CN102237669A - Microprocessor-based line protection monitoring device - Google Patents
Microprocessor-based line protection monitoring device Download PDFInfo
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- CN102237669A CN102237669A CN2010101576015A CN201010157601A CN102237669A CN 102237669 A CN102237669 A CN 102237669A CN 2010101576015 A CN2010101576015 A CN 2010101576015A CN 201010157601 A CN201010157601 A CN 201010157601A CN 102237669 A CN102237669 A CN 102237669A
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Abstract
The invention discloses a microprocessor-based line protection monitoring device. A power module, a state quantity input module, a state quantity output module, an analogue input module, an analogue output module, a communication module and a display module are all connected with a master control unit module. The analogue input module realizes three-phase current, three-phase voltage and leakage input. The state quantity input module provides eight paths of passive node input. The device realizes the functions of high set definite-time overcurrent protection, low set definite-time overcurrent protection, low set inverse-time overcurrent protection, high set definite-time zero sequence overcurrent protection, low set definite-time zero sequence overcurrent protection and low set inverse-time zero sequence overcurrent protection, and can realize the overcurrent protection and zero sequence/single-phase grounding protection of different time delays from 0.1 second to 60 minutes by setting different parameters by the different protection functions, thereby fulfilling the aims of easily realizing inter-stage selective fit and improving the production automation degree of the whole system.
Description
Technical field
Computer line protection supervising device of the present invention relates to a kind of route protection monitoring technique field, the particularly protection of microcomputer type low-voltage circuit, monitoring, control technology field.
Background technology
Distribution line protection relates to the problem of Electrical Safety and electricity consumption reliability two aspects, is the core of whole distribution design.The distribution line protection design mistake will directly cause breaking out of fire or electric shock accidents in the electric equipment operation process, jeopardize personal safety.The multiselect of low-voltage circuit protection at present with plastic shell circuit breaker, fuse or or residual current circuit breaker, realize the protection of fast tripping protection and long delay, do not have the short time delay protection.Be difficult in this case realize that inter-stage optionally cooperates,, may cause the upper and lower level situation of tripping operation together, incident is magnified, cut off the circuit that can continue to produce, cause unnecessary economic loss in case single phase ground fault occurs.Circuit breaker can not provide on-the-spot operation real-time monitor signal, logout and operation note in addition, can not satisfy the requirement of modernization, automated production.
Summary of the invention
The deficiency that may magnify incident and can not provide scene detection operation information to satisfy automated production for the existence that overcomes existing system is provided, designs a kind of inter-stage of can realizing easily and optionally cooperate, improve the computer line protection supervising device of whole system automated production degree.Its technical scheme that adopts is: comprise the main control unit module, power module, the quantity of state input module, the quantity of state output module, the analog quantity input module, analog output module, communication module and display module are in interior structure, it is characterized in that: power module, the quantity of state input module, the quantity of state output module, the analog quantity input module, analog output module, communication module and display module all are connected with the main control unit module, the analog quantity input module is realized three-phase current, three-phase voltage and electric leakage input, the quantity of state input module provides the input of 8 road passive buses, the main control unit module realizes protection according to input signal, detect, functions such as record, quantity of state output module provide 4 tunnel warning tripping operations and control output; Analog output module realization analog signal becomes send 4-20mA signal output function.Defencive function can be realized the overcurrent protection and zero sequence (individual event ground connection) protection of 0.1s to 60 minute different delayed time by setting different parameters.The positive effect of implementing after this technology is: device can realize that defencive function has the high specified time overcurrent of setting; the low specified time overcurrent of setting; the low inverse-time overcurrent (nearly 7 kinds of inverse time lag curves are provided) of setting; the high specified time zero sequence overcurrent of setting; the low specified time zero sequence overcurrent of setting; the low inverse time lag zero sequence overcurrent (3 kinds of inverse time lag curves are provided) of setting; outside interlock; electric leakage (highly sensitive zero sequence specified time overcurrent) defencive function; the function of measuring has three-phase current; zero-sequence current; leakage current; three-phase voltage; active power; reactive power; controlled function has network remote control; switching value control; contactor control; management function has number of operations; operation note; the tripping alarm record; the displacement record; the function of display module has real time data to show; record queries; panel operation; adjust or inquiry unit definite value and parameter; defencive function can be realized the overcurrent protection and zero sequence (individual event ground connection) protection of 0.1s to 60 minute different delayed time by setting different parameters; communication function can realize " three is distant " function, is easy to realize that inter-stage optionally cooperates and improve the purpose of whole system automated production degree thereby reach.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein: 1-main control unit module, 2-communication module, 3-display module, 4-power module, 5-analog quantity input module, 6-analog output module, 7-quantity of state input module, 8-quantity of state output module;
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
See accompanying drawing 1; power module 4; quantity of state input module 7; quantity of state output module 8; analog quantity input module 5; analog output module 6; communication module 2 and display module 3 all are connected with main control unit module 1; power module 4 provides the power supply that needs for each module; main control unit module 1 is the core of device; to quantity of state input module 7; the input signal of analog quantity input module 5 carries out computing; logic analysis; to quantity of state output module 8; analog output module 6; communication module 2 and display module 3 send control or protection action; produce data record; display module 3 provides the man-machine interface of optimization; can inquire about all measurement data; record data; management data; and can inquire about and adjust various protection definite values and device parameter; communication module 2 provides different fieldbus modes; satisfy the different system requirement; analog quantity input module 5 has the voltage input; the electric current input; the electric leakage input; analog output module 6 provides multiple signal transmitting 4-20mA signal output; quantity of state input module 7 provides the input of 8 road passive buses; quantity of state output module 8 provides 4 tunnel warning tripping operations and control output, and power module 4 can insert friendship; direct current 220V power supply.
See accompanying drawing 1; analog quantity input module 5 and quantity of state input module 7 are issued main control unit module 1 to the signal of gathering; carry out operational analysis by main control unit module 1; sending instruction or information exports for analog output module 6 and quantity of state output module 8; analog output module 6 can change the electric quantity signal that the user needs into 4-20mA to be exported to long-range DCS or other table meters and shows or control; quantity of state output module 6 can be carried out tripping operation; report to the police; divide-shut brake control; the action of outlet such as remote control; finish to the control of circuit with to user's caution; power module 4 provides the power supply that needs for each module; configure the protection parameter of each inter-stage device, can realize easily that inter-stage optionally cooperates.Improve whole system automated production degree.
Claims (3)
1. computer line is protected supervising device; comprise the main control unit module; power module; the quantity of state input module; the quantity of state output module; the analog quantity input module; analog output module; communication module and display module are in interior structure; it is characterized in that: power module; the quantity of state input module; the quantity of state output module; the analog quantity input module; analog output module; communication module and display module all are connected with the main control unit module; the analog quantity input module is realized three-phase current; three-phase voltage and electric leakage input; the quantity of state input module provides the input of 8 road passive buses; the main control unit module realizes protection according to input signal; detect; writing function, quantity of state output module provide 4 tunnel warning tripping operations and control output.
2. computer line protection supervising device according to claim 1 is characterized in that: analog output module realization analog signal becomes send 4-20mA signal output function.
3. computer line protection supervising device according to claim 1 is characterized in that: defencive function can be realized the overcurrent protection and zero sequence (individual event ground connection) protection of 0.1s to 60 minute different delayed time by setting different parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101576015A CN102237669A (en) | 2010-04-27 | 2010-04-27 | Microprocessor-based line protection monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101576015A CN102237669A (en) | 2010-04-27 | 2010-04-27 | Microprocessor-based line protection monitoring device |
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| CN102237669A true CN102237669A (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101576015A Pending CN102237669A (en) | 2010-04-27 | 2010-04-27 | Microprocessor-based line protection monitoring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384061A (en) * | 2012-05-03 | 2013-11-06 | 上海华建电力设备股份有限公司 | Microcomputer line protection monitoring device |
| CN103855672A (en) * | 2012-11-30 | 2014-06-11 | 上海华建电力设备股份有限公司 | Residual current operation relay |
| CN104795793A (en) * | 2014-01-16 | 2015-07-22 | 上海神宇高科技发展有限公司 | Microcomputer motor protection monitoring device |
| CN104823118A (en) * | 2012-10-25 | 2015-08-05 | 三菱日立电力系统株式会社 | Plant monitoring device, plant monitoring program, and plant monitoring method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047084A (en) * | 2006-07-03 | 2007-10-03 | 浙江中凯电器有限公司 | Control device of intelligent control and protective switch electrical equipment |
| WO2008020713A1 (en) * | 2006-08-16 | 2008-02-21 | Bo-Kyeong Kim | Insulation monitoring system & insulation detecting method for electric power supply system |
| CN201294370Y (en) * | 2008-11-06 | 2009-08-19 | 保定市尤耐特电气有限公司 | Intelligent control protection and management device |
-
2010
- 2010-04-27 CN CN2010101576015A patent/CN102237669A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047084A (en) * | 2006-07-03 | 2007-10-03 | 浙江中凯电器有限公司 | Control device of intelligent control and protective switch electrical equipment |
| WO2008020713A1 (en) * | 2006-08-16 | 2008-02-21 | Bo-Kyeong Kim | Insulation monitoring system & insulation detecting method for electric power supply system |
| CN201294370Y (en) * | 2008-11-06 | 2009-08-19 | 保定市尤耐特电气有限公司 | Intelligent control protection and management device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384061A (en) * | 2012-05-03 | 2013-11-06 | 上海华建电力设备股份有限公司 | Microcomputer line protection monitoring device |
| CN104823118A (en) * | 2012-10-25 | 2015-08-05 | 三菱日立电力系统株式会社 | Plant monitoring device, plant monitoring program, and plant monitoring method |
| CN104823118B (en) * | 2012-10-25 | 2017-05-24 | 三菱日立电力系统株式会社 | Plant monitoring device, and plant monitoring method |
| CN103855672A (en) * | 2012-11-30 | 2014-06-11 | 上海华建电力设备股份有限公司 | Residual current operation relay |
| CN104795793A (en) * | 2014-01-16 | 2015-07-22 | 上海神宇高科技发展有限公司 | Microcomputer motor protection monitoring device |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |