CN201984133U - Power transmission line fault section locating system based on 3G communication network - Google Patents
Power transmission line fault section locating system based on 3G communication network Download PDFInfo
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- CN201984133U CN201984133U CN2011200673910U CN201120067391U CN201984133U CN 201984133 U CN201984133 U CN 201984133U CN 2011200673910 U CN2011200673910 U CN 2011200673910U CN 201120067391 U CN201120067391 U CN 201120067391U CN 201984133 U CN201984133 U CN 201984133U
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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
Abstract
The utility model relates to a power transmission line fault section locating system based on a 3G communication network. The locating system consists of three subsystems, namely, a line signal collecting system, a data transmission-remote terminal control system and a monitor center control system. A management person taking an ordinary microcomputer as the operating terminal without the need of additional installation of any special program can access the monitor center system at any time and at any place, and can timely understand the fault state, quickly determine the fault position, perform data query and participate in fault removal treatment; the management person using a cell phone can take the cell phone as the terminal to receive the fault information in real-time; and therefore the power transmission line fault monitoring forms a complete network system. Furthermore, the power transmission line fault section locating system based on the 3G communication network can greatly reduce the labor intensity of workers, improve the work efficiency, and greatly improve the fault locating precision.
Description
Technical field
The utility model relates to a kind of transmission line malfunction positioning system, relates in particular to a kind of transmission line malfunction area positioning system based on the 3G communication network.
Background technology
In the electric system of China, electric pressure mainly belongs at 6kV---and the middle and low voltage network of 110kV, its neutral grounding mode are mainly earth-free or through grounding through arc, such system is called small current neutral grounding system.
During small current neutral grounding system transmission line of electricity generation single-phase earthing, for isolated neutral system, faulty line top zero sequence CT output current (two-phase current sum) is the system's capacitive earth current except that faulty line, and numerical value is very little; And for the system of neutral by arc extinction coil grounding, because the adding of inductance current will make faulty line zero sequence CT output current littler.In addition, the single-phase earthing permanent fault generally causes that by instant earthing fault in short-term so the fault point positioning method of the ultra-high-tension power transmission line that follows conventional lines, there is certain drawback in the stable state fault component fundamental component when utilizing single-phase earthing as failure criterion.Just because of the feature of small current neutral grounding system line single phase grounding failure, make the difficult point that singlephase earth fault is judged becomes research.
Line-failure indicator is a large amount of technology of using in transmission system that the nineties occurs, and it has reduced workman's intensity to a certain extent, but still needs the workman along line inspection.And original fault detector adopts the fixed current magnitude of voltage of adjusting to judge line fault, need change setting parameter at different circuits, because line load changes at any time, so judging nicety rate is lower.
Wavelet analysis is the field, international forward position that started upsurge in recent years, it is a kind of new signal processing method that on the fourier-transform basis, grows up, it has overcome fourier-transform can not carry out the shortcoming that the time-frequency localization is analyzed simultaneously to signal, wavelet analysis can carry out Accurate Analysis to signal, particularly responsive to the variation of transient state jump signal and feeble signal, can extract fault signature reliably.According to the modulus maximum theory of wavelet transformation as can be known, break down and noise can cause signal unusual, and the modulus maximum point of wavelet transformation corresponding the singular point of sampled data, owing to the increase along with yardstick of the modulus maximum of noise decays, so after suitable yardstick decomposition, can ignore noise effect and obtain comparatively ideal transient state short-circuit signal, wavelet transformation is the small echo sum that a signal decomposition is become different scale and position, after utilizing suitable small echo and wavelet basis that the characteristic component of transient zero-sequence current is carried out wavelet transformation, the amplitude envelope line that is easy to find out transient zero-sequence current characteristic component on the faulty line is higher than non-fault line, and the phase place of its characteristic component is also opposite with non-fault line, so just can construct and utilize transient signal to carry out the judgement of earth fault.But because wavelet analysis algorithm complexity, operand is big, and general embedded system is difficult to competent this task, and this also is one of this project technological difficulties of mainly capturing.
Summary of the invention
The utility model is at above-mentioned problems of the prior art, through a large amount of exploratory development and Test Summaries, a kind of transmission line malfunction area positioning system based on the 3G communication network is provided, proposed at 256 and simplified wavelet algorithm, solve embedded system in the prior art and can't use the problem of Wavelet Transformation Algorithm, and the utility model has improved the fault judgement accuracy rate, and has realized the remote-wireless transmission of failure message.
The technical solution of the utility model is as follows:
Be set to distributed frame, become with Surveillance center 3 groups of subsystems of control system by line signal acquisition system, data transmission-remote terminal control system; The line signal acquisition system is gathered fault-signal, by Wireless Telecom Equipment in data transmission-remote terminal control system and mobile communication equipment failure message is sent to Surveillance center's control system, shows abort situation, fault phase, the failure message of fault-time on Surveillance center's control system computer screen and utilize sms technique in time, send exactly failure message.
