CN110690757B - 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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- CN110690757B CN110690757B CN201910848594.4A CN201910848594A CN110690757B CN 110690757 B CN110690757 B CN 110690757B CN 201910848594 A CN201910848594 A CN 201910848594A CN 110690757 B CN110690757 B CN 110690757B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
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 in the invention comprises: the gain component is in communication connection with the data analysis component; the gain component is used for adjusting the received transmission signal with preset gain, transmitting the adjusted transmission signal to the data analysis component, and acquiring the transmission signal by the acquisition device in the transmission and distribution or power distribution process; and the data analysis component analyzes the transmission safety of the adjusted transmission signal, determines the instruction to be executed of each device of the power transmission and distribution system according to the analysis result and outputs the instruction. The embodiment can provide a wide-range data acquisition mode and improve the application range of data monitoring.
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 and a load center which are far away from each other are connected through the power transmission, so that the development and the utilization of the electric energy exceed the limitation of a region; the power transformation refers to a process of converting voltage from low level to high level (namely boosting) or from high level to low level by using certain equipment; distribution is a distribution means for distributing power to users in the area where power is consumed, and directly serves the users.
The electric power transmission and distribution system can realize three functions of transmission, transformation and distribution. The voltage signals and the current signals of the power transmission and distribution system in the power transmission and distribution process are generally collected, and the collected signals are analyzed and processed to monitor the power transmission and distribution system, so that the normal operation of each device of the power transmission and distribution system in the power transmission or distribution process is ensured.
The inventor finds that at least the following problems exist in the prior art: because the power transmission and distribution system mainly uses high voltage and ultra-high voltage in the transmission and distribution process, in order to collect current and voltage data in the transmission and distribution process, high-voltage signals need to be converted into small signals, so that the acquired data has a narrow measuring range and cannot meet actual requirements.
Disclosure of Invention
The embodiment of the invention aims to provide a data monitoring device of an electric 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 problems, an embodiment of the present invention provides a data monitoring device 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 signal with preset gain, transmitting the adjusted transmission signal to the data analysis component, and acquiring the transmission signal by the acquisition device in the transmission or distribution process; and the data analysis component analyzes the transmission safety of the adjusted transmission signal, determines the instruction to be executed 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 collects the transmission signals in the power transmission and distribution system process, the transmission signals in the power transmission and distribution system process are usually required to be converted into the small signals which can be collected, the gain of the small signals is very small, the transmission signals of the power transmission and distribution system are not analyzed by the data analysis component due to the fact that the transmission signals with the small gain are not beneficial to the analysis of the data analysis component, the gain component in the embodiment can adjust the gain of the transmission signals, the adjusted transmission signals meet the analysis requirement of the data analysis component, the range of the transmission signal analysis is greatly increased, the range of the data monitoring of the power transmission and distribution system is increased, and the efficiency and the accuracy of the data monitoring in the power transmission and distribution process are improved.
In addition, the gain component 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, 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. The selection module can select direct current signals to pass or alternating current signals to pass according to the requirements, so that 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 wider.
In addition, the selection module includes: a first switch circuit composed of a first switch connected in parallel with a first capacitor, and a second switch circuit composed of a second switch connected 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 is connected with the input end of the second switch circuit 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 two paths of switch circuits, which is beneficial to improving the range of the received transmission signals; in addition, the structures of the first switch circuit and the second switch circuit are all of the structure types of capacitance parallel switches, so that the distinction between direct current and alternating current is realized, the circuit structure is simple, and the cost is reduced.
In addition, the gain component 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 filtering clutter in a preset frequency range in the first signal and the second signal respectively. Clutter in the transmission signal can be filtered through the filtering module, so that the accuracy of subsequent analysis of the transmission signal is improved.
In addition, the structure of the filtering module specifically includes: the first end of the first sub-circuit is connected with the second resistor in series, and the second end of the first sub-circuit is grounded, wherein 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 second sub-circuit is formed by connecting a third resistor and a fourth capacitor in parallel, 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 end of the first sub-circuit and ground, and a sixth capacitor is electrically connected between the first end 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 structures of the first sub-circuit and the second sub-circuit are simple and easy to realize.
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 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 device in flexible transmission; the first processing module is used for carrying out transmission safety analysis on the adjusted transmission signals 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 are accurate or not, and if the verification result is determined to be inaccurate, the verification result is fed back to the first processing module; if the verification result is determined to be accurate, determining an instruction to be executed 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 the analysis of the transmission safety can be mutually verified between the first processing module and the second processing module, so that the accuracy of the data analysis component in analyzing the transmission signal 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 field programmable gate array chip has high data processing speed, and the digital signal processing chip processes data quickly, so that the speed of analyzing transmission 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 comprises: 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 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. The data monitoring device of the power transmission and distribution system further comprises a plurality of light input and output modules and/or peripheral interfaces, 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 improved.
In addition, the data monitoring device of the power transmission and distribution system further comprises: 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 general 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 buffer 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 improved.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
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 selection 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 module 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 board structure diagram of a data monitoring device of an electric power transmission and distribution system according to a third embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present invention, and the embodiments can be mutually combined and referred to without contradiction.
A first embodiment of the present invention relates to a data monitoring device 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 power transmission in the power transmission and distribution system, for example, flexible direct current transmission and flexible transmission techniques may be used.
The specific structure of the data monitoring device 1 of the power transmission and distribution system is shown in fig. 1, and the data monitoring device comprises: gain component 10 and data analysis component 20, gain component 10 is communicatively coupled to data analysis component 20.
The gain component 10 is configured to adjust the received transmission signal with a preset gain, and transmit the adjusted transmission signal to the data analysis component 20, where the transmission signal is acquired by the acquisition device during the power transmission or distribution process.
Specifically, the gain component 10 acquires a transmission signal acquired by an acquisition device through a connector, and the acquisition device can acquire a signal transmitted through an optical fiber; the signals obtained by the transformer can also be collected, for example, the collection device can generally convert a voltage transmission signal in the process of power transmission or distribution into a small signal through a voltage transformer or convert a current transmission signal in the process of power transmission or distribution into a small signal through a current transformer. 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 a 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 implementation, for example, a Type-a Type connector or a Type-B Type connector is selected, and the embodiment is not limited specifically.
In one specific implementation, the gain assembly 10, as shown in FIG. 2, includes: a selection module 101, a gain module 102 and a conversion module 103. The output end of the selection module 101 is connected with the input end of the gain module 102, the output end of the gain module 102 is connected with 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 switching circuit 1011 composed of a first switch S1 connected in parallel with a first capacitor C1, and a second switching circuit 1012 composed of a second switch S2 connected in parallel with a second capacitor C2; the input terminal of the first switching circuit 1011 is used for receiving a first signal of the transmission signal, the input terminal of the second switching circuit 1012 is used for receiving a second signal of the transmission signal, the input terminal of the first switching circuit 1011 is connected with the input terminal of the second switching circuit 1012 through the bidirectional voltage regulator D1, and the first signal and the second signal are determined based on a preset reference signal.
In particular, 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 will be appreciated that the transmission signal collected by the collecting device may be only one signal, if the one signal is converted into two signals according to a preset reference signal, for example, the transmission signal is a +5v signal, then it may 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 end of the first switch circuit 1011, and the second signal is input to the input end of the second switch circuit 1012. The selection module 101 is provided with two input terminals for receiving two transmission signals, and can increase the range of the voltage signal of the input transmission signals due to the two signals. The voltage allowed by the voltage between the input of the first switching circuit 1011 and the input of the second switching circuit 1012 ranges to a voltage less than 24V, for example, the voltage allowed by the input of the first switching circuit 1011 is +5v and the voltage allowed by the input of the second switching circuit 1012 is-5V.
The operation of the selection module will be described with reference to fig. 3, which is a circuit configuration diagram of the selection module 101. With both the first switch S1 and the second switch S2 closed, the selection module 101 is in a first state, i.e. the selection module allows the passage of a direct current signal; 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. 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 allowing the dc signal to pass through, and if the transmission signal is an ac signal, the selection module is in a second state allowing the ac signal to pass through.
The gain module 102 amplifies the transmission signal input from the gain module input terminal 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 terminal 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 general amplifier AD623 model; the universal amplifier has two signal input ends, a first signal of the transmission signal is input into the first input end of the universal amplifier, and a second signal of the transmission signal is input into the second input end of the universal amplifier, so that the universal amplifier amplifies the transmission signal according to a preset gain, and the amplified transmission signal is input. The conversion module 103 may be an analog-to-digital converter ADC, and the amplified transmission signal is converted into a digital signal by 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 amplifier AD623, and an electrogram of the gain module 102 is shown in fig. 4.
