CN203365117U - Mechanical strength prediction device of gas-insulated power distribution cabinet - Google Patents
Mechanical strength prediction device of gas-insulated power distribution cabinet Download PDFInfo
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- CN203365117U CN203365117U CN2013203605558U CN201320360555U CN203365117U CN 203365117 U CN203365117 U CN 203365117U CN 2013203605558 U CN2013203605558 U CN 2013203605558U CN 201320360555 U CN201320360555 U CN 201320360555U CN 203365117 U CN203365117 U CN 203365117U
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Abstract
The utility model provides a mechanical strength prediction device of a gas-insulated power distribution cabinet, and belongs to the technical field of power distribution cabinets. The device comprises a current sensor, a voltage sensor, a gas pressure sensor, an insulation tester, a digital sound level meter, a data acquisition chip, a central processing unit, an industrial personal computer and a wireless communication module. By adopting the mechanical strength prediction device, the mechanical health state of the power distribution cabinet is understood, early or unnecessary power failure tests and maintenance are reduced, the power distribution cabinet can be maintained when maintenance is needed, the reliability and the economical efficiency of an electric power system are substantially improved, the mechanical strength of the novel indoor gas-insulated power distribution cabinet researched, developed and manufactured by a production enterprise itself is predicted and analyzed, and the maintenance is convenient for maintenance personnel.
Description
Technical field
Belong to the power distribution cabinet technical field, particularly a kind of gas-insulated power distribution cabinet physical strength prediction unit.
Background technology
Relevant statistics shows, 30% power distribution network maintenance cost be flower on power distribution cabinet, and 20% be wherein again light maintenance and regular maintenance for power distribution cabinet, in addition according to statistics, 15% power distribution cabinet fault is due to due to incorrect maintenance, the overhaul of power distribution cabinet is disintegrated fully, both time-consuming, expense is very high again, can reach 40% of whole power distribution cabinet, and disintegrate and ressemble and can cause a lot of defects, consequent accident example is too numerous to enumerate especially, which parts (or critical elements) for power distribution cabinet, how long operation needs to change, be still the problem of a dispute, in fact at present more conservative scheduled overhaul, it is still functional when a lot of years rear renewals of many parts operations occur often, and owing to not finding in time, a certain parts defect occurs and cause the situation of power grid accident also to happen occasionally.And the proportion of gas-insulated power distribution cabinet in power distribution cabinet increases just gradually, the physical strength of gas-insulated power distribution cabinet is one of greatest weakness of this power distribution cabinet, and the prediction of the physical strength of gas-insulated power distribution cabinet provides condition to later maintenance.
Summary of the invention
For the deficiencies in the prior art, the utility model proposes a kind of gas-insulated power distribution cabinet physical strength prediction unit, reduce too early or unnecessary power failure test and maintenance to reach, improve the purpose of the convenience of Power System Reliability, economy and maintenance.
A kind of gas-insulated power distribution cabinet physical strength prediction unit, comprise current sensor, voltage sensor, baroceptor, insulation tester, digital sound level meter, data acquisition chip, central processing unit, industrial computer and wireless communication module;
Wherein, five road input ends of described data acquisition chip connect the output terminal of current sensor, the output terminal of voltage sensor, the output terminal of baroceptor, the output terminal of insulation tester and the output terminal of digital sound level meter successively, the output terminal of data acquisition chip connects the input end of central processing unit, and the two-way output terminal of central processing unit connects the input end of industrial computer and the input end of wireless communication module successively.
The utility model advantage:
A kind of gas-insulated power distribution cabinet of the utility model physical strength prediction unit, can understand the mechanical health status of power distribution cabinet, reduce too early or unnecessary power failure test and maintenance, accomplish to answer Xiu Zexiu, Power System Reliability and economy have been significantly improved, manufacturing enterprise is researched and developed voluntarily and manufactures to the Novel indoor gas-insulated power distribution cabinet physical strength of production and carry out forecast analysis, can the convenient for maintaining personnel be overhauled.
The accompanying drawing explanation
The gas-insulated power distribution cabinet physical strength prediction unit structured flowchart of a kind of embodiment of Fig. 1 the utility model;
The gas-insulated power distribution cabinet physical strength prediction unit work schematic diagram of a kind of embodiment of Fig. 2 the utility model;
A/D converter and the processor of the gas-insulated power distribution cabinet physical strength prediction unit of a kind of embodiment of Fig. 3 the utility model
Circuit theory diagrams;
The level-conversion circuit schematic diagram of a kind of embodiment of Fig. 4 the utility model;
Prediction machinery intensity curve and the actual machine intensity of a kind of embodiment of Fig. 5 the utility model.
Embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of the utility model is described further.
As shown in Figure 1, a kind of gas-insulated power distribution cabinet physical strength prediction unit,, comprise current sensor, voltage sensor, baroceptor, insulation tester, digital sound level meter, data acquisition chip, central processing unit, industrial computer and wireless communication module;
Wherein, five road input ends of described data acquisition chip connect the output terminal of current sensor, the output terminal of voltage sensor, the output terminal of baroceptor, the output terminal of insulation tester and the output terminal of digital sound level meter successively, the output terminal of data acquisition chip connects the input end of central processing unit, and the two-way output terminal of central processing unit connects the input end of industrial computer and the input end of wireless communication module successively.
In the utility model embodiment, gas-insulated power distribution cabinet model is ZGSM; As shown in Figure 2, by gas perfect match electricity cabinet-type air conditioner tool prediction of strength, the result of prediction is sent by wireless module, by 3G network, be sent to the remote dispatching terminal.
Signal acquisition module in the utility model embodiment comprises voltage transformer (VT), current transformer, baroceptor, insulation tester, digital sound level meter, wherein, voltage sensor adopts JDG5-0.5 1200/108 model, current sensor adopts LZJC-15Q1020/10 model current transformer, be installed to the power distribution cabinet end of incoming cables, insulation tester is selected DL09-SDM50, be positioned on the insulation shell of power distribution cabinet and gather insulating coefficient, digital sound level meter is selected 5633B, and baroceptor selects PT603 to be placed in power distribution cabinet.
In the utility model embodiment, as shown in Figure 3, described data acquisition chip, i.e. A/D converter, select 12 bits serial A of TLC2044 model/D converter, and wherein, AIN0-AIN10 is analog input end; CS is sheet choosing end; DIN is the serial data input end; The tri-state serial output terminal that DOUT is the A/D transformation result; EOC is the EOC end; CLK is the I/O clock; REF+ is positive reference voltage terminal; REF-is negative reference voltage terminal; VCC is power supply; GND is ground.
In the utility model embodiment, as shown in Figure 3, central processing unit is selected the single-chip microcomputer that model is CS8051, and the serial port that uses single-chip microcomputer to carry, can realize the serial communication with industrial computer, the COM1 that PC provides now, COM2 adopts the RS-232 interface standard, and RS-232 carrys out the presentation logic state with generating positive and negative voltage, from TTL, with low and high level, come the regulation of presentation logic state different, therefore, in order to be connected with computer interface or with the TTL device (as single-chip microcomputer) of terminal, must between RS-232 and TTL circuit, carry out the conversion of level and logical relation, as shown in Figure 4, translation circuit in the present embodiment is selected MAX232, this device comprises 2 drivers, 2 receivers and a voltage generator circuit, this voltage generator circuit provides the TIA/EIA-232-F level, this device meets the TIA/EIA-232-F standard, each receiver becomes 5V TT L/CMOS level by the TIA/EIA-232-F level conversion, each generator becomes the TIA/EIA-232-F level by the TTL/CMOS level conversion, single-chip microcomputer is the core of whole device, serial a/d converter TLC2044 is gathered the simulating signal of input, sampling resolution, ALT-CH alternate channel and output polarity are selected by software, owing to being the serial input structure, can save 51 series monolithic I/O resources, the data that single-chip microcomputer gathers are by serial ports RXD, TXD pin (10, 11 pins) convert between RS232 level and industrial computer and realize transmission through MAX232.
In the utility model embodiment, industrial computer is selected and is adopted UNO-5083 Series P entium M built-in industrial control machine.
In the utility model embodiment, wireless communication module adopts H6500 series wireless communication system.
As shown in Figure 3, voltage transformer (VT), current transformer, baroceptor, digital sound level meter, the output terminal of insulation tester is connected respectively to input end AIN0～AIN4 of A/D converter TLC2044, the output terminal EOC of A/D converter TLC2044, CLK, DIN, DOUT is connected respectively to the P10 of single-chip microcomputer, P11, P12, P13, 10 pins (RXD) of single-chip microcomputer CS8051, 11 pins (TXD) are connected with the T2in pin with the R2out pin of translation circuit MAX232, the input end of industrial computer input end and wireless communication module successively with single-chip microcomputer output terminal P01, P00 connects, the electric information of power distribution cabinet carries out synchronized sampling, maintenance, A/D conversion via corresponding device by sampling A/D chip, become digital signal, sending into single-chip microcomputer calculates and the data processing, be connected with industrial computer and data are delivered to transport module by communication interface, for ready with the remote dispatching communication.
Power distribution cabinet physical strength forecast model predict the outcome with measured value more as shown in Figure 5, the power distribution cabinet of setting up predicts in mechanical Model To Describe Strength of Blended, the error of power distribution cabinet prediction physical strength is controlled at basically ± 6% within.
Claims (1)
1. a gas-insulated power distribution cabinet physical strength prediction unit, is characterized in that: comprise current sensor, voltage sensor, baroceptor, insulation tester, digital sound level meter, data acquisition chip, central processing unit, industrial computer and wireless communication module;
Wherein, five road input ends of described data acquisition chip connect the output terminal of current sensor, the output terminal of voltage sensor, the output terminal of baroceptor, the output terminal of insulation tester and the output terminal of digital sound level meter successively, the output terminal of data acquisition chip connects the input end of central processing unit, and the two-way output terminal of central processing unit connects the input end of industrial computer and the input end of wireless communication module successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203605558U CN203365117U (en) | 2013-06-21 | 2013-06-21 | Mechanical strength prediction device of gas-insulated power distribution cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203605558U CN203365117U (en) | 2013-06-21 | 2013-06-21 | Mechanical strength prediction device of gas-insulated power distribution cabinet |
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| Publication Number | Publication Date |
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| CN203365117U true CN203365117U (en) | 2013-12-25 |
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| CN2013203605558U Expired - Fee Related CN203365117U (en) | 2013-06-21 | 2013-06-21 | Mechanical strength prediction device of gas-insulated power distribution cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323225A (en) * | 2013-06-21 | 2013-09-25 | 国家电网公司 | Gas insulation power distribution cabinet mechanical strength prediction device and method |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323225A (en) * | 2013-06-21 | 2013-09-25 | 国家电网公司 | Gas insulation power distribution cabinet mechanical strength prediction device and method |
| CN103323225B (en) * | 2013-06-21 | 2015-05-27 | 国家电网公司 | Gas insulation power distribution cabinet mechanical strength prediction method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20170621 |