CN114415100A - Electric energy metering device on-site detection equipment and data transmission method thereof - Google Patents
Electric energy metering device on-site detection equipment and data transmission method thereof Download PDFInfo
- Publication number
- CN114415100A CN114415100A CN202111547831.7A CN202111547831A CN114415100A CN 114415100 A CN114415100 A CN 114415100A CN 202111547831 A CN202111547831 A CN 202111547831A CN 114415100 A CN114415100 A CN 114415100A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- voltage
- metering device
- energy metering
- detection data
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
- H04Q2209/43—Arrangements in telecontrol or telemetry systems using a wireless architecture using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
Abstract
The invention discloses an electric energy metering device on-site detection device and a data transmission method thereof. In the invention, the field detection equipment is used for detecting the electric energy metering device to obtain detection data, the detection data is transmitted to the upper computer through the Bluetooth communication module, the upper computer is used for recording the detection data, so that the detection process and the data recording can be carried out simultaneously, the recording error of an operator is avoided, after the detection data is formed, the detection data is transmitted to the upper computer through the Bluetooth communication module, the detection data is automatically recorded, the problems that the error is easy to occur in the process of manually recording the detection data by the operator and subsequently inputting the detection data into a computer, other operators are required to check repeatedly, and the man-machine work efficiency is low are solved, and the detection efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of electric energy detection, in particular to an electric energy metering device field detection device and a data transmission method thereof.
Background
When the existing electric energy metering device is subjected to field detection, an operator needs to complete a large amount of repetitive work, the recording of a paper operation form needs to be completed in the field detection process, and the paper operation record form needs to be converted into an electronic version after the detection is completed.
Based on the above, there is a need for an on-site detection device for an electric energy metering device and a data transmission method thereof, which can realize automatic recording of detection data to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems and provides an electric energy metering device field detection device and a data transmission method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the field detection equipment of the electric energy metering device comprises an upper computer, wherein the field detection equipment is in communication connection with the upper computer through a Bluetooth communication module;
the field detection equipment is used for detecting the electric energy metering device to obtain detection data, the detection data are transmitted to the upper computer through the Bluetooth communication module, and the upper computer is used for recording the detection data.
As a further description of the above technical solution:
the upper computer is used for transmitting a request message to the on-site detection equipment through the Bluetooth communication module, the on-site detection equipment is used for detecting the electric energy metering device according to the request message to obtain detection data, encrypting the detection data to form a response message, transmitting the response message to the upper computer through the Bluetooth communication module, and the upper computer is used for decrypting data according to the response message to obtain the detection data and storing and displaying the detection data.
As a further description of the above technical solution:
the Bluetooth communication module comprises a first Bluetooth module and a second Bluetooth module, the first Bluetooth module is located at the site detection equipment, the second Bluetooth module is located at the upper computer, and the first Bluetooth module and the second Bluetooth module are in communication connection through a Bluetooth protocol.
As a further description of the above technical solution:
the field detection equipment comprises an analog input channel, a sample-and-hold circuit, an A/D converter and a digital signal processor, wherein the analog input channel is connected with the sample-and-hold circuit, the sample-and-hold circuit is connected with the A/D converter, and the A/D converter is connected with the digital signal processor;
the analog input channel is used for respectively collecting voltage and current in a voltage and current secondary loop of the electric energy metering device, the sampling and holding module is used for enabling the voltage and the current to be synchronously sampled, the A/D converter is used for converting the voltage and the current which are synchronously sampled from analog signals into digital signals, and the digital signal processor is used for processing the voltage and the current which are in the digital signals to form detection data.
As a further description of the above technical solution:
the analog input channel comprises a voltage acquisition module and a current acquisition module, the voltage acquisition module is used for respectively sampling three-phase voltage in a voltage and current secondary circuit of the electric energy metering device through a precision resistor, and the current acquisition module is used for sampling three-phase current in the current secondary circuit of the electric energy metering device by utilizing an internal precision mutual inductor or a 5A/1A pincerlike mutual inductor.
As a further description of the above technical solution:
the field detection equipment is connected with the electric energy metering device in a voltage parallel connection and current series connection mode so as to verify the electric energy metering device to obtain a verification result, and the verification result is the detection data.
