CN118054566A - Electric power monitoring equipment - Google Patents
Electric power monitoring equipment Download PDFInfo
- Publication number
- CN118054566A CN118054566A CN202410308693.4A CN202410308693A CN118054566A CN 118054566 A CN118054566 A CN 118054566A CN 202410308693 A CN202410308693 A CN 202410308693A CN 118054566 A CN118054566 A CN 118054566A
- Authority
- CN
- China
- Prior art keywords
- resistor
- control module
- diode
- power
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 86
- 238000004891 communication Methods 0.000 claims abstract description 37
- 238000005070 sampling Methods 0.000 claims abstract description 29
- 230000003750 conditioning effect Effects 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000012806 monitoring device Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 abstract description 4
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 2
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- 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
- Y04S40/126—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 using wireless data transmission
Landscapes
- Transmitters (AREA)
Abstract
The invention discloses power monitoring equipment, which relates to the technical field of power monitoring and comprises a power sampling module, a power monitoring module and a power monitoring module, wherein the power sampling module is used for detecting the current value of power grid power; the signal conditioning module is used for signal conversion, filtering and amplification; the first monitoring control module is used for detecting undervoltage and overvoltage and controlling the access control module to transmit processed signals to the intelligent control module; the communication module is used for establishing a wireless communication network for the intelligent control module and the monitoring terminal; and the second monitoring control module is used for controlling the delay control module to delay the control path control module and transmitting the processed signal to the intelligent control module. The power monitoring equipment disclosed by the invention is used for sampling electric energy of power grid power, processing sampling signals, and transmitting the processed signals to the intelligent control module by the access control module when the monitoring instructions are received by the undervoltage or overvoltage or communication module, and processing the signals by the intelligent control module and transmitting the processed signals to the monitoring terminal by the communication module.
Description
Technical Field
The invention relates to the technical field of power monitoring, in particular to power monitoring equipment.
Background
In a power system, because the power equipment of the power grid is easy to change due to factors such as instability and fluctuation of power generation, ageing of a transmission line and the like when power is supplied, the normal operation of the power grid can be possibly affected, the power equipment of the power grid is required to be monitored in real time, so that relevant protection control is carried out when the power of the power grid is abnormal, the power supply risk of the power grid is reduced, the normal operation of the power grid is ensured, the conventional power monitoring equipment is mostly used for realizing the real-time monitoring of the power grid by a power monitoring system based on a single chip microcomputer and matching with a sampling device, and sampling output is transmitted to a monitoring terminal by a relevant communication device.
Disclosure of Invention
The embodiment of the invention provides power monitoring equipment for solving the problems in the background technology.
According to an embodiment of the present invention, there is provided a power monitoring apparatus including: the system comprises an electric power sampling module, a signal conditioning module, a first monitoring control module, a communication module, a second monitoring control module, a delay control module, a passage control module and an intelligent control module;
The power sampling module is used for detecting the current condition of power output of the power grid through the power sampling circuit and outputting a current signal;
The signal conditioning module is connected with the power sampling module and is used for converting a current signal output by the power sampling module into a voltage signal, and filtering, amplifying and outputting the voltage signal;
the first monitoring control module is connected with the signal conditioning module, is used for carrying out isolation transmission on the voltage signals output by the signal conditioning module, and is used for carrying out undervoltage detection and overvoltage detection on the signals subjected to isolation transmission through the two-way comparison control circuit and respectively outputting a first control signal and a second control signal;
The communication module is connected with the intelligent control module and used for establishing a wireless communication network for the intelligent control module and the monitoring terminal, receiving a monitoring instruction sent by the monitoring terminal and transmitting the monitoring instruction to the second monitoring control module and the intelligent control module, and receiving a signal processed by the intelligent control module and wirelessly transmitting the signal to the monitoring terminal;
The second monitoring control module is connected with the communication module and is used for receiving the monitoring instruction through the trigger circuit and outputting a third control signal;
The delay control module is connected with the second monitoring control module, and is used for triggering the work of the delay control circuit through a third control signal and outputting a delay control signal through the delay control circuit;
the access control module is connected with the delay control module, the signal conditioning module and the first monitoring control module and is used for triggering an access control circuit to select a signal transmission access through the first control signal, the second control signal and the delay control signal and transmitting a signal output by the signal conditioning module to the intelligent control module;
The intelligent control module is connected with the access control module, and is used for clamping and receiving signals output by the access control module and carrying out data interaction with the communication module.
