CN103840564A - Remote control loop comprehensive misoperation-preventive locking device - Google Patents
Remote control loop comprehensive misoperation-preventive locking device Download PDFInfo
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- CN103840564A CN103840564A CN201410126788.0A CN201410126788A CN103840564A CN 103840564 A CN103840564 A CN 103840564A CN 201410126788 A CN201410126788 A CN 201410126788A CN 103840564 A CN103840564 A CN 103840564A
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Abstract
A remote control loop comprehensive misoperation-preventive locking device is characterized by comprising a single chip microcomputer, a remote control DC detection loop, a switching-on relay switching-on detection loop, a switching-on relay switching-off detection loop, a remote control block relay drive loop, and a block relay normally-closed contact induced in a substation automatic measurement and control device remote control loop. The phenomenon that the a remote automatic control system (like AVC and the like) repeatedly and remotely controls one breaker or one main transformer on-load voltage regulation tap switch within a short period is prevented, locking commands sent by a transformer substation communication gateway can be received, and a specific remote control loop is turned off, detection information of the remote control loop and operation state information of the device itself are transmitted to a local computer supervision and control system of a transformer substation and a scheduling master station, and remote cast and cancel commands sent by the transformer substation communication gateway can be received and executed. The remote control loop comprehensive misoperation-preventive locking device is simple in structure and reliable in work.
Description
Technical field
The present invention relates to a kind of electric system protection device, particularly a kind of remote control circuit Comprehensive Preventing misoperation locking device.
Background technology
At present, in electric power system, occurred that the transformer station's end primary equipment causing due to straighforward operation damages, band ground cutter closes the serious accidents such as disconnecting link, its reason is because the remote control circuit of automation of transformation substations measure and control device does not prevent the effective technology measure of remote control mistake outlet.In the remote control circuit that at present automation of transformation substations measure and control device adopts, anti-misoperation locking device is not set, therefore cannot ensures not occur similar main website end reactive voltage automatic regulating system (AVC) because in parameter arranges wrong short time, switched capacitor causes that capacitor scaling loss, band ground cutter close that disconnecting link causes that busbar grounding causes that full station has a power failure repeatedly, on-load drawing disconnecting link causes disconnecting link device damage, protection exception time-division to close circuit breaker to cause the misoperation faults such as equipment belt failure operation.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of reliable operation is provided, simple in structure, the remote control circuit Comprehensive Preventing misoperation locking device that can apply on automation of transformation substations measure and control device.
The object of the present invention is achieved like this: a kind of remote control circuit Comprehensive Preventing misoperation locking device, it is characterized in that it is detected loop, closed rear relay and close a floodgate detect that loop, the trip inspection survey time road of closing rear relay, remote controlled locking relay drive loop, the blocking relay length introduced is closed contact and formed in automation of transformation substations measure and control device remote control circuit by single-chip microcomputer, remote control direct current, detect loop and be connected in the IO4 port of single-chip microcomputer by resistance, LED, light every the remote control direct current connecting and composing; Close a floodgate and detect loop and be connected in the IO1 port of single-chip microcomputer every, the rear relay that closes that closes that rear relay actuation coil contact connects and composes by resistance, voltage stabilizing didoe, light; By resistance, voltage stabilizing didoe, light every, the IO2 port that closes rear relay trip inspection survey time road and be connected in single-chip microcomputer that closes that rear relay involution coil contact connects and composes; The remote controlled locking relay being connected and composed every, resistance, blocking relay by light drives loop to be connected in the IO3 port of single-chip microcomputer, and the length of blocking relay is closed in the remote control circuit of contact series connection access measure and control device; The one end, serial communication loop being made up of every circuit serial ports light is connected in RX1 and the TX1 port of single-chip microcomputer, and the other end in serial communication loop is connected with terminal server.
The VCC of described single-chip microcomputer and Gnd port are connected with voltage stabilizing circuit module.
Single-chip microcomputer closes the action situation of rear relay actuation coil and involution coil by IO port processing, gather and control input and the electriferous state that direct current sky is opened, and controls remote controlled locking relay.By serial ports and transformer station's gateway machine communication; to the detection information of remote dispatching main website and local monitoring system of electric substation transmission control loop and device itself; receive from the locking information of local monitoring system of electric substation, as: earth connection or grounding switch locking switch operation, protection exception locking breaker operator, in the short time, repeatedly jump and close this breaker operator of circuit breaker lock etc.1 single-chip microcomputer can be controlled many times remote control circuits in 1 interval, for example, adopt the line segregation of 1/2 wiring to have the 4 times control loops that amount to of 3 disconnecting links of 1 circuit breaker.
The present invention closes contact by the length that is connected in series blocking relay in remote control circuit, judges and prevent in distant place automation control system (as the AVC etc.) short time repeatedly the situation generation of 1 circuit breaker of straighforward operation or 1 main transformer on-load tap changer of remote regulating taking single-chip microcomputer as core by gathering point state that closes of remote control circuit in a period of time; The remote control circuit in automation measurement and control equipment is cut off in the locking order of sending by reception transformer substation communication gateway machine; Realize the remote monitoring warning function of remote control circuit by transmitting the detection information of remote control circuit and the running status of device body to Local Computer Supervisory System for Substations and scheduling station, and can receive and carry out a distant place that transformer substation communication gateway machine issues and throw and move back order, when device exits, remote control circuit normally uses.It is simple that it also has structural principle simultaneously, the feature of reliable operation.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is that the present invention accesses existing automation of transformation substations measure and control device remote control circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the present embodiment is taking the blocking function of realizing 1 remote control circuit as example.
Single-chip microcomputer IC1 closes the action situation of rear relay KKJ actuation coil DZ by IO1 port processing, close the action situation of rear relay KKJ involution coil FG by the collection of IO2 mouth, gather by IO4 input and the electriferous state that remote control direct current sky is opened, control remote controlled locking relay BSJ by IO3, adopt serial ports and transformer station's gateway machine communication, to the detection information of the local supervisory control system of transformer station and remote dispatching main website transmission remote control circuit and device itself, receive the locking information from the local supervisory control system of transformer station.
Remote control direct current detects loop and forms every OC4 by being connected in resistance R 1, resistance R 2, LED 1, voltage stabilizing didoe D3, the light that direct current sky opens between the lead-out terminal of SK the two poles of the earth; R1 and R2 are for current limliting; LED1 opens and drops into and charged state for outer aobvious remote control direct current sky; OC4 gathers State-output to the IO4 port of single-chip microcomputer, D3 is used for preventing overvoltage and protects OC4.
Voltage stabilizing circuit module IC2 adopts the 220V UPS power supply in transformer station, for 0V earth potential, the output of+5V supply voltage, the output of+24V supply voltage are provided in installing, wherein+5V power supply has the loop power supply of electrical connection for single-chip microcomputer and with single-chip microcomputer, and+24V power supply drives the power supply of loop and all the other external loops for remote controlled locking relay.
Close rear relay close a floodgate detect loop by resistance R 3, resistance R 6, light every OC1, voltage stabilizing didoe D1, close rear relay actuation coil contact KKJ-DZ and form; R3, R6 play metering function; D1 is used for preventing overvoltage and protects OC1; in the time that combined floodgate guidance command is carried out; close rear relay actuation coil contact KKJ-DZ closure; light, every OC1 conducting, transmits remote control switching signal to single-chip microcomputer.
Close rear relay trip inspection survey time routing resistance R4, resistance R 7, voltage stabilizing didoe D2, light every OC2, close rear relay involution coil contact KKJ-FG composition; R4, R7 play metering function; D2 is used for preventing overvoltage and protects OC2; in the time that separating brake guidance command is carried out; close rear relay involution coil contact KKJ-FG closure; light, every OC2 conducting, transmits remote control sub-gate signal to single-chip microcomputer.
Remote controlled locking relay drives loop to be made up of every OC3, blocking relay BSJ resistance R 5, resistance R 8, light, the length of blocking relay is closed in the remote control circuit of contact BSJ1 series connection access measure and control device (referring to Fig. 2), when single-chip microcomputer is exported high level by IO3 port, light is every OC3 conducting, blocking relay BSJ excitation actuating, BSJ1 length is closed contact and is opened, thereby disconnects the power supply of remote control circuit.
Serial communication loop is made up of every IC circuit 3 serial ports light, and IC3 one end is connected in serial ports RX1 and the TX1 of single-chip microcomputer, and one end is connected in terminal server, plays electric signal isolation effect.
By terminal server, transformer substation communication gateway machine can be communicated by letter with many playscripts with stage directions contrive equipment, transformer substation communication gateway machine also with the local supervisory control system of transformer station and remote dispatching master station communication.
The course of work of the present invention is, single-chip microcomputer by close rear relay close a floodgate detect loop with close rear relay trip inspection survey time road gather and judge remote control circuit in a period of time close the whether out-of-limit value of point number of times, be to drive loop open BSJ1 and remote control circuit is disconnected by remote controlled locking relay, occur with the situation of avoiding in distant place automation control system (as the AVC etc.) short time repeatedly 1 circuit breaker of remote control or 1 main transformer on-load tap changer of remote regulating.The locking order that single-chip microcomputer can be sent according to transformer substation communication gateway machine drives loop to disconnect specific remote control circuit by remote controlled locking relay.Single-chip microcomputer transmits automation measurement and control equipment 1 interval in the detection information of multiple remote control circuits and the running state information of device body every circuit to Local Computer Supervisory System for Substations and scheduling station by serial ports light and realizes remote control circuit remote monitoring warning function.The distant place that single-chip microcomputer also can operation dispatching main website issues by transformer substation communication gateway machine is thrown and is moved back order, and when device exits, BSJ1 remains closed.
The present invention can be arranged on automation measurement and control equipment panel, is convenient to secondary circuit wiring.
As shown in Figure 2, the present invention has increased the long close node BSJ1 of 1 blocking relay on automation measurement and control equipment remote control circuit, and in the time of described blocking relay action, BSJ1 contact disconnects, and remote control circuit disconnects at once, thereby realizes the object of locked remote control operation.
Claims (2)
1. a remote control circuit Comprehensive Preventing misoperation locking device, it is characterized in that it is detected loop, closed rear relay and close a floodgate detect that loop, the trip inspection survey time road of closing rear relay, remote controlled locking relay drive loop, the blocking relay length introduced is closed contact and formed in automation of transformation substations measure and control device remote control circuit by single-chip microcomputer, remote control direct current, detect loop and be connected in the IO4 port of single-chip microcomputer by resistance, LED, light every the remote control direct current connecting and composing; Close a floodgate and detect loop and be connected in the IO1 port of single-chip microcomputer every, the rear relay that closes that closes that rear relay actuation coil contact connects and composes by resistance, voltage stabilizing didoe, light; By resistance, voltage stabilizing didoe, light every, the IO2 port that closes rear relay trip inspection survey time road and be connected in single-chip microcomputer that closes that rear relay involution coil contact connects and composes; The remote controlled locking relay being connected and composed every, resistance, blocking relay by light drives loop to be connected in the IO3 port of single-chip microcomputer, and the length of blocking relay is closed in the remote control circuit of contact series connection access measure and control device; The one end, serial communication loop being made up of every circuit serial ports light is connected in RX1 and the TX1 port of single-chip microcomputer, and the other end in serial communication loop is connected with terminal server.
2. remote control circuit Comprehensive Preventing misoperation locking device according to claim 1, is characterized in that VCC and the Gnd port of described single-chip microcomputer is connected with voltage stabilizing circuit module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126788.0A CN103840564A (en) | 2014-04-01 | 2014-04-01 | Remote control loop comprehensive misoperation-preventive locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126788.0A CN103840564A (en) | 2014-04-01 | 2014-04-01 | Remote control loop comprehensive misoperation-preventive locking device |
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| CN103840564A true CN103840564A (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410126788.0A Pending CN103840564A (en) | 2014-04-01 | 2014-04-01 | Remote control loop comprehensive misoperation-preventive locking device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026405A (en) * | 2016-07-19 | 2016-10-12 | 国电南瑞科技股份有限公司 | Relay protection on-line monitoring and analyzing system based on EMS system |
| CN106207663A (en) * | 2016-09-12 | 2016-12-07 | 国网辽宁省电力有限公司大连供电公司 | A kind of electron key jack type Multiple-protection socket |
| CN109450088A (en) * | 2018-11-05 | 2019-03-08 | 国网山西省电力公司忻州供电公司 | Anti- school and monitoring method for fail safe system for transformer substation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287948A (en) * | 1988-09-26 | 1990-03-28 | Hitachi Ltd | Remote monitoring and control equipment |
| CN2664143Y (en) * | 2003-11-11 | 2004-12-15 | 江苏苏源舜达自动化设备有限公司 | Electric misoperation preventing blocking device |
| CN101257224A (en) * | 2008-04-17 | 2008-09-03 | 国电南瑞科技股份有限公司 | Technique for realizing transforming plant anti mis-closedown function in transforming plant observe and control apparatus |
| CN101951032A (en) * | 2010-10-14 | 2011-01-19 | 北京四方继保自动化股份有限公司 | Method of realizing dynamic error-prevention function of transformer substation by monitoring and controlling unit |
-
2014
- 2014-04-01 CN CN201410126788.0A patent/CN103840564A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287948A (en) * | 1988-09-26 | 1990-03-28 | Hitachi Ltd | Remote monitoring and control equipment |
| CN2664143Y (en) * | 2003-11-11 | 2004-12-15 | 江苏苏源舜达自动化设备有限公司 | Electric misoperation preventing blocking device |
| CN101257224A (en) * | 2008-04-17 | 2008-09-03 | 国电南瑞科技股份有限公司 | Technique for realizing transforming plant anti mis-closedown function in transforming plant observe and control apparatus |
| CN101951032A (en) * | 2010-10-14 | 2011-01-19 | 北京四方继保自动化股份有限公司 | Method of realizing dynamic error-prevention function of transformer substation by monitoring and controlling unit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026405A (en) * | 2016-07-19 | 2016-10-12 | 国电南瑞科技股份有限公司 | Relay protection on-line monitoring and analyzing system based on EMS system |
| CN106026405B (en) * | 2016-07-19 | 2018-08-14 | 国电南瑞科技股份有限公司 | Relay protection in-service monitoring based on EMS system and analysis system |
| CN106207663A (en) * | 2016-09-12 | 2016-12-07 | 国网辽宁省电力有限公司大连供电公司 | A kind of electron key jack type Multiple-protection socket |
| CN106207663B (en) * | 2016-09-12 | 2018-08-17 | 国网辽宁省电力有限公司大连供电公司 | A kind of electron key jack type Multiple-protection socket |
| CN109450088A (en) * | 2018-11-05 | 2019-03-08 | 国网山西省电力公司忻州供电公司 | Anti- school and monitoring method for fail safe system for transformer substation |
| CN109450088B (en) * | 2018-11-05 | 2022-03-29 | 国网山西省电力公司忻州供电公司 | Anti-calibration and monitoring method for transformer substation five-prevention system |
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Application publication date: 20140604 |