CN213957508U - Automatic detection system of relay protection tester - Google Patents
Automatic detection system of relay protection tester Download PDFInfo
- Publication number
- CN213957508U CN213957508U CN202022502528.2U CN202022502528U CN213957508U CN 213957508 U CN213957508 U CN 213957508U CN 202022502528 U CN202022502528 U CN 202022502528U CN 213957508 U CN213957508 U CN 213957508U
- Authority
- CN
- China
- Prior art keywords
- relay protection
- voltage
- protection tester
- automatic detection
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a relay protection tester automatic check out system, the system includes: change over switch and automatic checkout device, automatic checkout device is connected with change over switch through the cable, wherein: the automatic detection device includes: the device comprises a variable load, a voltage/current acquisition circuit, a multi-way selection switch, an A/D conversion circuit, a logic control circuit, a CPU, a communication interface and a power module; the variable load is connected with the voltage/current acquisition circuit, the voltage/current acquisition circuit is connected with the multi-path selection switch, the multi-path selection switch is connected with the A/D conversion circuit, and the A/D conversion circuit is connected with the CPU; the variable load is connected with the output end of the change-over switch and is used for bearing the multi-path voltage and current output by the relay protection tester. The embodiment of the utility model provides a realize the full-automatic intellectual detection system to the multiple performance index of microcomputer type relay protection tester, improve the efficiency and the quality of detection achievement.
Description
Technical Field
The utility model relates to an electric power tech field especially relates to a relay protection tester automatic check out system.
Background
The relay protection device is one of important secondary devices of the power system, reliable guarantee is provided for safe operation of the power system, the relay protection tester is used as an important tool for testing the characteristics of the relay protection device, the device state and the working performance of the relay protection tester also become important factors influencing the safety of the power system, and detection of the relay protection tester becomes a key for solving the problem. Related detection mechanisms at home and abroad are always carrying out detection, calibration and verification work on the relay protection tester. However, at present, the detection method of relevant parameters such as steady-state parameters, transient-state parameters, time measurement accuracy and the like of a relay protection tester by a relevant detection mechanism is still complicated and needs manual operation, and detection of different items is respectively carried out by adopting a digital multimeter and a phase frequency meter. Although some detection devices integrating multiple test functions appear in recent years, manufacturers of relay protection testers are numerous, communication modes and control methods of the manufacturers are different, and the relay protection testers of the manufacturers cannot be uniformly controlled, so that manual testing methods are mostly adopted for detection tasks at present, and the defects of complex detection procedures, low working efficiency, high working strength and the like are caused.
The utility model discloses mainly to the detection achievement of microcomputer type relay protection tester, research and development can be simultaneously to many relay protection testers develop full-automatic closed loop detection's intelligent detecting system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving among the prior art and can't realize the automatic acquisition process to the detection achievement of microcomputer type relay protection tester, provide a relay protection tester automatic check out system, realize the full-automatic intellectual detection system to the multiple performance index of microcomputer type relay protection tester, improve the efficiency and the quality of detection achievement.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an automatic detection system for a relay protection tester, the system comprising: change over switch and automatic checkout device, automatic checkout device is connected with change over switch through the cable, wherein:
the automatic detection device comprises a transfer switch, an automatic detection device and a control circuit, wherein the transfer switch is connected with a relay protection tester through a cable, and is used for inputting alternating current voltage, alternating current and direct current voltage output by the relay protection tester, and conducting and outputting the voltage and the current of the relay protection tester to the automatic detection device;
the automatic detection device includes: the device comprises a variable load, a voltage/current acquisition circuit, a multi-way selection switch, an A/D conversion circuit, a logic control circuit, a CPU, a communication interface and a power module; the variable load is connected with the voltage/current acquisition circuit, the voltage/current acquisition circuit is connected with the multi-way selection switch, the multi-way selection switch is connected with the A/D conversion circuit, the A/D conversion circuit is connected with the CPU, the CPU is connected with the communication interface, and the logic control circuit is connected with the variable load, the voltage/current acquisition circuit, the multi-way selection switch, the A/D conversion circuit and the CPU;
the variable load is connected with the output end of the change-over switch and is used for bearing the multi-path voltage and current output by the relay protection tester.
The change-over switch is connected with more than one relay protection tester.
The automatic detection system of the relay protection tester also comprises a router and an upper computer, wherein the router is respectively connected with the upper computer, the selector switch and the two relay protection testers through Ethernet cables; and the upper computer is respectively connected with the automatic detection device and the router through Ethernet cables.
The upper computer is realized through communication interface 1 information interaction between upper computer and the automatic checkout device, the upper computer is realized through communication interface 2 information interaction between upper computer and the relay protection tester.