Compared with the prior art, the invention has the beneficial effects that: the power monitoring equipment disclosed by the invention is characterized in that the power sampling module is used for sampling electric energy of power grid power, the signal conditioning module is used for processing sampling signals, the first monitoring control module is used for detecting undervoltage and overvoltage in the future through the two-way comparison control circuit, the control channel control module is used for transmitting the processed signals to the intelligent control module when undervoltage and overvoltage in the future are detected, the intelligent control module is used for processing the processed signals and transmitting the processed signals to the monitoring terminal through the communication module, when a user needs to monitor autonomously, the monitoring command is sent to the communication module through the monitoring terminal, and the second monitoring control module is matched with the delay control module to control the channel control module to delay and transmit the processed signals so as to facilitate the processing and transmission of the intelligent control module and the monitoring terminal to reduce the processing workload of the data, avoid unnecessary data recording and transmission and ensure the monitoring controllability and safety.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a power monitoring device according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a power monitoring device according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a connection of a first monitoring control module according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of a connection of a delay control module according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment 1 referring to fig. 1, a power monitoring apparatus includes: the system comprises an electric power sampling module 1, a signal conditioning module 2, a first monitoring control module 3, a communication module 4, a second monitoring control module 5, a delay control module 6, a passage control module 7 and an intelligent control module 8;
Specifically, the power sampling module 1 is configured to detect a current condition of power output of the power grid through a power sampling circuit and output a current signal;
The signal conditioning module 2 is connected with the power sampling module 1 and is used for converting a current signal output by the power sampling module 1 into a voltage signal, and filtering, amplifying and outputting the voltage signal;
the first monitoring control module 3 is connected with the signal conditioning module 2, and is used for carrying out isolation transmission on the voltage signal output by the signal conditioning module 2, carrying out undervoltage detection and overvoltage detection on the isolated and transmitted signal through a two-way comparison control circuit, and respectively outputting a first control signal and a second control signal;
the communication module 4 is connected with the intelligent control module 8, and is used for establishing a wireless communication network for the intelligent control module 8 and the monitoring terminal, receiving a monitoring instruction sent by the monitoring terminal and transmitting the monitoring instruction to the second monitoring control module 5 and the intelligent control module 8, and receiving a signal processed by the intelligent control module 8 and wirelessly transmitting the signal to the monitoring terminal;
The second monitoring control module 5 is connected with the communication module 4 and is used for receiving the monitoring instruction through the trigger circuit and outputting a third control signal;
the delay control module 6 is connected with the second monitoring control module 5, and is used for triggering the work of the delay control circuit through a third control signal and outputting a delay control signal through the delay control circuit;
The channel control module 7 is connected with the delay control module 6, the signal conditioning module 2 and the first monitoring control module 3 and is used for triggering a channel control circuit to select a signal transmission channel through the first control signal, the second control signal and the delay control signal and transmitting a signal output by the signal conditioning module 2 to the intelligent control module 8;
the intelligent control module 8 is connected with the access control module 7, and is used for clamping and receiving signals output by the access control module 7 and performing data interaction with the communication module 4.
In a specific embodiment, the power sampling module 1 may use a power sampling circuit formed by a current sampling circuit to sample the current of the grid power; the signal conditioning module 2 can adopt a voltage conversion circuit, an operational amplification circuit and a filter circuit, the voltage conversion circuit converts the sampled current signal into a voltage signal, and the operational amplification circuit and the filter circuit amplify and filter the signal; the first monitoring control module 3 can adopt a two-way comparison control circuit to detect the undervoltage and overvoltage of the processed signal; the communication module 4 may adopt, but is not limited to, an RS communication circuit, so as to implement wireless data interaction between the intelligent control module 8 and the monitoring terminal; the second monitoring control module 5 may employ a trigger circuit, which is configured to convert the monitoring command received by the communication module 4 into a level signal; the delay control module 6 can adopt a delay control circuit, and is controlled by a trigger circuit and outputs a delay control signal; the above-mentioned channel control module 7 can adopt the transmission channel of the channel control circuit selection signal formed by analog switch; the intelligent control module 8 may be, but not limited to, a micro-control circuit such as a single chip microcomputer, a DSP, etc., and integrates various components such as an arithmetic unit, a controller, a memory, an input/output unit, etc., so as to implement functions such as signal processing, data storage, module control, timing control, etc.
Embodiment 2, please refer to fig. 2, 3 and 4 on the basis of embodiment 1, wherein the power sampling module 1 includes grid power, a first resistor R1, and a hall sensor U1; the signal conditioning module 2 comprises a second resistor R2, a first capacitor C1, a third resistor R3, a fourth resistor R4, a first operational amplifier OP1 and a fifth resistor R5;
Specifically, one end of the first resistor R1 and the second input end of the hall sensor U1 are respectively connected with the first end and the second end of the grid power, the other end of the first resistor R1 is connected with the first input end of the hall sensor U1, the first output end of the hall sensor U1 is connected with one end of the second resistor R2, one end of the third resistor R3 and one end of the first capacitor C1, the second output end of the hall sensor U1 is connected with the other end of the second resistor R2, the other end of the first capacitor C1 and the ground end, the other end of the third resistor R3 is connected with the inverting end of the first operational amplifier OP1 and is connected with the output end of the first operational amplifier OP1 through the fourth resistor R4, and the in-phase end of the first operational amplifier OP1 is grounded through the fifth resistor R5.
In a specific embodiment, the hall sensor U1 is selected from the group consisting of, but not limited to, HW300B chip, HNV025 chip; the second resistor R2 and the first capacitor C1 form a filter circuit, and the input signal is subjected to filter processing; the first operational amplifier OP1 is optional, but not limited to an OP07 operational amplifier, and is combined with a third resistor R3, a fourth resistor R4 and a fifth resistor R5 to form a voltage conversion circuit.
Further, the signal conditioning module 2 further includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and a second operational amplifier OP2;
Specifically, one end of the sixth resistor R6 is connected to the output end of the first operational amplifier OP1, the other end of the sixth resistor R6 is connected to the inverting end of the second operational amplifier OP2 and is connected to the output end of the second operational amplifier OP2 through the eighth resistor R8, the first monitoring control module 3 and the path control module 7, and the non-inverting end of the second operational amplifier OP2 is grounded through the seventh resistor R7.
In a specific embodiment, the second OP2 is an OP07 OP amp, but is not limited to an OP07 OP amp, and is matched with a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8 to amplify the input signal.
Further, the path control module 7 includes a first analog switch U2, a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4;
Specifically, the third end and the eighth end of the first analog switch U2 are both connected to the output end of the second operational amplifier OP2, the fifth end of the first analog switch U2 is connected to the cathode of the third diode D3 and the cathode of the first diode D1, the sixth end of the first analog switch U2 is connected to the cathode of the second diode D2 and the cathode of the fourth diode D4, the fourth end and the ninth end of the first analog switch U2 are connected to the intelligent control module 8, the anode of the fourth diode D4 is connected to the anode of the third diode D3 and the delay control module 6, and the anode of the first diode D1 and the anode of the second diode D2 are connected to the first monitoring control module 3.
In a specific embodiment, the first analog switch U2 may be a CD4066 chip, and a conductive line is selected to realize transmission of an analog signal; the first diode D1, the second diode D2, the third diode D3, and the fourth diode D4 are used for avoiding the condition of backflow between lines.
Further, the first monitoring control module 3 includes a third operational amplifier OP3, a ninth resistor R9, a first comparator A1, a second comparator A2, a first threshold value, and a second threshold value;
Specifically, the in-phase end of the third operational amplifier OP3 is connected to the output end of the second operational amplifier OP2, the inverting end of the second operational amplifier OP2 is connected to the output end of the second operational amplifier OP2 and is connected to the in-phase end of the first comparator A1 and the inverting end of the second comparator A2 through a ninth resistor R9, the inverting end of the first comparator A1 and the in-phase end of the second comparator A2 are respectively connected to a first threshold value and a second threshold value, and the output end of the first comparator A1 and the output end of the second comparator A2 are respectively connected to the anode of the first diode D1 and the anode of the second diode D2.
In a specific embodiment, the third OP3 is an optional but not limited to LM358 operational amplifier, and is used as a voltage follower circuit; the first comparator A1 and the second comparator A2 may be LM393 comparators for voltage comparison; the first threshold and the second threshold are respectively an about-to-overvoltage value and an about-to-undervoltage value, wherein a voltage interval between the about-to-overvoltage value and the about-to-undervoltage value is a voltage interval in which the power grid power is normal.
Further, the intelligent control module 8 includes a first controller U3, a fifth diode D5, a sixth diode D6, a first power VCC1, a seventh diode D7, and an eighth diode D8;
Specifically, the first IO terminal of the first controller U3 is connected to the anode of the fifth diode D5, the cathode of the sixth diode D6, and the fourth terminal of the first analog switch U2, the second IO terminal of the first controller U3 is connected to the anode of the seventh diode D7, the cathode of the eighth diode D8, and the ninth terminal of the first analog switch U2, both the anode of the sixth diode D6 and the anode of the eighth diode D8 are grounded, and the cathode of the fifth diode D5 and the cathode of the seventh diode D7 are connected to the first power VCC1.
In a specific embodiment, the first controller U3 is selected from but not limited to an ST89C52 single-chip microcomputer and an STM32 single-chip microcomputer; the seventh diode D7 and the eighth diode D8, and the fifth diode D5 and the sixth diode D6 are used for performing voltage clamping processing so that the first controller U3 receives an input signal.
Further, the communication module 4 includes a transmitting port, a first protection tube VD1, a tenth resistor R10, an eleventh resistor R11, and a communication chip U4;
Specifically, the receiving end and the transmitting end of the communication chip U4 are respectively connected with the third IO end and the fourth IO end of the first controller U3, the first address end and the second address end of the communication chip U4 are respectively connected with the first end of the eleventh resistor R11 and the first end of the tenth resistor R10, the second end of the tenth resistor R10 is connected with one end of the first protection tube VD1 and the first end of the transmitting port, and the second end of the eleventh resistor R11 is connected with the other end of the first protection tube VD1 and the second end of the transmitting port.
In a specific embodiment, the communication chip U4 may be, but is not limited to, an RS485 chip, an RS422 chip, or the like, as the communication transceiver of the first controller U3.
Further, the second monitoring control module 5 includes a twelfth resistor R12, a trigger chip U5, a second power VCC2, a second capacitor C2, and a thirteenth resistor R13;
Specifically, the first end of the trigger chip U5 is connected to the second end of the eleventh resistor R11 through the twelfth resistor R12, the second end of the trigger chip U5 is connected to the second end of the tenth resistor R10, the fourth end of the trigger chip U5 is connected to the second power VCC2, the third end of the trigger chip U5 is connected to the first end of the thirteenth resistor R13 and is connected to the ground through the second capacitor C2, and the second end of the thirteenth resistor R13 is connected to the delay control module 6.
In a specific embodiment, the trigger chip U5 is configured to receive a specific monitoring instruction and output a level signal so as to trigger the operation of the delay control module 6, and a specific model is not described in detail.
Further, the delay control module 6 includes a third power VCC3, a fourteenth resistor R14, a first potentiometer RP1, a first switching tube VT1, a third capacitor C3, a first timer U6, a ninth diode D9, a fifteenth resistor R15, a second switching tube VT2, and a sixteenth resistor R16;
Specifically, the third power supply VCC3 is connected to one end of the fourteenth resistor R14, one end of the first potentiometer RP1, a sliding sheet end of the first potentiometer RP1, a fourth end of the first timer U6, an eighth end of the first timer U6, an anode of the ninth diode D9, and a collector of the second switch tube VT2, the other end of the fourteenth resistor R14 is connected to the collector of the first switch tube VT1, the other end of the first potentiometer RP1, one end of the third capacitor C3, a second end, a seventh end, and a sixth end of the first timer U6, a cathode of the ninth diode D9 is connected to a fifth end of the first timer U6, a third end of the first timer U6 is connected to a base of the second switch tube VT2 through a fifteenth resistor R15, an emitter of the second switch tube VT2 is connected to an anode of the fourth diode D4 and to a ground through a sixteenth resistor R16, and the other end of the first switch tube VT1, the other end of the third capacitor C3 and the first end of the first timer U6 are all connected to a thirteenth base of the first switch tube VT 1.
In a specific embodiment, the first timer U6 may be an NE55 timer, which is controlled by the first switching tube VT 1; the first switch tube VT1 can be an NPN triode; the second switch tube VT2 can be an NPN triode, and the working state of the first analog switch U2 is controlled; the first potentiometer RP1 and the third capacitor C3 are used for adjusting the delay time.
The invention relates to a power monitoring device, a Hall sensor U1 samples the current value of a power grid circuit, a sampled signal is filtered, voltage conversion and amplification are carried out through a first capacitor C1, a first operational amplifier OP1 and a second operational amplifier OP2, a third operational amplifier OP3 is used for isolating and transmitting the sampled signal to a first comparator A1 and a second comparator A2, the first comparator A1 and the second comparator A2 are used for judging whether overvoltage or undervoltage is about to occur, when the sampled signal is about to occur, the fifth end or the sixth end of a first analog switch U2 is controlled to be electrified, the third end, the fourth end, the eighth end and the ninth end of the first analog switch U2 are conducted, the first IO end of the first controller U3 receives the signal value exceeding the overvoltage about to occur, the second IO end of the first controller U3 receives a signal value exceeding the undervoltage to be detected, the signal value is processed by the first controller U3 and is wirelessly transmitted to the monitoring terminal through the communication chip U4, when the monitoring terminal sends a monitoring instruction to the communication chip U4, the triggering chip U5 receives the specific monitoring instruction and controls the first switching tube VT1 to be conducted, the first timer U6 outputs a high level, the second switching tube VT2 is controlled to be conducted, the first analog switch U2 transmits the input signal to the first IO end and the second IO end of the first controller U3 respectively, the first controller U3 receives, records and transmits the signal, and the first controller U3 can conduct differential processing on the signal received by the first IO end and the second IO end to judge the error degree of the signal input simultaneously.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. An electric power monitoring device, characterized in that,
The power monitoring device includes: the system comprises an electric power sampling module, a signal conditioning module, a first monitoring control module, a communication module, a second monitoring control module, a delay control module, a passage control module and an intelligent control module;
The power sampling module is used for detecting the current condition of power output of the power grid through the power sampling circuit and outputting a current signal;
The signal conditioning module is connected with the power sampling module and is used for converting a current signal output by the power sampling module into a voltage signal, and filtering, amplifying and outputting the voltage signal;
the first monitoring control module is connected with the signal conditioning module, is used for carrying out isolation transmission on the voltage signals output by the signal conditioning module, and is used for carrying out undervoltage detection and overvoltage detection on the signals subjected to isolation transmission through the two-way comparison control circuit and respectively outputting a first control signal and a second control signal;
The communication module is connected with the intelligent control module and used for establishing a wireless communication network for the intelligent control module and the monitoring terminal, receiving a monitoring instruction sent by the monitoring terminal and transmitting the monitoring instruction to the second monitoring control module and the intelligent control module, and receiving a signal processed by the intelligent control module and wirelessly transmitting the signal to the monitoring terminal;
The second monitoring control module is connected with the communication module and is used for receiving the monitoring instruction through the trigger circuit and outputting a third control signal;
The delay control module is connected with the second monitoring control module, and is used for triggering the work of the delay control circuit through a third control signal and outputting a delay control signal through the delay control circuit;
the access control module is connected with the delay control module, the signal conditioning module and the first monitoring control module and is used for triggering an access control circuit to select a signal transmission access through the first control signal, the second control signal and the delay control signal and transmitting a signal output by the signal conditioning module to the intelligent control module;
The intelligent control module is connected with the access control module, and is used for clamping and receiving signals output by the access control module and carrying out data interaction with the communication module.
2. The power monitoring device of claim 1, wherein the power sampling module comprises grid power, a first resistor, a hall sensor; the signal conditioning module comprises a second resistor, a first capacitor, a third resistor, a fourth resistor, a first operational amplifier and a fifth resistor;
One end of the first resistor and the second input end of the Hall sensor are respectively connected with the first end and the second end of the power grid power, the other end of the first resistor is connected with the first input end of the Hall sensor, the first output end of the Hall sensor is connected with one end of the second resistor, one end of the third resistor and one end of the first capacitor, the second output end of the Hall sensor is connected with the other end of the second resistor, the other end of the first capacitor and the ground end, the other end of the third resistor is connected with the inverting end of the first operational amplifier and the output end of the first operational amplifier through the fourth resistor, and the non-inverting end of the first operational amplifier is grounded through the fifth resistor.
3. The power monitoring device of claim 2, wherein the signal conditioning module further comprises a sixth resistor, a seventh resistor, an eighth resistor, a second op-amp;
one end of the sixth resistor is connected with the output end of the first operational amplifier, the other end of the sixth resistor is connected with the inverting end of the second operational amplifier and is connected with the output end of the second operational amplifier, the first monitoring control module and the access control module through the eighth resistor, and the in-phase end of the second operational amplifier is grounded through the seventh resistor.
