CN111324097A - Cooperative control method for multiple bus control devices of distributed energy station - Google Patents
Cooperative control method for multiple bus control devices of distributed energy station Download PDFInfo
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- CN111324097A CN111324097A CN202010151067.0A CN202010151067A CN111324097A CN 111324097 A CN111324097 A CN 111324097A CN 202010151067 A CN202010151067 A CN 202010151067A CN 111324097 A CN111324097 A CN 111324097A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 230000003247 decreasing effect Effects 0.000 claims description 12
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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] or computer integrated manufacturing [CIM]
- G05B19/41865—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] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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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
- G05B2219/32—Operator till task planning
- G05B2219/32252—Scheduling production, machining, job shop
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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]
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Abstract
The invention relates to a cooperative control method for a plurality of bus control devices of a distributed energy source station, which comprises the following steps: monitoring the running condition of the equipment in real time, automatically judging whether the current running is reasonable or not, and judging whether the equipment needs to be started or stopped; when equipment needs to be started, the number of the equipment needing to be started is automatically judged, and the main pipe equipment meeting the requirements is started according to a rule and a set sequence; and when the equipment needs to be stopped, automatically judging the number of the equipment needing to be stopped, and stopping the equipment with the corresponding number according to the rule. Compared with the prior art, the invention has the advantages of greatly reducing the volume of control logic, reducing PLC burden, reducing manual intervention, reducing labor cost and the like.
Description
Technical Field
The invention relates to a control technology of distributed energy, in particular to a cooperative control method of a plurality of bus control devices of a distributed energy station.
Background
The distributed energy station generally relates to more equipment, and includes air source heat pump, centrifugal heat pump set, centrifugal chiller, lithium bromide, cooling tower, pump etc. adopt the header pipe system design can increase the fault tolerance and the stability of system, but also increased the degree of difficulty of control simultaneously. Therefore, a method suitable for cooperative control of multiple master control devices is needed to be designed, which is more favorable for realizing automatic operation of the energy station, reduces the burden of operators, reduces labor cost, and improves the autonomy and flexibility of system operation. At present, a control platform on the market does not have a control module for a plurality of devices of a distributed energy station, cannot coordinate and control the devices well, and is not strong in applicability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a cooperative control method for a plurality of distributed energy source stations and a plurality of bus control devices.
The purpose of the invention can be realized by the following technical scheme:
a cooperative control method for a plurality of bus control devices of a distributed energy station comprises the following steps:
monitoring the running condition of the equipment in real time, automatically judging whether the current running is reasonable or not, and judging whether the equipment needs to be started or stopped;
when equipment needs to be started, the number of the equipment needing to be started is automatically judged, and the main pipe equipment meeting the requirements is started according to a rule and a set sequence;
and when the equipment needs to be stopped, automatically judging the number of the equipment needing to be stopped, and stopping the equipment with the corresponding number according to the rule.
Preferably, when the number of the operating devices is greater than the required number, the control method comprehensively evaluates the priority, the device operating state and the stop permission condition of each device, and sends a stop instruction signal to the device which has the stop permission condition and has the highest priority when the device is operating until the number of the operating devices is equal to the required number of the operating devices.
Preferably, the priority includes a manual priority and an automatic priority, and the manual priority and the automatic priority are switched through the control screen.
Preferably, the manual priority is set through an operation screen, the manual priority is defined according to the total number of the equipment, and a priority locking logic is designed in the manual priority, so that the equipment priority is not repeated.
Preferably, the automatic priority is automatically judged and defined by the control system, and the sorting is performed according to the running time of the equipment.
Preferably, when the number of the devices operating is equal to the required number, the device does not send out the starting or stopping instruction and maintains the current operation.
Preferably, when it is monitored that the number of devices operating is less than the required number of devices, the control method comprehensively judges the priority, the operating state and the start permission conditions of each device, and sends a start instruction signal to the device with the minimum priority, which has the start permission conditions and stops the device, until the number of devices operating is equal to the required number of devices operating.
