CN110888385B - Method for simplifying automatic control flow configuration of low-voltage unit - Google Patents
Method for simplifying automatic control flow configuration of low-voltage unit Download PDFInfo
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- CN110888385B CN110888385B CN201911075644.6A CN201911075644A CN110888385B CN 110888385 B CN110888385 B CN 110888385B CN 201911075644 A CN201911075644 A CN 201911075644A CN 110888385 B CN110888385 B CN 110888385B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
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- G05B2219/11—Plc I-O input output
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Abstract
The invention discloses a method for simplifying the configuration of an automatic control flow of a low-voltage unit, wherein a controller is electrically connected with a human-computer interface through a serial port, the controller and the human-computer interface are electrically connected with a monitoring upper computer, and the low-voltage unit is electrically connected with the controller; the software flow program comprises a starting-up flow module and a stopping flow module, and the starting-up flow module and the stopping flow module are downloaded and stored in a flow parameter storage area of the controller; programming a preset starting-up flow module and a preset stopping flow module, wherein the judging steps in the starting-up flow module and the stopping flow module are controlled through flow parameter variables; and setting a process parameter variable through a human-computer interface by a user, and downloading the process parameter variable into a process parameter storage area after the process parameter variable is set. The invention aims to realize flexible adjustment of the unit flow under different field equipment conditions and easy operation, so that a common user can simply and conveniently modify the control flow according to the field condition and avoid errors as much as possible.
Description
Technical Field
The invention relates to a method for simplifying the configuration of an automatic control flow of a low-voltage unit, belonging to the technical field of automatic control.
Background
The integrated control system of the low-voltage unit is the core of an automatic system of a low-voltage unit power station, and a controlled object covers main primary system equipment and secondary system equipment of the power station, including monitoring, protection, excitation, a circuit breaker, a speed regulator and other auxiliary control equipment. The intelligent controller of the low-voltage unit is the core equipment of the integrated control system of the low-voltage unit, has multiple functions of data acquisition, processing, communication, monitoring and the like, and the automatic control process of the unit is also realized through the intelligent controller.
There are two existing solutions: one is similar to the conventional hydropower station monitoring system with a system integrated by taking a PLC as a core, the automatic control of a unit is realized by a PLC programming method, and the control flow is designed and compiled by equipment debugging personnel according to the requirements of a design institute, the requirements of users and the actual situation of a site and can be modified on the site; the other is an intelligent controller adopting an integrated design, a manufacturer writes a set of control flow in advance and solidifies the control flow in a CPU of the controller, a user accesses required signals and loops according to design requirements, and the controller can control the unit according to the preset flow.
The first scheme can make different control flows according to different actual situations on site, and can modify the PLC program to adapt to changes when site conditions change. However, the modification of the PLC program has high requirements on the professional technical level of maintainers, most of hydropower stations using low-voltage units are rural small hydropower stations, and the maintainers of the power stations are difficult to master, so that the technicians of equipment manufacturers mostly modify the hydropower stations on site, and the modification is inconvenient.
According to the second scheme, when the preset control flow logic is reasonably designed and the whole limiting conditions are considered, the user can ensure that the automatic control flow of the unit is normally executed according to the design access signal, and the debugging and maintenance work is simple and convenient. However, when the conditions of the field devices change, the normal execution of the process cannot be guaranteed, the control process cannot be directly modified to adapt to the field change, and the normal operation of the unit is affected. The low-voltage unit control system provided by the current market is not flexible enough in the aspect of the configuration of the automatic unit control flow and is not convenient and fast for the operation and maintenance of users.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a method for simplifying the configuration of the automatic control flow of the low-voltage unit, so that a general user can simply and conveniently modify the control flow through a human-computer interface of a controller or an upper computer, certain flexibility of a low-voltage unit control system is ensured when the low-voltage unit control system operates under different conditions, the safety requirement on the control process is not reduced, and the requirement on the professional level of the user is lower.
In order to achieve the aim, the invention provides a method for simplifying the automatic control flow configuration of a low-voltage unit, which is characterized by comprising a human-computer interaction module and a software flow program, wherein the human-computer interaction module comprises a controller, a serial port, a human-computer interface, the low-voltage unit and a monitoring upper computer; the software flow program comprises a starting-up flow module and a stopping flow module, and the starting-up flow module and the stopping flow module are downloaded and stored in a flow parameter storage area of the controller;
programming a preset starting-up flow module and a preset stopping flow module, wherein the judging steps in the starting-up flow module and the stopping flow module are controlled through flow parameter variables;
and setting a process parameter variable through a human-computer interface by a user, and downloading the process parameter variable into a process parameter storage area after the process parameter variable is set.
Preferably, the boot process module includes the following steps:
inputting values of process parameter variables X4, Q14, Q15, Q16, Q17, Q18, R401=0, R402, R404, R405, R406, R407, R409, R410, R411, R412, R413, R414, R417, R418, R419, R420, R421, I0021, I0010, I0011, I0016, I0017, I0018, I0019, JZ _ F, reactive power regulation function input PQ _ STATE, active power setting value P _ SET =0, reactive power setting value Q _ SET 0, P _ INIT and Q _ INIT in a human-computer interface;
step one, judging whether the guide vane position is judged: reading the value of R410 in the process parameter storage area, judging the position of the guide vane if the value of R410 is 1, then judging whether the guide vane is completely closed, if the process parameter variable I0021=1 is true, indicating that the guide vane is completely closed, and jumping to the step two; if the R410 value is 0, the guide vane position is not judged, and the step II is skipped;
if the process parameter variable I0021=1 is false, it indicates that the guide vane is not fully closed, and the human-computer interface displays that "the startup condition is not satisfied: when the guide vane is not completely closed, the process is exited, and the program operation is finished;
step two, reading the value of R404, if the value of R404 is 1, starting cooling water, namely keeping the cooling water, starting the cooling water, and jumping to the step three after the flow parameter variable Q15= 1; if the value of R404 is 0, indicating that the on cooling water is not the hold type on, the human-machine interface displays "on cooling water pulse (Q15,5000)" and proceeds to step three.
Preferably, the boot process module includes the following steps:
step three, judging whether the cooling water is fully boiled: reading the value of R411, if the value of R411 is 1, judging that the cooling water is fully opened, and if the cooling water is fully opened, jumping to the step four; if the value of R411 is 0, which means that the cooling water is not judged to be fully opened, Q15=0 and the process goes to step five;
step four, judging whether the cooling water is fully boiled: if the variable I0016 is 1 and the variable I0017 is 0, indicating that the cooling water is fully opened, clearing an opening point Q15=0, and jumping to the fifth step; if the condition that the variable I0016 is 1 or the condition that the variable I0017 is 0 is not met, the cooling water is not fully opened, then circularly judging whether the condition that the variable I0016 is 1 and the variable I0017 is 0 is met within R405 seconds, if the condition that the variable I0016 is 1 and the variable I0017 is 0 is not met within R405 seconds, the man-machine interface displays 'overtime, water supply fault' and the flow exits: q15=0 ", the flow exits, and the program operation ends; if the conditions that the variable I0016 is 1 and the variable I0017 is 0 in R405 seconds are met, the cooling water is fully opened, a clearing starting point Q15=0, and the step five is skipped;
step five, judging whether the back braking is the hold type opening: reading the value of the R407 value, if the value of the R407 is 0, indicating that the brake release is not the hold-type opening, displaying 'brake release pulse (Q14,5000)' on the human-computer interface, and jumping to the step six; if the value of R407 is 1, indicating that the reverse braking is the hold-type release reverse braking, Q14=1, and the process goes to step six.
Preferably, the boot process module includes the following steps:
step six, judging whether the braking exit position is: reading the value of R412, if R412=0 and the brake exit position is not judged, clearing the open point Q14=0, and jumping to the step eight; if R412=1, the braking exit position is judged, and the step seven is skipped;
step seven, judging whether the brake is quitted: if the variable I0010 is 0 and the variable I0011 is 0, the condition is satisfied, that the braking is exited, the open point Q14=0 is cleared, and the step eight is skipped; if the condition that the variable I0010 is 0 and the variable I0011 is 0 is not met, indicating that braking does not exit, circularly judging whether the variable I0010 is 0 and the variable I0011 is 0 within R409 seconds, and if the condition that the variable I0010 is 0 and the variable I0011 is 0 within R409 seconds is not met, indicating that braking does not exit, displaying that the starting condition is not met by the human-computer interface: braking is not withdrawn; q14=0 ", the flow exits, and the program operation ends; if the variable I0010 is 0 and the variable I0011 is 0 in R409 seconds, the clear out point Q14=0, and the process skips to step eight.
Preferably, the boot process module includes the following steps:
step eight, judging whether the opening main valve is a holding type opening: reading the value of R401, if R401 is 0, indicating that the open main valve is not the hold-type open, displaying the open main valve (Q17, 5000) on the human-computer interface, and jumping to the step nine; if R401 is 1, indicating that the open main valve is the hold open, the main valve is opened, Q17=1, and the process goes to step nine;
step nine, whether the main valve is at the full-open position is judged: reading the value of R413, if R413=0 indicates that the full-open position of the main valve is not judged, Q17=0, displaying 'governor starting pulse (Q8, 5000)' on a human-computer interface, and jumping to the step eleven; if R413=1 indicates that the main valve full open position is determined, the routine proceeds to step ten.
Preferably, the boot process module includes the following steps:
step ten, judging whether the main valve is fully opened: if the conditions that I0018 is 1 and the variable I0019 is 0 are met, the main valve is fully opened, Q17=0, the human-computer interface displays 'governor starting pulse (Q8, 5000)', and the step eleven is skipped; if the condition that I0018 is 1 and the variable I0019 is 0 is not met, indicating that the main valve is not fully opened, judging whether I0018 is 1 and the variable I0019 is 0 or not in a loop of R402 seconds, if the condition that I0018 is 1 and the variable I0019 is 0 is not met within the R402 seconds, indicating that the main valve is not fully opened, displaying' the main valve fully opened failure by the human-computer interface, and exiting the process: q17=0 ", the process exits, the program operation is ended, if the conditions that I0018 is 1 and the variable I0019 is 0 are met within R402 seconds, the main valve is fully opened, Q17=0, the human-computer interface displays" governor startup pulse (Q8, 5000) ", and the step eleven is skipped;
step eleven, judging whether the rotational speed of the throwing brake is greater than 95% of the maximum rotational speed of the throwing brake, reading the value of R414, if the value of R414 is not greater than 95% of the maximum rotational speed of the throwing brake, circularly judging whether JZ _ F is greater than or equal to 4750 true within X4 seconds, if the JZ _ F is greater than or equal to 4750 within X4 seconds, still false, indicating that the rotational speed of the throwing brake is not increased to 95% of full speed, displaying that the rotational speed is not increased to 95% on a human-computer interface, exiting the process, ending the program operation, and jumping to step twelve if the circularly judging that JZ _ F is greater than or equal to 4750 true within X4 seconds; if the value of R414 is greater than 95% of the maximum speed of the brakes, jumping to step twelve;
step twelve, with base charge, PQ _ STATE =3, P _ SET = P _ INIT, Q _ SET = Q _ INIT.
Preferably, the shutdown flow module comprises the steps of:
step thirteen, load reduction time limit, defining PQ _ STATE =3, P _ SET =0 and Q _ SET = 0;
judging whether the load of the unit is reduced to be below 5 percent: if the load of the unit is reduced to be below 5%, displaying 'speed governor stopping pulse (Q5,5000)' on the human-computer interface, and jumping to the step fourteen; if the load of the unit is not reduced to be below 5%, performing loop detection in R419 seconds to judge whether the load of the unit is reduced to be below 5%, if the load of the unit is not reduced to be 5% in R419 seconds, displaying that the power of the unit is not reduced, the process is exited, Q18=0, the process is exited, the program is finished, and if the load of the unit is detected to be below 5% in R419 seconds, displaying that the speed governor is stopped and pulse (Q5,5000) on the human-machine interface, and jumping to a step fourteen;
step fourteen, judging whether the rotational speed of the braking is reduced to be less than R421 percent: if the rotating speed of the throwing brake is reduced to be lower than R421%, jumping to a step fifteen; if the rotating speed of the casting brake is not reduced to be lower than R421%, performing cycle detection in R421 seconds to judge whether JZ _ F is less than or equal to 50 multiplied by R421, if JZ _ F is less than or equal to 50 multiplied by R421 in R421 seconds, jumping to step fifteen, if JZ _ F is less than or equal to 50 multiplied by R421 in R421 seconds, displaying 'the rotating speed of the unit is not reduced, the process exits', Q18=0, the process exits, and the program runs;
and a fifteenth step of judging whether the braking is kept-type starting: reading a value of R407, if R407=1 indicates that the brake application is hold-type opening, then the brake application is performed, an opening point Q13 is set to be 1, Q13=0 is delayed for X7 seconds, and the operation jumps to step sixteen; if the value of R407 is read and R407=0 indicates that the brake application is not the hold type on, the human-machine interface displays "brake application pulse (Q13, 5000)", and after a time delay of X7 seconds, Q13=0, the process goes to step sixteen.
Preferably, the shutdown flow module includes the steps of:
sixthly, judging whether the rotational speed of the braking is reduced to be below 5 percent: if the rotating speed of the casting brake is reduced to be below 5%, jumping to a seventeenth step; if the rotating speed of the braking is not reduced to be below 5%, whether the rotating speed of the unit is less than 5% is judged, and if the rotating speed of the unit is less than 5%, the man-machine interface displays that the rotating speed is reduced to be less than 5%, and the process is exited: q14=0 ", Q18=0, the process exits, the procedure finishes running;
seventhly, judging whether braking is released: reading the value of R417, and jumping to a step twenty if R417=0 indicates that the brake is not backing; if R417=1 indicates that braking is off, jumping to eighteen steps;
eighteen, judging whether the back braking is the hold type opening: reading the value of R407, if R407=1 indicates that the brake release is the hold-type open, then the brake release is performed, Q14=1, and the procedure jumps to the nineteen step; if R407=0 indicates that the back brake is not the hold-type on, the human-machine interface displays "back brake pulse (Q14, 5000)", and skips to step nineteen.
Preferably, the shutdown flow module comprises the steps of:
step nineteen, judging whether the brake is quitted: if the condition that the variable I0010 is 0 and the variable I0011 is 1 is met, the braking is exited, Q14=0, and the step twenty is skipped; if the braking is not exited, circularly judging whether the condition that the variable I0010 is 0 and the variable I0011 is 1 is met within R409 seconds, if the condition that the variable I0010 is 0 and the variable I0011 is 1 is met within R409 seconds indicates that the braking is exited, clearing an exit point Q14, and skipping to the twenty step, wherein Q14= 0; if the variable I0010 is 0 and the variable I0011 is 1 within the R409 seconds, the condition is not met all the time, that is, the brake is not detected to be withdrawn, the man-machine interface displays 'brake withdrawal failure and process alarm', the departure point Q14 is cleared, Q14=0, and the step twenty is skipped;
twenty, judging whether the cooling water is turned off: if R418=0 indicates that the cooling water is not turned off, the flow is exited, and the program is finished to run; if R418=1 indicates that the cooling water is turned off, the procedure jumps to the step two and the step one.
Preferably, the shutdown flow module comprises the steps of:
step two, judging whether the cooling water is kept to be turned on or not: if R404=1 indicates that the cooling water is kept on, the cooling water is turned off, Q16=1, and the step two is skipped; if R404=0 indicates that the cooling water is not kept on, the human-computer interface displays "off cooling water pulse (Q16,5000)", and the step two is skipped;
step two, judging whether the cooling water is completely closed: if the condition that the variable I0016 is 0 and the variable I0017 is 1 is met, the cooling water is completely turned off, Q16 and Q18 are cleared, Q16=0, Q18=0, the process is exited, and the program is finished; if the cooling water is not completely closed, circularly judging whether the conditions that the variable I0016 is 0 and the variable I0017 is 1 are met within R406 seconds, if the conditions that the variable I0016 is 0 and the variable I0017 is 1 are met within R406 seconds, indicating that the cooling water is completely closed, clearing the switches of Q16 and Q18, Q16=0, Q18=0, exiting the process, and ending the operation of the program; if the condition that the variable I0016 is 0 and the variable I0017 is 1 is not met all the time within the R406 seconds, the man-machine interface displays that the cooling water is failed to be turned off and the process is alarmed, Q16=0 and Q18=0, the process is exited, and the program is finished running.
The invention achieves the following beneficial effects:
the invention aims to realize flexible adjustment of the unit flow under different field equipment conditions and easy operation, so that a common user can simply and conveniently modify the control flow according to the field condition and avoid errors as much as possible. The method of the invention is flexible in the configuration of the automatic control flow of the unit, is convenient and fast for the operation maintenance of users, enables general users to simply and conveniently modify the control flow through the human-computer interface of the controller or the upper computer, ensures that the low-voltage unit control system has certain flexibility when operating under different conditions, does not reduce the safety requirement on the control process, and has lower requirement on the professional level of the users.
Drawings
FIG. 1 is a boot flow diagram of the present invention;
FIG. 2 is a shutdown flow chart of the present invention.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The method for simplifying the automatic control flow configuration of the low-voltage unit is characterized by comprising a human-computer interaction module and a software flow program, wherein the human-computer interaction module comprises a controller, a serial port, a human-computer interface, the low-voltage unit and a monitoring upper computer; the software flow program comprises a starting-up flow module and a stopping flow module, and the starting-up flow module and the stopping flow module are downloaded and stored in a flow parameter storage area of the controller;
programming a preset starting-up flow module and a preset stopping flow module, wherein the judging steps in the starting-up flow module and the stopping flow module are controlled through flow parameter variables;
and setting a process parameter variable through a human-computer interface by a user, and downloading the process parameter variable into a process parameter storage area after the process parameter variable is set.
Further, the boot process module includes the following steps:
inputting values of process parameter variables X4, Q14, Q15, Q16, Q17, Q18, R401=0, R402, R404, R405, R406, R407, R409, R410, R411, R412, R413, R414, R417, R418, R419, R420, R421, I0021, I0010, I0011, I0016, I0017, I0018, I0019, JZ _ F, reactive power regulation function input PQ _ STATE, active power setting value P _ SET =0, reactive power setting value Q _ SET =0, P _ INIT and Q _ INIT in a human-computer interface;
step one, judging whether the guide vane position is judged: reading the value of R410 in the process parameter storage area, judging the position of the guide vane if the value of R410 is 1, then judging whether the guide vane is completely closed, if the variable I0021=1 of the process parameter is true, indicating that the guide vane is completely closed, and jumping to the step two; if the R410 value is 0, the guide vane position is not judged, and the step II is skipped;
if the process parameter variable I0021=1 is false, it indicates that the guide vane is not fully closed, and the human-computer interface displays that "the startup condition is not satisfied: when the guide vane is not completely closed, the process is exited, and the program operation is finished;
step two, reading the value of R404, if the value of R404 is 1, starting cooling water, namely keeping the cooling water, starting the cooling water, and jumping to the step three after the flow parameter variable Q15= 1; if the value of R404 is 0, indicating that the on cooling water is not the hold type on, the human-machine interface displays "on cooling water pulse (Q15,5000)" and proceeds to step three.
Further, the boot process module includes the following steps:
step three, judging whether the cooling water is fully boiled: reading the value of R411, if the value of R411 is 1, judging that the cooling water is fully opened, and if the cooling water is fully opened, jumping to the step four; if the value of R411 is 0, which means that the cooling water is not judged to be fully opened, Q15=0 and the process skips to step five;
step four, judging whether the cooling water is fully boiled: if the variable I0016 is 1 and the variable I0017 is 0, indicating that the cooling water is fully opened, clearing an opening point Q15=0, and jumping to the fifth step; if the condition that the variable I0016 is 1 or the condition that the variable I0017 is 0 is not met, the cooling water is not fully opened, then circularly judging whether the condition that the variable I0016 is 1 and the variable I0017 is 0 is met within R405 seconds, if the condition that the variable I0016 is 1 and the variable I0017 is 0 is not met within R405 seconds, the man-machine interface displays 'overtime, water supply fault' and the flow exits: q15=0 ", the flow exits, and the program operation ends; if the condition that the variable I0016 is 1 and the variable I0017 is 0 is met in R405 seconds, the cooling water is fully opened, the clearing point Q15=0, and the step five is skipped;
step five, judging whether the back braking is the hold type opening: reading the value of the R407 value, if the value of the R407 is 0, indicating that the brake release is not the hold-type opening, displaying 'brake release pulse (Q14,5000)' on the human-computer interface, and jumping to the step six; if the value of R407 is 1, indicating that the reverse braking is hold-type open, the brake is reversed, Q14=1, and the process goes to step six.
Further, the boot process module includes the following steps:
step six, judging whether the braking exit position: reading the value of R412, if R412=0 and the brake exit position is not judged, clearing the open point Q14=0, and jumping to the step eight; if R412=1, the brake exit position is judged, and the step jumps to the step seven;
step seven, judging whether the brake is quitted: if the variable I0010 is 0 and the variable I0011 is 0, the condition is satisfied, that the braking is exited, the open point Q14=0 is cleared, and the step eight is skipped; if the condition that the variable I0010 is 0 and the variable I0011 is 0 is not met, indicating that braking does not exit, circularly judging whether the variable I0010 is 0 and the variable I0011 is 0 within R409 seconds, and if the condition that the variable I0010 is 0 and the variable I0011 is 0 within R409 seconds is not met, indicating that braking does not exit, displaying that the starting condition is not met by the human-computer interface: braking is not withdrawn; q14=0 ", the flow exits, and the program operation ends; if the variable I0010 is 0 and the variable I0011 is 0 in R409 seconds, the clear out point Q14=0, and the process skips to step eight.
Further, the boot process module includes the following steps:
step eight, judging whether the opening main valve is a holding type opening: reading the value of R401, if R401 is 0, indicating that the open main valve is not the hold-type open, displaying the open main valve pulse (Q17, 5000) on the human-computer interface, and jumping to the step nine; if R401 is 1, indicating that the open main valve is the hold open, the main valve is opened, Q17=1, and the process goes to step nine;
step nine, whether the main valve is at the full-open position is judged: reading the value of R413, if R413=0, indicating that the main valve full-open position is not judged, Q17=0, displaying 'governor on pulse (Q8, 5000)' on a human-computer interface, and jumping to the step eleven; if R413=1 indicates that the main valve full open position is determined, the routine proceeds to step ten.
Further, the boot flow module comprises the following steps:
step ten, judging whether the main valve is fully opened: if the conditions that I0018 is 1 and the variable I0019 is 0 are met, the main valve is fully opened, Q17=0, the human-computer interface displays 'governor starting pulse (Q8, 5000)', and the step eleven is skipped; if the condition that I0018 is 1 and the variable I0019 is 0 is not met, indicating that the main valve is not fully opened, judging whether I0018 is 1 and the variable I0019 is 0 or not in a loop of R402 seconds, if the condition that I0018 is 1 and the variable I0019 is 0 is not met within the R402 seconds, indicating that the main valve is not fully opened, displaying' the main valve fully opened failure by the human-computer interface, and exiting the process: q17=0 ", the process exits, the program operation is ended, if the conditions that I0018 is 1 and the variable I0019 is 0 are met within R402 seconds, the main valve is fully opened, Q17=0, the human-computer interface displays" governor startup pulse (Q8, 5000) ", and the step eleven is skipped;
step eleven, judging whether the rotational speed of the throwing brake is greater than 95% of the maximum rotational speed of the throwing brake, reading the value of R414, if the value of R414 is not greater than 95% of the maximum rotational speed of the throwing brake, circularly judging whether JZ _ F is greater than or equal to 4750 true within X4 seconds, if the JZ _ F is greater than or equal to 4750 within X4 seconds, still false, indicating that the rotational speed of the throwing brake is not increased to 95% of full speed, displaying that the rotational speed is not increased to 95% on a human-computer interface, exiting the process, ending the program operation, and jumping to step twelve if the circularly judging that JZ _ F is greater than or equal to 4750 true within X4 seconds; if the value of R414 is greater than 95% of the maximum speed of the brakes, jumping to step twelve;
step twelve, with base charge, PQ _ STATE =3, P _ SET = P _ INIT, Q _ SET = Q _ INIT.
Further, the shutdown flow module comprises the following steps:
step thirteen, load reduction time limit, defining PQ _ STATE =3, P _ SET =0, and Q _ SET = 0;
judging whether the load of the unit is reduced to be below 5 percent: if the load of the unit is reduced to be below 5%, displaying 'speed governor stopping pulse (Q5,5000)' on the human-computer interface, and jumping to the step fourteen; if the load of the unit is not reduced to be below 5%, performing loop detection in R419 seconds to judge whether the load of the unit is reduced to be below 5%, if the load of the unit is not reduced to be 5% in R419 seconds, displaying that the power of the unit is not reduced, the process is exited, Q18=0, the process is exited, the program is finished, and if the load of the unit is detected to be below 5% in R419 seconds, displaying that the speed governor is stopped and pulse (Q5,5000) on the human-machine interface, and jumping to a step fourteen;
step fourteen, judging whether the rotational speed of the braking is reduced to be less than R421 percent: if the rotating speed of the throwing brake is reduced to be lower than R421%, jumping to a step fifteen; if the rotating speed of the casting brake is not reduced to be lower than R421%, performing cycle detection in R421 seconds to judge whether JZ _ F is less than or equal to 50 multiplied by R421, if JZ _ F is less than or equal to 50 multiplied by R421 in R421 seconds, jumping to step fifteen, if JZ _ F is less than or equal to 50 multiplied by R421 in R421 seconds, displaying 'the rotating speed of the unit is not reduced, the process exits', Q18=0, the process exits, and the program runs;
and a fifteenth step of judging whether the braking is kept-type starting: reading a value of R407, if R407=1 indicates that the brake application is hold-type opening, then the brake application is performed, an opening point Q13 is set to be 1, Q13=0 is delayed for X7 seconds, and the operation jumps to step sixteen; if the value of R407 is read and R407=0 indicates that the brake application is not the hold type on, the human-machine interface displays "brake application pulse (Q13, 5000)", and after a time delay of X7 seconds, Q13=0, the process goes to step sixteen.
Further, the shutdown flow module comprises the following steps:
sixthly, judging whether the rotational speed of the casting brake is reduced to be less than 5 percent or not: if the rotating speed of the casting brake is reduced to be below 5%, jumping to a seventeenth step; if the rotating speed of the throwing brake is not reduced to be below 5%, whether the rotating speed of the unit is less than 5% is judged, if the rotating speed of the unit is less than 5% is judged, the man-machine interface displays that the rotating speed is reduced to be less than 5%, and the process exits: q14=0 ", Q18=0, the process exits, the procedure finishes running;
seventhly, judging whether braking is released: reading the value of R417, and jumping to a step twenty if R417=0 indicates that the brake is not backing; if R417=1 indicates that braking is off, jumping to eighteen steps;
eighteen, judging whether the back braking is the hold type opening: reading the value of R407, if R407=1 indicates that the brake release is the hold-type open, then the brake release is performed, Q14=1, and the procedure jumps to the nineteen step; if R407=0 indicates that the back brake is not the hold-type on, the human-machine interface displays "back brake pulse (Q14, 5000)", and the process proceeds to step nineteen.
Further, the shutdown flow module comprises the following steps:
step nineteen, judging whether the brake is quitted: if the condition that the variable I0010 is 0 and the variable I0011 is 1 is met, the braking is exited, Q14=0, and the step twenty is skipped; if the braking is not exited, circularly judging whether the condition that the variable I0010 is 0 and the variable I0011 is 1 is met within R409 seconds, if the condition that the variable I0010 is 0 and the variable I0011 is 1 is met within R409 seconds indicates that the braking is exited, clearing an exit point Q14, and skipping to the twenty step, wherein Q14= 0; if the variable I0010 is 0 and the variable I0011 is 1 in R409 seconds, the condition is not met all the time, that the brake is not detected to be withdrawn, the man-machine interface displays 'brake withdrawal failure and process alarm', the departure point Q14 is cleared, Q14=0, and the step twenty is skipped;
twenty, judging whether the cooling water is turned off: if R418=0 indicates that the cooling water is not turned off, the flow is exited, and the program is finished to run; if R418=1 indicates that the cooling water is turned off, the procedure jumps to the step two and the step one.
Further, the shutdown flow module comprises the following steps:
step two, judging whether the cooling water is kept to be discharged or not: if R404=1 indicates that the cooling water is kept on, the cooling water is turned off, Q16=1, and the step two is skipped; if R404=0 indicates that the cooling water is not kept on, the human-computer interface displays "off cooling water pulse (Q16,5000)", and the step two is skipped;
step two, judging whether the cooling water is completely closed: if the condition that the variable I0016 is 0 and the variable I0017 is 1 is met, the cooling water is completely turned off, Q16 and Q18 are cleared, Q16=0, Q18=0, the process is exited, and the program is finished; if the cooling water is not completely closed, circularly judging whether the conditions that the variable I0016 is 0 and the variable I0017 is 1 are met within R406 seconds, if the conditions that the variable I0016 is 0 and the variable I0017 is 1 are met within R406 seconds, indicating that the cooling water is completely closed, clearing the switches Q16 and Q18, Q16=0, Q18=0, exiting the process, and ending the operation of the program; if the condition that the variable I0016 is 0 and the variable I0017 is 1 is not met all the time within the R406 seconds, the man-machine interface displays that the cooling water is failed to be turned off and the process is alarmed, Q16=0 and Q18=0, the process is exited, and the program is finished running.
The controller adopts NSLD13601 intelligent controller, and its CPU communicates with the man-machine interface and the monitoring upper computer through serial ports. CPU provides a group of word (16 bit) registers-R registers, one part of which is specially used to store the control flow parameters of the machine set, the user can set the flow parameters through the man-machine interface, and then download the parameters to the flow parameter storage area, or send the flow parameters to the storage area through the upper computer. A set of automatic start-up and shut-down flows are programmed by using a flow chart, a flow frame is fixed, the sequence of steps cannot be disordered, and whether partial steps are executed or not, a start-up mode, delay time, time limit time and the like are controlled by variables. When the process executes to such a step, the variables in the corresponding R registers are read to determine how the process step is executed.
The variable meanings used in the startup and shutdown process are shown in the R register table below:
| description of the invention | Display device | Unit of | Register with a plurality of registers | Numerical range | Initial value |
| Main valve | |||||
| Type of opening | Hold/pulse type | R401 | 1/0 | 0 | |
| Time limit of valve opening | Three-digit integer | Second of | R402 | 0～999 | 180 |
| Time limit of closing valve | Three-digit integer | Second of | R403 | 0～999 | 180 |
| Cooling water | |||||
| Type of opening | Hold/pulse type | R404 | 1/0 | 0 | |
| Time limit of valve opening | Three-digit integer | Second of | R405 | 0～999 | 180 |
| Time limit of closing valve | Three-digit integer | Second of | R406 | 0～999 | 180 |
| Braking device | |||||
| Type of opening | Hold/pulse type | R407 | 1/0 | 0 | |
| Time limit of input | Three-digit integer | Second of | R408 | 0～999 | 20 |
| Time limit for exit | Three-digit integer | Second of | R409 | 0～999 | 20 |
| In the starting-up process | |||||
| Whether or not to judge the position of the guide vane | Yes/no | R410 | 1/0 | 1 | |
| Whether or not to judge the cooling water | Yes/no | R411 | 1/0 | 1 | |
| Whether or not to judge the braking position | Yes/no | R412 | 1/0 | 1 | |
| Whether or not to judge the position of the main valve | Yes/no | R413 | 1/0 | 1 | |
| Time limit for increasing rotating speed to 95% | Three-digit integer | Second of | R414 | 0～999 | 120 |
| Initial active power after grid connection | Three-digit integer | % | R415 | 0～100 | 10 |
| Initial reactive power after grid connection | Three-digit integer | % | R416 | 0～100 | 10 |
| In the shutdown process | |||||
| Whether to brake back or not | Yes/no | R417 | 1/0 | 1 | |
| Whether or not to turn off the cooling water | Yes/no | R418 | 1/0 | 1 | |
| Time limit for reducing load | Three-digit integer | Second of | R419 | 0～999 | 120 |
| Rotational speed of the brake | Three-digit integer | % | R420 | 0～100 | 35 |
| Time limit of rotation speed reduction | Three-digit integer | Second of | R421 | 0～999 | 180 |
| Brake release delay | Three-digit integer | Second of | R422 | 0～999 | 30 |
| Vane position signal | BOOL type | I0021 | 0、1 | ||
| Boiled cooling water control signal | BOOL type | Q15 | 0、1 | ||
| Cooling water status signal | BOOL type | I0016 | 0、1 | ||
| Cooling water state signal (reverse) | BOOL type | I0017 | 0、1 | ||
| Brake release control signal | BOOL type | Q14 | 0、1 | ||
| Brake on/off state signal | BOOL type | I0010 | 0、1 | ||
| Brake on/off state signal (reverse) | BOOL type | I0011 | 0、1 | ||
| Control signal for opening and closing main valve | BOOL type | Q17 | 0、1 | ||
| Main valve switch state signal | BOOL type | I0018 | 0、1 | ||
| Main valve switch state signal (reverse) | BOOL type | I0019 | 0、1 | ||
| Starting control signal of speed regulator | BOOL type | Q8 | 0、1 | ||
| Active and reactive power regulation switching control signal of unit | Integer number of | PQ_STATE | 0、3 | ||
| Active set value of unit | Four bit integer | P_SET | 0-1000 | ||
| Reactive set value of unit | Four bit integer | Q_SET | 0-1000 | ||
| Governor shutdown control signal | BOOL type | Q9 | 0、1 | ||
| Braking control signal | BOOL type | Q13 | 0、1 | ||
| Speed of rotation of the machine set<5% | BOOL type | N5 | 0、1 | ||
| Off cooling water control signal | BOOL type | Q16 | 0、1 |
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The method for simplifying the automatic control flow configuration of the low-voltage unit is characterized by comprising a human-computer interaction module and a software flow program, wherein the human-computer interaction module comprises a controller, a serial port, a human-computer interface, the low-voltage unit and a monitoring upper computer; the software flow program comprises a starting-up flow module and a stopping flow module, and the starting-up flow module and the stopping flow module are downloaded and stored in a flow parameter storage area of the controller;
programming a preset starting-up flow module and a preset stopping flow module, wherein the judging steps in the starting-up flow module and the stopping flow module are controlled through flow parameter variables;
a user sets a process parameter variable through a human-computer interface, and the process parameter variable is downloaded into a process parameter storage area after the process parameter variable is set;
the starting-up flow module comprises the following steps:
inputting values of process parameter variables X4, Q14, Q15, Q16, Q17, Q18, R401=0, R402, R404, R405, R406, R407, R409, R410, R411, R412, R413, R414, R417, R418, R419, R420, R421, I0021, I0010, I0011, I0016, I0017, I0018, I0019, JZ _ F, reactive power regulation function input PQ _ STATE, active power setting value P _ SET =0, reactive power setting value Q _ SET =0, P _ INIT and Q _ INIT in a human-computer interface;
step one, judging whether the guide vane position is determined: reading the value of R410 in the process parameter storage area, judging the position of the guide vane if the value of R410 is 1, then judging whether the guide vane is completely closed, if the process parameter variable I0021=1 is true, indicating that the guide vane is completely closed, and jumping to the step two; if the R410 value is 0, the guide vane position is not judged, and the step II is skipped;
if the process parameter variable I0021=1 is false, it indicates that the guide vane is not fully closed, and the human-computer interface displays that "the startup condition is not satisfied: when the guide vane is not completely closed, the process is exited, and the program operation is finished;
step two, reading the value of R404, if the value of R404 is 1, starting cooling water, namely keeping the cooling water, starting the cooling water, and jumping to the step three after the flow parameter variable Q15= 1; if the value of R404 is 0, indicating that the on cooling water is not the hold type on, the human-machine interface displays "on cooling water pulse (Q15,5000)" and jumps to step three;
the starting-up flow module comprises the following steps:
step three, judging whether the cooling water is fully boiled: reading the value of R411, if the value of R411 is 1, judging that the cooling water is fully opened, and if the cooling water is fully opened, jumping to the step four; if the value of R411 is 0, which means that the cooling water is not judged to be fully opened, Q15=0 and the process skips to step five;
step four, judging whether the cooling water is fully boiled: if the variable I0016 is 1 and the variable I0017 is 0, indicating that the cooling water is fully opened, clearing an opening point Q15=0, and jumping to the fifth step; if the condition that the variable I0016 is 1 or the condition that the variable I0017 is 0 is not met, the cooling water is not fully opened, then circularly judging whether the condition that the variable I0016 is 1 and the variable I0017 is 0 is met within R405 seconds, if the condition that the variable I0016 is 1 and the variable I0017 is 0 is not met within R405 seconds, the man-machine interface displays 'overtime, water supply fault' and the flow exits: q15=0 ", the flow exits, and the program operation ends; if the condition that the variable I0016 is 1 and the variable I0017 is 0 is met in R405 seconds, the cooling water is fully opened, the clearing point Q15=0, and the step five is skipped;
step five, judging whether the back braking is the hold type opening: reading the value of the R407 value, if the value of the R407 is 0, indicating that the brake release is not the hold-type opening, displaying 'brake release pulse (Q14,5000)' on the human-computer interface, and jumping to the step six; if the value of R407 is 1, indicating that the reverse braking is hold-type open-brake-release, then the brake is released, Q14=1, and the process jumps to step six;
the starting-up flow module comprises the following steps:
step six, judging whether the braking exit position is: reading the value of R412, if R412=0 and the brake exit position is not judged, clearing the open point Q14=0, and jumping to the step eight; if R412=1, the brake exit position is judged, and the step jumps to the step seven;
step seven, judging whether the brake is quitted: if the variable I0010 is 0 and the variable I0011 is 0, the condition is satisfied, that the braking is exited, the open point Q14=0 is cleared, and the step eight is skipped; if the condition that the variable I0010 is 0 and the variable I0011 is 0 is not met, indicating that braking does not exit, circularly judging whether the variable I0010 is 0 and the variable I0011 is 0 within R409 seconds, and if the condition that the variable I0010 is 0 and the variable I0011 is 0 within R409 seconds is not met, indicating that braking does not exit, displaying that the starting condition is not met by the human-computer interface: braking is not withdrawn; q14=0 ", the flow exits, and the program operation ends; if the variable I0010 is 0 and the variable I0011 is 0 within the R409 seconds, clearing an opening point Q14=0, and jumping to the step eight;
the starting-up flow module comprises the following steps:
step eight, judging whether the opening main valve is a holding type opening: reading the value of R401, if R401 is 0, indicating that the open main valve is not the hold-type open, displaying the open main valve (Q17, 5000) on the human-computer interface, and jumping to the step nine; if R401 is 1, indicating that the open main valve is the hold open, the main valve is opened, Q17=1, and the process goes to step nine;
step nine, judging whether the main valve is at the full-open position: reading the value of R413, if R413=0 indicates that the full-open position of the main valve is not judged, Q17=0, displaying 'governor starting pulse (Q8, 5000)' on a human-computer interface, and jumping to the step eleven; if R413=1, indicating that the main valve full open position is determined, jumping to step ten;
the starting-up flow module comprises the following steps:
step ten, judging whether the main valve is fully opened: if the conditions that I0018 is 1 and the variable I0019 is 0 are met, the main valve is fully opened, Q17=0, the human-computer interface displays 'governor starting pulse (Q8, 5000)', and the step eleven is skipped; if the condition that I0018 is 1 and the variable I0019 is 0 is not met, indicating that the main valve is not fully opened, judging whether I0018 is 1 and the variable I0019 is 0 or not in a loop of R402 seconds, if the condition that I0018 is 1 and the variable I0019 is 0 is not met within the R402 seconds, indicating that the main valve is not fully opened, displaying' the main valve fully opened failure by the human-computer interface, and exiting the process: q17=0 ", the process exits, the program operation is ended, if the conditions that I0018 is 1 and the variable I0019 is 0 are met within R402 seconds, the main valve is fully opened, Q17=0, the human-computer interface displays" governor startup pulse (Q8, 5000) ", and the step eleven is skipped;
step eleven, judging whether the rotational speed of the casting brake is greater than 95% of the maximum rotational speed of the casting brake or not, reading the value of R414, if the value of R414 is not greater than 95% of the maximum rotational speed of the casting brake, circularly judging whether JZ _ F is greater than or equal to 4750 or not in X4 seconds to be true, if the JZ _ F is greater than or equal to 4750 and still false in X4 seconds to indicate that the rotational speed of the casting brake is not increased to 95% of the full speed, displaying that the rotational speed is less than 95% in a human-computer interface, exiting the process, ending the program operation, and jumping to step twelve if the JZ _ F is judged to be true in X4 seconds to circularly judge that JZ _ F is greater than or equal to 4750; if the value of R414 is greater than 95% of the maximum speed of the brakes, jumping to step twelve;
step twelve, with base charge, PQ _ STATE =3, P _ SET = P _ INIT, Q _ SET = Q _ INIT.
2. The method of claim 1, wherein the shutdown flow module comprises the following steps:
step thirteen, load reduction time limit, defining PQ _ STATE =3, P _ SET =0, and Q _ SET = 0;
judging whether the load of the unit is reduced to be below 5 percent: if the load of the unit is reduced to be below 5%, displaying 'speed governor stopping pulse (Q5,5000)' on the human-computer interface, and jumping to the step fourteen; if the load of the unit is not reduced to be below 5%, performing loop detection in R419 seconds to judge whether the load of the unit is reduced to be below 5%, if the load of the unit is not reduced to be 5% in R419 seconds, displaying that the power of the unit is not reduced, the process is exited, Q18=0, the process is exited, the program is run to the end, and if the load of the unit is detected to be below 5% in R419 seconds, displaying that the speed governor is stopped and pulse (Q5,5000) on the human-machine interface, and jumping to a step fourteen;
step fourteen, judging whether the rotational speed of the braking is reduced to be less than R421 percent: if the rotating speed of the throwing brake is reduced to be lower than R421%, jumping to a step fifteen; if the rotating speed of the casting brake is not reduced to be lower than R421%, performing cycle detection in R421 seconds to judge whether JZ _ F is less than or equal to 50 multiplied by R421, if JZ _ F is less than or equal to 50 multiplied by R421 in R421 seconds, jumping to step fifteen, if JZ _ F is less than or equal to 50 multiplied by R421 in R421 seconds, displaying 'the rotating speed of the unit is not reduced, the process exits', Q18=0, the process exits, and the program runs;
and a fifteenth step of judging whether the braking is kept-type starting: reading a value of R407, if R407=1 indicates that the brake application is hold-type opening, then the brake application is performed, an opening point Q13 is set to be 1, Q13=0 is delayed for X7 seconds, and the operation jumps to step sixteen; reading the value of R407, if R407=0 indicates that the brake application is not the hold type on, displaying "brake application pulse (Q13, 5000)" on the human-computer interface, delaying for X7 seconds until Q13=0, and jumping to step sixteen;
the shutdown flow module comprises the following steps:
sixthly, judging whether the rotational speed of the braking is reduced to be below 5 percent: if the rotating speed of the braking is reduced to be below 5%, jumping to a seventeenth step; if the rotating speed of the braking is not reduced to be below 5%, whether the rotating speed of the unit is less than 5% is judged, and if the rotating speed of the unit is less than 5%, the man-machine interface displays that the rotating speed is reduced to be less than 5%, and the process is exited: q14=0 ", Q18=0, the process exits, the procedure finishes running;
seventhly, judging whether braking is released: reading the value of R417, and jumping to a step twenty if R417=0 indicates that the brake is not backing; if R417=1 indicates that braking is off, jumping to eighteen steps;
eighteen, judging whether the back braking is the hold type opening: reading the value of R407, if R407=1 indicates that the brake release is the hold-type open, then the brake release is performed, Q14=1, and the procedure jumps to the nineteen step; if R407=0 indicates that the brake release is not the hold-type-on, the human-machine interface displays "brake release pulse (Q14, 5000)", and the process skips to step nineteen;
the shutdown flow module comprises the following steps:
step nineteen, judging whether the brake is quitted: if the condition that the variable I0010 is 0 and the variable I0011 is 1 is met, the braking is exited, Q14=0, and the step twenty is skipped; if the braking is not exited, circularly judging whether the condition that the variable I0010 is 0 and the variable I0011 is 1 is met within R409 seconds, if the condition that the variable I0010 is 0 and the variable I0011 is 1 is met within R409 seconds indicates that the braking is exited, clearing an exit point Q14, and skipping to the twenty step, wherein Q14= 0; if the variable I0010 is 0 and the variable I0011 is 1 in R409 seconds, the condition is not met all the time, that the brake is not detected to be withdrawn, the man-machine interface displays 'brake withdrawal failure and process alarm', the departure point Q14 is cleared, Q14=0, and the step twenty is skipped;
twenty, judging whether the cooling water is turned off: if R418=0 indicates that the cooling water is not turned off, the flow is exited, and the program is finished to run; if R418=1, the cooling water is turned off, jumping to the step two and the step one;
the shutdown flow module comprises the following steps:
step two, judging whether the cooling water is kept to be turned on or not: if R404=1 indicates that the cooling water is kept on, the cooling water is turned off, Q16=1, and the step two is skipped; if R404=0 indicates that the cooling water is not kept on, the human-computer interface displays "off cooling water pulse (Q16,5000)", and the step two is skipped;
step two, judging whether the cooling water is completely closed: if the condition that the variable I0016 is 0 and the variable I0017 is 1 is met, the cooling water is completely turned off, Q16 and Q18 are cleared, Q16=0, Q18=0, the process is exited, and the program is finished; if the cooling water is not completely closed, circularly judging whether the conditions that the variable I0016 is 0 and the variable I0017 is 1 are met within R406 seconds, if the conditions that the variable I0016 is 0 and the variable I0017 is 1 are met within R406 seconds, indicating that the cooling water is completely closed, clearing the switches Q16 and Q18, Q16=0, Q18=0, exiting the process, and ending the operation of the program; if the condition that the variable I0016 is 0 and the variable I0017 is 1 is not met all the time within the R406 seconds, the man-machine interface displays that the cooling water is failed to be turned off and the process is alarmed, Q16=0 and Q18=0, the process is exited, and the program is finished running.
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