CN202854252U - Real-time data acquisition and fault locating system of power distribution network - Google Patents
Real-time data acquisition and fault locating system of power distribution network Download PDFInfo
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- CN202854252U CN202854252U CN2012205414067U CN201220541406U CN202854252U CN 202854252 U CN202854252 U CN 202854252U CN 2012205414067 U CN2012205414067 U CN 2012205414067U CN 201220541406 U CN201220541406 U CN 201220541406U CN 202854252 U CN202854252 U CN 202854252U
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Abstract
The utility model provides a real-time data acquisition and fault locating system of a power distribution network. The real-time data acquisition and fault locating system of the power distribution network comprises transformer station voltage acquisition units, a plurality of line units, a real-time data server, a background monitoring computer and a hand-held terminal, wherein each transformer station is provided with one transformer station voltage acquisition unit, the transformer station voltage acquisition unit comprises one intelligent voltage detection terminal, each line unit comprises three fault locating and data acquisition sensors and one communication and calculating terminal, the intelligent voltage detection terminal, the communication and calculating terminal and the hand-held terminal are in wireless communication with the real-time data server, and the three fault locating and data acquisition sensors and the communication and calculating terminal are in short-distance wireless communication in the same line unit. The real-time data acquisition and fault locating system has high precision of real-time acquired power transmission line information, rapidly and accurately determines short circuit and earth faults, shortens power-off overhaul time, reduces fault line patrol personnel and saves material resources.
Description
Technical field
The utility model relates to the electric power network technical field, is specifically related to real-time data acquisition and fault location system in the power distribution network operational process.
Background technology
The localization of fault of power distribution network mainly is the localization of fault of overhead transmission line single-phase earthing and the localization of fault of phase fault.The electric pressure of medium-voltage distribution circuit is mainly 10KV, most earth-free or pass through grounding through arc for transformer neutral point, this type of overhead transmission line easy break-down, and be singlephase earth fault more than 90%, reason is that this circuit single-phase-to-ground current (capacitance current) is minimum, is difficult to difference with the normal out-of-balance current in service of circuit.The sample devices of common distribution network failure monitoring mostly is to adopt by the transformer mode and carries out current sample take iron core as magnetic conductor, because the nonlinear characteristic of the small-signal section that iron core is intrinsic, thereby can't accomplish accurate measurement to singlephase earth fault, can't satisfy the requirement of single-phase earth fault current high-acruracy survey.The principle of work of at present common overhead transmission line intelligent trouble indicator roughly can be divided into two large classes: a class is to adopt the half-wave method principle, suppose that namely earth fault occurs in phase voltage near the moment of peak value, first half-wave capacitance current sudden change is maximum after the ground connection, the fault detector that surpasses the threshold value of setting sends indicator signal, judges fault section with this.But there is the defective on the principle in this method, because actual earth fault might not occur in phase voltage near the moment of peak value, causes based on the localization of fault accuracy rate of half-wave method principle not high; Another kind of is to adopt signal injection method principle, the method is at high-voltage signal source apparatus of every section bus installing of transformer station, when earth fault occurs, utilize the open-delta change in voltage of substation bus bar as initiating signal, the high voltage connector that closes is delivered to a high-frequency signal on the circuit, consists of the loop at the earth point of faulty line, light the fault detector of this faulty line section, the failure judgement section.This method when running into high resistance grounding (according to statistics, about singlephase earth fault more than 50% is high resistance grounding) because of signal very weak, be difficult to accurate detection and Identification trouble spot, abundant because of harmonic wave when running into arc grounding, and be interrupted earth, be difficult to equally judgement where earth fault occurs.
In addition, the used method of existing equipment generally all can only be measured the fault current of a certain specified point of a circuit (phase), can not carry out comprehensive analysis and judgement according to electric current respective change of other phases and other some positions, thereby when line current runs into larger disturbance (when putting into operation such as large-size machine or transformer disturbance moment), circuit dash current and single-phase earth fault current are difficult to distinguish.Also have, the same category of device function ratio is more single at present, and what have can only carry out localization of fault, and what have can only carry out running status (electric current, temperature) monitoring, does not have the integrated of practical function.
