CN105610079A - Microcomputer anti-misoperation locking system and method for high-voltage switch cabinet of substation - Google Patents
Microcomputer anti-misoperation locking system and method for high-voltage switch cabinet of substation Download PDFInfo
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- CN105610079A CN105610079A CN201610090556.3A CN201610090556A CN105610079A CN 105610079 A CN105610079 A CN 105610079A CN 201610090556 A CN201610090556 A CN 201610090556A CN 105610079 A CN105610079 A CN 105610079A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/24—Shutters or guards
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- Power Engineering (AREA)
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a microcomputer anti-misoperation locking system and method for a high-voltage switch cabinet of a substation. The high-voltage switch cabinet of the substation comprises a main transformer switch cabinet, a main transformer switch blade cabinet, a capacitor switch cabinet, a grounding variable switch cabinet, a female branch switch cabinet, a female branch switch blade cabinet, a bus voltage transformer cabinet and a line switch cabinet. According to the microcomputer anti-misoperation locking system for the high-voltage switch cabinet, five-prevention locks with an anti-misoperation locking function are added to a front cabinet door, a rear cabinet door, a trolley shaking hole and a grounding switch blade of the line switch cabinet respectively; and the five-prevention locks with the anti-misoperation locking function are added to the front cabinet doors, the rear cabinet doors and the trolley shaking holes of the main transformer switch cabinet, the main transformer switch blade cabinet, the capacitor switch cabinet, the grounding variable switch cabinet, the female branch switch cabinet, the female branch switch blade cabinet and the bus voltage transformer cabinet respectively. According to the method, operating personnel make out an invoice according to a dispatching command; the drawn operation invoice is checked and signed by a shift supervisor and a deputy shift supervisor; and switching operation of changing a stand-by line of the high-voltage switch cabinet into switch and line maintenance from operation can be carried out.
Description
Technical field
What the present invention relates to is a kind of transformer station high-tension switch cabinet microcomputer misoperation prevention locking system and method, belongs to power equipment Work tool field.
Technical background
In modern society; electric power is being played the part of and important role in national economy, national security, people's daily life; as electrical equipment important in power system; high-tension switch cabinet is generally applied on the converting equipment of 10～35kV; control for the conveying of electric energy and protection, for user provides the electric energy of high-quality. Along with the raising day by day requiring with power supply reliability that develops rapidly of Substation Automation System, switch cubicle is also more outstanding in the effect of transformer station. Therefore, how to ensure electric substation's inner high voltage switch cubicle safe and reliable operation, become the vital task of power system power transformation O&M work.
It is the fundamental measure that power generation ensures the person, electrical network, device security that high-tension switch cabinet is installed misoperation-proof locking device. Specify according to " State Grid Corporation of China's electric power safety working regulation ": high-tension switch cabinet should be installed perfect misoperation-proof locking device, and have and improve reliable anti mis-closedown function, what do not have anti mis-closedown function should install mechanical lock additional. But still some switch cubicle does not install perfect misoperation-proof locking device additional at present, the anti mis-closedown function that only relies on switch cubicle to carry, the door of switch cabinet even having is only by making to be screwed to prevent being strayed into of staff. Check maloperation and human casualty accident that this year, electric power enterprise occurred, because switch cubicle misoperation-proof locking device imperfection, accident proportion unreliable or that release causes are without authorization up to 60%.
For the person and the substantial equipment accident that effectively prevent that high-tension switch cabinet maloperation from causing, Guo Wang company has formulated a series of anti-misoperation administrative provisions and error-proof device management method, but in actual production real work, switch cubicle misoperation fault or frequent generation.
Summary of the invention
The object of the invention is to overcome the deficiency that existing Measures of Preventing Miss Block Function for HV Switch Cabinet exists, provide a kind of simple in structure, use easy to operately, can effectively reduce the transformer station's high-tension switch cabinet microcomputer misoperation prevention locking system and method that causes misoperation fault probability of happening because of switch cubicle self anti mis-closedown function imperfection.
The object of the invention is to complete by following technical solution, a kind of transformer station high-tension switch cabinet microcomputer misoperation prevention locking system, described transformer station's high-tension switch cabinet comprises that main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection become switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus pressure change cabinet, line switching cabinet; Described high-tension switch cabinet microcomputer misoperation prevention locking system comprises: shake hole, earthing switch blade place at front cabinet door, rear cabinet door, the dolly of line switching cabinet and install additional respectively and have the five anti-lock of anti mis-closedown function; Becoming switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus at main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection presses the front cabinet door, rear cabinet door, the dolly that become cabinet to shake hole place to install additional respectively and have the five anti-lock of anti mis-closedown function.
