CN203949971U - A kind of transmission line of electricity debugging wireless measuring system - Google Patents
A kind of transmission line of electricity debugging wireless measuring system Download PDFInfo
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- CN203949971U CN203949971U CN201420096027.0U CN201420096027U CN203949971U CN 203949971 U CN203949971 U CN 203949971U CN 201420096027 U CN201420096027 U CN 201420096027U CN 203949971 U CN203949971 U CN 203949971U
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Abstract
The utility model discloses a kind of transmission line of electricity debugging wireless measuring system, comprise wireless voltage acquisition transmission node, be connected with the capacitive divider low-pressure side of Outdoor Trusses For Transformer Substation field; Wireless current acquisition transmission node, is connected with the Hall current sensor that is arranged on Current Transformer Secondary side; With wireless center main website, the server and the client computer that comprise central master station wireless communication module, be connected with central master station wireless communication module.Wireless voltage acquisition transmission node and wireless current acquisition transmission node include A/D module, acquisition controller module, the clock synchronization module being connected with acquisition controller module input and the collection transmission node wireless communication module for communicating with central master station wireless communication module.The utility model can be avoided the on-the-spot complicated installation work of transmission line of electricity debugging, has greatly reduced working strength, has improved work efficiency, can guarantee measuring system weak current equipment and survey crew personal safety.
Description
Technical field
The utility model relates to a kind of wireless measuring system, is specifically related to a kind of transmission line of electricity debugging wireless measuring system.
Background technology
Before newly-built ultra-high-tension power transmission line puts into operation, for the insulating property of examination circuit, will carry out the continued operation of separating brake combined floodgate to isolating switch at circuit head end, with the operation electromagnetic transient of simulation system.In process of the test, measure voltage, the current signal of transmission line of electricity, to reflect the insulation status of circuit.
Existing measuring system is made up of capacitive divider, current transformer, photoisolator, oscillograph etc. conventionally.For survey crew personal safety in warranty test process, and power to surveying instrument, conventionally by the equipment layout such as photoisolator, oscillograph in indoor, by cable, substation field capacitive divider low-pressure side voltage signal, Current Transformer Secondary side current signal are connected with indoor instrument.This measuring method is extremely loaded down with trivial details, part large-scale substation, and cable length can reach nearly hundred meters, and field wiring workload is large, has expended a large amount of time and efforts of tester, has reduced work efficiency, has increased working strength.Due to the electromagnetic environment impact of transformer station's complexity, in cable, may induce higher superpotential, affect the safe and reliable operation of measuring system.In process of the test, cable also may be pullled or roll to cause and open circuit, and has great risk.
Utility model content
The deficiency existing for prior art, the utility model object is to provide a kind of transmission line of electricity debugging wireless measuring system, while making transmission line of electricity debugging, do not need to arrange at the scene cable, reduce working strength, improve work efficiency, can guarantee measuring system weak current equipment and survey crew personal safety.
To achieve these goals, the utility model is to realize by the following technical solutions:
A kind of transmission line of electricity debugging wireless measuring system of the present utility model, comprises wireless voltage acquisition transmission node, is connected with the capacitive divider low-pressure side of Outdoor Trusses For Transformer Substation field; Wireless current acquisition transmission node, is connected with the Hall current sensor that is arranged on Current Transformer Secondary side; With wireless center main website, the server and the client computer that comprise central master station wireless communication module, be connected with central master station wireless communication module.
Above-mentioned wireless voltage acquisition transmission node and wireless current acquisition transmission node include A/D module, acquisition controller module, the clock synchronization module being connected with acquisition controller module input and the collection transmission node wireless communication module for communicating with central master station wireless communication module; Acquisition controller module comprises the FPGA module being connected with A/D module output terminal and the ARM module being connected with FPGA module output terminal; ARM module output termination gathers transmission node wireless communication module input end.
What above-mentioned central master station wireless communication module and collection transmission node wireless communication module specifically adopted is wireless bridge.
The utility model can be avoided the on-the-spot complicated installation work of transmission line of electricity debugging, has greatly reduced working strength, has improved work efficiency, can guarantee measuring system weak current equipment and survey crew personal safety.In addition, system communication frequency range of the present utility model is at 2.4GHz, the impact of basic Bu Shou transformer station electromagnetic interference (EMI), buildings etc.
Brief description of the drawings
Fig. 1 is transmission line of electricity debugging wireless measuring system schematic diagram of the present utility model;
Fig. 2 is existing capacitive divider structural representation;
Fig. 3 is the current transformer structure schematic diagram that existing secondary side is provided with Hall current sensor;
Fig. 4 is the theory diagram of wireless voltage acquisition transmission node, wireless current acquisition transmission node;
Fig. 5 is the clock synchronization module schematic diagram of an embodiment of the utility model;
Fig. 6 is acquisition controller module software fundamental diagram in wireless voltage acquisition transmission node, wireless current acquisition transmission node.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
Referring to Fig. 1, a kind of transmission line of electricity debugging of the present utility model comprises wireless center main website, wireless current acquisition transmission node, wireless voltage acquisition transmission node with wireless measuring system.
Wherein, wireless center main website is in the face of user, be responsible for controlling wireless current acquisition transmission node and wireless voltage acquisition transmission node and receive wireless current acquisition transmission node and wireless voltage acquisition transmission node data, carrying out data storage, waveform demonstration, data analysis, auto report completing etc. simultaneously.
Wireless current acquisition transmission node and wireless voltage acquisition transmission node are connected with capacitive divider and current probe respectively, gather related data and by wireless module, data are uploaded to central master station in real time.In measuring process, between wireless current acquisition transmission node and wireless voltage acquisition transmission node, use the clock synchronization module based on IEEE1588 agreement to carry out time synchronized.
Referring to Fig. 2, in measuring process, wireless voltage acquisition transmission node is connected with Outdoor Trusses For Transformer Substation field capacitive divider, gathers voltage signal.
Referring to Fig. 3, wireless current acquisition transmission node is connected with the Hall current sensor that is installed on Current Transformer Secondary side, gathers current signal.
Wireless current acquisition transmission node and wireless voltage acquisition transmission node upload to central master station by wireless module by data after gathering related data in real time.
Referring to Fig. 4, wireless current acquisition transmission node of the present utility model and wireless voltage acquisition transmission node comprise A/D module, gather transmission node wireless communication module, acquisition controller module and clock synchronization module.
A/D module: the voltage, the current signal that gather are carried out to analog to digital conversion.
Gather transmission node wireless communication module: adopt wireless bridge structure, realize the intercommunication mutually between wireless current acquisition transmission node, wireless voltage acquisition transmission node and wireless center main website.
Acquisition controller: the framework mode that adopts ARM module to combine with FPGA module, be the core of wireless collection transmission system, realize high-accuracy data acquisition, determine transient state trigger event, upload data in real time central master station, local save data etc. by wireless communication module.
Clock synchronization module: the data that gather are carried out to timestamp mark, so that simultaneous display, the analysis of multinode data in central master station.
Wireless center main website comprises central master station wireless communication module, server and client computer.Wherein: server is responsible for processing the large data of distributed capture node, comprises the functions such as distributed data reception, alignment, storage, forwarding; Client computer arranges server, acquisition node, the behavior of monitoring acquisition node, demonstration and analysis waveform data etc.
Principle of work of the present utility model is as follows:
First adopt capacitive divider, Hall current sensor to carry out step-down to transmission line of electricity voltage signal, transmission line of electricity electric current is shunted, above-mentioned signal is connected with wireless current acquisition transmission node, wireless voltage acquisition transmission node, carries out data real-time sampling and A/D analog to digital conversion.For ease of above-mentioned data analysis, between wireless current acquisition transmission node, wireless voltage acquisition transmission node, use the clock synchronization module based on IEEE1588 agreement to carry out time synchronized to above-mentioned data.After this, by FPGA module controls and obtain data, then data are put into the internal memory of ARM, processed by ARM, after this upload to central master station by wireless communication module.Central master station to above-mentioned data store, waveform demonstration, data analysis, auto report completing etc.Transmission line of electricity debugging wireless measuring system can be avoided the installation work of substation field complexity, greatly reduces experiment work amount, has improved test efficiency.
In the present embodiment, the A/D module of wireless voltage acquisition transmission node, wireless current acquisition transmission node all adopts MAX125 chip, can realize the synchronous acquisition of multiple signals, sampling precision is set to 16, input voltage range is 5V, at the external 16MHz crystal oscillator of chip, the highest single pass sampling rate can reach 250ksps.
In the present embodiment, what central master station wireless communication module and collection transmission node wireless communication module specifically adopted is wireless bridge, and communications band is 2.4GHz, supports point-to-point and network service point-to-multipoint.Central master station wireless communication module provides a 10/100Mb/s network IP interface, is connected with server by netting twine; Collection transmission node wireless communication module in wireless current acquisition transmission node and wireless voltage acquisition transmission node provides a 10/100Mb/s network IP interface, is connected with acquisition controller.Between wireless bridge, realize intercommunication mutually.
In the present embodiment, the framework mode that acquisition controller adopts ARM to combine with FPGA.Wherein, ARM adopts Cortex A8 processor, is responsible for communicating with central master station, and the collection of management data and transmission, determine that trigger event occurs.FPGA controls collection, time synchronized, the timestamp mark of A/D sampled data.A/D module is carried out analog to digital conversion to voltage, current signal, control and obtain data by FPGA, simultaneously, obtain clock synchronization information by clock synchronization module, frame head by timestamp mark to every frame data, then data are put into the internal memory of ARM, by the collection control software systems processing moving in ARM, after this uploaded to central master station by wireless module.
Referring to Fig. 5, in the present embodiment, adopt the M50 high precision clock synchronization module based on IEEE1588 agreement, synchronization accuracy can reach Microsecond grade under radio network conditions.Clock synchronous source adopts GPS, as time service master clock, each node is carried out to clock synchronous by wireless center main website.Clock synchronization module provides accurate pulse per second (PPS), TOD (Time of Day) and 10MHz pulsating wave.
In the present embodiment, server adopts the industry portable server host based on X86 platform, and monokaryon cpu frequency is 2GHz, and server is equipped with wireless communication module and is responsible for the radio communication between central master station and acquisition node, adopts Unix operating system; Client computer is selected x86PC machine, adopts Windows7 operating system.
Referring to Fig. 6, in it is wireless voltage acquisition transmission node, wireless current acquisition transmission node, software systems comprise common waveform buffer zone and important waveform buffer zone two parts.Wherein, measurement data can be uploaded to measuring system in real time in common waveform buffer zone, and transfer rate per second is about 40k; Measurement data is preserved in important waveform buffer zone, prevents the loss of significant data.Important waveform buffer zone arranges the test figure (about 400k) of preserving 10s.While losing sampled data in transmitting procedure, send order with obtaining information by central master station monitoring client to gathering control end.
It is upper that data acquisition program in the present embodiment on wireless voltage acquisition node, wireless electric current acquisition node operates in QNX, sends packet to central master station by Socket API.Central master station server, data total program operates on Web server, and network connects employing Mina storehouse.The control of central master station is to carry out Configuration Online by input URL on browser.Client computer waveform running software, on Windows, is connected with central master station by Mina storehouse.
More than show and described 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; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of 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. a transmission line of electricity debugging wireless measuring system, is characterized in that, comprises
Wireless voltage acquisition transmission node, is connected with the capacitive divider low-pressure side of Outdoor Trusses For Transformer Substation field;
Wireless current acquisition transmission node, is connected with the Hall current sensor that is arranged on Current Transformer Secondary side;
With wireless center main website, the server and the client computer that comprise central master station wireless communication module, be connected with central master station wireless communication module;
Described wireless voltage acquisition transmission node and wireless current acquisition transmission node include A/D module, acquisition controller module, the clock synchronization module being connected with acquisition controller module input and the collection transmission node wireless communication module for communicating with central master station wireless communication module;
Described acquisition controller module comprises the FPGA module being connected with A/D module output terminal and the ARM module being connected with FPGA module output terminal;
Described ARM module output termination gathers transmission node wireless communication module input end.
2. transmission line of electricity debugging wireless measuring system according to claim 1, is characterized in that,
What described central master station wireless communication module and collection transmission node wireless communication module specifically adopted is wireless bridge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420096027.0U CN203949971U (en) | 2014-03-04 | 2014-03-04 | A kind of transmission line of electricity debugging wireless measuring system |
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| CN201420096027.0U CN203949971U (en) | 2014-03-04 | 2014-03-04 | A kind of transmission line of electricity debugging wireless measuring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730328A (en) * | 2015-02-04 | 2015-06-24 | 景德镇陶瓷学院 | Intelligent wireless voltage collecting instrument |
| CN105842573A (en) * | 2016-06-13 | 2016-08-10 | 国网江苏省电力公司电力科学研究院 | Wireless synchronous measuring and recording device and method for substation starting type debugging |
| CN107230336A (en) * | 2017-06-01 | 2017-10-03 | 张坚 | Electrical equipment managing device and system |
-
2014
- 2014-03-04 CN CN201420096027.0U patent/CN203949971U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730328A (en) * | 2015-02-04 | 2015-06-24 | 景德镇陶瓷学院 | Intelligent wireless voltage collecting instrument |
| CN105842573A (en) * | 2016-06-13 | 2016-08-10 | 国网江苏省电力公司电力科学研究院 | Wireless synchronous measuring and recording device and method for substation starting type debugging |
| CN107230336A (en) * | 2017-06-01 | 2017-10-03 | 张坚 | Electrical equipment managing device and system |
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