CN103324162A - Optimum control method of three operating devices - Google Patents
Optimum control method of three operating devices Download PDFInfo
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- CN103324162A CN103324162A CN2013101960206A CN201310196020A CN103324162A CN 103324162 A CN103324162 A CN 103324162A CN 2013101960206 A CN2013101960206 A CN 2013101960206A CN 201310196020 A CN201310196020 A CN 201310196020A CN 103324162 A CN103324162 A CN 103324162A
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Abstract
The invention belongs to the technical field of the optimum control strategy of systems of operating devices, and relates to an optimum control method of three operating devices, in particular to an operating method of the system containing three or less operating devices in normal operation conditions and other emergent operation conditions, and particularly in dangerous operation conditions or special operation conditions. The optimum control method of the three operating devices relates to the three operating devices and a DCS control system, comprises a control method of the system provided with three operating devices and a control method of the system provided with two operating devices. The optimum control method of the three operating devices can be applied to any DSC control system and a PLC control system. According to the control strategy, a corresponding operating scheme which is best in environment protection and energy conversation, safe and reliable is selected according to the actual operation conditions, manpower resource consumption is reduced, accidents such as chain faults among the devices in the system are avoided, an operating system high in efficiency and low in cost is achieved, the automation degree of the system is improved, economic cost is greatly reduced, and application prospect is wide.
Description
The invention belongs to the technical field of optimal control policy of the system of operational outfit, the method for optimally controlling that relates to three operational outfits, comprise the system of three and three following operational outfits under nominal situation and other emergency work conditions, the operation method under especially relatively dangerous or special operating mode or the special operating mode.
Background technology
The system that comprises three operational outfits, for example: three oil feed pumps of boiler fuel oil pump house system, the a lot of systems of three water circulating pumps of circulation and three condensate transfer pumps of condensate system etc., these all are critical systems, must guarantee that it safely and steadily runs, normal high load working condition, generally all be two equipment operations, all the other equipment sparings, but in the actual production operational process, there are a lot of small load conditions, only need equipment of operation just, all the other two equipment sparings had so both satisfied need of production, saved again equipment and the energy.Present system's great majority are only considered the actual condition of " dual-purpose is standby "; often ignore low or every the operational outfit top hole pressure of outlet main-piping pressure when low; protection system how; and the actual operating mode of " usefulness two is standby " under the small load condition; even considered; the interlock logic of whole system neither be too comprehensive; the perhaps very very complicated done of logical relation; in different control system; tend to because factors such as execution time of functional block or performance periods, and affect result's accuracy, cause in actual motion; connection between the equipment opens failure or mistake joins other equipment; even cause the phenomenon such as system's chaser, perhaps directly the people is not to cause inefficiency for manual operation etc.; the waste resource; affect exactly the safe and stable operation of whole system, greatly reduce the system automation degree.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, a kind of method for optimally controlling of three operational outfits is provided, is the optimal control policy that comprises the system of three and three following operational outfits.Its objective is for the assurance system can both carry out safely according to the actual motion requirement under any operating mode, stable, reliable, economic, the efficient operation, improve automaticity, reduce the participation of human factor, also avoided simultaneously the generation of the accidents such as mistake connection between the devices in system, eliminate potential safety hazard, improved work efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
The method for optimally controlling of three operational outfits comprises three operational outfits and DCS control system; Comprise: represent the input signal of equipment state, realize the mutual collocation of the logical symbol of exercises relation, and the selection of various time function pieces, can send instruction and allow the output signal of device action;
Represent the input signal of equipment state, comprising: represent the switching value input signal of equipment state in any DCS control system and the PLC control system, i.e. digital quantity input signal, common form has two kinds: with 0,1 expression;
Realize the mutual collocation of the logical symbol of exercises relation, comprise: control strategy has provided the curing pattern in the accompanying drawings, and relational symbol wherein comprises with it identical logical operator of presentation logic relation in any DCS control system and the PLC control system;
The selection of various time function pieces comprises: the collocation position of various time function pieces and the selection of type comprise with it identical logical operator of function in any DCS control system and the PLC control system;
Can send instruction and allow the output signal of device action, comprising: representative can be sent the switching value output signal of device directive in any DCS control system and the PLC control system, i.e. digital output signal, and common form has two kinds: represent with 0,1.
