CN113268041A - Rectification system starting control method and system based on DCS (distributed control system) - Google Patents
Rectification system starting control method and system based on DCS (distributed control system) Download PDFInfo
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- CN113268041A CN113268041A CN202110479772.8A CN202110479772A CN113268041A CN 113268041 A CN113268041 A CN 113268041A CN 202110479772 A CN202110479772 A CN 202110479772A CN 113268041 A CN113268041 A CN 113268041A
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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
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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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
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33273—DCS distributed, decentralised controlsystem, multiprocessor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention belongs to the technical field of rectification system control, and provides a rectification system starting control method based on a DCS (distributed control system), which comprises the following steps of: s1, informing an electric operator to turn on a high-voltage switch through a DCS system output signal; s2, the interlocking of the rectification system is opened through the DCS system, and the stop signal is reset; s3, detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system; s4, when the rectifying system meets the start standard, sending a start signal to the rectifying system through the DCS system, and then receiving a rectifying system operation signal sent by the rectifying system; and S5, adjusting the parameters of the rectifying system through the PLC to enable the rectifying system to normally operate. The invention also provides a rectification system starting control system based on the DCS, and the rectification system starting control system has the advantages that one-key starting of the rectification system is realized, operation and working conditions of a field water pump, a direct current knife and the like can be automatically judged, and the working efficiency of personnel is improved.
Description
Technical Field
The invention relates to the technical field of rectification system control, in particular to a rectification system starting control method and system based on a DCS (distributed control system).
Background
The rectification system comprises an electrolysis rectification system which is mainly used for the production of chemicals. In the production process of chemicals, the electrolysis rectification system needs to control the electrolysis process through the current magnitude, so that the production quality of the chemicals is ensured.
At present, a rectifying system is manually started and stopped, manual operation is needed on the spot, and the judgment condition for starting and stopping is complex, so that the judgment error of the starting and stopping condition often occurs in the manual operation process, the production efficiency of the rectifying system and the whole production line is low, and the fault is easy to occur.
Disclosure of Invention
The invention aims to provide a rectification system starting control method based on a DCS (distributed control system), which is used for solving the problems of inaccurate starting control and low starting efficiency of the rectification system.
In order to achieve the purpose, the invention adopts the technical scheme that:
a starting control method of a rectification system based on a DCS comprises the following steps:
s1, informing an electric operator to turn on a high-voltage switch through a DCS system output signal;
s2, the interlocking of the rectification system is opened through the DCS system, and the stop signal is reset;
s3, detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system;
s4, when the rectifying system meets the start standard, sending a start signal to the rectifying system through the DCS system, and then receiving a rectifying system operation signal sent by the rectifying system;
and S5, adjusting the parameters of the rectifying system through the PLC to enable the rectifying system to normally operate.
Further, step S3 specifically includes:
s31, sending a driving button signal to a PLC (programmable logic controller) of the rectification system through a DCS (distributed control system);
s32, after receiving the start button signal, the PLC detects whether the rectifying system meets the start standard according to the preset process condition;
and S33, when the rectification system meets the driving standard, the PLC feeds back the detection result of the rectification system to the DCS.
Further, step S5 specifically includes:
s51, after receiving the rectification operation signal, the DCS automatically puts into interlocking;
and S52, setting the current setting rate and the current value of the rectifying system through the DCS system and confirming for the second time, so that the current of the rectifying system automatically rises and falls according to the given current value.
Further, the step S52 of automatically raising and lowering the current of the rectifier system according to the given current value includes the specific steps of:
s521, setting a given current rate and a given current value of a rectification system through a DCS and confirming for the second time;
s522, sending the given current and the given current rate received by the DCS to a rectification system, and judging the deviation of the current actual current and the given current value by the PLC;
and S523, automatically lifting the current according to the current given speed through the PLC.
