CN207780218U - Detection device for electronic transformer - Google Patents

Abstract

The utility model provides a detection device for electronic transformers, which belongs to the field of electronic transformers and includes an analog quantity acquisition module. The receiving module includes FT3 receiving module, optical Ethernet receiving module, digital quantity acquisition module and Ethernet transmitter. Through the above detection device, the transformer body, the acquisition unit and the merging unit are respectively tested, and the analog voltage signal output by the transformer body, the optical signal output by the acquisition unit and the optical signal output by the merging unit are controlled, and then the electronic The overall process of the electronic transformer is controlled, which improves the timeliness of troubleshooting the electronic transformer and reduces the hidden dangers of the electronic transformer.

Description

Detection device for electronic transformer

technical field

The utility model belongs to the field of electronic transformers, in particular to a detection device for electronic transformers.

Background technique

In recent years, electronic transformers have been widely used in power grids. Electronic transformers generally consist of three parts: transformer body, acquisition unit and merging unit.

Due to the limitations of the existing technology, the current detection device for electronic transformer detection is relatively backward and inefficient, and only the transformer body, acquisition unit and merging unit can be tested separately.

Therefore, there is a problem that it takes too long to find faults in the electronic transformer, which leads to potential safety hazards in the operation of the electronic transformer.

Utility model content

In order to solve the shortcomings and deficiencies in the prior art, the utility model provides a detection device for improving the timeliness of troubleshooting of electronic transformers and reducing hidden troubles of electronic transformers.

In order to achieve the above technical purpose, the utility model provides a detection device for electronic transformers, the detection device includes an analog acquisition module for receiving the analog voltage signal of the transformer body, the output of the analog acquisition module The terminal is connected with a multi-channel digital synchronous receiving module, and the multi-channel digital synchronous receiving module includes an FT3 receiving module for receiving the optical signal output by the acquisition unit, and an optical Ethernet receiving module for receiving the optical signal output by the merging unit , a digital acquisition module for receiving electrical signals output by the FT3 receiving module and the optical Ethernet receiving module and an Ethernet transmitter for communicating with the host computer, the input of the digital acquisition module is connected to the FT3 receiving module and The optical Ethernet receiving module, the output end of the digital quantity acquisition module is connected to the Ethernet transmitter.

Optionally, the digital quantity acquisition module includes an FPGA digital quantity receiving module and a POWER PC processor, and the input end of the FPGA digital quantity receiving module is connected to the analog quantity collecting module, the FT3 receiving module and the optical Ethernet A network receiving module, the general-purpose end of the FPGA digital receiving module is connected to the POWER PC processor, and the output end of the POWER PC processor is connected to the Ethernet transmitter.

Optionally, the analog quantity acquisition module includes an analog quantity input module, a filter module, an analog quantity isolation module and a digital quantity input and output module for connecting the transformer body, and the output end of the analog quantity input module is connected to the filter module, the output end of the filter module is connected to the analog isolation module, the output end of the analog isolation module is connected to the A/D conversion module, and the A/D conversion module is connected to the digital input and output module , the general-purpose end of the digital input and output module is connected to the FPGA digital receiving module.

Optionally, the digital quantity acquisition module is also connected with a clock synchronization module for providing a working reference clock signal.

Optionally, the output end of the clock synchronization module is connected to the FPGA digital quantity receiving module and the POWERPC processor.

Optionally, the clock synchronization module includes a power supply module, a single processor, a constant temperature crystal oscillator module, an electric pulse output module, a second pulse output module and a B code output module, and the output end of the power supply module is connected to the single processor and The constant temperature crystal oscillator module, the output end of the constant temperature crystal oscillator module is connected to the single processor, and the output end of the single processor is connected to the electric pulse output module, the second pulse output module and the B code output module , the output terminals of the electric pulse output module, the second pulse output module and the B code output module are connected to the FPGA digital quantity receiving module, the electric pulse output module, the second pulse output module and the B code output module The output terminal of code output module is connected with described POWER PC processor.

The beneficial effects brought by the technical solution provided by the utility model are: through the detection device used for the electronic transformer, the transformer body, the acquisition unit and the merging unit are respectively tested, and the analog voltage signal output to the transformer body, The optical signal output by the acquisition unit and the optical signal output by the merging unit are controlled, and then the overall process of the electronic transformer is controlled, which improves the accuracy of the electronic transformer and the timeliness of troubleshooting, and reduces the cost of the electronic transformer. Potential failure.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is a kind of structural representation of the detection device for electronic transformer provided by the utility model;

Fig. 2 is another structural schematic diagram of a detection device for an electronic transformer provided by the utility model;

Fig. 3 is a structural schematic diagram of the analog quantity acquisition module provided by the utility model.

Detailed ways

In order to make the structure and advantages of the utility model clearer, the structure of the utility model will be further described below in conjunction with the accompanying drawings.

Embodiment one

The utility model provides a detection device for an electronic transformer. As shown in Figure 1, the detection device includes an analog quantity acquisition module for receiving an analog voltage signal of the transformer body, and the output of the analog quantity acquisition module The terminal is connected with a multi-channel digital synchronous receiving module, and the multi-channel digital synchronous receiving module includes an FT3 receiving module for receiving the optical signal output by the acquisition unit, and an optical Ethernet receiving module for receiving the optical signal output by the merging unit , a digital acquisition module for receiving electrical signals output by the FT3 receiving module and the optical Ethernet receiving module and an Ethernet transmitter for communicating with the host computer, the input of the digital acquisition module is connected to the FT3 receiving module and The optical Ethernet receiving module, the output end of the digital quantity acquisition module is connected to the Ethernet transmitter.

In practice, an electronic transformer generally includes a transformer body, an acquisition unit, and a merging unit. The transformer body transmits the collected analog voltage signal to the acquisition unit, and the acquisition unit converts it into an optical signal and then transmits it to the merging unit. According to the above, the detection device for electronic transformers includes an analog acquisition module and a multi-channel digital synchronous receiving module, wherein the multi-channel digital synchronous receiving module includes an FT3 receiving module, an optical Ethernet receiving module, and a digital acquisition module. module and Ethernet transmitter.

First, respectively connect the transformer body with the input end of the analog quantity acquisition module, the acquisition unit is connected with the input end of the FT3 receiving module, and the merging unit is connected with the optical Ethernet receiving module;

Secondly, the analog quantity acquisition module, FT3 receiving module and optical Ethernet receiving module respectively receive the analog voltage signal output by the transformer body, the optical signal output by the acquisition unit and the optical signal output by the merging unit; among them, the analog quantity acquisition module will receive The analog voltage signal is converted into a digital voltage signal and then transmitted to the multi-channel digital synchronous receiving module. More specifically, the analog acquisition module transmits the digital voltage signal to the digital acquisition module, and the FT3 receiving module converts the received optical signal After the electrical signal is transmitted to the digital acquisition module, the optical Ethernet receiving module converts the received optical signal into an electrical signal and then transmits it to the digital acquisition module. In addition, the digital voltage signal output by the analog acquisition module and the output of the FT3 receiving module The electrical signal and the electrical signal output by the optical Ethernet receiving module are collectively referred to as digital signal;

Then, the digital quantity acquisition module processes the received digital quantity signal, and transmits the processed digital quantity signal to the host computer through the Ethernet transmitter;

Finally, the upper computer analyzes and calculates the received digital signal, calculates the ratio difference and angle difference of the transformer body, the acquisition unit and the merging unit respectively, and judges the transformer according to the comparison of the ratio difference and angle difference Whether there are hidden dangers or failures in the body, acquisition unit and merging unit. If there is a hidden danger or failure in any of the transformer body, acquisition unit and merging unit, it is convenient for maintenance personnel to adjust it in time.

Among them, the FT3 receiving module includes a photoelectric conversion module and a voltage comparator, the input terminal of the photoelectric conversion module is connected to the output terminal of the acquisition unit, the output terminal of the photoelectric conversion module is connected to the input terminal of the voltage comparator, and the output terminal of the voltage comparator is connected to the input terminal of the voltage comparator. The input terminals of the digital quantity acquisition module are connected, and the photoelectric conversion module converts the FT3 optical signal into an electrical signal and outputs it to the voltage comparator, and the voltage comparator outputs high and low levels to the digital quantity acquisition module.

The optical Ethernet receiving module is also called Ethernet optical fiber transceiver, which mainly includes a photoelectric conversion unit. The photoelectric conversion unit uses a photoelectric conversion chip of type RTL8211DN, and the type of Ethernet transmitter is KSZ8041NL.

Based on the above-mentioned detection device, the transformer body, the acquisition unit and the merging unit are tested respectively through the detection device, and then the analog voltage signal output by the transformer body, the optical signal output by the acquisition unit and the optical signal output by the merging unit are controlled. , to realize the control of the overall process of the electronic transformer, improve the timeliness of troubleshooting of the transformer body, the acquisition unit, and the merging unit, and reduce the hidden trouble of the electronic transformer.

Optionally, as shown in Figure 2, the digital quantity acquisition module includes an FPGA digital quantity receiving module and a POWER PC processor, the input end of the FPGA digital quantity receiving module is connected to the analog quantity acquisition module, the FT3 receiving module and the optical Ethernet receiving module, the general-purpose end of the FPGA digital receiving module is connected to the POWER PC processor, and the output end of the POWER PC processor is connected to the Ethernet transmitter.