The method for optimally controlling of three operational outfits comprises: have three operational outfits system control method and have the control method of the system of two operational outfits; Described DCS control system comprises: the dark control system of state's electricity intelligence, ABB control system, Hollysys's control system, FOXBRO control system, Siemens control system, OVATION control system and PLC control system.
The selection of described various time function pieces, change by the subtraction block to the comparing function of operational outfit working time, both can realize that the equipment that working time is long was as preferential equipment for subsequent use, can realize that also the equipment that working time is shorter is as preferential equipment for subsequent use, also " button " can be redefined simultaneously, both can realize according to resetting working time, can realize also that according to the time people to overhaul of the equipments be hand-reset.
The outlet main-piping pressure of described DCS control system redefines definite value 1 according to the operational factor of real system, and delay time is also according to the interlock time under system's actual condition delay function piece 1 being redefined.
The top hole pressure of each operational outfit is according to the operational factor of real system in the described DCS control system, definite value 2, definite value 3, definite value 4 are redefined, and delay time is also according to the interlock time under system's actual condition delay function piece 2 and delay function piece 3 being redefined.
The running program that described user uses is: the first step, according to the type of used control system, determine the expression mode of input signal and output signal; Second step is found out those logical operator or logic function blocks identical with this method function in the control system; In the 3rd step, the control chart that provides according to this method is entered in the present control system; In the 4th step, according to the definite value that operational factor or the equipment specification manual of real system are determined some pressure and time, system just can work.
Described control method with system of three operational outfits, when the operation of two equipment, the 3rd equipment investment is for subsequent use, if wherein a unit trip, then the 3rd equipment of chain promoter; The operation of two equipment, the 3rd equipment investment is for subsequent use, if the system outlet main-piping pressure is low, the 3rd equipment of chain promoter then; The operation of two equipment, the 3rd equipment investment is for subsequent use, if the top hole pressure of any equipment in these two equipment is low, the 3rd equipment of chain promoter then.
Described control method with system of three operational outfits, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if second equipment drops into first for subsequent use, then second equipment is preferential stand-by equipment, if operational outfit tripping operation, then second equipment of chain promoter, if second appliance boot failure, then the 3rd equipment of interlocked startup; If it is for subsequent use that the 3rd equipment drops into first, then the 3rd equipment is preferential stand-by equipment, if the operational outfit tripping operation, the 3rd equipment of chain promoter then is if the 3rd appliance boot failure, then second equipment of interlocked startup.
Described control method with system of three operational outfits, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if it is for subsequent use that second equipment drops into first, then second equipment is preferential stand-by equipment, if the outlet main-piping pressure of system is low, second equipment of chain promoter then, if second appliance boot failure or after second equipment operation the outlet main-piping pressure of system still low, then through one section time-delay, the 3rd equipment of chain promoter; If the 3rd equipment drops into first for subsequent use, then the 3rd equipment is preferential stand-by equipment, if the outlet main-piping pressure of system is low, the 3rd equipment of chain promoter then, if the 3rd appliance boot failure or after the 3rd equipment operation the outlet main-piping pressure of system still low, then through one section time-delay, second equipment of chain promoter.
Described control method with system of three operational outfits, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if second equipment drops into first for subsequent use, then second equipment is preferential stand-by equipment, if the top hole pressure of operational outfit is low, second equipment of chain promoter then, if second appliance boot failure or at the top hole pressure of operational outfit after second equipment operation still top hole pressure low or second equipment after second equipment operation is still low, then through one section time-delay, the 3rd equipment of chain promoter; If the 3rd equipment drops into first for subsequent use, then the 3rd equipment is preferential stand-by equipment, if the top hole pressure of operational outfit is low, the 3rd equipment of chain promoter then, if the 3rd appliance boot failure or at the top hole pressure of operational outfit after the 3rd the equipment operation still top hole pressure low or the 3rd equipment after the 3rd equipment operation is still low, then through one section time-delay, second equipment of chain promoter.