Described line signal acquisition system adopts 32 arm processors, utilizes simplify wavelet algorithm fault current is carried out digitized measurement at 256.
The current/voltage sensor is transferred to the over-voltage over-current protection module with voltage and the current signal that collects in the described line signal acquisition system; the over-voltage over-current protection module is input to short trouble judge module and earth fault judge module with signal; after short trouble judge module and earth fault judge module detect short circuit and earth fault, failure message is emitted by the radio frequency transmission module.
Described data transmission-remote terminal control system comprises less radio-frequency transport module and 3G communication network transport module; The less radio-frequency transport module is provided with embedded scm; The less radio-frequency transport module receives fault-signal and the processing signals information of sending from the line signal acquisition system, and simultaneously, 3G communication network transport module sends to Surveillance center's control system with this information.
Described Surveillance center control system is provided with database server, is used to receive the data from each data terminal.
Each integrated circuit (IC) chip has all adopted the disturbing pulse absorption circuit, and the wiring board wiring has adopted substrate to apply and shading ring.
Power supply in described data transmission-remote terminal control system is a solar cell.
Advantage of the present utility model and beneficial effect are as follows:
1, the utility model adopts 32 arm processors, on the basis that earth fault is analyzed, current/voltage sudden change scheduling theory when taking place in conjunction with fault, utilize simplify wavelet algorithm fault current is carried out digitized measurement at 256, well solved the problem that embedded system can't be used Wavelet Transformation Algorithm.To simplify the wavelet analysis result is that criterion not only can effective recognition and hide the immediate current that causes such as normal runnings such as reclosings and impact, and the judging nicety rate for small current neutral grounding system generation earth fault also can reach more than 99% simultaneously.
2, the data transfer mode that on data transmission, has adopted less radio-frequency transmission and 3G communication network to combine, realized the remote-wireless transmission of failure message, simultaneously, owing to be provided with embedded scm, guarantee the reliability of twireless radio-frequency communication under the strong-electromagnetic field environment.
3, managerial personnel use common computer as operating terminal, need not to install any special procedure, access monitoring centring system whenever and wherever possible, can in time understand malfunction, fast determine abort situation, carry out data query, the row's of participation barrier is handled.For the managerial personnel that use mobile phone, also can mobile phone as terminal, receive failure message in real time.Make the transmission line malfunction monitoring form a whole network system.And, will greatly reduce working strength of workers, to raise labour efficiency, the localization of fault accuracy rate improves greatly.Estimate to produce 1,000,000 yuan/year of direct economic benefits, 1,000 ten thousand yuan/year of indirect economic effects after the present invention is come into operation.
Description of drawings
Fig. 1 is a structural representation block diagram of the present utility model.
Fig. 2 is the structural representation block diagram of the utility model line signal acquisition system.
Fig. 3 is the structural representation block diagram of the utility model data transmission-remote terminal control system.
Embodiment
With reference to accompanying drawing, in conjunction with specific embodiments, specifically describe as follows to structure of the present utility model.
Embodiment
Be set to distributed frame, (remote terminal unit RTU) becomes with Surveillance center 3 groups of subsystems of control system by line signal acquisition system, data transmission-remote terminal control system; The line signal acquisition system is gathered fault-signal, by Wireless Telecom Equipment in data transmission-remote terminal control system and mobile communication equipment failure message is sent to Surveillance center's control system, shows abort situation, fault phase, the failure message of fault-time on Surveillance center's control system computer screen and utilize sms technique in time, send exactly failure message.
Described line signal acquisition system adopts 32 arm processors, utilizes simplify wavelet algorithm fault current is carried out digitized measurement at 256.The current/voltage sensor is transferred to the over-voltage over-current protection module with voltage and the current signal that collects in the line signal acquisition system; the over-voltage over-current protection module is input to short trouble judge module and earth fault judge module with signal; after short trouble judge module and earth fault judge module detect short circuit and earth fault, failure message is emitted by the radio frequency transmission module.
Described data transmission-remote terminal control system comprises less radio-frequency transport module and 3G communication network transport module; The less radio-frequency transport module is provided with embedded scm; The less radio-frequency transport module receives fault-signal and the processing signals information of sending from the line signal acquisition system, and simultaneously, 3G communication network transport module sends to Surveillance center's control system with this information; Power supply is a solar cell.
Described Surveillance center control system is provided with display, PC, single-chip microcomputer, 3G modulator-demodular unit and database server, and database server is used to receive the data from each data terminal.
