CN215641783U - DC electronic transformer measuring error situation analysis and early warning device - Google Patents
DC electronic transformer measuring error situation analysis and early warning device Download PDFInfo
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- CN215641783U CN215641783U CN202121475208.0U CN202121475208U CN215641783U CN 215641783 U CN215641783 U CN 215641783U CN 202121475208 U CN202121475208 U CN 202121475208U CN 215641783 U CN215641783 U CN 215641783U
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Abstract
The application provides a direct current electronic transformer measuring error situation analysis and early warning device includes: the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device, the third digital message conversion device, the analysis device and the signal output device can respectively monitor the output end of the primary sensor, the output end of the acquisition unit, the input end of the merging unit and the output end of the merging unit in the direct-current electronic transformer, and can effectively and quickly check and analyze the measurement error state of the direct-current electronic transformer. Once the measuring error state of the direct-current electronic transformer is abnormal, the analysis device can quickly inquire the abnormal component in the direct-current electronic transformer according to the source of the abnormal signal and send out corresponding alarm through the signal output device.
Description
Technical Field
The application relates to the field of operation and maintenance of electric power systems, in particular to a device for analyzing and early warning measuring error situation of a direct-current electronic transformer.
Background
With the continuous development of the direct current transmission technology, a direct current power grid is formed in China, compared with alternating current, the direct current does not have periodic change and is more stable, the direct current does not have a reactance problem, only two leads are needed for transmission, the line loss is small, and a lot of equipment is driven by the direct current.
The huge direct current power grid needs specific equipment to transmit information to monitoring and protecting equipment, and the direct current electronic transformer is ready to operate. The existing direct current electronic transformer mainly comprises three parts, namely a primary sensor, a collecting unit and a merging unit, wherein the primary sensor is connected with the collecting unit through a lead, and the collecting unit is connected with the merging unit through an optical fiber.
At present, the direct-current electronic transformer is widely applied to direct-current engineering, covers primary sensing transformation, analog voltage acquisition, digital signal conversion, optical fiber transmission, intelligent substation merging unit operation monitoring, message sending and the like, is one of the most important high-voltage devices of a converter station, and is responsible for transmitting the primary voltage and current magnitude of the whole converter station to a measurement and control and protection unit.
However, the direct-current electronic transformer is subjected to a plurality of links in the whole transmission link, and the whole transmission link is relatively complex, once a certain link of the transmission link is abnormal, a specific abnormal position is difficult to find, deviation or abnormality of the whole measurement error of the direct-current electronic transformer can be caused, and great hidden danger is brought to safe and stable operation of a direct-current system.
SUMMERY OF THE UTILITY MODEL
The application provides a direct current electronic transformer measuring error situation analysis and early warning device for each component of monitoring direct current electronic transformer can look over fast and the analysis to direct current electronic transformer's measuring error state effectively, in time discovers that direct current electronic transformer appears unusual part and sends out the warning.
The utility model provides a direct current electronic type mutual-inductor measuring error situation analysis and early warning device, includes: the device comprises an analog voltage conversion device, a digital message conversion device, an analysis device and a signal output device;
the digital message conversion device comprises: a first digital message conversion device, a second digital message conversion device and a third digital message conversion device;
the analog voltage conversion device is connected with the output end of a primary sensor in the direct-current electronic transformer and used for acquiring an analog voltage signal output by the output end of the primary sensor and converting the analog voltage signal into an Ethernet signal;
the first digital message conversion device is connected with the output end of the acquisition unit in the direct-current electronic transformer and used for acquiring the digital message output by the output end of the acquisition unit and converting the digital message into an Ethernet signal;
the second digital message conversion device is connected with the input end of the merging unit in the direct-current electronic transformer and used for acquiring the digital message input to the input end of the merging unit and converting the digital message into an Ethernet signal;
the third digital message conversion device is connected with the output end of the merging unit in the direct-current electronic transformer and used for acquiring the digital message output by the output end of the merging unit and converting the digital message into an Ethernet signal;
the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are connected to the analysis device, and the analysis device is used for analyzing the obtained Ethernet signals;
the analysis device is connected with the signal output device, and the signal output device is used for sending out an abnormal or early warning signal.
Optionally, the analog voltage conversion device is connected with the direct current electronic transformer through a wire;
the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are connected with the direct-current electronic transformer through optical fibers;
the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are connected with the analysis device through leads;
the analysis device is connected with the signal output device through a lead.
Optionally, the device for analyzing and warning the measurement error situation of the dc electronic transformer further comprises: a synchronizing signal output device;
the synchronous signal output device is sequentially connected with the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device.
Optionally, the synchronization signal output device is connected to the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device, and the third digital message conversion device through wires.
Optionally, the synchronization signal output device is a clock synchronizer.
Optionally, the analog voltage conversion device is an analog-to-digital converter.
Optionally, the first digital message conversion device, the second digital message conversion device, and the third digital message conversion device are all photoelectric converters.
Optionally, the analyzing device is a logic judger.
Optionally, the signal output device is a wireless signal transmitter.
The application provides a direct current electronic transformer measuring error situation analysis and early warning device can monitor direct current electronic transformer's a sensor output, acquisition unit output, merging unit input and merging unit output respectively, can look over fast and the analysis to direct current electronic transformer's measuring error state effectively. Once the measuring error state of the direct-current electronic transformer is abnormal, the analysis device can quickly inquire the abnormal component in the direct-current electronic transformer according to the source of the abnormal signal and send out corresponding alarm through the signal output device.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural diagram of a device for analyzing and warning a measurement error situation of a dc electronic transformer according to an embodiment of the present application.
Detailed Description
As shown in fig. 1, for applying for the analysis and early warning device for measuring error situation of the dc electronic transformer provided in this embodiment, the analysis and early warning device for measuring error situation of the dc electronic transformer includes: the device comprises an analog voltage conversion device, a first digital message conversion device, a second digital message conversion device, a third digital message conversion device, an analysis device and a signal output device.
The analog voltage conversion device is connected with the output end of a primary sensor in the direct-current electronic transformer through a lead and is used for acquiring an analog voltage signal output by the output end of the primary sensor and converting the analog voltage signal into an Ethernet signal. The analog voltage conversion device is also connected with the analysis device through a lead, and the converted Ethernet signals are transmitted to the analysis device.
The first digital message conversion device is connected with the output end of the acquisition unit in the direct-current electronic transformer through an optical fiber and used for acquiring the digital message output by the output end of the acquisition unit and converting the digital message into an Ethernet signal. The first digital message conversion device is also connected with the analysis device through a wire and transmits the converted Ethernet signals to the analysis device.
Because optical fiber is generally used between the acquisition unit and the merging unit in the direct-current electronic transformer to carry out long-distance signal transmission, in order to prevent the occurrence of an abnormal measurement error state of the direct-current electronic transformer caused by the occurrence of a problem in the optical fiber, the second digital message conversion device is connected to the input end of the merging unit through the optical fiber, and is used for acquiring and inputting the digital message at the input end of the merging unit and converting the digital message into an Ethernet signal. The second digital message conversion device is also connected with the analysis device through a wire and transmits the converted Ethernet signals to the analysis device.
And the third digital message conversion device is connected with the output end of the merging unit in the direct-current electronic transformer through an optical fiber and is used for acquiring the digital message output by the output end of the merging unit and converting the digital message into an Ethernet signal. The third digital message conversion device is also connected with the analysis device through a wire and transmits the converted Ethernet signals to the analysis device.
The analysis device is connected with the signal output device through a lead, the analysis device can analyze the acquired Ethernet signals, if the Ethernet signals are abnormal, the abnormal signals are traced and acquired by the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device or the third digital message conversion device, the abnormal signals and the path information of the acquired abnormal signals are fed back to the signal output device, and the signal output device sends the abnormal signals and the path information of the acquired abnormal signals to a handheld terminal of an operation and maintenance worker. If the Ethernet signals are normal, no operation is performed except for continuously operating the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device, the third digital message conversion device and the analysis device.
It should be noted that the occurrence of an abnormal ethernet signal refers to an abnormal measurement error state of the dc electronic transformer, and tracing back the source of the abnormal ethernet signal refers to positioning of a component in the abnormal measurement error state of the dc electronic transformer.
Compare in prior art, the analysis of situation and the early warning device of a direct current electronic transformer measuring error situation that this application provided has increased the situation analysis to direct current electronic transformer acquisition unit output and merging unit input measuring error, is a brand-new connection scheme to analysis of direct current electronic transformer measuring error situation and early warning. Once the measuring error state of the direct-current electronic transformer is abnormal, the analysis device can quickly inquire the abnormal component in the direct-current electronic transformer according to the connection scheme in the application so as to achieve the effect of accurately positioning the abnormal component.
Preferably, a synchronization signal output device is further added in the embodiment of the present application, and the synchronization signal output device is sequentially connected to the analog voltage conversion device, the first digital packet conversion device, the second digital packet conversion device, and the third digital packet conversion device through a wire. The synchronous signal output device is used for sending out a synchronous signal, so that the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device can simultaneously acquire signals of different parts of the direct-current electronic transformer.
Preferably, in the embodiment of the present application, the synchronization signal output device is a clock synchronizer.
Preferably, in the embodiment of the present application, the analog voltage conversion device is an analog-to-digital converter.
Preferably, in this embodiment of the present application, the first digital message converting device, the second digital message converting device, and the third digital message converting device are all photoelectric converters.
Preferably, in the embodiment of the present application, the analysis device is a logic judger.
Preferably, in the embodiment of the present application, the signal output device is a wireless signal transmitter.
The application provides a direct current electronic transformer measuring error situation analysis and early warning device can monitor direct current electronic transformer's a sensor output, acquisition unit output, merging unit input and merging unit output respectively, can look over fast and the analysis to direct current electronic transformer's measuring error state effectively. Once the measuring error state of the direct-current electronic transformer is abnormal, the analysis device can quickly inquire the abnormal component in the direct-current electronic transformer according to the source of the abnormal signal and send out corresponding alarm through the signal output device.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (9)
1. The utility model provides a direct current electronic type mutual-inductor measuring error situation analysis and early warning device which characterized in that includes: the device comprises an analog voltage conversion device, a digital message conversion device, an analysis device and a signal output device;
the digital message conversion device comprises: a first digital message conversion device, a second digital message conversion device and a third digital message conversion device;
the analog voltage conversion device is connected with the output end of a primary sensor in the direct-current electronic transformer and used for acquiring an analog voltage signal output by the output end of the primary sensor and converting the analog voltage signal into an Ethernet signal;
the first digital message conversion device is connected with the output end of the acquisition unit in the direct-current electronic transformer and used for acquiring the digital message output by the output end of the acquisition unit and converting the digital message into an Ethernet signal;
the second digital message conversion device is connected with the input end of the merging unit in the direct-current electronic transformer and used for acquiring the digital message input to the input end of the merging unit and converting the digital message into an Ethernet signal;
the third digital message conversion device is connected with the output end of the merging unit in the direct-current electronic transformer and used for acquiring the digital message output by the output end of the merging unit and converting the digital message into an Ethernet signal;
the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are connected to the analysis device, and the analysis device is used for analyzing the obtained Ethernet signals;
the analysis device is connected with the signal output device, and the signal output device is used for sending out an abnormal or early warning signal.
2. The device for analyzing and warning the measurement error situation of the DC electronic mutual inductor according to claim 1,
the analog voltage conversion device is connected with the direct-current electronic transformer through a wire;
the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are connected with the direct-current electronic transformer through optical fibers;
the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are connected with the analysis device through leads;
the analysis device is connected with the signal output device through a lead.
3. The device for analyzing and warning the measurement error situation of the direct-current electronic transformer according to claim 1, further comprising: a synchronizing signal output device;
the synchronous signal output device is sequentially connected with the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device.
4. The device for analyzing and warning the measurement error situation of the direct current electronic transformer according to claim 3, wherein the synchronous signal output device is connected with the analog voltage conversion device, the first digital message conversion device, the second digital message conversion device and the third digital message conversion device through wires.
5. The device for analyzing and warning the measurement error situation of the direct current electronic transformer as claimed in claim 3, wherein the synchronous signal output device is a clock synchronizer.
6. The device for analyzing and warning the measurement error situation of the direct-current electronic transformer as claimed in claim 1, wherein the analog voltage conversion device is an analog-to-digital converter.
7. The device for analyzing and warning the measurement error situation of the direct current electronic transformer according to claim 1, wherein the first digital message conversion device, the second digital message conversion device and the third digital message conversion device are all photoelectric converters.
8. The device for analyzing and warning the measurement error situation of a direct current electronic transformer as claimed in claim 1, wherein the analyzing device is a logic judger.
9. The device for analyzing and warning the measurement error situation of the direct-current electronic transformer as claimed in claim 1, wherein the signal output device is a wireless signal transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202121475208.0U CN215641783U (en) | 2021-06-30 | 2021-06-30 | DC electronic transformer measuring error situation analysis and early warning device |
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| CN202121475208.0U CN215641783U (en) | 2021-06-30 | 2021-06-30 | DC electronic transformer measuring error situation analysis and early warning device |
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| CN215641783U true CN215641783U (en) | 2022-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902755A (en) * | 2023-02-23 | 2023-04-04 | 国网江西省电力有限公司电力科学研究院 | Alarm parameter testing method for all-fiber current transformer |
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2021
- 2021-06-30 CN CN202121475208.0U patent/CN215641783U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902755A (en) * | 2023-02-23 | 2023-04-04 | 国网江西省电力有限公司电力科学研究院 | Alarm parameter testing method for all-fiber current transformer |
| CN115902755B (en) * | 2023-02-23 | 2023-08-15 | 国网江西省电力有限公司电力科学研究院 | Alarm parameter testing method for all-fiber current transformer |
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