Advantage of the present invention and beneficial effect:
(1) reducing the people is manual operation, improves human resources utilization's efficient and work efficiency, has also improved the automaticity of system simultaneously;
(2) energy-saving and environmental protection have reduced the loss of equipment, have prolonged the serviceable life of equipment;
(3) logical action Reliability Enhancement, linkage relationship is rigorous and succinct.
The present invention can be applied in any DCS control system and PLC control system, by this control strategy, can select corresponding environmental protection, energy-conservation, safe and reliable operating scheme according to actual operating mode, reduce human resources consumption, avoid the accidents such as chain error of system's among equipment, realize high-level efficiency, operational system cheaply, improved the automaticity of system, the financial cost of its reduction and application prospect are limitless.
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d are embodiments of the invention;
Fig. 3 is the chain logic diagram of realizing the First operational outfit;
Fig. 4 is the chain logic diagram of realizing second operational outfit;
Fig. 5 is the chain logic diagram of realizing the 3rd operational outfit;
Fig. 6 is the chain logic diagram of realizing the First operational outfit;
Fig. 7 is the chain logic diagram of realizing second operational outfit;
Fig. 8 is the chain logic diagram of realizing the 3rd operational outfit.
Embodiment
The present invention is a kind of method for optimally controlling of three operational outfits, mainly be to be defined as various input signal by the various status signals equipment, these input signals through " with ", the reorganization of the logics such as "or", " non-", send instruction by output signal at last, various, complicated action relationships between the realization equipment, thus make system have various function.In use, only need to rename the name of input signal according to existing system, the logical symbol that simultaneously various relations is provided with existing system shows just passable.
The present invention includes three operational outfits and DCS control system; Comprise: represent the input signal of equipment state, realize the mutual collocation of the logical symbol of exercises relation, and the selection of various time function pieces, can send instruction and allow the output signal of device action;
Represent the input signal of equipment state, comprising: represent the switching value input signal of equipment state in any DCS control system and the PLC control system, i.e. digital quantity input signal, common form has two kinds: with 0,1 expression.
Represent the input signal of equipment state, instruction be can send and the output signal of device action and the selection of various time function pieces allowed, realize namely steering logic or the control thinking of mutual collocation of the logical symbol of exercises relation, input signal sends output signal by steering logic or control thinking, finally realizes the exercises relation of equipment.
Realize the mutual collocation of the logical symbol of exercises relation, comprise: control strategy has provided the curing pattern in the accompanying drawings, and relational symbol wherein comprises with it identical logical operator of presentation logic relation in any DCS control system and the PLC control system.
The selection of various time function pieces comprises: the collocation position of various time function pieces and the selection of type comprise with it identical logical operator of function in any DCS control system and the PLC control system.
Can send instruction and allow the output signal of device action, comprising: representative can be sent the switching value output signal of device directive in any DCS control system and the PLC control system, i.e. digital output signal, and common form has two kinds: represent with 0,1.
The present invention includes the control method of the system with three operational outfits and have the control method of the system of two operational outfits; Described DCS control system comprises: the dark control system of state's electricity intelligence, ABB control system, Hollysys's control system, FOXBRO control system, Siemens control system, OVATION control system and PLC control system.
The running program that user of the present invention uses is:
The first step according to the type of used control system, is determined the expression mode of input signal and output signal;
Second step is found out those logical operator or logic function blocks identical with this method function in the control system;
In the 3rd step, the control chart that provides according to this method is entered in the present control system;
In the 4th step, according to the definite value that operational factor or the system specification of real system are determined some pressure and time, system just can work.
Embodiment 1:
As shown in Figure 1, Fig. 1 is structural representation of the present invention.Be that three which platforms of equipment drop into first for subsequent use, then which platform equipment is exactly preferential stand-by equipment, if under the operating mode of " usefulness two is standby ", at first the equipment of chain promoter is preferential stand-by equipment, if preferential stand-by equipment has problem or starts unsuccessfully, another input of chain promoter equipment for subsequent use then.
Embodiment 2:
Shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d, Fig. 2 a-Fig. 2 d is embodiments of the invention.What Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d realized is which platform equipment investment is preferentially for subsequent use between the operational outfit.Different from Fig. 1 is, and what to realize is according to selecting the working time of operational outfit, i.e. the selection of described various time function pieces, and which platform operation hours is short, and which platform equipment is exactly preferential stand-by equipment.Namely can to decide which platform according to length working time of equipment be preferential stand-by equipment to three equipment, such as: device A 100s working time, equipment B 120s working time, equipment C 90s working time, so when device A is moved, other two equipment all drop into for subsequent use, no matter which platform equipment drops into first for subsequent use, so preferential equipment for subsequent use all is equipment C, because its working time is short, simultaneously, can also be by the modification to subtraction block, realize selecting the long preferential equipment for subsequent use of equipment conduct working time, the serviceable life that can improve like this equipment.
The selection of described various time function pieces, change by the subtraction block to the comparing function of operational outfit working time, both can realize that the equipment that working time is long was as preferential equipment for subsequent use, can realize that also the equipment that working time is shorter is as preferential equipment for subsequent use, also " button " can be redefined simultaneously, both can realize according to resetting working time, can realize also that according to the time people to overhaul of the equipments be hand-reset.
Embodiment 3:
As shown in Figure 3-Figure 5, Fig. 3 is the chain logic diagram of realizing the First operational outfit; Fig. 4 is the chain logic diagram of realizing second operational outfit; Fig. 5 is the chain logic diagram of realizing the 3rd operational outfit.What Fig. 3, Fig. 4, Fig. 5 considered is that all DCS control system only design the outlet main-piping pressure, and the outlet of each operational outfit does not have in the situation of design pressure, the chain control thinking relation in each system between each equipment.The outlet main-piping pressure of described DCS control system redefines definite value 1 according to the operational factor of real system, and delay time is also according to the interlock time under system's actual condition delay function piece 1 being redefined.
Fig. 1 is combined with Fig. 3, Fig. 4, Fig. 5, can realize which platform equipment drops into first preferentially for subsequent use, then this equipment is preferential stand-by equipment just, when system needs chain promoter, will at first chain this preferential stand-by equipment, can realize steering logic 1, steering logic 2-steering logic 9, steering logic 19-steering logic 27 in steering logic or the control thinking.
Embodiment 4:
Such as Fig. 6-shown in Figure 8, Fig. 6 is the chain logic diagram of realizing the First operational outfit; Fig. 7 is the chain logic diagram of realizing second operational outfit; Fig. 8 is the chain logic diagram of realizing the 3rd operational outfit.What Fig. 6-Fig. 8 considered is that all DCS control system only design every operational outfit top hole pressure, and does not have in the situation of design system outlet main-piping pressure the chain control thinking relation in the system between each equipment.The top hole pressure of each operational outfit is according to the operational factor of real system in the described DCS control system, definite value 2, definite value 3, definite value 4 are redefined, and delay time is also according to the interlock time under system's actual condition delay function piece 2 and delay function piece 3 being redefined.
Fig. 1 is combined with Fig. 6, Fig. 7, Fig. 8, can realize which platform equipment drops into first preferentially for subsequent use, then this equipment is preferential stand-by equipment just, when described DCS control system needs chain promoter, will at first chain this preferential stand-by equipment, can realize steering logic 1, steering logic 2-steering logic 18 in steering logic or the control thinking.
Embodiment 5:
Fig. 2 (a), Fig. 2 (b), Fig. 2 (c), Fig. 2 (d) are combined with Fig. 3, Fig. 4, Fig. 5, the working time that can realize which platform equipment is short, which platform equipment is preferential stand-by equipment just, when system needs chain promoter, will at first chain this preferential stand-by equipment, can realize steering logic 1, steering logic 2-steering logic 9, steering logic 19-steering logic 27 in steering logic or the control thinking.
Embodiment 6:
Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d are combined with Fig. 6, Fig. 7, Fig. 8, the working time that can realize which platform equipment is short, which platform equipment is preferential stand-by equipment just, when system needs chain promoter, will at first chain this preferential stand-by equipment, can realize steering logic 1, steering logic 2-steering logic 18 in steering logic or the control thinking.
Embodiment 7:
In the present invention, when the operation of two equipment, the 3rd equipment investment is for subsequent use, if wherein a unit trip, then the 3rd equipment of chain promoter; The operation of two equipment, the 3rd equipment investment is for subsequent use, if the system outlet main-piping pressure is low, the 3rd equipment of chain promoter then; The operation of two equipment, the 3rd equipment investment is for subsequent use, if the top hole pressure of any equipment in these two equipment is low, the 3rd equipment of chain promoter then.
Embodiment 8:
In the present invention, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if second equipment drops into first for subsequent use, then second equipment is preferential stand-by equipment, if operational outfit tripping operation, then second equipment of chain promoter, if second appliance boot failure, then the 3rd equipment of interlocked startup; If it is for subsequent use that the 3rd equipment drops into first, then the 3rd equipment is preferential stand-by equipment, if the operational outfit tripping operation, the 3rd equipment of chain promoter then is if the 3rd appliance boot failure, then second equipment of interlocked startup.
Embodiment 9:
In the present invention, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if it is for subsequent use that second equipment drops into first, then second equipment is preferential stand-by equipment, if the outlet main-piping pressure of system is low, second equipment of chain promoter then, if second appliance boot failure or after second equipment operation the outlet main-piping pressure of system still low, then through one section time-delay, the 3rd equipment of chain promoter; If the 3rd equipment drops into first for subsequent use, then the 3rd equipment is preferential stand-by equipment, if the outlet main-piping pressure of system is low, the 3rd equipment of chain promoter then, if the 3rd appliance boot failure or after the 3rd equipment operation the outlet main-piping pressure of system still low, then through one section time-delay, second equipment of chain promoter.
Embodiment 10:
In the present invention, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if second equipment drops into first for subsequent use, then second equipment is preferential stand-by equipment, if the top hole pressure of operational outfit is low, second equipment of chain promoter then, if second appliance boot failure or at the top hole pressure of operational outfit after second equipment operation still top hole pressure low or second equipment after second equipment operation is still low, then through one section time-delay, the 3rd equipment of chain promoter; If the 3rd equipment drops into first for subsequent use, then the 3rd equipment is preferential stand-by equipment, if the top hole pressure of operational outfit is low, the 3rd equipment of chain promoter then, if the 3rd appliance boot failure or at the top hole pressure of operational outfit after the 3rd the equipment operation still top hole pressure low or the 3rd equipment after the 3rd equipment operation is still low, then through one section time-delay, second equipment of chain promoter.
According to real system and concrete equipment, comprise the various parameters that designed, be input signal with the signal definition that represents equipment state, according to the existing parameter in the system, carry out various collocation by steering logic or control thinking that this method provides, concurrent output signal of selling device action, the final action relationships that realizes according to the equipment of actual motion needs.
Concrete steering logic or control thinking are:
(1) device A operation, equipment B preferentially drops into for subsequent use, and the equipment C input of interlock is if device A trips the interlocked startup equipment B; If the failure of equipment B interlocked startup, then interlocked startup equipment C;
(2) device A operation, the preferential input of equipment C is for subsequent use, and the equipment B interlocking drops into, if the device A tripping operation, interlocked startup equipment C; If the failure of equipment C interlocked startup, then interlocked startup equipment B;
(3) equipment B operation, device A preferentially drops into for subsequent use, and the equipment C input of interlock is if equipment B trips the interlocked startup device A; If the failure of device A interlocked startup, then interlocked startup equipment C;
(4) equipment B operation, the preferential input of equipment C is for subsequent use, and the device A interlocking drops into, if the equipment B tripping operation, interlocked startup equipment C; If the failure of equipment C interlocked startup, then interlocked startup device A;
(5) equipment C operation, device A preferentially drops into for subsequent use, and the equipment B interlocking drops into, if equipment C tripping operation, the interlocked startup device A; If the failure of device A interlocked startup, then interlocked startup equipment B;
(6) equipment C operation, equipment B preferentially drops into for subsequent use, and the device A interlocking drops into, if equipment C tripping operation, the interlocked startup equipment B; If the failure of equipment B interlocked startup, then interlocked startup device A;
(7) device A and equipment B operation, equipment C drops into interlocking, if device A tripping operation or equipment B tripping operation, then interlocked startup equipment C;
(8) device A and equipment C operation, equipment B drops into interlocking, if device A tripping operation or equipment C tripping operation, then interlocked startup equipment B;
(9) equipment B and equipment C operation, device A drops into interlocking, if equipment B tripping operation or equipment C tripping operation, then interlocked startup device A;
If system only designs the top hole pressure of every equipment, and do not have in the situation of design system outlet main-piping pressure:
(10) device A operation, equipment B preferentially drops into for subsequent use, the equipment C input of interlocking; If the device A top hole pressure is low, the interlocked startup equipment B; If the device A top hole pressure is low or the equipment B top hole pressure is low, interlocked startup equipment C after a period of time of then delaying time behind the failure of equipment B interlocked startup or the equipment B interlocked startup;
(11) device A operation, the preferential input of equipment C is for subsequent use, and the equipment B interlocking drops into; If the device A top hole pressure is low, interlocked startup equipment C; If the device A top hole pressure is low or equipment C top hole pressure is low, interlocked startup equipment B after a period of time of then delaying time behind equipment C interlocked startup failure or the equipment C interlocked startup;
(12) equipment B operation, device A preferentially drops into for subsequent use, the equipment C input of interlocking; If the equipment B top hole pressure is low, the interlocked startup device A; If the equipment B top hole pressure is low or the device A top hole pressure is low, interlocked startup equipment C after a period of time of then delaying time behind the failure of device A interlocked startup or the device A interlocked startup;
(13) equipment B operation, the preferential input of equipment C is for subsequent use, and the device A interlocking drops into; If the equipment B top hole pressure is low, interlocked startup equipment C; If the equipment B top hole pressure is low or equipment C top hole pressure is low, interlocked startup device A after a period of time of then delaying time behind equipment C interlocked startup failure or the equipment C interlocked startup;
(14) equipment C operation, device A preferentially drops into for subsequent use, and the equipment B interlocking drops into; If equipment C top hole pressure is low, the interlocked startup device A; If equipment C top hole pressure is low or the device A top hole pressure is low, interlocked startup equipment B after a period of time of then delaying time behind the failure of device A interlocked startup or the device A interlocked startup;
(15) equipment C operation, equipment B preferentially drops into for subsequent use, and the device A interlocking drops into; If equipment C top hole pressure is low, the interlocked startup equipment B; If equipment C top hole pressure is low or the equipment B top hole pressure is low, interlocked startup device A after a period of time of then delaying time behind the failure of equipment B interlocked startup or the equipment B interlocked startup;
(16) device A and equipment B operation, equipment C drops into interlocking, if the device A top hole pressure is low or the equipment B top hole pressure is low, interlocked startup equipment C then;
(17) device A and equipment C operation, equipment B drops into interlocking, if the device A top hole pressure is low or equipment C top hole pressure is low, interlocked startup equipment B then;
(18) equipment B and equipment C operation, device A drops into interlocking, if the equipment B top hole pressure is low or equipment C top hole pressure is low, interlocked startup device A then;
If system's design system outlet main-piping pressure, and do not design in the situation of every equipment top hole pressure:
(19) device A operation, equipment B preferentially drops into for subsequent use, the equipment C input of interlocking; If the system outlet main-piping pressure is low, the interlocked startup equipment B; If the system outlet main-piping pressure is still low behind the failure of equipment B interlocked startup or the equipment B interlocked startup, interlocked startup equipment C after a period of time of then delaying time;
(20) device A operation, the preferential input of equipment C is for subsequent use, and the equipment B interlocking drops into; If the system outlet main-piping pressure is low, interlocked startup equipment C; If the system outlet main-piping pressure is still low behind equipment C interlocked startup failure or the equipment C interlocked startup, interlocked startup equipment B after a period of time of then delaying time;
(21) equipment B operation, device A preferentially drops into for subsequent use, the equipment C input of interlocking; If the system outlet main-piping pressure is low, the interlocked startup device A; If the system outlet main-piping pressure is still low behind the failure of device A interlocked startup or the device A interlocked startup, interlocked startup equipment C after a period of time of then delaying time;
(22) equipment B operation, the preferential input of equipment C is for subsequent use, and the device A interlocking drops into; If the system outlet main-piping pressure is low, interlocked startup equipment C; If the system outlet main-piping pressure is still low behind equipment C interlocked startup failure or the equipment C interlocked startup, interlocked startup device A after a period of time of then delaying time;
(23) equipment C operation, device A preferentially drops into for subsequent use, and the equipment B interlocking drops into; If the system outlet main-piping pressure is low, the interlocked startup device A; If the system outlet main-piping pressure is still low behind the failure of device A interlocked startup or the device A interlocked startup, interlocked startup equipment B after a period of time of then delaying time;
(24) equipment C operation, equipment B preferentially drops into for subsequent use, and the device A interlocking drops into; If the system outlet main-piping pressure is low, the interlocked startup equipment B; If the system outlet main-piping pressure is still low behind the failure of equipment B interlocked startup or the equipment B interlocked startup, interlocked startup device A after a period of time of then delaying time;
(25) device A and equipment B operation, equipment C drops into interlocking, if the system outlet main-piping pressure is low, interlocked startup equipment C then;
(26) device A and equipment C operation, equipment B drops into interlocking, if the system outlet main-piping pressure is low, interlocked startup equipment B then;
(27) equipment B and equipment C operation, device A drops into interlocking, if the system outlet main-piping pressure is low, interlocked startup device A then.
Claims (10)
1. the method for optimally controlling of three operational outfits comprises three operational outfits and DCS control system; It is characterized in that: comprising: represent the input signal of equipment state, realize the mutual collocation of the logical symbol of exercises relation, and the selection of various time function pieces, can send instruction and allow the output signal of device action;
Represent the input signal of equipment state, comprising: represent the switching value input signal of equipment state in any DCS control system and the PLC control system, i.e. digital quantity input signal, common form has two kinds: with 0,1 expression;
Realize the mutual collocation of the logical symbol of exercises relation, comprise: control strategy has provided the curing pattern in the accompanying drawings, and relational symbol wherein comprises with it identical logical operator of presentation logic relation in any DCS control system and the PLC control system;
The selection of various time function pieces comprises: the collocation position of various time function pieces and the selection of type comprise with it identical logical operator of function in any DCS control system and the PLC control system;
Can send instruction and allow the output signal of device action, comprising: representative can be sent the switching value output signal of device directive in any DCS control system and the PLC control system, i.e. digital output signal, and common form has two kinds: represent with 0,1.
2. the method for optimally controlling of three operational outfits according to claim 1 is characterized in that: comprising: have three operational outfits system control method and have the control method of the system of two operational outfits; Described DCS control system comprises: the dark control system of state's electricity intelligence, ABB control system, Hollysys's control system, FOXBRO control system, Siemens control system, OVATION control system and PLC control system.
3. the method for optimally controlling of three operational outfits according to claim 1, it is characterized in that: the selection of described various time function pieces, change by the subtraction block to the comparing function of operational outfit working time, both can realize that the equipment that working time is long was as preferential equipment for subsequent use, can realize that also the equipment that working time is shorter is as preferential equipment for subsequent use, also " button " can be redefined simultaneously, both can realize according to resetting working time, can realize also that according to the time people to overhaul of the equipments be hand-reset.
4. the method for optimally controlling of three operational outfits according to claim 1, it is characterized in that: the outlet main-piping pressure of described DCS control system is according to the operational factor of real system, definite value 1 is redefined, and delay time is also according to the interlock time under system's actual condition delay function piece 1 being redefined.
5. the method for optimally controlling of three operational outfits according to claim 1, it is characterized in that: the top hole pressure of each operational outfit is according to the operational factor of real system in the described DCS control system, definite value 2, definite value 3, definite value 4 are redefined, and delay time is also according to the interlock time under system's actual condition delay function piece 2 and delay function piece 3 being redefined.
6. the method for optimally controlling of described three operational outfits according to claim 1-5 is characterized in that: the running program that described user uses is: the first step, according to the type of used control system, determine the expression mode of input signal and output signal; Second step is found out those logical operator or logic function blocks identical with this method function in the control system; In the 3rd step, the control chart that provides according to this method is entered in the present control system; In the 4th step, according to the definite value that operational factor or the equipment specification manual of real system are determined some pressure and time, system just can work.
According to claim 1 with the method for optimally controlling of 2 described three operational outfits, it is characterized in that: described control method with system of three operational outfits, when two equipment operations, the 3rd equipment investment is for subsequent use, if wherein a unit trip, then the 3rd equipment of chain promoter; The operation of two equipment, the 3rd equipment investment is for subsequent use, if the system outlet main-piping pressure is low, the 3rd equipment of chain promoter then; The operation of two equipment, the 3rd equipment investment is for subsequent use, if the top hole pressure of any equipment in these two equipment is low, the 3rd equipment of chain promoter then.
According to claim 1 with the method for optimally controlling of 2 described three operational outfits, it is characterized in that: described control method with system of three operational outfits, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, and for subsequent use if second equipment drops into first, then second equipment is preferential stand-by equipment, if operational outfit tripping operation, if second equipment of chain promoter then is second appliance boot failure, then the 3rd equipment of interlocked startup; If it is for subsequent use that the 3rd equipment drops into first, then the 3rd equipment is preferential stand-by equipment, if the operational outfit tripping operation, the 3rd equipment of chain promoter then is if the 3rd appliance boot failure, then second equipment of interlocked startup.
According to claim 1 with the method for optimally controlling of 2 described three operational outfits, it is characterized in that: described control method with system of three operational outfits, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if second equipment drops into first for subsequent use, then second equipment is preferential stand-by equipment, if the outlet main-piping pressure of system is low, second equipment of chain promoter then, if second appliance boot failure or after second equipment operation the outlet main-piping pressure of system still low, then through one section time-delay, the 3rd equipment of chain promoter; If the 3rd equipment drops into first for subsequent use, then the 3rd equipment is preferential stand-by equipment, if the outlet main-piping pressure of system is low, the 3rd equipment of chain promoter then, if the 3rd appliance boot failure or after the 3rd equipment operation the outlet main-piping pressure of system still low, then through one section time-delay, second equipment of chain promoter.
According to claim 1 with the method for optimally controlling of 2 described three operational outfits, it is characterized in that: described control method with system of three operational outfits, when an equipment operation, second equipment and the 3rd equipment investment are for subsequent use, if second equipment drops into first for subsequent use, then second equipment is preferential stand-by equipment, if the top hole pressure of operational outfit is low, second equipment of chain promoter then, if second appliance boot failure or at the top hole pressure of operational outfit after second equipment operation still top hole pressure low or second equipment after second equipment operation is still low, then through one section time-delay, the 3rd equipment of chain promoter; If the 3rd equipment drops into first for subsequent use, then the 3rd equipment is preferential stand-by equipment, if the top hole pressure of operational outfit is low, the 3rd equipment of chain promoter then, if the 3rd appliance boot failure or at the top hole pressure of operational outfit after the 3rd the equipment operation still top hole pressure low or the 3rd equipment after the 3rd equipment operation is still low, then through one section time-delay, second equipment of chain promoter.
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