CN108732985A - A method of control unit first puts into first off-the-line - Google Patents
A method of control unit first puts into first off-the-line Download PDFInfo
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- CN108732985A CN108732985A CN201810486013.2A CN201810486013A CN108732985A CN 108732985 A CN108732985 A CN 108732985A CN 201810486013 A CN201810486013 A CN 201810486013A CN 108732985 A CN108732985 A CN 108732985A
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- unit
- preferential
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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
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a kind of methods that control unit first puts into first off-the-line, including：(1), according to machine sequence unlatching First unit combined floodgate power supply is led, the unit that priority state is " level-one is preferential " is defined for the unit, continues to execute following step (2)；(2), different step is executed according to following two different situations；(3), different step is executed according to following two different situations；(4), load is reduced to the 5th setting value, priority state is the unit separating brake off-the-line of " level-one is preferential ", and remove the priority state of the unit, priority state is that the unit of " two level is preferential " obtains the priority state of " level-one is preferential " simultaneously, priority state is that the unit of " three-level is preferential " obtains the priority state of " two level is preferential ", and executes above-mentioned steps (3).After the single machine rated load of load that the single fighter in parallel running is born less than 20% may be implemented in the present invention, the unit elder generation separating brake first devoted oneself to work is shut down, after the unit devoted oneself to work continue power supply of closing a floodgate.
Description
Technical field
The present invention relates to a kind of methods that control unit first puts into first off-the-line.
Background technology
User needs three unit parallel operation systems at present, it is desirable that power supply system is realized：In municipal power failure three
Platform unit (can lead machine 1 according to machine sequence is led：1-2-3 unit sequences；Lead machine 2：2-3-1 unit sequences；Lead machine 3：3-1-2
Number unit sequence) unit starting, power supply of closing a floodgate；After single machine is loaded more than 80% single machine nominal load, by leading, machine sequence is corresponding
Unit starting close a floodgate (parallel connection) work；After single machine load is less than 20% single machine nominal load, by the suitable of the first off-the-line of first input
Sequence, the unit separating brake (off-the-line) first devoted oneself to work are shut down.
In order to keep the unit working time more balanced, user requires multi-unit electric power station that can realize the controlling party for first putting into first off-the-line
Formula is realized：After single machine rated load of the load that single fighter in parallel running is born less than 20%, the machine first devoted oneself to work
The first separating brake of group is shut down, after the unit devoted oneself to work continue power supply of closing a floodgate.
Invention content
It in view of the deficiencies of the prior art, can be with the present invention is intended to provide a kind of method that control unit first put into elder generation's off-the-line
After realizing single machine rated load of the load less than 20% that the single fighter in parallel running is born, the unit first devoted oneself to work first divides
Gate stop-start, after the unit devoted oneself to work continue power supply of closing a floodgate.
The present invention's is achieved through the following technical solutions.
A method of control unit first puts into first off-the-line, includes the following steps：
(1), according to machine sequence unlatching First unit combined floodgate power supply is led, it is " level-one to define priority state for the unit
Unit preferentially " continues to execute following step (2)；
(2), different step is executed according to following two different situations,
1., load increase to the first setting value, close a floodgate power supply according to leading machine sequence and opening second unit, it is fixed for the unit
Adopted priority state is the unit of " two level is preferential ", and continues to execute following step (3)；
2., load be reduced to the second setting value, priority state is the unit separating brake off-the-line of " level-one is preferential ", and removing should
The priority state of unit executes above-mentioned steps (1) when waiting for booting next time；
(3), different step is executed according to following two different situations,
1., load continue to increase to third setting value, according to lead machine sequence open third platform unit close a floodgate power supply, for the machine
Group defines priority state and is the unit of " three-level is preferential ", and continues to execute following step (4)；
2., load be reduced to the 4th setting value, priority state is the unit separating brake off-the-line of " level-one is preferential ", and removing should
The priority state of unit, while the unit that priority state is " two level is preferential " obtains the priority state of " level-one is preferential ",
And repeat above-mentioned steps (2)；
(4), load is reduced to the 5th setting value, and priority state is the unit separating brake off-the-line of " level-one is preferential ", and removes
The priority state of the unit, while the unit that priority state is " two level is preferential " obtains the priority shape of " level-one is preferential "
State, priority state are that the unit of " three-level is preferential " obtains the priority state of " two level is preferential ", and executes above-mentioned steps (3).
Compared with prior art, it is an advantage of the invention that：The present invention may be implemented what the single fighter in parallel running was born
After single machine rated load of the load less than 20%, the unit elder generation separating brake first devoted oneself to work is shut down, after the unit devoted oneself to work continue
It closes a floodgate and powers.
Description of the drawings
Fig. 1 is the logical schematic that the priority state of No. 1 unit of the present invention judges
Specific implementation mode
The present invention is further explained in the light of specific embodiments, but not as limiting to the invention.
A method of control unit first puts into first off-the-line, includes the following steps：
(1), according to machine sequence unlatching First unit combined floodgate power supply is led, it is " level-one to define priority state for the unit
Unit preferentially " continues to execute following step (2)；
(2), different step is executed according to following two different situations,
1., load increase to the first setting value, the first setting value is set as increasing to the unit of " level-one is preferential " when load
Power is more than 80% single machine rated power, and second unit combined floodgate power supply is opened according to machine sequence is led, preferential for unit definition
Grade state is the unit of " two level is preferential ", and continues to execute following step (3)；
2., load be reduced to the second setting value, the second setting value is set as load value and is less than 20% single machine nominal load, excellent
First grade state is the unit separating brake off-the-line of " level-one is preferential ", and removes the priority state of the unit, is such as supplied without continuing to close a floodgate
Electric then shut down, whole units are in shutdown status, and above-mentioned steps (1) are executed when waiting for booting next time；
(3), different step is executed according to following two different situations,
1., load continue to increase to third setting value, third setting value be when loading the unit for increasing to " level-one is preferential "
The power of the assembling unit of power and " two level is preferential " is above 80% single machine rated power, and the combination of third platform machine is opened according to machine sequence is led
Lock is powered, and is defined priority state for the unit and is the unit of " three-level is preferential ", and continues to execute following step (4)；
2., load be reduced to the 4th setting value, the 4th is set as being less than 40% single machine nominal load when total load value, preferentially
Grade state is the unit separating brake off-the-line of " level-one is preferential ", and removes the priority state of the unit, while priority state is " two
Grade is preferential " unit obtain the priority state of " level-one is preferential ", and repeat above-mentioned steps (2)；
(4), load is reduced to the 5th setting value, and the 5th is set as being higher than less than 60% single machine nominal load when total load value
40% single machine nominal load, priority state are the unit separating brake off-the-line of " level-one is preferential ", and remove the priority shape of the unit
State, while the unit that priority state is " two level is preferential " obtains the priority state of " level-one is preferential ", priority state is " three
Grade is preferential " unit obtain the priority state of " two level is preferential ", and execute above-mentioned steps (3).
Above-mentioned steps (2) and step (3) execute different operating procedures according to different situations, i.e., in step (2) only
In the case of there was only two unit operations in one unit operation and step (3), it is possible to load may also be reduced by increasing load,
Repeatedly until the situation in step (2) 2. terminates.
Above-mentioned steps (1), step (2), step (3), step (4) are controlled by PLC program, what the PLC program used
PLC is 1200 programmable controllers of S7, as shown in Figure 1, by taking the priority state of No. 1 unit judges as an example, other two units
Respectively No. 2 units and No. 3 units, PLC program judge that the logical relation of the priority state of unit is：
One, judge whether No. 1 unit has closed a floodgate power supply：
It is no, then remove the priority state of No. 1 unit；
It is then to enter and judge in next step；
Two, judge the state of No. 2 units and No. 3 units：
No. 2 units and No. 3 units do not close a floodgate power supply, then No. 1 unit obtains the priority state of " level-one is preferential "；
In No. 2 units and No. 3 units, wherein a unit combined floodgate is powered and the unit has obtained the excellent of " level-one is preferential "
First grade state, the power supply wherein another unit does not close a floodgate, then No. 1 unit obtains the priority state of " two level is preferential ", and enters
Judge in next step；
Three, judge the state of No. 2 units or No. 3 units：
In No. 2 units and No. 3 units, the unit separating brake off-the-line of the priority state of " level-one is preferential " is obtained, and removing should
The priority state of unit, while No. 1 unit obtains the priority state of " level-one is preferential ".
The priority state of No. 2 units judges and the priority state of No. 3 units judges the priority state with No. 1 unit
Judge identical.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (1)
1. a kind of method that control unit first puts into first off-the-line, which is characterized in that include the following steps：
(1), according to machine sequence unlatching First unit combined floodgate power supply is led, it is " level-one is preferential " to define priority state for the unit
Unit, continue to execute following step (2)；
(2), different step is executed according to following two different situations,
1., load increase to the first setting value, close a floodgate power supply, defined for the unit excellent according to leading machine sequence and opening second unit
First grade state is the unit of " two level is preferential ", and continues to execute following step (3)；
2., load be reduced to the second setting value, priority state is the unit separating brake off-the-line of " level-one is preferential ", and removes the unit
Priority state, wait for next time booting when execute above-mentioned steps (1)；
(3), different step is executed according to following two different situations,
1., load continue to increase to third setting value, close a floodgate power supply according to leading machine sequence and opening third platform unit, it is fixed for the unit
Adopted priority state is the unit of " three-level is preferential ", and continues to execute following step (4)；
2., load be reduced to the 4th setting value, priority state is the unit separating brake off-the-line of " level-one is preferential ", and removes the unit
Priority state, while priority state be " two level is preferential " unit obtain the priority state of " level-one is preferential ", lay equal stress on
Above-mentioned steps (2) are executed again；
(4), load is reduced to the 5th setting value, and priority state is the unit separating brake off-the-line of " level-one is preferential ", and removes the machine
The priority state of group, while the unit that priority state is " two level is preferential " obtains the priority state of " level-one is preferential ", it is excellent
First grade state is that the unit of " three-level is preferential " obtains the priority state of " two level is preferential ", and executes above-mentioned steps (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486013.2A CN108732985A (en) | 2018-05-21 | 2018-05-21 | A method of control unit first puts into first off-the-line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486013.2A CN108732985A (en) | 2018-05-21 | 2018-05-21 | A method of control unit first puts into first off-the-line |
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| CN108732985A true CN108732985A (en) | 2018-11-02 |
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| CN201810486013.2A Pending CN108732985A (en) | 2018-05-21 | 2018-05-21 | A method of control unit first puts into first off-the-line |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664430A (en) * | 2012-05-15 | 2012-09-12 | 国网电力科学研究院 | Automatic generation control (AGC) method for generating sets of hydropower station |
| CN103501006A (en) * | 2013-09-26 | 2014-01-08 | 北京北变微电网技术有限公司 | Centralized control method for microgrid |
| CN103762715A (en) * | 2013-12-23 | 2014-04-30 | 华信邮电咨询设计研究院有限公司 | Parallel operation and load switching control method of 10kV generator set |
| CN104505833A (en) * | 2015-01-26 | 2015-04-08 | 国网福建省电力有限公司泉州供电公司 | Method for automatically controlling load capacity of transformer |
-
2018
- 2018-05-21 CN CN201810486013.2A patent/CN108732985A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664430A (en) * | 2012-05-15 | 2012-09-12 | 国网电力科学研究院 | Automatic generation control (AGC) method for generating sets of hydropower station |
| CN103501006A (en) * | 2013-09-26 | 2014-01-08 | 北京北变微电网技术有限公司 | Centralized control method for microgrid |
| CN103762715A (en) * | 2013-12-23 | 2014-04-30 | 华信邮电咨询设计研究院有限公司 | Parallel operation and load switching control method of 10kV generator set |
| CN104505833A (en) * | 2015-01-26 | 2015-04-08 | 国网福建省电力有限公司泉州供电公司 | Method for automatically controlling load capacity of transformer |
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