CN103061943A - Generator set for emergency starting of high-voltage large-capacity motor and starting method - Google Patents
Generator set for emergency starting of high-voltage large-capacity motor and starting method Download PDFInfo
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- CN103061943A CN103061943A CN2013100029109A CN201310002910A CN103061943A CN 103061943 A CN103061943 A CN 103061943A CN 2013100029109 A CN2013100029109 A CN 2013100029109A CN 201310002910 A CN201310002910 A CN 201310002910A CN 103061943 A CN103061943 A CN 103061943A
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Abstract
The invention discloses a generator set for emergency starting of a high-voltage large-capacity motor. The generator set comprises a generator set body and the large-capacity motor connected with the same, a control switch is arranged between the generator set body and the large-capacity motor, an intelligent control cabinet for controlling rotating speed and voltage of the generator set body is arranged on the generator set body, an output end of the intelligent control cabinet is connected with an input end of the control switch, and the intelligent control cabinet is used for controlling switching off and switching off of the control switch. The control switch is arranged between the generator set body and the large-capacity motor, and the intelligent control cabinet is arranged to control the generator set body and the control switch, so that the large-capacity motor can be started as required, a soft starter or a frequency converter need not to be provided for the whole starting process, equipment input is reduced by 40% on the basis of starting by the soft starter or starting by the frequency converter, and capacity of a diesel engine generator set used in the generator set is only 1.2-1.5 times of that of the large-capacity motor.
Description
Technical field
The present invention relates to the emergency power generation field of power, relate in particular to a kind of high-voltage large-capacity motor emergency starting generator set, and utilize this generator set to start the method for large capacity motor.
Background technique
Along with economic development, the continuous increase of the industrial scale such as metallurgy, coal, chemical industry and single-machine capacity, (proportion of 3～10kv) large-size machines in industrial production is increasing for high pressure.For the high-voltage large-capacity motor, its Starting mode adopts following several modes mostly: directly startup of total head, auto coupling decompression start, y-δ start, soft starter starts, frequency variator starts.
Wherein, soft initiator startup and frequency variator startup then are two kinds of the most frequently used Starting mode of high-voltage large-capacity motor.
Select soft initiator that the high-voltage large-capacity motor is started; its inrush current that needs is 2～3 times of rated current; for the civil power electric power networks; inrush current during the high-voltage large-capacity motor start-up be do not have influential; but for the emergency starting diesel generating set; inrush current is excessive; can cause emergency starting to shut down with diesel generating set; so to the user of high-voltage large-capacity motor load is arranged; selected emergency starting diesel generating set is 2～3 times on high-voltage large-capacity motor; so not only increased the manufacture cost of generator set, also so that the increase of the floor space of generator set.
And select the frequency variator Starting mode that the high-voltage large-capacity motor is started, although the electric current of startup is little, the equipment cost input ratio is larger.
Summary of the invention
One object of the present invention, be to provide a kind of high-voltage large-capacity motor emergency starting generator set, it is simple in structure, easy to operate, not needing to be equipped with the equipment such as soft initiator or frequency variator can start large capacity motor, greatly save the input of equipment cost, reduced manufacture cost.
For reaching this purpose, the present invention by the following technical solutions:
A kind of high-voltage large-capacity motor emergency starting generator set, comprise generator set, the output terminal of described generator set connects large capacity motor, between described generator set and the described heavy-duty generator control switch is set, be provided for controlling the Intelligent control cabinet of its rotating speed and voltage on the described generator set, the output terminal of described Intelligent control cabinet is connected with the input end of described control switch, and is used for controlling the combined floodgate of described control switch and opening a sluice gate.