As a further description of the above technical solution:
the field detection equipment is also used for detecting the PT secondary end voltage and the electric energy metering device end voltage, and calculating a PT secondary circuit voltage drop relative value according to the PT secondary end voltage and the electric energy metering device end voltage, wherein the PT secondary end voltage, the electric energy metering device end voltage and the PT secondary circuit voltage drop relative value are the detection data.
As a further description of the above technical solution:
the field detection equipment is also used for detecting the PT secondary end voltage and the PT line current value, and calculating conductance, susceptance and admittance according to the PT secondary end voltage and the PT line current value, wherein the PT secondary end voltage, the PT line current value, the conductance, the susceptance and the admittance are the detection data.
As a further description of the above technical solution:
the on-site detection equipment is also used for detecting the CT terminal voltage and the CT line current value, and calculating resistance, reactance and impedance according to the CT terminal voltage and the CT line current value, wherein the CT terminal voltage, the CT line current value, the resistance, the reactance and the impedance are the detection data.
As a further description of the above technical solution:
the data transmission method comprises the following steps:
the method comprises the following steps that firstly, an electric energy metering device is detected by using field detection equipment to obtain detection data;
secondly, transmitting the detection data to an upper computer by using a Bluetooth communication module;
and thirdly, recording the detection data by using the upper computer.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the invention, the field detection equipment is in communication connection with the upper computer through the Bluetooth communication module, and is used for detecting the electric energy metering device to obtain detection data, the detection data is transmitted to the upper computer through the Bluetooth communication module, the upper computer is used for recording the detection data, so that the detection process and the data recording can be carried out simultaneously, the recording error of an operator is avoided, after the detection data is formed, the detection data is immediately transmitted to the upper computer through the Bluetooth communication module, the detection data is automatically recorded, the problems that the detection data is easily recorded by the operator manually and the error is easily caused in the subsequent process of recording the detection data into a computer, other operators need to check repeatedly, and the man-machine working efficiency is not high are solved, and the detection efficiency is greatly improved.
Drawings
FIG. 1 is a schematic diagram of the connection between the on-site detection equipment and the upper computer in the invention;
FIG. 2 is a first hardware schematic of the present invention;
FIG. 3 is a second hardware schematic of the present invention;
FIG. 4 is a third hardware schematic of the present invention;
FIG. 5 is a fourth hardware schematic of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-5, an on-site testing device for an electric energy metering device is communicatively connected to an upper computer through a bluetooth communication module, the on-site testing device is used for testing the electric energy metering device to obtain testing data, and transmitting the testing data to the upper computer through the bluetooth communication module, the upper computer is used for recording the testing data, and further after the testing data is formed, the testing data is transmitted to the upper computer through the external or internal bluetooth communication module to automatically record the testing data, so that paperless operation of the existing device in the testing process is realized, the problems that an operator easily makes mistakes in the manual recording of the testing data and subsequent computer recording process, the checking is repeatedly performed by other operators, the man-machine efficiency is low are solved, the testing efficiency is greatly improved, and after the testing is completed, the testing data detected at this time is stored in the upper computer, the automatic issuing of the detection report of the electric energy metering device can be completed, the repeated work is reduced, the operation efficiency is improved, and the problem that the efficiency is lower due to the last detection report of the electric energy metering device in the prior art is solved.
Specifically, the upper computer carries a request message, the request message is used for transmitting the request message to on-site detection equipment through the Bluetooth communication module, a detection request is sent to the on-site detection equipment, after the on-site detection equipment obtains the request message, the electric energy metering device is detected according to the request message, namely, a detection task is executed on the corresponding equipment, data collection is carried out, detection data are obtained, the on-site detection equipment encrypts the detection data to form a response message, the response message contains encrypted data and transmits the response message to the upper computer through the Bluetooth communication module, after the upper computer receives the response message, data decryption is carried out according to the response message, the detection data are obtained, and the detection data are stored and displayed.
The Bluetooth communication module comprises a first Bluetooth module located at the site detection equipment and a second Bluetooth module located at the upper computer, the first Bluetooth module and the second Bluetooth module are in communication connection through a Bluetooth protocol, namely, the upper computer is connected with the site detection terminal through the Bluetooth protocol, so that a standardized protocol for the site detection data transmission of the electric energy metering device is formed, the problem that the currently used site detection equipment of the electric energy metering device has no unified communication standard is solved, and equipment of each manufacturer adopts different communication modes and can not realize standardized data transmission.
Specifically, in the application of bluetooth data transmission, a pair of serial port data communication is one of the most common applications, pairing information between two bluetooth modules is set in advance before the first bluetooth module and the second bluetooth module leave a factory, information such as a PIN code and an address of the first bluetooth module is prestored in the second bluetooth module, a link is automatically established after the two bluetooth modules are powered on, transparent serial port transmission is performed, intervention of a peripheral circuit is not needed, and the first bluetooth module is in a silent state or a development state. When the first bluetooth module is in the silent state, the first bluetooth module is only searched by the second bluetooth module, i.e. the first bluetooth module can only communicate with the specified second bluetooth module and cannot be searched by other bluetooth modules. When the first Bluetooth module is in a development state, the first Bluetooth module can be searched by any Bluetooth module, namely, the first Bluetooth module can be searched by the appointed second Bluetooth module, and can also be searched by other Bluetooth modules, and a link can be established with any Bluetooth module.
The field detection equipment adopts ISM common frequency band wireless communication or power line carrier communication technology to carry out data transmission communication with the upper computer, the accuracy of electric energy metering is not influenced during working, and the communication distance is more than 1 kilometer. The upper computer transmits a synchronous signal, the field detection equipment firstly realizes a synchronous state with the upper computer after receiving the synchronous signal, then the field detection equipment transmits detection data to the upper computer through the ISM synchronous module, and the upper computer receives the detection data and stores and records the detection data.
The following further describes the detection data obtained by the on-site detection device of the present embodiment:
as shown in fig. 3, the field test apparatus of the present embodiment includes an analog input channel, a sample-and-hold circuit, an a/D converter, a digital signal processor, a central processing unit ARM, and a peripheral device. The analog input channel is connected with a sample-and-hold circuit, the sample-and-hold circuit is connected with an A/D converter, the A/D converter is connected with a digital signal processor, and the digital signal processor is connected with a central processing unit ARM.
The analog input channel is used for respectively collecting voltage and current in a voltage and current secondary circuit of the electric energy metering device. Specifically, the analog input channel comprises a voltage acquisition module and a current acquisition module. The voltage acquisition module is used for respectively sampling three-phase voltage in a voltage and current secondary circuit of the electric energy metering device through the precision resistor, namely, in an analog input channel, the three-phase voltage is directly accessed and is subjected to voltage division sampling through the precision resistor. The current acquisition module is used for sampling three-phase current in a voltage current secondary circuit of the electric energy metering device by utilizing an internal precise mutual inductor or a 5A/1A pincerlike mutual inductor. Two sampling modes are adopted during current sampling, namely a built-in precision mutual inductor and a 5A/1A clamp mutual inductor, the built-in precision mutual inductor is adopted for current sampling in a current loop internal connection method (or a serial connection method), and the 5A clamp mutual inductor or the 1A clamp mutual inductor is adopted for current sampling in a clamp meter method so as to meet different requirements of on-site verification.
The sampling and holding module is used for synchronously sampling voltage and current, namely simultaneously sampling each phase of voltage and current, ensuring the synchronism of sampling and inputting the voltages and the currents to the digital signal processor in a serial mode. The sampling and holding module can comprise an eight-out-of-one switch, an amplifying and shaping circuit and a phase-locked loop which are connected in sequence.
The A/D converter is used for converting the synchronously sampled voltage and current from an analog signal to a digital signal, and the A/D converter can adopt a 6-path 16-bit A/D sampling chip which is connected with a digital signal processor through a 16-bit data bus.
The digital signal processor is used for processing the voltage and the current which are in the digital signals to form detection data. Specifically, the digital signal processor performs high-speed operation and processing on the sampling signals (namely, voltage and current signals), so that waveforms of the voltage and the current in a test field can be obtained, a waveform diagram can be drawn, 1-51 times of harmonic data of the voltage and the current in the test field can be tested, the data reading function of the electric energy meter can be realized, and the processing result is transmitted to the central processing unit ARM through the bus.
The central processing unit ARM carries out post-processing on the processing result of the digital signal processor, and functions such as man-machine conversation, data storage and function switching are achieved, the man-machine conversation is operation on-site detection equipment, the functions are switched to different wiring modes which can be suitable for the electric energy metering device, the display is a true color large screen with 1024 x 480 resolution, and background colors can be adjusted to adapt to different environments.
As shown in fig. 4, the field test device is connected to the electric energy metering device in a voltage parallel and current series manner to check the electric energy metering device to obtain a check result, which is the test data. The electric energy metering device can be an electric energy meter, the electric energy meter is subjected to field calibration based on a standard meter method, specifically, during field calibration, field detection equipment is used as the standard meter, a user electric energy meter is used as a to-be-detected meter, during wiring, the standard meter and the electric energy meter are connected in parallel by adopting voltage and in series current, and the running states of the standard meter and the electric energy meter are ensured to be the same. During calibration, the standard meter and the electric energy meter acquire voltage and current signals of a voltage and current secondary circuit of the electric energy meter, and the error value of the electric energy meter can be calculated by acquiring the number of actually measured pulses of the standard meter within a period of time and then comparing the number of the actually measured pulses with the calculated pulse value. The actual measurement pulse number is generally obtained by setting the number of turns of an ammeter, and the calculated pulse value is generally obtained by calculation according to the constant and the number of turns of the ammeter and the number of pulses of a standard ammeter. Based on the method, the active and reactive accuracies of the three-phase three-wire, three-phase four-wire and single-phase electric energy meters can be checked on site, the wiring result can be judged through a hexagonal diagram, and the correction coefficient of wrong wiring is provided for electric quantity compensation calculation.
As shown in fig. 5, the field detection device of this embodiment is further configured to detect a PT secondary terminal voltage and a terminal voltage of the electric energy metering device, and calculate a PT secondary circuit voltage drop relative value according to the PT secondary terminal voltage and the terminal voltage of the electric energy metering device, where the PT secondary terminal voltage, the terminal voltage of the electric energy metering device, and the PT secondary circuit voltage drop relative value are secondary voltage drop detection data of the voltage transformer. Specifically, the electric energy metering device can be an electric energy meter, the PT secondary end voltage refers to the end voltage on the side of a voltage transformer in two ends of a cable between the voltage transformer and the electric energy meter, the voltage on the other end is the voltage on the end of the electric energy meter, and the PT secondary end voltage and the voltage on the end of the electric energy meter can be obtained through sampling of voltage signals. On the basis of the principle of a differential measurement method, a voltage drop relative value of a secondary circuit of the voltage transformer (namely, a voltage drop relative value of the PT secondary circuit) can be calculated according to a formula (1) by measuring a ratio difference f and a phase difference delta between the voltage of the PT secondary circuit and the voltage of the electric energy meter.
In the formula (1), the delta u (%) is a relative value of the pressure drop of the PT secondary circuit; and u is the rated secondary voltage of the voltage transformer. Since the relative value of Δ u (%) pressure drop is based on the ratio differences f (%), and the phase difference δ ('), the error amounts are mainly measured in laboratory tests with the ratio differences f (%), and the phase difference δ (').
The field detection equipment of the embodiment is also used for detecting the PT secondary end voltage and the PT line current value, and calculating conductance, susceptance and admittance according to the PT secondary end voltage and the PT line current value, wherein the PT secondary end voltage, the PT line current value, the conductance, the susceptance and the admittance are secondary load detection data of the voltage transformer. Specifically, the field detection equipment detects the PT terminal voltage and the current value on the PT line, calculates the conductance and the susceptance according to the voltage and current data, and then calculates the admittance value according to the conductance and the susceptance to realize the PT secondary load test. It should be noted that conductance is the reciprocal of resistance, susceptance is the derivative of reactance, admittance is the composite parameter of conductance and susceptance, and is expressed by complex number, and the real part is conductance and the imaginary part is susceptance.
The field detection equipment of the embodiment is also used for detecting the CT terminal voltage and the CT line current value, and calculating resistance, reactance and impedance according to the CT terminal voltage and the CT line current value, wherein the CT terminal voltage, the CT line current value, the resistance, the reactance and the impedance are the secondary load detection data of the current transformer. Specifically, the field detection equipment detects the voltage of a CT end and the current value on a CT circuit, calculates the resistance and the reactance according to the voltage and current data, and then calculates the impedance value according to the resistance and the reactance to complete the CT secondary load test. It should be noted that the resistance is a ratio of voltage to current. Reactance is the ratio of voltage to current when an alternating current drops through an inductance or capacitance. Impedance is a complex parameter of resistance and reactance, and is expressed by complex number, wherein the real part is resistance and the imaginary part is reactance.
The field detection equipment of this embodiment adopts power line carrier wireless transmission technology, need not draw between electric energy meter side and PT end and establish interim cable, stopped from the test principle and established the electric wire netting accident that the cable probably arouses because of drawing, both guaranteed the accuracy of electric energy measurement, do not influence the safety and stability operation of electric wire netting again, it is big to have solved the work load of acting as go-between when using traditional PT secondary circuit pressure drop tester to test, go out the difficult problem of accident easily, the problem of the data transmission anomaly that traditional wireless transmission mode caused by the influence of signal intensity has been avoided simultaneously.
A data transmission method of an electric energy metering device field detection device comprises the following steps:
the method comprises the following steps that firstly, an electric energy metering device is detected by using field detection equipment to obtain detection data;
secondly, transmitting the detection data to an upper computer by using a Bluetooth communication module;
and thirdly, recording the detection data by using the upper computer.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The field detection equipment of the electric energy metering device comprises an upper computer and is characterized in that the field detection equipment is in communication connection with the upper computer through a Bluetooth communication module;
the field detection equipment is used for detecting the electric energy metering device to obtain detection data, the detection data are transmitted to the upper computer through the Bluetooth communication module, and the upper computer is used for recording the detection data.
2. The electric energy metering device field detection equipment according to claim 1, wherein the upper computer is configured to transmit a request message to the field detection equipment through the bluetooth communication module, the field detection equipment is configured to detect the electric energy metering device according to the request message to obtain detection data, encrypt the detection data to form a response message, transmit the response message to the upper computer through the bluetooth communication module, and the upper computer is configured to decrypt data according to the response message to obtain the detection data and store and display the detection data.
3. The electric energy metering device field detection equipment as claimed in claim 1, wherein the bluetooth communication module comprises a first bluetooth module located at the field detection equipment and a second bluetooth module located at the upper computer, and the first bluetooth module and the second bluetooth module are in communication connection through a bluetooth protocol.
4. The electric energy metering device on-site detection device as claimed in claim 1, wherein the on-site detection device comprises an analog input channel, a sample-and-hold circuit, an A/D converter and a digital signal processor, the analog input channel is connected with the sample-and-hold circuit, the sample-and-hold circuit is connected with the A/D converter, and the A/D converter is connected with the digital signal processor;
the analog input channel is used for respectively collecting voltage and current in a voltage and current secondary loop of the electric energy metering device, the sampling and holding module is used for enabling the voltage and the current to be synchronously sampled, the A/D converter is used for converting the voltage and the current which are synchronously sampled from analog signals into digital signals, and the digital signal processor is used for processing the voltage and the current which are in the digital signals to form detection data.
5. The on-site detection equipment for the electric energy metering device according to claim 4, wherein the analog input channel comprises a voltage acquisition module and a current acquisition module, the voltage acquisition module is used for respectively sampling three-phase voltages in a voltage current secondary circuit of the electric energy metering device through a precision resistor, and the current acquisition module is used for sampling three-phase currents in a current secondary circuit of the electric energy metering device by using an internal precision mutual inductor or a 5A/1A pincerlike mutual inductor.
6. The on-site detection equipment for the electric energy metering device according to claim 1, wherein the on-site detection equipment is connected with the electric energy metering device in a voltage parallel connection and current series connection mode so as to verify the electric energy metering device to obtain a verification result, and the verification result is the detection data.
7. The on-site detecting equipment for the electric energy metering device as claimed in claim 1, wherein the on-site detecting equipment is further configured to detect a PT secondary terminal voltage and an electric energy metering device terminal voltage, and calculate a PT secondary circuit voltage drop relative value according to the PT secondary terminal voltage and the electric energy metering device terminal voltage, and the PT secondary terminal voltage, the electric energy metering device terminal voltage and the PT secondary circuit voltage drop relative value are the secondary voltage drop detection data of the voltage transformer.
