CN207318702U - Possesses the electric energy meter calibrating apparatus for carrying out fault diagnosis and analysis - Google Patents
Possesses the electric energy meter calibrating apparatus for carrying out fault diagnosis and analysis Download PDFInfo
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Abstract
The utility model discloses a kind of electric energy meter calibrating apparatus for possessing and carrying out fault diagnosis and analysis, mainly including computer, three-phase electric energy meter device stage body and parallel communication unit；Error instrument, standard electric energy meter, standard time clock instrument, three-phase program-controlled signal source, power amplifier module and intelligent fault judgment module are provided with three-phase electric energy meter device stage body；Intelligent fault judgment module includes current open detection unit, temperature monitoring Alarm Unit.Compared with prior art, the utility model electric energy meter calibrating apparatus possesses current loop temperature monitoring, the detection of current loop open circuit, the function of parallel communication module failure positioning, can be with expliciting the position to failure epitope, convenient and practical personnel's rapidly removing faults.The analysis of error, communication packet when before the utility model detection by electric energy meter electric energy error, day timing, can quickly judge the failure of epitope auxiliary terminal, prompt reviewer's timely processing, effectively avoid the generation of flase drop.
Description
Technical Field
The utility model belongs to the technical field of the electric energy meter examination, especially, relate to an electric energy meter calibrating installation who possesses and carry out intelligent fault judgement.
Background
Along with the improvement of the operation quality of a power grid, the functions of the intelligent electric energy meter are more and more, the requirements on the electric energy meter calibrating device are higher and higher, and the items to be calibrated by electric energy meter calibrating personnel tend to be complicated. In the daily verification process, verification personnel can inevitably stop verification due to abnormal conditions, such as 485 communication failure of the electric energy meter, no display of verification errors, incapability of rising of current and the like, some abnormal conditions are caused by the self fault of the verification device, and some abnormal conditions are caused by misoperation, which can cause certain confusion for the operation personnel, however, more time is needed for the feedback to a manufacturer for processing, so that the verification task is delayed. In addition, according to the requirement of an air safety system, some potential safety hazards exist in verification of work risk point identification, corresponding solutions are made, but due to lack of timely and effective reminding and guidance, the potential safety hazards are easily ignored, and operations with electric shock risks, such as live inspection pulse signal wiring, direct wiring adjustment when the device is not closed, and the like, are performed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an electric energy meter calibrating installation who possesses to carry out intelligent failure diagnosis to realize intelligent identification and judge the trouble among the verification process, and give the solution method of troubleshooting and guide and operate the safe suggestion, reach the purpose of quick troubleshooting verification process trouble.
In order to solve the above problem, the utility model adopts the following technical scheme:
the electric energy meter calibrating device for intelligent fault judgment mainly comprises a computer, a three-phase electric energy meter device platform body and a parallel communication unit; the three-phase electric energy meter device platform body is provided with an error meter, a standard electric energy meter, a standard clock instrument, a three-phase program control signal source, a power amplifier module and an intelligent fault judgment module; the fault intelligent judgment module comprises a current open circuit detection unit and a temperature monitoring alarm unit; the error meter, the standard electric energy meter, the standard clock meter and the three-phase program control signal source are connected with the parallel communication unit in an RS485 communication mode, and the parallel communication unit is connected with the computer in an NET network communication mode; the current open circuit detection unit and the temperature monitoring alarm unit are connected with and controlled by the error meter.
The three-phase electric energy meter device body is a three-phase 24-epitope device, and each epitope is provided with an independent voltage interface and an independent current loop.
The current open circuit detection unit is provided with an open circuit detection circuit and a short circuit relay, and the open circuit detection circuit is connected with the three-phase short circuit relay through the three-phase gauge stand.
The temperature monitoring and alarming unit is characterized in that a digital temperature sensor is arranged on a meter seat current loop connecting terminal, and the temperature of the current loop connecting terminal is read for monitoring and alarming through the communication of an error meter and a data line of the sensor.
The parallel communication unit comprises a serial port server and a multi-channel RS232-RS485 conversion module, a carrier reading controller, an infrared reading receiver and an RS232 interface which are connected with the serial port server.
