CN107219487A - A kind of table source integrates formula electrical devices verification platform - Google Patents

Abstract

The present invention relates to the field of electrical technology, and more specifically relates to a calibration platform for electrical equipment integrated with meter and source; a calibration platform for electrical equipment with integrated meter and source, the platform includes a computer 1, a computer display screen 2, Controller 3, DC standard source 4, AC standard source 5, three-phase multi-function meter 6, table body wiring bar 8 and table body 7; beneficial effects of the present invention: cooperate with automatic test software, wide measurement range; instrument calibration , transmitter calibration, and electric energy meter calibration three sets of calibration software, the calibration process is highly automated, the instrument calibration is semi-automatic, and the transmitter calibration is fully automatic; the operation is simple and convenient; Computer work uses a special keyboard to operate the power source; the standard source output is fast, accurate and stable.

Description

An integrated electrical equipment calibration platform with integrated meter and source

technical field

The present invention relates to the field of electrical technology, and more specifically relates to a meter-source integrated electrical equipment verification platform.

Background technique

According to relevant national laws and regulations, the equipment used in the power industry must be calibrated in accordance with national regulations before it can be put into use. The electrical equipment here is mainly divided into two categories. The first category refers to source equipment, mainly including AC voltage sources, AC current source, DC voltage source, DC current source, etc.; the second category refers to meter equipment, mainly including AC voltmeter, AC ammeter, DC voltmeter, DC ammeter, power meter, and resistance meter.

At present, measurement technical institutions at all levels have carried out calibration of electrical equipment, and each type of specific meter or source has a calibration device. In order to achieve full coverage of calibration items, measurement technical institutions often need to purchase many calibration devices. The problem caused by the device is: first, the increase in the number of equipment brings about an increase in maintenance costs; second, when calibrating the compound type of equipment to be calibrated, it is necessary to use multiple calibration devices, which makes wiring difficult and easy to make mistakes; Third, the automation level of the calibration process is low, the work efficiency is low, and manpower and material resources are wasted; fourth, multiple calibration devices are likely to produce a small range of technical parameters, and it is impossible to fully calibrate the equipment to be calibrated.

At present, in the industry, the corresponding multi-function meter inspection generally adopts two schemes: manual and automatic. Manual inspection, using manual inspection with signal source and detection equipment, this method requires a lot of manpower and time, each meter must be manually wired, the steps are cumbersome, and the inspection accuracy is low, the reliability is poor, and the efficiency and production capacity are low. ; for automatic inspection, the electronic control scheme is used for inspection. Although the degree of automation is improved, the source of the inspection device is separated from the standard table, that is, the source is a separate device, and the output value of the source needs to be adjusted first, and then Compared with the instrument that needs to be tested, the automation level of the calibration process is low, the work efficiency is low, and manpower and material resources are wasted.

Contents of the invention

The purpose of the present invention is to solve the above specific problems, in order to overcome the defects of the prior art, thereby providing a kind of integrated electrical equipment calibration with simple operation, convenient use, which can save manpower and improve detection accuracy. test platform.

The technical solution adopted by the present invention to solve the technical problem is to construct a meter-source integrated electrical equipment verification platform, which includes a computer 1, a computer display screen 2, a platform controller 3, a DC standard source 4, AC standard source 5, three-phase multi-function meter 6, table body wiring bar 8 and table body 7; computer 1 is connected to computer display screen 2, computer display screen 2 receives and displays information from computer 1, and the output terminal of computer 1 is connected to The input terminal of the platform controller 3, the computer 1 sets a value to send a signal to the platform controller 3, and the output terminal of the platform controller 3 is respectively connected to the DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6. At the input end, the table body controller 3 sends a signal to the DC standard source 4 or the AC standard source 5 to control the current and voltage output by the DC standard source 4 or the AC standard source 5, and the output end of the DC standard source 4 is connected to the terminal block 8 of the table body Input terminal, output signal to the terminal block 8 of the platform, the terminal terminal 8 of the platform transmits the signal of the DC standard source 4 to the three-phase multi-function meter 6, and the three-phase multi-function meter 6 judges the DC by verifying the collected signal Whether the signal output by the standard source 4 is consistent with the set value, and transmit the verification result to the computer 1, and the computer 1 judges whether to continue sending signals to the DC standard source 4 by analyzing the information fed back by the three-phase multi-function meter 6 until The output value of the DC standard source 4 is consistent with the information sent by the computer 1, the output terminal of the instrument to be checked is connected to the input terminal of the terminal block 8, and the instrument is calibrated, and the output terminal of the AC standard source 5 is connected to the terminal block 8 of the platform body The input terminal of the AC standard source 5 outputs the signal to the terminal block 8, and the terminal block 8 transmits the signal of the AC standard source 5 to the three-phase multi-function meter 6, and the three-phase multi-function meter 6 carries out the collected signal Calibration, judging whether the signal output by the AC standard source 5 is consistent with the set value, and transmitting the verification result to the computer 1, the computer 1 judges whether to continue sending signals to the AC by analyzing the information fed back by the three-phase multi-function meter 6 Standard source 5, until the value of the output of AC standard source 5 is consistent with the information sent by computer 1, the output terminal of platform body terminal block 8 is connected to the input terminal of three-phase multi-function meter 6, and platform body terminal block 8 transmits the signal to be measured to The three-phase multi-function meter 6, the output end of the three-phase multi-function meter 6 is connected to the input end of the computer 1, the AC standard source 5 is three, the computer 1, the computer display screen 2, the platform controller 3, the DC standard source 4, Three AC standard sources 5, a three-phase multi-function meter 6, the terminal block 8 and the platform 7 are integrated into a verification platform, so that the verification work can be carried out conveniently and concisely.

The computer display screen 2, the platform controller 3, the DC standard source 4, the three-phase multi-function meter 6 and the platform wiring bar 8 are placed on the platform 7, and the computer 1 and the AC standard source 5 are placed under the platform 7. Check the platform.

Computer 1 is equipped with automatic test software, which is a three-phase AC and DC instrument inspection system.

The DC standard source 4 and the AC standard source 5 are integrated with the three-phase multi-function meter 6. The DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 are connected to the computer 1, and the computer 1 sends out a fixed value The signal is sent to the DC standard source 4 or the AC standard source 5, and the DC standard source 4 or the AC standard source 5 outputs the corresponding voltage and current value according to the signal of the computer 1, and the three-phase multi-function meter 6 is connected to the DC standard source 4 or the AC standard source 5 The output information is verified, and the information is fed back to the computer 1, and the computer 1 automatically adjusts the DC standard source 4 or the AC standard source 5 through the information fed back by the three-phase multi-function meter 6 until the DC standard source 4 or the AC standard source 5 The output voltage and current value reach the predetermined value of the computer 1, and the DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 are connected with the computer 1 to form a source equipment verification platform.

The DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 can be automatically monitored and calibrated by the computer 1, and can be operated without the computer 1 by using a special keyboard.

The AC standard source 5 adopts DDS digital waveform synthesis, and the voltage, current, phase and power adopt optional digital closed-loop technology.

The platform controller 3, the DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 are all equipped with software for automatic adjustment and calibration.

The platform controller 3 and the platform terminal block 8 are integrated as a three-phase AC and DC meter verification device.

The three-phase multi-function meter 6 is a CL311V2 three-phase multi-function standard meter, and the DC standard source 4 is a CL6019 program-controlled DC power source.

The three-phase AC-DC meter verification device is CL3601B three-phase AC-DC meter verification device.

The function of the three-phase multi-function meter 6 is to check the DC standard source 4, the AC standard source 5 and the instrument; the three AC standard sources 5 are integrated with the three-phase AC standard source 5, and the frequency, frequency, and output of the AC standard source 5 can be modified simultaneously. phase, amplitude and harmonics, so as to realize the verification of AC meter equipment; the DC standard source 4 is to realize the verification of DC meter equipment; the function of the platform controller 3 is to coordinate the three-phase multi-function meter 6, The three AC standard sources 5 and DC standard sources 4 work, collect, output and measure signals, and transmit the signals to the test software of the computer 1, and at the same time realize functions such as overcurrent protection, overload protection, short circuit protection, and short circuit protection; computer 1 And automated testing software, forming an intuitive image, easy to understand, simple and convenient man-machine communication interface, and automatically completes data processing, including recording data, calculating errors, issuing reports, etc.

The present invention has three sets of calibration software for instrument calibration, transmitter calibration, and electric energy meter calibration. The calibration process is highly automated, the instrument calibration is semi-automatic, and the transmitter calibration is fully automatic. Computer 1 can be used to work. Can break away from computer 1 work again and adopt special-purpose keyboard to operate.

The meter-source integrated electrical equipment calibration platform of the present invention has the following beneficial effects:

(1) Cooperating with automatic test software, it can calibrate commonly used electrical measuring indicating instruments, power frequency digital instruments, electrical measuring transmitters and DC standard voltage and current sources, with a wide measuring range.

(2) There are three sets of calibration software for instrument calibration, transmitter calibration, and electric energy meter calibration. The calibration process is highly automated, semi-automatic for instrument calibration, and fully automatic for transmitter calibration. The operation interface is intuitive and easy to use. Easy to understand and easy to operate.

(3) It can not only work with a computer, but also work without a computer and use a special keyboard to operate.

(4) The AC standard source adopts DDS digital waveform synthesis, and the voltage, current, phase, and power adopt optional digital closed-loop technology, so that the standard source output is fast, accurate and stable.

(5) The controller of the table body, the DC standard source, the three AC standard sources and the three-phase multi-function meter are all equipped with software for automatic adjustment and calibration, which is convenient, fast, stable and reliable, and overcomes the disadvantages of out-of-the-box hardware calibration.

(6) When calibrating the instrument, the appropriate implementation standard can be selected according to the needs or the actual situation of the meter being inspected, and the verification conclusion meets the actual requirements.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a meter-source integrated electrical equipment calibration platform of the present invention;

Fig. 2 is a working flow chart of a meter-source integrated electrical equipment verification platform of the present invention;

In the figure: 1 is the computer, 2 is the computer display screen, 3 is the controller of the platform, 4 is the DC standard source, 5 is the AC standard source, 6 is the three-phase multi-function meter, 7 is the platform, 8 is the wiring of the platform Row.

detailed description

Example 1

A calibration platform for electrical equipment integrated with meters and sources, the platform includes a computer 1, a computer display screen 2, a platform controller 3, a DC standard source 4, an AC standard source 5, a three-phase multi-function meter 6, and platform wiring row 8 and table body 7; computer 1 is connected with computer display screen 2, and computer display screen 2 receives and displays the information of computer 1, and the output end of computer 1 is connected with the input end of table body controller 3, and computer 1 sets a value Send a signal to the platform controller 3, the output terminal of the platform controller 3 is respectively connected to the input terminal of the DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6, and the platform controller 3 sends a signal to the DC standard source 4 Or the AC standard source 5, control the current and voltage output by the DC standard source 4 or the AC standard source 5, the output end of the DC standard source 4 is connected to the input terminal of the terminal block 8 of the platform body, and the output signal is sent to the terminal block 8 of the platform body, and the terminal body wiring The row 8 transmits the signal of the DC standard source 4 to the three-phase multi-function meter 6, and the three-phase multi-function meter 6 checks the collected signal to determine whether the signal output by the DC standard source 4 is consistent with the set value, and The result of the verification is transmitted to the computer 1, and the computer 1 judges whether to continue to send a signal to the DC standard source 4 by analyzing the information fed back by the three-phase multi-function meter 6, until the value output by the DC standard source 4 is consistent with the information sent by the computer 1, Connect the output end of the instrument to be inspected to the input end of the table body terminal block 8 to calibrate the instrument, the output end of the AC standard source 5 is connected to the input end of the table body terminal block 8, and the output signal of the AC standard source 5 is sent to the table body terminal block 8. The terminal block 8 of the table body transmits the signal of the AC standard source 5 to the three-phase multi-function meter 6, and the three-phase multi-function meter 6 checks the collected signal to judge the output signal and the set value of the AC standard source 5 Whether it is consistent, and transmit the verification result to the computer 1, the computer 1 judges whether to continue to send a signal to the AC standard source 5 by analyzing the information fed back by the three-phase multi-function meter 6, until the value output by the AC standard source 5 is consistent with that of the computer 1 The information sent is consistent, the output end of the terminal block 8 of the table body is connected to the input end of the three-phase multi-function meter 6, and the terminal block 8 of the table body transmits the signal to be measured to the three-phase multi-function meter 6, and the output of the three-phase multi-function meter 6 The terminal is connected to the input terminal of computer 1, and there are three AC standard sources 5, computer 1, computer display screen 2, platform controller 3, DC standard source 4, three AC standard sources 5, three-phase multi-function meter 6, and Taiwan The body terminal block 8 and the platform body 7 are integrated into a verification platform, so that the verification work can be carried out conveniently and concisely.

The computer display screen 2, the platform controller 3, the DC standard source 4, the three-phase multi-function meter 6 and the platform wiring bar 8 are placed on the platform 7, and the computer 1 and the AC standard source 5 are placed under the platform 7. Check the platform.

Computer 1 is equipped with automatic test software, which is a three-phase AC and DC instrument inspection system.

The DC standard source 4 and the AC standard source 5 are integrated with the three-phase multi-function meter 6. The DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 are connected to the computer 1, and the computer 1 sends out a fixed value The signal is sent to the DC standard source 4 or the AC standard source 5, and the DC standard source 4 or the AC standard source 5 outputs the corresponding voltage and current value according to the signal of the computer 1, and the three-phase multi-function meter 6 is connected to the DC standard source 4 or the AC standard source 5 The output information is verified, and the information is fed back to the computer 1, and the computer 1 automatically adjusts the DC standard source 4 or the AC standard source 5 through the information fed back by the three-phase multi-function meter 6 until the DC standard source 4 or the AC standard source 5 The output voltage and current value reach the predetermined value of the computer 1, and the DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 are connected with the computer 1 to form a source equipment verification platform.

The DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 can be automatically monitored and calibrated by the computer 1, and can be operated without the computer 1 by using a special keyboard.

The AC standard source 5 adopts DDS digital waveform synthesis, and the voltage, current, phase and power adopt optional digital closed-loop technology.

The platform controller 3, the DC standard source 4, the AC standard source 5 and the three-phase multi-function meter 6 are all equipped with software for automatic adjustment and calibration.

The platform controller 3 and the platform terminal block 8 are integrated as a three-phase AC and DC meter verification device.

The three-phase multi-function meter 6 is a CL311V2 three-phase multi-function standard meter, and the DC standard source 4 is a CL6019 program-controlled DC power source.

The three-phase AC-DC meter verification device is CL3601B three-phase AC-DC meter verification device.

The function of the three-phase multi-function meter 6 is to check the DC standard source 4, the AC standard source 5 and the instrument; the three AC standard sources 5 are integrated with the three-phase AC standard source 5, and the frequency, frequency, and output of the AC standard source 5 can be modified simultaneously. phase, amplitude and harmonics, so as to realize the verification of AC meter equipment; the DC standard source 4 is to realize the verification of DC meter equipment; the function of the platform controller 3 is to coordinate the three-phase multi-function meter 6, The three AC standard sources 5 and DC standard sources 4 work, collect, output and measure signals, and transmit the signals to the test software of the computer 1, and at the same time realize functions such as overcurrent protection, overload protection, short circuit protection, and short circuit protection; computer 1 And automated testing software, forming an intuitive image, easy to understand, simple and convenient man-machine communication interface, and automatically completes data processing, including recording data, calculating errors, issuing reports, etc.

Example 2

Calibrate the meter with a meter-source integrated electrical equipment verification platform in Example 1

Step 1: Connect the output terminal of the instrument to be calibrated with the input terminal of the terminal block 8;

Step 2: Select a number of check points according to the regulations and the items to be checked, and set 100V on the control software of the computer 1;

Step 3: The computer 1 transmits the control signal to the platform controller 3, and the platform controller 3 controls the output of the DC standard source 4, and outputs a set value of 100V;

Step 4: Record the reading of the meter to be calibrated;

Step 5: Carry out the verification of the next point, adopt the automatic verification program of the computer 1, and the platform controller 3 will control the DC standard source 4 to automatically output the next value for meter verification.

Example 3

Calibrate the meter with a meter-source integrated electrical equipment verification platform in Example 1

Step 1: Connect the output terminal of the instrument to be calibrated with the input terminal of the terminal block 8;

Step 2: Select a number of checkpoints according to the regulations, and set 200V on the computer 1 control software;

Step 3: The computer 1 transmits the control signal to the platform controller 3, and the platform controller 3 controls the output of the AC standard source 5, and outputs a set value of 200V;

Step 4: Record the reading of the meter being calibrated;

Step 5: Carry out the verification of the next point, adopt the automatic verification program of the computer 1, and the platform controller 3 will control the AC standard source 5 to automatically output the next value for instrument verification.

Example 4

Calibrate the meter with a meter-source integrated electrical equipment verification platform in Example 1

Step 1: Connect the output terminal of the instrument to be calibrated with the input terminal of the terminal block 8;

Step 2: Select a number of checkpoints according to the regulations, and set 200V on the computer 1 control software;

Step 3: The computer 1 transmits the control signal to the platform controller 3, and the platform controller 3 controls the output of the DC standard source 4, and outputs the set value of 200V;

Step 4: Record the reading of the meter to be calibrated;

Step 5: Carry out the verification of the next point, adopt manual verification, and manually input the next verification value on the computer 1 for instrument verification.

Example 5

Verification of the source with a meter-source integrated electrical equipment verification platform in Example 1

Step 1: Connect the verified AC standard source 5 to the terminal block 8;

Step 2: According to the regulations, select a number of calibration points, enter the measurement interface on the control software of the computer 1, and enter the calibration point 150V to be measured;

Step 3: Let the verified source output the corresponding 150V, and the three-phase multi-function meter 6 will display the verified output value;

Step 4: Record the verified output value of 150V and the display value of the three-phase multi-function meter 6;

Step 5: Carry out the verification of the next point, adopt the automatic verification program of the computer 1, and the platform controller 3 will control the AC standard source 5 to automatically output the next value for instrument verification.

Example 6

Verification of the source with a meter-source integrated electrical equipment verification platform in Example 1

Step 1: Connect the verified DC standard source 4 to the terminal block 8 of the platform;

Step 2: According to the regulations, select a number of calibration points, enter the measurement interface on the control software of the computer 1, and enter the calibration point 100V to be measured;

Step 3: Let the verified source output the corresponding 100V, and the three-phase multi-function meter 6 will display the verified output value;

Step 4: Record the verified output value 100V and the display value of the three-phase multi-function meter 6;

Step 5: The calibration of the next point adopts manual calibration, and manually enters the next calibration value on the computer 1 for instrument calibration.

Claims (9)

1. a kind of table source integrates formula electrical devices verification platform, it is characterised in that：The platform includes computer (1), calculated Machine display screen (2), stage body controller (3), standard dc source (4), exchange standard source (5), three-phase multi-functional table (6), stage body connect Line arranges (8) and stage body (7)；

Computer (1) is connected with computer display (2), and computer display (2) receives the information of computer (1) and shown Show；

The input of the output end connection stage body controller (3) of computer (1), computer (1) sets a value and issued a signal to Stage body controller (3)；

Stage body controller (3) output end connects standard dc source (4), exchange standard source (5) and three-phase multi-functional table (6) respectively Input, stage body controller (3) is signaled to standard dc source (4) or exchange standard source (5), control standard dc source (4) Or electric current, the voltage of exchange standard source (5) output；

The input of standard dc source (4) output end connection stage body line bank (8), outputs signals to stage body line bank (8)；

The signal of standard dc source (4) or exchange standard source (5) is transferred to three-phase multi-functional table (6), three by stage body line bank (8) Phase multifunctional meter (6) is to signal checking, and judge the signal of standard dc source (4) or exchange standard source (5) output is with setting value It is no consistent, and the result of verification is transferred to computer (1)；

The input of the output end connection stage body line bank (8) for the instrument examined is needed, standard source (5) output end connected unit is exchanged The input of body line bank (8), exchange standard source (5) outputs signals to stage body line bank (8), stage body line bank (8) output end Connect the input of three-phase multi-functional table (6), the input of the output end connection computer (1) of three-phase multi-functional table (6)；

Computer (1), computer display (2), stage body controller (3), standard dc source (4), exchange standard source (5), three-phase Multifunctional meter (6), stage body line bank (8) and stage body (7) are integrated into verification platform.

2. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described Computer is provided with automatic test software in (1), and the software is three-phase alternating current-direct current instrument verification system.

3. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described Standard dc source (4) becomes one with standard source (5) same to three-phase multi-functional table (6) is exchanged, standard dc source (4), exchange mark Quasi- source (5) is connected with three-phase multi-functional table (6) same to computer (1), composition source kind equipment verification platform；Computer (1) sends one Individual set value signal is to standard dc source (4) or exchange standard source (5), and standard dc source (4) or exchange standard source (5) are according to calculating The corresponding voltage of signal output, the current value of machine (1), three-phase multi-functional table (6) is to standard dc source (4) or exchange standard source (5) information of output is verified, and feeds back information to computer (1), and computer (1) is anti-by three-phase multi-functional table (6) The information of feedback is automatically adjusted to standard dc source (4) or exchange standard source (5), until standard dc source (4) or exchange standard source (5) voltage of output, current value reach the predetermined value of computer.

4. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described Computer (1) monitoring calibration automatically had both can be used in standard dc source (4), exchange standard source (5) and three-phase multi-functional table (6), again Computer (1) work can be departed to be operated using keyboard.

5. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described Standard source (5) is exchanged using the synthesis of DDS digital waveforms, voltage, electric current, phase, power are using optionally digital closed loop skill Art.

6. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described It is designed with automatically adjusting inside stage body controller (3), standard dc source (4), exchange standard source (5) and three-phase multi-functional table (6) The software of calibration.

7. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described Stage body controller (3) and stage body line bank (8) become one, and are used as three-phase alternating current-direct current instrument calibration device.

8. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Described It is three to exchange standard source (5).

9. a kind of table source according to claim 1 integrates formula electrical devices verification platform, it is characterised in that：Computer Display screen (2), stage body controller (3), standard dc source (4), three-phase multi-functional table (6) and stage body line bank (8) are placed in platform On body (7), computer (1) is placed in composition verification platform below stage body (7) with standard source (5) is exchanged.