CN114069622A

CN114069622A - Two-incoming-line one-bus-coupler selection switch multi-control mode solution

Info

Publication number: CN114069622A
Application number: CN202111358001.XA
Authority: CN
Inventors: 龙志威
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-02-18

Abstract

The invention relates to a multi-control-mode solution of a two-incoming-line one-bus-coupler selection switch, which is a two-incoming-line one-bus-coupler 3-to-2 switch closing PLC control design based on a control design invented by using a Schneider general Masterpact MT40H1b breaker low-voltage cabinet switch and Schneider TM2221C40R PLC controller hardware, wherein when a 1QF incoming line switch, a 2QF incoming line switch and a 3QF bus-coupler switch are simultaneously in a working position or a testing position and a change-over switch arranged by the bus-coupler switches is driven to an 'automatic' position, and the 1QF, the 2QF and the 3QF switches have no fault, the change-over switches respectively arranged by the 1QF and the 2QF incoming line switches have functions of 'self-throw-in and self-throw-out and hand-repeat', 'segment control' and 'control' modes, and a two-incoming-line one-bus-coupler switch has a 3-to-select 2 switch closing PLC control logic function; when the change-over switch arranged on the scene bus coupler switch is turned to a manual position from automatic, the 1QF and 2QF change-over switches have the function failure in other modes except the manual control function; and respectively increasing the starting control signals of the diesel generators in the section I and the section II and the section 2 in the bus by the sectional operation.

Description

Two-incoming-line one-bus-coupler selection switch multi-control mode solution

Technical Field

The invention belongs to the technical field of power supply equipment, in particular to a two-inlet one-bus-coupler 3-to-2 switch closing PLC control logic design, which is based on a control design invented by using a Schneider Masterpact MT40H1b breaker low-voltage cabinet switch and a Schneider TM2221C40R PLC controller hardware device, wherein when a 1QF inlet switch, a 2QF inlet switch and a 3QF bus-coupler switch are simultaneously at working positions or simultaneously at testing positions, and a change-over switch handle arranged on the bus-coupler switch is switched to an automatic position, the 1QF, the 2QF and the 3QF switches have no fault, the change-over switches respectively arranged on the 1QF inlet switch and the 2QF inlet switch have the functions of self-throw-in and self-reset, self-throw-hand-reset, sectional control and manual control mode, and the two-inlet one-bus-coupler switches have 3-to-2 switch closing PLC control logic; when the 1QF inlet switch, the 2QF inlet switch and the 3QF female gang switch are at working positions or testing positions simultaneously and a change-over switch handle arranged on the female gang switch is turned to a manual position, the 1QF, 2QF and 3QF switches have no fault, the 1QF, 2QF and 3QF switches only have a manual function, the functions of the change-over switches respectively arranged on the 1QF inlet switch and the 2QF inlet switch in a self-throw-in self-reset mode, a self-throw-in self-reset mode and a sectional control mode fail, the two-inlet one-female gang 3-to-2-switch-on PLC control logic function fails, and the 1QF, 2QF and 3QF low-voltage switch cabinet body switch protection function is effective. And the bus segmental operation is respectively added with the starting signals of the diesel generators of the section I1 group and the section II 2 group.

Technical Field

The technical basis is a Schneider Masterpact MT40H1b breaker low-voltage cabinet switch and a Schneider TM2221C40R PLC controller.

The technical basis is that the A-level data center requires power supply safety and reliability, a 2-level power supply and distribution system has no high-voltage bus connection and a 10KV high-voltage diesel generator system, and a 380V medium-voltage bus connection switch configuration system is arranged on the inlet side of a transformer.

In order to shorten the artificial emergency response time and the artificial operation errors as much as possible, the intelligent speed, the safety and the reliability are developed at a high speed, and in order to fully utilize the data center resources, a secondary control schematic diagram of a low-voltage cabinet switch is combined on the basis of the hardware configuration.

The multi-point position change-over switch is customized to have different point position connection functions at 0-degree, 45-degree, 90-degree and-45-degree positions; the multi-point position change-over switch has different point position switch-on functions at 0 degree and 90 degree positions.

The technical basis incoming line low-voltage cabinet switch voltage monitoring RM22TR33 integrates monitoring module hardware.

Disclosure of Invention

The invention relates to a two-inlet one-bus-linkage 3-to-2 switch closing PLC control logic design, which is a control design invented based on hardware equipment using a Schneider Masterpact MT40H1b breaker low-voltage cabinet switch and a Schneider TM2221C40R PLC controller, wherein conversion switches respectively arranged on a 1QF inlet switch and a 2QF inlet switch have 'self-switching and self-resetting', 'self-switching and manual resetting', 'segmented control' and 'manual' positions, the conversion switches arranged on a bus linkage switch have 'manual' and 'automatic' positions, when the 1QF inlet switch, the 2QF inlet switch and the 3QF bus linkage switch are simultaneously and respectively at working positions or simultaneously at testing positions, and a conversion switch handle arranged on the bus linkage switch is switched to the 'automatic' position ', the 1QF, the 2QF and the 3QF switches respectively arranged on the 1QF and the 2QF self-recovery switches have' self-switching ',' self-switching and self-switching The control mode functions of 'sectional control' and 'manual' are realized, and the two-inlet-one bus-coupled switch has a 3-to-2 switch closing PLC control logic function; when the 1QF inlet switch, the 2QF inlet switch and the 3QF female gang switch are at working positions or testing positions simultaneously and a change-over switch handle arranged on the female gang switch is turned to a manual position, the 1QF, 2QF and 3QF switches have no fault, the 1QF, 2QF and 3QF switches only have a manual control function, the functions of the change-over switches respectively arranged on the 1QF and 2QF inlet switches in a self-switching and self-resetting mode, a self-switching and manual-resetting mode and a sectional control mode fail, the two-inlet one-female gang 3-to-2-switch-on PLC control logic function fails, and the 1QF, 2QF and 3QF low-voltage switch cabinet body switch protection function is effective. And the bus segmental operation is respectively added with the starting signals of the diesel generators of the section I1 group and the section II 2 group.

FIG. 2 is a flow chart of the bus tie PLC input: when a change-over switch arranged on the No. 1 inlet wire switch is switched to the self-throw and self-reset position, a No. 1 inlet wire self-throw and self-reset signal is input through an input port of a bus-coupled PLC controller I8, and a PLC intermediate relay records the No. 1 inlet wire self-throw and self-reset M1; when the change-over switch is switched to the 'self-throwing and hand-returning' position, a 'No. 1 incoming line self-throwing and hand-returning' signal is input by an I9 input port, and a 'No. 1 incoming line self-throwing and hand-returning M2' is recorded; when the change-over switch is turned to a 'section control' position, a 'No. 1 incoming line section control' signal is input by an I22 input port, and a 'No. 1 incoming line section control M3' is recorded; inputting a 3QF closing state signal through an I18 input port, wherein 3QF closing delay time is 1 second and is '3 QF closing state confirmation M14', and 3QF opening delay time is 1 second and is '3 QF opening state confirmation M11'; inputting a No. 1 incoming call signal through an I2 input port, recording the number 1 incoming call M17, the number 1 incoming call delaying the number 1 second, recording the number 1 incoming call with electricity confirmation, recording the number 1 incoming call with electricity M7 setting S, recording the number 1 incoming call with electricity loss M17 delaying the number 3 second, recording the number 1 incoming call with electricity loss M7 resetting R; inputting a No. 2 incoming call signal through an I17 input port, recording the number 2 incoming call M18, the number 2 incoming call delaying 1 second for confirming that the number 2 incoming call is electrified, recording the number 2 incoming call electrified M8 setting S, the number 2 incoming call losing electricity M18 losing electricity delaying 3 seconds, and recording the number 2 incoming call losing electricity M8 resetting R; and a 1QF closing state signal, 1QF closing delay time of 1 second and 1QF closing state confirmation M15 are input by an I4 input port, and 1QF opening delay time of 1 second and 1QF opening state confirmation M12 are input by the I4 input port.

Fig. 3 and 5 are two and three flow charts of bus-coupled PLC input: when a change-over switch arranged on the No. 2 inlet wire switch is turned to the self-throwing and self-resetting position, a No. 2 inlet wire self-throwing and self-resetting signal is input through an input port of a bus-coupled PLC controller I15, and a PLC intermediate relay records the No. 2 inlet wire self-throwing and self-resetting M4; when the change-over switch is switched to the 'self-throwing hand resetting' position, a 'No. 2 incoming line self-throwing hand resetting' signal is input by an I16 input port, and a 'No. 2 incoming line self-throwing hand resetting' signal is recorded 'M5'; when the change-over switch is turned to a 'section control' position, a 'No. 2 incoming line section control' signal is input by an I23 input port, and a 'No. 2 incoming line section control M6' is input; inputting a 2QF closing state signal by using an I11 input port, recording 2QF closing delay time of 1 second as '2 QF closing state confirmation M16', and recording 2QF opening delay time of 1 second as '2 QF opening state confirmation M13'; when the 1QF inlet switch, the 2QF inlet switch and the 3QF bus-coupled switch are respectively at the working position and have no fault at the same time, respectively using the input ports I6, I13 and I20 to input 1QF, 2QF and 3QF working position signals or simultaneously respectively at the testing position and have no fault at the same time, respectively using the input ports I7, I14 and I21 to input 1QF, 2QF and 3QF testing position signals and the change-over switch handle arranged on the bus-coupled switch is turned to the 'automatic' position, using the input port I3 to input a 'bus-coupled automatic selection' signal, and recording 'automatic control permission M9'.

FIG. 4 is a flow chart of a 1QF closing command and a PLC failure to close fault: when a change-over switch arranged on the No. 1 inlet wire switch is switched to any one of a self-throw self-reset M1 position, a self-throw hand-reset M2 position and a change-over switch arranged on a bus-coupled switch is switched to an automatic position and automatic control allows M9, a 1QF closing state M7(S) is output when the conditions of a 1QF opening state confirmation note M12 and a 3QF opening state confirmation note M11 are met, a 1QF closing state confirmation note M20 command is output, 1QF is delayed for 1 second, a 1 second closing state confirmation note M15 is output, and otherwise, 2 seconds of non-closing time is delayed for 1 second, and a failure closing failure note M30 is reported.

FIG. 6 is a flow chart of 1QF brake-separating command and PLC fault that the brake cannot be separated: when the change-over switch arranged on the No. 1 incoming line switch is turned to any one of a position of 'self-throw and self-reset M1', 'self-throw and self-reset M2' and 'automatic control is allowed to record M9', a 1QF opening register M7(R) and a 1QF closing state confirmation register M15 are simultaneously met, a 1QF opening register M21 command is output, 1QF opening delay is 1 second, 1QF opening state confirmation register M12 is delayed, and otherwise, 1QF incapability opening fault register M31 is reported in 2 seconds after no opening.

FIG. 7 is a flow chart of a 2QF closing command and a PLC failure to close fault: when a change-over switch arranged on the No. 2 inlet wire switch is switched to any one of a self-throw self-reset M4 position, a self-throw hand-reset M5 position and a change-over switch arranged on a bus-coupled switch is switched to an automatic position and the automatic control allows to record M9, a 2QF closing record M8(S) is output when the conditions of the No. 2 inlet wire switch, a 2QF opening state confirmation record M13 and a 3QF opening state confirmation record M11 are met, a 2QF closing record M22 command is output, the 2QF closing state confirmation record M16 is delayed for 1 second by 2QF, and otherwise, the 2QF can not be closed and the fault record M32 is reported by 2 seconds without closing delay.

FIG. 8 is a flow chart of a 2QF brake-separating command and a PLC fault which cannot be separated: when the change-over switch arranged on the No. 2 incoming line switch is turned to any one of the position of 'self-throw self-reset M4', 'self-throw hand reset M5' and 'automatic' position and the change-over switch arranged on the bus coupler is turned to the 'automatic' position and 'automatic control permission record M9', the No. 2 incoming line switch power-off record M8(R) and the 2QF closing state confirmation record M16 meet the conditions at the same time, a 2QF opening record M23 command is output, 2QF opening delay is 1 second, 2QF opening state confirmation record M13, and otherwise, 2QF failure record M33 is reported in 2 seconds without opening delay.

Fig. 9 is a flow chart of PLC controller Q0 outputting PLC operation instruction: when the conditions of the automatic switch, the M9, the clock pulse signal generated in the PLC are simultaneously met, and the Q0 output pulse signal PLC operates.

Fig. 10 is a 3QF closing command and non-closing fault PLC flow chart: when the conditions of any one of the position of a change-over switch arranged on the No. 1 incoming line switch, namely 'self-throw and self-reset M1' and 'self-throw and hand reset M2' and the No. 2 incoming line live-wire record M8(S), the 1QF brake-off state confirmation record M12, the 2QF switch-on state confirmation record M16 and the No. 1 incoming line switch power-off record M17 are met at the same time, the condition is a large condition (1); when the conditions of the change-over switch arranged on the No. 2 incoming line switch to any one of the positions of 'self-throw and self-reset M4' and 'self-throw and hand-reset M5' and the No. 1 incoming line switch are met simultaneously, the conditions are large (2); when the large condition (1) or the large condition (2) and the bus coupler setting change-over switch are turned to an 'automatic' position and the 'automatic control allows to record M9', and when the conditions above the 3QF switching-off state confirmation record M11 are simultaneously met, a 3QF switching-on record M24 command is output, the 3QF switching-on record M24 delays for 1 second and the 3QF switching-on state confirmation record M14, otherwise, the 3QF non-switching-on delay time is 2 seconds, and the 3QF non-switching-on fault record M34 is reported.

FIG. 11 is a flow chart of the 3QF opening command and the PLC with the failure of opening: the condition (1) is that when the change-over switch arranged on the No. 1 incoming line switch is turned to the position of 'self-throw self-reset M1', the No. 1 incoming line has the electric mark M7(S) and the 1QF brake-off state confirmation mark M12 are met simultaneously; the conditions that a change-over switch arranged on the No. 2 incoming line switch is turned to the conditions of 'self-throwing self-resetting M4', a 2QF brake-off state confirmation memory M13 and a No. 2 incoming line electrification memory M8(S) are met to be a large condition (2); the conditions of the No. 1 incoming line power loss record M7(R) and the No. 2 incoming line power loss record M8(R) are simultaneously satisfied as a large condition (3); when any one of the large conditions (1), (2) and (3) meets the conditions that the change-over switch arranged in the bus coupler is turned to an 'automatic' position and the conditions of 'automatic control permission record M9' and above a 3QF closing state confirmation record M14 are met simultaneously, a 3QF opening record M25 command is output, 3QF opening delay is 1 second, and a 3QF opening state confirmation record M11 is output, otherwise, the 3QF can not be opened and the fault record M35 is reported in 2 seconds without opening delay.

FIG. 12 is a flow chart of a 3QF opening command and a PLC failure to open: when the change-over switch arranged on the No. 1 incoming line switch is turned to the 'automatic throw hand reset M2', the 3QF closing state confirmation note M14, the change-over switch arranged on the bus coupler is turned to the 'automatic' position and the 'automatic control permission note M9', the No. 1 incoming line electricity note M7(S), the No. 2 incoming line electricity loss note M8(R), the 1QF opening state confirmation note M12 and the 2QF opening state confirmation note M13 rise and time are met, and when the above conditions are met, a 3QF opening note M25 command is output, the 3QF opening delay time is 1 second, the 3QF opening state confirmation note M11 is obtained, and otherwise, the 3QF non-opening delay time is not obtained, and the 2 second alarm is given for the 3QF non-opening fault note M35.

FIG. 13 is a three-flow chart of a 3QF opening command and a PLC failure of opening failure: when a change-over switch arranged on the No. 2 incoming line switch is turned to an 'automatic switching hand reset M5', a 3QF closing state confirmation M14, a change-over switch arranged on a bus coupler is turned to an 'automatic' position and an 'automatic control permission record M9', a No. 1 incoming line power-off record M7(R), a No. 2 incoming line power-on record M8(S), a No. 2QF opening state confirmation record M13 and a No. 1QF opening state confirmation record M12 are subjected to the conditions that the rising edge is up and the time is up, and when the conditions are met, a 3QF opening record M25 command is output, 3QF opening is delayed for 1 second, a 3QF opening state confirmation record M11 is delayed for 3QF not opening, and 2 seconds, and a 3QF can not open fault record M35 is reported.

Fig. 14 is a flow chart of the output PLC of the 1QF switch automatic control Q1: any one of the conditions of 1QF non-closing fault recording M30, 1QF non-opening fault recording M31, 3QF non-closing fault recording M34 and 3QF non-opening fault recording M35 meets the condition that more than a clock pulse signal generated inside the PLC is a large condition (1); when the conditions that the position of any one of a change-over switch arranged on the No. 1 incoming line switch is hit to the self-throw-in self-reset M1, the self-throw-in hand reset M2 and the sectional control M3, and the 1QF can not be switched on, the 1QF can not be switched off, the 3QF can not be switched on and the 3QF can not be switched off are met at the same time, the condition is a large condition (2); when any one of the large condition (1) or the large condition (2) and a change-over switch arranged on the bus-bar switch are in an 'automatic' position and the 'automatic control permission memory M9' is met, the automatic control Q1 of the 1QF switch is output.

Fig. 15 is a flow chart of the 2QF switch automatic control Q2 output PLC: any one of the conditions of the 2QF non-closing fault recording M32, the 2QF non-opening fault recording M33, the 3QF non-closing fault recording M34 and the 3QF non-opening fault recording M35 meets the condition that more than a clock pulse signal generated inside the PLC is a large condition (1); when the conditions that the change-over switch arranged on the No. 2 incoming line switch is pressed to any one of the position of 'self-throw-in self-reset M4', 'self-throw-in hand reset M5' and 'sectional control M6', the 2QF can not be switched on, the 2QF can not be switched off, the 3QF can not be switched on and the 3QF can not be switched off are met at the same time, the condition is a large condition (2); when the change-over switch of any one of the large condition (1) or the large condition (2) and the setting of the bus tie switch is turned to the 'automatic' position and the 'automatic control permission memory M9' is satisfied at the same time, the 2QF switch automatic control Q2 is output.

Fig. 16 is a PLC flow chart of 1QF closing/opening output and 2QF closing/opening Q output: when the conditions that the 1QF has no fault of incapability of closing and the 1QF closing is recorded to be more than M20 are met simultaneously, outputting a Q3 high level of the 1QF closing; when the conditions that 1QF has no brake-separating fault and more than 1QF brake-separating note M21 are met simultaneously, outputting a 1QF brake-separating Q4 high level; when the 2QF has no fault of incapability of closing and the condition of more than 2QF closing memory M22 is met simultaneously, outputting a Q5 high level of 2QF closing; and when the 2QF has no failure of brake opening and the conditions above the 2QF brake opening memory M23 are simultaneously met, the 2QF brake opening Q6 high level is output.

Fig. 17 is a 3QF closing/opening Q output PLC flow chart: outputting a 3QF closing Q7 high level when the 3QF has no fault of incapability of closing and the 3QF closing M24 condition is met simultaneously; and when the 3QF has no failure of brake opening and the conditions above the 3QF brake opening memory M25 are simultaneously met, the 3QF brake opening Q8 high level is output.

Fig. 18 is a flow chart of the PLC output by the No. 1 oil engine start signal Q9: the change-over switch arranged on the No. 1 incoming line switch is turned to the 'self-throwing self-resetting M1' or the 'self-throwing hand resetting M2', and any position is set as a large condition (1); the large condition (2) is set when the conditions of No. 2 incoming line power loss M8(R) and 2QF brake-off state confirmation M13 are simultaneously met; recording M34 as a condition (3) that the 3QF can not be switched on; a large condition (4) when one of the large condition (2) and the condition (3) is satisfied; a large condition (5) when the large condition (1) and the large condition (4) are simultaneously satisfied; when a change-over switch arranged on the No. 1 incoming line switch is turned to the No. 1 incoming line sectional control M3 or one of the conditions of the large condition (5) is the large condition (6); the number 1 incoming line power loss recording M7(R), the number 1QF brake-off state confirmation recording M12, the number 3QF brake-off state confirmation recording M11, the switching switch arranged on the bus coupler switch is turned to an 'automatic' position, and the conditions are simultaneously satisfied when the 'automatic control permission recording M9' is a large condition (7); when the large condition (6) and the large condition (7) are simultaneously met, the intermediate relay of the PLC controller is output, the No. 1 oil engine starting M40 is recorded, the No. 1 oil engine starting M40 is connected with the No. 1 group oil engine starting signal output Q9 high level, at the moment, the coil of the relay K9 is electrified, the normally open contact of the relay is closed, and the No. 1 group oil engine starting signal is output.

Fig. 19 is a flow chart of the PLC output by the No. 2 oil engine start signal Q10: the change-over switch arranged on the No. 2 incoming line switch is turned to the 'self-throwing self-resetting M4' or the 'self-throwing hand resetting M5', and any position is set as a large condition (1); the large condition (2) is set when the conditions of No. 1 incoming line power loss M7(R) and 1QF brake-off state confirmation M12 are simultaneously met; recording M34 as a condition (3) that the 3QF can not be switched on; a large condition (4) when one of the large condition (2) and the condition (3) is satisfied; a large condition (5) when the large condition (1) and the large condition (4) are simultaneously satisfied; the change-over switch arranged on the No. 2 incoming line switch is turned to the No. 2 incoming line section control M6 or the big condition (6) is set when one of the conditions of the big condition (5) is met; the number 2 incoming line power loss recording M8(R), the number 2QF brake-off state confirmation recording M13, the number 3QF brake-off state confirmation recording M11, the switching switch arranged on the bus-coupled switch is turned to an 'automatic' position, and the conditions are simultaneously satisfied when the 'automatic control permission recording M9' is a large condition (7); when the large condition (6) and the large condition (7) are simultaneously met, the PLC controller intermediate relay is output, the No. 2 oil engine starting M41 is recorded, the No. 2 oil engine starting M41 is switched on, the No. 2 oil engine starting signal output Q10 is at a high level, at the moment, the coil of the relay K10 is electrified, the normally open contact of the relay is closed, and the No. 2 oil engine starting signal output is realized.

Drawings

Fig. 1 is a table diagram of PLC input/output interface function setting and PLC intermediate relay function setting of the present design using schneider TM221C 40R.

FIG. 2 is a flow chart of the PLC input of the present design.

FIG. 3 is a flow chart of the PLC input of the present design.

Fig. 4 is a flow chart of a 1QF closing command and a no-closing fault PLC of the present design.

FIG. 5 is a flow chart of the PLC input of the present design.

FIG. 6 is a flow chart of the PLC for the 1QF opening command and the failure of opening.

Fig. 7 is a flow chart of a 2QF closing command and a no-closing fault PLC of the present design.

FIG. 8 is a PLC flowchart of the 2QF gate-off command and the gate-off failure of the design.

Fig. 9 is a flowchart of PLC controller Q0 outputting PLC operation instructions according to the present design.

Fig. 10 is a flow chart of a 3QF closing command and a no-closing fault PLC of the present design.

FIG. 11 is a flowchart of the 3QF gate-off command and the PLC with a failure of gate-off.

FIG. 12 is a flow chart of the present design 3QF opening command and fail to open PLC.

FIG. 13 is a flow chart of the 3QF opening command and the PLC with the failure of opening.

Fig. 14 is a flow chart of the output PLC of the QF switch automatic control Q1 of the present design.

Fig. 15 is a flow chart of the output PLC of the 2QF switch automatic control Q2 of the present design.

Fig. 16 is a PLC flow chart of 1QF closing/opening output and 2QF closing/opening Q output according to the present design.

Fig. 17 is a flow chart of 3QF closing/opening Q output PLC of the present design.

Fig. 18 is a flow chart of the PLC output signal Q9 of the No. 1 oil engine of the present design.

Fig. 19 is a flow chart of the PLC output signal Q10 of the No. 2 oil engine of the present design.

FIG. 20 shows the function and control diagram of the Schneider TM221C40R PLC I/O pin used in the bus-tie of the present design.

Fig. 21 is a schematic diagram of a secondary control part of the No. 1 inlet line breaker of the design.

Fig. 22 is a schematic diagram of a secondary control part of the No. 2 inlet line breaker of the design.

Fig. 23 is a schematic diagram of a secondary control part of the bus-tie circuit breaker of the design.

Fig. 24 is a schematic diagram of the contact position closing of the 3SA switch according to the present design.

Fig. 25 is a schematic diagram of the contact position closing of the switches of the present design 1SA and 2 SA.

Detailed Description

The invention skillfully uses the multi-point position change-over switch in figure 24 to have different switch-on positions when the change-over switch is turned to different positions of 0 degree and 90 degrees, and figure 20 and figure 23 lead the 3SA point 1-2 to be conducted and the point 7-8 to be not conducted when the change-over switch arranged on the bus tie switch is turned to the 'manual' position; when a change-over switch arranged on the bus coupler switch is turned to an 'automatic' position, points 5-6 and 7-8 of SA are conducted in the figures 20 and 23; when the multi-point position change-over switch of fig. 25 is turned to-45 degrees, 0 degrees, 45 degrees and 90 degrees, different turn-on positions can be provided, and when the change-over switches 1SA and 2SA arranged on the No. 1 incoming line switch and the No. 2 incoming line switch are respectively turned to the manual position, the 1SA point and the 2SA point 1-2 are conducted, the 7-8 point is conducted, and other points are not conducted in fig. 20, 21 and 22; when the change-over switches 1SA and 2SA are respectively driven to the 'sectional control' position, the point positions 3-4, 5-6, 9-10, 11-12 and 23-24 of the point positions are respectively conducted, and the other point positions are not conducted; when the change-over switches 1SA and 2SA are respectively driven to the self-throwing and resetting positions, the point positions 3-4, 9-10 and 19-20 of the point positions 1SA and 2SA are respectively conducted, and other point positions are not conducted; when the change-over switches 1SA and 2SA are respectively switched to the self-throw and self-reset positions, the point 1SA and the point 2SA are respectively conducted at the point 3-4, the point 5-6, the point 9-10, the point 11-12 and the point 21-22, and the other points are not conducted.

Fig. 20, monitoring voltage of the No. 1 incoming line switch adopts RM22TR33 integrated module monitoring, integrated module relay 1KV normally open contact 21-24, point 21 terminal connected to +24V of the bus tie switch PLC power supply, point 24 terminal connected to input port I2 of the bus tie switch PLC; in fig. 20, voltage monitoring of the No. 2 incoming line switch adopts RM22TR33 integrated module monitoring, an integrated module relay 2KV normally open contact 21-24, a point 21 terminal is connected to +24V of the bus-coupled switch PLC power supply, and a point 24 terminal is connected to an input port I17 of the bus-coupled switch PLC.

The change-over switch 1SA arranged on the number 1 incoming line switch in fig. 20 and fig. 1 uses the multi-point change-over switch in fig. 25, the 1SA point 20 end is connected to the input port I9 of the bus coupler switch PLC through the number 3209 line, and the 1SA point 19 end is connected to +24V of the PLC power supply; the 1SA point 22 end is connected to a PLC input port I8 of the bus coupler switch through a number 3211 line, and the 1SA point 21 end is connected to a PLC power supply + 24V; the end of the 1SA point 24 is connected to an input port I22 of the PLC of the bus coupler switch through a number 3215 line, and the end of the 1SA point 23 is connected to +24V of the PLC power supply.

The change-over switch 2SA arranged on the number 2 incoming line switch in fig. 20 and 2 uses the multi-point change-over switch in fig. 25, the 20 end of the 2SA point is connected to the PLC input port I16 of the bus coupler switch through the number 3227 line, and the 19 end of the 2SA point is connected to the +24V PLC power supply; the 2SA point 22 end is connected to a PLC input port I15 of the bus coupler switch through a 3229 line, and the 2SA point 21 end is connected to a PLC power supply + 24V; the end of the 2SA point 24 is connected to the input port I23 of the PLC of the bus coupler switch through a 3233 line, and the end of the 2SA point 23 is connected to +24V of the PLC power supply.

Fig. 20, the transfer switch 3SA of the bus coupler uses the multi-point transfer switch of fig. 24, the 3SA point 8 end is connected to the PLC input port I3 of the bus coupler switch through the 3035 line, and the 3SA point 7 end is connected to the PLC power supply + 24V.

In fig. 20, the output end of the PLC controller Q9 of the bus tie switch is connected to the L end of the coil K9 of the relay K9 of the bus tie switch cabinet through the 3319 line, and the other end of the coil K9 is connected to the TWDN line; the output end of the PLC controller Q10 of the bus-coupled switch is connected to the L end of the coil of the relay K10 of the bus-coupled switch cabinet and the other end of the coil K9 of the bus-coupled switch cabinet through a No. 3321 wire.

In the schematic diagram part of the control of the No. 1 incoming line breaker, the change-over switch 1SA arranged in the No. 1 incoming line switch in fig. 21 and fig. 25 is a multi-point change-over switch, and the point 1 end, the point 3 end and the point 5 end of the 1SA are all connected to a UPSL line; the 1SA point 2 is terminated to 1031 number line, the 1SA point 4 is terminated to 1XT-30 end by 1035 number line, and the 1SA point 6 is terminated to 1XT-31 end by 1037 number line.

In the schematic diagram part of the No. 2 incoming line breaker, the change-over switch 2SA arranged in the No. 2 incoming line switch in fig. 22 and fig. 2 uses the multi-point change-over switch in fig. 25, and the point 7 end, the point 9 end and the point 11 end of the 2SA are all connected to the UPSL line; the 2SA point 8 is terminated to the 2031 line, the 2SA point 10 is terminated to the 2XT-30 line through the 2035 line, and the 2SA point 12 is terminated to the 2XT-31 line through the 2037 line.

A control schematic diagram part of a bus coupler switch circuit breaker, wherein a change-over switch 3SA arranged in a bus coupler switch in the graph 23 uses a multi-point change-over switch in the graph 24, and a point 1 end and a point 5 end of the 3SA are connected to a UPSL line; the 3SA point location 2 terminates on line 3031, the 3SA point location 6 terminates on line 3033 and the 3SA point location 6 terminates on line 3035.

According to the design of fig. 1, the implementation method of the part of fig. 2 is that firstly, a normally open contact of a PLC relay I8 (No. 1 incoming line self-throw and self-reset) is taken, then, a normally closed contact of an I9 (No. 1 incoming line self-throw and self-reset) is connected in series, and then, a normally closed contact of an I22 (No. 1 incoming line segment control) is connected in series to output a PLC intermediate relay note M1 (No. 1 incoming line self-throw and self-reset); (PLC inputs No. 1 incoming line self-throwing self-restoring mode signal through I8 input port;)

According to the design of fig. 1, the implementation method of the part of fig. 2 is that firstly, a normally closed contact of a PLC relay I8 (No. 1 incoming line self-throw self-reset) is connected in series with an I9 normally open contact (No. 1 incoming line self-throw reset) and then connected in series with an I22 (No. 1 incoming line segment control) normally closed contact, and finally a PLC intermediate relay note M2 (No. 1 incoming line self-throw reset) is output; (PLC inputs No. 1 incoming line self-service hand-throwing reset mode signal through I9 input port;)

According to the design of fig. 1, the implementation method of the part of fig. 2 is that firstly, a normally closed contact of a PLC relay I8 (No. 1 incoming line self-throw self-reset) is taken, then the normally closed contact of a PLC relay I9 (No. 1 incoming line self-throw self-reset) is connected in series, then the normally open contact of a PLC relay I22 (No. 1 incoming line segment control) is connected in series, and finally a PLC intermediate relay note M3 (No. 1 incoming line segment control) is output; (PLC inputs No. 1 incoming line segment control mode signal through I22 input port;)

According to the design of fig. 1, the implementation method of the part of fig. 3 is that firstly, a normally open contact of a PLC relay I15 (No. 2 incoming line self-throw self-reset) is taken, then, a normally closed contact of an I16 (No. 2 incoming line self-throw self-reset) is connected in series, then, a normally closed contact of an I23 (No. 2 incoming line segment control) is connected in series, and finally, a PLC intermediate relay note M4 (No. 2 incoming line self-throw self-reset) is output; (PLC inputs No. 2 incoming line self-throwing self-restoring mode signal through I15 input port;)

According to the design of fig. 1, the implementation method of fig. 3 is that firstly, a normally closed contact of a PLC relay I15 (No. 2 incoming line self-throw self-reset) is connected in series with an I16 normally open contact (No. 2 incoming line self-throw reset), then connected in series with an I23 (No. 2 incoming line segment control) normally closed contact, and finally a PLC intermediate relay note M5 (No. 2 incoming line self-throw reset) is output; (PLC inputs No. 2 incoming line self-service hand-throwing reset mode signal through I16 input port;)

According to the arrangement of fig. 1, the implementation method of fig. 3 is that firstly, a normally closed contact of a PLC relay I15 (No. 2 incoming line self-throw self-reset) is taken, then, the normally closed contact of a PLC relay I16 (No. 2 incoming line self-throw self-reset) is connected in series, then, the normally open contact of a PLC relay I23 (No. 2 incoming line segment control) is connected in series, and finally, a PLC intermediate relay note M6 (No. 2 incoming line segment control) is output; (PLC inputs No. 2 incoming line segment control mode signal through I23 input port;)

According to the design of fig. 1, the implementation method of fig. 2 is that firstly, a normally open contact of a PLC relay I2 (incoming call of number 1) is connected in series, and then a PLC intermediate relay M17 (incoming call of number 1) is output; (PLC inputs No. 1 incoming call signal through I2 input port;)

According to the design of fig. 1, the implementation method of fig. 2 is that firstly, a time delay unit time delay 1S clock setting M7 (No. 1 incoming line is electrified) is connected in series with a normally open contact of a PLC intermediate relay M17 (No. 1 incoming line is electrified);

according to the design of fig. 1, the implementation method of fig. 2 is that firstly, a normally closed contact of a PLC intermediate relay M17 (No. 1 incoming line is electrified) is taken, and then a delay unit is connected in series to delay a 3S clock reset M7 (No. 1 incoming line is electrified);

according to the design of fig. 1, the implementation method of fig. 2 is that firstly, a normally open contact of a PLC relay I17 (incoming call of No. 2 incoming line) is connected in series, and then a PLC intermediate relay M18 (incoming call of No. 2 incoming line) is output; (PLC inputs No. 2 incoming call signal through I17 input port;)

According to the design of fig. 1, the implementation method of fig. 2 is that firstly, a PLC intermediate relay M18 (No. 2 incoming line is electrified) normally open contact is connected in series with an upper delay unit for delaying 1S clock, and then, M8 is set (No. 2 incoming line is electrified);

according to the design of fig. 1, the implementation method of the part of fig. 2 is that a normally closed contact of a PLC intermediate relay M18 (No. 2 incoming line is electrified) is connected in series with an upper delay unit for delaying 3S clock and then reset M8 (No. 2 incoming line is electrified);

according to the design of the figure 1, the implementation method of the figure 5 is that firstly, a PLC relay I6(1QF working position) normally open contact is connected with an I13(2QF working position) normally open contact in series and then connected with an I20(3QF working position) normally open contact in series, then the PLC relay is connected with the I7(1QF testing position) normally open contact in parallel, then the I14(2QF testing position) normally open contact is connected with an I21(3QF testing position) normally open contact in series, then the I5(1QF fault state) normally closed contact is connected with an I12(2QF fault state) normally closed contact in series, then the I19(3QF fault state) normally closed contact is connected with an I3 (bus-bus automatic selection) normally open contact in series, and finally a PLC intermediate note M9 (automatic control permission relay) is output; (the PLC inputs a 1QF working position signal through an I6 input port, an I13 input port inputs a 2QF working position signal, an I20 input port inputs a 3QF working position signal, an I7 input port inputs a 1QF test position signal, an I14 input port inputs a 2QF test position signal, an I21 input port inputs a 3QF test position signal, an I3 input port inputs a change-over switch arranged in a bus-tie to turn to an 'automatic' position signal;)

According to the design of the figure 1, the implementation method of the figure 2 is that firstly, a normally closed contact of a PLC relay I18(3QF closing state) is connected with a delay unit in series for delaying for 1S, and then a PLC intermediate relay M11 is output (3QF opening state confirmation); (input port of PLC controller I18 input 3QF closing state signal;)

According to the design of the figure 1, the implementation method of the figure 2 is that firstly, a normally open contact of a PLC relay I18(3QF closing state) is taken, then a delay unit is connected in series for delaying for 1S, and then a PLC intermediate relay M14 is output (3QF closing state confirmation); (input port of PLC controller I18 input 3QF closing state signal;)

According to the design of the figure 1, the implementation method of the figure 2 is that firstly, a normally closed contact of a PLC relay I4(1QF closing state) is connected with a delay unit in series for delaying 1S, and then a PLC intermediate relay M12 is output (1QF opening state confirmation); (input port of PLC controller I4 input 1QF closing state signal;)

According to the design of the figure 1, the implementation method of the figure 2 is that firstly, a normally open contact of a PLC relay I4(1QF closing state) is taken, then a delay unit is connected in series for delaying 1S, and then a PLC intermediate relay M15 is output (1QF closing state confirmation); (input port of PLC controller I4 input 1QF closing state signal;)

According to the design of the figure 1, the part of the implementation method of the figure 3 is that firstly, a normally closed contact of a PLC relay I11(2QF closing state) is connected with a delay unit in series for delaying for 1S, and then a PLC intermediate relay M13 is output (2QF opening state confirmation); (input port of PLC controller I11 input 2QF closing state signal;)

According to the design of the figure 1, the part of the implementation method of the figure 3 is that firstly, a normally open contact of a PLC relay I11(2QF closing state) is taken, then a delay unit is connected in series for delaying 1S, and then a PLC intermediate relay M16 is output (2QF closing state confirmation); (input port of PLC controller I11 input 2QF closing state signal;)

According to the design of the figure 1, the implementation method of the figure 4 is that firstly [ a PLC intermediate relay M1 (number 1 incoming line self-throw self-reset) normally open contact is taken to be connected with an M2 (number 1 incoming line self-throw self-reset) normally open contact in parallel and then connected with an M3 (number 1 incoming line sectional control) normally open contact in parallel ], then an M11(3QF opening state confirmation) normally open contact is connected in series, then an M12(1QF opening state confirmation) normally open contact is connected in series, then an M7 (number 1 incoming line has no electricity confirmation) normally open contact is connected in series, an M9 (automatic control permission) normally open contact is connected in series, and finally a PLC intermediate relay M20(1QF closing) is output;

according to the design of the figure 1, the implementation method of the figure 4 is that firstly, a normally open contact of a PLC intermediate relay M20(1QF closing) is taken, then a delay unit is connected in series for delaying 2S clocks, and finally a PLC intermediate relay M30(1QF can not be closed) is output; (the input port of the PLC controller I5 inputs a 1QF fault state signal;)

According to the design of the figure 1, the implementation method of the figure 6 is that firstly [ a PLC intermediate relay M1 (No. 1 incoming line self-throw self-reset) normally open contact and an M2 (No. 1 incoming line self-throw self-reset) normally open contact and an M3 (No. 1 incoming line sectional control) normally open contact are connected in parallel ], then an M9 (automatic control permission) normally open contact is connected in series, then an M7 (No. 1 incoming line has no electricity confirmation) normally closed contact is connected in series, then an M15(1QF closing state confirmation) normally open contact is connected in series, and finally a PLC intermediate relay M21(1QF separating brake) is output;

according to the design of the figure 1, the implementation method of the figure 6 is that firstly, a normally open contact of a PLC intermediate relay M21(1QF brake separating) is taken, then, a delay unit is connected in series for delaying 2S clocks, and finally, a PLC intermediate relay mark M31(1QF brake separating failure) is output; (the input port of the PLC controller I5 inputs a 1QF fault state signal;)

According to the design of the figure 1, the part of the implementation method of the figure 7 is that firstly, a PLC intermediate relay M4 (number 2 incoming line self-throw self-reset) normally open contact and an M5 (number 2 incoming line self-throw self-reset) normally open contact and an M6 (number 2 incoming line sectional control) normally open contact are taken to be connected in parallel, then, an M11(3QF opening state confirmation) normally open contact is connected in series, then, an M13(2QF opening state confirmation) normally open contact is connected in series, then, an M8 (number 2 incoming line with non-electricity confirmation) normally open contact is connected in series, then, an M9 (automatic control permission) normally open contact is connected in series, and finally, a PLC intermediate relay M22(2QF closing) is output;

according to the design of the figure 1, the implementation method of the figure 7 is that firstly, a normally open contact of a PLC intermediate relay M22(2QF closing) is taken, then, a delay unit is connected in series to delay a 2S clock, and finally, a PLC intermediate relay M32(2QF can not be closed) is output; (the input port of the PLC controller I12 inputs a 2QF fault state signal;)

According to the design of fig. 1, the implementation method of the part of fig. 8 is that firstly [ a PLC intermediate relay M4 (No. 2 incoming line self-throw self-reset) normally open contact and an M5 (No. 2 incoming line self-throw self-reset) normally open contact and an M6 (No. 2 incoming line sectional control) normally open contact are taken to be connected in parallel ], then an M9 (automatic control permission) normally open contact is connected in series, then an M8 (No. 2 incoming line has no electricity confirmation) normally closed contact is connected in series, then an M16(2QF closing state confirmation) normally open contact is connected in series, and finally a PLC intermediate relay M23(2QF separating brake) is output;

according to the design of the figure 1, the implementation method of the figure 8 is that firstly, a normally open contact of a PLC intermediate relay M23(2QF opening) is taken, then, a delay unit is connected in series for delaying 2S clocks, and finally, a PLC intermediate relay mark M33(2QF can not open the gate fault) is output; (the input port of the PLC controller I12 inputs a 2QF fault state signal;)

According to the design of fig. 1, the implementation method of fig. 9 is that firstly [ a PLC intermediate relay M1 (No. 1 incoming line self-throw self-reset) normally open contact and a M2 (No. 1 incoming line self-throw self-reset) normally open contact and a M3 (No. 1 incoming line segment control) normally open contact are taken to be connected in parallel with a M4 (No. 2 incoming line self-throw self-reset) normally open contact and a M5 (No. 2 incoming line self-throw self-reset) normally open contact and a M6 (No. 2 incoming line segment control) normally open contact 6, then the M9 (automatic control permission) normally open contact is connected in series, then a clock pulse normally open contact is generated inside a PLC internal controller in series, and finally a Q0(PLC operation) is output;

according to the design of fig. 1, the partial realization method of fig. 10 is that firstly, a PLC intermediate relay { [ M1 (number 1 incoming line self-throw self-reset) normally open contact and M2 (number 1 incoming line self-throw self-reset) normally open contact 2 are connected in parallel, then, an M17 (number 1 incoming line electrified) normally closed contact is connected in series, then, an M12(1QF separating state confirmation) normally open contact is connected in series, then, an M8 (number 2 incoming line electrified confirmation) normally open contact is connected in series, then, an M16 (number 2QF state confirmation) normally open contact is connected in series, a PLC intermediate relay { [ M4 (number 2 incoming line self-throw self-reset) normally open contact and M5 (number 2 incoming line self-throw reset) normally open contact 2 are connected in parallel, then, an M18 (number 2 incoming line electrified) normally closed contact is connected in series, then, an M13 (2) normally open separating state confirmation) normally open contact is connected in series, then, an M7 (number 1) normally open contact is connected in series, Then serially connecting an M15(1QF closing state confirmation) normally open contact), 2 connecting the two in parallel under a large condition, then serially connecting an M9 (automatic control permission) normally open contact, then serially connecting an M11(3QF opening state confirmation) normally open contact, and finally outputting a PLC intermediate relay M24(3QF closing);

according to the design of the figure 1, the implementation method of the figure 10 is that firstly, a normally open contact of a PLC intermediate relay M24(3QF closing) is taken, then, a delay unit is connected in series for delaying 2S clocks, and finally, a PLC intermediate relay M34(3QF can not be closed) is output;

according to the design of fig. 1, fig. 11, fig. 12, fig. 13 are partially implemented by first taking a PLC intermediate relay { [ M1 (No. 1 incoming line self-throw self-reset) normally open contact, then serially connecting an M7 (No. 1 incoming line has no electricity confirmation) normally open contact, then serially connecting an M12(1QF open state confirmation) normally open contact ], then serially connecting an M4 (No. 2 incoming line self-throw self-reset) normally open contact, then serially connecting an M8 (No. 2 incoming line has no electricity confirmation) normally open contact, then serially connecting an M13(2QF open state confirmation) normally open contact, then serially connecting an M7 (No. 1 incoming line has no electricity confirmation) normally closed contact in 3 conditions above M8 (No. 2 incoming line has no electricity confirmation) normally closed contact in parallel, then serially connecting an M14(3QF close state confirmation) normally open contact, then serially connecting an M9 (automatic control permission) normally open contact, and then taking a PLC intermediate relay { [ M2 (No. 1 incoming line self-throw self-incoming line contact) normally open contact in, Then serially connecting an M7 (No. 1 incoming line with no electricity confirmation) normally open contact, then serially connecting an M12 (No. 1QF opening state confirmation) normally open contact, then serially connecting an M8 (No. 2 incoming line with no electricity confirmation) normally closed contact, then serially connecting an M13 (No. 2QF opening state confirmation) rising edge normally open contact, then serially connecting an M5 (No. 2 incoming line self-throw-on-reset) normally open contact, then serially connecting an M8 (No. 2 incoming line with no electricity confirmation) normally open contact, then serially connecting an M13 (No. 2QF opening state confirmation) normally open contact, then serially connecting an M7 (No. 1 incoming line with no electricity confirmation) normally closed contact, then serially connecting an M12 (No. 1QF opening state confirmation) rising edge normally open contact in parallel, then serially connecting an M14 (No. 3QF closing state confirmation) normally open contact, and then serially connecting an M9 (automatic control permission) normally open contact, and serially connecting an M14 (automatic control permission) normally open contact in parallel, and finally, outputting a PLC intermediate relay M25(3QF opening).

According to the design of fig. 1, the implementation method of the parts of fig. 11, 12 and 13 is that firstly, a normally open contact of a PLC intermediate relay M25(3QF opening) is taken, then, a delay unit is connected in series for delaying 2S clocks, and finally, a PLC intermediate relay mark M35(3QF failure) is output;

according to the design of fig. 1, the implementation method of fig. 14 is that firstly, a PLC intermediate relay { [ M1 (No. 1 incoming line self-throw self-reset) normally open contact, then, a M2 (No. 1 incoming line self-throw self-reset) normally open contact, then, a M3 (No. 1 incoming line sectional control) normally open contact is connected in parallel, then, a M30(1QF can not be closed) normally closed contact is connected in series, then, a M31(1QF can not be opened) normally closed contact is connected in series, then, a M34(3QF can not be closed) normally closed contact is connected in series, then, a M35(3QF can not be opened) normally closed contact } is connected in series, a front big condition and a back big condition, a PLC intermediate relay { [ M30(1QF can not be closed) normally open contact, then, a M30(1QF can not be opened) normally open contact is connected in parallel with a M2 (3QF can not be opened), then, a M3 QF can not be opened, then, a normally open contact can not be opened with M34 (3) normally open, then, parallel connected with M829 can not be opened with M3) can not be opened, Then serially connecting with a PLC internal clock pulse signal normally open contact, 2 connecting in parallel under a large condition, then serially connecting with an M9 (automatic control permission) normally open contact, and finally outputting Q1(1QF switch automatic control).

According to the design of the figure 1, the implementation method of the figure 15 is that firstly a PLC intermediate relay { [ M4 (No. 2 incoming line self-throw self-reset) normally open contact, then a M5 (No. 2 incoming line self-throw self-reset) normally open contact, then a M6 (No. 2 incoming line sectional control) normally open contact ] is connected in parallel with 3 above, then an M32(2QF can not be closed) normally closed contact is connected in series, then an M33(2QF can not be opened) normally closed contact is connected in series, then an M34(3QF can not be closed) normally closed contact is connected in series, then an M35(3QF can not be opened) normally closed contact } is connected in series, a PLC intermediate relay { [ M32(2QF can not be closed) normally open contact under the large front brace condition and a rear brace condition is taken to be normally open [ M32(2QF can not be opened) normally open contact, then a PLC intermediate relay { [ M33 (3QF can not be opened) normally open, then a M34(3QF can not be closed) normally open, then a fault is connected in parallel with M35(3 QF) normally open contact, then a fault is connected in parallel with M33) normally open contact, and then a fault can not be opened, Then serially connecting with a PLC internal clock pulse signal normally closed contact, serially connecting with a 2-step condition in parallel, then serially connecting with an M9 (automatic control permission) normally open contact, and finally outputting Q2(2QF switch automatic control).

According to the design shown in fig. 1, the implementation method shown in fig. 16 and fig. 17 is that firstly, a normally open contact of a PLC intermediate relay M20(1QF closing) is taken, then, a normally closed contact of an M30(1QF failing to close a fault) is connected in series, and finally, Q3(1QF switch closing output) is output.

According to the design of fig. 1, the implementation method of fig. 16 and fig. 17 is to take a PLC intermediate relay M21(1QF opening) normally open contact, then connect an M31(1QF failing to open) normally closed contact in series, and finally output Q4(1QF switch opening output).

According to the design shown in fig. 1, the implementation method shown in fig. 16 and fig. 17 is that firstly, a PLC intermediate relay M22(2QF closing) normally open contact is taken, then, an M32(2QF failing to close a fault) normally closed contact is connected in series, and finally, Q5(2QF switch closing output) is output.

According to the design of fig. 1, the implementation method of fig. 16 and fig. 17 is to take a PLC intermediate relay M23(2QF opening) normally open contact, then connect an M33(2QF failing to open) normally closed contact in series, and finally output Q6(2QF switch opening output).

According to the design shown in fig. 1, the implementation method shown in fig. 16 and fig. 17 is that firstly, a PLC relay M24(3QF closing) normally open contact is taken, then an M34(3QF failing to close a fault) normally closed contact is connected in series, and finally, Q7(3QF switch closing output) is output.

According to the design of fig. 1, the part of the implementation method of fig. 16 and fig. 17 is that firstly, a PLC intermediate relay M25(3QF opening) normally open contact is taken, then, an M35(3QF failing to open the gate) normally closed contact is connected in series, and finally, a Q8(3QF switch opening output) is output.

According to the design of fig. 1, the implementation method of the part of fig. 18 is that firstly, a PLC intermediate relay { [ M1 (No. 1 incoming line self-throw self-reset) normally open contact is connected with an M2 (No. 1 incoming line self-throw self-reset) normally open contact in parallel, then a PLC intermediate relay { [ M8 (No. 2 incoming line has no electricity confirmation) normally closed contact is connected in series, then an M13(2QF tripping state confirmation) normally open contact is connected in series, then an M34(3QF non-closing fault) normally open contact is connected in parallel, then an M3 (No. 1 incoming line segment control) normally open contact } is connected in parallel, then an M11(3QF tripping state confirmation) normally open contact is connected in series, then, an M7 (No. 1 incoming line has no electricity confirmation) normally closed contact is connected in series, an M12(1QF opening state confirmation) normally open contact is connected in series, an M9 (automatic control permission) normally open contact is connected in series, and finally a PLC intermediate relay M40 (No. 1 oil engine starting) is output.

According to the design of fig. 1, the implementation method of the part of fig. 18 is that firstly, a normally open contact of a PLC intermediate relay M40 (oil engine start No. 1) is connected in series, and finally, a Q9 (oil engine start No. 1 signal output) is output.

According to the design of fig. 1, the method of fig. 19 is to first connect a PLC intermediate relay { [ M4 (No. 2 incoming line self-throw self-reset) normally open contact in parallel with M5 (No. 2 incoming line self-throw self-reset) normally open contact ] in series, then connect a PLC intermediate relay { [ M7 (No. 1 incoming line has electricity confirmation) normally closed contact in series, then connect M12(1QF tripping state confirmation) normally open contact in series, then connect M34(3QF non-closing fault) normally open contact in parallel, then connect M6 (No. 2 incoming line segment control) normally open contact in parallel, then connect M11(3QF tripping state confirmation) normally open contact in series, then, an M8 (no-power confirmation is carried out on the No. 2 incoming line) normally closed contact is connected in series, an M13(2QF opening state confirmation) normally open contact is connected in series, an M9 (automatic control permission) normally open contact is connected in series, and finally a PLC intermediate relay is output to record M41 (No. 2 oil engine starting).

According to the design of fig. 1, the implementation method of the part of fig. 19 is that firstly, a normally open contact of a PLC intermediate relay M41 (oil engine start No. 2) is connected in series, and finally, a Q10 (oil engine start No. 2 signal output) is output.

Claims

1. The invention belongs to the technical field of power supply equipment, in particular to a two-inlet one-bus-coupler 3-to-2 switch closing PLC control logic design, which is based on a control design invented by using a Schneider Masterpact MT40H1b breaker low-voltage cabinet switch and a Schneider TM2221C40R PLC controller hardware device, wherein when a 1QF inlet switch, a 2QF inlet switch and a 3QF bus-coupler switch are simultaneously in a working position or a testing position, and a change-over switch handle arranged on the bus-coupler switch is switched to an 'automatic' position, the 1QF, the 2QF and the 3QF switches have no fault, the change-over switches respectively arranged on the 1QF inlet switch and the 2QF inlet switch have functions of 'self-throw-in self-reset', 'self-throw-hand-reset', 'segment control' and 'manual' control modes, and the two-inlet one-bus-coupler switch has a 3-to-2 switch closing PLC control logic; when the 1QF inlet switch, the 2QF inlet switch and the 3QF female gang switch are at working positions or testing positions simultaneously and a change-over switch handle arranged on the female gang switch is turned to a manual position, the 1QF, 2QF and 3QF switches have no fault, the 1QF, 2QF and 3QF switches only have a manual function, the functions of the change-over switches respectively arranged on the 1QF inlet switch and the 2QF inlet switch in a self-throw-in self-reset mode, a self-throw-in self-reset mode and a sectional control mode fail, the two-inlet one-female gang 3-to-2-switch-on PLC control logic function fails, and the 1QF, 2QF and 3QF low-voltage switch cabinet body switch protection function is effective. And the bus segmental operation is respectively added with the starting signals of the diesel generators of the section I1 group and the section II 2 group.

2. The claim, fig. 3 and 5 are two and three flow charts of the bus-coupled PLC input: when a change-over switch arranged on the No. 2 inlet wire switch is turned to the self-throwing and self-resetting position, a No. 2 inlet wire self-throwing and self-resetting signal is input through an input port of a bus-coupled PLC controller I15, and a PLC intermediate relay records the No. 2 inlet wire self-throwing and self-resetting M4; when the change-over switch is switched to the 'self-throwing hand resetting' position, a 'No. 2 incoming line self-throwing hand resetting' signal is input by an I16 input port, and a 'No. 2 incoming line self-throwing hand resetting' signal is recorded 'M5'; when the change-over switch is turned to a 'section control' position, a 'No. 2 incoming line section control' signal is input by an I23 input port, and a 'No. 2 incoming line section control M6' is input; inputting a 2QF closing state signal by using an I11 input port, recording 2QF closing delay time of 1 second as '2 QF closing state confirmation M16', and recording 2QF opening delay time of 1 second as '2 QF opening state confirmation M13'; when the 1QF inlet switch, the 2QF inlet switch and the 3QF bus-coupled switch are respectively at the working position and have no fault at the same time, respectively using the input ports I6, I13 and I20 to input 1QF, 2QF and 3QF working position signals or simultaneously respectively at the testing position and have no fault at the same time, respectively using the input ports I7, I14 and I21 to input 1QF, 2QF and 3QF testing position signals and the change-over switch handle arranged on the bus-coupled switch is turned to the 'automatic' position, using the input port I3 to input a 'bus-coupled automatic selection' signal, and recording 'automatic control permission M9'.

3. The claim, fig. 18 is a PLC flow chart of the No. 1 oil engine start signal Q9 output: the change-over switch arranged on the No. 1 incoming line switch is turned to the 'self-throwing self-resetting M1' or the 'self-throwing hand resetting M2', and any position is set as a large condition (1); the large condition (2) is set when the conditions of No. 2 incoming line power loss M8(R) and 2QF brake-off state confirmation M13 are simultaneously met; recording M34 as a condition (3) that the 3QF can not be switched on; a large condition (4) when one of the large condition (2) and the condition (3) is satisfied; a large condition (5) when the large condition (1) and the large condition (4) are simultaneously satisfied; when a change-over switch arranged on the No. 1 incoming line switch is turned to the No. 1 incoming line sectional control M3 or one of the conditions of the large condition (5) is the large condition (6); the number 1 incoming line power loss recording M7(R), the number 1QF brake-off state confirmation recording M12, the number 3QF brake-off state confirmation recording M11, the switching switch arranged on the bus coupler switch is turned to an 'automatic' position, and the conditions are simultaneously satisfied when the 'automatic control permission recording M9' is a large condition (7); when the large condition (6) and the large condition (7) are simultaneously met, the intermediate relay of the PLC controller is output, the No. 1 oil engine starting M40 is recorded, the No. 1 oil engine starting M40 is connected with the No. 1 group oil engine starting signal output Q9 high level, at the moment, the coil of the relay K9 is electrified, the normally open contact of the relay is closed, and the No. 1 group oil engine starting signal is output.

4. The claim, fig. 19 is a PLC flow chart of the No. 2 oil engine start signal Q10 output: the change-over switch arranged on the No. 2 incoming line switch is turned to the 'self-throwing self-resetting M4' or the 'self-throwing hand resetting M5', and any position is set as a large condition (1); the large condition (2) is set when the conditions of No. 1 incoming line power loss M7(R) and 1QF brake-off state confirmation M12 are simultaneously met; recording M34 as a condition (3) that the 3QF can not be switched on; a large condition (4) when one of the large condition (2) and the condition (3) is satisfied; a large condition (5) when the large condition (1) and the large condition (4) are simultaneously satisfied; the change-over switch arranged on the No. 2 incoming line switch is turned to the No. 2 incoming line section control M6 or the big condition (6) is set when one of the conditions of the big condition (5) is met; the number 2 incoming line power loss recording M8(R), the number 2QF brake-off state confirmation recording M13, the number 3QF brake-off state confirmation recording M11, the switching switch arranged on the bus-coupled switch is turned to an 'automatic' position, and the conditions are simultaneously satisfied when the 'automatic control permission recording M9' is a large condition (7); when the large condition (6) and the large condition (7) are simultaneously met, the PLC controller intermediate relay is output, the No. 2 oil engine starting M41 is recorded, the No. 2 oil engine starting M41 is switched on, the No. 2 oil engine starting signal output Q10 is at a high level, at the moment, the coil of the relay K10 is electrified, the normally open contact of the relay is closed, and the No. 2 oil engine starting signal output is realized.

5. The claim, fig. 14 is a 1QF switch automatic control Q1 output PLC flow chart: any one of the conditions of 1QF non-closing fault recording M30, 1QF non-opening fault recording M31, 3QF non-closing fault recording M34 and 3QF non-opening fault recording M35 meets the condition that more than a clock pulse signal generated inside the PLC is a large condition (1); when the conditions that the position of any one of a change-over switch arranged on the No. 1 incoming line switch is hit to the self-throw-in self-reset M1, the self-throw-in hand reset M2 and the sectional control M3, and the 1QF can not be switched on, the 1QF can not be switched off, the 3QF can not be switched on and the 3QF can not be switched off are met at the same time, the condition is a large condition (2); when any one of the large condition (1) or the large condition (2) and a change-over switch arranged on the bus-bar switch are in an 'automatic' position and the 'automatic control permission memory M9' is met, the automatic control Q1 of the 1QF switch is output.

6. The claim, fig. 10 is a PLC flow chart of 3QF close command and fail close fault: when the conditions of any one of the position of a change-over switch arranged on the No. 1 incoming line switch, namely 'self-throw and self-reset M1' and 'self-throw and hand reset M2' and the No. 2 incoming line live-wire record M8(S), the 1QF brake-off state confirmation record M12, the 2QF switch-on state confirmation record M16 and the No. 1 incoming line switch power-off record M17 are met at the same time, the condition is a large condition (1); when the conditions of the change-over switch arranged on the No. 2 incoming line switch to any one of the positions of 'self-throw and self-reset M4' and 'self-throw and hand-reset M5' and the No. 1 incoming line switch are met simultaneously, the conditions are large (2); when the large condition (1) or the large condition (2) and the bus coupler setting change-over switch are turned to an 'automatic' position and the 'automatic control allows to record M9', and when the conditions above the 3QF switching-off state confirmation record M11 are simultaneously met, a 3QF switching-on record M24 command is output, the 3QF switching-on record M24 delays for 1 second and the 3QF switching-on state confirmation record M14, otherwise, the 3QF non-switching-on delay time is 2 seconds, and the 3QF non-switching-on fault record M34 is reported.

7. The claim, fig. 4 is a 1QF close command and fail-to-close fault PLC flow diagram: when a change-over switch arranged on the No. 1 inlet wire switch is switched to any one of a self-throw self-reset M1 position, a self-throw hand-reset M2 position and a change-over switch arranged on a bus-coupled switch is switched to an automatic position and automatic control allows M9, a 1QF closing state M7(S) is output when the conditions of a 1QF opening state confirmation note M12 and a 3QF opening state confirmation note M11 are met, a 1QF closing state confirmation note M20 command is output, 1QF is delayed for 1 second, a 1 second closing state confirmation note M15 is output, and otherwise, 2 seconds of non-closing time is delayed for 1 second, and a failure closing failure note M30 is reported.

8. The claim, FIG. 6 is a 1QF brake-off command and fail-to-brake-off PLC flow chart: when the change-over switch arranged on the No. 1 incoming line switch is turned to any one of a position of 'self-throw and self-reset M1', 'self-throw and self-reset M2' and 'automatic control is allowed to record M9', a 1QF opening register M7(R) and a 1QF closing state confirmation register M15 are simultaneously met, a 1QF opening register M21 command is output, 1QF opening delay is 1 second, 1QF opening state confirmation register M12 is delayed, and otherwise, 1QF incapability opening fault register M31 is reported in 2 seconds after no opening.

9. The claim, fig. 7 is a PLC flow chart of 2QF close command and fail close fault: when a change-over switch arranged on the No. 2 inlet wire switch is switched to any one of a self-throw self-reset M4 position, a self-throw hand-reset M5 position and a change-over switch arranged on a bus-coupled switch is switched to an automatic position and the automatic control allows to record M9, a 2QF closing record M8(S) is output when the conditions of the No. 2 inlet wire switch, a 2QF opening state confirmation record M13 and a 3QF opening state confirmation record M11 are met, a 2QF closing record M22 command is output, the 2QF closing state confirmation record M16 is delayed for 1 second by 2QF, and otherwise, the 2QF can not be closed and the fault record M32 is reported by 2 seconds without closing delay.