As shown in fig. 4, the 1 pin and the 8 pin of the universal amplifier are RG pins for resistance programming, i.e. a resistor R7 is connected in series between the 1 pin and the 8 pin, and the gain is determined by the impedance between the 1 pin and the 8 pin. The +VS and-VS are connected with bipolar power supplies (vs= ±2.5v to±6v) or single power supplies (+vs=3.0v to 12v, -vs=0), the output voltage of the 6 pins is measured by taking the potential of the 5 pins as a reference, and the 5 pins are taken as reference ends. The impedance of the reference terminal may be set to 100kw. The transmission signal output by the 6 pins is transmitted to an 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, and determines the instruction to be executed of each device of the power transmission and distribution system according to the analysis result and outputs the instruction.
In one specific implementation, the data analysis component 20 is structured as 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 perform analysis of transmission security on 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 it is determined that the verification result is inaccurate, feed back the verification result to the first processing module 201; if the verification result is determined to be accurate, determining an instruction to be executed 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) chip, and the second processing module 202 may be a digital signal processing (Digital Signal Process DSP) chip. The FPGA chip may provide the required synchronization signals for the overall device circuitry, e.g., for the conversion module 103, etc. The FPGA chip has powerful functions and can perform data storage and scaling processing. The FPGA chip can perform analysis of transmission security on the acquired transmission signal, and a specific analysis process is not described 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 inaccurate, the DSP chip feeds back a verification result to the FPGA chip, the FPGA chip can feed back the feedback result to each device of flexible transmission, and the feedback result is verified and executed by each device. If the DSP determines that the verification result is accurate, the running state of each device is determined according to the first processing data. The first process data may include information as to whether the current operating state of each device is safe.
Compared with the prior art, the embodiment of the invention collects the transmission signals in the power transmission and distribution system process, the transmission signals in the power transmission and distribution system process are usually required to be converted into the small signals which can be collected, the gain of the small signals is very small, the transmission signals of the power transmission and distribution system are not analyzed by the data analysis component due to the fact that the transmission signals with the small gain are not beneficial to the analysis of the data analysis component, the gain component in the embodiment can adjust the gain of the transmission signals, the adjusted transmission signals meet the analysis requirement of the data analysis component, the range of the transmission signal analysis is greatly increased, the range of the data monitoring of the power transmission and distribution system is increased, and the efficiency and the accuracy of the data monitoring in the power transmission and distribution process are improved.
A second embodiment of the present invention relates to a data monitoring device for an electric power transmission and distribution system. The second embodiment is a further improvement to the first embodiment, and the main improvement is that: in a second embodiment of the present invention, the gain assembly 10 further comprises: the filtering module 104 is configured to filter clutter in a preset frequency range in the first signal and the second signal respectively by the filtering module 104. The specific structure of the gain element 10 is shown in fig. 6.
As shown in fig. 6, a first input end of the filtering module 104 is connected to an output end of the first switching circuit, a second input end of the filtering module 104 is connected to an output end of the second switching circuit, a first output end of the filtering module 104 is connected to a first input end of the gain module 102, and a second output end of the filtering module 104 is connected to a second input end of the gain module 102.
In a specific implementation, the specific circuit of the gain module 10 is shown in fig. 7, where the specific structure of the filtering module 104 is shown as reference numeral 104 in fig. 6, and the conversion module 103 is not shown in fig. 7.
The circuit structure of the filtering module 104 is as follows: the first sub-circuit 1041 is formed by connecting the first resistor R1 and the third capacitor C3 in parallel, the first end of the first sub-circuit 1041 is connected in series with the second resistor R2, the second end of the first sub-circuit 1041 is grounded, and a node having the same voltage as the first end of the first sub-circuit 1041 is connected with the first input end (i.e. 2 pin end) of the gain module 102; the second sub-circuit 1042 composed of the third resistor R3 and the fourth capacitor C4 connected in parallel, the first end of the second sub-circuit 1042 is connected in series with the fourth resistor R4, the second end of the second sub-circuit 1042 is grounded, wherein the node having the same voltage with the first end of the second sub-circuit 1042 is connected with the second input end (i.e. 3 pin end) of the gain module 102; a fifth capacitor C5 is electrically connected between the first terminal of the first sub-circuit 1041 and ground, and a sixth capacitor C6 is electrically connected between the first terminal of the second sub-circuit and ground.
According to the data monitoring device of the power transmission and distribution system, clutter can be filtered out quickly 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.
The third embodiment of the invention relates to a data monitoring device of an electric power transmission and distribution system. This third embodiment is a further improvement over the second embodiment, and the main improvement is that: in a third embodiment of the present invention, the data monitoring device of the power transmission and distribution system further includes: a multiple light entry and exit module 30, and/or a peripheral interface 40.
The data monitoring device of the power transmission and distribution system can comprise a plurality of light input and output modules 30, can also only comprise a peripheral interface 40, and can also comprise the light input and output modules 30 and the peripheral interface 40. In this embodiment, a board card schematic diagram of a data monitoring device of the power transmission and distribution system is shown in fig. 8 by taking a case that the data monitoring device includes a plurality of optical input/output modules and peripheral interfaces.
Specifically, the multiple light-in/light-out module 30 is communicatively connected to the first processing module 201, and the multiple light-in/light-out 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 used for transmitting data of the first processing module 201 or receiving data from the outside. The peripheral interface may be an 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 a peripheral interface 40, 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 improved.
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 communicatively connected with the first processing module 201; and/or, the second communication interface 60 being communicatively connected to the second processing module 202; wherein the first communication interface 50 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 60 is used for providing a communication interface for a controller area network bus and/or a 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. In order to increase the function of the data monitoring device of the power transmission and distribution system, the power supply in fig. 8 supplies power to the whole board card, and Flash memory, such as Flash memory and configuration chip in fig. 8, may be further added.
It should be noted that, in practical application, the board of the data monitoring device of the power transmission and distribution system with various sizes can be manufactured, for example, the board size can be: 160mm x 100mm, or 220mm x 144mm.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of 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.
Claims (9)
1. A data monitoring device for an electric power transmission and distribution system, comprising: a gain component and a data analysis component, the gain component being communicatively coupled to the data analysis component;
the gain component is used for adjusting the received transmission signal with preset gain and transmitting the adjusted transmission signal to the data analysis component, and the transmission signal is acquired by the acquisition device in the transmission or distribution process;
the data analysis component analyzes the transmission safety of the adjusted transmission signal, and determines the instruction to be executed of each device of the power transmission and distribution system according to the analysis result and outputs the instruction;
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, 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;
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.
2. The data monitoring device of a power transmission and distribution system according to claim 1, wherein the selection module includes:
a first switch circuit composed of a first switch connected in parallel with a first capacitor, and a second switch circuit composed of a second switch connected 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 is connected with the input end of the second switch circuit through a bidirectional voltage stabilizer, and the first signal and the second signal are determined based on a preset reference signal.
3. The data monitoring device of a power transmission and distribution system of claim 2, wherein the gain component 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 filtering clutter in a preset frequency range in the first signal and the second signal respectively.
4. A data monitoring device for an electric power transmission and distribution system according to claim 3, wherein the structure of the filtering module specifically comprises:
the first end of the first sub-circuit is connected in series with the second resistor, and the second end of the first sub-circuit is grounded, wherein 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, and the second end of the second sub-circuit is grounded, wherein 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 end of the first sub-circuit and ground, and a sixth capacitor is electrically connected between the first end of the second sub-circuit and ground.
5. The data monitoring device of a power transmission and distribution system according to claim 2, 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 all equipment of the electric power transmission and distribution system;
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 are 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 device of the power transmission and distribution system according to the first processing data and outputting the instruction.
6. The data monitoring device of claim 5, wherein the first processing module is a field programmable gate array chip and the second processing module is a digital signal processing chip.
7. The data monitoring device of any one of claims 1 to 6, wherein the gain component obtains the transmission signal collected by the collection device through a connector.
8. The data monitoring device of a power transmission and distribution system according to claim 5 or 6, characterized in that the data monitoring device of a power transmission and distribution system further comprises:
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 number of the groups of groups,
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.
9. The data monitoring device of a power transmission and distribution system according to claim 5 or 6, characterized in that the data monitoring device of a power transmission and distribution system further comprises: the first communication interface is in communication connection with the first processing module;
and/or the number of the groups of groups,
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 area network bus and/or the multichannel buffer serial port.
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