Recovery meter calibration and detection device and calibration and detection method used in substation

Abstract

The present invention belongs to the field of verification technology of substation engineering metering system, and in particular, relates to a verification and detection device and verification and detection method for recovery meters applied to substations. The device includes an operation table, a hanging meter unit, a DSP control unit, a function detection unit, a substation recovery meter library, a human-computer interaction unit, a touch display unit and a power supply unit; the function detection unit includes an appearance damage verification and detection unit, a storage function verification and detection unit, a general performance verification and detection unit, a power supply performance verification and detection unit, a metering performance verification and detection unit and a fee control and software verification and detection unit. The device is used to detect the recovery meters, and the recovery meters can be effectively classified according to the type of fault, thereby improving the utilization rate of the recovery meters.

Description

Technical Field

[0001] The invention belongs to the technical field of verification of a transformer substation engineering metering system, and in particular relates to a verification and detection device and a verification and detection method for recovery meters applied to transformer substations. Background Art

[0002] With the expansion and reconstruction of power grids or the deepening of technical transformation projects, the number of dismantled energy meters has also increased, such as fault removal, business expansion removal, substation transformation removal, etc. At present, a large number of energy meters are rarely dismantled and reused, and their utilization rate is low, which is not conducive to the full life management of assets. Therefore, a set of on-site devices is needed to detect, calibrate and re-inspect the recycled energy meters, and then establish a recycled meter library for the purpose of grid reconstruction and expansion, fault emergency, and business expansion registration, and finally realize the effective management of energy meter assets. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a recovery meter calibration detection device and a calibration detection method applied to a substation.

[0004] The present invention is implemented in this way, providing a recovery meter calibration and detection device applied to a substation, comprising an operation console, a hanging meter unit, a DSP control unit, a function detection unit, a substation recovery meter library, a human-computer interaction unit, a touch display unit and a power supply unit;

[0005] The hanging meter unit is used to fix the recovery meter in the detection position and energize it. The DSP control unit is used to transmit the data of the recovery meter collected by the hanging meter unit to the function detection unit for calibration and inspection, and to verify and calculate the data of the calibration and inspection of the function detection unit. Finally, the calibration and inspection results are output to the substation recovery meter library for classified storage. The human-computer interaction unit is used to enable the operator to set and control the calibration and inspection of the recovery meter. The touch display unit is used for visual control and setting of the recovery meter inspection and verification. The power supply unit is used to charge the device for a short time.

[0006] Furthermore, the function verification and detection unit includes an appearance damage verification and detection unit for taking photos of the recycled meter and powering on it to determine whether the recycled meter has an appearance fault, a storage function verification and detection unit for determining whether the recycled meter has a storage function fault, a general performance verification and detection unit for determining whether the recycled meter has a general performance fault, a power supply performance verification and detection unit for determining whether the recycled meter has a power supply performance fault, a metering performance verification and detection unit for determining whether the recycled meter has metering performance, and a fee control and software verification and detection unit for determining whether the recycled meter has fee control and software performance faults.

[0007] Furthermore, the data information of the recycling meters collected by the DSP control unit is sequentially subjected to primary fault detection and secondary fault detection by the appearance damage detection unit, the storage function detection unit, the general performance detection unit, the power supply performance detection unit, the metering performance detection unit, the fee control, and the software detection unit.

[0008] Furthermore, the hanging meter unit is arranged on the operating table, and the hanging meter unit includes a fixed back plate, a hanging buckle is arranged on the fixed back plate, two slide grooves and an electric meter contact assembly are fixed on the lower edge of the fixed back plate, and the electric meter contact assembly includes an electric meter contact fixing bracket, an electric meter contact shaft, an electric meter contact and an electric meter contact shaft wrench, and the electric meter contact is connected to the Dsp control unit.

[0009] Furthermore, it also includes an indicator light unit, which is connected to the Dsp control unit and is used to determine whether the data of the recycling meter communicates normally with the recycling meter calibration and detection device. When the data communication interaction is normal, the light remains on; when the data communication interaction is abnormal, the light flashes rhythmically.

[0010] The present invention also provides a recovery meter calibration and detection method applied to a substation, comprising the following steps:

[0011] 1) Connect the recovery meter to be tested to the meter-hanging unit;

[0012] 2) Take photos of the recovered meter and conduct power-on detection, and transmit the data to the Dsp control unit. The Dsp control unit transmits the data to the appearance damage detection unit to perform a first-level appearance fault detection. If it is determined that the recovered meter has a first-level fault, a second-level appearance fault detection is performed. When the second-level fault detection determines that the recovered meter has a typical appearance fault, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the appearance fault library of the typical fault meter library. When the second-level fault detection determines that the recovered meter does not have a typical appearance fault, the recovered meter is scrapped;

[0013] 3) When it is determined that the recovered meter does not have an appearance fault, the information of the recovered meter is transmitted by the Dsp control unit to the storage function verification and detection unit to perform a first-level storage function fault verification and detection. If it is determined that the recovered meter has a first-level fault, a second-level storage function fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical storage performance fault, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the storage performance fault library of the typical fault table library. When the second-level fault verification and detection determines that the recovered meter does not have a typical storage performance fault, the recovered meter is scrapped;

[0014] 4) When it is determined that the recovered meter does not have a storage function type fault, the information of the recovered meter is transmitted by the DSP control unit to the communication performance verification and detection unit to perform a communication performance first-level fault verification and detection. If it is determined that the recovered meter has a first-level fault, a communication performance second-level fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical communication performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the communication performance fault library of the typical fault table library. When the second-level fault verification and detection determines that the recovered meter does not have a typical communication performance fault, the recovered meter is scrapped;

[0015] 5) When it is determined that the recovered meter does not have a communication performance fault, the information of the recovered meter is transmitted by the DSP control unit to the power performance verification and detection unit to perform a first-level power performance fault verification and detection. If it is determined that the recovered meter has a first-level fault, a second-level power performance fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical power performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the power performance fault library of the typical fault table library. When the second-level fault verification and detection determines that the recovered meter does not have a typical power performance fault, the recovered meter is scrapped;

[0016] 6) When it is determined that the recovered meter does not have a power supply performance fault, the information of the recovered meter is transmitted by the DSP control unit to the metering performance verification and detection unit to perform a metering performance first-level fault verification and detection. If it is determined that the recovered meter has a first-level fault, a metering performance second-level fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical metering performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the metering performance fault library of the typical fault meter library. When the second-level fault verification and detection determines that the recovered meter does not have a typical metering performance fault, the recovered meter is scrapped;

[0017] 7) When it is determined that the recovered meter does not have a metering performance fault, the information of the recovered meter is transmitted by the DSP control unit to the fee control and software verification detection unit to perform fee control and software first-level fault verification detection. If it is determined that the recovered meter has a first-level fault, a fee control and software second-level fault verification detection is performed. When the second-level fault verification detection determines that the recovered meter has a fee control and software typical fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the fee control and software fault library of the typical fault meter library. When the second-level fault verification detection determines that the recovered meter does not have a fee control and software typical fault, the recovered meter is scrapped;

[0018] 8) The recycling meters that do not have fee control and software level 1 faults shall be stored in the fault-free reserve meter database.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1) It can not only effectively classify and divide the meters recovered from substations according to their performance conditions, and establish a reserve meter library for power grid expansion, fault emergency, and business expansion and installation, but also retain the information of the inspection, verification and re-inspection of the recovered meters to establish an information library for the purpose of later reuse and tracing the verification information, realizing the asset life cycle management of the meters recovered from substations in a three-dimensional manner from the physical library of meter materials to the information library;

[0021] 2) After the typical faults found through inspection, calibration and re-inspection of the recovered meters, a fault information table database is established for use in subsequent teaching and training, highlighting its application value and teaching value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural diagram of an operating table of a recovery meter calibration and detection device provided by the present invention;

[0023] Figure 2 A schematic diagram of the connections of the internal components of the recovery meter calibration and detection device provided by the present invention;

[0024] Figure 3 This is a structural diagram of the hanging meter unit in the recovery meter calibration and detection device provided by the present invention.

[0025] Figure 4 This is an overall flow chart of the verification and detection of the recovery meter of the present invention;

[0026] Figure 5 It is a diagram of the internal structure of the metrological performance error board of the metrological performance verification and detection unit in the recovery meter verification and detection device provided by the present invention; DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] refer to Figure 1 , Figure 2 and Figure 3 , which is a recovery meter calibration and detection device for substation provided by the present invention, includes an operating table 1, a hanging meter unit 2, a Dsp control unit 3, a function detection unit 4, a substation recovery meter library 5, a human-computer interaction unit 6, a touch display unit 7 and a power supply unit 8; the operating table 1 is a chair-shaped structure, the hanging meter unit 2 is arranged on the vertical table body of the chair-shaped operating table 1, and an industrial camera 11 is provided in pair with the hanging meter unit 2. In this embodiment, a total of 6 pairs are arranged. In order to facilitate movement, 4 wheels are arranged under the operating table 1.

[0029] The meter hanging unit 2 includes a fixed back plate 21, which enables the meter to be fixed on a plane for operation. A hook 22 is provided on the fixed back plate 21, and the hook 22 is used to fix the meter through the fixed hanging hole of each meter. Two slide grooves 23 and a meter contact assembly are fixed on the lower edge of the fixed back plate 21. The slide groove 23 fixes the base of the meter and fixes meters of various sizes in a manner of adjusting the spacing. The meter contact assembly includes a meter contact fixing bracket 24, a meter contact shaft 25, a meter contact 26 and a meter contact shaft wrench 27. The meter contact 26 is used to contact with the wiring terminal of the meter and realize electrical connection, and is connected to the meter. The data transmission is realized between other modules. The electric meter contact shaft 25, the electric meter contact shaft wrench 27, and the electric meter contact fixing bracket 24 are used to rotate the electric meter contact to fix and energize the electric energy meter. When the electric energy meter is fixed to the meter base through the slide slot 23, and the top and back of the meter are fixed through the hanging buckle 22 and the fixed meter back plate 21, the electric meter contact shaft wrench 27 is pulled out or pushed in or rotated to rotate the electric meter contact 26 to contact the wiring terminal at the bottom of the electric meter, and the electric meter contact rotating wrench 27 is fixed by the electric meter contact fixing bracket 24, so that the electric meter contact rotates and firmly contacts the wiring terminal at the bottom of the electric meter. The electric meter contact 26 is connected to the Dsp control unit 3.

[0030] The hanging meter unit 2 is connected to the Dsp control unit 3, and the Dsp control unit 3 is respectively connected to the substation recovery meter library 5, the human-computer interaction unit 6, the touch display unit 7, the indicator light 9 and the power supply unit 8. The Dsp control unit 3 is also connected to the function detection unit 4, and the function detection unit 4 includes an appearance damage inspection unit 41, a storage function inspection unit 42, a common performance inspection unit 43, a power supply performance inspection unit 44, a metering performance inspection unit 45 and a fee control and software inspection unit 46.

[0031] refer to Figure 4 and Figure 5 The method for verifying and testing the recovery meter of a substation using the device provided by the present invention comprises the following steps:

[0032] 1) Hang six recovery meters to be tested in a group to the hanging meter unit 2;

[0033] 2) Take photos of the recovered meter and conduct power-on detection, and transmit the data to the Dsp control unit. The Dsp control unit transmits the data to the appearance damage detection unit to conduct a first-level appearance fault detection, including appearance damage, button damage, terminal damage, etc. If it is determined that the recovered meter has a first-level fault, a second-level appearance fault detection is performed, that is, a detailed fault of appearance damage is re-checked, such as lead seal damage, terminal cover damage, programming key damage, garbled display, etc. When the second-level fault detection determines that the recovered meter has a typical appearance fault, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the appearance fault library of the typical fault meter library. When the second-level fault detection determines that the recovered meter does not have a typical appearance fault, it is deemed that the meter has no recycling value and the recovered meter is scrapped;

[0034] 3) When it is determined that the recovered meter does not have an appearance fault, the information of the recovered meter is transmitted by the DSP control unit to the storage function verification and detection unit for a first-level storage function fault verification and detection. The serial port or optical interface of the device is used to connect to the recovered meter to read the relevant meter information. If it is determined that the recovered meter has a first-level fault, such as a sudden change in the power data or an active and reactive power combination that exceeds the tolerance, a second-level storage function fault verification and detection is performed. For example, the error board is used to check the current combined active power error (i.e., read the current combined active power of the energy meter and the base degree of each rate, and calculate whether the difference between the power of each rate and the total power is within 0.03 degrees), the current reverse active power combination error (i.e., read the current reverse power of the energy meter). Verify the total active power and the base of each rate, calculate whether the difference between the sum of the electricity of each rate and the total electricity is within 0.03 degrees), daily electricity data mutation (that is, read the frozen electricity of the last 10 days, if the meter code of the next day is less than the meter code of the previous day or the meter code of the next day minus the meter code of the previous day is greater than Umax*Imax*24h, it is determined to be a daily electricity mutation), etc. When the secondary fault detection determines that the recovery meter has a typical storage performance fault, the Dsp control unit transmits the information of the recovery meter to the substation recovery meter library for storage, and stores the recovery meter in the storage performance fault library of the typical fault meter library. When the secondary fault detection determines that the recovery meter does not have a typical storage performance fault, the recovery meter is scrapped;

[0035] 4) When it is determined that the recovered meter does not have a storage function type fault, the information of the recovered meter is transmitted by the Dsp control unit to the communication performance verification and detection unit for a first-level communication performance fault verification and detection, that is, a communication command is sent to the recovered meter through a 485 channel, an optical fiber channel, a carrier channel, or a wireless channel, or the GPRS module is replaced with a standard carrier module for communication, and the electric energy meter response instruction is identified. If the 485 communication fails or the module communication fails, it is regarded as a first-level communication performance fault. If it is determined that the recovered meter has a first-level fault, a second-level communication performance fault verification and detection is performed, that is, the communication module of this platform is used to verify the 485 communication channel, the carrier communication channel, the micro-power wireless communication channel, the GPRS communication channel, etc. When the second-level fault verification and detection determines that the recovered meter has a typical communication performance fault, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the communication performance fault library of the typical fault meter library. When the second-level fault verification and detection determines that the recovered meter does not have a typical communication performance fault, the recovered meter is scrapped;

[0036] 5) When it is determined that the recovered meter does not have a communication performance fault, the information of the recovered meter is transmitted by the Dsp control unit to the power performance verification and detection unit for a first-level power performance fault verification and detection, that is, the first-level power performance fault is determined by checking the control word by means of power-on inspection. If the screen is black or the battery is undervoltage, it is regarded as a first-level power performance fault. If it is determined that the recovered meter has a first-level fault, a second-level power performance fault verification and detection is performed, that is, the black screen, clock battery undervoltage, meter reading battery undervoltage, etc. are checked through the control word status. When the second-level fault verification and detection determines that the recovered meter has a typical power performance fault, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the power performance fault library of the typical fault table library. When the second-level fault verification and detection determines that the recovered meter does not have a typical power performance fault, the recovered meter is scrapped;

[0037] 6) When it is determined that the recovered meter does not have a power performance fault, the information of the recovered meter is transmitted by the DSP control unit to the metering performance verification and detection unit for a first-level metering performance fault verification and detection, and the error board is used to check the meter for faults such as excessive error and inaccurate indication. ( Figure 5In the process, the error board CPU collects standard electric energy pulses, standard clock pulses, tested electric energy pulses, and tested clock pulses, and performs difference comparison on the tested object according to the electric energy pulses and clock pulses of the standard source, and makes conclusions such as whether the error exceeds the limit according to the error regulations. At the same time, the error board is equipped with insulation withstand voltage test function and withstand voltage leakage current sampling function, and can display the results and operations). If the error deviates seriously or the indication deviates seriously, it is regarded as a first-level fault in metering performance. If it is determined that the recovered meter has a first-level fault, a second-level fault calibration test of metering performance is carried out. The error board is used to calibrate and detect the basic current error exceeding the tolerance, the inductive load error exceeding the tolerance, the light load error exceeding the tolerance, the voltage indication inaccurate, the current indication inaccurate, the power indication inaccurate, etc. When the second-level fault calibration test determines that the recovered meter has a typical metering performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the metering performance fault library of the typical fault meter library. When the second-level fault calibration test determines that the recovered meter does not have a typical metering performance fault, the recovered meter is scrapped;

[0038] 7) When it is determined that the recovery meter does not have a metering performance fault, the information of the recovery meter is transmitted by the DSP control unit to the fee control and software verification and detection unit for fee control and software level 1 fault verification and detection. The verification and detection are carried out by powering on, reading, sending remote commands, and comparing numerical values. If the faults such as abnormal electricity fee deduction, authentication failure, abnormal event record, and crash are fee control and software level 1 faults, if it is determined that the recovery meter has a level 1 fault, fee control and software level 2 fault verification and detection are carried out. Specifically, the abnormal rate electricity fee deduction is verified by the data comparison method (that is, after powering on, the current rate and remaining amount of the energy meter are read, and the theoretical increment of the energy value reaches 0.05kW). h,, judge |△amount - △electricity * rate unit price|<0.01), abnormal deduction of step electricity fee (after power-on, read the current rate, step electricity, step electricity price and remaining amount of the electricity meter. When the theoretical increment of the electric energy value exceeds the step electricity, judge |△amount - △electricity * rate unit price - △step electricity * step unit price|<0.01), send remote identity command identification to detect key status error, power-on reset means to identify and detect card screen freeze failure, read the latest 10 power-off records to see if the number of times is too many to determine the power-off time abnormal failure, read the latest 10 reset records to see if the number of times is too many to determine the reset event abnormal failure, reset event abnormality and other failures. When the secondary fault detection determines that the recovered meter has fee control and software typical faults, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the fee control and software fault library of the typical fault meter library. When the secondary fault detection determines that the recovered meter does not have fee control and software typical faults, the recovered meter is scrapped;

[0039] 8) Eventually, the substation meters that have passed the appearance damage inspection, storage function inspection, communication function inspection, power supply performance inspection, metering performance inspection, fee control, software and other performance inspections and are fault-free will be used to form a fault-free reserve meter library for the purpose of grid reconstruction and expansion, fault emergency, and business expansion and registration reserves, ultimately achieving effective management of electricity meter assets.

[0040] The typical fault table library is integrated and classified for teaching and training purposes, and also serves as a basis and case for fault diagnosis.

Claims

1. A recovery meter calibration and detection method applied to a substation, characterized in that: A recovery meter calibration and detection device applied to a substation is used, wherein the recovery meter calibration and detection device applied to a substation includes an operation console, a hanging meter unit, a DSP control unit, a function detection unit, a substation recovery meter library, a human-computer interaction unit, a touch display unit and a power supply unit; The hanging meter unit is used to fix the recovery meter at the detection position and energize it. The DSP control unit is used to transfer the data of the recovery meter collected by the hanging meter unit to the function detection unit for verification and inspection, and to verify and calculate the data of the verification and inspection of the function detection unit, and finally output the verification and inspection results to the substation recovery meter library for classified storage. The human-computer interaction unit is used to realize the setting and control of the recovery meter verification and inspection by the operator. The touch display unit is used for the visual control and setting of the recovery meter inspection and verification. The power supply unit is used to charge the device for a short time. The recovery meter verification and detection method applied to the substation comprises the following steps: 1) Connect the recovery meter to be tested to the meter-hanging unit; 2) Take photos of the recovered meter and conduct power-on inspection, and transmit the data to the Dsp control unit. The Dsp control unit transmits the data to the appearance damage inspection unit to conduct a first-level appearance fault inspection. If it is determined that the recovered meter has a first-level fault, a second-level appearance fault inspection is conducted. When the second-level fault inspection determines that the recovered meter has a typical appearance fault, the Dsp control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the appearance fault library of the typical fault meter library. When the second-level fault inspection determines that the recovered meter does not have a typical appearance fault, the recovered meter is scrapped; 3) When it is determined that the recovered meter does not have an appearance fault, the information of the recovered meter is transmitted by the DSP control unit to the storage function verification and detection unit to perform a first-level storage function fault verification and detection. If it is determined that the recovered meter has a first-level fault, a second-level storage function fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical storage performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the storage performance fault library of the typical fault meter library. When the second-level fault verification and detection determines that the recovered meter does not have a typical storage performance fault, the recovered meter is scrapped; 4) When it is determined that the recovered meter does not have a storage function type fault, the information of the recovered meter is transmitted by the DSP control unit to the communication performance verification and detection unit to perform a communication performance first-level fault verification and detection. If it is determined that the recovered meter has a first-level fault, a communication performance second-level fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical communication performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the communication performance fault library of the typical fault table library. When the second-level fault verification and detection determines that the recovered meter does not have a typical communication performance fault, the recovered meter is scrapped; 5) When it is determined that the recovered meter does not have a communication performance fault, the information of the recovered meter is transmitted by the DSP control unit to the power performance verification and detection unit to perform a first-level power performance fault verification and detection. If it is determined that the recovered meter has a first-level fault, a second-level power performance fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical power performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the power performance fault library of the typical fault table library. When the second-level fault verification and detection determines that the recovered meter does not have a typical power performance fault, the recovered meter is scrapped; 6) When it is determined that the recovered meter does not have a power supply performance fault, the information of the recovered meter is transmitted by the DSP control unit to the metering performance verification and detection unit for a first-level metering performance fault verification and detection. If it is determined that the recovered meter has a first-level fault, a second-level metering performance fault verification and detection is performed. When the second-level fault verification and detection determines that the recovered meter has a typical metering performance fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the metering performance fault library of the typical fault meter library. When the second-level fault verification and detection determines that the recovered meter does not have a typical metering performance fault, the recovered meter is scrapped; 7) When it is determined that the recovered meter does not have a metering performance fault, the information of the recovered meter is transmitted by the DSP control unit to the fee control and software verification and detection unit for fee control and software level 1 fault verification and detection. If it is determined that the recovered meter has a level 1 fault, a fee control and software level 2 fault verification and detection is performed. When the level 2 fault verification and detection determines that the recovered meter has a typical fee control and software fault, the DSP control unit transmits the information of the recovered meter to the substation recovery meter library for storage, and stores the recovered meter in the fee control and software fault library of the typical fault meter library. When the level 2 fault verification and detection determines that the recovered meter does not have a typical fee control and software fault, the recovered meter is scrapped; 8) The recovery meters that do not have fee control or software level 1 faults shall be stored in the fault-free reserve meter database.

2. The recovery meter verification and detection method applied to a substation according to claim 1 is characterized in that: The function verification and detection unit includes an appearance damage verification and detection unit for taking photos of the recycled meter and powering on it to determine whether the recycled meter has an appearance fault, a storage function verification and detection unit for determining whether the recycled meter has a storage function fault, a general performance verification and detection unit for determining whether the recycled meter has a general performance fault, a power supply performance verification and detection unit for determining whether the recycled meter has a power supply performance fault, a metering performance verification and detection unit for determining whether the recycled meter has metering performance, and a fee control and software verification and detection unit for determining whether the recycled meter has a fee control and software performance fault.

3. The recovery meter verification and detection method applied to a substation according to claim 2, characterized in that: The data information of the recycling meter collected by the DSP control unit is sequentially passed through the appearance damage detection unit, storage function detection unit, general performance detection unit, power supply performance detection unit, metering performance detection unit, fee control, and software detection unit for primary fault detection and secondary fault detection.

4. The recovery meter verification and detection method applied to a substation according to claim 1, characterized in that: The hanging meter unit is arranged on the operating table, and the hanging meter unit includes a fixed back plate, a hanging buckle is arranged on the fixed back plate, two slide grooves and an electric meter contact assembly are fixed on the lower edge of the fixed back plate, and the electric meter contact assembly includes an electric meter contact fixing bracket, an electric meter contact shaft, an electric meter contact and an electric meter contact shaft wrench, and the electric meter contact is connected to the Dsp control unit.

5. The recovery meter verification and detection method applied to a substation according to claim 1, characterized in that: It also includes an indicator light unit, which is connected to the Dsp control unit and is used to determine whether the data of the recycling meter communicates normally with the recycling meter verification and detection device.

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