CN204359894U - A kind of Distributed power circuit travelling wave ranging system - Google Patents
A kind of Distributed power circuit travelling wave ranging system Download PDFInfo
- Publication number
- CN204359894U CN204359894U CN201520028419.8U CN201520028419U CN204359894U CN 204359894 U CN204359894 U CN 204359894U CN 201520028419 U CN201520028419 U CN 201520028419U CN 204359894 U CN204359894 U CN 204359894U
- Authority
- CN
- China
- Prior art keywords
- traveling wave
- distribution line
- wave signal
- signal
- current
- 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.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000013500 data storage Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000004807 localization Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides a kind of Distributed power circuit travelling wave ranging system, comprises the travelling wave signal harvester being separately positioned on transformer substation side and distribution wire trackside, and GPS time service module; The travelling wave signal harvester of transformer substation side, for gathering the voltage signal on transformer substation side bus; The travelling wave signal harvester of distribution wire side, for gathering the current signal on distribution wire; GPS time service module, sends pps pulse per second signal, with synchronous acquisition voltage signal and current signal to travelling wave signal harvester.Compared with prior art, a kind of Distributed power circuit travelling wave ranging system that the utility model provides, every bar distribution line is installed at least one travelling wave signal harvester, forms the distributed capture to distribution wire current signal, improve precision and the validity of fault localization.
Description
Technical Field
The utility model relates to a traveling wave ranging system, concretely relates to distributing type distribution lines traveling wave ranging system.
Background
Electrical energy is voltage and current traveling waves that move in the form of waves. Traveling wave fault components generated by line fault points contain abundant fault information and are attracted attention. Such information includes the time at which the fault occurred, the faulted phase, the faulted line, the faulted phase, etc. Compared with power frequency electric quantity, the traveling wave has fast speed, and has the unique advantages of no influence of transition resistance, no influence of CT saturation, no influence of system oscillation, no influence of long line distributed capacitance and the like. Recently, significant progress has been made in the study of traveling waves. The new technology of the new field of traveling wave distance measurement is introduced into the fault wave recording device, so that the function of the fault wave recording device is greatly enriched and improved, and particularly in the aspect of fault distance measurement, the revolution of the fault wave recording device brings greater social and economic benefits to the power department
At present, the traveling wave ranging is mainly applied to a neutral point direct grounding system (110kV or more) of an electric power system, is mainly based on double-end ranging, is installed in a transformer substation, and transmits data through a wired network in the substation. For the distribution line, due to the complex structure of the feeder line, only a line selection device is generally installed, and almost no fault distance measuring and positioning device of the distribution line exists.
The ranging device is mostly installed in a transformer substation, double-end data communication is carried out through an inter-station Ethernet, the distribution network structure is complex and has numerous branches, the structure is not a simple structure with two points similar to one line of a high-voltage power transmission system, a looped network or a radiation structure is mainly used, and the tail end of a line is only connected with a step-down transformer, so that the double-end ranging system on the traditional high-voltage power transmission system cannot be directly used for the power distribution network, the position where the fault is accurately detected on line by the traveling wave ranging system needs to be provided, the power supply quality of a user can be improved, meanwhile, the power equipment is protected, the fault range of the power grid is prevented from being further expanded.
Disclosure of Invention
In order to meet the needs of the prior art, the utility model provides a distributed distribution line traveling wave ranging system, which comprises traveling wave signal acquisition devices and a GPS time service module, wherein the traveling wave signal acquisition devices are respectively arranged at a transformer substation side and a distribution line side;
the traveling wave signal acquisition device at the transformer substation side is used for acquiring voltage signals on a bus at the transformer substation side;
the traveling wave signal acquisition device at the power distribution line side is used for acquiring current signals on the power distribution line;
and the GPS time service module sends a pulse per second signal to the traveling wave signal acquisition device so as to synchronously acquire the voltage signal and the current signal.
Preferably, the traveling wave signal acquisition device on the power distribution line side comprises a current transformer, a data acquisition unit, a data storage unit and a data processing unit; the input end of the data acquisition unit is connected with the current transformer; the output end of the data acquisition unit is respectively connected with the data storage unit and the data processing unit;
preferably, the current transformer is arranged on a power distribution line and is used for collecting current signals passing through the power distribution line;
the data acquisition unit comprises a filter and an A/D conversion circuit; the filter is used for filtering interference signals in the current signals; the A/D conversion circuit converts the filtered current signal into a digital signal;
the data processing unit comprises a DSP chip and a GPRS module; the GPRS module sends the current signal sampled by the DSP chip to a monitoring platform of a transformer substation through a GPRS network;
preferably, the traveling wave signal acquisition device on the transformer substation side comprises a data acquisition unit, a data storage unit and a data processing unit; the input end of the data acquisition unit is connected with a side bus of the transformer substation; the output end of the data acquisition unit is respectively connected with the data storage unit and the data processing unit;
preferably, the data acquisition unit comprises a filter and an a/D conversion circuit; the filter is used for filtering interference signals of voltage signals on the bus at the side of the transformer substation; the A/D conversion circuit converts the filtered voltage signal into a digital signal;
the data processing unit comprises a DSP chip and a GPRS module; the GPRS module sends the voltage signal sampled by the DSP chip to a monitoring platform of a transformer substation through a GPRS network;
preferably, the system further comprises a solar power supply device for supplying power to the traveling wave signal acquisition device on the power distribution line side; the solar power supply device comprises a solar panel, a storage battery and a power unit;
preferably, each distribution line is provided with at least one traveling wave signal acquisition device.
Compared with the closest prior art, the utility model discloses an excellent effect is:
the utility model provides a distributed distribution lines travelling wave ranging system installs at least one travelling wave signal acquisition device on each distribution lines, forms the distributed acquisition to distribution lines current signal, has improved the precision and the validity of trouble range finding; a traveling wave signal acquisition device is also installed on the substation side bus, the monitoring platform of the substation performs wavelet transformation on the current signal of the distribution line and the voltage signal on the substation side bus, and transient traveling wave header information of the distribution line at the moment of fault can be calculated, so that the fault point of the distribution line can be accurately positioned.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1: the embodiment of the utility model provides an in distributed distribution lines travelling wave ranging system structure picture.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The utility model provides a distributing type distribution lines travelling wave ranging system, as shown in FIG. 1, including setting up the travelling wave signal pickup assembly in transformer substation side and distribution line side respectively to and GPS time service module and solar power unit. Wherein,
the traveling wave signal acquisition device at the transformer substation side is used for acquiring voltage signals on a bus at the transformer substation side; the traveling wave signal acquisition device at the power distribution line side is used for acquiring current signals on the power distribution line; and the GPS time service module sends a pulse per second signal to the traveling wave signal acquisition device, so that the traveling wave signal acquisition device can synchronously acquire the voltage signal and the current signal.
The traveling wave signal acquisition device sends the voltage signal and the current signal to a monitoring platform of the transformer substation, and the monitoring platform carries out wavelet transformation on the voltage signal and the current signal so as to analyze the position of the distribution line with a fault. In this embodiment, at least one traveling wave signal acquisition device is installed on every distribution line, forms distribution line current signal's distributed acquisition to improve fault location's precision and validity.
Traveling wave signal acquisition device on power distribution line side
The current transformer, the data acquisition unit, the data storage unit and the data processing unit are included. The input end of the data acquisition unit is connected with the current transformer; the output end of the data acquisition unit is respectively connected with the data storage unit and the data processing unit.
1. Current transformer
The current transformer is arranged on the power distribution line and used for collecting current signals passing through the power distribution line.
In this embodiment, the current transformer is an LZKW-10II type outdoor open-type current transformer, the current error is less than 5 ‰, the lightning strike resistance voltage is 75kv, and the rated output current is 1A.
2. Data acquisition unit
Including filters and a/D conversion circuits.
And the filter is used for filtering interference signals in the current signals on the power distribution line.
The A/D conversion circuit converts the filtered current signal into a digital signal.
3. Data processing unit
The system comprises a DSP chip and a GPRS module.
And the GPRS module sends the current signal sampled by the DSP chip to a monitoring platform of the transformer substation through a GPRS network.
In this embodiment, the GPRS module uses an ME3000GPRS communication module, and supports a downlink data transmission rate of 85.6kbps and an uplink data transmission rate of 42.8 kbps.
Second, traveling wave signal acquisition device of transformer substation side
Comprises a data acquisition unit, a data storage unit and a data processing unit. The input end of the data acquisition unit is connected with a bus at the side of the transformer substation; the output end of the data acquisition unit is respectively connected with the data storage unit and the data processing unit.
1. Data acquisition unit
Including filters and a/D conversion circuits.
And the filter is used for filtering interference signals of voltage signals on the bus at the side of the transformer substation.
The A/D conversion circuit converts the filtered voltage signal into a digital signal.
2. Data processing unit
The system comprises a DSP chip and a GPRS module.
And the GPRS module sends the voltage signal sampled by the DSP chip to a monitoring platform of a transformer substation through a GPRS network.
In this embodiment, the GPRS module uses an ME3000GPRS communication module, and supports a downlink data transmission rate of 85.6kbps and an uplink data transmission rate of 42.8 kbps.
Solar power supply device
The solar power supply device supplies power to the traveling wave signal acquisition device on the power distribution line side and comprises a solar cell panel, a storage battery and a power unit.
In this embodiment, the solar cell panel is composed of amorphous silicon thin film solar cells.
Four, GPS time service module
In the embodiment, the GPS time service module adopts a M12MT special time service board card, the 1PPS second pulse time service precision can reach 10ns, and the GPS time service module is connected with the traveling wave signal acquisition device through an RS232 serial port to provide high-precision synchronous clock signals for each distributed measurement point of the distribution line.
Finally, it should be noted that: the described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (7)
1. A distributed distribution line traveling wave distance measurement system is characterized by comprising traveling wave signal acquisition devices and a GPS time service module, wherein the traveling wave signal acquisition devices are respectively arranged on a substation side and a distribution line side;
the traveling wave signal acquisition device at the transformer substation side is used for acquiring voltage signals on a bus at the transformer substation side;
the traveling wave signal acquisition device at the power distribution line side is used for acquiring current signals on the power distribution line;
and the GPS time service module sends a pulse per second signal to the traveling wave signal acquisition device so as to synchronously acquire the voltage signal and the current signal.
2. The system of claim 1, wherein the traveling wave signal acquisition device on the power distribution line side includes a current transformer, a data acquisition unit, a data storage unit, and a data processing unit; the input end of the data acquisition unit is connected with the current transformer; and the output end of the data acquisition unit is respectively connected with the data storage unit and the data processing unit.
3. The system of claim 2, wherein the current transformer is mounted on the power distribution line and collects current signals passing over the power distribution line;
the data acquisition unit comprises a filter and an A/D conversion circuit; the filter is used for filtering interference signals in the current signals; the A/D conversion circuit converts the filtered current signal into a digital signal;
the data processing unit comprises a DSP chip and a GPRS module; and the GPRS module sends the current signal sampled by the DSP chip to a monitoring platform of a transformer substation through a GPRS network.
4. The system of claim 1, wherein the traveling wave signal acquisition device on the substation side comprises a data acquisition unit, a data storage unit and a data processing unit; the input end of the data acquisition unit is connected with a side bus of the transformer substation; and the output end of the data acquisition unit is respectively connected with the data storage unit and the data processing unit.
5. The system of claim 4, wherein the data acquisition unit comprises a filter and an a/D conversion circuit; the filter is used for filtering interference signals of voltage signals on the bus at the side of the transformer substation; the A/D conversion circuit converts the filtered voltage signal into a digital signal;
the data processing unit comprises a DSP chip and a GPRS module; and the GPRS module sends the voltage signal sampled by the DSP chip to a monitoring platform of a transformer substation through a GPRS network.
6. The system of claim 1, further comprising a solar power supply device for supplying power to the traveling wave signal collection device on the power distribution line side; the solar power supply device comprises a solar panel, a storage battery and a power unit.
7. The system of claim 1, wherein at least one traveling wave signal acquisition device is installed on each distribution line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028419.8U CN204359894U (en) | 2015-01-15 | 2015-01-15 | A kind of Distributed power circuit travelling wave ranging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028419.8U CN204359894U (en) | 2015-01-15 | 2015-01-15 | A kind of Distributed power circuit travelling wave ranging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204359894U true CN204359894U (en) | 2015-05-27 |
Family
ID=53261356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520028419.8U Active CN204359894U (en) | 2015-01-15 | 2015-01-15 | A kind of Distributed power circuit travelling wave ranging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204359894U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561417A (en) * | 2017-08-11 | 2018-01-09 | 国家电网公司 | A kind of distributed partial discharge detecting system |
| CN107703419A (en) * | 2017-09-18 | 2018-02-16 | 云南电网有限责任公司 | A kind of transient state record analysis and failure accurate positioning device and method |
| CN109683060A (en) * | 2019-01-14 | 2019-04-26 | 国网江西省电力有限公司南昌供电分公司 | A kind of distribution network line state monitoring method and system |
| CN110161376A (en) * | 2019-06-24 | 2019-08-23 | 四川电安智能科技有限公司 | A kind of traveling wave fault moment extraction algorithm |
| CN116482471A (en) * | 2023-06-21 | 2023-07-25 | 四川中电启明星信息技术有限公司 | Household transformer relation identification method based on voltage space-time aggregation curve |
-
2015
- 2015-01-15 CN CN201520028419.8U patent/CN204359894U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561417A (en) * | 2017-08-11 | 2018-01-09 | 国家电网公司 | A kind of distributed partial discharge detecting system |
| CN107703419A (en) * | 2017-09-18 | 2018-02-16 | 云南电网有限责任公司 | A kind of transient state record analysis and failure accurate positioning device and method |
| CN109683060A (en) * | 2019-01-14 | 2019-04-26 | 国网江西省电力有限公司南昌供电分公司 | A kind of distribution network line state monitoring method and system |
| CN110161376A (en) * | 2019-06-24 | 2019-08-23 | 四川电安智能科技有限公司 | A kind of traveling wave fault moment extraction algorithm |
| CN110161376B (en) * | 2019-06-24 | 2021-05-28 | 四川电安智能科技有限公司 | Traveling wave fault time extraction algorithm |
| CN116482471A (en) * | 2023-06-21 | 2023-07-25 | 四川中电启明星信息技术有限公司 | Household transformer relation identification method based on voltage space-time aggregation curve |
| CN116482471B (en) * | 2023-06-21 | 2023-09-08 | 四川中电启明星信息技术有限公司 | Household transformer relation identification method based on voltage space-time aggregation curve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204359894U (en) | A kind of Distributed power circuit travelling wave ranging system | |
| CN203350392U (en) | Fault locating system for high tension transmission line | |
| CN202486199U (en) | Data acquisition unit of electronic type mutual inductor | |
| CN102879667B (en) | Lightning protection device on-line remote monitoring recorder | |
| CN106771870A (en) | A kind of distribution net work earthing fault localization method and system | |
| CN102135571B (en) | Anti-interference measurement method for zero sequence impedance of super-high-voltage/ultrahigh-voltage multi-loop power transmission line | |
| CN102564493B (en) | Online monitoring system for galloping of overhead power transmission line | |
| CN203772931U (en) | Online power distribution network fault wave recording device based on wireless three-phase synchronous technology | |
| CN102928741A (en) | Satellite time synchronization based electric power line fault location system and method | |
| CN103926449B (en) | The self-adaptive monitoring method of power cable earth current | |
| US20130193951A1 (en) | Convolution Integral for Synchronized Phasor | |
| CN106093700A (en) | A kind of fault wave recording device based on voltage traveling wave principle and distance-finding method | |
| CN102175923A (en) | Transmission line dynamic loss measurement system and method | |
| CN111289831A (en) | Distribution line tail end sensing terminal and line state monitoring method | |
| CN202929117U (en) | Positive-sequence impedance parameter measure apparatus for transmission line | |
| CN107171640A (en) | A kind of photovoltaic module monitoring device and photovoltaic generating system | |
| CN203434750U (en) | Coal mine override trip-preventing intelligent monitoring system based on synchronous measurement information system | |
| CN202486206U (en) | Electric transmission line multi-channel data collecting system based on electronic mutual inductor | |
| CN103475247A (en) | Active and reactive dispatchable control device of distributed photovoltaic power station | |
| CN110794482A (en) | Gradient meteorological monitoring system based on power transmission tower | |
| CN208044844U (en) | A kind of intelligent photovoltaic data collection station | |
| CN204462307U (en) | Based on the cable-transmission line fault section location system of synchronized sampling | |
| CN103840556A (en) | Method for sharing multi-interval transient traveling wave signals of intelligent substation in real time | |
| CN104280665A (en) | Fault detecting system for power distribution network and detecting method thereof | |
| CN211014477U (en) | Built-in fault recording device of power distribution terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171117 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: Hai Bei electric company of Guo Wang Qinghai Province Utilities Electric Co. Patentee after: State Grid Corporation of China Co-patentee after: NARI Technology Development Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: Hai Bei electric company of Guo Wang Qinghai Province Utilities Electric Co. Patentee before: State Grid Corporation of China Co-patentee before: Nanjing Nari Co., Ltd. |