In implementation, the digital quantity acquisition module includes FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) digital quantity receiving module and POWER PC processor, wherein, FPGA digital quantity receiving module is used for receiving analog quantity collecting module, FT3 receiving The digital signal output by the module and the optical Ethernet receiving module is transmitted to the POWERPC processor, and the POWER PC processor is used to process the digital signal output by the FPGA digital receiving module, and pass the processed digital signal through The Ethernet transmitter transmits to the host computer.

Taking an FPGA-based multi-channel digital quantity acquisition and processing board as an example, it includes an FPGA chip, an FPGA configuration chip, a logic level conversion unit, a VME bus interface unit, and a board-level cache unit. Among them, the FPGA chip is mainly used to implement Serial-parallel, parallel-serial change, rate conversion and other logical processing of input and output signals. The FPGA configuration chip is mainly used to realize the AS (Application Server, application server) configuration mode of the FPGA chip. The digital quantity acquisition and processing board is realized based on the hardware description VHDL language. The program is stored in the FPGA configuration chip. The logic level conversion unit mainly completes the data bus level conversion and driving through the 74VTH16245 integrated circuit. The VME bus interface unit is inside the FPGA chip, and the VME bus data transmission format requirements are realized by writing in VHDL language. The first-level cache unit is used to cache the data generated during the communication between the digital quantity acquisition and processing board and the host computer.

The above-mentioned multi-channel digital quantity acquisition and processing board based on FPGA is similar in function to the FPGA digital quantity receiving module of this embodiment. The internal logic of the FPGA chip is written in VHDL language, which realizes the acquisition of multi-channel digital signals.

The type of FPGA digital quantity receiving module in this embodiment is XC3S1500 series, including 1.5 million system gates, 32 dedicated multipliers, 4 digital clock management modules, rich in logic resources, and fast in operation. The POWER PC processor belongs to the MPC8247 embedded microprocessor, which belongs to the Power QUICC II series, and includes a core based on PowerPCMPC603e and a communication processing core CPM. The dual-core design has powerful processing capabilities and high integration, which reduces the composition overhead of the system, simplifies the design of the circuit board, and reduces power consumption.

Optionally, the analog quantity acquisition module includes an analog quantity input module, a filter module, an analog quantity isolation module and a digital quantity input and output module for connecting the transformer body, and the output end of the analog quantity input module is connected to the filter module, the output end of the filter module is connected to the analog isolation module, the output end of the analog isolation module is connected to the A/D conversion module, and the A/D conversion module is connected to the digital input and output module , the general-purpose end of the digital input and output module is connected to the FPGA digital receiving module.

In the implementation, in order to ensure the accuracy of the analog voltage signal acquisition, as shown in Figure 3, firstly, the analog voltage signal collected by the transformer body is transmitted to the filter module by the analog input module, and the filter module analyzes the analog voltage signal Perform filtering, transmit the filtered analog voltage signal to the analog isolation module, the analog isolation module shields some external interference signals to the analog voltage signal, and then transmit it to the A/D conversion module, the A/D conversion module The analog voltage signal is converted into a digital voltage signal and then transmitted to the digital input and output module, and the digital input and output module transmits it to the FPGA digital receiving module.

Among them, the filter module of this embodiment is composed of resistors, inductors, and capacitors. The type of the analog input module is EMR-AI08, the model of the analog isolation module is DATA-8301, the model of the A/D conversion module is ADS1271, and the digital The model of the input and output module is C2000MD88.

Optionally, the digital quantity acquisition module is also connected with a clock synchronization module for providing a working reference clock signal.

In the implementation, the role of the clock synchronization module is to provide a working reference clock signal and transmit it to the digital quantity acquisition module. When the digital quantity acquisition module receives the digital quantity signal, it accurately records the digital quantity signal according to the synchronization pulse from the clock synchronization module. Arrive at the time, and transmit the digital signal with precise time scale to the host computer through the Ethernet transmitter.

Optionally, the output end of the clock synchronization module is connected to the FPGA digital quantity receiving module and the POWERPC processor.

In the implementation, when the FPGA digital receiving module receives the digital signal, it accurately records the arrival time of the digital signal according to the synchronization pulse from the clock synchronization module, and transmits the digital signal with precise time scale to the POWER PC processor, and the POWER The PC processor will process the digital signal with precise time scale. When the POWER PC processor obtains the processed digital signal, according to the synchronization pulse from the clock synchronization module, it will accurately record the time when the digital signal is completed, and will bring The digital signal with precise time scale is transmitted to the host computer through the Ethernet transmitter.

Optionally, the clock synchronization module includes a power supply module, a single processor, a constant temperature crystal oscillator module, an electric pulse output module, a second pulse output module and a B code output module, and the output end of the power supply module is connected to the single processor and The constant temperature crystal oscillator module, the output end of the constant temperature crystal oscillator module is connected to the single processor, and the output end of the single processor is connected to the electric pulse output module, the second pulse output module and the B code output module , the output terminals of the electric pulse output module, the second pulse output module and the B code output module are connected to the FPGA digital quantity receiving module, the electric pulse output module, the second pulse output module and the B code output module The output terminal of code output module is connected with described POWER PC processor.

In the implementation, the type of the clock synchronization module is UM220, which mainly includes a single processor, a constant temperature crystal oscillator module, a single processor, an electric pulse output module, a second pulse output module and a B code output module. Among them, the single processor is used to complete IEEE1588 , IRIG-B code message reception and processing, and can accurately control the electrical pulse signal, second pulse signal and IRIG-B code pair optical pulse signal output, and the constant temperature crystal oscillator module is used to provide a stable clock frequency for the single processor.

The utility model provides a detection device for an electronic transformer, comprising an analog quantity acquisition module, the output end of the analog quantity acquisition module is connected with a multi-channel digital quantity synchronous receiving module, and the multi-channel digital quantity synchronous receiving module includes an FT3 receiving module, Optical Ethernet receiving module, digital quantity acquisition module and Ethernet transmitter. Through the above-mentioned detection device, the transformer body, the acquisition unit and the merging unit are respectively tested, and the analog voltage signal output by the transformer body, the optical signal output by the acquisition unit and the optical signal output by the merging unit are controlled, and then the electronic The overall process of the electronic transformer is controlled, which improves the timeliness of troubleshooting the electronic transformer and reduces the hidden danger of the electronic transformer.

The serial numbers in the above embodiments are for description only, and do not represent the sequence of the components during assembly or use.

The above is only an embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the utility model. within the scope of protection.

Claims (6)

1. for the detection device of electronic transformer, described detection device comprises the analog quantity acquisition module that is used to receive the analog voltage signal of transformer body, it is characterized in that, the output end of described analog quantity acquisition module is connected with multi-channel A digital quantity synchronous receiving module, the multi-channel digital quantity synchronous receiving module includes an FT3 receiving module for receiving the optical signal output by the acquisition unit, an optical Ethernet receiving module for receiving the optical signal output by the merging unit, and an optical Ethernet receiving module for receiving the FT3 The digital quantity acquisition module of the electrical signal output by the receiving module and the optical Ethernet receiving module and the Ethernet transmitter for communicating with the host computer, the input end of the digital quantity acquisition module is connected to the FT3 receiving module and the optical Ethernet A network receiving module, the output end of the digital quantity acquisition module is connected to the Ethernet transmitter. 2. the detecting device for electronic transformer according to claim 1, is characterized in that, described digital quantity acquisition module comprises FPGA digital quantity receiving module and POWER PC processor, the input of described FPGA digital quantity receiving module Terminal connects described analog quantity acquisition module, described FT3 receiving module and described optical Ethernet receiving module, the common end of described FPGA digital quantity receiving module connects described POWER PC processor, the output end of described POWER PC processor Connect the Ethernet transmitter. 3. The detection device for an electronic transformer according to claim 2, wherein the analog acquisition module includes an analog input module for connecting the transformer body, a filter module, an analog isolation module and A digital input and output module, the output end of the analog input module is connected to the filter module, the output end of the filter module is connected to the analog isolation module, and the output end of the analog isolation module is connected to the A/D converter module, the A/D conversion module is connected to the digital input and output module, and the general-purpose end of the digital input and output module is connected to the FPGA digital receiving module. 4. The detection device for an electronic transformer according to claim 2, wherein the digital quantity acquisition module is further connected with a clock synchronization module for providing a working reference clock signal. 5. The detection device for an electronic transformer according to claim 4, wherein the output end of the clock synchronization module is connected to the FPGA digital quantity receiving module and the POWER PC processor. 6. The detection device for an electronic transformer according to claim 4, wherein the clock synchronization module includes a power supply module, a single processor, a constant temperature crystal oscillator module, an electric pulse output module, a second pulse output module and B code output module, the output end of the power module is connected to the single processor and the constant temperature crystal oscillator module, the output end of the constant temperature crystal oscillator module is connected to the single processor, and the output end of the single processor is connected to the single processor Described electric pulse output module, described second pulse output module and described B code output module, the output end of described electric pulse output module, described second pulse output module and described B code output module connects described FPGA digital quantity receiving module, the output terminals of the electric pulse output module, the second pulse output module and the B code output module are connected to the POWER PC processor.