CN110690757A - Data monitoring device of electric power transmission and distribution system - Google Patents
Data monitoring device of electric power transmission and distribution system Download PDFInfo
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Abstract
The embodiment of the invention relates to the field of electric power, and discloses a data monitoring device of an electric power transmission and distribution system. The data monitoring device of the power transmission and distribution system comprises: the gain component is in communication connection with the data analysis component; the gain component is used for adjusting the received transmission signals by preset gain and transmitting the adjusted transmission signals to the data analysis component, and the transmission signals are acquired by the acquisition device in the transmission and distribution process; and the data analysis component analyzes the transmission safety of the adjusted transmission signal, determines the to-be-executed instruction of each device of the power transmission and distribution system according to the analysis result and outputs the instruction. According to the embodiment, a wide-range data acquisition mode can be provided, and the application range of data monitoring is widened.
Description
Technical Field
The embodiment of the invention relates to the field of electric power, in particular to a data monitoring device of an electric power transmission and distribution system.
Background
The power transmission and distribution comprises three processes of power transmission, power transformation and power distribution, wherein the power transmission refers to the transmission of electric energy, and a power plant which is far away is connected with a load center through the power transmission, so that the development and the utilization of the electric energy exceed the limit of regions; the power transformation refers to a process of converting voltage from low level to high level (namely boosting) or converting voltage from high level to low level by using certain equipment; the power distribution is a distribution means for distributing power to users in an electric energy consumption area, and directly serves the users.
The electric power transmission and distribution system can realize three functions of power transmission, power transformation and power distribution. Generally, voltage signals and current signals of an electric power transmission and distribution system in the transmission and distribution process are collected, and the collected signals are analyzed and processed to monitor the electric power transmission and distribution system, so that the normal operation of each device of the electric power transmission and distribution system in the transmission or distribution process is guaranteed.
The inventor finds that at least the following problems exist in the prior art: because the power transmission and distribution system mainly takes high voltage and ultrahigh voltage in the power transmission and distribution process, in order to acquire current and voltage data in the power transmission and distribution process, a high-voltage signal needs to be converted into a small signal, so that the range of the acquired data is narrow, and the actual requirement cannot be met.
Disclosure of Invention
The embodiment of the invention aims to provide a data monitoring device of a power transmission and distribution system, which can provide a wide-range data acquisition mode and improve the application range of data monitoring.
In order to solve the above technical problem, an embodiment of the present invention provides a data monitoring apparatus for an electric power transmission and distribution system, including: the gain component is in communication connection with the data analysis component; the gain component is used for adjusting the received transmission signals by preset gain and transmitting the adjusted transmission signals to the data analysis component, and the transmission signals are acquired by the acquisition device in the power transmission or distribution process; and the data analysis component analyzes the transmission safety of the adjusted transmission signal, determines the to-be-executed instruction of each device of the power transmission and distribution system according to the analysis result and outputs the instruction.
Compared with the prior art, the embodiment of the invention has the advantages that the transmission signal in the power transmission and distribution system process is collected at present, the transmission signal in the power transmission or distribution process is generally required to be converted into the small signal which can be collected, the gain of the small signal is usually very small, the transmission signal with small gain is not beneficial to the analysis of the data analysis component, so that the analysis on the transmission signal of the power transmission and distribution system is not accurate, the gain component in the embodiment can adjust the gain of the transmission signal, the adjusted transmission signal meets the analysis requirement of the data analysis component, the range of the analysis on the transmission signal is greatly increased, the data monitoring range of the power transmission and distribution system is increased, and the efficiency and the precision of the data monitoring in the power transmission or distribution process are improved.
In addition, the gain module includes: the device comprises a selection module, a gain module and a conversion module; the output end of the selection module is connected with the input end of the gain module, and the output end of the gain module is connected with the input end of the conversion module, wherein the input end of the selection module is used as the input end of the gain component, and the output end of the conversion module is used as the output end of the gain component; if the transmission signal is a direct current signal, the selection module is in a first state allowing the direct current signal to pass through, and if the transmission signal is an alternating current signal, the selection module is in a second state allowing the alternating current signal to pass through; the gain module amplifies the transmission signal input from the input end of the gain module and transmits the amplified transmission signal to the conversion module; the conversion module converts the amplified transmission signal into a digital signal and transmits the digital signal to the input end of the data analysis component. Because the selection module can select direct current signals to pass or alternating current signals to pass according to needs, the gain component is suitable for any type of transmission signals, and the application range of the data monitoring device of the power transmission and distribution system is widened.
In addition, the selection module includes: the first switch circuit is formed by connecting a first switch in parallel with a first capacitor, and the second switch circuit is formed by connecting a second switch in parallel with a second capacitor; the input end of the first switch circuit is used for receiving a first signal of a transmission signal, the input end of the second switch circuit is used for receiving a second signal of the transmission signal, the input end of the first switch circuit and the input end of the second switch circuit are connected through a bidirectional voltage stabilizer, and the first signal and the second signal are determined based on a preset reference signal. The selection module receives the transmission signals through the two switching circuits, so that the range of the received transmission signals is favorably widened; in addition, the first switch circuit and the second switch circuit are both in the structure type of a capacitor parallel switch, so that the direct current and the alternating current are distinguished, the circuit structure is simple, and the cost is reduced.
In addition, the gain module further comprises: a filtering module; the first input end of the filtering module is connected with the output end of the first switch circuit, the second input end of the filtering module is connected with the output end of the second switch circuit, the first output end of the filtering module is connected with the first input end of the gain module, and the second output end of the filtering module is connected with the second input end of the gain module; the filtering module is used for respectively filtering clutter in a preset frequency range in the first signal and the second signal. Clutter in the transmission signal can be filtered through the filtering module, and therefore the accuracy of follow-up analysis on the transmission signal is improved.
In addition, the structure of the filtering module specifically includes: the first sub-circuit is formed by connecting a first resistor and a third capacitor in parallel, the first end of the first sub-circuit is connected with a second resistor in series, the second end of the first sub-circuit is grounded, and a node with the same voltage as the first end of the first sub-circuit is connected with the first input end of the gain module; the first end of the second sub-circuit is connected with the fourth resistor in series, the second end of the second sub-circuit is grounded, and a node with the same voltage as the first end of the second sub-circuit is connected with the second input end of the gain module; a fifth capacitor is electrically connected between the first terminal of the first sub-circuit and ground and a sixth capacitor is electrically connected between the first terminal of the second sub-circuit and ground. The filtering module comprises a first sub-circuit and a second sub-circuit, clutter can be filtered out rapidly through the first sub-circuit and the second sub-circuit, and the circuit structure of the first sub-circuit and the circuit structure of the second sub-circuit are simple and easy to achieve.
In addition, the data analysis component includes: a first processing module and a second processing module; the input end of the first processing module is in communication connection with the output end of the gain assembly, the output end of the first processing module is in communication connection with the input end of the second processing module, and the output end of the second processing module is used for outputting instructions to be executed of each device in flexible transmission; the first processing module is used for analyzing the transmission safety of the adjusted transmission signal and transmitting the analyzed first processing data to the second processing module; the second processing module is used for verifying whether the first processing data is accurate or not, and if the verification result is determined to be inaccurate, the verification result is fed back to the first processing module; and if the verification result is determined to be accurate, determining the to-be-executed instruction of each device for flexible transmission according to the first processing data and outputting the instruction. The data analysis component comprises two processing modules, and the accuracy of analysis of transmission safety of the first processing module and the second processing module can be verified mutually, so that the accuracy of the data analysis component in analyzing the transmission signals is improved.
In addition, the first processing module is a field programmable gate array chip, and the second processing module is a digital signal processing chip. The data processing speed of the field programmable gate array chip is high, and the digital signal processing chip processes data quickly, so that the speed of analyzing and transmitting signals by the data analysis component is greatly improved.
In addition, the gain component acquires the transmission signals acquired by the acquisition device through the connector.
In addition, the data monitoring device of the power transmission and distribution system further includes: the multi-path light input and output module is in communication connection with the first processing module and is used for collecting optical signals or outputting optical signals; and/or the peripheral interface is connected with the first processing module and used for sending the data of the first processing module or receiving the data from the outside. The data monitoring device of the power transmission and distribution system further comprises a multi-path light inlet and outlet module and/or an external interface, so that the data monitoring device of the power transmission and distribution system can acquire transmission signals in various modes, and the application range of the data monitoring device of the power transmission and distribution system is widened.
In addition, the data monitoring device of the power transmission and distribution system further includes: the first communication interface is in communication connection with the first processing module; and/or the second communication interface is in communication connection with the second processing module; the first communication interface is used for providing a communication interface for the universal input/output port and/or the differential input/output port, and the second communication interface is used for providing a communication interface for the controller local area network bus and/or the multichannel buffering serial port. A plurality of communication interfaces are provided, and the application range of the data monitoring device of the power transmission and distribution system is widened.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a data monitoring device of an electric power transmission and distribution system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a gain component in a data monitoring device of an electric power transmission and distribution system according to a first embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a selected module in a data monitoring device of an electric power transmission and distribution system according to a first embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a gain module in a data monitoring device of an electric power transmission and distribution system according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a data analysis component in a data monitoring device of an electric power transmission and distribution system according to a first embodiment of the present invention;
fig. 6 is a schematic structural diagram of a gain component in a data monitoring device of an electric power transmission and distribution system according to a second embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a gain component in a data monitoring device of an electric power transmission and distribution system according to a second embodiment of the present invention;
fig. 8 is a schematic diagram of a board structure of a data monitoring device of an electric power transmission and distribution system according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
A first embodiment of the present invention relates to a data monitoring apparatus for an electric power transmission and distribution system. The data monitoring device of the power transmission and distribution system is used for monitoring transmission signals of the power transmission and distribution system in the power transmission or distribution process, analyzing the transmission safety of the transmission signals and avoiding the safety problem of the power transmission and distribution system in the power transmission or distribution process. There are various ways of transmitting power in the power transmission and distribution system, for example, the technologies of flexible direct current transmission and flexible power transmission can be adopted.
Fig. 1 shows a specific structure of a data monitoring apparatus 1 of the power transmission and distribution system, which includes: a gain block 10 and a data analysis block 20, the gain block 10 being communicatively coupled to the data analysis block 20.
The gain module 10 is configured to adjust the received transmission signal by a preset gain, and transmit the adjusted transmission signal to the data analysis module 20, where the transmission signal is acquired by the acquisition device in the power transmission or distribution process.
Specifically, the gain module 10 acquires a transmission signal acquired by an acquisition device through a connector, and the acquisition device can acquire the signal transmitted through an optical fiber; signals obtained by the transformers can also be collected, for example, the collecting device can generally convert voltage transmission signals in the power transmission or distribution process into small signals through voltage transformers or convert current transmission signals in the power transmission or distribution process into small signals through current transformers. The converted transmission signal can be collected by a high-precision collecting device and transmitted to the input end of the gain component 10 through the connector. The transmission signal can be analog quantity, digital quantity, power supply data and other signals in the flexible transmission process. The Type of the connector may be selected according to the actual application, such as selecting a Type-a Type connector or a Type-B Type connector, and the embodiment is not particularly limited.
In one specific implementation, the gain module 10 is shown in fig. 2 and includes: a selection module 101, a gain module 102 and a conversion module 103. The output end of the selection module 101 is connected to the input end of the gain module 102, and the output end of the gain module 102 is connected to the input end of the conversion module 103, wherein the input end of the selection module 101 is used as the input end of the gain component 10, and the output end of the conversion module 103 is used as the output end of the gain component 10.
The circuit structure of the selection module 101 is shown in fig. 3, and includes: a first switch circuit 1011 consisting of a first switch S1 connected in parallel with a first capacitor C1, and a second switch circuit 1012 consisting of a second switch S2 connected in parallel with a second capacitor C2; the input terminal of the first switch circuit 1011 is configured to receive a first signal of the transmission signal, the input terminal of the second switch circuit 1012 is configured to receive a second signal of the transmission signal, the input terminal of the first switch circuit 1011 and the input terminal of the second switch circuit 1012 are connected by a bidirectional regulator D1, and the first signal and the second signal are determined based on a preset reference signal.
Specifically, the first signal of the transmission signal may be a positive signal, the second signal of the transmission signal may be a negative signal, and the first signal and the second signal are determined based on a preset reference signal, for example, the preset reference signal may be a ground signal. It can be understood that the transmission signal collected by the collecting device may be only one signal, and if the one signal is converted into two signals according to a preset reference signal, for example, the transmission signal is a +5V signal, it can be determined that the first signal is a +5V signal, the second signal is a 0V signal, the first signal is input to the input terminal of the first switch circuit 1011, and the second signal is input to the input terminal of the second switch circuit 1012. The selection module 101 has two input terminals for receiving two transmission signals, and the two transmission signals can increase the range of voltage signals of the input transmission signals. The voltage between the input terminal of the first switch circuit 1011 and the input terminal of the second switch circuit 1012 has a voltage range smaller than 24V, for example, the voltage range allowed by the input terminal of the first switch circuit 1011 is +5V, and the voltage range allowed by the input terminal of the second switch circuit 1012 is-5V.
The operation principle of the selection module is described below with reference to the circuit structure of the selection module 101 in fig. 3. With both the first switch S1 and the second switch S2 closed, the selection module 101 is in the first state, i.e., the selection module allows the dc signal to pass through; with both the first switch S1 and the second switch S2 open, the selection module 101 is in the second state, and the selection module 101 allows the ac signal to pass through. In practical applications, the state of the selection module 101 may be determined according to the type of the transmission signal, that is, if the transmission signal is a dc signal, the selection module is in a first state that allows the dc signal to pass through, and if the transmission signal is an ac signal, the selection module is in a second state that allows the ac signal to pass through.
The gain module 102 amplifies a transmission signal input from an input terminal of the gain module and transmits the amplified transmission signal to the conversion module 103; the conversion module 103 converts the amplified transmission signal into a digital signal, and transmits the digital signal to the input end of the data analysis component 20.
Specifically, the gain module 102 may be a general operational amplifier, or may be a special operational amplifier, for example, a model AD623 general amplifier; the general purpose amplifier has two signal input terminals, a first signal of a transmission signal is input to the first input terminal of the general purpose amplifier, and a second signal of the transmission signal is input to the second input terminal of the general purpose amplifier, so that the general purpose amplifier amplifies the transmission signal according to a preset gain and inputs the amplified transmission signal. The conversion module 103 may be an analog-to-digital converter ADC, and the amplified transmission signal is converted into a digital signal after passing through the analog-to-digital converter, so as to facilitate analysis by the data analysis component.
In this embodiment, the gain module 102 is exemplified by a general-purpose amplifier AD623, and an electrical diagram of the gain module 102 is shown in fig. 4.
As shown in fig. 4, the pin 1 and the pin 8 of the general-purpose amplifier are RG pins for resistance programming, i.e., a resistor R7 is connected in series between the pin 1 and the pin 8, and the gain is determined by the impedance between the pin 1 and the pin 8. The + VS and-VS are connected with a bipolar power supply (VS is +/-2.5 v to +/-6 v) or a single power supply (+ VS is 3.0v to 12v and-VS is 0), the output voltage of the 6 pin is measured by taking the potential of the 5 pin as a reference, and the 5 pin is taken as a reference end. The impedance of the reference terminal may be set to 100 kw. The transmission signal output by the 6 pins is transmitted to the analog-to-digital converter ADC (the analog-to-digital converter ADC is not shown in fig. 4).
The data analysis component 20 analyzes the transmission safety of the adjusted transmission signal, determines the to-be-executed instruction of each device of the power transmission and distribution system according to the analysis result, and outputs the instruction.
In one specific implementation, the structure of the data analysis component 20 is shown in fig. 5, and includes: a first processing module 201 and a second processing module 202. The input end of the first processing module 201 is in communication connection with the output end of the gain component 10, the output end of the first processing module 201 is in communication connection with the input end of the second processing module 202, and the output end of the second processing module 202 is used for outputting instructions to be executed of each device in flexible transmission; the first processing module 201 is configured to analyze transmission security of the adjusted transmission signal and transmit the analyzed first processing data to the second processing module 202; the second processing module 202 is configured to verify whether the first processing data is accurate, and if the verification result is determined to be inaccurate, feed back the verification result to the first processing module 201; and if the verification result is determined to be accurate, determining the to-be-executed instruction of each device for flexible transmission according to the first processing data and outputting the instruction.
Specifically, the first processing module 201 may be a Field-Programmable Gate Array (FPGA), and the second processing module 202 may be a Digital Signal Processing (DSP). The FPGA chip may provide the required synchronization signals for the entire device circuitry, e.g., for the conversion module 103, etc. The FPGA chip has powerful functions and can perform data storage and calibration processing. The FPGA chip can analyze the transmission security of the acquired transmission signal, and the specific analysis process is not repeated here. The FPGA chip sends the first processing data to the DSP chip, the DSP chip verifies the first processing data, if the verification is determined to be inaccurate, the DSP chip feeds back the verification result to the FPGA chip, the FPGA chip can feed back the feedback result to each device for flexible transmission, each device verifies and executes the feedback result, the device usually verifies before executing the feedback result and returns the verification result to the FPGA chip, and the FPGA chip returns the verification result to the DSP chip, so that the verification of the feedback information by the FPGA chip is realized. And if the DSP determines that the verification result is accurate, determining the running state of each device according to the first processing data. The first process data may include information on whether or not the current operation state of each device is safe.
Compared with the prior art, the embodiment of the invention has the advantages that the transmission signal in the power transmission and distribution system process is collected at present, the transmission signal in the power transmission or distribution process is generally required to be converted into the small signal which can be collected, the gain of the small signal is usually very small, the transmission signal with small gain is not beneficial to the analysis of the data analysis component, so that the analysis on the transmission signal of the power transmission and distribution system is not accurate, the gain component in the embodiment can adjust the gain of the transmission signal, the adjusted transmission signal meets the analysis requirement of the data analysis component, the range of the analysis on the transmission signal is greatly increased, the data monitoring range of the power transmission and distribution system is increased, and the efficiency and the precision of the data monitoring in the power transmission or distribution process are improved.
A second embodiment of the present invention relates to a data monitoring apparatus for an electric power transmission and distribution system. The second embodiment is a further improvement of the first embodiment, and the main improvements are as follows: in the second embodiment of the present invention, the gain block 10 further includes: a filtering module 104, where the filtering module 104 is configured to filter out noise in a preset frequency range in the first signal and the second signal, respectively. The specific structure of the gain block 10 is shown in fig. 6.
As shown in fig. 6, a first input terminal of the filtering module 104 is connected to an output terminal of the first switch circuit, a second input terminal of the filtering module 104 is connected to an output terminal of the second switch circuit, a first output terminal of the filtering module 104 is connected to a first input terminal of the gain module 102, and a second output terminal of the filtering module 104 is connected to a second input terminal of the gain module 102.
In a specific implementation, a specific circuit of the gain module 10 is shown in fig. 7, wherein a specific structure of the filtering module 104 is shown as reference numeral 104 in fig. 6, and the converting module 103 is not shown in fig. 7.
The circuit structure of the filtering module 104 is as follows: a first sub-circuit 1041 formed by connecting a first resistor R1 and a third capacitor C3 in parallel, wherein a first end of the first sub-circuit 1041 is connected in series with a second resistor R2, and a second end of the first sub-circuit 1041 is connected to ground, wherein a node having the same voltage as the first end of the first sub-circuit 1041 is connected to a first input end (i.e., a 2-pin end) of the gain module 102; a second sub-circuit 1042 formed by a third resistor R3 and a fourth capacitor C4 connected in parallel, wherein a first terminal of the second sub-circuit 1042 is connected in series to a fourth resistor R4, and a second terminal of the second sub-circuit 1042 is grounded, wherein a node having the same voltage as the first terminal of the second sub-circuit 1042 is connected to a second input terminal (i.e., a 3-pin terminal) of the gain module 102; a fifth capacitance C5 is electrically connected between the first terminal of the first sub-circuit 1041 and ground, and a sixth capacitance C6 is electrically connected between the first terminal of the second sub-circuit and ground.
In the data monitoring device of the power transmission and distribution system provided by the embodiment, the monitoring device can quickly filter out the clutter through the first sub-circuit and the second sub-circuit of the filtering module, and the circuit structures of the first sub-circuit and the second sub-circuit are simple and easy to realize.
A third embodiment of the present invention relates to a data monitoring apparatus for an electric power transmission and distribution system. The third embodiment is a further improvement of the second embodiment, and the main improvements are as follows: in a third embodiment of the present invention, the data monitoring apparatus of the electric power transmission and distribution system further includes: the multiple optical paths enter the light-out module 30 and/or the peripheral interface 40.
The data monitoring device of the power transmission and distribution system may include the multiple paths of light entering and exiting modules 30, may also include only the peripheral interface 40, and may also include the multiple paths of light entering and exiting modules 30 and the peripheral interface 40 at the same time. In this embodiment, for example, the optical fiber module includes multiple optical light-in/light-out modules and an external interface, and fig. 8 is a schematic diagram of a board card of a data monitoring device of the power transmission and distribution system.
Specifically, the multiple paths of light enter the light exit module 30 and are in communication connection with the first processing module 201, and the multiple paths of light enter the light exit module 30 is used for collecting light signals or outputting light signals. The peripheral interface 40 is connected to the first processing module 201, and is configured to send data of the first processing module 201 or receive data from the outside. The peripheral interface may be EtherCAT.
The data monitoring device of the power transmission and distribution system further comprises a multi-path light input and output module 30 and/or an external interface 40, so that the data monitoring device of the power transmission and distribution system can acquire transmission signals in various ways, and the application range of the data monitoring device of the power transmission and distribution system is widened.
In addition, the data monitoring device of the power transmission and distribution system may further include: the first communication interface 50, the first communication interface 50 is connected with the first processing module 201 in a communication way; and/or the second communication interface 60, the second communication interface 60 is in communication connection with the second processing module 202; the first communication interface 50 is used for providing a communication interface for the general purpose input/output port and/or the differential input/output port, and the second communication interface 60 is used for providing a communication interface for the controller area network bus and/or the multichannel buffer serial port. By providing various communication interfaces, the application range of the data monitoring device of the power transmission and distribution system is improved. The power supply in fig. 8 supplies power to the whole board card, and in order to increase the function of the data monitoring device of the power transmission and distribution system, a Flash memory, such as the Flash memory and the configuration chip in fig. 8, may be added.
It should be noted that, in practical applications, boards of the data monitoring device of the power transmission and distribution system with various sizes may be manufactured, for example, the board size may be: 160mm by 100mm, or 220mm by 144 mm.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A data monitoring apparatus for an electric power transmission and distribution system, comprising: the gain component is in communication connection with the data analysis component;
the gain component is used for adjusting the received transmission signals by preset gain and transmitting the adjusted transmission signals to the data analysis component, and the transmission signals are acquired by an acquisition device in the power transmission or distribution process;
and the data analysis component analyzes the transmission safety of the adjusted transmission signal, and determines and outputs instructions to be executed of each device of the power transmission and distribution system according to an analysis result.
2. The data monitoring device of the power transmission and distribution system of claim 1, wherein the gain component comprises: the device comprises a selection module, a gain module and a conversion module;
the output end of the selection module is connected with the input end of the gain module, and the output end of the gain module is connected with the input end of the conversion module, wherein the input end of the selection module is used as the input end of the gain component, and the output end of the conversion module is used as the output end of the gain component;
if the transmission signal is a direct current signal, the selection module is in a first state allowing the direct current signal to pass through, and if the transmission signal is an alternating current signal, the selection module is in a second state allowing the alternating current signal to pass through;
the gain module amplifies a transmission signal input from the input end of the gain module and transmits the amplified transmission signal to the conversion module;
and the conversion module converts the amplified transmission signal into a digital signal and transmits the digital signal to the input end of the data analysis component.
3. The data monitoring device of the electric power transmission and distribution system of claim 2, wherein the selection module comprises:
the first switch circuit is formed by connecting a first switch in parallel with a first capacitor, and the second switch circuit is formed by connecting a second switch in parallel with a second capacitor;
the input end of the first switch circuit is used for receiving a first signal of the transmission signal, the input end of the second switch circuit is used for receiving a second signal of the transmission signal, the input end of the first switch circuit and the input end of the second switch circuit are connected through a bidirectional voltage stabilizer, and the first signal and the second signal are determined based on a preset reference signal.
4. The data monitoring device of the power transmission and distribution system of claim 3, wherein the gain module further comprises: a filtering module;
a first input end of the filtering module is connected with an output end of the first switch circuit, a second input end of the filtering module is connected with an output end of the second switch circuit, a first output end of the filtering module is connected with a first input end of the gain module, and a second output end of the filtering module is connected with a second input end of the gain module;
the filtering module is used for respectively filtering out clutter in a preset frequency range in the first signal and the second signal.
5. The data monitoring device of the electric power transmission and distribution system according to claim 4, wherein the structure of the filtering module specifically comprises:
the first sub-circuit is formed by connecting a first resistor and a third capacitor in parallel, a first end of the first sub-circuit is connected with a second resistor in series, a second end of the first sub-circuit is grounded, and a node with the same voltage as that of the first end of the first sub-circuit is connected with a first input end of the gain module;
the first end of the second sub-circuit is connected with the fourth resistor in series, the second end of the second sub-circuit is grounded, and a node with the same voltage as the first end of the second sub-circuit is connected with the second input end of the gain module;
a fifth capacitor is electrically connected between the first terminal of the first sub-circuit and ground and a sixth capacitor is electrically connected between the first terminal of the second sub-circuit and ground.
6. A data monitoring apparatus of an electric power transmission and distribution system according to claim 3, wherein the data analysis component comprises: a first processing module and a second processing module;
the input end of the first processing module is in communication connection with the output end of the gain component, the output end of the first processing module is in communication connection with the input end of the second processing module, and the output end of the second processing module is used for outputting instructions to be executed of each flexible transmission device;
the first processing module is used for analyzing the transmission safety of the adjusted transmission signal and transmitting the analyzed first processing data to the second processing module;
the second processing module is used for verifying whether the first processing data is accurate or not, and if the verification result is determined to be inaccurate, the verification result is fed back to the first processing module; and if the verification result is determined to be accurate, determining the instruction to be executed of each flexible transmission device according to the first processing data and outputting the instruction.
7. The data monitoring device of the electric power transmission and distribution system according to claim 6, wherein the first processing module is a field programmable gate array chip and the second processing module is a digital signal processing chip.
8. The data monitoring device of the power transmission and distribution system according to any one of claims 1 to 7, wherein the gain component obtains the transmission signal collected by the collecting device through a connector.
9. The data monitoring device of the electric power transmission and distribution system according to claim 6 or 7, further comprising:
the multi-path light input and output module is in communication connection with the first processing module and is used for collecting light signals or outputting light signals;
and/or the presence of a gas in the gas,
and the peripheral interface is connected with the first processing module and is used for sending the data of the first processing module or receiving the data from the outside.
10. The data monitoring device of the electric power transmission and distribution system according to claim 6 or 7, further comprising: the first communication interface is in communication connection with the first processing module;
and/or the presence of a gas in the gas,
the second communication interface is in communication connection with the second processing module;
the first communication interface is used for providing a communication interface for a universal input/output port and/or a differential input/output port, and the second communication interface is used for providing a communication interface for a controller area network bus and/or a multichannel buffering serial port.
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