CN204154853U - A kind of distribution intelligent trouble indicator reducing false alarm - Google Patents
A kind of distribution intelligent trouble indicator reducing false alarm Download PDFInfo
- Publication number
- CN204154853U CN204154853U CN201420678153.7U CN201420678153U CN204154853U CN 204154853 U CN204154853 U CN 204154853U CN 201420678153 U CN201420678153 U CN 201420678153U CN 204154853 U CN204154853 U CN 204154853U
- Authority
- CN
- China
- Prior art keywords
- module
- voltage
- signal
- current
- flush bonding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005070 sampling Methods 0.000 claims abstract description 48
- 230000001052 transient effect Effects 0.000 claims abstract description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000000052 comparative effect Effects 0.000 claims abstract description 5
- 238000012546 transfer Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 description 10
- 238000004804 winding Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000035772 mutation Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a kind of distribution intelligent trouble indicator reducing false alarm, comprise online electricity-fetching module, online electricity-fetching module is connected with power management module, power management module is connected with lithium battery, power management module and lithium battery form supply module, supply module is connected with flush bonding processor MCU, flush bonding processor MCU reads transient current sampling module signal, instruction is sent to board turning photoelectric alarm, and by communication module, failure message is sent to management host, also comprise voltage sampling module and voltage comparator, described voltage sampling module Real-time Obtaining line voltage value, and pass through magnitude of voltage and the preset voltage value size of the acquisition of voltage comparator comparative voltage sampling module, and the signal is relatively sent to flush bonding processor MCU, after the transient current signal that transient current sampling module obtains by flush bonding processor MCU and the signal that voltage comparator sends and preset value compare, again board turning photoelectric alarm is sent in instruction.The utility model is with low cost, reduce false alarm operation, effectively judge Distribution Network Failure type, and be configured action parameter according to circuit practical application also can in time by the distribution intelligent trouble indicator of fault information reporting.
Description
Technical field
The utility model belongs to the checkout equipment technical field that distribution network line breaks down, and is specifically related to a kind ofly can reduce false alarm and quick indicator trouble spot being positioned to the Distribution Network Failure type indicated with intelligence.
Background technology
User contacted directly by power distribution network, and its reliable power supply capacity and power supply quality are the direct embodiment of electric power enterprise economic benefit, have again immeasurable social benefit.Distribution system is because branch line is many and complicated, when being short-circuited fault, generally only outlet breaker tripping operation, even if by switch-segment on backbone, also can only isolate limited several sections, concrete abort situation be found out and often need at substantial human and material resources and time.At present, in order to address this problem, patent publication No. is that the power distribution network digital fault indicator of 202661572U proposes a kind of solution, when distribution network line breaks down, can position and instruction its trouble spot fast.This device completes the judgement to distribution network line fault to parameters such as the Sudden Changing Rates by current break time and electric field mutation time and electric current and battery.But we in use find, when running into inclement weather, these three parameters of Sudden Changing Rate only investigating current break time and electric field mutation time and electric current and battery are easy to the false alarm causing circuit, even cause unnecessary circuit and to operate a switch operation.Especially, when thunderstorm weather, when lightning hits power circuit, very greatly, the current break of line transient and electric field suddenly change and often cause this device false alarm for the electric current of circuit and electric field fluctuation; And when occurring frequent in mist season or haze; particle in fog or haze can adsorb on the line, especially at line joint place, causes line resistance to occur abnormal; cause circuit arcing to puncture, the transient current of circuit and electric field are undergone mutation and the false alarm of flip flop equipment.Simultaneously patent publication No. is that the power distribution network digital fault indicator of 202661572U can only carry out localization of fault and can not judge short trouble or open circuit fault.
Summary of the invention
The purpose of this utility model be to provide a kind of with low cost, reduce false alarm operation, effectively judge Distribution Network Failure type, and be configured action parameter according to circuit practical application also can in time by the distribution intelligent trouble indicator of fault information reporting.
The technical solution adopted in the utility model is as follows:
A kind of distribution intelligent trouble indicator reducing false alarm, comprise online electricity-fetching module, online electricity-fetching module is connected with power management module, power management module is connected with lithium battery, power management module and lithium battery form supply module, supply module is connected with flush bonding processor MCU, flush bonding processor MCU reads transient current sampling module signal, instruction is sent to board turning photoelectric alarm, and by communication module, failure message is sent to management host, it is characterized in that, also comprise voltage sampling module and voltage comparator, described voltage sampling module Real-time Obtaining line voltage value, and pass through magnitude of voltage and the preset voltage value size of the acquisition of voltage comparator comparative voltage sampling module, and the signal is relatively sent to flush bonding processor MCU, after the transient current signal that transient current sampling module obtains by flush bonding processor MCU and the signal that voltage comparator sends and preset value compare, again board turning photoelectric alarm is sent in instruction.
In order to obtain better technique effect, also have current sampling module and current comparator, described current sampling module Real-time Obtaining line electricity flow valuve, described current comparator compares current value and the pre-set current value size of current sampling module acquisition, and the signal is relatively sent to flush bonding processor MCU, after the transient current signal that transient current sampling module obtains by flush bonding processor MCU and the signal that voltage comparator, current comparator send and preset value compare, then board turning photoelectric alarm is sent in instruction;
Described voltage comparator adopt LM324, LM358, uA741, TL081 234, one in OP07, OP27, LM339, LM393;
Described current comparator is a resistance of connecting at alternative route, transfer electric current to be detected to voltage to be detected, described voltage comparator is used to measure the voltage at described resistance two ends, again the magnitude of voltage detected and pre-set current value and described resistance product are compared, and the signal is relatively sent to flush bonding processor MCU;
Described supply module comprises line electricity-fetching module, power management module and lithium battery, and online electricity-fetching module is connected with power management module, and power management module is connected with lithium battery;
Described online electricity-fetching module is the electricity getting device utilizing the electromagnetic energy responded to around ultra-high-tension power transmission line to obtain electric energy induction;
Also have communication module and management host, the transient current sampling module signal that flush bonding processor MCU reads by communication module and the electric current comparison signal that the voltage comparison signal that the instruction sent, voltage comparator send, current comparator send transfer to management host, and the supervisory signal that receiving management main frame sends transfers to flush bonding processor MCU, the voltage preset value that receiving management main frame sends, electric current preset value transfer to voltage comparator and current comparator respectively;
Described communication module adopts the UHF transceiver of CC1100;
Described power management module adopts chip LTC1625 control and management;
Described flush bonding processor MCU adopts MSP430F14X single-chip microcomputer.
The utility model power distribution network intelligent trouble indicator system, its beneficial effect shows:
1, inductive pickup coils detection of electromagnetic fields radiation intensity is adopted, then electric field intensity is drawn by flush bonding processor MCU operational analysis, add the electrical field test over the ground to circuit, complete the judgement to distribution network line fault by important parameters such as the Sudden Changing Rates of current break time and electric field mutation time and electric current and electric field; The simultaneously voltage of detection line and/or electric current, by judging comparing of voltage and/or electric current and preset value, judging whether circuit is reported by mistake, judging line fault type.
2, the current parameters that the voltage parameter preset by action parameter and the voltage comparator of management host remote setting every fault detector according to different circuit actual conditions, current comparator are preset, to improve the accuracy of breakdown judge and location.
3, when judge break down time, the very first time by modes such as wireless and/or GPRS by trouble spot information reporting to administrative center, make monitor staff know the position of fault by the management host very first time, from shortening the looking up the fault time at all.
4, when power network line electric current is less than 5A time, backup battery is used to power, depart from back-up source when power network line is greater than 10A, and to back-up source charging, reach online power taking object by electricity-fetching module, be do not need backup battery under normal circumstances, thus improve its serviceable life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit diagram of the transient current sampling module of the utility model;
Fig. 3 is the peak shape current waveform of the utility model;
Fig. 4 is the paddy shape current waveform of the utility model;
Fig. 5 is the peak valley shape current waveform of the utility model;
Fig. 6 is the cliff of displacement formula current waveform of the utility model.
Embodiment
Utility model to be further described below in conjunction with accompanying drawing for the ease of it will be appreciated by those skilled in the art that.
A kind of distribution intelligent trouble indicator reducing false alarm, comprise supply module, transient current sampling module, flush bonding processor MCU and board turning photoelectric alarm module, supply module is connected with flush bonding processor MCU, flush bonding processor MCU reads transient current sampling module signal, instruction is sent to board turning photoelectric alarm module, and by communication module, failure message is sent to management host; Also comprise voltage sampling module and voltage comparator, described voltage comparator be with LM324, LM358, uA741, TL081 234, one in OP07, OP27, LM339, LM393; Described voltage sampling module is commercially available passive alternating voltage combination sampling thief, described voltage sampling module Real-time Obtaining line voltage value, and pass through magnitude of voltage and the preset voltage value size of the acquisition of voltage comparator comparative voltage sampling module, and the signal is relatively sent to flush bonding processor MCU, after the transient current signal that transient current sampling module obtains by flush bonding processor MCU and the signal that voltage comparator sends and preset value compare, then board turning photoelectric alarm is sent in instruction; Also have current sampling module and current comparator, described current sampling module is made up of mutual inductor, mutual inductor secondary side winding and circuit, from the utility model transient current sampling module, directly obtain current value; Described current sampling module Real-time Obtaining line electricity flow valuve, described current comparator compares current value and the pre-set current value size of current sampling module acquisition, and the signal is relatively sent to flush bonding processor MCU, after the transient current signal that transient current sampling module obtains by flush bonding processor MCU and the signal that voltage comparator, current comparator send and preset value compare, then board turning photoelectric alarm is sent in instruction.
Wherein, each functions of modules is as follows:
Supply module comprises line electricity-fetching module, power management module and lithium battery, online electricity-fetching module is connected with power management module, power management module is connected with lithium battery, online electricity-fetching module utilizes the electromagnetic energy responded to around ultra-high-tension power transmission line to obtain electric energy induction electricity getting device, provides reliable power supply supply for whole system normally uses; Power management module adopts synchronous buck stabilized switch controller chip LTC1625, and it is connected with external power N channel MOSFET, and the Controlled in Current Mode and Based of the source-drain voltage detection of MOSFET, decreases a detection resistor; The pressure that the source-drain voltage of MOSFET detects controls continuous mode and the inactive burst mode operation of pin assistance, realizes Secondary Winding and regulates, for folding send current limit and output overvoltage comparer to provide emergency protection when main output underloading.The RUN/SS pin of LTC1625 is connected to an external capacitor provides soft start, for power supply sequencing ability, controls equipment set rational utilization of electricity, thus reaches lowest power consumption management.
Flush bonding processor MCU adopts MSP430F14X single-chip microcomputer, catches the simulating signal of sensor and is sent to main frame after being processed.
Transient current sampling module: be made up of mutual inductor, mutual inductor secondary side winding and circuit, electric current on Real-time Collection circuit, to earth electric field, cable temperature information, accompanying drawing 2 is shown in by circuit diagram, mutual inductor secondary side winding connects half-wave voltage doubler, after connect power management module and give lithium ion cell charging.When being in floating charge state, lithium ion battery converts chip through high efficiency dc-to-dc, exports the power supply that 3.3V voltage is distribution intelligent trouble indicator.Be connected on after mutual inductor secondary side winding with 0.2 Ohmage and sample, be voltage signal by mutual inductor secondary side winding circuit conversion, waveform is identical with electric current, and sampled signal obtains three road signals through process and exports, and carries out AD conversion for single-chip microcomputer.
1, conventional current signal IL
This road is the signal of load current on reflection line, and this road signal only passes through low-pass filter, retains first-harmonic, decay higher hamonic wave, is then amplified to suitable amplitude and moves to the reference voltage half place of AD and 1.25V for AD sampling.Choosing of amplification coefficient is arranged according to 3000 samplings of electric current 600A corresponding A D on line, closes 1831mV peak-to-peak value and exports.Current resolution is 0.2A, why do not use up whole dynamic ranges 4096 of AD, because the consistance considering the ER effect ratio of mutual inductor is not fine, in order to avoid system uses the element having mechanical contact of adjustable resistance and so on line, and the work of coefficients match has been given Single Chip Microcomputer (SCM) system, therefore must leave enough adjustment surpluses to adapt to the parameter differences of mutual inductor.Be such from the principle of IL signal calculating current, owing to must have a maximal value and a minimum value in one-period, 40 points of therefore often sampling just search the maxima and minima in data, and both differences are exactly the peak-to-valley value of electric current.The data collected can be transformed into corresponding current value according to the corresponding relation between aforementioned peak-to-valley value current effective value by upper management host.Linear relationship on line between electric current and sampled value on line system reserves some can Remote configuration parameter correction.
2, excess current signal IT1
When electric current on line is more than 600A, current sample will be switched to IT1 from IL.Amplification coefficient is chosen and is arranged according to 3000 samplings of electric current 3000A corresponding A D on line.Current resolution is 1A, identical with the principle of conventional current signal IL from the principle of IT1 signal calculating current.What the linear relationship on line between electric current and sampled value was also reserved by inline system somely can Remote configuration revise.
3, transient current signal IZT
This road signal is the result of carrying out after high-pass filtering to sampled signal.For one of condition judging earth fault, when there is earth fault in this signal basic no-output when there is not earth fault, because flame current waveform harmonics is enriched, will react by IZT signal, because 7 subfrequencies are higher, in every 3 milliseconds, have a maximal value and a minimum value at least.The judgement of a maxima and minima is just carried out in every 40 samplings above, requires that every 6 samplings just once judge for IZT.
Communication module: adopt the UHF transceiver of CC1100, main circuit will be set as, 315,433,868 and the ISM of 915MHz and short-range device SRD frequency band, also can being set to other frequencies of 300-348MHz, 400-464MHz and 800-928MHz.CC1100 is processing data packets, data buffering, burst transfers of data, clear channel estimating, quality of connection instruction and electromagnetic wave excites hardware supported is widely provided.
Board turning photoelectric alarm module: the device being used to indicate fault current circulation.Once line failure, track walker by the alarm indication of indicator, can determine fault section rapidly, finds out trouble spot, fix a breakdown.
When flush bonding processor MCU gets the transient current signal IZT of transient current sampling module acquisition, trigger voltage comparer and current comparator, the voltage signal that comparative voltage sampler obtains and preset voltage value, compare current signal and the pre-set current value of current sampler acquisition;
When obtaining transient current signal IZT, and the voltage signal that voltage sampler obtains is greater than preset voltage value, and the current signal that current sampler obtains also is greater than preset value, and be judged as false alarm, circuit does not break down; When acquisition transient current signal IZT is peak shape waveform, judge that circuit may be struck by lightning or fog starting arc causes circuit extremely, prompting needs to patrol and examine circuit and changes the equipment being struck by lightning or being subject to arc through in time, and circuit is still running; When acquisition transient current signal IZT is paddy shape waveform, judge that circuit may suffer haze to cause line resistance to increase, prompting needs cleaning circuit dirt, and circuit is still in operation.
When obtaining transient current signal IZT, and the voltage signal that voltage sampler obtains is less than preset voltage value, and the current signal that current sampler obtains also is less than preset value, and be judged as correct warning, line failure, circuit is out of service; When acquisition transient current signal IZT is peak valley shape waveform, judge that line to line fault may occur circuit abnormal, prompting needs to carry out short-circuit device maintenance, and circuit is out of service, sends alerting signal to management host and board turning photoelectric alarm module; When acquisition transient current signal IZT is cliff of displacement formula waveform, judge that circuit may suffer open circuit fault, prompting needs to carry out switchgear maintenance, and circuit is out of service, sends alerting signal to management host and board turning photoelectric alarm module.
When the weather of management area enters thunderstorm season or haze multiple season, management host by adapting to the voltage preset value of amendment in season, electric current preset value transfers to voltage comparator and current comparator, respectively to reduce rate of false alarm of the present utility model.
Compared with the power distribution network digital fault indicator being 202661572U with patent publication No., the utility model effectively can reduce circuit wrong report, simultaneously according to the waveform of transient current signal and the electric current of acquisition and voltage signal, judges line fault type further.
Above content is only to citing of the present utility model and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the design of utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (10)
1. one kind is reduced the distribution intelligent trouble indicator of false alarm, comprise online electricity-fetching module, online electricity-fetching module is connected with power management module, power management module is connected with lithium battery, power management module and lithium battery form supply module, supply module is connected with flush bonding processor MCU, flush bonding processor MCU reads transient current sampling module signal, instruction is sent to board turning photoelectric alarm, and by communication module, failure message is sent to management host, it is characterized in that, also comprise voltage sampling module and voltage comparator, described voltage sampling module Real-time Obtaining line voltage value, and pass through magnitude of voltage and the preset voltage value size of the acquisition of voltage comparator comparative voltage sampling module, and the signal is relatively sent to flush bonding processor MCU, after the transient current signal that transient current sampling module obtains by flush bonding processor MCU and the signal that voltage comparator sends and preset value compare, again board turning photoelectric alarm is sent in instruction.
2. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1, it is characterized in that, also have current sampling module and current comparator, described current sampling module Real-time Obtaining line electricity flow valuve, described current comparator compares current value and the pre-set current value size of current sampling module acquisition, and the signal is relatively sent to flush bonding processor MCU, the transient current signal that transient current sampling module obtains by flush bonding processor MCU and voltage comparator, after the signal that current comparator sends and preset value compare, again board turning photoelectric alarm is sent in instruction.
3. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 2, it is characterized in that, described current comparator is a resistance of connecting at alternative route, transfer electric current to be detected to voltage to be detected, described voltage comparator is used to measure the voltage at described resistance two ends, again the magnitude of voltage detected and pre-set current value and described resistance product are compared, and the signal is relatively sent to flush bonding processor MCU.
4. the as claimed in claim 1 or 2 distribution intelligent trouble indicator reducing false alarm, is characterized in that, described voltage comparator adopt LM324, LM358, uA741, TL081 234, one in OP07, OP27, LM339, LM393.
5. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1 or 2, it is characterized in that, described supply module comprises line electricity-fetching module, power management module and lithium battery, and online electricity-fetching module is connected with power management module, and power management module is connected with lithium battery.
6. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1 or 2, is characterized in that, described online electricity-fetching module is the electricity getting device utilizing the electromagnetic energy responded to around ultra-high-tension power transmission line to obtain electric energy induction.
7. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1 or 2, it is characterized in that, also have communication module and management host, the transient current sampling module signal that flush bonding processor MCU reads by communication module and the instruction sent, the voltage comparison signal that voltage comparator sends, the electric current comparison signal that current comparator sends transfers to management host, and the supervisory signal that receiving management main frame sends transfers to flush bonding processor MCU, the voltage preset value that receiving management main frame sends, electric current preset value transfers to voltage comparator and current comparator respectively.
8. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1 or 2, is characterized in that, described communication module adopts the UHF transceiver of CC1100.
9. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1 or 2, is characterized in that, described power management module adopts chip LTC1625 control and management.
10. the distribution intelligent trouble indicator reducing false alarm as claimed in claim 1 or 2, is characterized in that, described flush bonding processor MCU adopts MSP430F14X single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678153.7U CN204154853U (en) | 2014-11-13 | 2014-11-13 | A kind of distribution intelligent trouble indicator reducing false alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678153.7U CN204154853U (en) | 2014-11-13 | 2014-11-13 | A kind of distribution intelligent trouble indicator reducing false alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154853U true CN204154853U (en) | 2015-02-11 |
Family
ID=52512955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420678153.7U Expired - Fee Related CN204154853U (en) | 2014-11-13 | 2014-11-13 | A kind of distribution intelligent trouble indicator reducing false alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204154853U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898025A (en) * | 2015-06-10 | 2015-09-09 | 航天科工深圳（集团）有限公司 | Cable line fault monitoring circuit based on double coils |
| CN106383260A (en) * | 2016-11-02 | 2017-02-08 | 华电北瑞电气(北京)有限公司 | Adaptive detection current sensor and anti-false-alarm adaptive detection method |
| CN108983139A (en) * | 2018-08-28 | 2018-12-11 | 云南电网有限责任公司电力科学研究院 | A kind of fault detector test macro |
| CN109655715A (en) * | 2019-01-26 | 2019-04-19 | 国网甘肃省电力公司电力科学研究院 | Power grid fault identification method based on power grid fault intelligent identification equipment |
| CN112363014A (en) * | 2020-10-30 | 2021-02-12 | 贵州电网有限责任公司 | Distribution network ground short circuit fault distance detection system and detection method thereof |
| CN112379215A (en) * | 2020-10-30 | 2021-02-19 | 贵州电网有限责任公司 | Distribution network ground short circuit fault distance detection method |
| CN113933622A (en) * | 2021-09-26 | 2022-01-14 | 湖北睿能电气有限公司 | PDU and method for intelligent fault positioning |
| CN116742794A (en) * | 2023-04-28 | 2023-09-12 | 北京国电通网络技术有限公司 | Intelligent monitoring equipment and method for closed type jet type fuse |
-
2014
- 2014-11-13 CN CN201420678153.7U patent/CN204154853U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898025A (en) * | 2015-06-10 | 2015-09-09 | 航天科工深圳（集团）有限公司 | Cable line fault monitoring circuit based on double coils |
| CN106383260A (en) * | 2016-11-02 | 2017-02-08 | 华电北瑞电气(北京)有限公司 | Adaptive detection current sensor and anti-false-alarm adaptive detection method |
| CN108983139A (en) * | 2018-08-28 | 2018-12-11 | 云南电网有限责任公司电力科学研究院 | A kind of fault detector test macro |
| CN109655715A (en) * | 2019-01-26 | 2019-04-19 | 国网甘肃省电力公司电力科学研究院 | Power grid fault identification method based on power grid fault intelligent identification equipment |
| CN112363014A (en) * | 2020-10-30 | 2021-02-12 | 贵州电网有限责任公司 | Distribution network ground short circuit fault distance detection system and detection method thereof |
| CN112379215A (en) * | 2020-10-30 | 2021-02-19 | 贵州电网有限责任公司 | Distribution network ground short circuit fault distance detection method |
| CN113933622A (en) * | 2021-09-26 | 2022-01-14 | 湖北睿能电气有限公司 | PDU and method for intelligent fault positioning |
| CN113933622B (en) * | 2021-09-26 | 2023-12-15 | 湖北睿能电气有限公司 | PDU and method for intelligent fault location |
| CN116742794A (en) * | 2023-04-28 | 2023-09-12 | 北京国电通网络技术有限公司 | Intelligent monitoring equipment and method for closed type jet type fuse |
| CN116742794B (en) * | 2023-04-28 | 2024-03-29 | 北京国电通网络技术有限公司 | Intelligent monitoring equipment and method for closed type jet type fuse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204154853U (en) | A kind of distribution intelligent trouble indicator reducing false alarm | |
| CN101738565B (en) | Adaptive fault indicator | |
| CN106569089A (en) | Power distribution line dynamic Information-based power distribution network fault monitoring method | |
| CN106841934A (en) | Intelligent trouble indicator and instruction system | |
| CN103887888B (en) | A kind of fuse on-line monitoring system | |
| CN206657077U (en) | Intelligent trouble indicator and instruction system | |
| CN102901908A (en) | Cable operation information monitoring system and implement method thereof | |
| CN104582181A (en) | Lamp information collecting control device | |
| CN203398755U (en) | Three-phase earth leakage protection and power-off automatic recovery apparatus | |
| CN102749554A (en) | Electric power circuit fault detecting system | |
| CN204287859U (en) | Based on embedded ARM processor oil pipeline cathodic protection protection power source device | |
| CN107450027A (en) | A kind of uninterrupted power source intelligent online monitoring and warning system platform | |
| CN106546858A (en) | A kind of detection method and device of distribution network failure type based on transient state component | |
| CN206585391U (en) | A kind of fault monitoring system with recording type fault detector | |
| CN103267922A (en) | Intelligent cable short circuit grounding and temperature fault indicator | |
| CN109406947A (en) | A kind of explosion-proof type intelligent trouble indicator | |
| CN202929155U (en) | Overhead line real-time detection system based on wireless sensor network | |
| CN201724969U (en) | Intelligent measurement display device of switch cabinet | |
| CN109660018A (en) | A kind of transmission line of electricity sensing electricity getting device based on Rogowski coil | |
| CN203705089U (en) | Non-closed magnetic circuit current induction electricity drawing wireless temperature measurement system | |
| CN211180059U (en) | Explosion-proof intelligent fault indicator | |
| CN210833886U (en) | Cable joint temperature monitoring device and system | |
| CN205539319U (en) | Power grid operation fault detection device | |
| CN110763348A (en) | Cable joint temperature monitoring device and system | |
| CN208421132U (en) | A kind of current temperature and On-line Fault monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170124 Address after: 330006 Nanchang, Jiangxi province stacked Hill Road, No. 383 Patentee after: NANCHANG POWER SUPPLY BRANCH, STATE GRID JIANGXI ELECTRIC POWER CO., LTD. Patentee after: State Grid Corporation of China Patentee after: State Grid Jiangxi electric power company Nanchang Qingshan Power Supply Branch Address before: 100031 Xicheng District, Beijing, West Chang'an Avenue, No., No. 86 Patentee before: State Grid Corporation of China Patentee before: NANCHANG POWER SUPPLY BRANCH, STATE GRID JIANGXI ELECTRIC POWER CO., LTD. Patentee before: STATE GRID JIANGXI NANCHANG QINGSHANHU ZONE POWER SUPPLY CO., LTD. |
|
| 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: 20150211 Termination date: 20201113 |