4. A power monitoring device according to claim 3, wherein the path control module comprises a first analog switch, a first diode, a second diode, a third diode, a fourth diode;
The third end and the eighth end of the first analog switch are both connected with the output end of the second operational amplifier, the fifth end of the first analog switch is connected with the cathode of the third diode and the cathode of the first diode, the sixth end of the first analog switch is connected with the cathode of the second diode and the cathode of the fourth diode, the fourth end and the ninth end of the first analog switch are connected with the intelligent control module, the anode of the fourth diode is connected with the anode of the third diode and the delay control module, and the anode of the first diode and the anode of the second diode are connected with the first monitoring control module.
5. The power monitoring device of claim 4, wherein the first monitoring control module comprises a third op-amp, a ninth resistor, a first comparator, a second comparator, a first threshold, a second threshold;
The in-phase end of the third operational amplifier is connected with the output end of the second operational amplifier, the inverting end of the second operational amplifier is connected with the output end of the second operational amplifier and is connected with the in-phase end of the first comparator and the inverting end of the second comparator through a ninth resistor, the inverting end of the first comparator and the in-phase end of the second comparator are respectively connected with a first threshold value and a second threshold value, and the output end of the first comparator and the output end of the second comparator are respectively connected with the anode of the first diode and the anode of the second diode.
6. The power monitoring device of claim 4, wherein the intelligent control module comprises a first controller, a fifth diode, a sixth diode, a first power supply, a seventh diode, and an eighth diode;
The first IO end of the first controller is connected with the anode of the fifth diode, the cathode of the sixth diode and the fourth end of the first analog switch, the second IO end of the first controller is connected with the anode of the seventh diode, the cathode of the eighth diode and the ninth end of the first analog switch, the anode of the sixth diode and the anode of the eighth diode are grounded, and the cathode of the fifth diode and the cathode of the seventh diode are connected with a first power supply.
7. The power monitoring device of claim 6, wherein the communication module comprises a transmission port, a first protection tube, a tenth resistor, an eleventh resistor, and a communication chip;
The receiving end and the transmitting end of the communication chip are respectively connected with the third IO end and the fourth IO end of the first controller, the first address end and the second address end of the communication chip are respectively connected with the first end of the eleventh resistor and the first end of the tenth resistor, the second end of the tenth resistor is connected with one end of the first protection tube and the first end of the transmitting port, and the second end of the eleventh resistor is connected with the other end of the first protection tube and the second end of the transmitting port.
8. The power monitoring device of claim 7, wherein the second monitoring control module comprises a twelfth resistor, a trigger chip, a second power source, a second capacitor, a thirteenth resistor;
The first end of the trigger chip is connected with the second end of the eleventh resistor through a twelfth resistor, the second end of the trigger chip is connected with the second end of the tenth resistor, the fourth end of the trigger chip is connected with a second power supply, the third end of the trigger chip is connected with the first end of the thirteenth resistor and is connected with the ground end through a second capacitor, and the second end of the thirteenth resistor is connected with the delay control module.
9. The power monitoring device of claim 8, wherein the delay control module comprises a third power supply, a fourteenth resistor, a first potentiometer, a first switch tube, a third capacitor, a first timer, a ninth diode, a fifteenth resistor, a second switch tube, and a sixteenth resistor;
The third power supply is connected with one end of a fourteenth resistor, one end of a first potentiometer, a sliding sheet end of the first potentiometer, a fourth end of the first timer, an eighth end of the first timer, an anode of a ninth diode and a collector of a second switch tube, the other end of the fourteenth resistor is connected with the collector of the first switch tube, the other end of the first potentiometer, one end of a third capacitor, a second end, a seventh end and a sixth end of the first timer, a cathode of the ninth diode is connected with a fifth end of the first timer, a third end of the first timer is connected with a base electrode of the second switch tube through the fifteenth resistor, an emitter of the second switch tube is connected with an anode of the fourth diode and is connected with a ground end through a sixteenth resistor, an emitter of the first switch tube, the other end of the third capacitor and the first end of the first timer are all grounded, and a base electrode of the first switch tube is connected with a second end of the thirteenth resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410308693.4A CN118054566B (en) | 2024-03-19 | 2024-03-19 | Electric power monitoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410308693.4A CN118054566B (en) | 2024-03-19 | 2024-03-19 | Electric power monitoring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118054566A true CN118054566A (en) | 2024-05-17 |
| CN118054566B CN118054566B (en) | 2024-06-14 |
Family
ID=91051799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410308693.4A Active CN118054566B (en) | 2024-03-19 | 2024-03-19 | Electric power monitoring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118054566B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203191500U (en) * | 2013-02-21 | 2013-09-11 | 蒋正坤 | Multifunctional electrical monitoring early warning device |
| US20150081126A1 (en) * | 2013-07-16 | 2015-03-19 | GridEdge Networks, Inc. | Method and system for distributed generation trip protection using power line carrier signaling |
| CN104485742A (en) * | 2014-12-12 | 2015-04-01 | 国家电网公司 | Power terminal in wireless power private network and management method of power terminal |
| CN208127987U (en) * | 2018-03-27 | 2018-11-20 | 龙岩亿隆电力设备有限公司 | A kind of novel intelligent distribution transformer terminals based on cloud platform |
| RU2727525C1 (en) * | 2019-12-02 | 2020-07-22 | Общество с ограниченной ответственностью Научно-производственное объединение "Цифровые измерительные трансформаторы" (ООО НПО "ЦИТ") | Method of monitoring, protection and control of electric substation equipment |
| CN218920273U (en) * | 2022-10-28 | 2023-04-25 | 深圳亘存科技有限责任公司 | Chip detection circuit |
-
2024
- 2024-03-19 CN CN202410308693.4A patent/CN118054566B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203191500U (en) * | 2013-02-21 | 2013-09-11 | 蒋正坤 | Multifunctional electrical monitoring early warning device |
| US20150081126A1 (en) * | 2013-07-16 | 2015-03-19 | GridEdge Networks, Inc. | Method and system for distributed generation trip protection using power line carrier signaling |
| CN104485742A (en) * | 2014-12-12 | 2015-04-01 | 国家电网公司 | Power terminal in wireless power private network and management method of power terminal |
| CN208127987U (en) * | 2018-03-27 | 2018-11-20 | 龙岩亿隆电力设备有限公司 | A kind of novel intelligent distribution transformer terminals based on cloud platform |
| RU2727525C1 (en) * | 2019-12-02 | 2020-07-22 | Общество с ограниченной ответственностью Научно-производственное объединение "Цифровые измерительные трансформаторы" (ООО НПО "ЦИТ") | Method of monitoring, protection and control of electric substation equipment |
| CN218920273U (en) * | 2022-10-28 | 2023-04-25 | 深圳亘存科技有限责任公司 | Chip detection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118054566B (en) | 2024-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117559610B (en) | Emergency protection system for electric automobile during high-voltage charging | |
| CN118054566B (en) | Electric power monitoring equipment | |
| CN208635285U (en) | A kind of intelligent air condition | |
| CN206759164U (en) | A kind of intelligent electric energy detection and protection device | |
| CN217931799U (en) | Wide voltage input signal acquisition circuit | |
| CN205104018U (en) | Air conditioner is wireless remote control ware for self -starting | |
| CN208127984U (en) | A kind of solar integration street lamp camera system | |
| CN209586594U (en) | Wind-powered electricity generation multichannel lightning monitoring system | |
| CN207977724U (en) | A kind of fire-fighting two lines bus short-circuit protection circuit of hand-held encoder | |
| CN213027968U (en) | Room temperature acquisition controller | |
| CN212381202U (en) | Signal receiving anti-interference circuit for water environment monitoring control terminal | |
| CN212108909U (en) | Special air conditioner controller and intelligent temperature control system for granary | |
| CN209327317U (en) | A kind of low-power consumption methane transducer of remote power-feeding | |
| CN220271996U (en) | Safety warning robot monitoring alarm system | |
| CN203368153U (en) | Intelligent controller for low voltage circuit breaker | |
| CN219697902U (en) | Shared bicycle monitoring sniffing device based on solar charging | |
| CN217985106U (en) | Intelligent gateway communication state control device | |
| CN117269586B (en) | Overvoltage detection circuit of power system | |
| CN218240755U (en) | Wireless subway station temperature and humidity control system | |
| CN220107660U (en) | Monitoring system for alternating current power supply | |
| CN104503418A (en) | Online power station fuel store environment monitoring device | |
| CN216853336U (en) | Motor-pumped well irrigation intelligent control ware | |
| CN111306708A (en) | Air conditioner load demand response control device and method | |
| CN212806496U (en) | Automatic roasting system of tunnel kiln | |
| CN218352158U (en) | Protection circuit based on voltage sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |