CN109213258B - Control method for reducing total power of multiple ovens - Google Patents
Control method for reducing total power of multiple ovens Download PDFInfo
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- CN109213258B CN109213258B CN201811017449.3A CN201811017449A CN109213258B CN 109213258 B CN109213258 B CN 109213258B CN 201811017449 A CN201811017449 A CN 201811017449A CN 109213258 B CN109213258 B CN 109213258B
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- oven
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a total power reduction control method for a plurality of ovens, which comprises a host, a first oven, a second oven and a third oven, wherein an online flow reduction control program is arranged in the host, the total powers of the first oven, the second oven and the third oven are different, and the online flow reduction control program is arranged in the host to control the first oven, the second oven and the third oven; the online flow reducing control program of the host is set as a (KW) with an artificially adjustable upper limit; the total power of the second oven and the third oven is higher than a (KW); the second oven has smaller total required power, and the third oven has larger total required power. When the actual consumed power of the system is close to the distribution power, the automatic control program can be started immediately, and the power peak periods of any two ovens are staggered, so that the total power of the system is effectively reduced, and each oven can still work normally while the total power of the system does not exceed the distribution power.
Description
Technical Field
The invention relates to the technical field of vacuum drying, in particular to a total power reduction control method for a plurality of ovens.
Background
Oven power is typically very high. When the number of ovens is large, the total power of the system is large, a certain pressure is caused on power distribution, and the power range provided by customers is often exceeded. And the thicker the transmission line the higher the cost and the more difficult it is to install. In practical use, the oven has the working characteristics that the heating power of 10 minutes to 30 minutes of initial rapid temperature rise is close to full load, but the heating power of the latter heat preservation stage is greatly reduced, and is generally maintained in the range of 0 to 20 percent.
In the prior art, when the actual power consumption of the system is close to the distribution power, the power peak time of any two ovens cannot be staggered in time, so that the total power of the system cannot be effectively reduced, the total power of the system cannot exceed the distribution power, each oven cannot be ensured to still work normally, and a certain influence is brought to the work.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a total power reduction control method for a plurality of ovens.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The total power reduction control method for the multiple ovens comprises a host, a first oven, a second oven and a third oven, wherein an online flow reduction control program is arranged in the host, the total powers of the first oven, the second oven and the third oven are different, and the online flow reduction control program is arranged in the host to control the first oven, the second oven and the third oven.
Preferably, the on-line flow reducing control program of the host is set to be a (KW) as an upper limit which is adjustable.
Preferably, the total power of the second and third ovens is higher than a (KW).
Preferably, the second oven has smaller total required power, and the third oven has larger total required power.
Preferably, the host machine, the first oven, the second oven and the third oven are all controlled to be switched on and off by the suction of the heating source contactor, and the suction of the heating source contactor is controlled by an on-line flow reducing control program of the host machine.
Preferably, the specific steps are as follows:
A. for a plurality of ovens, selecting one of the ovens as a host, and transmitting the total power of all ovens to the host in real time;
B. an online flow reducing control program is arranged in the host, and the host is set with an artificially adjustable upper limit a (KW);
C. The host directly allows the oven with the total power lower than a to heat; queuing ovens with total power higher than a to allow heating in turn;
D. the duration of the rotation for the greater total power demand is slightly longer and the duration of the rotation for the lesser total power demand is slightly shorter.
Preferably, in the step D, the allowable rotation duration of heating the second oven with smaller total required power is less than n seconds (the current number of high-power ovens is n), and the allowable rotation duration of heating the third oven with larger total required power is greater than n×t and less than n×t seconds (the current number of high-power ovens is n, each rotation time: t (s)).
Preferably, all ovens in step a transmit the total power to the host in real time, including the host itself.
Preferably, in the step C, when the host queues the oven with high real-time power requirement, the oven which does not allow the contactor to be attracted or the oven with communication failure will not allow the contactor to be attracted.
Compared with the prior art, the invention provides a total power reduction control method for a plurality of ovens, which has the following beneficial effects:
The automatic control method is specially designed, when the actual consumed power of the system is close to the distribution power, an automatic control program can be started immediately, and the power peak periods of any two ovens are staggered, so that the total power of the system is effectively reduced, and each oven can still work normally while the total power of the system is ensured not to exceed the distribution power;
The ovens are operated simultaneously, high power is completely staggered, and two ovens simultaneously operate at high power. If for a large-scale oven with 50KW rated power, the rated power of the breaker is the rated power sum of 3 machines, but the circuit only runs by using a 70KW distribution circuit, in actual production, an automatic control program only allows the oven contactor with the real-time total power lower than 15% to be attracted to other ovens except one oven which can work at full power.
The device has the advantages that the parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device has a simple structure and is convenient to operate.
Drawings
FIG. 1 is a schematic diagram of a method for controlling total power reduction of a plurality of ovens according to the present invention;
Fig. 2 is a flow chart of a method for controlling total power reduction of a plurality of ovens according to the present invention.
In the figure: 1. a host; 2. a first baking oven; 3. a second oven; 4. and a third oven.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
As shown in fig. 1-2, a method for controlling total power reduction of multiple ovens includes a host 1, a first oven 2, a second oven 3 and a third oven 4, wherein an online flow reduction control program is arranged in the host 1, the total powers of the first oven 2, the second oven 3 and the third oven 4 are different, and an online flow reduction control program is arranged in the host 1 to control the first oven 2, the second oven 3 and the third oven 4.
The online flow reducing control program of the host 1 is set to be a (KW) as an upper limit which is adjustable.
The total power of the second oven 3 and the third oven 4 is higher than a (KW).
The total required power of the second oven 3 is smaller, and the total required power of the third oven 4 is larger.
The host machine 1, the first oven 2, the second oven 3 and the third oven 4 are all controlled to be switched on and off through the suction of the heating source contactor, and the suction of the heating source contactor is controlled through an on-line flow reducing control program of the host machine 1.
The principle of the invention is as follows: in general, a heating source controlled by PID is adopted, when the temperature is close to the set temperature, the total power of the heating source is greatly reduced, meanwhile, in actual production, two or more ovens are started in a staggered way for a certain time,
When the actual power consumption of the system is close to the distribution power, the online current-reducing control program of the host 1 can be started immediately, and the power peak periods of any two ovens are staggered, so that the total power of the system is effectively reduced, and each oven can still work normally while the total power of the system does not exceed the distribution power.
Example 2
As shown in fig. 1-2, a method for controlling total power reduction of a plurality of ovens comprises the following specific steps:
A. for a plurality of ovens, selecting one of the ovens as a host 1, and transmitting the total power of all ovens to the host 1 in real time;
B. an online flow reducing control program is arranged in the host 1, and the host sets an artificially adjustable upper limit a (KW);
C. The host 1 directly allows the oven with the total power lower than a to heat; queuing ovens with total power higher than a to allow heating in turn;
D. the duration of the rotation for the greater total power demand is slightly longer and the duration of the rotation for the lesser total power demand is slightly shorter.
In the step D, the allowable rotation duration of heating the No. two ovens 3 with smaller total required power is less than n seconds, (the current high-power oven number is n), and the allowable rotation duration of heating the No. three ovens 4 with larger total required power is greater than n×t and less than 2×n×t seconds (the current high-power oven number is n, each rotation time is t (s)).
All ovens in step a transfer the total power in real time to the host 1, including the host 1 itself.
In the step C, when the host 1 queues the oven with larger real-time required power, the oven or the oven with communication failure is not allowed to be sucked by the contactor, and the oven is not allowed to be sucked by the contactor, so that the safety of electricity consumption is ensured, and meanwhile, under the condition that the total period time of rotation is not long, although the time of sucking the contactor is reduced, the battery is not cooled, so that the influence on drying is almost negligible, and if the time of not sucking the contactor is long, the dried time can be corrected according to the time of sucking the contactor.
The ovens are operated simultaneously, high power is completely staggered, and two ovens simultaneously operate at high power. For a large-sized oven with 50KW rated power, the rated power of the breaker is the sum of the rated powers of 3 machines, but the line only runs by using a 70KW distribution line, in actual production, the online flow reducing control program only allows the oven contactor with the real-time total power lower than 15% to be attracted to other ovens except one oven which can work at full power.
It should be noted that: a total power reduction control method for a plurality of ovens generally adopts high-speed pulse electricity for controlling a resistance wire type heating source; the control unit needs to summarize the working ratio of each heating source in real time, and because the power of each heating source can be estimated in advance, the real-time total power can be roughly estimated through a program; the change of the working ratio is controlled by PID technology only
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The control method of the total power reduction control system of the plurality of ovens is characterized in that the control system comprises a host machine (1), a first oven (2), a second oven (3) and a third oven (4), and is characterized in that an online current reduction control program is arranged in the host machine (1), the total powers of the first oven (2), the second oven (3) and the third oven (4) are different, and the online current reduction control program arranged in the host machine (1) controls the first oven (2), the second oven (3) and the third oven (4), and the control method comprises the following specific steps:
(A) For a plurality of ovens, selecting one of the ovens as a host (1), and transmitting the total power of all ovens to the host (1) in real time;
(B) An online current reducing control program is arranged in the host (1), and the host is set with an artificially adjustable upper limit of a kilowatts;
(C) The main machine (1) directly allows the oven with the total power lower than a to heat; queuing ovens with total power higher than a to allow heating in turn;
(D) The duration of the rotation with larger total required power is slightly prolonged, and the duration of the rotation with smaller total required power is slightly reduced;
in the step (C), when the host (1) queues the oven with larger real-time required power, the oven which does not allow the contactor to be sucked or the oven with communication fault is not allowed to suck;
In the step (D), the allowable rotation duration of heating the second oven (3) with smaller total required power is less than n seconds, the number of current high-power ovens is n, the allowable rotation duration of heating the third oven (4) with larger total required power is greater than n×t and less than 2×n×t seconds, the number of current high-power ovens is n, and each rotation time: the time of t seconds is set,
The on-line flow reduction control program is set to only allow full power operation of one oven, and other ovens only allow oven contactor actuation with a total real-time power of less than 15%.
2. Control method according to claim 1, characterized in that the total power of the oven number one (2) is lower than a kw.
3. Control method according to claim 1, characterized in that the total power of the oven No. (3) and oven No. (4) is higher than a kw.
4. A control method according to claim 3, characterized in that the total required power of the oven No. two (3) is smaller and the total required power of the oven No. three (4) is larger.
5. The control method according to claim 1, wherein the host (1), the first oven (2), the second oven (3) and the third oven (4) are controlled to be turned on and off by suction of the heating source contactor, and suction of the heating source contactor is controlled by an on-line flow reducing control program of the host (1).
6. Control method according to claim 1, characterized in that all ovens in step (a) deliver the total power in real time to the host (1), including the host (1) itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017449.3A CN109213258B (en) | 2018-09-01 | 2018-09-01 | Control method for reducing total power of multiple ovens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017449.3A CN109213258B (en) | 2018-09-01 | 2018-09-01 | Control method for reducing total power of multiple ovens |
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| Publication Number | Publication Date |
|---|---|
| CN109213258A CN109213258A (en) | 2019-01-15 |
| CN109213258B true CN109213258B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811017449.3A Active CN109213258B (en) | 2018-09-01 | 2018-09-01 | Control method for reducing total power of multiple ovens |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1067650A1 (en) * | 1999-07-05 | 2001-01-10 | Elro-Werke AG | Control arrangement For the distribution of electric power and method of operation |
| CN105222181A (en) * | 2015-10-30 | 2016-01-06 | 广东美的厨房电器制造有限公司 | For control method and the micro-wave oven of micro-wave oven |
| CN105652809A (en) * | 2014-11-11 | 2016-06-08 | 广东鼎燊科技有限公司 | Kitchen power real-time scheduling system and method |
| CN106663290A (en) * | 2014-06-27 | 2017-05-10 | 温思林姆公司 | Power management method in an electrical installation and an electrical installation |
| CN106667287A (en) * | 2016-12-30 | 2017-05-17 | 广东美的厨房电器制造有限公司 | Electric cooking appliance and method and device for controlling electric cooking appliance |
| CN207529245U (en) * | 2017-12-13 | 2018-06-22 | 宁德新能源科技有限公司 | The control circuit and heated oven of a kind of heating unit |
| CN208903154U (en) * | 2018-09-01 | 2019-05-24 | 深圳力士智造科技有限公司 | More baking ovens of one kind subtract general power control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110120990A1 (en) * | 2009-11-25 | 2011-05-26 | General Electric Company | Microwave oven power sharing method and apparatus |
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2018
- 2018-09-01 CN CN201811017449.3A patent/CN109213258B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1067650A1 (en) * | 1999-07-05 | 2001-01-10 | Elro-Werke AG | Control arrangement For the distribution of electric power and method of operation |
| CN106663290A (en) * | 2014-06-27 | 2017-05-10 | 温思林姆公司 | Power management method in an electrical installation and an electrical installation |
| CN105652809A (en) * | 2014-11-11 | 2016-06-08 | 广东鼎燊科技有限公司 | Kitchen power real-time scheduling system and method |
| CN105222181A (en) * | 2015-10-30 | 2016-01-06 | 广东美的厨房电器制造有限公司 | For control method and the micro-wave oven of micro-wave oven |
| CN106667287A (en) * | 2016-12-30 | 2017-05-17 | 广东美的厨房电器制造有限公司 | Electric cooking appliance and method and device for controlling electric cooking appliance |
| CN207529245U (en) * | 2017-12-13 | 2018-06-22 | 宁德新能源科技有限公司 | The control circuit and heated oven of a kind of heating unit |
| CN208903154U (en) * | 2018-09-01 | 2019-05-24 | 深圳力士智造科技有限公司 | More baking ovens of one kind subtract general power control system |
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| CN109213258A (en) | 2019-01-15 |
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