The utility model content
The purpose of this utility model is: overcome the deficiencies in the prior art, provide a kind of can Real-time Collection three-phase current, zero-sequence current, the temperature of each monitoring section of distribution line, the information such as substation bus bar three-phase voltage, residual voltage and can in time judge short trouble, earth fault, accurately locate Real-time Electrical Distribution Network Data collection and the fault location system of abort situation and fault-time.
The technical solution of the utility model is: Real-time Electrical Distribution Network Data collection of the present utility model and fault location system, and its design feature is: comprise transformer substation voltage collecting unit, line unit, real time data server, background monitoring computing machine and handheld terminal;
Above-mentioned transformer substation voltage collecting unit each transformer station in the jurisdiction power distribution network respectively arranges one; Each transformer substation voltage collecting unit comprises that 1 is used for gathering the three-phase voltage of substation bus bar and the intelligent voltage sense terminals DFU-C of residual voltage value;
Line unit is arranged on each transmission line of electricity of power distribution network, and the quantity of line unit is determined according to actual needs; Each line unit comprises that 3 are used for dividing a phase acquisition line current to communicate by letter and computing terminal DFU-B with 1 with temperature and to localization of fault and data sampling sensor DFU-A that short trouble is judged; Localization of fault and data sampling sensor DFU-A are provided with the malfunction indicator lamp for fault alarm; Above-mentioned 3 localization of fault and data sampling sensor DFU-A respectively arrange 1 on each phase line of the triple-phase line of transmission line of electricity; Real time data server is a kind of server for receiving in real time image data, data being carried out analyzing and processing, earth fault is judged and the trouble spot is positioned; The background monitoring computing machine shows and provides the PC of operation interface in real time for being used for information; Real time data server and background monitoring computer installation are overhauled the center at monitoring power distribution; Handheld terminal for can be at the scene, trouble spot to the localization of fault of line unit and data sampling sensor DFU-A with communicate by letter and computing terminal DFU-B resets, the PDA of parameters and debugging;
The intelligent voltage sense terminals DFU-C of above-mentioned transformer substation voltage collecting unit is connected by the GPRS network radio communication with real time data server; 3 localization of fault and the data sampling sensor DFU-A of same line unit are connected with communication and computing terminal DFU-B short-distance wireless communication, and the communication of each line unit and computing terminal DFU-B are by GPRS network and the communication connection of real time data server remote-wireless; Real time data server is connected by ethernet communication with the background monitoring computing machine; Handheld terminal is connected radio communication with real time data server and connects.
Further scheme is: the communication of above-mentioned line unit and computing terminal DFU-B are the devices that a kind of 3 localization of fault and data sampling sensor DFU-A that has with real time data server and same unit carries out the radio communication time adjustment function.
The utlity model has positive effect: three-phase current, zero-sequence current, temperature that (1) the utility model can the Real-time Collection distribution line, the information such as substation bus bar three-phase voltage, residual voltage, and shown by the background monitoring computing machine at monitoring power distribution maintenance center, be convenient to the running status of monitor staff's overall monitor power distribution network.(2) the utility model can be judged short trouble, earth fault automatically in time by the information of Real-time Collection, accurately locate position of failure point, determine the time that fault occurs, be convenient to rapidly removing faults, dwindle power failure range, reduce power off time, improve power supply reliability.(3) use system of the present utility model, can effectively improve the power distribution network operation and management level, Reduction of failure judges that the experience to the people relies on, and reduces greatly the fault track walker, increases work efficiency, and uses manpower and material resources sparingly.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Reference numeral in the above-mentioned accompanying drawing is as follows:
Transformer substation voltage collecting unit 1, line unit 2, real time data server 3, background monitoring computing machine 4, handheld terminal 5.
Embodiment
(embodiment 1)
See Fig. 1, Real-time Electrical Distribution Network Data collection and the fault location system of present embodiment are comprised of transformer substation voltage collecting unit 1, line unit 2, real time data server 3, background monitoring computing machine 4 and handheld terminal 5.
Transformer substation voltage collecting unit 1 each transformer station in the jurisdiction power distribution network of monitoring power distribution maintenance center respectively arranges one.The major equipment of each transformer substation voltage collecting unit 1 is intelligent voltage sense terminals DFU-C.Intelligent voltage sense terminals DFU-C is used for gathering three-phase voltage and the residual voltage value of substation bus bar, the starting criteria during as generation singlephase earth fault (small current neutral grounding).Intelligent voltage sense terminals DFU-C has RS485 communication and GPRS radio communication function, and it sends to real time data server 3 by RS485 communication or GPRS communication mode in real time with three-phase voltage and the residual voltage value of the substation bus bar of collection.
Line unit 2 is arranged on each transmission line of electricity of power distribution network, and the quantity of line unit 2 arranges according to actual needs.Each line unit 2 is by 3 localization of fault and data sampling sensor DFU-A communicates by letter with 1 and computing terminal DFU-B forms.3 localization of fault and data sampling sensor DFU-A respectively arrange 1 on each phase line of the triple-phase line of transmission line of electricity, jointly consist of one group, divide phase acquisition to electric current and line temperature on the triple-phase line of these line unit 2 positions.Localization of fault and data sampling sensor DFU-A can judge voluntarily to the short trouble of circuit.Localization of fault and data sampling sensor DFU-A are provided with the malfunction indicator lamp for fault alarm.The measuring error that localization of fault and data sampling sensor DFU-A gather line temperature is ± 1 ℃, by the continuous temperature measurement to cable end contact or cable itself, and the fault trend of measurable cable end contact or cable itself.Localization of fault and data sampling sensor DFU-A can reset and the operation such as setting parameter by handheld terminal 5 usefulness short-distance wireless communication modes.
3 localization of fault and data sampling sensor DFU-A employing ISM433MHz frequency in communication and computing terminal DFU-B and the same line unit 2 are carried out short-distance wireless communication, receive in real time the localization of fault of same unit and the data that data sampling sensor DFU-A gathers, and calculating zero-sequence current numerical value, the data of its reception and the zero-sequence current numerical value that calculates are uploaded to real time data server 3 in real time by GPRS network.Carry out the radio communication time adjustment function when communication and computing terminal DFU-B have with 3 pairs of real time data servers and to 3 localization of fault and data sampling sensor DFU-A with the unit, to the time precision reach 10 microseconds.Communication and computing terminal DFU-B provide working power by the high-power solar panels of use large tracts of land for it, and energy Real Time Monitoring electrical source consumption situation and solar charging electrical efficiency, in time adjust mode of operation.Communication and the operations such as computing terminal DFU-B can reset by handheld terminal 5 usefulness short-distance wireless communication modes, setting parameter.
Real time data server 3 is the Real-time Electrical Distribution Network Data collection of present embodiment and signal centre and the information processing centre of fault location system.Real time data server 3 is a kind of servers for receiving in real time image data, automatically data being carried out analyzing and processing, earth fault is judged and the trouble spot is positioned by built-in program; Real time data server 3 has GPRS radio communication, ethernet communication, note sending function.Real time data server 3 is connected by the GPRS radio communication with the intelligent voltage voltage detecting terminal DFU-C of transformer substation voltage collecting unit 1, communication and the computing terminal DFU-B of line unit 2, be connected by ethernet communication with background monitoring computing machine 4, carry out real time data, failure message and control command exchange.Real time data server 3 is arranged on monitoring power distribution maintenance center.
Background monitoring computing machine 4 is PC, and the information that is mainly used in shows in real time and operation interface is provided.Background monitoring computing machine 4 is arranged on monitoring power distribution maintenance center.
The Real-time Electrical Distribution Network Data collection of present embodiment and the course of work of fault location system and the principle that line fault is positioned such as following:
The intelligent voltage sense terminals DFU-C of transformer substation voltage collecting unit 1 sends to real time data server 3 by radio communication in real time with three-phase voltage and the residual voltage value of the substation bus bar that gathers, one of starting criteria when singlephase earth fault (small current neutral grounding) occurs;
Communication in the line unit 2 and computing terminal DFU-B timing controlled enter the synchronous acquisition pattern with localization of fault and the data sampling sensor DFU-A of unit, after localization of fault and the data sampling sensor DFU-A image data, give communicating by letter and computing terminal DFU-B with the unit information reportings such as the current phasor of self circuit and temperature; 3 localization of fault of communication and the same unit that will collect of computing terminal DFU-B and the information of data sampling sensor DFU-A are put in order, according to phase-splitting Current calculation vector with, and then obtain zero-sequence current; Communication and computing terminal DFU-B send to real time data server 3 by GPRS network or high-power wireless with the data of putting in order; The information that the intelligent voltage sense terminals DFU-C of the communication of real time data server 3 each line unit 2 of reception and the information that computing terminal DFU-B uploads and each transformer substation voltage collecting unit 1 uploads, utilize the special algorithm of interplantation, whether computational analysis low current grounding occurs, if break down, failure judgement occurrence positions then; Real time data server 3 sends to background monitoring computing machine 4 with image data and analysis judged result in real time, but the user is by each transformer station's circuit running status of background monitoring computing machine 4 real time inspections and the failure message that may occur.
The collection of the real time data particularly precision of line current data acquisition is the important foundation link of line fault judgement and localization of fault.Native system carries out continuous high-density sampling by localization of fault and the data sampling sensor DFU-A of line unit 2 to the three-phase line electric current, utilize the gamut linearization of DFU-A, consistance and the software of equipment making that residual error is revised automatically, guarantee measuring-signal particularly linearization of small-signal section in the gamut scope, the three-phase current signal amplitude error that realize to gather is not more than 0.5%, solved preferably the inadequate problem of zero-sequence component sampling precision of fault zero-sequence current and quintuple harmonics in the prior art; And, the communication of line unit 2 and computing terminal DFU-B to carry out with 3 localization of fault of unit and data sampling sensor DFU-A radio communication to the time, to the time precision reach 10 microseconds, thereby phase angle error is less than 1 degree when realizing measuring quintuple harmonics, on this basis, communication and computing terminal DFU-B receive 3 three-phase faults location of same unit and the current information of data sampling sensor DFU-A, first-harmonic and the quintuple harmonics of continuous analytical calculation zero-sequence current, and then form: the whole network---each phase of each circuit---each point bit location---, the mode of the synchronous comprehensive analysis processing of four-stage device, it is isolated to have solved preferably in the prior art data analysis, the problem that accuracy is not high; In addition, very little for the quintuple harmonics amplitude, very easily be disturbed problem, adopt method of addition Software Anti-interference and high-performance hardware to carry out the method for narrow-band filtering to improve the reliability of the data that gathers among localization of fault and the data sampling sensor DFU-A; At the Design of Mechanical Structure of localization of fault and data sampling sensor DFU-A by taking spacing measure guaranteeing when swinging because the reason circuits such as weather are fierce, localization of fault and data sampling sensor DFU-A relative position remain unchanged.
When the localization of fault of line unit 2 and data sampling sensor DFU-A detect distribution feeder electric current 〉=630A, localization of fault and data sampling sensor DFU-A start short trouble and judge flow process, if when entering after the flow process feeder line and reaching more than 5 seconds without stream and duration, localization of fault and data sampling sensor DFU-A judge the fault that is short-circuited.Localization of fault and data sampling sensor DFU-A carry out local fault alarm by its malfunction indicator lamp, and simultaneously, communication and computing terminal DFU-B by same unit are uploaded to real time data server 3 with failure message.Real time data server 3 is analyzed according to the failure message that receives, adopt the node search procedure to determine the short circuit trouble point position: take the exit of transformer station as initial point, take line unit 2 as node, end to circuit carries out Data Detection successively, after detecting last action node, can assert between this node and next non-fault node short trouble has occured.When detecting last node of circuit still for the action node, can determine behind this node, to have short circuit trouble point.By above node search procedure, finally determine the short circuit trouble point position.Background monitoring computing machine 4 carries out corresponding demonstration synchronously.The malfunction indicator lamp of localization of fault and data sampling sensor DFU-A provides tutorial message for field service personnel, makes things convenient for scene rush to repair to process.After field service personnel repairing is disposed, localization of fault that can be by 5 pairs of these line units 2 of handheld terminal and data sampling sensor DFU-A with communicate by letter and computing terminal DFU-B resets and relative parameters setting.
Real-time Electrical Distribution Network Data collection and the fault location system of present embodiment, as follows to judgement and the Fault Locating Method of singlephase earth fault:
The mode that adopts the analysis of zero-sequence fault current first harmonics to combine with the quintuple harmonics analysis is judged the overhead transmission line singlephase earth fault.For the earth-free situation of transformer neutral point, adopt the first-harmonic analysis by synthesis method of the fault current of three-phase line; For the situation of transformer neutral point through grounding through arc, then adopt the quintuple harmonics analysis by synthesis method of the fault current that the time-delay of three-phase line gathers, because the computing method of this analysis singlephase earth fault steady-state current can be calculated in time-delay, thereby can effectively avoid the impact of circuit dash current after earth fault occurs.Two kinds of computing method will be according to different neutral ground situation automatic decision and switchings.
Adopt zero-sequence current increment criterion, zero sequence overcurrent setting threshold criterion and residual voltage starting criteria that singlephase earth fault is judged:
Zero-sequence current increment criterion: this criterion is by the variation delta I (0) of the zero-sequence current at Real-Time Monitoring localization of fault and data sampling sensor DFU-A mounting points place, after detecting Δ I (0) 〉=zero-sequence current increment threshold, judge that singlephase earth fault may occur at this place;
The zero sequence overcurrent is set the threshold criterion: this criterion is by the amplitude I (0) of the zero-sequence current at Real-Time Monitoring localization of fault and data sampling sensor DFU-A mounting points place, set threshold when detecting I (0) 〉=zero sequence overcurrent, judge that singlephase earth fault may occur at this place;
The residual voltage starting criteria: the residual voltage value of the intelligent voltage sense terminals DFU-C of this criterion by Real-Time Monitoring transformer substation voltage collecting unit 1, when detecting 3U (0) 〉=15V, decision-making system generation singlephase earth fault.
Aforesaid zero-sequence current increment threshold value and zero sequence overcurrent are set threshold value and are compiled by real time data server 3 that each section current information of circuit (comprising electric current, temperature data under normal and the malfunction) of all each transformer stations calculates under this monitoring power distribution maintenance center.
When earth fault occurs, after the intelligent voltage sense terminals DFU-C of transformer substation voltage collecting unit 1 detects residual voltage and meets the starting criteria condition, real time data server 3 will be delivered on the information, real time data server 3 will be detected by the zero-sequence current data of sending on the communication of each line unit 2 and the computing terminal DFU-B, the zero-sequence current data of the first node of each circuit relatively, utilize zero-sequence current increment criterion and zero sequence overcurrent to set the threshold criterion each bar circuit is carried out the ordering of earth fault possibility, determine to occur at last the circuit of singlephase earth fault; Behind the selected circuit, utilize the node search procedure, take the exit of transformer station as initial point, take line unit 2 as node, the end to circuit carries out Data Detection successively, after detecting last action node, can assert between this node and next non-fault node short trouble has occured.When detecting last node of circuit still for the action node, can determine behind this node, to have short circuit trouble point.By above node search procedure, finally determine the short circuit trouble point position.Background monitoring computing machine 4 carries out corresponding demonstration synchronously, localization of fault and data sampling sensor DFU-A that real time data server 3 drives the line unit 2 at the place of breaking down send the indication of reporting to the police by its malfunction indicator lamp, for field service personnel provides tutorial message, make things convenient for scene rush to repair to process.After field service personnel repairing is disposed, localization of fault that can be by 5 pairs of these line units 2 of handheld terminal and data sampling sensor DFU-A with communicate by letter and computing terminal DFU-B resets and relative parameters setting.
To sum up, the Real-time Electrical Distribution Network Data collection of present embodiment and the method for work of fault location system mainly may further comprise the steps:
1. the intelligent voltage sense terminals DFU-C of transformer substation voltage collecting unit 1 sends to real time data server 3 by radio communication in real time with three-phase voltage and the residual voltage value of the substation bus bar that gathers; The localization of fault of line unit 2 and data sampling sensor DFU-A carry out continuous high-density sampling to electric current and the temperature of three-phase line, and the data of collection send to real time data server 3 together with the zero-sequence current data of being calculated by communication and computing terminal DFU-B through GPRS network after processing with the communication of unit and computing terminal DFU-B;
2. real time data server 3 receives in real time the information data that the intelligent voltage sense terminals DFU-C of the communication of each line unit 2 and computing terminal DFU-B and each transformer substation voltage collecting unit 1 uploads and carries out analyzing and processing; Background monitoring computing machine 4 simultaneous display circuit running statuses and the information such as fault that may occur;
3. when the localization of fault of line unit 2 and data sampling sensor DFU-A detect distribution feeder electric current 〉=630A, localization of fault and data sampling sensor DFU-A start short trouble and judge flow process, if when entering after the flow process feeder line and reaching more than 5 seconds without stream and duration, localization of fault and data sampling sensor DFU-A judge the fault that is short-circuited; Localization of fault and data sampling sensor DFU-A send the indication of reporting to the police by its malfunction indicator lamp, and simultaneously, communication and computing terminal DFU-B by same unit send to real time data server 3 with failure message; Real time data server 3 adopts the node search procedures to determine the short circuit trouble point position: namely take the exit of transformer station as initial point, take line unit 2 as node, end to circuit carries out Data Detection successively, after detecting last action node, can assert between this node and next non-fault node short trouble has occured; When detecting last node of circuit still for the action node, determine behind this node, to exist short circuit trouble point;
4. real time data server 3 adopts residual voltage starting criteria, zero-sequence current increment criterion and zero sequence overcurrent setting threshold criterion that singlephase earth fault is judged: real time data server 3 calculates zero-sequence current increment threshold value by the current information that receives and the zero sequence overcurrent is set threshold value; During the residual voltage value of uploading as the intelligent voltage sense terminals DFU-C of transformer substation voltage collecting unit 1 〉=15V, decision-making system generation singlephase earth fault; Real time data server 3 detects the zero-sequence current data that communication and the computing terminal DFU-B of each line unit 2 uploads, the zero-sequence current data of the first node of each circuit relatively, set the threshold criterion with zero-sequence current increment criterion and zero sequence overcurrent each circuit is carried out the ordering of earth fault possibility, determine to occur the circuit of singlephase earth fault; Behind the selected circuit, utilize the node search procedure to determine the line fault point; After the localization of faults, localization of fault and data sampling sensor DFU-A that real time data server 3 drives the line unit 2 at the place of breaking down send the indication of reporting to the police by its alarm lamp.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is in the situation that does not break away from spirit and scope of the present utility model; can also make various conversion and obtain the corresponding technical scheme that is equal to variation, so all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.
Claims (2)
1. a Real-time Electrical Distribution Network Data collection and fault location system is characterized in that: comprise transformer substation voltage collecting unit (1), line unit (2), real time data server (3), background monitoring computing machine (4) and handheld terminal (5);
Described transformer substation voltage collecting unit (1) each transformer station in the jurisdiction power distribution network respectively arranges one; Each transformer substation voltage collecting unit (1) comprises that 1 is used for gathering the three-phase voltage of substation bus bar and the intelligent voltage sense terminals DFU-C of residual voltage value;
Line unit (2) is arranged on each transmission line of electricity of power distribution network, and the quantity of line unit (2) is determined according to actual needs; Each line unit (2) comprises that 3 are used for dividing a phase acquisition line current to communicate by letter and computing terminal DFU-B with 1 with temperature and to localization of fault and data sampling sensor DFU-A that short trouble is judged; Localization of fault and data sampling sensor DFU-A are provided with the malfunction indicator lamp for fault alarm; Described 3 localization of fault and data sampling sensor DFU-A respectively arrange 1 on each phase line of the triple-phase line of transmission line of electricity; Real time data server (3) is a kind of server for receiving in real time image data, data being carried out analyzing and processing, earth fault is judged and the trouble spot is positioned; Background monitoring computing machine (4) shows and provides the PC of operation interface in real time for being used for information; Real time data server (3) and background monitoring computing machine (4) are arranged on monitoring power distribution maintenance center; Handheld terminal (5) for can be at the scene, trouble spot to the localization of fault of line unit (2) and data sampling sensor DFU-A with communicate by letter and computing terminal DFU-B resets, the PDA of parameters and debugging;
The intelligent voltage sense terminals DFU-C of described transformer substation voltage collecting unit (1) is connected by the GPRS network radio communication with real time data server (3); 3 localization of fault and the data sampling sensor DFU-A of same line unit (2) are connected with communication and computing terminal DFU-B short-distance wireless communication, and the communication of each line unit (2) and computing terminal DFU-B are by GPRS network and the communication connection of real time data server (3) remote-wireless; Real time data server (3) is connected by ethernet communication with background monitoring computing machine (4); Handheld terminal (5) is connected 3 with real time data server) connect by radio communication.
2. Real-time Electrical Distribution Network Data collection according to claim 1 and fault location system is characterized in that: the communication of described line unit (2) and computing terminal DFU-B are the devices that a kind of 3 localization of fault and data sampling sensor DFU-A that has with real time data server (3) and same unit carries out the radio communication time adjustment function.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937675A (en) * | 2012-10-22 | 2013-02-20 | 江苏省电力公司常州供电公司 | Real-time data collecting and fault positioning system of power distribution network and working method thereof |
| WO2014173117A1 (en) * | 2013-04-25 | 2014-10-30 | 华为技术有限公司 | Method for fault location and isolation and detection device |
| CN104393681A (en) * | 2014-11-28 | 2015-03-04 | 国家电网公司 | Distribution line online monitoring communication terminal supporting switch collection and remote control |
| CZ305209B6 (en) * | 2014-04-14 | 2015-06-10 | Vysoké Učení Technické V Brně | Method of determining probability of unsymmetrical failure occurrence points in electrical networks and monitoring system intended for carrying out the method |
| CN104931858A (en) * | 2015-07-06 | 2015-09-23 | 国家电网公司 | A power transmission line fault locating method |
| CN105389667A (en) * | 2015-12-01 | 2016-03-09 | 江苏省电力公司苏州供电公司 | Power distribution system architecture supporting dispatching-distribution-repairing integration |
| CN108732464A (en) * | 2018-05-23 | 2018-11-02 | 同济大学 | Submarine observation network extra large cable on-line fault diagnosis and localization method |
| CN110426593A (en) * | 2019-08-22 | 2019-11-08 | 苏州银蕨电力科技有限公司 | A kind of method for locating single-phase ground fault based on residual voltage starting |
-
2012
- 2012-10-22 CN CN2012205414067U patent/CN202854252U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937675A (en) * | 2012-10-22 | 2013-02-20 | 江苏省电力公司常州供电公司 | Real-time data collecting and fault positioning system of power distribution network and working method thereof |
| CN102937675B (en) * | 2012-10-22 | 2015-12-02 | 江苏省电力公司常州供电公司 | The method of work of Real-time Electrical Distribution Network Data collection and fault location system |
| WO2014173117A1 (en) * | 2013-04-25 | 2014-10-30 | 华为技术有限公司 | Method for fault location and isolation and detection device |
| CZ305209B6 (en) * | 2014-04-14 | 2015-06-10 | Vysoké Učení Technické V Brně | Method of determining probability of unsymmetrical failure occurrence points in electrical networks and monitoring system intended for carrying out the method |
| CN104393681A (en) * | 2014-11-28 | 2015-03-04 | 国家电网公司 | Distribution line online monitoring communication terminal supporting switch collection and remote control |
| CN104931858A (en) * | 2015-07-06 | 2015-09-23 | 国家电网公司 | A power transmission line fault locating method |
| CN104931858B (en) * | 2015-07-06 | 2017-11-10 | 国家电网公司 | Power transmission line fault locating method |
| CN105389667A (en) * | 2015-12-01 | 2016-03-09 | 江苏省电力公司苏州供电公司 | Power distribution system architecture supporting dispatching-distribution-repairing integration |
| CN108732464A (en) * | 2018-05-23 | 2018-11-02 | 同济大学 | Submarine observation network extra large cable on-line fault diagnosis and localization method |
| CN108732464B (en) * | 2018-05-23 | 2020-12-11 | 同济大学 | Submarine observation network submarine cable fault on-line diagnosis and positioning method |
| CN110426593A (en) * | 2019-08-22 | 2019-11-08 | 苏州银蕨电力科技有限公司 | A kind of method for locating single-phase ground fault based on residual voltage starting |
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