CN207798968U - Transformer substation system interference detection module and avalanche test equipment - Google Patents
Transformer substation system interference detection module and avalanche test equipment Download PDFInfo
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- CN207798968U CN207798968U CN201820066457.6U CN201820066457U CN207798968U CN 207798968 U CN207798968 U CN 207798968U CN 201820066457 U CN201820066457 U CN 201820066457U CN 207798968 U CN207798968 U CN 207798968U
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Abstract
The utility model discloses a kind of transformer substation system interference detection module and avalanche test equipment.Wherein, transformer substation system interference detection module includes：Piezoelectricity pickup piece, connect with the output relay of test equipment, for the motion and sound of the collected output relay to be converted to the first signal；Plastic filter circuit is connect with the piezoelectricity pickup piece, for providing voltage driving for the piezoelectricity pickup piece and obtaining second signal to receiving the first signal progress shaping filter；Freq converting circuit is connect with the plastic filter circuit, and third signal is obtained for carrying out frequency conversion to the second signal；Processor is connect with the freq converting circuit, and the working condition of the test equipment is determined with the working frequency for comparing the third signal and the preset output relay.The utility model is solved to cause to judge by accident, fail to judge since test equipment is interfered, the technical problem of caused test result inaccuracy.
Description
Technical field
This practicality field of power electronics, in particular to a kind of transformer substation system interference detection module and avalanche test
Equipment.
Background technology
CHINA SOUTHERN POWER company standard《10kV -500kV power transmission and transformation and distribution engineering inspection of quality and evaluation criteria》
The Q/CSG table 6-1.1.1 hosts of the power transformation automation part (Q/CSG 411002-2012), operator station subdivisional work quality are tested
It receives and is distinctly claimed in record sheet:The test of system snowslide processing capacity is one of main items for acceptance, that is, require 110kV (220,
500) optional 5 (10,20) platform measure and control device in electric substation automation system, the optional 20 remote signalling point of every measure and control device, totally 100
(200,400) point, remote signalling per second conjugate 2 times, and it is normal to continue 1 (5,10) minute system operation, do not occur that device is restarted, system collapses
The problems such as bursting, automatically switching.
But due to live complicated electromagnetic compatible environment, power frequency radiation is big, and spark interference is strong, and the work of avalanche test equipment
Working frequency is near power frequency range, causes test operation hidden danger, occur Injection Signal disorder, period discontinuity, improper start and stop,
The serious consequences such as out of control, data acquisition loss are exported, maximum harm is because various interference keep avalanche signal transient
It is abnormal and test equipment failure (restart, system crash, automatic switchover) is caused to cause to judge by accident.
Cause to judge by accident since test equipment is interfered, fail to judge for above-mentioned, the problem of caused test result inaccuracy,
Currently no effective solution has been proposed.
Utility model content
The utility model embodiment provides a kind of transformer substation system interference detection module and avalanche test equipment, at least
Solution causes to judge by accident, fail to judge since test equipment is interfered, the technical problem of caused test result inaccuracy.
According to the one side of the utility model embodiment, a kind of transformer substation system interference detection module is provided, including：
Piezoelectricity pickup piece, connect with the output relay of test equipment, is used for the motion and sound of the collected output relay
Be converted to the first signal；Plastic filter circuit is connect with the piezoelectricity pickup piece, for providing voltage for the piezoelectricity pickup piece
It drives and obtains second signal to receiving the first signal progress shaping filter；Freq converting circuit is filtered with the shaping
Wave circuit connects, and third signal is obtained for carrying out frequency conversion to the second signal；Processor, with frequency conversion electricity
Road connects, and the work of the test equipment is determined with the working frequency for comparing the third signal and the preset output relay
Make state.
Further, the chip model of the plastic filter circuit is MAX9812L.
Further, the chip model of the freq converting circuit is AD650.
Further, the working condition of the test equipment includes working properly and operation irregularity, and the processor determines
The working condition of the test equipment includes, identical as the preset working frequency of the output relay in the third signal
When, determine that the working condition of the test equipment is working properly；In the third signal and the preset output relay
Working frequency difference when, determine the test equipment working condition be operation irregularity.
Further, the processor is additionally operable to send out alarm when the working condition of the test equipment is operation irregularity
Signal.
Further, the test equipment is avalanche test equipment.
According to the other side of the utility model embodiment, a kind of avalanche test equipment, including above-mentioned reality are additionally provided
Apply the transformer substation system interference detection module described in any one of example
In the utility model embodiment, the anti-interference detection module of transformer substation system includes：Piezoelectricity pickup piece, with test equipment
Output relay connection, for the motion and sound of the collected output relay to be converted to the first signal；Shaping is filtered
Wave circuit is connect with the piezoelectricity pickup piece, for providing voltage driving for the piezoelectricity pickup piece and to receiving described the
One signal carries out shaping filter and obtains second signal；Freq converting circuit is connect with the plastic filter circuit, for described
Second signal carries out frequency conversion and obtains third signal；Processor is connect with the freq converting circuit, with the comparison third
The working frequency of signal and the preset output relay determines the working condition of the test equipment, passes through transformer substation system
Anti-interference detection module could be aware that whether test equipment receives interference, solve due to test equipment be interfered cause erroneous judgement,
It fails to judge, the technical problem of caused test result inaccuracy.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the signal according to a kind of optional anti-interference detection module of transformer substation system of the utility model embodiment
Figure；
Fig. 2 is the circuit diagram according to a kind of optional plastic filter circuit of the utility model embodiment；
Fig. 3 is the circuit diagram according to a kind of optional freq converting circuit of the utility model embodiment；
Fig. 4 is the schematic diagram according to a kind of optional avalanche test equipment of the utility model embodiment.
Specific implementation mode
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
According to the one side of the utility model embodiment, a kind of transformer substation system interference detection module is provided, Fig. 1 is
According to a kind of schematic diagram of optional anti-interference detection module of transformer substation system of the utility model embodiment, as shown in Figure 1, should
Transformer substation system interference detection module includes：
Piezoelectricity pickup piece 10, connect with the output relay of test equipment, for moving collected output relay
The first signal is converted to as sound.
Plastic filter circuit 12 is connect with piezoelectricity pickup piece, for providing voltage driving and docking for piezoelectricity pickup piece
It receives the first signal progress shaping filter and obtains second signal.
Freq converting circuit 14, connect with plastic filter circuit, and third is obtained for carrying out frequency conversion to second signal
Signal.
Processor 16, connect with freq converting circuit, with the work frequency of comparison third signal and preset output relay
Rate determines the working condition of test equipment.
Specifically, after test equipment sets test period, letter is sent by the way that the working frequency of output relay is arranged
Number arrive measure and control device to be measured, piezoelectricity pickup piece 10 can be tightly attached to output relay setting, collected first signal can
To be sound-source signal, which sends after plastic filter circuit 12 and freq converting circuit 14 carry out signal processing
To processor 16.Wherein, processor 16 can be separately provided, and can also be to be integrally designed with the processing module of test equipment.
It should be noted that plastic filter circuit 12, freq converting circuit 14 can use microcontroller or CPU software portion
Divide and completes.Large volume may be used in output relay, high current is got an electric shock, and can not only improve reliability, but also can ensure that piezoelectricity picks up
Tablet can accurately acquire the signal of sound.
In the utility model embodiment, the anti-interference detection module of transformer substation system includes：Piezoelectricity pickup piece, with test equipment
Output relay connection, for the motion and sound of the collected output relay to be converted to the first signal；Shaping is filtered
Wave circuit is connect with the piezoelectricity pickup piece, for providing voltage driving for the piezoelectricity pickup piece and to receiving described the
One signal carries out shaping filter and obtains second signal；Freq converting circuit is connect with the plastic filter circuit, for described
Second signal carries out frequency conversion and obtains third signal；Processor is connect with the freq converting circuit, with the comparison third
The working frequency of signal and the preset output relay determines the working condition of the test equipment, passes through transformer substation system
Anti-interference detection module could be aware that whether test equipment receives interference, solve due to test equipment be interfered cause erroneous judgement,
It fails to judge, the technical problem of caused test result inaccuracy.
In some alternative embodiments, the chip model of the plastic filter circuit is MAX9812L.Such as Fig. 2 institutes
Show, plastic filter circuit is by MAX9812L chip manufacturings, and built-in single 20dB fixed gain amplifiers, size is small, has industry
The 100dB power supply rejection ratio of boundary's top-level, extremely low THD+N (0.015%), 230 μ A operating currents, can 2.7~
It works under the voltage range of 3.6V, high s/n ratio, low energy consumption, portable sound-source signal is provided for low-pass filter rear class.IN
Pin is signal input pin, and the sound of output relay is transformed into faint electric current by piezoelectricity pickup piece, and chip passes through IN
Pin receives.BIAS pins are voltage compensation pin, can ensure that normal driving pickup piece works under a variety of supply voltages, and drop
Influence of the fluctuation of low-voltage to signal processing.
In a kind of optional embodiment, the chip model of freq converting circuit is AD650, as shown in figure 3, frequency turns
Circuit is changed using accurate monolithic voltage-frequency conversion AD650 chip manufacturings, dynamic range is big, and peripheral cell is few, very low nonlinearity,
Gain temperature is stablized, and digital resolution reaches 14.
In a kind of optional embodiment, the working condition of test equipment includes working properly and operation irregularity, processing
Device determines that the working condition of test equipment includes, when third signal is identical as the working frequency of preset output relay, really
The working condition for determining test equipment is working properly；In the working frequency difference of third signal and preset output relay,
Determine that the working condition of test equipment is operation irregularity.
In a kind of optional embodiment, processor is additionally operable to send out when the working condition of test equipment is operation irregularity
Go out alarm signal.
Specifically, processor can be by sending out alarm signal, to remind test equipment to be interfered, can be by restarting
Modes, the promptings such as test equipment, the output for disconnecting test side back re-start test.
In a kind of optional embodiment, any one test equipment is avalanche test equipment in above-described embodiment
According to the utility model embodiment, a kind of avalanche test equipment is additionally provided, as shown in figure 4, the avalanche test is set
Standby 2 include any one of the above transformer substation system interference detection module 1.
Specifically, entire avalanche test equipment should can use metal full-shield, circuit one point earth, output interface simultaneously
Connect anti-interference magnet ring, power supply reinforces the conventional interference protection measure such as filtering.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of transformer substation system interference detection module, which is characterized in that including：
Piezoelectricity pickup piece, connect with the output relay of test equipment, is used for the action of the collected output relay
Sound is converted to the first signal；
Plastic filter circuit is connect with the piezoelectricity pickup piece, for for the piezoelectricity pickup piece provide voltage driving and it is right
It receives the first signal progress shaping filter and obtains second signal；
Freq converting circuit is connect with the plastic filter circuit, and the is obtained for carrying out frequency conversion to the second signal
Three signals；
Processor is connect with the freq converting circuit, with the comparison third signal and the preset output relay
Working frequency determines the working condition of the test equipment.
2. transformer substation system interference detection module according to claim 1, which is characterized in that the plastic filter circuit
Chip model is MAX9812L.
3. transformer substation system interference detection module according to claim 1, which is characterized in that the freq converting circuit
Chip model is AD650.
4. transformer substation system interference detection module according to claim 1, which is characterized in that the work of the test equipment
State includes working properly and operation irregularity, and the processor determines that the working condition of the test equipment includes, described
When three signals are identical as the preset working frequency of the output relay, determine that the working condition of the test equipment is work
Normally；In the working frequency difference of the third signal and the preset output relay, the test equipment is determined
Working condition is operation irregularity.
5. transformer substation system interference detection module according to claim 4, which is characterized in that the processor is additionally operable to
The working condition of the test equipment sends out alarm signal when being operation irregularity.
6. transformer substation system interference detection module according to any one of claim 1 to 5, which is characterized in that the survey
Examination equipment is avalanche test equipment.
7. a kind of avalanche test equipment, which is characterized in that the avalanche test equipment includes described in any one of claim 1-5
Transformer substation system interference detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820066457.6U CN207798968U (en) | 2018-01-16 | 2018-01-16 | Transformer substation system interference detection module and avalanche test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820066457.6U CN207798968U (en) | 2018-01-16 | 2018-01-16 | Transformer substation system interference detection module and avalanche test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798968U true CN207798968U (en) | 2018-08-31 |
Family
ID=63272167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820066457.6U Active CN207798968U (en) | 2018-01-16 | 2018-01-16 | Transformer substation system interference detection module and avalanche test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798968U (en) |
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2018
- 2018-01-16 CN CN201820066457.6U patent/CN207798968U/en active Active
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