CN111490800B - Power distribution cabinet management system based on internet - Google Patents
Power distribution cabinet management system based on internet Download PDFInfo
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- CN111490800B CN111490800B CN202010362795.6A CN202010362795A CN111490800B CN 111490800 B CN111490800 B CN 111490800B CN 202010362795 A CN202010362795 A CN 202010362795A CN 111490800 B CN111490800 B CN 111490800B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a power distribution cabinet management system based on the internet, which comprises a signal sampling module and a feedback noise reduction module, the signal sampling module samples carrier signals of a signal emitter node in a power distribution cabinet management system based on the internet, the signal sampling module is connected with the feedback noise reduction module, a triode Q1 is used for detecting the output signals of the resonant circuit and the potential difference of the signal of an emitter of a triode Q3, in order to further ensure the accuracy of the signal amplitude, a triode Q2 is used for feeding back the potential difference between the output end and the non-inverting input end of the operational amplifier AR2, when the difference is too large, the output signal of the operational amplifier AR2 is not in the error range, the feedback signal is fed back to the inverting input end of the operational amplifier AR1, and the noise reduction and frequency stabilization are carried out until the output signal of the operational amplifier AR2 is in the error range, so that the power distribution cabinet management system terminal based on the internet can respond to the distortion of the carrier signal quickly in time.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a power distribution cabinet management system based on the internet.
Background
At present, the rapid development of the internet promotes the gradual increase of domestic data centers, the automation degree of the devices is high, the efficiency is high, the continuous operation time is long, the power supply requirement is very high correspondingly, the capacity of a low-voltage distribution transformer is continuously increased, the performance of a low-voltage distribution cabinet is required to be higher and higher, and the low-voltage distribution cabinet is a foundation for adapting to the rapid development of the current information technology;
the utility model discloses a power distribution cabinet management system based on internet can improve the managerial efficiency of switch board, and the information transmission of switch board is the carrier transmission very much, because for remote transmission, often meets the interference of equal or high frequency signal in the atmospheric environment, for example power plant, during the signal transmission tower, often carrier signal takes place the distortion, leads to the switch board management system based on internet to receive the signal inaccurate, has reduced the result of use of the switch board management system based on internet.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, an object of the present invention is to provide an internet-based power distribution cabinet management system, which can sample and calibrate a signal emitter node carrier signal in the internet-based power distribution cabinet management system, and convert the signal emitter node carrier signal into an internet-based trigger signal of a power distribution cabinet management system terminal.
The technical scheme for solving the problem is that the power distribution cabinet management system based on the internet comprises a signal sampling module and a feedback noise reduction module, wherein the signal sampling module is used for sampling a signal emitter node carrier signal in the power distribution cabinet management system based on the internet, the signal sampling module is connected with the feedback noise reduction module, and an output signal of the feedback noise reduction module is sent to a power distribution cabinet management system terminal based on the internet through a signal emitter E1;
the feedback noise reduction module comprises a variable resistor RW1, one end of the variable resistor RW1 is connected with one end of a capacitor C1 and an output port of the signal sampling module, one end of the variable resistor RW1 is connected with one end of a resistor R1, the other end of the variable resistor RW1 is connected with the collector of a triode Q1, the other end of the resistor R1 is connected with one end of an inductor L1, a resistor R1 and one end of a resistor R1, the other end of the resistor R1 and the other end of the inductor L1 are connected with the other end of the capacitor C1 and the other end of the resistor R1, the other end of the resistor R1 is connected with the non-inverting input end of an amplifier AR 6, the inverting input end of the amplifier AR1 is connected with one end of the resistor R1 and one end of the capacitor C1, the other end of the capacitor C1 is connected with the base of the triode Q1, the output end of the amplifier AR1 is connected with the collector of the triode Q1, the resistor R1, the other end of the resistor R1 and one end of the capacitor C387, One end of a capacitor C4, the other end of the capacitor C4 is grounded, the other end of the resistor R8 is connected with the base of a triode Q1, the emitter of a triode Q1 is connected with the cathode of a diode D3 and the anode of a diode D4, the anode of a diode D4 is connected with the cathode of a diode D4 and the emitter of a triode Q4, the base of a triode D4 is connected with the other end of a resistor R4, the collector of the triode Q4 is connected with one end of a resistor R4 and the inverting input end of an operational amplifier AR 4, the other end of the operational amplifier AR 4 is grounded, the non-inverting input end of the operational amplifier AR 4 is connected with the other end of an inductor L4, the other end of the capacitor C4 and the base of a transistor Q4, the emitter of the transistor Q4 is connected with the other end of the resistor R4, the collector of the transistor Q4 is connected with one end of the resistor R6, the other end of the resistor R4 is connected with the cathode of a diode D4, the anode of an output diode D387, One end of the resistor R12 and the other end of the resistor R11 are grounded, the other end of the resistor R12 is connected with the output end of the amplifier AR3 and one end of the resistor R13, and the other end of the resistor R13 is connected with the signal transmitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. when the signal frequency is abnormal, series resonance is caused at the moment, the voltage height at two ends of a load resistor R3 is high, the inductor L1 just compensates the upper limit of the signal frequency to supplement the signal frequency, in order to ensure accurate sampling signals, noise interference is not contained in the signals, because the signal transmission has noise accumulation, once a signal source has noise, the sampled signals received by a power distribution cabinet management system terminal based on the internet are distorted, therefore, the capacitor C3 is used as a coupling capacitor to reduce the signal noise at the output end of an operational amplifier AR1, meanwhile, a distortion signal is filtered by using a triode Q3, the capacitor C4 plays a role of a bypass capacitor, the inductor L2 is used to filter abnormal high-frequency components, the capacitor C5 and the capacitor C6 are used to filter abnormal low-frequency components, frequency abnormality is avoided in the noise reduction process, and abnormal frequency signals are further filtered, has great popularization value;
2. the method comprises the steps of detecting a potential difference between an output signal of a resonant loop and an emitter signal of a triode Q3 by using a triode Q1, feeding back a signal to an emitter of a triode Q4, further detecting an emitter signal of a triode Q3 by using a triode Q4, feeding back a signal to an inverting input end of an operational amplifier AR2 to adjust the amplitude effect of the output signal of the operational amplifier AR2 by using the triode Q1 and the triode Q4 which are respectively of NPN type and PNP type to ensure the amplitude of a calibration signal, feeding back a potential difference between an output end and a non-inverting input end of the operational amplifier AR2 by using the triode Q2 to further ensure the accuracy of the amplitude of the signal, feeding back a signal to the inverting input end of the operational amplifier AR1 when the difference is too large, feeding back the signal to the inverting input end of the operational amplifier AR1 from the new noise reduction and frequency stabilization until the output signal of the operational amplifier AR2 is in the error range, finally amplifying the non-phase signal, the power distribution cabinet management system terminal based on the internet can timely make quick response to carrier signal distortion.
Drawings
Fig. 1 is a feedback noise reduction module diagram of a power distribution cabinet management system based on the internet.
Fig. 2 is a signal sampling module diagram of a power distribution cabinet management system based on the internet.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In the first embodiment, the internet-based power distribution cabinet management system comprises a signal sampling module and a feedback noise reduction module, wherein the signal sampling module samples a carrier signal of a signal emitter node in the internet-based power distribution cabinet management system, the signal sampling module is connected with the feedback noise reduction module, and an output signal of the feedback noise reduction module is sent to an internet-based power distribution cabinet management system terminal through a signal emitter E1;
the feedback noise reduction module uses a capacitor C2, an inductor L1 and a resistor R3 to form a resonant loop, compensates signal frequency, realizes widening the passband of signals and achieves the effect of improving the signal transmission stability, when the signal frequency is abnormal, series resonance can be caused at the moment, the voltage height at two ends of a load resistor R3 is enabled, the inductor L1 just compensates the upper limit of the signal frequency at the moment, the effect of supplementing the signal frequency is achieved, in order to enable the sampling signals to be accurate, noise interference does not need to be contained in the signals, once noise exists in a signal source, the sampling signals received by an Internet-based power distribution cabinet management system terminal are distorted, therefore, the capacitor C3 is used as a coupling capacitor, the signal noise at the output end of an operational amplifier AR1 is reduced, meanwhile, a triode Q3 is used for filtering distortion signals, and the capacitor C4 plays a role of a bypass capacitor, meanwhile, an inductor L2 is used for filtering abnormal high-frequency components, a capacitor C5 and a capacitor C6 are used for filtering abnormal low-frequency components, frequency abnormality is avoided in the noise reduction process, abnormal frequency signals are further filtered, and on the premise of stable frequency, the stability of signal waveforms needs to be ensured, therefore, a triode Q1 is used for detecting the output signal of a resonance circuit and the signal potential difference of an emitter of a triode Q3 and feeding back signals to an emitter of a triode Q4, wherein a limiting circuit consisting of a diode D3 and a diode D4 is used for limiting the signal potential and playing the role of a protection circuit, a triode Q4 is used for further detecting the emitter signal of a triode Q3, a triode Q1 and a triode Q4 are respectively of NPN and PNP types so as to ensure the amplitude of calibration signals, the feedback signals are sent to the inverting input end of an operational amplifier AR2 so as to adjust the effect of the amplitude of the, the potential difference between the output end and the non-inverting input end of the operational amplifier AR2 is fed back by using a triode Q2, when the difference is too large, the output signal of the operational amplifier AR2 is not in an error range, a signal is fed back to the inverting input end of the operational amplifier AR1, noise reduction and frequency stabilization are carried out until the output signal of the operational amplifier AR2 is in the error range, and finally the non-inverting amplified signal of the operational amplifier AR3 is sent to the terminal of the power distribution cabinet management system based on the internet through a signal transmitter E1;
the feedback noise reduction module has a specific structure that one end of a variable resistor RW1 is connected with one end of a capacitor C2 and an output port of a signal sampling module, one end of the variable resistor RW1 is connected with one end of a resistor R4, the other end of the variable resistor RW 4 is connected with a collector of a triode Q4, the other end of the resistor R4 is connected with one end of an inductor L4, one end of a resistor R4 and one end of a resistor R4, the other end of the resistor R4 and the other end of the resistor R4 are connected with one end of a capacitor R4 and one end of a capacitor C4, the other end of the capacitor C4 is connected with a base of the triode Q4, the collector of the output of the amplifier AR 4 and the resistor R4, the other end of the capacitor C4 and one end of an emitter of the capacitor C4, and the output end of the resistor R4 and the resistor R4 are connected with the emitter of the triode Q4, the resistor R4 and the other end of the resistor R4, One end of a capacitor C4, the other end of the capacitor C4 is grounded, the other end of the resistor R8 is connected with the base of a triode Q1, the emitter of a triode Q1 is connected with the cathode of a diode D3 and the anode of a diode D4, the anode of a diode D4 is connected with the cathode of a diode D4 and the emitter of a triode Q4, the base of a triode D4 is connected with the other end of a resistor R4, the collector of the triode Q4 is connected with one end of a resistor R4 and the inverting input end of an operational amplifier AR 4, the other end of the operational amplifier AR 4 is grounded, the non-inverting input end of the operational amplifier AR 4 is connected with the other end of an inductor L4, the other end of the capacitor C4 and the base of a transistor Q4, the emitter of the transistor Q4 is connected with the other end of the resistor R4, the collector of the transistor Q4 is connected with one end of the resistor R6, the other end of the resistor R4 is connected with the cathode of a diode D4, the anode of an output diode D387, One end of the resistor R12 and the other end of the resistor R11 are grounded, the other end of the resistor R12 is connected with the output end of the amplifier AR3 and one end of the resistor R13, and the other end of the resistor R13 is connected with the signal transmitter E1.
In the second embodiment, on the basis of the first embodiment, the signal sampling module selects a signal sampler J1 with a model of DAM-3056AH to sample a carrier signal of a node of a signal transmitter in an internet-based power distribution cabinet management system, a voltage regulator tube D1 stabilizes voltage, a capacitor C1 and a resistor R2 form an RC filter circuit to filter the signal, the signal sampler J1 is connected with +5V of a power supply terminal, a ground terminal of a signal sampler J1 is grounded, an output terminal of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and one end of a resistor R1, a positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with one end of a resistor R2 and a signal input port of a feedback noise reduction module.
When the invention is used in detail, a power distribution cabinet management system based on the internet comprises a signal sampling module and a feedback noise reduction module, wherein the signal sampling module samples a carrier signal of a signal emitter node in the power distribution cabinet management system based on the internet, the signal sampling module is connected with the feedback noise reduction module, the feedback noise reduction module uses a capacitor C2, an inductor L1 and a resistor R3 to form a resonant loop to compensate the signal frequency, the pass band of a signal is widened, the effect of improving the signal transmission stability is achieved, when the signal frequency is abnormal, series resonance can be caused, the voltage height at two ends of a load resistor R3 is high, the upper limit of the signal frequency of the inductor L1 is just compensated, the effect of supplementing the signal frequency is achieved, in order to ensure that the sampled signal is accurate, the signal does not contain noise interference, because the signal transmission has noise accumulation, once a signal source has noise, will lead to the distortion of the sampling signal received by the internet-based power distribution cabinet management system terminal, therefore use the capacitor C3 as the coupling capacitor, reduce the noise of the output end signal of the operational amplifier AR1, use the triode Q3 to filter the distortion signal at the same time, the capacitor C4 plays the role of the bypass capacitor, use the inductor L2 to filter the abnormal high frequency component at the same time, the capacitor C5, the capacitor C6 to filter the abnormal low frequency component, avoid the frequency abnormality in the noise reduction process, further filter the abnormal frequency signal, on the premise of frequency stability, need to guarantee the stability of the signal waveform, therefore use the triode Q4653925 to detect the output signal of the resonance circuit and the signal potential difference of the emitter of the triode Q7, feed back the signal to the emitter of the triode Q4, wherein use the limiting circuit composed of the diode D3 and the diode D4 to limit the signal potential, play the role of the protection circuit, use the triode, the triode Q1 and the triode Q4 are respectively of NPN type and PNP type to ensure the amplitude of a calibration signal, a feedback signal is fed back to the inverting input end of the operational amplifier AR2 to adjust the effect of the amplitude of the output signal of the operational amplifier AR2, in order to further ensure the accuracy of the amplitude of the signal, the triode Q2 is used for feeding back the potential difference between the output end and the non-inverting input end of the operational amplifier AR2, when the difference value is overlarge, the output signal of the operational amplifier AR2 is not in an error range, the feedback signal is fed back to the inverting input end of the operational amplifier AR1, the noise reduction and frequency stabilization are carried out until the output signal of the operational amplifier AR2 is in the error range, and finally the operational amplifier AR3 is used for amplifying the signals in phase and then is sent to.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (1)
1. A power distribution cabinet management system based on the internet comprises a signal sampling module and a feedback noise reduction module, and is characterized in that the signal sampling module samples a signal emitter node carrier signal in the power distribution cabinet management system based on the internet, the signal sampling module is connected with the feedback noise reduction module, and an output signal of the feedback noise reduction module is sent to a power distribution cabinet management system terminal based on the internet through a signal emitter E1;
the feedback noise reduction module comprises a variable resistor RW1, one end of the variable resistor RW1 is connected with one end of a capacitor C1 and an output port of the signal sampling module, one end of the variable resistor RW1 is connected with one end of a resistor R1, the other end of the variable resistor RW1 is connected with a collector of a triode Q1, the other end of the resistor R1 is connected with one end of an inductor L1, one end of a resistor R1 and a resistor R1, the other end of the resistor R1 and the other end of the inductor L1 are connected with the other end of the capacitor R1 and one end of the capacitor C1, the other end of the capacitor C1 is connected with a base electrode of a triode Q1, an output end of the amplifier AR 6 is connected with a collector of the triode Q1, a resistor R1, a capacitor C1 and one end of the resistor R1, the resistor R1 and one end of the capacitor C1, the other end of the capacitor C4 is grounded, the other end of the resistor R8 is connected with the base of a triode Q1, the emitter of the triode Q1 is connected with the cathode of a diode D3 and the anode of a diode D4, the anode of a diode D3 is connected with the cathode of a diode D4 and the emitter of a triode Q4, the base of a triode Q4 is connected with the other end of a resistor R4, the collector of the triode Q4 is connected with one end of a resistor R4 and the inverting input end of an operational amplifier AR 4, the other end of the operational amplifier AR 4 is grounded, the non-inverting input end of the operational amplifier AR 4 is connected with the other end of an inductor L4, the other end of the capacitor C4 and the base of a triode Q4, the emitter of the triode Q4 is connected with the other end of the resistor R4, the other end of the resistor R4 is connected with the cathode of a diode D4, the output end of the operational amplifier AR 4, the anode of a diode D4, the non-inverting input, One end of the resistor R12 and the other end of the resistor R11 are grounded, the other end of the resistor R12 is connected with the output end of the amplifier AR3 and one end of the resistor R13, and the other end of the resistor R13 is connected with the signal transmitter E1;
the signal sampling module comprises a DAM-3056AH signal sampler J1, a power supply end of a signal sampler J1 is connected with +5V, a grounding end of the signal sampler J1 is grounded, an output end of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and one end of a resistor R1, a positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with one end of a resistor R2 and a signal input port of the feedback noise reduction module, and the other end of the resistor R2 is grounded.
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