Preferably, every two adjacent starting instructions are sent out in 3s interval.
Preferably, the "number of required operating devices" pin is calculated by the control system in real time, and is calculated by adding the following three part number requirements:
1) the number of the existing running devices;
2) calculating the number of the required increased and decreased equipment in real time according to system parameters;
3) the program controls the number of instructions given.
Preferably, the number of the devices required to be increased or decreased obtained by calculation is realized by writing logic codes, wherein the input parameters include monitoring parameters, the number of the devices, a high parameter fixed value, a low parameter fixed value, a high fixed value monitoring period, a low fixed value monitoring period, an increase or decrease mode selection and a reset, and the output parameters are the number of the devices required to be operated and changed.
The number of the running devices which need to be increased or decreased can be calculated in real time according to the running parameters (such as flow, pressure, temperature, the matching difference of the number of the running devices of the main machine and the auxiliary machine, and the like) of the system, so that the stability of the running parameters is ensured.
The matching difference of the running numbers of the main and auxiliary machines can be monitored in real time, and the standby auxiliary machine can be started in time after the auxiliary machine is tripped due to faults.
Compared with the prior art, the invention has the following advantages:
1) can realize the cooperative control of many master control equipment, solve following current problem: at present, a control platform on the market does not have a control module for a plurality of devices of a distributed energy station, cannot coordinate and control the devices well, is not strong in applicability, and increases difficulty for controlling a plurality of main control systems.
2) The volume of the control logic is greatly reduced, the PLC burden is reduced, the distributed energy station with more equipment can be widely applied, the logic is clear, the manual intervention is reduced, and the labor cost is reduced.
Drawings
FIG. 1 is a flow chart of the operation of an embodiment of the present invention;
FIG. 2 is a flow chart of real-time parameter monitoring according to an embodiment of the present invention;
FIG. 3 is a schematic view of a control interface according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
The invention compiles the required control function through the logic code, compiles and generates the function block of 'master control equipment control', thereby realizing the cooperative control of a plurality of master control equipment. The module design can realize the following functions:
and monitoring the running condition of the equipment in real time, automatically judging whether the current running is reasonable or not, and judging whether the equipment needs to be started or stopped.
When the equipment needs to be started, the number of the equipment needing to be started is automatically judged, and the main pipe equipment meeting the requirements is started according to a rule in a certain sequence.
And when the equipment needs to be stopped, automatically judging the number of the equipment needing to be stopped, and stopping the equipment with the corresponding number according to the rule.
The invention provides a control module of multiple devices, which is compiled based on logic codes to realize the function of coordinated control of the multiple devices.
The energy station has more equipment, and in order to accurately position the equipment, a priority system is designed and is divided into two sets of systems of manual priority and automatic priority, and operating personnel can switch the manual priority and the automatic priority through a control picture.
The manual priority is set by an operator through an operation picture and is defined according to the total number of the equipment, if 21 air-cooled heat pumps exist, the priority of each air-cooled heat pump can be set to be any non-repeated integer between 1 and 21, and priority locking logic is designed inside the air-cooled heat pumps to ensure that the equipment priority cannot be repeated.
The automatic priority is automatically judged and defined by the control system and is sorted according to the running time of the equipment. If the total number of the equipment is N, the equipment with the shortest operation time length is the priority 1, and so on, the equipment with the longest operation time length is the priority N, and the priority of each equipment is an unequal integer between 1 and N.
The I/O parameters of the "master control device control" function block are shown in table 1, the input parameters include the total number of devices, the number of devices to be operated, the priority of the devices, the operating state of the devices, the start permission state of the devices, and the stop permission state of the devices, and the output parameters include the start command of the devices, the stop command of the devices, and the number of devices to be operated.
TABLE 1
| IN | OUT |
| Total number of equipment | Device start-up instructions |
| Number of operating devices required | Device stop instruction |
| Device priority | Number of running devices |
| Operating state of the apparatus | |
| Device boot enabled state | |
| Device stop enabled state |
As shown in fig. 1, when the number of operating devices is greater than the required number, the master control function block may comprehensively evaluate the priority, the device operating state, and the stop permission conditions of each device, and send a stop instruction signal to the device having the stop permission conditions and the highest priority of the devices in operation (the number of operating devices — the number of required operating devices) until the number of devices in operation is equal to the required number of devices.
When the number of the equipment running is equal to the required number, no starting or stopping instruction is sent, and the equipment keeps running at the present state.
When the system monitors that the number of equipment running is smaller than the required number, the master control equipment control function block comprehensively judges the priority, running state and starting permission conditions of each equipment, sends starting instruction signals to the equipment with the starting permission conditions and the lowest priority (the required number of running equipment-the number of running equipment) when the equipment stops, and sends out the starting instruction signals at an interval of 3s until the number of running equipment is equal to the required number of equipment so as to prevent instantaneous current overload caused by the simultaneous starting of the equipment connected to the same electrical bus and line faults.
The number of pins of the required running equipment in the function block of the 'mother pipe equipment control' is calculated by the control system in real time, and the number of pins is calculated by adding the following three part of requirements:
1) the number of the existing running devices;
2) calculating the number of the required increased and decreased equipment in real time according to system parameters;
3) and programming the given number of orders.
The function of obtaining the number of the equipment needing to be increased and decreased by real-time calculation according to system parameters is realized by compiling logic codes, the generated I/O parameters of the function block of calculating the number of the linked and locked parameter monitoring are shown in Table 2, the input parameters comprise monitoring parameters, the number of the equipment, a fixed value of a high parameter, a fixed value of a low parameter, a monitoring period of a high fixed value, a monitoring period of a low fixed value, a mode of increasing and decreasing and resetting, and the output parameters are the number of the equipment needing to be operated and changed.
TABLE 2
| IN | OUT |
| Monitoring parameters | Number of required operating equipment |
| Number of devices | |
| High constant value | |
| Low constant value | |
| High fixed value monitoring period | |
| Low constant monitoring period | |
| Incremental mode selection | |
| Reduction of position |
As shown in FIG. 2, the function block of "number of parameter monitoring and association lock" has two modes of increasing and decreasing. In the case of mode 1, the number of operating stations needs to be reduced when the monitoring parameter is higher than a high fixed value, and the number of operating stations needs to be increased when the monitoring parameter is lower than a low fixed value; in the case of mode 2, the number of operating stations needs to be increased when the monitored parameter is higher than the high fixed value, and the number needs to be decreased when the monitored parameter is lower than the low fixed value.
The following describes the operation process of the function block of "number of parameter monitoring and interlocking blocks calculation" by taking a mode 1 as an example, and the original value of the number of changed devices to be operated is 0, that is, the number of devices to be operated does not need to be increased or decreased. When the monitored parameter is less than the low fixed value, counting the number of the equipment needing to be operated, adding 1 to the number of the equipment needing to be operated if the monitored parameter is still less than the low fixed value after a period of the low fixed value, and repeating the steps, wherein if the monitored parameter is still less than the low fixed value after the next period of the low fixed value, adding 1 to the number of the equipment needing to be operated. The upper limit of the number of the added devices is the total number of the devices to be operated minus the number of the devices to be operated.
And similarly, when the monitoring parameter is greater than the high fixed value, after a period with the high fixed value, if the monitoring parameter is still greater than the low fixed value, subtracting 1 from the number of the equipment to be operated, and so on, and if the monitoring parameter is still greater than the low fixed value after the next period with the high fixed value, subtracting 1 from the number of the equipment to be operated. The upper limit of the number of the devices to be operated is reduced to the number of the devices already operated.
When the monitoring parameter is that the matching of the running numbers of the main and auxiliary machines is poor, the low fixed value is set as 0, after the auxiliary machine is tripped due to fault, the running numbers of the main and auxiliary machines are not matched, the number of the changed devices to be operated is increased, so that the standby auxiliary machine is started in time, the damage to the system is avoided,
the reset pin of the function block of 'parameter monitoring interlocking number calculation' is used for resetting the output, and after the reset pin is set with 1, the output 'number of equipment change required to operate' is assigned with 0.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A cooperative control method for a plurality of bus control devices in a distributed energy station is characterized by comprising the following steps:
monitoring the running condition of the equipment in real time, automatically judging whether the current running is reasonable or not, and judging whether the equipment needs to be started or stopped;
when equipment needs to be started, the number of the equipment needing to be started is automatically judged, and the main pipe equipment meeting the requirements is started according to a rule and a set sequence;
and when the equipment needs to be stopped, automatically judging the number of the equipment needing to be stopped, and stopping the equipment with the corresponding number according to the rule.
2. The cooperative control method of multiple bus controllers in a distributed energy source station as claimed in claim 1, wherein when the number of operating devices is greater than the required number, the control method comprehensively evaluates the priority, the operating state and the stop permission condition of each device, and sends a stop instruction signal to the device having the stop permission condition and the highest priority of the devices in operation until the number of devices in operation is equal to the required number of operating devices.
3. The cooperative control method of multiple bus controllers in a distributed energy source station as claimed in claim 2, wherein the priority comprises a manual priority and an automatic priority, and the manual priority and the automatic priority are switched through a control screen.
4. The cooperative control method of multiple bus control devices of a distributed energy source station as claimed in claim 3, wherein the manual priority is set by an operation screen and defined according to the total number of devices, and a priority locking logic is designed in the manual priority to ensure that the device priorities are not repeated.
5. The cooperative control method of the distributed energy source station multi-bus control equipment as claimed in claim 3, wherein the automatic priority is automatically determined and defined by the control system and is sorted according to the running time of the equipment.
6. The cooperative control method of multiple bus controllers in a distributed energy source station as claimed in claim 1, wherein when the number of devices operating is equal to the required number, no start or stop command is issued, and the devices maintain their current state operation.
7. The cooperative control method of multiple bus control devices in a distributed energy source station according to claim 1, wherein when it is monitored that the number of devices operating is less than the required number, the control method comprehensively judges the priority, the operating state and the start permission condition of each device, and sends a start instruction signal to the device with the minimum priority which has the start permission condition and stops until the number of devices operating is equal to the required number of devices operating.
8. The cooperative control method for multiple bus control devices in a distributed energy source station as claimed in claim 7, wherein every two adjacent start instructions are issued at an interval of 3 s.
9. The cooperative control method for the distributed energy source station and the plurality of the bus control devices according to claim 2 or 7, wherein the number of the pins of the required operating devices is calculated by the control system in real time and is calculated by adding the following three part of the number requirements:
1) the number of the existing running devices;
2) calculating the number of the required increased and decreased equipment in real time according to system parameters;
3) the program controls the number of instructions given.
10. The cooperative control method of multiple bus controllers in a distributed energy source station as claimed in claim 8, wherein the calculated number of devices to be increased or decreased is implemented by writing logic codes, wherein the input parameters include monitoring parameters, the number of devices, a fixed value of high parameter, a fixed value of low parameter, a monitoring period of high fixed value, a monitoring period of low fixed value, a selection and a reset of increasing or decreasing mode, and the output parameters are the number of devices to be changed.
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| CN202010151067.0A CN111324097A (en) | 2020-03-06 | 2020-03-06 | Cooperative control method for multiple bus control devices of distributed energy station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883043A (en) * | 2021-09-08 | 2022-01-04 | 西安热工研究院有限公司 | Automatic starting and stopping method of air compressor unit by adopting priority control |
| CN117973084A (en) * | 2024-03-28 | 2024-05-03 | 广东电网能源发展有限公司 | Substation equipment layout optimization method based on three-dimensional digitization |
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