As a kind of preferred version of high-voltage large-capacity motor emergency starting with generator set, in the described Intelligent control cabinet voltage-regulating system is set, generator set control loop and switch control circuit, described voltage-regulating system, the input end of generator set control loop and switch control circuit all links to each other with the output terminal of described Intelligent control cabinet, the output terminal of described voltage-regulating system links to each other with the input end of described generator set, the output terminal in described generator set control loop links to each other with the input end of described generator set, and the output terminal of described switch control circuit links to each other with the input end of described control switch.By the generator set control loop is set, can turns from 0 and reach gradually rated speed so that Intelligent control cabinet can be controlled generator set; By voltage-regulating system is set, can the voltage after reaching rated speed reaches voltage rating from 0V gradually so that Intelligent control cabinet can be controlled generator set, and the rotating speed that makes the large capacity motor that is communicated with generator set can turn from O and reach gradually rated speed, thereby makes large capacity motor finish according to the rules startup.
Further, described intelligent control also arranges control panel cashier's office in a shop, and described control panel carries out practical operation to voltage-regulating system, generator set control loop and switch control circuit.
As a kind of preferred version of high-voltage large-capacity motor emergency starting with generator set, the first feedback module also is set in the described Intelligent control cabinet, the input end of described the first feedback module links to each other with the output terminal of described Intelligent control cabinet, and the output terminal of described the first feedback module links to each other with the input end of described generator set.By the first feedback module is set, can make generator set can be timely when reaching rated speed with signal feed back to intelligent controller, intelligent controller is then controlled voltage-regulating system generator set is carried out pressure regulation work, to satisfy the voltage rating that starts heavy-duty generator.
As a kind of preferred version of high-voltage large-capacity motor emergency starting with generator set, the second feedback module also is set in the described Intelligent control cabinet, the input end of described the second feedback module links to each other with the output terminal of described Intelligent control cabinet, and the output terminal of described the second feedback module links to each other with the input end of described control switch.By the second feedback module is set, can make control switch can be timely behind combined floodgate with signal feed back to intelligent controller, intelligent controller then starts by generator set control loop generator set, namely is that the rotating speed of generator set is pass on rated speed from 0.
As a kind of preferred version of high-voltage large-capacity motor emergency starting with generator set, described generator set is the emergency diesel dynamo group.
A kind of high-voltage large-capacity motor emergency starting starting method of generator set may further comprise the steps:
S10, send the starting electrical machinery signal by control panel to Intelligent control cabinet;
S20, Intelligent control cabinet close a floodgate control switch by switch control circuit;
After S30, control switch closed a floodgate, the first feedback module sent back Intelligent control cabinet with switching signal;
After S40, Intelligent control cabinet are received the control switch switching signal, start by generator set control circuit controls generator set;
After the rotating speed of S50, generator set reached rated speed, the second feedback module sent back Intelligent control cabinet with signal;
S60, Intelligent control cabinet rise to voltage rating by the voltage of voltage-regulating system control generator set gradually from 0V, and the rotating speed of the large capacity motor that is connected with generator set simultaneously turns by 0 and rises to rated speed.
As a kind of preferred version of high-voltage large-capacity motor emergency starting with the starting method of generator set, described generator set is the emergency diesel dynamo group.
The contrast prior art, beneficial effect of the present invention is: by between generator set and large capacity motor control switch being set, and an Intelligent control cabinet is set to be controlled generator set and control switch, so that large capacity motor can start according to the rules, and whole start-up course does not need to be equipped with soft initiator or frequency variator, equipment investment has reduced by 40% on the basis that soft initiator starts or frequency variator starts, the capacity of the diesel power generation unit that uses in this generator set simultaneously only is 1.2～1.5 times of the capacity of large capacity motor, reduced greatly the volume of generator set, and then manufacturing and maintenance cost are reduced.
Description of drawings
Fig. 1 is the structure principle chart that high-voltage large-capacity motor emergency starting of the present invention is used generator set;
Fig. 2 is the control principle drawing that high-voltage large-capacity motor emergency starting of the present invention is used generator set;
Fig. 3 is the process flow diagram that high-voltage large-capacity motor emergency starting of the present invention is used generator set.
Among the figure:
1, Intelligent control cabinet; 2, generator set; 3, control switch; 4, large capacity motor; 5, generator set control loop; 6, switch control circuit.
Embodiment
Further specify technological scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
As shown in Figures 1 to 3, high-voltage large-capacity motor emergency starting generator set among this embodiment, comprise generator set 2, output terminal at generator set 2 connects large capacity motor 4, between generator set 2 and the heavy-duty generator 4 control switch 3 is set, be provided for controlling the Intelligent control cabinet 1 of its rotating speed and voltage on the generator set 2, the output terminal of Intelligent control cabinet 1 is connected with the input end of control switch 3, and is used for controlling the combined floodgate of control switch 3 and opening a sluice gate.
Voltage-regulating system, generator set control loop 5 and switch control circuit 6 are set in the Intelligent control cabinet, the input end of voltage-regulating system, generator set control loop 5 and switch control circuit 6 all links to each other with the output terminal of Intelligent control cabinet 1, the output terminal of voltage-regulating system links to each other with the input end of generator set 2, the output terminal in generator set control loop 5 links to each other with the input end of generator set 2, and the output terminal of switch control circuit 6 links to each other with the input end of control switch 3.
Control panel also is set on the Intelligent control cabinet 1, and control panel carries out practical operation to voltage-regulating system, generator set control loop 5 and switch control circuit 6.
The first feedback module also is set in the Intelligent control cabinet 1, and the input end of the first feedback module links to each other with the output terminal of Intelligent control cabinet 1, and the output terminal of the first feedback module links to each other with the input end of generator set 2.
The second feedback module also is set in the Intelligent control cabinet 1, and the input end of the second feedback module links to each other with the output terminal of Intelligent control cabinet 1, and the output terminal of the second feedback module links to each other with the input end of control switch 3.
In the present embodiment, generator set 2 is the emergency diesel dynamo group.
Adopt high-voltage large-capacity motor emergency starting of the present invention with generator set to the method that large capacity motor starts, may further comprise the steps:
S10, send the starting electrical machinery signal by control panel to Intelligent control cabinet 1;
S20, Intelligent control cabinet 1 close a floodgate control switch 3 by switch control circuit 6;
After S30, control switch 3 closed a floodgate, the first feedback module sent back Intelligent control cabinet 1 with switching signal;
After S40, Intelligent control cabinet 1 are received control switch 3 switching signals, start by generator set control loop 5 control emergency diesel dynamo groups;
After the rotating speed of S50, emergency diesel dynamo group reached rated speed, the second feedback module sent back Intelligent control cabinet 1 with signal;
S60, Intelligent control cabinet 1 rise to voltage rating by the voltage of voltage-regulating system control emergency diesel dynamo group gradually from 0V, the rotating speed of the large capacity motor 4 that is connected with the emergency diesel dynamo group simultaneously turns by 0 and rises to rated speed, finishes the startup of large capacity motor.
Know-why of the present invention has below been described in conjunction with specific embodiments.These are described just in order to explain principle of the present invention, and can not be interpreted as by any way limiting the scope of the invention.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (7)
1. high-voltage large-capacity motor emergency starting generator set, comprise generator set, the output terminal of described generator set connects large capacity motor, it is characterized in that, between described generator set and the described heavy-duty generator control switch is set, be provided for controlling the Intelligent control cabinet of its rotating speed and voltage on the described generator set, the output terminal of described Intelligent control cabinet is connected with the input end of described control switch, and is used for controlling the combined floodgate of described control switch and opening a sluice gate.
2. high-voltage large-capacity motor emergency starting generator set according to claim 1, it is characterized in that, in the described Intelligent control cabinet voltage-regulating system is set, generator set control loop and switch control circuit, described voltage-regulating system, the input end of generator set control loop and switch control circuit all links to each other with the output terminal of described Intelligent control cabinet, the output terminal of described voltage-regulating system links to each other with the input end of described generator set, the output terminal in described generator set control loop links to each other with the input end of described generator set, and the output terminal of described switch control circuit links to each other with the input end of described control switch.
3. high-voltage large-capacity motor emergency starting generator set according to claim 2, it is characterized in that, the first feedback module also is set in the described Intelligent control cabinet, the input end of described the first feedback module links to each other with the output terminal of described Intelligent control cabinet, and the output terminal of described the first feedback module links to each other with the input end of described generator set.
4. high-voltage large-capacity motor emergency starting generator set according to claim 2, it is characterized in that, the second feedback module also is set in the described Intelligent control cabinet, the input end of described the second feedback module links to each other with the output terminal of described Intelligent control cabinet, and the output terminal of described the second feedback module links to each other with the input end of described control switch.
5. according to claim 1 to 4 arbitrary described high-voltage large-capacity motor emergency starting generator set, it is characterized in that, described generator set is the emergency diesel dynamo group.
6. the starting method of a high-voltage large-capacity motor emergency starting usefulness generator set is characterized in that, may further comprise the steps:
S10, send the starting electrical machinery signal by control panel to Intelligent control cabinet;
S20, Intelligent control cabinet close a floodgate control switch by switch control circuit;
After S30, control switch closed a floodgate, the first feedback module sent back Intelligent control cabinet with switching signal;
After S40, Intelligent control cabinet are received the control switch switching signal, start by generator set control circuit controls generator set;
After the rotating speed of S50, generator set reached rated speed, the second feedback module sent back Intelligent control cabinet with signal;
S60, Intelligent control cabinet rise to voltage rating by the voltage of voltage-regulating system control generator set gradually from 0V, and the rotating speed of the large capacity motor that is connected with generator set simultaneously turns by 0 and rises to rated speed.
7. starting method according to claim 6 is characterized in that, described generator set is the emergency diesel dynamo group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310002910.9A CN103061943B (en) | 2013-01-05 | 2013-01-05 | High-voltage large-capacity motor emergency starting generator set and starting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310002910.9A CN103061943B (en) | 2013-01-05 | 2013-01-05 | High-voltage large-capacity motor emergency starting generator set and starting method |
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| CN103061943A true CN103061943A (en) | 2013-04-24 |
| CN103061943B CN103061943B (en) | 2016-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771267A (en) * | 2014-02-14 | 2014-05-07 | 上海振华重工(集团)股份有限公司 | Container hoisting device electrified by LNG (Liquefied Natural Gas) fuel gas power |
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| US20070236019A1 (en) * | 2006-04-10 | 2007-10-11 | Chih-Chuan Chen | Self-support power generating system |
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| CN202140182U (en) * | 2011-07-19 | 2012-02-08 | 广州威能机电有限公司 | Automatic controller for diesel power generation set |
| CN203201708U (en) * | 2013-01-05 | 2013-09-18 | 广东康菱动力科技有限公司 | Generator set for emergency starting of high-voltage high-capacity motor |
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2013
- 2013-01-05 CN CN201310002910.9A patent/CN103061943B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2077168U (en) * | 1990-06-30 | 1991-05-15 | 中国人同解放军第二炮兵工程设计研究所 | Supply control device of stand-by generator group |
| US7119450B2 (en) * | 2004-06-01 | 2006-10-10 | Illinois Tool Works Inc. | Fuel saving engine driven aircraft ground power device and method of use |
| CN1941603A (en) * | 2005-07-04 | 2007-04-04 | 松下电器产业株式会社 | Generator control device and refrigeration cycle device |
| US20070236019A1 (en) * | 2006-04-10 | 2007-10-11 | Chih-Chuan Chen | Self-support power generating system |
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| US20110175357A1 (en) * | 2010-01-19 | 2011-07-21 | Frank Navetta | Redundant combustion engine starting systems for emergency generators |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103771267A (en) * | 2014-02-14 | 2014-05-07 | 上海振华重工(集团)股份有限公司 | Container hoisting device electrified by LNG (Liquefied Natural Gas) fuel gas power |
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| CN103061943B (en) | 2016-03-23 |
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