8. The on-site detecting device for the electric energy metering device of claim 1, wherein the on-site detecting device is further configured to detect a PT secondary voltage and a PT line current value, and calculate conductance, susceptance and admittance according to the PT secondary voltage and the PT line current value, and the PT secondary voltage, the PT line current value, the conductance, the susceptance and the admittance are the secondary load detection data of the voltage transformer.
9. The on-site detecting device for the electric energy metering device of claim 1, wherein the on-site detecting device is further configured to detect a CT terminal voltage and a CT line current value, and calculate a resistance, a reactance and an impedance according to the CT terminal voltage and the CT line current value, wherein the CT terminal voltage, the CT line current value, the resistance, the reactance and the impedance are detection data of the secondary load of the current transformer.
10. A data transmission method of an electric energy metering device field detection device is characterized by comprising the following steps:
the method comprises the following steps that firstly, an electric energy metering device is detected by using field detection equipment to obtain detection data;
secondly, transmitting the detection data to an upper computer by using a Bluetooth communication module;
and thirdly, recording the detection data by using the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547831.7A CN114415100A (en) | 2021-12-16 | 2021-12-16 | Electric energy metering device on-site detection equipment and data transmission method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111547831.7A CN114415100A (en) | 2021-12-16 | 2021-12-16 | Electric energy metering device on-site detection equipment and data transmission method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114415100A true CN114415100A (en) | 2022-04-29 |
Family
ID=81268108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111547831.7A Pending CN114415100A (en) | 2021-12-16 | 2021-12-16 | Electric energy metering device on-site detection equipment and data transmission method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114415100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115754397A (en) * | 2022-10-31 | 2023-03-07 | 云南电网有限责任公司昆明供电局 | Multifunctional testing system and method for seamlessly connecting high-precision calculation of electric quantity |
-
2021
- 2021-12-16 CN CN202111547831.7A patent/CN114415100A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115754397A (en) * | 2022-10-31 | 2023-03-07 | 云南电网有限责任公司昆明供电局 | Multifunctional testing system and method for seamlessly connecting high-precision calculation of electric quantity |
| CN115754397B (en) * | 2022-10-31 | 2023-12-05 | 云南电网有限责任公司昆明供电局 | Multifunctional testing system and method for seamless connection high-precision electric quantity calculation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201444193U (en) | Comprehensive error detection device used for digital electric energy measuring device | |
| CN103149546B (en) | The field integrated tester of a kind of portable electric energy measuring terminal | |
| CN105005016B (en) | A kind of three-phase electric energy meter on-site check system and its method | |
| CN111722044A (en) | Direct current charging pile testing method, device and equipment based on frequency sweep calibration shunt | |
| CN103063926B (en) | A kind of method of testing of low-voltage power line narrowband carrier termination and proving installation | |
| CN210954315U (en) | High-low voltage electricity inspection comprehensive tester with primary current measurement | |
| CN104407209A (en) | Energy efficiency metering detection method of distribution transformer | |
| CN105372620A (en) | Power metering detector | |
| CN114415100A (en) | Electric energy metering device on-site detection equipment and data transmission method thereof | |
| CN106483397A (en) | A kind of electric energy quality detection device of high accuracy high bandwidth and measuring method | |
| CN206832977U (en) | Electronic mutual inductor verification system | |
| CN2426609Y (en) | High voltage equipment electric parameter measuring device | |
| CN201319049Y (en) | High-tension current mutual-inductor transformation ratio tester | |
| CN106443567A (en) | Real-load test system for electric energy meters | |
| CN106199486A (en) | A kind of measurement system of power meter temperature impact test | |
| CN206460114U (en) | The detecting system of intelligent substation through-flow test | |
| CN206557369U (en) | High-voltage electric-energy meter on-line monitoring system based on carrier communication | |
| CN211086576U (en) | Power consumption tester for portable single-phase electric energy meter | |
| CN113820536A (en) | Zinc oxide arrester live-line detection method based on wireless synchronous current measurement technology | |
| CN210005590U (en) | forward and reverse microwave power measuring circuits | |
| CN203881861U (en) | Multifunctional power grounding parameter tester | |
| CN210835070U (en) | Bus duct impedance measuring device | |
| CN204241578U (en) | Line parameter circuit value insulation, nuclear phase integrated test electricity testing device | |
| CN105890808A (en) | Temperature calibrator for main transformer | |
| CN202471944U (en) | Integrated tester for high voltage metering device |
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 |