CN203490306U - Synchronous-measurement device applied to rail electric-power system - Google Patents
Synchronous-measurement device applied to rail electric-power system Download PDFInfo
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- CN203490306U CN203490306U CN201320542764.4U CN201320542764U CN203490306U CN 203490306 U CN203490306 U CN 203490306U CN 201320542764 U CN201320542764 U CN 201320542764U CN 203490306 U CN203490306 U CN 203490306U
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Abstract
The utility model relates to a synchronous-measurement device applied to a rail electric-power system, and the device is characterized in that the device comprises a data processing unit composed of a first processor, and a communication unit composed of a second processor; the data processing unit is connected with the communication unit; the data processing unit and the communication unit are respectively connected with a GPS synchronous clock; the data processing unit collects an alternating-current signal, a direct-current signal and a switching-value signal, which are all from the rail electric-power system, through a sampling module; and the communication unit is connected to a network. The device is advantageous by: 1, improving the capability of data processing, guaranteeing the instantaneity of data, and alleviating the communication load of the network; 2, employing various types of power-signal measurement circuit modules, and being capable of carrying out the information processing of alternating-current voltage signals, alternating currents, direct-current voltages, switching values, and other power signals; 3, employing the design of phase correction circuit on alternating-current phasor measurement, thereby eliminating the errors of phase angles, and improving the precision of data measurement.
Description
Technical field
The utility model relates to a kind of synchronous measuring apparatus that is applied to track electric system, belongs to electric power information and technical field of automation.
Background technology
Along with the mankind are day by day deep to the understanding of environmental problem, the application of electric power energy in human lives is also day by day extensive, be accompanied by the interconnected development of regional power system, the scale of electric system is also increasingly huge, and the accident in electrical network is also more greatly more difficult to inspection and repair to the disturbing effect of whole electrical network.Therefore need to carry out real-time dynamic monitoring to electrical network, gather high precision, in real time dynamic electric power system data, analyze accurately the load condition of electrical network, grid power is carried out to unified allocation of resources, each substation operation fault is carried out to early warning, analyze.
In the composition of whole network system, the step-down transformation device that not only comprises high-voltage alternating, the electric power conversion apparatus that also likely comprises various friendships-series such as straight power transformation, if therefore will the safe operation of whole electrical network be assessed and be analyzed, that just must all will carry out Power Supply Monitoring and analysis to each crucial power unit of electrical network.And generally adopt traditionally phasor measurement unit (PMU, Phasor Measurement Unit) to being positioned at the AC signal of diverse geographic location in whole electrical network, carry out collection analysis, therefore often ignored same considerable direct current component in network system.If but will research and develop the direct current monitoring equipment of a special use, may appear at the situation that needs multiple monitoring equipment in system monitoring process, the measurement of for example hand over-straight transformer station, front stage circuits need to be carried out of ac measurement, late-class circuit need to carry out DC quantity measurement, therefore will cause like this purchase cost of monitoring system to increase, even likely occur the compatibility issues such as monitoring system and multiple monitoring equipment intercommunication confusion.Therefore native system device adopts the mode that interchange phasor measurement, direct current measurement, switching value measurement combine, based on GPS synchronous clock, realize the measurement that exchanges phasor, DC quantity and switching value, and several pick information is uploaded to data center simultaneously, the problems such as many devices communicatings compatibility have been avoided, Real-Time Monitoring network system, for Real-Time Monitoring, diagnostic assessment, emergency disposal, the integrated dispatch of whole system provides necessary high-precision number of degrees pick.
The patent No. is 200520046578.7 utility model, has introduced a kind of portable PMU dynamic property measuring instrument.Measuring instrument described in this utility model only carries out the detection of alternating voltage, alternating current, switching value, has ignored occupy the detection of the direct current component of critical role in track traffic electric power system; It has also ignored the error that the devices such as mutual inductor in circuit cause phasor phase angle in exchanging phasor measurement simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of track electric system synchronous measuring apparatus that is applied to, for the condition monitoring of electric system provides necessary data message.
In order to achieve the above object, the technical solution of the utility model has been to provide a kind of synchronous measuring apparatus that is applied to track electric system, it is characterized in that: comprise the data processing unit being formed by first processor and the communication unit being formed by the second processor, data processing unit is connected with communication unit, data processing unit and communication unit all connect GPS synchronous clock, data processing unit is AC signal, direct current signal and the switching value signal from track electric system by sampling module collection, communication unit access network.
Preferably, between described data processing unit and described communication unit, by SPI interface, carry out internal data mutual.
Preferably, described sampling module comprises phase-correcting circuit, transformer circuit, two-way buffer circuit, described AC signal is input phase correcting circuit and transformer circuit respectively, phase-correcting circuit is connected with described data processing unit by shaping circuit, transformer circuit connects described data processing unit by sampling A/D chip, the input end of sampling A/D chip also connects the output terminal of a road buffer circuit, this road buffer circuit receives described direct current signal, the input end of another road buffer circuit is inputted described switching value signal, its output terminal directly connects described data processing unit.
The utility model based on GPS synchronous clock to electric system exchange, the measurement of the information data such as direct current, switching value, realization is to the high precision of each crucial electric power signal information in electrical network, high speed dynamic monitoring, for the condition monitoring of electric system provides necessary data message.
The utility model has the advantage of: the mode that 1, adopts two process chip (MCU) to combine, two MCU carry out respectively data processing and data communication, and adopt Industrial Ethernet Ethernet/IP agreement to carry out data communication, improved the data-handling capacity of device, guarantee the real-time of data, also alleviated the traffic load in network simultaneously; 2, adopt multiple electric power signal metering circuit module, can carry out the information processing of the electric power signals such as alternating voltage, alternating current, DC voltage, switching value simultaneously; 3, aspect interchange phasor measurement, adopt phase-correcting circuit design, eliminate the phase angle error in circuit, improve the precision of DATA REASONING.
Accompanying drawing explanation
Fig. 1 is a kind of system chart that is applied to the synchronous measuring apparatus of track electric system in the present embodiment;
Fig. 2 is the structured flowchart of sampling module.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
As shown in Figure 1, the utility model provides a kind of synchronous measuring apparatus that is applied to track electric system, comprises the data processing unit consisting of first processor MCU1 (model in the utility model is TMS320F28335) and the communication unit consisting of the second processor.Adopt two MCU modes, two MCU carry out data processing and communicate by letter respectively, both guaranteed like this big data quantity in real time, efficiently process, also met the requirement of real-time that big data quantity is communicated by letter simultaneously, guaranteed the reliability of system.Between data processing unit and communication unit, by SPI interface circuit, carry out internal data mutual, improved the real-time, interactive performance of data.Data processing unit and communication unit all connect GPS synchronous clock, and data processing unit is AC signal, direct current signal and the switching value signal from track electric system by sampling module collection, communication unit access network.Whole device adopts 24V Power supply, then converts 5V, 3.3V, the required power supply of each chip of 1.8V to by power module, for measurement module and communication board provide required power supply.
As shown in Figure 2, sampling module comprises phase-correcting circuit, transformer circuit, two-way buffer circuit, described AC signal is input phase correcting circuit and transformer circuit respectively, phase-correcting circuit is connected with described data processing unit by shaping circuit, transformer circuit connects described data processing unit by sampling A/D chip, the input end of sampling A/D chip also connects the output terminal of a road buffer circuit, this road buffer circuit receives described direct current signal, the input end of another road buffer circuit is inputted described switching value signal, its output terminal directly connects described data processing unit.
The utility model adopts the peripheral metering circuit modules such as DC channel circuit, communication channel circuit, switching value channel circuit, adopt the functional circuit module such as signal isolation circuit and shaping circuit simultaneously, sampled signal is carried out to functional analysis, realized the real-time measurement of the electric power signals such as this device exchanges simultaneously, direct current, switching value.In phasor signal measurement, adopted the design of phase-correcting circuit, and with resistance components and parts, replaced capacitive reactance components and parts in correcting circuit; Eliminate the phase angle error in circuit, improved the precision of phasor number pick.
Claims (3)
1. a synchronous measuring apparatus that is applied to track electric system, it is characterized in that: comprise the data processing unit being formed by first processor and the communication unit being formed by the second processor, data processing unit is connected with communication unit, data processing unit and communication unit all connect GPS synchronous clock, data processing unit is AC signal, direct current signal and the switching value signal from track electric system by sampling module collection, communication unit access network.
2. a kind of synchronous measuring apparatus that is applied to track electric system as claimed in claim 1, is characterized in that: between described data processing unit and described communication unit, by SPI interface, carry out internal data mutual.
3. a kind of synchronous measuring apparatus that is applied to track electric system as claimed in claim 1, it is characterized in that: described sampling module comprises phase-correcting circuit, transformer circuit, two-way buffer circuit, described AC signal is input phase correcting circuit and transformer circuit respectively, phase-correcting circuit is connected with described data processing unit by shaping circuit, transformer circuit connects described data processing unit by sampling A/D chip, the input end of sampling A/D chip also connects the output terminal of a road buffer circuit, this road buffer circuit receives described direct current signal, the input end of another road buffer circuit is inputted described switching value signal, its output terminal directly connects described data processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320542764.4U CN203490306U (en) | 2013-09-02 | 2013-09-02 | Synchronous-measurement device applied to rail electric-power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320542764.4U CN203490306U (en) | 2013-09-02 | 2013-09-02 | Synchronous-measurement device applied to rail electric-power system |
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| Publication Number | Publication Date |
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| CN203490306U true CN203490306U (en) | 2014-03-19 |
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| CN201320542764.4U Expired - Lifetime CN203490306U (en) | 2013-09-02 | 2013-09-02 | Synchronous-measurement device applied to rail electric-power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI742605B (en) * | 2020-04-09 | 2021-10-11 | 台灣高速鐵路股份有限公司 | Rail power monitoring system |
-
2013
- 2013-09-02 CN CN201320542764.4U patent/CN203490306U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI742605B (en) * | 2020-04-09 | 2021-10-11 | 台灣高速鐵路股份有限公司 | Rail power monitoring system |
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Granted publication date: 20140319 |
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