The A/D conversion circuit is used for converting an input voltage analog signal into a digital signal for processing and calculation of a CPU, and is realized by adopting a 16-bit high-speed analog-to-digital conversion chip.
The embodiment of the utility model provides an in the provided relay protection tester automatic check out system, based on hardware architecture, can realize the data acquisition on the relay protection tester through change over switch, and can accept the voltage and the electric current of selected relay protection tester output through change over switch based on the hardware structure among the automatic checkout device, and realize gathering the voltage and the electric current of input according to the detection task automatically, the conversion, handle, operation such as calculation, full-automatic intelligent detection effect has been reachd, it needs the flow that artifical participation leads to effectively to have solved a relay protection tester detection achievement loaded down with trivial details, work efficiency is low, the scheduling problem that working strength is big.
When the detection system is matched with an upper computer, full-automatic intelligent detection on various performance indexes of the microcomputer type relay protection tester can be realized, the efficiency and the quality of detection work are improved, the detection system has compatible expansibility, automatic detection can be carried out on a plurality of microcomputer type relay protection testers at the same time, detection reports are generated automatically, an important guarantee is provided for shortening the inspection period of instrument equipment, and the problems that the flow is complicated, the working efficiency is low, the working strength is high and the like caused by manual participation in the detection work of the plurality of relay protection testers are effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is the utility model provides a relay protection tester automatic check out system's structure schematic diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 shows a schematic structural diagram of an automatic detection system of a relay protection tester in an embodiment of the present invention, where the system includes: automatic detection device, change over switch, router and host computer etc..
The automatic detection device is connected with the change-over switch through a cable and connected with the upper computer through an Ethernet cable, receives a detection scheme distributed by the upper computer, receives voltage and current output by the relay protection tester through the change-over switch, performs corresponding processing and calculation according to the detection scheme, and feeds detection data back to the upper computer after a detection task is completed.
The change-over switch is respectively connected with the automatic detection device and the two relay protection testers through cables and is connected with the router through an Ethernet cable, the change-over switch inputs alternating current voltage, alternating current and direct current voltage output by the two relay protection testers, receives a channel selection signal sent by the router, and selectively switches on and outputs the voltage and the current of the single relay protection tester to the automatic detection device.
The router is respectively connected with the upper computer, the change-over switch and the two relay protection testers through Ethernet cables, can receive control signals sent by the upper computer, controls a single relay protection tester to output corresponding voltage and current, feeds back working state data of the relay protection tester to the upper computer, and sends channel selection signals to the change-over switch.
The upper computer is respectively connected with the automatic detection device and the router through Ethernet cables and used for formulating a detection scheme, monitoring the detection process of the automatic detection device, controlling the output of the relay protection tester, receiving and storing detection data of the automatic detection device, performing further calculation and judgment according to the detection data, automatically generating a detection report and storing the detection report in a local database.
The automatic detection device comprises a variable load, a voltage/current acquisition circuit, a multi-way selection switch, an A/D conversion circuit, a logic control circuit, a CPU, a communication interface and a power module; the variable load is connected with the voltage/current acquisition circuit, the voltage/current acquisition circuit is connected with the multi-way selection switch, the multi-way selection switch is connected with the A/D conversion circuit, the A/D conversion circuit is connected with the CPU, the CPU is connected with the communication interface, and the logic control circuit is connected with the variable load, the voltage/current acquisition circuit, the multi-way selection switch, the A/D conversion circuit and the CPU.
The variable load is connected with the output end of the change-over switch through a cable and is used for bearing multiple paths of voltage and current output by a single relay protection tester, and meanwhile, the variable load can be controlled by an upper computer to realize automatic detection of the load capacity of the relay protection tester. The variable load can bear 6 paths of voltage in the range of 0-300V and 6 paths of current in the range of 0-50A of a single relay protection tester which is conducted by the change-over switch.
The voltage/current acquisition circuit is responsible for acquiring multiple paths of voltage and current applied to the variable load, and each path of voltage and current is converted into a corresponding voltage signal in a range of 0-10V for subsequent processing.
The multi-channel selection switch realizes the switching of the voltage signals after multi-channel conversion and sequentially transmits the voltage signals of each channel to the A/D conversion circuit for processing. The multi-way selection switch can realize the switching of 16 signals at most.
The A/D conversion circuit is used for converting an input voltage analog signal into a digital signal for processing and calculation of a CPU, and is realized by adopting a 16-bit high-speed analog-to-digital conversion chip.
The logic control module is used for controlling the logic in the automatic detection device and receiving the control instruction of the CPU to switch the logic among the modules of the variable load, the voltage/current acquisition circuit, the multi-way selection switch and the A/D conversion circuit.
The CPU is responsible for receiving detection schemes and detection items distributed by the upper computer, and executes control among the modules through the logic control module according to different detection items, so that the requirements of different test items are met.