The present invention also provides a start control system for a rectification system based on a DCS system, comprising:
the output notification module is used for notifying electrical operators to turn on the high-voltage switch through a DCS system output signal;
the interlocking release module is used for opening the interlocking of the rectification system through the DCS and resetting a stop signal;
the driving standard detection module is used for detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system;
the operation module is used for sending a driving signal to the rectification system through the DCS system when the rectification system meets the driving standard and then receiving a rectification system operation signal sent by the rectification system;
and the adjusting module is used for adjusting the parameters of the rectifying system through the PLC controller so that the rectifying system can normally operate.
Further, the driving standard judging module comprises:
the driving button signal output unit is used for sending a driving button signal to a PLC (programmable logic controller) of the rectification system through a DCS (distributed control system);
the detection unit is used for detecting whether the rectifying system meets the driving standard or not according to preset process conditions after the PLC receives the driving button signal;
and the detection feedback unit is used for feeding back the detection result of the rectification system to the DCS when the rectification system meets the driving standard.
Further, the adjusting module specifically includes:
the interlocking input unit is used for automatically inputting interlocking by the DCS after receiving the rectifying operation signal;
and the current lifting unit is used for setting the given current rate and the given current value of the rectifying system through the DCS and carrying out secondary confirmation, so that the current of the rectifying system can be automatically lifted according to the given current value.
Further, the current setting unit includes:
the current setting subunit is used for setting the given current rate and the given current value of the rectifying system through the DCS system and carrying out secondary confirmation;
the current judging subunit is used for sending the given current and the given current rate received by the DCS to the rectifying system, and the PLC judges the deviation between the current actual current and the given current value;
and the current automatic lifting subunit is used for automatically lifting the current according to the current given speed through the PLC.
Compared with the prior art, the invention at least comprises the following beneficial effects:
(1) the invention can realize one-key starting of the rectification system, so that an operator in the process can drive the rectification system at the background of the DCS, can automatically judge the operation and working conditions of a field water pump, a direct current knife and the like, and improves the working efficiency of the operator;
(2) the invention realizes the unified operation and control of the plurality of electrolytic bath rectification systems by the DCS system.
Drawings
FIG. 1 is a general flow chart of a first embodiment of the present invention;
FIG. 2 is a flowchart of step S3 according to an embodiment of the present invention;
FIG. 3 is a flowchart of step S5 according to an embodiment of the present invention;
FIG. 4 is a flowchart of step S52 according to an embodiment of the present invention;
FIG. 5 is a general framework diagram of the second embodiment of the present invention;
FIG. 6 is a schematic diagram of a framework of a second determination module for a start-up standard according to the second embodiment of the present invention;
FIG. 7 is a schematic diagram of a frame of a conditioning module according to a second embodiment of the present invention;
fig. 8 is a schematic diagram of a framework of a current setting unit according to a second embodiment of the invention.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1, the start control method of a rectification system based on a DCS system of the present invention includes the steps of:
s1, informing an electric operator to turn on a high-voltage switch through a DCS system output signal;
s2, the interlocking of the rectification system is opened through the DCS system, and the stop signal is reset;
s3, detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system;
s4, when the rectifying system meets the start standard, sending a start signal to the rectifying system through the DCS system, and then receiving a rectifying system operation signal sent by the rectifying system;
and S5, adjusting the parameters of the rectifying system through the PLC to enable the rectifying system to normally operate.
Further, as shown in fig. 2, step S3 specifically includes:
s31, sending a driving button signal to a PLC (programmable logic controller) of the rectification system through a DCS (distributed control system);
s32, after receiving the start button signal, the PLC detects whether the rectifying system meets the start standard according to the preset process condition;
and S33, when the rectification system meets the driving standard, the PLC feeds back the detection result of the rectification system to the DCS.
In the specific operation process, the DCS system operator clicks a 'start-up' button, and the PLC of the rectification system sequentially judges the start-up condition and executes the action after receiving the 'one-key start-up' signal.
The specific driving judgment is to sequentially perform the following procedures: the process conditions are met; detecting whether a water pump of the water purification unit is started, and if not, starting the water pump of the water purification unit; detecting whether the water pressure of the pure water is more than or equal to 0.08 Mpa; detecting whether the positive and negative direct current knives are closed, if not, closing the positive knife and then closing the negative knife; detecting that the direct current transformer is normal; detecting that the high-voltage switch is in a closed-position system to carry out self-reset on the fault; detecting no "lock pulse fault"; detecting no "trip fault"; the channel A is given to return to zero; the B channel is given a return to zero.
Under the condition that the detection is normal, the PLC controller feeds back a rectifier preparation OK signal of the DCS; otherwise, a "rectifier fault" signal is fed back.
Further, as shown in fig. 3, step S5 specifically includes:
s51, after receiving the rectification operation signal, the DCS automatically puts into interlocking; (ii) a
And S52, setting the current setting rate and the current value of the rectifying system through the DCS system and confirming for the second time, so that the current of the rectifying system automatically rises and falls according to the given current value.
In the specific operation process, after receiving the rectifier preparation OK signal, the DCS sends a pulse closing signal and an automatic reset starting signal to the rectifier system. When the DCS system receives a 'rectifier fault' signal, the DCS system provides an electric operator for troubleshooting.
When the DCS system receives a 'rectifier running' signal later and the 'rectifier stopping' signal disappears, the DCS system automatically puts into corresponding interlocking;
further, as shown in fig. 4, the step S52 of automatically raising and lowering the current of the rectifier system according to the given current value includes the specific steps of:
s521, setting a given current rate and a given current value of a rectification system through a DCS and confirming for the second time;
s522, sending the given current and the given current rate received by the DCS to a rectification system, and judging the deviation of the current actual current and the given current value by the PLC;
and S523, automatically lifting the current according to the current given speed through the PLC.
In the invention, the sequential control operation of the rectification system is realized by adding logic judgment of one-key driving operation and logic control of automatic lifting current in the PLC.
The invention realizes one-key starting of the rectification system, enables an operator in the process to start the rectification system at the background of the DCS system, can automatically judge the operation and working conditions of a field water pump, a direct current knife and the like, improves the working efficiency of the operator, and can find faults existing in the rectification system in time.
Example two
As shown in fig. 5, the start control system of a rectification system based on a DCS system of the present invention includes:
the output notification module is used for notifying electrical operators to turn on the high-voltage switch through a DCS system output signal;
the interlocking release module is used for opening the interlocking of the rectification system through the DCS and resetting a stop signal;
the driving standard detection module is used for detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system;
the operation module is used for sending a driving signal to the rectification system through the DCS system when the rectification system meets the driving standard and then receiving a rectification system operation signal sent by the rectification system;
and the adjusting module is used for adjusting the parameters of the rectifying system through the PLC controller so that the rectifying system can normally operate.
As shown in fig. 6, the driving standard determination module includes:
the driving button signal output unit is used for sending a driving button signal to a PLC (programmable logic controller) of the rectification system through a DCS (distributed control system);
the detection unit is used for detecting whether the rectifying system meets the driving standard or not according to preset process conditions after the PLC receives the driving button signal;
and the detection feedback unit is used for feeding back the detection result of the rectification system to the DCS when the rectification system meets the driving standard.
As shown in fig. 7, the adjusting module specifically includes:
the interlocking input unit is used for automatically inputting interlocking by the DCS after receiving the rectifying operation signal;
and the current lifting unit is used for setting the given current rate and the given current value of the rectifying system through the DCS and carrying out secondary confirmation, so that the current of the rectifying system can be automatically lifted according to the given current value.
As shown in fig. 8, the current setting unit includes:
and the current setting subunit is used for setting the given current rate and the given current value of the rectifying system through the DCS system and performing secondary confirmation.
The current judging subunit is used for sending the given current and the given current rate received by the DCS to the rectifying system, and the PLC judges the deviation between the current actual current and the given current value;
and the current automatic lifting subunit is used for automatically lifting the current according to the current given speed through the PLC.
The invention realizes one-key starting of the rectification system, enables an operator in the process to start the rectification system at the background of the DCS system, can automatically judge the operation and working conditions of a field water pump, a direct current knife and the like, improves the working efficiency of the operator, and can find faults existing in the rectification system in time.
The invention also can carry out unified operation control on the rectification systems of the plurality of electrolytic tanks according to the operation judgment conditions of different rectification systems through the DCS, thereby improving the working efficiency of personnel and ensuring the stability of the rectification systems.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. A starting control method of a rectification system based on a DCS is characterized by comprising the following steps:
s1, informing an electric operator to turn on a high-voltage switch through a DCS system output signal;
s2, the interlocking of the rectification system is opened through the DCS system, and the stop signal is reset;
s3, detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system;
s4, when the rectifying system meets the start standard, sending a start signal to the rectifying system through the DCS system, and then receiving a rectifying system operation signal sent by the rectifying system;
and S5, adjusting the parameters of the rectifying system through the PLC to enable the rectifying system to normally operate.
2. The method for controlling starting of a rectification system based on a DCS system of claim 1, wherein step S3 specifically includes:
s31, sending a driving button signal to a PLC (programmable logic controller) of the rectification system through a DCS (distributed control system);
s32, after receiving the start button signal, the PLC detects whether the rectifying system meets the start standard according to the preset process condition;
and S33, when the rectification system meets the driving standard, the PLC feeds back the detection result of the rectification system to the DCS.
3. The method for controlling starting of a rectification system based on a DCS system of claim 1, wherein step S5 specifically includes:
s51, after receiving the rectification operation signal, the DCS automatically puts into interlocking;
and S52, setting the current setting rate and the current value of the rectifying system through the DCS system and confirming for the second time, so that the current of the rectifying system automatically rises and falls according to the given current value.
4. The DCS-based rectification system starting control method according to claim 3, wherein the step of automatically raising and lowering the current of the rectification system according to the given current value in the step S52 comprises the specific steps of:
s521, setting a given current rate and a given current value of a rectification system through a DCS and confirming for the second time;
s522, sending the given current and the given current rate received by the DCS to a rectification system, and judging the deviation of the current actual current and the given current value by the PLC;
and S523, automatically lifting the current according to the current given speed through the PLC.
5. A rectification system start control system based on a DCS system is characterized by comprising:
the output notification module is used for notifying electrical operators to turn on the high-voltage switch through a DCS system output signal;
the interlocking release module is used for opening the interlocking of the rectification system through the DCS and resetting a stop signal;
the driving standard detection module is used for detecting whether the rectification system meets the driving standard or not through a PLC (programmable logic controller) of the rectification system;
the operation module is used for sending a driving signal to the rectification system through the DCS system when the rectification system meets the driving standard and then receiving a rectification system operation signal sent by the rectification system;
and the adjusting module is used for adjusting the parameters of the rectifying system through the PLC controller so that the rectifying system can normally operate.
6. The DCS-based rectification system starting control system of claim 5, wherein the driving standard judging module comprises:
the driving button signal output unit is used for sending a driving button signal to a PLC (programmable logic controller) of the rectification system through a DCS (distributed control system);
the detection unit is used for detecting whether the rectifying system meets the driving standard or not according to preset process conditions after the PLC receives the driving button signal;
and the detection feedback unit is used for feeding back the detection result of the rectification system to the DCS when the rectification system meets the driving standard.
7. The DCS-based rectification system starting control system of claim 5, wherein the adjusting module specifically comprises:
the interlocking input unit is used for automatically inputting interlocking by the DCS after receiving the rectifying operation signal;
and the current lifting unit is used for setting the given current rate and the given current value of the rectifying system through the DCS and carrying out secondary confirmation, so that the current of the rectifying system can be automatically lifted according to the given current value.
8. The DCS-based rectification system starting control system of claim 7, wherein the current setting unit comprises:
the current setting subunit is used for setting the given current rate and the given current value of the rectifying system through the DCS system and carrying out secondary confirmation;
the current judging subunit is used for sending the given current and the given current rate received by the DCS to the rectifying system, and the PLC judges the deviation between the current actual current and the given current value;
and the current automatic lifting subunit is used for automatically lifting the current according to the current given speed through the PLC.
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