CN203929362U - Mechanical property data collector based on breaker trip signal - Google Patents
Mechanical property data collector based on breaker trip signal Download PDFInfo
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- CN203929362U CN203929362U CN201320799393.8U CN201320799393U CN203929362U CN 203929362 U CN203929362 U CN 203929362U CN 201320799393 U CN201320799393 U CN 201320799393U CN 203929362 U CN203929362 U CN 203929362U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 24
- 230000003750 conditioning effect Effects 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000011160 research Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001212149 Cathetus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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Abstract
The utility model belongs to breaker technical field, relates in particular to a kind of mechanical property data collector based on breaker trip signal.The utility model comprises isolating switch; Also comprise stroke sensor, voltage conditioning element, AD conversion element, clock element, source element and CPU (central processing unit).It is the contact travel signal based in isolating switch course of action, utilizes linear displacement transducer, voltage conditioning element, AD conversion element, clock element, source element and CPU (central processing unit) to realize the data acquisition of breaker mechanic property.On this data basis, can further realize the evaluation to the High Voltage Circuit Breaker Condition.
Description
Technical field
The utility model belongs to breaker technical field, relates in particular to a kind of mechanical property data collector based on breaker trip signal.
Background technology
Primary cut-out is one of visual plant in electric system, and its running status directly affects operation stability and the power supply reliability of electric system.Primary cut-out mainly comprises mechanical property, electrical specification and three characteristics of insulation characterisitic, wherein the research of breaker mechanic property can reflect more than 80% fault, therefore the running status of, grasping timely and accurately isolating switch all has important practical significance for the operational reliability that instructs circuit-breaker status maintenance and improve electric system.
At present, the research of primary cut-out running status appraisal procedure aspect is considerably less, the main comprehensive evaluation that adopts multiple signals on signal, but the most direct signal of reflection breaker mechanic property is contact travel signal, other signal is all indirect signal, adopts the comprehensive evaluation of many signals to be difficult to determine the weight of other indirect signal.Therefore, need to carry out deep research to the evaluation of running status method of mechanical characteristic of high-voltage circuit breaker, all have important practical significance for the operational reliability that instructs circuit-breaker status maintenance and raising electric system.
Summary of the invention
For in prior art deficiency, the utility model provides a kind of mechanical property data collector based on breaker trip signal.
The technical solution of the utility model is achieved in that
A mechanical property data collector based on breaker trip signal, comprises isolating switch; Also comprise stroke sensor, voltage conditioning element, AD conversion element, clock element, source element and CPU (central processing unit).
Described stroke sensor, selects high-precision angular displacement sensor or linear displacement transducer according to the difference of isolating switch mounting means; The current supply circuit of this sensor is to be connected with voltage conditioning element, and its operational voltage value is two kinds of 12V and 24V, and signal circuit is connected with AD conversion element, and the voltage range of output is 0～5V.
Described voltage conditioning element, can be stroke sensor power supply, the 5V voltage transitions of AD conversion element output can also be become to the receptible 3.3V voltage of CPU (central processing unit), and above-mentioned two elements are connected.
Described AD conversion element is mainly made up of ADS8364 chip and peripheral circuit thereof.
Described CPU (central processing unit) is mainly made up of TMS320F28335 chip and peripheral circuit thereof.
Described clock element is connected with CPU (central processing unit), can be AD conversion element sample frequency is provided.
Described source element, is connected with each element by CPU (central processing unit), can be whole device power supply is provided.
Advantage of the present utility model and beneficial effect are as follows:
The utility model provides a kind of mechanical property data collector based on breaker trip signal, contact travel signal based in isolating switch course of action, utilizes linear displacement transducer, voltage conditioning element, AD conversion element, clock element, source element and CPU (central processing unit) to realize the data acquisition of breaker mechanic property.On this data basis, can further realize the evaluation to the High Voltage Circuit Breaker Condition.
Brief description of the drawings
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the utility model cathetus position transducer schematic diagram;
Fig. 3 be in the utility model 12V/24V input voltage level change-over circuit as figure;
Fig. 4 is 0～5V level conversion element circuitry figure in the utility model;
Fig. 5 is 5V～3.3V level shifting circuit schematic diagram in the utility model;
Fig. 6 is the circuit theory diagrams of AD conversion element in the utility model;
Fig. 7 is the CPU (central processing unit) connector 10 pin key diagrams in the utility model;
Fig. 8 is the CPU (central processing unit) connector 11 pin key diagrams in the utility model;
Fig. 9 is isolating switch contact travel divide-shut brake signal measured data figure in the utility model;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, a kind of mechanical property data collector based on breaker trip signal, comprises isolating switch, stroke sensor, voltage conditioning element, AD conversion element, clock element, source element and CPU (central processing unit).
Stroke sensor described in the utility model, selects high-precision angular displacement sensor or linear displacement transducer according to the difference of isolating switch mounting means; The current supply circuit of this sensor is to be connected with voltage conditioning element, and its operational voltage value is two kinds of 12V and 24V, and signal circuit is connected with AD conversion element, and the voltage range of output is 0～5V.
Described voltage conditioning element, can be stroke sensor power supply, the 5V voltage transitions of AD conversion element output can also be become to the receptible 3.3V voltage of CPU (central processing unit), and above-mentioned two elements are connected.
Described clock element is connected with CPU (central processing unit), can be AD conversion element sample frequency is provided.
Described source element, is connected with each element by CPU (central processing unit), can be whole device power supply is provided.
In present embodiment, isolating switch adopts the ZW45 type monostable permanent magnet mechanism breaker of vacuum 10kv.
Contact of breaker stroke sensor adopts resistance-type linear displacement transducer, and range is 50mm, wider range, the redundancy properties of be characterized in simple in structure, easy for installation, cost is low, applicable, and principle of work is as shown in Figure 2.In enforcement, displacement transducer is arranged on the insulated tension pole of isolating switch B phase.
Contact of breaker stroke signal need to provide voltage to sensor while collection, and voltage is larger, and the signal to noise ratio (S/N ratio) of sensor output signal is higher.According to existing power supply condition, consider the restriction of power consumption and temperature rise, select 24V and 12V two schemes, output signal, by reduction voltage circuit, is down between 0 to 5V.
12V/24V input voltage level change-over circuit as shown in Figure 3.In circuit, use OP07 operational amplifier to build follower, its input impedance is high, and output impedance is low, plays the effect of buffer stage and isolation level, meets the characteristic of circuit two ends impedance matching.
Because AD conversion element has difference input, so can pass through Design of Amplifiers level shifting circuit, make it accept bipolarity input, by expand to from 0V to 5V-5V of the acquisition range of AD conversion element to+5V.As shown in Figure 4, the effect of this circuit is that the signal of stroke sensor output has been carried out to level conversion to level shifting circuit, converts 0～5V signal to.
AD acquisition elements output signal is between 0～5V, and CPU (central processing unit) supply power is 3.3V, so between need to add a level shifting circuit.This chip can be by controlling the input and output direction of the 1st pin and the 24th pin DIR function control chip pin, and input end can connect 3.3V or 5V power supply, and output can connect 3.3V circuit.Circuit theory diagrams as shown in Figure 5.
AD conversion element is mainly made up of ADS8364 chip and peripheral circuit thereof.Its advantage be for can gather six tunnel simulating signal amounts simultaneously, effective accuracy sixteen bit, and frequency is up to 250kHz.The circuit theory diagrams of AD conversion element as shown in Figure 6.The frequency acquisition of breaker trip signal is arranged to 10kHz, meets the sampling request of signal.
CPU (central processing unit) is mainly made up of TMS320F28335 chip and peripheral circuit thereof, principal feature: (1) processing speed is fast, dominant frequency 150MHz; (2) in sheet, carry SRAM, Flash; (3) external memory interface; (4) numerous external units, as SCI, SPI, CAN, EV, ADC etc.; (5) a large amount of controllable GPIO mouths.Digital signal processor is supported the programming of the language such as C.The storage space of its storer is large, can be as the collection of big data quantity, computing, transmission operation; Fig. 7 is the CPU (central processing unit) connector 10 pin key diagrams in the utility model, the AD input pin of the displacement signal that wherein AD0 is isolating switch; Fig. 8 is the CPU (central processing unit) connector 11 pin key diagrams in the utility model.
Fig. 9 is the measured data figure of isolating switch contact travel divide-shut brake signal in the utility model.
Claims (5)
1. the mechanical property data collector based on breaker trip signal, comprise isolating switch, it is characterized in that: also comprise stroke sensor, voltage conditioning element, AD conversion element, clock element, source element and CPU (central processing unit), described CPU (central processing unit) is mainly made up of TMS320F28335 chip and peripheral circuit thereof, and described AD conversion element is mainly made up of ADS8364 chip and peripheral circuit thereof.
2. the mechanical property data collector based on breaker trip signal according to claim 1, is characterized in that: described stroke sensor, select high-precision angular displacement sensor or linear displacement transducer according to the difference of isolating switch mounting means; The current supply circuit of this sensor is to be connected with voltage conditioning element, and its operational voltage value is two kinds of 12V and 24V, and signal circuit is connected with AD conversion element, and the voltage range of output is 0～5V.
3. the mechanical property data collector based on breaker trip signal according to claim 1, it is characterized in that, described voltage conditioning element, can be stroke sensor power supply, the 5V voltage transitions of AD conversion element output can also be become to the receptible 3.3V voltage of CPU (central processing unit), and above-mentioned two elements are connected.
4. the mechanical property data collector based on breaker trip signal according to claim 1, is characterized in that, described clock element is connected with CPU (central processing unit), can be AD conversion element sample frequency is provided.
5. the mechanical property data collector based on breaker trip signal according to claim 1, is characterized in that, described source element is connected with each element by CPU (central processing unit), can be whole device power supply is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799393.8U CN203929362U (en) | 2013-12-05 | 2013-12-05 | Mechanical property data collector based on breaker trip signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799393.8U CN203929362U (en) | 2013-12-05 | 2013-12-05 | Mechanical property data collector based on breaker trip signal |
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| Publication Number | Publication Date |
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| CN203929362U true CN203929362U (en) | 2014-11-05 |
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| CN201320799393.8U Expired - Lifetime CN203929362U (en) | 2013-12-05 | 2013-12-05 | Mechanical property data collector based on breaker trip signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057280A (en) * | 2019-03-28 | 2019-07-26 | 中国电力科学研究院有限公司 | A kind of the monitoring system and monitoring method of contact of breaker stroke |
-
2013
- 2013-12-05 CN CN201320799393.8U patent/CN203929362U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057280A (en) * | 2019-03-28 | 2019-07-26 | 中国电力科学研究院有限公司 | A kind of the monitoring system and monitoring method of contact of breaker stroke |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
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Granted publication date: 20141105 |