CN204649896U - A kind of electrical network distributed row ripple route selection and fault locator - Google Patents
A kind of electrical network distributed row ripple route selection and fault locator Download PDFInfo
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- CN204649896U CN204649896U CN201520390966.0U CN201520390966U CN204649896U CN 204649896 U CN204649896 U CN 204649896U CN 201520390966 U CN201520390966 U CN 201520390966U CN 204649896 U CN204649896 U CN 204649896U
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- 238000012545 processing Methods 0.000 claims abstract description 32
- 230000004807 localization Effects 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
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- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 238000013459 approach Methods 0.000 description 1
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- 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
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- Locating Faults (AREA)
Abstract
The technical program provides the distributed row ripple route selection of a kind of electrical network and fault locator, comprises the route selection of row ripple and fault location system and distributed row ripple harvester; The route selection of described row ripple and fault location system by preposition row ripple collecting unit, stand in GPS lock unit and interior processing unit of stand form, described preposition row ripple collecting unit is connected with processing unit in station, and in described station, GPS lock unit is connected with processing unit in station with preposition row ripple collecting unit respectively; Described distributed row ripple harvester is made up of traveling wave sensor, the outer processing unit of outer GPS lock unit and station of standing, and described traveling wave sensor is connected with the outer processing unit in station, and outside described station, GPS lock unit is connected with traveling wave sensor and outer processing unit of standing respectively; Described preposition row ripple collecting unit connects and the outer GPS lock unit in station and outer processing unit of standing; In described station, processing unit is connected to dispatching center respectively with GPS lock unit in station.
Description
Technical field
The utility model relates to power distribution network route selection and Fault-Locating Test field, specifically a kind of electrical network distributed row ripple route selection and fault locator.
Background technology
At present, mainly contain two kinds of practical approaches and realize the online localization of fault of power distribution network: (1) realizes power distribution automation (FA), the FTU utilizing line load switch place to install realizes fault split fix.Detect measurement TA secondary current by circuit FTU and whether occur that interval angle judges circuit over current fault, and testing result is delivered to SCADA system, system main website utilizes corresponding fault location algorithm determination guilty culprit section according to each FTU reporting information.The method is suitable only for the area achieving distribution automation, but it is too high to realize distribution automation cost, simultaneously, the method still cannot overcome that distribution network failure electric current is faint, the not obvious problem brought of fault signature, namely allows to carry out localization of fault, also can only sectional location, searching of trouble spot is still more difficult, especially in the net of city, the lower ground of most power cable, the large area limiting the method uses.(2) hang fault detector along the line, realize fault split fix according to the difference of pointer detection information before and after trouble spot.Utilize fault detector to realize the location of line short fault, there is cost low, advantage easy for installation, the indicating status according to fault detector on circuit is needed after fault, manually searching place section along the line, waste time and energy, there is the problem in method (1) in the method equally.
In sum, for small current neutral grounding system transmission line of electricity, its localization of fault and causal analytic research accurately or a brand-new research field.If make a breakthrough, be huge by contribution small current neutral grounding system being realized to robotization, also have very important constructive role to power transmission network.
Mostly all rest in failure line selection at low current grounding, but can accurately select the equipment of faulty line and device less.According to investigations, the Small Electric Current Earthing And Routing Device originally dropped into is in condition out of service mostly because of the not high reason of route selection accuracy rate.Therefore, again change thinking, seek a kind of line selection apparatus of high accuracy, and the device of the accurate localizing faults of energy or system, concerning work of electric power system person, be a very important and relevant thing.
Utility model content
The technical program provides the distributed row ripple route selection of a kind of electrical network and fault locator, comprises the route selection of row ripple and fault location system and distributed row ripple harvester;
The route selection of described row ripple and fault location system by preposition row ripple collecting unit, stand in GPS lock unit and interior processing unit of stand form, described preposition row ripple collecting unit is connected with processing unit in station, and in described station, GPS lock unit is connected with processing unit in station with preposition row ripple collecting unit respectively;
Described distributed row ripple harvester is made up of traveling wave sensor, the outer processing unit of outer GPS lock unit and station of standing, and described traveling wave sensor is connected with the outer processing unit in station, and outside described station, GPS lock unit is connected with traveling wave sensor and outer processing unit of standing respectively;
Described preposition row ripple collecting unit connects and the outer GPS lock unit in station and outer processing unit of standing;
In described station, processing unit is connected to dispatching center respectively with GPS lock unit in station.
Preferably, described dispatching center is computing machine.
The utility model has following beneficial effect:
1, powerful, accurately and reliably: accurately can determine faulty line, automatically positioning fault points is found range, and does not need manual intervention route selection rate of accuracy reached 100%, localization of fault error be less than 300 meters of transient earthings to transmission line of electricity therefore.