Aiming at the problems existing in the electric energy meter verification, the inventor designs and manufactures an electric energy meter verification device capable of carrying out intelligent fault judgment, and the electric energy meter verification device mainly comprises a computer, a three-phase electric energy meter device platform body and a parallel communication unit; the three-phase electric energy meter device platform body is provided with an error meter, a standard electric energy meter, a standard clock instrument, a three-phase program control signal source, a power amplifier module and an intelligent fault judgment module; the fault intelligent judgment module comprises a current open circuit detection unit and a temperature monitoring alarm unit; the error meter, the standard electric energy meter, the standard clock meter and the three-phase program control signal source are connected with the parallel communication unit in an RS485 communication mode, and the parallel communication unit is connected with the computer in an NET network communication mode; the current open circuit detection unit and the temperature monitoring alarm unit are connected with and controlled by the error meter.
The three-phase program control signal source and the power amplifier module are used for outputting corresponding voltage, current and power factors to the electric energy meter and simulating loads with different properties; the standard electric energy meter and the standard clock instrument are used as standards to respectively provide standard electric energy pulses and standard clock pulses for comparison with the pulses of the electric energy meter to be detected; the error meter is used for receiving the electric energy of the electric energy meter, comparing the clock pulse with the standard pulse and calculating the error; the parallel communication unit is used as a message information exchange communication carrier of each module, can carry out communication in various modes such as RS485, carrier, infrared and RS232, and is matched with a computer and application software to carry out record analysis on a message sent/received in each communication, judge the communication fault of the electric energy meter and complete the communication test of the electric energy meter; the temperature monitoring and alarming unit monitors the real-time temperature of the current binding post of the electric energy meter through the temperature sensor, so that the burning out of the shell of the electric energy meter caused by overheating is avoided; the fault intelligent judgment module detects the current loop of the electric energy meter, and can avoid the failure of the protection of the three-phase program control signal source caused by the current fault of a single electric energy meter.
In the prior art, when the problems of epitope current open circuit and the like occur, the device can not work continuously, cannot be positioned quickly when the open circuit is checked, needs operators to search one by one, and is very time-consuming; and the protection of the electric energy meter also lacks means, and when the auxiliary terminal is not in good contact, the auxiliary terminal is easy to be ignored and detected wrongly. Compared with the prior art, the utility model discloses electric energy meter calibrating installation possesses the function that current loop temperature monitoring, current loop were opened a way and are detected, parallel communication module fault location, can make clear and definite the location to the trouble epitope, makes things convenient for the quick troubleshooting of practical personnel. The utility model discloses through the analysis to electric energy meter electrical energy error, day timing hour error, communication message before the detection, the trouble that can the short-term judgement epitope auxiliary terminal, suggestion inspection personnel in time handle, effectively avoids the emergence of false retrieval.
Drawings
Fig. 1 is the utility model discloses possess the module connection block diagram of the electric energy meter calibrating installation that carries out intelligent fault judgement, in the picture: the device comprises a computer 11, a parallel communication unit 12, a current open-circuit detection unit 13, a temperature monitoring alarm unit 14, an error instrument 15, a standard electric energy meter 16, a standard clock instrument 17, a three-phase program control signal source 18, a power amplifier module 19, a device table body 1A and an electric energy meter 1B.
Fig. 2 is the utility model discloses possess the circuit diagram that the electric current detection element that opens a way, the temperature monitoring alarm unit are reported an emergency and asked for help or increased vigilance to the electric energy meter calibrating installation that carries out intelligent fault judgement, in the picture: 21 error meter, 22 temperature sensor, 23 short circuit relay, 24 gauge stand, 25 open circuit detection circuit.
Fig. 3 is a block diagram of a module connection of a parallel communication unit, in which: the device comprises a serial port server 31, a multi-channel RS232-RS485 conversion module 32, a carrier reading controller 33, an infrared reading device 34, an RS232 interface 35, a computer 36, an electric energy meter 37 and a calibrating device 38.
Detailed Description
A, basic structure
As shown in fig. 1 to 3, the utility model discloses possess the electric energy meter calibrating installation that carries out intelligent fault judgement, mainly include computer, three-phase electric energy meter device platform body and parallel communication unit (parallel communication switch); the three-phase electric energy meter device platform body is provided with an error meter, a standard electric energy meter, a standard clock instrument, a three-phase program control signal source, a power amplifier module and an intelligent fault judgment module; the fault intelligent judgment module comprises a current open circuit detection unit and a temperature monitoring alarm unit; the error meter, the standard electric energy meter, the standard clock meter and the three-phase program control signal source are connected with the parallel communication unit in an RS485 communication mode, and the parallel communication unit is connected with the computer in an NET network communication mode; the current open circuit detection unit and the temperature monitoring alarm unit are connected with and controlled by the error meter. Wherein,
the three-phase electric energy meter device body is a three-phase 24-epitope device, and each epitope is provided with an independent voltage interface and an independent current loop.
The current open circuit detection unit is provided with an open circuit detection circuit and a short circuit relay, and the open circuit detection circuit is connected with the three-phase short circuit relay through the three-phase gauge stand.
The temperature monitoring and alarming unit is characterized in that a digital temperature sensor is arranged on a meter seat current loop connecting terminal, and the temperature of the current loop connecting terminal is read for monitoring and alarming through the communication of an error meter and a data line of the sensor.
The parallel communication unit comprises a serial port server and a multi-channel RS232-RS485 conversion module (device), a carrier reading controller, an infrared reading receiver and an RS232 interface which are connected with the serial port server.
Second, function action
The computer carries out 485, carrier wave and infrared communication with other parts of the device and the electric energy meter to be detected through the parallel communication unit (whether each communication port of the electric energy meter is normal can be judged through analyzing communication frames), controls the three-phase program control signal source and the power amplification module to output set voltage, current and power factors, controls the error meter to carry out various verification and fault judgment, and is matched with computer software to carry out transmission/reception message record analysis of each communication, thereby carrying out intelligent fault analysis and prompt.
The three-phase electric energy meter device platform body is used for placing an electric energy meter and providing a voltage current loop and various signal leads of the electric energy meter.
The control signal input and result signal output of the open circuit detection circuit are connected to the I/O port of the error meter, so that the error meter can control the start and stop of detection and can also obtain the detection result, and the detection result is also transmitted to the error meter through a logic signal. The I/O port of the error meter also controls a short-circuit relay, when an open circuit is detected, the error meter automatically controls the short-circuit of the bypass relay, the short-circuit relay can carry out short circuit on a current loop of an abnormal epitope, and the device can also work normally even if the open-circuit electric energy meter exists. Therefore, the current open circuit detection unit can detect the epitope current open circuit, detect whether the current loop of the electric energy meter is open or not, and automatically short-circuit the current loop of the abnormal epitope, so that the phenomenon that the current open circuit of the whole device is caused to cause incapability of working due to the open circuit of a single epitope is avoided.
The temperature sensor is used for measuring the real-time temperature of the current terminal, and the temperature sensor is connected to the error meter through a circuit and can transmit the temperature to the error meter. During detection, the detected electric energy meter is arranged on the meter base, and the temperature of the meter base terminal is very close to the temperature of the electric energy meter terminal through the conduction of the copper metal terminal.
The temperature monitoring value of the temperature monitoring alarm unit can be set according to the actual condition, and when the actual temperature exceeds the set value, the bypass relay on the epitope can be controlled to carry out short circuit on the epitope current loop, shunt the current in the flow meter, and avoid the temperature from continuously rising.
The parallel communication unit has multiple communication modes such as RS232, RS485, carrier wave and the like, can perform communication control on all parts of the device, realizes multi-meter-position 485 parallel communication on the electric energy meter, finally transmits a communication message of the parallel communication unit to the computer, and judges the fault of a communication loop of the electric energy meter and the fault caused by abnormal operation of the electric energy meter in the verification process by matching with the record analysis of the communication sending/receiving message of each time by the computer.
The standard electric energy meter has the function of measuring the actual output value of the device, and the computer reads the measured value of the standard electric energy meter and compares the measured value with the set voltage, current and power factor so as to judge the faults of voltage protection, current protection, voltage abnormity, current abnormity, angle abnormity and the like of the device and make reasonable indication.
The error meter collects the electric energy pulse of the detected electric energy meter and the standard electric energy meter to calculate the electric energy error, and collects the clock pulse of the detected electric energy meter and the standard clock meter to calculate the daily timing error. Before each item test begins, the computer controls the error meter to measure the electric energy error and the daily timing error rapidly by taking 1 pulse of the tested meter as an interval, and whether the auxiliary terminal of the electric energy meter is effectively connected or not can be effectively judged according to the test result read from the error meter. And judging and prompting according to the error value aiming at the condition that some voltage wires are missed to be clamped or mistakenly clamped.
Third, using method
Before all tests, the computer sends the set temperature limit value to the error meter through a communication instruction, the error meter continuously reads the real-time temperature of the epitope current terminal from the temperature sensor in the test process, and once the temperature exceeds the set value, the error meter controls the short-circuit relay to be in short circuit, so that the current flowing through the electric meter is reduced, and the electric energy meter is prevented from being damaged due to continuous temperature rise.
When the current open circuit detection is carried out, the computer sends an instruction to the error meter to start the test, the error meter controls the open circuit detection circuit to carry out the detection, the detection result is fed back to the error meter, and the computer can read the detection result from the error meter and indicate an abnormal epitope according to the result.
To sum up, the utility model discloses can require the error verification work of developing according to the national examination regulation, still have the ability of monitoring warning, common trouble intelligence location to the current loop temperature among the verification process, improve the quality and the efficiency of electric energy meter examination, practice thrift man-hour, improve the security of examination personnel.
Claims (5)
1. An electric energy meter calibrating device capable of carrying out intelligent fault judgment is characterized by mainly comprising a computer, a three-phase electric energy meter device platform body and a parallel communication unit; the three-phase electric energy meter platform is provided with an error meter, a standard electric energy meter, a standard clock instrument, a three-phase program control signal source, a power amplifier module and an intelligent fault judgment module; the intelligent fault judgment module comprises a current open-circuit detection unit and a temperature monitoring alarm unit; the error meter, the standard electric energy meter, the standard clock meter and the three-phase program control signal source are connected with the parallel communication unit in an RS485 communication mode, and the parallel communication unit is connected with the computer in an NET network communication mode; the current open circuit detection unit and the temperature monitoring alarm unit are connected with and controlled by the error meter.
2. The electric energy meter calibration device with intelligent fault judgment according to claim 1, characterized in that: the three-phase electric energy meter device platform body is a three-phase 24-epitope device, and each epitope is provided with an independent voltage interface and an independent current loop.
3. The electric energy meter calibration device with intelligent fault judgment according to claim 1, characterized in that: the current open circuit detection unit is provided with an open circuit detection circuit and a short circuit relay, and the open circuit detection circuit is connected with the three-phase short circuit relay through the three-phase gauge stand.
4. The electric energy meter calibration device with intelligent fault judgment according to claim 1, characterized in that: the temperature monitoring and alarming unit is characterized in that a digital temperature sensor is arranged on a meter seat current loop connecting terminal, and the temperature of the current loop connecting terminal is read for monitoring and alarming through the communication of an error meter and a data line of the sensor.
5. The electric energy meter calibration device with intelligent fault judgment according to claim 1, characterized in that: the parallel communication unit comprises a serial port server and a multi-channel RS232-RS485 conversion module, a carrier reading controller, an infrared reading receiver and an RS232 interface which are connected with the serial port server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721501439.8U CN207318702U (en) | 2017-11-13 | 2017-11-13 | Possesses the electric energy meter calibrating apparatus for carrying out fault diagnosis and analysis |
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| CN201721501439.8U CN207318702U (en) | 2017-11-13 | 2017-11-13 | Possesses the electric energy meter calibrating apparatus for carrying out fault diagnosis and analysis |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957385A (en) * | 2018-08-15 | 2018-12-07 | 广东电网有限责任公司 | A kind of electric energy measuring equipment automatic calibration line exception epitope confirmation method and device |
| CN112414568A (en) * | 2020-11-03 | 2021-02-26 | 国网山东省电力公司电力科学研究院 | Temperature rise monitoring system and monitoring method for electric energy meter calibrating device |
| CN112816934A (en) * | 2021-03-01 | 2021-05-18 | 云南电网有限责任公司电力科学研究院 | Method and system for judging error self-monitoring accuracy and timeliness of electric energy meter |
| CN114859283A (en) * | 2022-05-09 | 2022-08-05 | 国网山东省电力公司营销服务中心(计量中心) | System and method for testing full performance of measuring unit |
-
2017
- 2017-11-13 CN CN201721501439.8U patent/CN207318702U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957385A (en) * | 2018-08-15 | 2018-12-07 | 广东电网有限责任公司 | A kind of electric energy measuring equipment automatic calibration line exception epitope confirmation method and device |
| CN108957385B (en) * | 2018-08-15 | 2020-07-03 | 广东电网有限责任公司 | Method and device for confirming abnormal epitope of automatic verification line of electric energy metering equipment |
| CN112414568A (en) * | 2020-11-03 | 2021-02-26 | 国网山东省电力公司电力科学研究院 | Temperature rise monitoring system and monitoring method for electric energy meter calibrating device |
| CN112816934A (en) * | 2021-03-01 | 2021-05-18 | 云南电网有限责任公司电力科学研究院 | Method and system for judging error self-monitoring accuracy and timeliness of electric energy meter |
| CN114859283A (en) * | 2022-05-09 | 2022-08-05 | 国网山东省电力公司营销服务中心(计量中心) | System and method for testing full performance of measuring unit |
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