As preferably: described high-tension switch cabinet comprises 10kV switch cubicle, 20kV switch cubicle, 35kV switch cubicle: described high-tension switch cabinet five anti-lock for realizing: (1) prevents that mistake point, mistake combination switch, (2) from preventing that on-load from drawing, closing isolation switch, 3) prevent from preventing that with cable address (closing) earth connection (grounding switch), (4) line with ground (grounding switch) combination switch (isolation switch) and (5) from preventing " five is anti-" function of mistakenly entering charged chamber.
A microcomputer misoperation prevention locking method of utilizing described transformer station's high-tension switch cabinet microcomputer misoperation prevention locking system to carry out, described microcomputer misoperation prevention locking method comprises:
First, operations staff makes out an invoice according to traffic order, circuit stand-by high-tension switch cabinet is changed into the operation order of line maintenance by operation, specifically comprises following operation:
1) pull open the switch of inactive line;
2) check the definite open position of inactive line switch;
3) by inactive line switch cart by operating position shake to testing position fix, and check;
4) take off the poor output clamping LPxx of mother of inactive line switch, and check;
5) inspection inactive line switch is determined cold standby;
6) the bus differential protection change-over switch QB of high-tension switch cabinet being switched to female poor giving up the throne puts;
7) check on the differential relaying panel of high-tension switch cabinet BP-2B device interface show differentially exit, differential locking exits;
8) with 4 short circuit screws, the 648 wiretaps mothers of transformer station are differed to CT terminal 3SD rheology side short circuit groundings;
9) remove the female poor CT terminal 3SD of transformer station's 648 wiretaps and tap into 4 of female poor loop connecting screws;
10) bus differential protection attonity and the abnormal signal of inspection high-tension switch cabinet;
11) the bus differential protection change-over switch QB of high-tension switch cabinet is switched to female poor position of throwing;
12) on the differential relaying panel of inspection high-tension switch cabinet, BP-2B device interface shows that differential input, differential locking drop into;
13) take off inactive line switch cart secondary inserting piece;
14) inactive line switch cart is pulled to cabinet by testing position fixing outward, and checks;
15) shake to operating position after circuit electricity check trolley being extrapolated to testing position by cabinet at inactive line switch cubicle place and fix, and check;
16) in the static contact place three-phase electrical verification of circuit electricity check trolley line side, identify after true no-voltage, circuit electricity check trolley is shaken to testing position post-tensioning fixing to cabinet by operating position outward, and check;
17) the inactive line earthing switch blade that closes, and check;
18) the air switch 3DK2 of disconnection inactive line switch control power supply;
The operation order of drawing up, after and signature errorless on the occasion of the long examination & verification of, value, and after positive order is sent out in scheduling, can carry out the stand-by circuit of high-tension switch cabinet and changed into by operation the grid switching operation of switch and line maintenance.
As preferably: before switch cubicle grid switching operation is carried out, operating personnel are according to operating procedure graphics aided in the five-preventing system of backstage, the reasonability of verification operation step;
While carrying out local operation, after completing, graphics aided imports computer key into, operating personnel carry out item by item according to operation order content, when execution is violated to the content of operation of anti-misoperation locking logic, computer key is realized forced blocking, send alarm and information simultaneously, the correct executable operations of guiding operating personnel, thus reach the object that prevents maloperation;
When straighforward operation, operating personnel are sent and allow signal to monitoring system by main frame, untie the romote controlled locking of corresponding node, and operation is finished, and main frame is updated the equipment state to current virtual condition.
As preferably: according to preventing misoperation of high-tension switch cabinet code requirement, the inactive line of high-tension switch cabinet changes switch and line maintenance into by operation, needs by the once-through operation of five anti-checkings in operation order, specifically comprises following 4 steps:
1) pull open the switch of inactive line;
2) inactive line switch cart is shaken to testing position and fixed by operating position, and check;
3) inactive line switch cart is pulled to cabinet by testing position fixing outward, and checks;
4) the inactive line earthing switch blade that closes, and check;
The 1st) in step operation, through five-preventing system checking, can help operations staff's checking apparatus title, avoid the generation of operations staff at the backstage mistake point pernicious misoperation fault of other this class of interval switch;
The 2nd) in step operation, shaking hole by the switch cubicle dolly to high-tension switch cabinet inactive line installs five anti-lock, can effectively avoid staff's mistakenly entering charged chamber, in switch co-bit situation, switch cart be shaken to the generation of testing position misoperation fault by operating position;
The 3rd) in step operation, install five anti-lock by the switch cubicle front cabinet door to high-tension switch cabinet inactive line, can effectively avoid staff because of operating pressure large, absent minded, in charged situation or switch cart not in the time of testing position, open the generation of this class accident of switch cubicle front cabinet door;
The 4th) in step operation, install five anti-lockly by the switch cubicle line-to-ground plug-in strip to high-tension switch cabinet inactive line, can effectively avoid staff's charged co-grounding switch or switch cart in the time of testing position, not to close the generation of the pernicious misoperation fault of this class of grounding switch.
Compared with prior art, the present invention the is perfect anti mis-closedown function of high-tension switch cabinet, has the advantages such as reduce misoperation fault probability of happening and effective guarantee operation, maintainer's work safety and grid equipment be safe and reliable greatly.
Brief description of the drawings
Fig. 1 is that a kind of 35kV line switching of the present invention cabinet shakes hole at front cabinet door, rear Over-The-Counter door, rear lower cabinet door, dolly, line-to-ground plug-in strip place installs five anti-lock anti-misoperation locking device schematic diagrames additional.
Fig. 2 is that a kind of 35kV switch cubicle except line switching cabinet of the present invention shakes hole at front cabinet door, rear Over-The-Counter door, rear lower cabinet door, dolly and installs five anti-lock anti-misoperation locking device schematic diagrames additional.
Fig. 3 is that the another kind of 20kV line switching of the present invention cabinet shakes hole at front middle cabinet door, front lower cabinet door, rear Over-The-Counter door, rear lower cabinet door, dolly, line-to-ground plug-in strip place installs five anti-lock misoperation-proof locking device schematic diagrames additional.
Fig. 4 is that the 20kV switch cubicle of another kind of the present invention except line switching cabinet shakes hole at front middle cabinet door, front lower cabinet door, rear Over-The-Counter door, rear lower cabinet door, dolly and install five anti-lock misoperation-proof locking device schematic diagrames additional.
Fig. 5 is that the present invention has that a kind of 10kV line switching cabinet shakes hole at front cabinet door, rear Over-The-Counter door, rear lower cabinet door, dolly, line-to-ground plug-in strip place installs five anti-lock misoperation-proof locking device schematic diagrames additional.
Fig. 6 is that the present invention has a kind of 10kV switch cubicle except line switching cabinet to shake hole at front cabinet door, rear Over-The-Counter door, rear lower cabinet door, dolly to install five anti-lock misoperation-proof locking device schematic diagrames additional.
Fig. 7 installs the five anti-lock stand-by 750 switch cubicle schematic diagrames of 35kV additional.
Detailed description of the invention
A kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking system, described transformer station's high-tension switch cabinet comprises that main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection become switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus pressure change cabinet, line switching cabinet; Described high-tension switch cabinet microcomputer misoperation prevention locking system comprises: shake hole, earthing switch blade place at front cabinet door, rear cabinet door, the dolly of line switching cabinet and install additional respectively and have the five anti-lock of anti mis-closedown function; Becoming switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus at main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection presses the front cabinet door, rear cabinet door, the dolly that become cabinet to shake hole place to install additional respectively and have the five anti-lock of anti mis-closedown function.
Described high-tension switch cabinet comprises 10kV switch cubicle, 20kV switch cubicle, 35kV switch cubicle: described high-tension switch cabinet five anti-lock for realizing: (1) prevents that mistake point, mistake combination switch, (2) from preventing that on-load from drawing, closing isolation switch, 3) prevent from preventing that with cable address (closing) earth connection (grounding switch), (4) line with ground (grounding switch) combination switch (isolation switch) and (5) from preventing " five is anti-" function of mistakenly entering charged chamber.
Below in conjunction with accompanying drawing, the present invention will be described in detail: shown in Fig. 1, a kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking method, front cabinet door, the dolly that it is included in 35kV line switching cabinet shakes hole, line-to-ground plug-in strip, rear Over-The-Counter door, rear lower cabinet door and installs additional and have the five anti-lock of anti-misoperation function; Described five anti-lockly comprise following anti-misoperation function: (1) prevents mistake point, mistake combination switch; (2) prevent that on-load from drawing, closing isolation switch; (3) prevent charged co-grounding switch; (4) prevent that disconnecting link with ground from closing isolation switch; (5) prevent mistakenly entering charged chamber.
Shown in Fig. 2, a kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking method, it is included in 35kV main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection and becomes switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus and press the front cabinet door, the dolly that become cabinet to shake hole, rear Over-The-Counter door, rear lower cabinet door to install additional and have the five anti-lock of anti-misoperation function; Described five anti-lockly comprise following anti-misoperation function: (1) prevents mistake point, mistake combination switch; (2) prevent that on-load from drawing, closing isolation switch; 3) prevent from being with cable address (closing) earth connection (grounding switch); (4) prevent line with ground (grounding switch) combination switch (isolation switch); (5) prevent mistakenly entering charged chamber.
Shown in Fig. 3, a kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking method, it is included in the front middle cabinet door of 20kV line switching cabinet, front lower cabinet door, dolly and shakes hole, line-to-ground plug-in strip, rear Over-The-Counter door, rear lower cabinet door and install additional and have the five anti-lock of anti mis-closedown function; The anti mis-closedown function of five described anti-lock correspondences has: (1) prevents that mistake from dividing, mistake combination switch; (2) prevent that on-load from drawing, closing isolation switch; (3) prevent charged co-grounding switch; (4) prevent that disconnecting link with ground from closing isolation switch; (5) prevent mistakenly entering charged chamber.
Shown in Fig. 4, a kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking method, it is included in 20kV main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection and becomes switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus and press the front middle cabinet door, front lower cabinet door, the dolly that become cabinet to shake hole, rear Over-The-Counter door, rear lower cabinet door to install additional and have the five anti-lock of anti-misoperation function; Described five anti-lockly comprise following anti-misoperation function: (1) prevents mistake point, mistake combination switch; (2) prevent that on-load from drawing, closing isolation switch; 3) prevent from being with cable address (closing) earth connection (grounding switch); (4) prevent line with ground (grounding switch) combination switch (isolation switch); (5) prevent mistakenly entering charged chamber.
Shown in Fig. 5, a kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking method, front cabinet door, the dolly that it is included in 10kV line switching cabinet shakes hole, line-to-ground plug-in strip, rear Over-The-Counter door, rear lower cabinet door and installs additional and have the five anti-lock of anti-misoperation function; Described five anti-lockly comprise following anti-misoperation function: (1) prevents mistake point, mistake combination switch; (2) prevent that on-load from drawing, closing isolation switch; (3) prevent charged co-grounding switch; (4) prevent that disconnecting link with ground from closing isolation switch; (5) prevent mistakenly entering charged chamber.
Shown in Fig. 6, a kind of transformer station of the present invention high-tension switch cabinet microcomputer misoperation prevention locking method, it is included in 10kV main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection and becomes switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus and press the front cabinet door, the dolly that become cabinet to shake hole, rear Over-The-Counter door, rear lower cabinet door to install additional and have the five anti-lock of anti-misoperation function; Described five anti-lockly comprise following anti-misoperation function: (1) prevents mistake point, mistake combination switch; (2) prevent that on-load from drawing, closing isolation switch; 3) prevent from being with cable address (closing) earth connection (grounding switch); (4) prevent line with ground (grounding switch) combination switch (isolation switch); (5) prevent mistakenly entering charged chamber.
Embodiment:
Because producing actual needs, existing according to scheduling requirement, change stand-by 750 circuits of a 35kV of certain electric substation into switch and line maintenance by operation. By adopting the inventive method to install five additional anti-lock in the situation that at switch cubicle, change stand-by 35kV 750 circuits into switch and line maintenance by operation below.
Fig. 7 installs the five anti-lock stand-by 750 switch cubicle schematic diagrames of 35kV additional, and front cabinet door, the dolly that it is included in stand-by 750 switch cubicles of 35kV shakes hole, stand-by 750 line-to-ground plug-in strips, rear Over-The-Counter door, rear lower cabinet door and install additional and have the five anti-lock of anti-misoperation function.
First, operations staff makes out an invoice according to traffic order, and the operation order that stand-by 750 circuits of 35kV change line maintenance into by operation is:
1) pull open stand-by 750 wiretaps;
2) check that stand-by 750 wiretaps are really at open position;
3) stand-by 750 wiretap dollies are shaken to testing position and fixed by operating position, and check;
4) take off the female poor output clamping LPxx of stand-by 750 wiretaps, and check;
5) check that stand-by 750 wiretaps are really at cold standby;
6) 35kV bus differential protection change-over switch QB being switched to female poor giving up the throne puts;
7) check on 35kV differential relaying panel BP-2B device interface show differentially exit, differential locking exits;
8) with 4 short circuit screws, the south of a city 648 wiretaps mothers are differed to CT terminal 3SD rheology side short circuit groundings;
9) remove the female poor CT terminal 3SD of the south of a city 648 wiretaps and tap into 4 of female poor loop connecting screws;
10) check 35kV bus differential protection attonity and abnormal signal;
11) 35kV bus differential protection change-over switch QB is switched to female poor position of throwing;
12) check that on 35kV differential relaying panel, BP-2B device interface shows that differential input, differential locking drop into;
13) take off stand-by 750 wiretap dolly secondary inserting pieces;
14) stand-by 750 wiretap dollies are pulled to cabinet by testing position fixing outward, and check;
15) after stand-by 750 wiretap cabinet places are extrapolated to testing position by 35kV circuit electricity check trolley by cabinet, shake to operating position and fix, and check;
16) in the static contact place three-phase electrical verification of 35kV circuit electricity check trolley line side, identify after true no-voltage, 35kV circuit electricity check trolley is shaken to testing position post-tensioning fixing to cabinet by operating position outward, and check;
17) the stand-by 750 line line-to-ground plug-in strips that close, and check;
18) disconnect stand-by 750 wiretap control power supply air switch 3DK2;
The operation order of drawing up, after and signature errorless on the occasion of the long examination & verification of, value, and after positive order is sent out in scheduling, can carry out stand-by 750 circuits of 35kV and changed into by operation the grid switching operation of switch and line maintenance.
Before switch cubicle grid switching operation is carried out, operating personnel are according to operating procedure graphics aided in the five-preventing system of backstage, the reasonability of verification operation step. While carrying out local operation, after completing, graphics aided imports computer key into, operating personnel carry out item by item according to operation order content, when execution is violated to the content of operation of anti-misoperation locking logic, computer key is realized forced blocking, send alarm and information simultaneously, the correct executable operations of guiding operating personnel, thus reach the object that prevents maloperation. When straighforward operation, operating personnel are sent and allow signal to monitoring system by main frame, untie the romote controlled locking of corresponding node, and operation is finished, and main frame is updated the equipment state to current virtual condition.
According to preventing misoperation of high-tension switch cabinet code requirement, stand-by 750 circuits of 35kV change switch and line maintenance into by operation, and in operation order, needing has following 4 steps by the once-through operation of five anti-checkings:
1) pull open stand-by 750 wiretaps
2) stand-by 750 wiretap dollies are shaken to testing position and fixed by operating position, and check
3) stand-by 750 wiretap dollies are pulled to cabinet by testing position fixing outward, and check
4) the stand-by 750 line line-to-ground plug-in strips that close, and check
The 1st) in step operation, through five-preventing system checking, can help operations staff's checking apparatus title, avoid the generation of operations staff at the backstage mistake point pernicious misoperation fault of other this class of interval switch;
The 2nd) step operation, installs five anti-lockly by the stand-by 750 switch cubicle dollies of 35kV being shaken to hole, can effectively avoid staff's mistakenly entering charged chamber, in switch co-bit situation, switch cart is shaken to the generation of testing position misoperation fault by operating position;
The 3rd) step operation, anti-lock by the stand-by 750 switch cubicle front cabinet doors of 35kV being installed to five, can effectively avoid staff because of operating pressure large, absent minded, in charged situation or switch cart not in the time of testing position, open the generation of this class accident of switch cubicle front cabinet door;
The 4th) step operation, anti-lock by the stand-by 750 switch cubicle line-to-ground plug-in strips of 35kV being installed to five, can effectively avoid staff's charged co-grounding switch or switch cart in the time of testing position, not to close the generation of the pernicious misoperation fault of this class of grounding switch.
In above grid switching operation, shaking hole, line-to-ground plug-in strip by the front cabinet door to stand-by 750 switch cubicles of 35kV, dolly installs additional and has the five anti-lock of anti mis-closedown function, can greatly reduce misoperation fault probability of happening, thereby ensure the safety of operations staff and grid equipment.
Meanwhile, anti-lock by install five at the rear Over-The-Counter door of stand-by 750 switch cubicles of 35kV, rear lower cabinet door, can effectively avoid maintainer in opening switch cabinet rear cabinet door generation accident of human electric shock's the generation without authorization charged in the situation that of stand-by 750 circuits of 35kV.
Other embodiments of the invention can replace stand-by 750 switch cubicles of 35kV with 10kV switch cubicle, 20kV switch cubicle.
Claims (5)
1. transformer station's high-tension switch cabinet microcomputer misoperation prevention locking system, described transformer station's high-tension switch cabinet comprises that main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection become switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus pressure change cabinet, line switching cabinet; It is characterized in that described high-tension switch cabinet microcomputer misoperation prevention locking system comprises: shake hole, earthing switch blade place at front cabinet door, rear cabinet door, the dolly of line switching cabinet and install additional respectively and there is the five anti-lock of anti mis-closedown function; Becoming switch cubicle, mother stock switch cubicle, mother stock plug-in strip cabinet, bus at main transformer switch cabinet, main transformer plug-in strip cabinet, capacitor switch cabinet, ground connection presses the front cabinet door, rear cabinet door, the dolly that become cabinet to shake hole place to install additional respectively and have the five anti-lock of anti mis-closedown function.
2. transformer station according to claim 1 high-tension switch cabinet microcomputer misoperation prevention locking system, it is characterized in that described high-tension switch cabinet comprises 10kV switch cubicle, 20kV switch cubicle, 35kV switch cubicle: described high-tension switch cabinet five anti-lock for realizing: (1) prevents mistake point, mistake combination switch, (2) prevent that on-load from drawing, close isolation switch, 3) prevent from being with cable address (closing) earth connection (grounding switch), (4) prevent that line with ground (grounding switch) combination switch (isolation switch) and (5) from preventing " five is anti-" function of mistakenly entering charged chamber.
3. a microcomputer misoperation prevention locking method of utilizing the transformer station's high-tension switch cabinet microcomputer misoperation prevention locking system described in claim 1 or 2 to carry out, is characterized in that described microcomputer misoperation prevention locking method comprises:
First, operations staff makes out an invoice according to traffic order, circuit stand-by high-tension switch cabinet is changed into the operation order of line maintenance by operation, specifically comprises following operation:
1) pull open the switch of inactive line;
2) check the definite open position of inactive line switch;
3) by inactive line switch cart by operating position shake to testing position fix, and check;
4) take off the poor output clamping LPxx of mother of inactive line switch, and check;
5) inspection inactive line switch is determined cold standby;
6) the bus differential protection change-over switch QB of high-tension switch cabinet being switched to female poor giving up the throne puts;
7) check on the differential relaying panel of high-tension switch cabinet BP-2B device interface show differentially exit, differential locking exits;
8) with 4 short circuit screws, the 648 wiretaps mothers of transformer station are differed to CT terminal 3SD rheology side short circuit groundings;
9) remove the female poor CT terminal 3SD of transformer station's 648 wiretaps and tap into 4 of female poor loop connecting screws;
10) bus differential protection attonity and the abnormal signal of inspection high-tension switch cabinet;
11) the bus differential protection change-over switch QB of high-tension switch cabinet is switched to female poor position of throwing;
12) on the differential relaying panel of inspection high-tension switch cabinet, BP-2B device interface shows that differential input, differential locking drop into;
13) take off inactive line switch cart secondary inserting piece;
14) inactive line switch cart is pulled to cabinet by testing position fixing outward, and checks;
15) shake to operating position after circuit electricity check trolley being extrapolated to testing position by cabinet at inactive line switch cubicle place and fix, and check;
16) in the static contact place three-phase electrical verification of circuit electricity check trolley line side, identify after true no-voltage, circuit electricity check trolley is shaken to testing position post-tensioning fixing to cabinet by operating position outward, and check;
17) the inactive line earthing switch blade that closes, and check;
18) the air switch 3DK2 of disconnection inactive line switch control power supply;
The operation order of drawing up, after and signature errorless on the occasion of the long examination & verification of, value, and after positive order is sent out in scheduling, can carry out the stand-by circuit of high-tension switch cabinet and changed into by operation the grid switching operation of switch and line maintenance.
4. transformer station according to claim 3 high-tension switch cabinet microcomputer misoperation prevention locking method, it is characterized in that: before switch cubicle grid switching operation is carried out, operating personnel are according to operating procedure graphics aided in the five-preventing system of backstage, the reasonability of verification operation step;
While carrying out local operation, after completing, graphics aided imports computer key into, operating personnel carry out item by item according to operation order content, when execution is violated to the content of operation of anti-misoperation locking logic, computer key is realized forced blocking, send alarm and information simultaneously, the correct executable operations of guiding operating personnel, thus reach the object that prevents maloperation;
When straighforward operation, operating personnel are sent and allow signal to monitoring system by main frame, untie the romote controlled locking of corresponding node, and operation is finished, and main frame is updated the equipment state to current virtual condition.
5. transformer station according to claim 4 high-tension switch cabinet microcomputer misoperation prevention locking method, is characterized in that:
According to preventing misoperation of high-tension switch cabinet code requirement, the inactive line of high-tension switch cabinet changes switch and line maintenance into by operation, needs by the once-through operation of five anti-checkings in operation order, specifically comprises following 4 steps:
1) pull open the switch of inactive line;
2) inactive line switch cart is shaken to testing position and fixed by operating position, and check;
3) inactive line switch cart is pulled to cabinet by testing position fixing outward, and checks;
4) the inactive line earthing switch blade that closes, and check;
The 1st) in step operation, through five-preventing system checking, can help operations staff's checking apparatus title, avoid the generation of operations staff at the backstage mistake point pernicious misoperation fault of other this class of interval switch;
The 2nd) in step operation, shaking hole by the switch cubicle dolly to high-tension switch cabinet inactive line installs five anti-lock, can effectively avoid staff's mistakenly entering charged chamber, in switch co-bit situation, switch cart be shaken to the generation of testing position misoperation fault by operating position;
The 3rd) in step operation, install five anti-lock by the switch cubicle front cabinet door to high-tension switch cabinet inactive line, can effectively avoid staff because of operating pressure large, absent minded, in charged situation or switch cart not in the time of testing position, open the generation of this class accident of switch cubicle front cabinet door;
The 4th) in step operation, install five anti-lockly by the switch cubicle line-to-ground plug-in strip to high-tension switch cabinet inactive line, can effectively avoid staff's charged co-grounding switch or switch cart in the time of testing position, not to close the generation of the pernicious misoperation fault of this class of grounding switch.
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| CN107508148A (en) * | 2017-08-17 | 2017-12-22 | 广东电网有限责任公司佛山供电局 | A kind of closedown structure of transformer substation grounding wire |
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| CN109473871A (en) * | 2018-04-09 | 2019-03-15 | 国家电网公司 | A kind of high-tension switch cabinet earthing switch blade computer anti-misoperation and lockout device and method |
| CN112736582A (en) * | 2020-12-01 | 2021-04-30 | 国网辽宁省电力有限公司锦州供电公司 | Anti-misoperation mechanical locking device mounted on internal grounding wire of transformer substation |
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| CN107508148A (en) * | 2017-08-17 | 2017-12-22 | 广东电网有限责任公司佛山供电局 | A kind of closedown structure of transformer substation grounding wire |
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| CN108281311B (en) * | 2018-03-24 | 2023-09-26 | 常州帕斯菲克自动化技术股份有限公司 | Blocking device for preventing live operation of high-voltage switch cabinet |
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| CN109473871B (en) * | 2018-04-09 | 2020-07-14 | 国家电网公司 | Microcomputer anti-misoperation locking device and method for grounding knife switch of high-voltage switch cabinet |
| CN109473895A (en) * | 2018-10-09 | 2019-03-15 | 深圳供电局有限公司 | A kind of bus protects the correct short-circuit operation method of current loop in repair and maintenance |
| CN112736582A (en) * | 2020-12-01 | 2021-04-30 | 国网辽宁省电力有限公司锦州供电公司 | Anti-misoperation mechanical locking device mounted on internal grounding wire of transformer substation |
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