2, strong adaptability: system is based on transient state travelling wave principle, because the capable ripple of singlephase earth fault and neutral grounding mode, fault type, transition resistance have nothing to do, therefore fault signature is obvious, be conducive to route selection, be applicable to neutral point through small resistor, grounding through arc, different earth neutral systems such as central point is earth-free and being adapted to are maked somebody a mere figurehead, cable hybrid line and multipoint line, to small current neutral grounding system, break through the restriction of traditional zero-sequence current, user need not install zero sequence current mutual inductor, also can be grounded route selection function.
3, capacity is large: set of device can monitor 4 sections of buses, 24 outlets.Can expand to 32 circuits, 48 circuits.
Accompanying drawing explanation
Fig. 1 is frame principles schematic diagram of the present utility model.
Embodiment
In order to make the utility model object, technical scheme and advantage clearer, be now described in detail by reference to the accompanying drawings.
As shown in Figure 1, the distributed row ripple route selection of a kind of electrical network and fault locator, comprise the route selection of row ripple and fault location system 1 and distributed row ripple harvester 2;
The route selection of described row ripple and fault location system 1 by preposition row ripple collecting unit 3, stand in GPS lock unit 4 and interior processing unit 5 of stand form, described preposition row ripple collecting unit 3 is connected with processing unit 5 in station, in described station, GPS lock unit 4 is connected with processing unit 5 in station with preposition row ripple collecting unit 3 respectively, and it mainly completes the localization of fault of small current earthing wire-selecting function and fault branch thereof;
Described distributed row ripple harvester 2 is made up of traveling wave sensor 7, the outer processing unit 9 of outer GPS lock unit 8 and station of standing, described traveling wave sensor 7 is connected with the outer processing unit 9 in station, and outside described station, GPS lock unit 8 is connected with traveling wave sensor 7 and outer processing unit 9 of standing respectively;
Described preposition row ripple collecting unit 3 connects and the outer GPS lock unit 8 in station and outer processing unit 9 of standing;
In described station, processing unit 5 is connected to dispatching center 6 respectively with GPS lock unit 4 in station.
As shown in Figure 2, Fig. 2 depicts the ripple route selection of distribution row and localization of fault principle;
Localization of fault judges that principle is: after singlephase earth fault occurs, judge its fault signature in the following manner: 1) ground path initial row ripple is much larger than the initial row ripple of ungrounded circuit, and polarity is contrary; 2) the initial row wave number value of ungrounded circuit is equal, and polarity is identical; 3) almost have nothing to do with neutral grounding mode, fault signature is obvious.
Single-phase grounding selecting principle based on row ripple is: 1) the row wave amplitude of faulty line is much larger than non-fault line, namely when circuit there being N bar feeder line, be cable entirely or be pole line or cable and overhead line hybrid line entirely, imk is the travelling wave current amplitude on feeder line, and imf is the travelling wave current amplitude on fault wire.If imk≤imf/ (N-1), K=1,2...N, k ≠ f, judge that f is as fault wire, all the other are non-faulting line; 2) faulty line is contrary with the polarity of traveling wave of non-fault line, and namely visible lines ripple is flow to bus by fault wire in fault wire, and non-fault line is row ripple flows to circuit by bus.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. electrical network distributed row ripple route selection and a fault locator, is characterized in that: comprise the route selection of row ripple and fault location system and distributed row ripple harvester;
The route selection of described row ripple and fault location system by preposition row ripple collecting unit, stand in GPS lock unit and interior processing unit of stand form, described preposition row ripple collecting unit is connected with processing unit in station, and in described station, GPS lock unit is connected with processing unit in station with preposition row ripple collecting unit respectively;
Described distributed row ripple harvester is made up of traveling wave sensor, the outer processing unit of outer GPS lock unit and station of standing, and described traveling wave sensor is connected with the outer processing unit in station, and outside described station, GPS lock unit is connected with traveling wave sensor and outer processing unit of standing respectively;
Described preposition row ripple collecting unit connects and the outer GPS lock unit in station and outer processing unit of standing;
In described station, processing unit is connected to dispatching center respectively with GPS lock unit in station.
2. a kind of electrical network distributed row ripple route selection according to claim 1 and fault locator, is characterized in that: described dispatching center is computing machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520390966.0U CN204649896U (en) | 2015-06-08 | 2015-06-08 | A kind of electrical network distributed row ripple route selection and fault locator |
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| CN201520390966.0U CN204649896U (en) | 2015-06-08 | 2015-06-08 | A kind of electrical network distributed row ripple route selection and fault locator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226656A (en) * | 2016-08-30 | 2016-12-14 | 上海萌烨电力科技有限公司 | Distribution network line monitors fault location system in real time |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226656A (en) * | 2016-08-30 | 2016-12-14 | 上海萌烨电力科技有限公司 | Distribution network line monitors fault location system in real time |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 |