, the fault wave recording device in the electric system all has the fault localization function, normally adopts impedance principle.It is a variety of to adopt the fault distance-finding method of impedance principle to have, such as impedance method, analytic approach, adopt lumped parameter model, adopt distributed parameter model or the like.But in actual use, these adopt the location algorithm of impedance principles, trouble spot transition resistance, line impedance parameter, even the transimpedance that produces of other pole lines or the like factor all produces its range error and has a strong impact on.Therefore, in reality, have only metallic short circuit, and the length of pole line just can obtain more satisfactory precision below 100km.
See that from principle travelling wave ranging is compared the influence of factors such as receiving transition resistance, circuit asymmetry, other pole lines hardly with impedance class algorithm, precision is superior to impedance method.But there are the problems such as identification of reflection wave, fault traveling wave and action row ripple in the row ripple, therefore, in actual the use, the problem of travelling wave ranging device ubiquity wrong report fault.Simultaneously, for both-end travelling wave ranging device, the error of two ends time synchronized influences distance measuring precision greatly, and is therefore, reliable not as the single-ended traveling wave distance measuring equipment on the contrary in actual the use.And single-ended traveling wave range finding near terminal fault, because incident wave and radioactive wave is overlapping, is difficult to the perception reflex ripple, cause near terminal fault can't find range or error very big, and near terminal fault just is the higher zone of impedance principle location algorithm precision.
The utility model content
The utility model technical matters to be solved provides a kind of travelling wave ranging and the incorporate device of failure wave-recording; In the function of the inner integrated fault wave recording device of unitary device and the function of travelling wave ranging device; And the range finding result of analysis-by-synthesis travelling wave ranging device and wave recording device, draw optimum range finding result, improve the accuracy and the precision of failure point of power transmission line location; Shorten the fault line inspection and fault correction time, to overcome the deficiency that exists in the prior art.
The technical scheme that the utility model solves the problems of the technologies described above is following: the incorporate device of a kind of travelling wave ranging and failure wave-recording, comprise voltage transmitter, current transducer, and comprise that also the record ripple inserts plug-in unit, DSP plug-in unit, row ripple plug-in unit and CPU card; Said record ripple inserts in the plug-in unit and is provided with analog to digital converter and optocoupler, is used for the analog quantity voltage signal of importing, analog quantity current signal after analog to digital converter converts digital quantity signal to, and the switching value signal that receives with optocoupler is sent to the DSP plug-in unit; Said capable ripple plug-in unit comprises high-speed AD converter, and row ripple plug-in unit is connected with said CPU card with said DSP plug-in unit respectively, carries out travelling wave analysis by CPU card.
The beneficial effect of the utility model is: the invention solves the precision problem of the impedance principle location algorithm of the independently fault wave recording device that the ultra-high-tension power transmission line fault localization exists, problem that independently the reflection wave identification problem that exists of travelling wave ranging device and near region can't the perception reflex ripples.Described travelling wave ranging and failure wave-recording integrated apparatus have reduced the relay protection of power system investment of devices; And help circuit operation maintenance personnel and search the trouble spot accurately and rapidly; Shorten the time of fault restoration greatly, reduce the loss that causes because of power failure, improve power supply quality.
On the basis of technique scheme, the utility model can also be done following improvement.
Further; Said current transducer is the current transducer of two-way output; Be used for the current signal of input is transformed into the voltage signal of two-way parallel connection output, and the two-way voltage signal of said output be delivered to respectively said record ripple inserts the said analog to digital converter of plug-in unit and the said high-speed AD converter of said capable ripple plug-in unit is sampled.
Adopt the beneficial effect of above-mentioned further scheme to be, the mode of connection of whole table apparatus and independent wave recording device are just the same, and having avoided independently, the travelling wave ranging device also need seal in the secondary connection complicacy that current return causes.
Further, be provided with a FPGA and a DSP in the said DSP plug-in unit, a FPGA controls said analog to digital converter synchronized sampling, and the sampled data of analog to digital converter is sent to a DSP.
Further, a said DSP adopts 32 Floating-point DSP, is used to record the transmission of calculating, the control of record wave process and/or the recorder data of ripple start-up criterion.
Further, said record ripple start-up criterion comprises that voltage/current sudden change amount starts, the out-of-limit amount of voltage/current starts, voltage/current preface amount starts, the switching value displacement starts.
Further; Said capable ripple plug-in unit also comprises the 2nd FGPA, the 2nd DSP; The 2nd FPGA controls said high-speed AD converter and carries out high-speed sampling, and sampled data is sent to the 2nd DSP through high-speed channel, and the 2nd DSP is saved in the high sampling rate data that receive among the RAM; Simultaneously this high sampling rate sampling of data is saved in independently low sampling rate buffer zone; The 2nd DSP utilizes the low sampling rate data to carry out the calculating of start-up criterion, and writes down the high sampling rate data that satisfy the start-up criterion algorithm, and these high sampling rate data are sent to CPU card.
Further, described high sampling rate is 1MHz, is 1KHz to the sampling rate of these high sampling rate data.
Further, the low sampling rate buffer zone is 256.
Adopt the beneficial effect of above-mentioned further scheme to be, row ripple sampling rate is high, and data volume is very big, can pass to CPU reliably for guaranteeing row ripple data recorded, and be unlikely to be capped very soon and the high sampling rate The data 256 buffer zones.When start-up criterion did not satisfy, the covering that in a buffer zone, circulates of high sampling rate data after criterion satisfies, switched to next buffer zone after write down brimful preceding buffer zone.During filling up this buffer zone, no longer do start-up criterion and calculate.When next buffer zone, be that start-up criterion does not satisfy then circulation covering in this buffer zone equally.So repeatedly, 256 high sampling rate buffer zones recycle.
Description of drawings
Fig. 1 is the utility model inner structure synoptic diagram;
Embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
As shown in Figure 1, described travelling wave ranging of the utility model embodiment and the incorporate device of failure wave-recording comprise that voltage transmitter, current transducer, record ripple insert plug-in unit, DSP plug-in unit, row ripple plug-in unit and CPU card; Said record ripple inserts in the plug-in unit and is provided with modulus converter A/D and optocoupler, is used for the analog quantity voltage signal of importing, analog quantity current signal after A/D converts digital quantity signal to, and the switching value signal that receives with optocoupler is sent to the DSP plug-in unit; Said capable ripple plug-in unit comprises high-speed AD converter, and row ripple plug-in unit is connected with said CPU card with said DSP plug-in unit respectively, carries out travelling wave analysis by CPU card.
Said current transducer is the current transducer of two-way output; Be used for the current signal of input is transformed into the voltage signal of two-way parallel connection output, and the two-way voltage signal of said output be delivered to respectively said record ripple inserts the A/D of plug-in unit and the said high-speed AD converter of said capable ripple plug-in unit is sampled.
Be provided with a FPGA and a DSP in the said DSP plug-in unit, a FPGA controls said analog to digital converter synchronized sampling, and the sampled data of analog to digital converter is sent to a DSP.A said DSP adopts 32 Floating-point DSP, is used to record the transmission of calculating, the control of record wave process and/or the recorder data of ripple start-up criterion.
Said record ripple start-up criterion comprises that voltage/current sudden change amount starts, the out-of-limit amount of voltage/current starts, voltage/current preface amount starts, the switching value displacement starts.
Said capable ripple plug-in unit also comprises the 2nd FGPA, the 2nd DSP; The 2nd FPGA controls said high-speed AD converter and carries out high-speed sampling; Described high sampling rate is 1MHz; The 2nd FPGA is sent to the 2nd DSP with sampled data through the LinkPort high-speed channel, and the 2nd DSP adopts 32 high-speed floating point DSP, and the 1MHz high sampling rate data of all passages that the 2nd DSP will receive are saved among the RAM; Be that 1KHz is saved in independently low sampling rate buffer zone with this high sampling rate sampling of data simultaneously; The 2nd DSP utilizes the low sampling rate data to carry out the calculating of start-up criterion, and writes down the high sampling rate data that satisfy the start-up criterion algorithm, and these high sampling rate data are sent to CPU card.
Because row ripple sampling rate is high, data volume is very big, can pass to CPU reliably for guaranteeing row ripple data recorded, and be unlikely to be capped very soon.The high sampling rate The data 256 buffer zones, when start-up criterion did not satisfy, the covering that in a buffer zone, circulates of high sampling rate data after criterion satisfies, switched to next buffer zone after write down brimful preceding buffer zone.During filling up this buffer zone, no longer do start-up criterion and calculate.When next buffer zone, be that start-up criterion does not satisfy then circulation covering in this buffer zone equally.So repeatedly, 256 high sampling rate buffer zones recycle.
For improving the accuracy of fault analysis, the result who the fault of impedance principle is declared phase, fault localization and traveling wave fault location according to following principle carries out overall treatment:
1), then thinks the non-fault circuit if in the identical time failure wave-recording is arranged but go ripple record ripple;
2) if capable ripple record ripple was arranged in the identical time but do not have failure wave-recording, then think to disturb capable ripple to start the non-fault circuit;
3), then think the non-fault circuit if it is non-fault that the fault of failure wave-recording is declared the phase result;
4) can't analyze incident row ripple and reflected traveling wave wave head time if failure wave-recording is near terminal fault and row ripple record ripple, then think near terminal fault, adopt impedance range finding result in the Trouble Report;
5) if failure wave-recording is that near terminal fault and row ripple record ripple range finding result are little with the failure wave-recording difference, both find range mean values of result of employing in the Trouble Report then;
6) otherwise, the result of travelling wave ranging is adopted in Trouble Report.
Leading indicator
A) input signal
1) record ripple plug-in unit maximum can insert 80 tunnel analog quantitys and 160 way switch amounts;
2) going ripple plug-in unit maximum can insert 12 road current signals (4 bar line);
3) go ripple and record ripple plug-in unit common current transmitter.
B) performance index
1) the high sampling rate of recorder data is 10kHz;
2) going the wave datum sampling rate is 1MHz;
3) 25 ℃ the time, the electric current under the ratings, voltage waveform sampling precision be superior to ± and 0.3%;
4) 25 ℃ the time, each the road voltage under the ratings, the effective value measuring relative errors between the electric current are less than ± 0.5%;
5) active power, reactive power, apparent power measurement error be no more than ± 0.5%;
6) each road alternating voltage, alternating current phase measurement error≤1 each other of device °;
7) temperature is no more than full-scale ± 1.0% from-20 ℃ of errors that cause to 60 ℃ of variations;
8) adopt the drift adaptive technique.
C) communication interface and stipulations
1) 4 network interfaces are provided, are chosen as 4 electricity mouths, or 3 electric 1 light;
2) electric Ethernet interface is a 10/100Mb self-adaptation RJ45 interface;
3) luminiferous ether network interface speed is 100Mb, can select single mode or multimode optical fiber, and interface is SC or ST;
4) support IEC61850-8 MMS communication protocol, 8 clients of maximum permission;
5) support ICP/IP protocol and 103 stipulations, 16 clients of the maximum permission of 103 stipulations.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
1. travelling wave ranging and the incorporate device of failure wave-recording comprise voltage transmitter, current transducer, it is characterized in that, comprise that also the record ripple inserts plug-in unit, DSP plug-in unit, row ripple plug-in unit and CPU card; Said record ripple inserts in the plug-in unit and is provided with analog to digital converter and optocoupler, is used for the analog quantity voltage signal of importing, analog quantity current signal after analog to digital converter converts digital quantity signal to, and the switching value signal that receives with optocoupler is sent to the DSP plug-in unit; Said capable ripple plug-in unit comprises high-speed AD converter, and row ripple plug-in unit is connected with said CPU card with said DSP plug-in unit respectively, carries out travelling wave analysis by CPU card.
2. travelling wave ranging according to claim 1 and the incorporate device of failure wave-recording; It is characterized in that; Said current transducer is the current transducer of two-way output; Be used for the current signal of input is transformed into the voltage signal of two-way parallel connection output, and the two-way voltage signal of said output be delivered to respectively said record ripple inserts the said analog to digital converter of plug-in unit and the said high-speed AD converter of said capable ripple plug-in unit is sampled.
3. travelling wave ranging according to claim 1 and the incorporate device of failure wave-recording; It is characterized in that; Be provided with a FPGA and a DSP in the said DSP plug-in unit, a FPGA controls said analog to digital converter synchronized sampling, and the sampled data of analog to digital converter is sent to a DSP.
4. travelling wave ranging according to claim 3 and the incorporate device of failure wave-recording is characterized in that, a said DSP adopts 32 Floating-point DSP, are used to record the transmission of calculating, the control of record wave process and/or the recorder data of ripple start-up criterion.
5. travelling wave ranging according to claim 4 and the incorporate device of failure wave-recording; It is characterized in that said record ripple start-up criterion comprises that voltage/current sudden change amount starts, the out-of-limit amount of voltage/current starts, voltage/current preface amount starts, the switching value displacement starts.
6. travelling wave ranging according to claim 1 and the incorporate device of failure wave-recording; It is characterized in that said capable ripple plug-in unit also comprises the 2nd FGPA, the 2nd DSP, the 2nd FPGA controls said high-speed AD converter and carries out high-speed sampling; And sampled data is sent to the 2nd DSP through high-speed channel; The 2nd DSP is saved in the high sampling rate data that receive among the RAM, simultaneously this high sampling rate sampling of data is saved in independently low sampling rate buffer zone, and the 2nd DSP utilizes the low sampling rate data to carry out the calculating of start-up criterion; And write down the high sampling rate data that satisfy the start-up criterion algorithm, and these high sampling rate data are sent to CPU card.
7. travelling wave ranging according to claim 6 and the incorporate device of failure wave-recording is characterized in that high sampling rate is 1MHz, are 1KHz to the sampling rate of these high sampling rate data.
8. travelling wave ranging according to claim 6 and the incorporate device of failure wave-recording is characterized in that the low sampling rate buffer zone is 256.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204228269U CN202305731U (en) | 2011-10-31 | 2011-10-31 | Device integrating travelling wave distance measuring and fault wave recording |
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| CN2011204228269U CN202305731U (en) | 2011-10-31 | 2011-10-31 | Device integrating travelling wave distance measuring and fault wave recording |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102759675A (en) * | 2012-07-27 | 2012-10-31 | 深圳市中电软件有限公司 | On-line electric energy quality monitoring device |
| CN102880523A (en) * | 2012-10-10 | 2013-01-16 | 北京和利时系统工程有限公司 | Watchdog circuit and failure monitoring method for same |
| CN102928737A (en) * | 2012-11-01 | 2013-02-13 | 航天科工深圳（集团）有限公司 | Fault detection system and method |
| CN102967799A (en) * | 2012-11-29 | 2013-03-13 | 深圳市双合电气股份有限公司 | Comprehensive fault distance measuring method for electric power system |
| CN103163426A (en) * | 2013-02-25 | 2013-06-19 | 武汉中元华电科技股份有限公司 | Fault recorder utilizing travelling wave fault location algorithm |
| CN103399258A (en) * | 2013-08-09 | 2013-11-20 | 安徽继远电网技术有限责任公司 | Traveling wave fault location front-end analog acquisition board based on high-precision Hall effect |
| CN104237743A (en) * | 2014-10-16 | 2014-12-24 | 唐山三友集团兴达化纤有限公司 | Portable line fault monitoring/analyzing recorder |
| CN106093700A (en) * | 2016-06-01 | 2016-11-09 | 武汉中元华电科技股份有限公司 | A kind of fault wave recording device based on voltage traveling wave principle and distance-finding method |
| CN106526421A (en) * | 2016-11-09 | 2017-03-22 | 中国南方电网有限责任公司 | Method for adding current traveling wave signal acquisition to transmission line matching device |
| CN107703419A (en) * | 2017-09-18 | 2018-02-16 | 云南电网有限责任公司 | A kind of transient state record analysis and failure accurate positioning device and method |
| CN111812433A (en) * | 2020-06-24 | 2020-10-23 | 清科优能(深圳)技术有限公司 | Safety event wave recording method, equipment and system |
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2011
- 2011-10-31 CN CN2011204228269U patent/CN202305731U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759675A (en) * | 2012-07-27 | 2012-10-31 | 深圳市中电软件有限公司 | On-line electric energy quality monitoring device |
| CN102759675B (en) * | 2012-07-27 | 2015-04-01 | 深圳市中电软件有限公司 | On-line electric energy quality monitoring device |
| CN102880523A (en) * | 2012-10-10 | 2013-01-16 | 北京和利时系统工程有限公司 | Watchdog circuit and failure monitoring method for same |
| CN102880523B (en) * | 2012-10-10 | 2015-03-11 | 北京和利时系统工程有限公司 | Watchdog circuit and failure monitoring method for same |
| CN102928737A (en) * | 2012-11-01 | 2013-02-13 | 航天科工深圳（集团）有限公司 | Fault detection system and method |
| CN102967799B (en) * | 2012-11-29 | 2015-02-25 | 深圳市双合电气股份有限公司 | Comprehensive fault distance measuring method for electric power system |
| CN102967799A (en) * | 2012-11-29 | 2013-03-13 | 深圳市双合电气股份有限公司 | Comprehensive fault distance measuring method for electric power system |
| CN103163426A (en) * | 2013-02-25 | 2013-06-19 | 武汉中元华电科技股份有限公司 | Fault recorder utilizing travelling wave fault location algorithm |
| CN103399258A (en) * | 2013-08-09 | 2013-11-20 | 安徽继远电网技术有限责任公司 | Traveling wave fault location front-end analog acquisition board based on high-precision Hall effect |
| CN104237743A (en) * | 2014-10-16 | 2014-12-24 | 唐山三友集团兴达化纤有限公司 | Portable line fault monitoring/analyzing recorder |
| CN106093700A (en) * | 2016-06-01 | 2016-11-09 | 武汉中元华电科技股份有限公司 | A kind of fault wave recording device based on voltage traveling wave principle and distance-finding method |
| CN106093700B (en) * | 2016-06-01 | 2018-12-25 | 武汉中元华电科技股份有限公司 | A kind of fault wave recording device and distance measuring method based on voltage traveling wave principle |
| CN106526421A (en) * | 2016-11-09 | 2017-03-22 | 中国南方电网有限责任公司 | Method for adding current traveling wave signal acquisition to transmission line matching device |
| CN107703419A (en) * | 2017-09-18 | 2018-02-16 | 云南电网有限责任公司 | A kind of transient state record analysis and failure accurate positioning device and method |
| CN111812433A (en) * | 2020-06-24 | 2020-10-23 | 清科优能(深圳)技术有限公司 | Safety event wave recording method, equipment and system |
| CN111812433B (en) * | 2020-06-24 | 2022-08-05 | 清科优能(深圳)技术有限公司 | Safety event wave recording method, equipment and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20181031 |