Each integrated circuit (IC) chip has all adopted the disturbing pulse absorption circuit, and the wiring board wiring has adopted substrate to apply and shading ring.
Claims (7)
1. the transmission line malfunction area positioning system based on the 3G communication network is characterized in that being set to distributed frame, is become with Surveillance center 3 groups of subsystems of control system by line signal acquisition system, data transmission-remote terminal control system; The line signal acquisition system is gathered fault-signal, by Wireless Telecom Equipment in data transmission-remote terminal control system and mobile communication equipment failure message is sent to Surveillance center's control system, shows abort situation, fault phase, the failure message of fault-time on Surveillance center's control system computer screen and utilize sms technique in time, send exactly failure message.
2. the transmission line malfunction area positioning system based on the 3G communication network according to claim 1, it is characterized in that described line signal acquisition system adopts 32 arm processors, utilize simplify wavelet algorithm fault current is carried out digitized measurement at 256.
3. the transmission line malfunction area positioning system based on the 3G communication network according to claim 1; it is characterized in that the current/voltage sensor is transferred to the over-voltage over-current protection module with voltage and the current signal that collects in the described line signal acquisition system; the over-voltage over-current protection module is input to short trouble judge module and earth fault judge module with signal; after short trouble judge module and earth fault judge module detect short circuit and earth fault, failure message is emitted by the radio frequency transmission module.
4. the transmission line malfunction area positioning system based on the 3G communication network according to claim 1 is characterized in that described data transmission-remote terminal control system comprises less radio-frequency transport module and 3G communication network transport module; The less radio-frequency transport module is provided with embedded scm; The less radio-frequency transport module receives fault-signal and the processing signals information of sending from the line signal acquisition system, and simultaneously, 3G communication network transport module sends to Surveillance center's control system with this information.
5. the transmission line malfunction area positioning system based on the 3G communication network according to claim 1 is characterized in that described Surveillance center control system is provided with database server, is used to receive the data from each data terminal.
6. the transmission line malfunction area positioning system based on the 3G communication network according to claim 1 is characterized in that each integrated circuit (IC) chip has all adopted the disturbing pulse absorption circuit, and the wiring board wiring has adopted substrate to apply and shading ring.
7. the transmission line malfunction area positioning system based on the 3G communication network according to claim 1 is characterized in that the power supply in described data transmission-remote terminal control system is a solar cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200673910U CN201984133U (en) | 2011-03-15 | 2011-03-15 | Power transmission line fault section locating system based on 3G communication network |
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| CN2011200673910U CN201984133U (en) | 2011-03-15 | 2011-03-15 | Power transmission line fault section locating system based on 3G communication network |
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| CN201984133U true CN201984133U (en) | 2011-09-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435912A (en) * | 2011-10-13 | 2012-05-02 | 华北电力大学（保定） | Method for positioning fault disturbance point in power grid |
| CN102928739A (en) * | 2012-11-02 | 2013-02-13 | 华北电力大学（保定） | Method and system used for locating power grid single-phase ground faults and based on wireless sensor network |
| CN103743998A (en) * | 2013-12-23 | 2014-04-23 | 华北电力大学（保定） | Cross correlation coefficient-based distribution network single-phase grounding fault positioning method and system |
-
2011
- 2011-03-15 CN CN2011200673910U patent/CN201984133U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435912A (en) * | 2011-10-13 | 2012-05-02 | 华北电力大学（保定） | Method for positioning fault disturbance point in power grid |
| CN102435912B (en) * | 2011-10-13 | 2013-07-10 | 华北电力大学（保定） | Method for positioning fault disturbance point in power grid |
| CN102928739A (en) * | 2012-11-02 | 2013-02-13 | 华北电力大学（保定） | Method and system used for locating power grid single-phase ground faults and based on wireless sensor network |
| CN103743998A (en) * | 2013-12-23 | 2014-04-23 | 华北电力大学（保定） | Cross correlation coefficient-based distribution network single-phase grounding fault positioning method and system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGCHUN SHENGDE TECHNOLOGY CO., LTD. STATE ELECT Free format text: FORMER OWNER: CHANGCHUN SHENGDE TECHNOLOGY CO., LTD. Effective date: 20120919 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120919 Address after: 113008 West Xinfu Road, Liaoning, Fushun, No. 13 Patentee after: Fushun Power Supply Company of Liaoning Electric Power Co., Ltd. Patentee after: Changchun Shengde Technology Co., Ltd. Patentee after: State Grid Corporation of China Address before: 113008 West Xinfu Road, Liaoning, Fushun, No. 13 Patentee before: Fushun Power Supply Company of Liaoning Electric Power Co., Ltd. Patentee before: Changchun Shengde Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20180315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |