CN109031940B - Coordination control method and system for multiple sets of equipment or units to share one power source for driving - Google Patents
Coordination control method and system for multiple sets of equipment or units to share one power source for driving Download PDFInfo
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a coordination control method for multiple sets of equipment or units to share one power source for driving, which realizes green and efficient utilization of the equipment by controlling the coordination action of the multiple sets of equipment.
Description
Technical Field
The invention relates to the technical field of control, in particular to a coordination control method for multiple sets of equipment or units to share one power source for driving.
Background
In the production process, a plurality of sets of same equipment or units (such as walking beam type heating furnaces or heat treatment lines) are arranged in the same workshop, and the equipment or units work in parallel according to a certain working period. Two situations are common: (1) the maximum load and the minimum load of each set of equipment or unit are greatly different in different stages of a working period; (2) in each set of equipment or unit, the size of each load is unchanged in one working period, but each load appears periodically and discontinuously.
At present, a conventional control method is adopted, for the situation (1), as shown in fig. 1(a), a power source is configured for each set of equipment or unit, and the capacity of each power source is configured according to the maximum load; in the case of (2) above, the capacity of the power source is simultaneously allocated for each load as shown in fig. 1 (b). The main drawback of such an arrangement is: the number of power sources is increased, and the equipment investment is increased; the power source equipment capacity can not be effectively exerted, and the power source equipment capacity is in a light load state most of the time; the corresponding electrical equipment quantity increases, and the electrical equipment ability can not high-efficiently utilize, and reactive power is big, the energy is wasted.
Therefore, how to design a control method to make multiple sets of devices or units with the same power source type share one power source and corresponding electrical devices, so as to reduce the number of power sources and electrical devices while meeting the power requirement of device operation, is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve the problems, provides a coordination control method for multiple sets of equipment or units to share one power source for driving, realizes green and efficient utilization of the equipment by controlling the coordination action of the multiple sets of equipment, can search the optimal operation mode of the joint operation of the multiple sets of equipment, and reduces the configuration capacity of a power system and an electrical system of the equipment, thereby achieving the purposes of reducing the investment of electromechanical equipment, saving energy and reducing the operation and maintenance amount of the equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the coordination control method for driving a plurality of sets of equipment or units by sharing one power source is characterized by comprising the following steps:
step 1, determining equipment or a unit sharing one power source, wherein the types of the power sources required by the equipment or the unit are the same;
step 2, analyzing the operation load change condition of each device or unit in each operation period;
and 3, adopting a peak staggering control method, putting each device or unit into operation at different moments, and searching the optimal operation mode of the devices or units operating simultaneously.
And 4, setting the capacity of the power source as the maximum value of the superposed value of the running loads of all the equipment or the units at each moment in the optimal running mode.
Further, the method for searching the optimal operation mode of the simultaneous operation of the equipment or the unit by using the peak staggering control method in the step 3 comprises the following steps: and controlling each device or unit to be put into operation at different moments so that the maximum operation load of each device or unit is not overlapped.
Further, the method for searching the optimal operation mode of the simultaneous operation of the equipment or the unit by using the peak staggering control method in the step 3 comprises the following steps: and selecting the running time of the equipment or the unit according to the size of the running load in the running period of the equipment or the unit, and enabling the maximum value of the superposed value of the running loads of all the equipment or the unit at each time to be minimum in the running period of the equipment or the unit with the longest running period of the equipment or the unit.
Furthermore, the equipment or the units are the same equipment or the units, and the load of the equipment or the units changes in a step manner at different stages of a working cycle.
Furthermore, the equipment or the units are the same equipment or the units, and the load of the equipment or the units is not changed and appears discontinuously at different stages of a working cycle.
Furthermore, the number of the equipment or the unit is two, and after the first equipment or the unit is put into operation, the second equipment is put into operation at the lowest load point in the operation period of the first equipment or the unit.
A controller adopts the coordination control method that a plurality of sets of equipment or units share one power source for driving.
Many sets of equipment or unit share power supply driven coordinated control system, including power supply, electrical equipment controller, driver and driver controller, the electrical equipment controller is connected with electrical equipment, and driver controller are connected, electrical equipment connects gradually with power supply, driver, the power supply is used for providing power or electric energy for the operation of equipment or unit, electrical equipment is used for supplying power for the power supply, the driver controller adopts the controller of the above-mentioned many sets of equipment or unit share power supply driven coordinated control method.
Furthermore, the power source is a hydraulic station, a water pump station or power supply equipment, and the electrical equipment comprises a transformer, switch equipment and a controller. The power source provides energy for the operation of equipment, such as a hydraulic station, a water pump station, power equipment and the like. The electric device mainly refers to a control system, elements, and the like of an industrially used electric device, a power generation device, a power transmission device, and some control devices, and any electric device may be referred to as an electric device.
Compared with the prior art, the invention has the beneficial effects that:
the invention controls the coordination action of a plurality of sets of equipment by a coordination control method that a plurality of sets of equipment or units share one power source for driving, and the control method can avoid the situation that the maximum loads of the plurality of sets of equipment occur simultaneously or can seek the optimal operation mode when the plurality of sets of equipment share one power source for common operation, thereby realizing the green and efficient utilization of the equipment, reducing the configuration capacity of a power system and an electrical system of the equipment, reducing the investment of electromechanical equipment and the maintenance workload of the operation of the equipment, and achieving the purpose of saving energy.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIGS. 1(a) and 1(b) are schematic diagrams of a prior art control method of the present invention;
FIG. 2 is a flow chart of a control method of the present invention;
fig. 3(a) and 3(b) are schematic diagrams of the control method of embodiment 1 of the present invention.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The following embodiment is an exemplary implementation manner of the present application, and as shown in fig. 2, a coordinated control method for multiple sets of equipment or units to share one power source drive includes the following steps:
step 1, determining equipment or a unit sharing one power source, wherein the types of the power sources required by the equipment or the unit are the same;
step 2, analyzing the operation load change condition of each device or unit in each operation period;
and 3, adopting a peak staggering control method, putting each device or unit into operation at different moments, and searching the optimal operation mode of the devices or units operating simultaneously.
And 4, setting the capacity of the power source as the maximum value of the superposed value of the running loads of all the equipment or the units at each moment in the optimal running mode.
Further, the method for searching the optimal operation mode of the simultaneous operation of the equipment or the unit by using the peak staggering control method in the step 3 comprises the following steps: and controlling each device or unit to be put into operation at different moments so that the maximum operation load of each device or unit is not overlapped.
Further, the method for searching the optimal operation mode of the simultaneous operation of the equipment or the unit by using the peak staggering control method in the step 3 comprises the following steps: and selecting the running time of the equipment or the unit according to the size of the running load in the running period of the equipment or the unit, and enabling the maximum value of the superposed value of the running loads of all the equipment or the unit at each time to be minimum in the running period of the equipment or the unit with the longest running period of the equipment or the unit.
The power source type refers to the form of energy used by running equipment or units, and the form of energy can be direct current power supply, alternating current power supply, kinetic energy and the like.
When the number of devices or groups sharing a power source is 2, as shown in fig. 1(a) for the case (1) described in the background art, the a device and the B device supply energy to the a device and the B device, respectively, through two power sources and two sets of electrical devices. The improved method of the invention is adopted to realize the control algorithm of the invention through the controller C and the controller D, the off-peak control is carried out, when the device A is at the maximum load LA1, the device B is at the minimum load LB3, the device A and the device B are the same device, the required energy forms are the same, a power source and a set of electrical equipment are arranged between the device A and the device B, and the operation input points of the device A and the device B are controlled, as shown in figure 3(a), the transverse length represents the load size, the longitudinal direction represents the change of time, and the operation from cycle 1 to cycle n of each device is represented from top to bottom. The equipment A and the equipment B have the same operation period, namely the maximum load LA1 of the equipment A is put into operation, when the equipment B is put into operation when the equipment A is operated to the minimum load LA3, the equipment A and the equipment B are simultaneously operated at the moment, the load sum of the time point after the load change in each period is calculated, and the capacity of the power source is set to be the maximum value of the load sum, so that the situation that the highest load occurs at the same time in A, B is avoided, therefore, only one set of power source, electrical equipment and controller is needed to be equipped for two sets of equipment or units A, B, and the equipment capacity can be configured according to the maximum capacity of one set of equipment from the equipment A or the equipment from the B.
The calculation procedure of calculating the sum of the loads at the time points after the load change in each cycle is as follows:
for convenience of explanation, the numerical values of the loads are set as follows: LA 1-LB 1-L1, LA 2-LB 2-L2, LA 3-LB 3-L3, LA 4-LB 4-L4, the operating duration of the plant under each load is equal, there are four different operating loads in each cycle, and the sum of the loads in each time period after peak-shifting control according to the method of the present invention is:
LA1+LB3＝L1+L3；
LA2+LB4＝L2+L4；
LA3+LB1＝L3+L1；
LA4+LB2＝L4+L2；
the magnitudes of (L1+ L3) and (L4+ L2) are compared, and the larger value after the comparison is set as the capacity of the power source.
As shown in fig. 3(B), for the case (2) described in the background art, where the maximum and minimum operating loads of the devices alternately occur, the controller C and the controller D implement the control method of the present invention, so that the actions of the maximum loads LA of the two sets of devices do not occur simultaneously, and when the device a operates at the maximum load, the device B operates at the minimum load, i.e., t2 ≠ t1, thereby avoiding the superposition of the maximum loads of the two sets of devices, and making the power source, the electrical devices and the controller thereof smaller than the configuration capacity and capacity in fig. 1 (B). The capacity of the power source is set to the sum of the maximum operating load La and the minimum load La of the equipment.
Example 2
The present embodiment is used to explain the control method of the present invention when the number of devices or units greater than 2 shares one power source.
The specific control method comprises the following steps: controlling each device or unit to be put into operation at different moments so that the maximum operation load of each device or unit is not overlapped; or selecting the time of putting the equipment or the unit into operation according to the size of the operation load in the operation period of the equipment or the unit to which the equipment or the unit belongs, and enabling the maximum value of the superposed value of the operation loads of all the equipment or the unit at each time to be the minimum in the operation period of the equipment or the unit with the longest operation period of the equipment or the unit.
When the same equipment or units share the same power source and the operation process is the same:
as in the control method of fig. 3, the same numerical settings as those of the load of example 1 are applied, i.e., LA 1-LB 1-L1, LA 2-LB 2-L2, LA 3-LB 3-L3, LA 4-LB 4-L4, the operation time lengths of the devices under each load are equal, and four different operation loads are provided in each cycle.
When the number of the devices is less than the number of different running loads in the period, the maximum load of each device is controlled to not appear simultaneously, LA1 (LB 1) and L1 in fig. 3 are the maximum load, and 4 different load values exist, that is, when the number of the devices or the units sharing one power source is less than or equal to 4, the running time of the devices is controlled, so that the maximum load values of the devices do not appear simultaneously. When the number of that device is greater than 4, the operation load correspondence table is shown in table 1
TABLE 1
As shown in table 1, when the number of devices sharing a power source is less than or equal to the number of different loads occurring in one operation cycle, the peak shifting control method is adopted to make the maximum loads not occur simultaneously, that is, the optimal operation mode is obtained in which a plurality of devices or units operate together and share one power source.
In the optimal operation mode, when the operation load of the equipment changes, the superposition value of the operation loads of all the equipment or the units which operate simultaneously is calculated, a plurality of superposition values are obtained within the time of all the equipment or the units which operate for one period, and the capacity of the power source is set as the maximum value of the superposition values.
When the same equipment or unit shares the same power source, the operation process is different:
and putting each device into operation at different moments, collecting and summing the operation loads of each device when the operation load of at least one device is changed, and searching the maximum value of the sum of the operation loads after calculation.
The time for which the respective apparatus is put into operation is again changed, for example, the maximum value of the sum of the loads calculated in Table 1 at the time of load change of the A-E apparatus obtained after the operation in Table 1 is LMAX1The time of the A-D equipment in operation is kept unchanged according to the table, and the operation time of the E equipment in operation is adjusted, t1The operation load of the E equipment at the moment can be changed into LE2, LE3 or LE4, the operation load of each equipment is collected and summed when the operation load of at least one equipment is changed under each changed operation mode, and the maximum value of the sum of the corresponding operation loads under each changed operation mode of the E equipment is searched to be LMAX2、LMAX3Or is LMAX4Comparison LMAX1、LMAX2、LMAX3And LMAX4And finding out the minimum value of the four values, wherein the common operation mode of the A-E equipment combined by the input operation modes of the E equipment corresponding to the minimum value is the optimal operation mode, and setting the maximum value of the sum of the operation loads of the equipment in the optimal operation mode as the capacity value of the power source.
According to the method for finding the optimal operation mode of the adding equipment E under the condition that the commissioning of the A-D equipment is determined, any equipment can be added under the condition that the existing equipment commissioning state is determined, and the optimal operation mode after the equipment is added can be found. And if the cycle duration of the equipment is different, calculating the time length range of the sum of the running loads of the equipment to be the longest running cycle of the equipment or the unit. For example, the length of one cycle of the device A is 5 minutes, the length of one cycle of the device B is 10 minutes, the length of one cycle of the device C is 15 minutes, and the length of one cycle of the device D is 5 minutes; the monitoring time is 15 minutes, the sum of the running loads of all the devices is calculated as long as the load of the running devices changes within the 15 minutes, and the maximum value of the sum of the running loads is found.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (7)
1. The coordination control method for driving a plurality of sets of equipment or units by sharing one power source is characterized by comprising the following steps:
step 1, determining equipment or a unit sharing one power source, wherein the types of the power sources required by the equipment or the unit are the same;
step 2, analyzing the operation load change condition of each device or unit in each operation period;
step 3, adopting a peak staggering control method, putting each device or unit into operation at different moments, and searching an optimal operation mode of the devices or units operating simultaneously, wherein the specific method comprises the following steps: selecting the time of putting the equipment or the unit into operation according to the size of the operation load in the operation period of the equipment or the unit to which the equipment or the unit belongs, and enabling the maximum value of the superposition value of the operation loads of all the equipment or the unit at each time to be minimum in the operation period of the equipment or the unit with the longest operation period;
or the maximum operation load of each device or unit is not overlapped;
and 4, setting the capacity of the power source as the maximum value of the superposed value of the running loads of all the equipment or the units at each moment in the optimal running mode.
2. The method for coordinately controlling multiple sets of equipment or units to share one power source drive according to claim 1, wherein: the equipment or the units are the same equipment or the units, and the load of the equipment or the units is changed in a step manner at different stages of a working cycle.
3. The method for coordinately controlling multiple sets of equipment or units to share one power source drive according to claim 1, wherein: the equipment or the units are the same equipment or the units, and the load of the equipment or the units is not changed and appears discontinuously at different stages of a working cycle.
4. A coordinated control method for multiple sets of equipment or units sharing one power source drive according to claim 2 or 3, characterized in that: the number of the equipment or the unit is two, and when the first equipment or the unit is put into operation, the second equipment is put into operation at the lowest load point in the operation period of the first equipment or the unit.
5. A controller, characterized by: a coordinated control method of a plurality of sets of equipment or units sharing one power source drive according to any one of claims 1-4 is adopted.
6. Many sets of equipment or unit share a power source driven coordinated control system, its characterized in that: including power supply, electrical equipment controller, driver and driver controller, the electrical equipment controller is connected with electrical equipment, and driver controller are connected, electrical equipment connects gradually with power supply, driver, the power supply is used for providing power or electric energy for the operation of equipment or unit, electrical equipment is used for supplying power for the power supply, the driver controller adopts a controller as claimed in claim 5.
7. The coordinated control system for multiple sets of equipment or units to share one power source drive according to claim 6, characterized in that: the power source comprises a hydraulic station, a water pumping station or power equipment, and the electrical equipment comprises but is not limited to a transformer, switch equipment and an electrical equipment controller.
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| CN110718922B (en) * | 2019-09-12 | 2021-06-22 | 广东电网有限责任公司广州供电局 | Equipment operation control method |
| CN110789736B (en) * | 2019-10-21 | 2021-03-26 | 北京空间机电研究所 | Peak staggering control method for satellite-borne high-power refrigerating machine |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527554A (en) * | 2009-04-30 | 2009-09-09 | 成都市华为赛门铁克科技有限公司 | Peak-avoiding regulating method and device |
| CN102478944A (en) * | 2010-11-30 | 2012-05-30 | 英业达股份有限公司 | Power supply method for providing power to multiple servers |
| CN202550690U (en) * | 2012-05-07 | 2012-11-21 | 山西省电力公司太原供电分公司 | System for weakening impact on grid |
| CN202817781U (en) * | 2012-08-31 | 2013-03-20 | 东莞市科旺网络能源有限公司 | Peak and valley power consumption balance system |
| CN202829343U (en) * | 2012-10-11 | 2013-03-27 | 上海港吉电气有限公司 | Multi-crane off-peak running control system |
| CN103295075A (en) * | 2013-04-01 | 2013-09-11 | 沈阳航空航天大学 | Ultra-short-term power load forecasting and early warning method |
| CN103745291A (en) * | 2013-11-12 | 2014-04-23 | 国家电网公司 | Multi-target orderly power utility ordering method based on power utility characteristics |
| CN104269940A (en) * | 2014-10-29 | 2015-01-07 | 四川慧盈科技有限责任公司 | Building air conditioning equipment load monitoring system |
| CN104599055A (en) * | 2015-01-04 | 2015-05-06 | 湘潭大学 | Power load demand management method for iron and steel enterprises |
| CN106022542A (en) * | 2016-06-24 | 2016-10-12 | 广州供电局有限公司电力调度控制中心 | Enterprise gateway load prediction method based on operation load characteristics |
| CN108181236A (en) * | 2017-12-22 | 2018-06-19 | 重庆光可巡科技有限公司 | Activation system with open function laser methane sensor of avoiding the peak hour |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7873441B2 (en) * | 2006-09-25 | 2011-01-18 | Andreas Joanni Synesiou | System for execution of a load operating plan for load control |
| CN101737797B (en) * | 2010-01-12 | 2013-04-17 | 中冶东方工程技术有限公司 | Pulse combustion control method |
| RU2623456C2 (en) * | 2011-12-22 | 2017-06-26 | Филипс Лайтинг Холдинг Б.В. | Overload detection device |
| JP5818865B2 (en) * | 2013-11-27 | 2015-11-18 | 三菱重工業株式会社 | Power consumption control system and method |
| CN104296448B (en) * | 2013-12-31 | 2016-08-17 | 宁波韩电电器有限公司 | A kind of intelligence avoid the peak hour regulation refrigeration plant |
| CN104466951A (en) * | 2014-11-24 | 2015-03-25 | 珠海格力电器股份有限公司 | Control method and device for automatically detecting and adjusting loads |
| CN104615104A (en) * | 2014-12-24 | 2015-05-13 | 国家电网公司 | Energy source coordination control equipment and distributed type energy source control system |
| CN105736071B (en) * | 2016-02-26 | 2019-04-02 | 哈尔滨工业大学 | 200MW thermal power plant unit management valve optimization method based on distribution way of steam switching |
| CN107577141B (en) * | 2017-09-11 | 2021-09-10 | 深圳市沃尔奔达新能源股份有限公司 | Dual-redundancy grid-connected watchdog monitoring system and power generation system |
-
2018
- 2018-08-08 CN CN201810897699.4A patent/CN109031940B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527554A (en) * | 2009-04-30 | 2009-09-09 | 成都市华为赛门铁克科技有限公司 | Peak-avoiding regulating method and device |
| CN102478944A (en) * | 2010-11-30 | 2012-05-30 | 英业达股份有限公司 | Power supply method for providing power to multiple servers |
| CN202550690U (en) * | 2012-05-07 | 2012-11-21 | 山西省电力公司太原供电分公司 | System for weakening impact on grid |
| CN202817781U (en) * | 2012-08-31 | 2013-03-20 | 东莞市科旺网络能源有限公司 | Peak and valley power consumption balance system |
| CN202829343U (en) * | 2012-10-11 | 2013-03-27 | 上海港吉电气有限公司 | Multi-crane off-peak running control system |
| CN103295075A (en) * | 2013-04-01 | 2013-09-11 | 沈阳航空航天大学 | Ultra-short-term power load forecasting and early warning method |
| CN103745291A (en) * | 2013-11-12 | 2014-04-23 | 国家电网公司 | Multi-target orderly power utility ordering method based on power utility characteristics |
| CN104269940A (en) * | 2014-10-29 | 2015-01-07 | 四川慧盈科技有限责任公司 | Building air conditioning equipment load monitoring system |
| CN104599055A (en) * | 2015-01-04 | 2015-05-06 | 湘潭大学 | Power load demand management method for iron and steel enterprises |
| CN106022542A (en) * | 2016-06-24 | 2016-10-12 | 广州供电局有限公司电力调度控制中心 | Enterprise gateway load prediction method based on operation load characteristics |
| CN108181236A (en) * | 2017-12-22 | 2018-06-19 | 重庆光可巡科技有限公司 | Activation system with open function laser methane sensor of avoiding the peak hour |
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|---|---|
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