The communication interface is used for information interaction between the automatic detection device and the upper computer, receiving a detection control command sent by the upper computer, and transmitting detection data to the upper computer, and can be a serial interface, a USB interface or an Ethernet interface.
The power module is used for providing power for the whole automatic detection device.
The upper computer comprises a detection scheme making module, a detection process monitoring module, a report editing and storing module and two communication interfaces, and a PC or an industrial personal computer is usually adopted.
The detection scheme making module is mainly used for establishing a detection scheme of the relay protection tester, and comprises the steps of selecting the equipment model and the equipment parameters of the relay protection tester, determining information such as detection items and detection flows and the like, and then carrying out detection in sequence according to the made detection scheme. The equipment parameters comprise the number of output channels, an alternating current output range, an alternating voltage output range, a direct current voltage output range and a frequency range, and the detection items comprise amplitude, phase, frequency, response speed, load carrying capacity, harmonic distortion rate, ripple coefficient and direct current component.
The detection process monitoring module is used for monitoring and controlling the whole detection process, controlling the automatic detection device to execute detection items in the detection scheme, calculating and processing detection data, and judging whether the detection result meets the requirement.
The report editing and storing module describes a standard report format by using a report template, automatically writes the equipment parameters and the detection result data into corresponding positions in the report template, and stores the detection report into a local database, so that the report can be conveniently retrieved and checked, and the data can be conveniently counted and analyzed.
And the communication interface 1 on the upper computer is used for information interaction between the upper computer and the automatic detection device, issuing a detection scheme to the automatic detection device and receiving detection data uploaded by the automatic detection device. And the communication interface 2 on the upper computer is used for information interaction between the upper computer and the relay protection tester, issuing an output control command to the relay protection tester and receiving the running state data fed back by the relay protection tester.
When the automatic detection system of the relay protection tester carries out detection on the two relay protection testers, corresponding detection schemes are made in an upper computer in advance according to the equipment models and the equipment parameters of the relay protection testers, and only the corresponding detection schemes need to be called during detection, one relay protection tester is selected through a router, and the required voltage and current are controlled to be output. The automatic detection device receives the voltage and the current output by the selected relay protection tester through the selector switch, collects, converts, processes, calculates and the like the input voltage and current according to the detection task, uploads the input voltage and current to the upper computer through the communication interface, and the upper computer further calculates and processes the detection data according to the content of the detection item. And then, detecting the next item, judging whether the detection result is qualified after all items in the scheme to be detected are detected, and calling a report template to generate a detection report. After one relay protection tester finishes detection, the upper computer selects another relay protection tester through the router, controls the selector switch to conduct the voltage and current output channels of the selected relay protection tester, and continues to detect the next relay protection tester.
Taking the detection of the alternating current voltage load capacity of the relay protection tester as an example, the upper computer sends a detection scheme to the automatic detection device through the communication interface 1, adjusts the variable load to be the maximum resistance, controls the relay protection tester to output a specified three-phase voltage through the communication interface 2 and the router, measures a three-phase voltage value between two ends of the variable load and a three-phase current value flowing through the variable load by the voltage/current acquisition circuit, and converts the three-phase voltage value and the three-phase current value into corresponding six-path voltage signals to be transmitted to the multi-path selection switch. The multi-channel selection switch sequentially gates six voltage signals to be transmitted to the A/D conversion circuit, and the voltage analog signals are converted into digital signals to be sent to the CPU for processing and calculation. The CPU adjusts the resistance of the variable load to be gradually reduced from the maximum value through the logic control circuit, and the inflection point with the voltage precision and the distortion degree not exceeding the qualified range is detected to be the maximum output power of the voltage source. The CPU calculates power data according to the voltage and current data and feeds the detection data back to the upper computer through the communication interface for processing.
The utility model discloses a relay protection tester automatic check out system of research and development realizes improving the efficiency and the quality of detection achievement to the full-automatic intellectual detection system of the multiple performance index of microcomputer type relay protection tester. The detection system has compatible expansibility, can carry out automatic detection aiming at a plurality of microcomputer type relay protection testers simultaneously, can automatically generate a detection report, provides important guarantee for shortening the inspection period of instrument equipment, and effectively solves the problems of complicated flow, low working efficiency, high working strength and the like caused by manual participation in the detection work of the plurality of relay protection testers.
The embodiments of the present invention have been described in detail, and the principle and the implementation of the present invention are explained herein by using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (5)
1. An automatic detection system for a relay protection tester, the system comprising: change over switch and automatic checkout device, automatic checkout device is connected with change over switch through the cable, wherein:
the automatic detection device comprises a transfer switch, an automatic detection device and a control circuit, wherein the transfer switch is connected with a relay protection tester through a cable, and is used for inputting alternating current voltage, alternating current and direct current voltage output by the relay protection tester, and conducting and outputting the voltage and the current of the relay protection tester to the automatic detection device;
the automatic detection device includes: the device comprises a variable load, a voltage/current acquisition circuit, a multi-way selection switch, an A/D conversion circuit, a logic control circuit, a CPU, a communication interface and a power module; the variable load is connected with the voltage/current acquisition circuit, the voltage/current acquisition circuit is connected with the multi-way selection switch, the multi-way selection switch is connected with the A/D conversion circuit, the A/D conversion circuit is connected with the CPU, the CPU is connected with the communication interface, and the logic control circuit is connected with the variable load, the voltage/current acquisition circuit, the multi-way selection switch, the A/D conversion circuit and the CPU;
the variable load is connected with the output end of the change-over switch and is used for bearing the multi-path voltage and current output by the relay protection tester.
2. The automatic detection system of claim 1, wherein the switch is connected to more than one relay protection tester.
3. The automatic detection system of the relay protection tester as claimed in claim 2, wherein the automatic detection system of the relay protection tester further comprises a router and an upper computer, the router is respectively connected with the upper computer, the change-over switch and the two relay protection testers through ethernet cables; and the upper computer is respectively connected with the automatic detection device and the router through Ethernet cables.
4. The automatic detection system of claim 3, wherein the upper computer realizes information interaction between the upper computer and the automatic detection device through a communication interface 1, and the upper computer realizes information interaction between the upper computer and the relay protection tester through a communication interface 2.
5. The automatic detection system of the relay protection tester as claimed in any one of claims 1 to 4, wherein the A/D conversion circuit is used to convert the input voltage analog signal into digital signal for processing and calculation by CPU, and is implemented by using a 16-bit high-speed analog-to-digital conversion chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022502528.2U CN213957508U (en) | 2020-11-03 | 2020-11-03 | Automatic detection system of relay protection tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022502528.2U CN213957508U (en) | 2020-11-03 | 2020-11-03 | Automatic detection system of relay protection tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213957508U true CN213957508U (en) | 2021-08-13 |
Family
ID=77206500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022502528.2U Active CN213957508U (en) | 2020-11-03 | 2020-11-03 | Automatic detection system of relay protection tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213957508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814416A (en) * | 2022-04-13 | 2022-07-29 | 许继集团有限公司 | Protection testing device for subway large-partition power supply system and control method thereof |
-
2020
- 2020-11-03 CN CN202022502528.2U patent/CN213957508U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814416A (en) * | 2022-04-13 | 2022-07-29 | 许继集团有限公司 | Protection testing device for subway large-partition power supply system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201373911Y (en) | Integrated test system for switch power source | |
| CN201378204Y (en) | Automatic detecting and metrological characteristic analyzing device for energy meter standard devices | |
| CN105785306A (en) | Voltage transformer on-line group calibration method and apparatus | |
| CN107515370A (en) | A kind of PCBA detection means and detection method | |
| CN101957428B (en) | Automatic test method and tool of monitoring circuit board | |
| CN213957508U (en) | Automatic detection system of relay protection tester | |
| CN107490735A (en) | A kind of power distribution network terminal automatic test approach and test device | |
| CN103957067A (en) | Automatic testing device and system of demodulator | |
| CN111240305A (en) | Automatic calibration test method and system for data acquisition equipment | |
| CN104459435A (en) | Wiring verification method and device for transformer substation | |
| CN106768074A (en) | A kind of end product automatic test device, system and method | |
| CN101393240A (en) | Electric network harmonic on-line supervisory circuit based on virtual instrument and working method thereof | |
| CN109799419A (en) | A kind of secondary error connection analyzer of exchange | |
| CN109270376A (en) | A kind of microcontroller pin automatically testing parameters platform and test method | |
| CN117347743A (en) | Three-phase wiring phase sequence error detection and automatic adjustment device and method | |
| CN116819366A (en) | Battery impedance detection method and system for battery pack | |
| CN201281755Y (en) | Assay system for multichannel multi-parameter electric measuring meter | |
| CN211427149U (en) | Automatic calibration test system of data acquisition equipment | |
| CN108241137B (en) | Basic error traceability device of merging unit tester | |
| CN202974086U (en) | Automatic calibration system for radio fuse tester | |
| CN112834966B (en) | Automatic test system for satellite electrical interface | |
| CN101039044B (en) | Electrical distribution monitoring system and monitoring method | |
| CN211318672U (en) | Fault diagnosis system for multiport network nonlinear analog circuit | |
| CN114257244A (en) | ADC chip test circuit, method, test device and storage medium | |
| CN209486226U (en) | A kind of secondary error connection analyzer of exchange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |