CN103061943B - High-voltage large-capacity motor emergency starting generator set and starting method - Google Patents
High-voltage large-capacity motor emergency starting generator set and starting method Download PDFInfo
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- CN103061943B CN103061943B CN201310002910.9A CN201310002910A CN103061943B CN 103061943 B CN103061943 B CN 103061943B CN 201310002910 A CN201310002910 A CN 201310002910A CN 103061943 B CN103061943 B CN 103061943B
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Abstract
The present invention discloses a kind of high-voltage large-capacity motor emergency starting generator set, comprise generator set and coupled large capacity motor, between generator set and large capacity motor, control switch is set, generator set is arranged the Intelligent control cabinet for controlling its rotating speed and voltage, the output terminal of Intelligent control cabinet is connected with the input end of control switch, and for the combined floodgate that controls control switch with open a sluice gate.By arranging control switch between generator set and large capacity motor, and arrange an Intelligent control cabinet to control generator set and control switch, large capacity motor can be started according to the rules, and whole start-up course does not need to be equipped with soft initiator or frequency variator, equipment investment reduces 40% on the basis that soft initiator starts or frequency variator starts, and the capacity of the diesel generator group simultaneously used in this generator set is only 1.2 ~ 1.5 times of the capacity of large capacity motor.
Description
Technical field
The present invention relates to emergency power generation field of power, particularly relate 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 scales such as metallurgy, coal, chemical industry and single-machine capacity, high pressure (3 ~ 10kv) large-size machine proportion is in the industrial production increasing.For high-voltage large-capacity motor, its Starting mode adopts following several mode mostly: total head directly starts, auto coupling decompression start, y-δ start, soft starter starts, frequency variator starts.
Wherein, soft initiator starts and frequency variator startup is then the most frequently used two kinds of Starting mode of high-voltage large-capacity motor.
Soft initiator is selected to start high-voltage large-capacity motor, its inrush current needed is 2 ~ 3 times of rated current, for civil power electric power networks, inrush current during high-voltage large-capacity motor start-up be do not have influential, but for emergency starting diesel generating set, inrush current is excessive, emergency starting diesel generating set can be caused to shut down, so to the user having high-voltage large-capacity motor load, selected emergency starting diesel generating set is 2 ~ 3 times, high-voltage large-capacity motor, which not only adds the manufacture cost of generator set, the floor space of generator set is also made to increase.
And select frequency variator Starting mode to start high-voltage large-capacity motor, although the electric current of startup is little, 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, its structure is simple, easy to operate, do not need to be equipped with the equipment such as soft initiator or frequency variator to start large capacity motor, greatly save the input of equipment cost, reduce manufacture cost.
For reaching this object, 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 described large capacity motor, control switch is set, described generator set is arranged the Intelligent control cabinet for controlling its rotating speed and voltage, the output terminal of described Intelligent control cabinet is connected with the input end of described control switch, and for the combined floodgate that controls described control switch with open a sluice gate.
As a kind of preferred version of high-voltage large-capacity motor emergency starting generator set, in 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 is all connected with the output terminal of described Intelligent control cabinet, the output terminal of described voltage-regulating system is connected with the input end of described generator set, the output terminal in described generator set control loop is connected with the input end of described generator set, the output terminal of described switch control circuit is connected with the input end of described control switch.By arranging generator set control loop, Intelligent control cabinet can be made can to control generator set and to reach rated speed gradually from 0 turn; By arranging voltage-regulating system, Intelligent control cabinet can be made can to control the voltage of generator set after reaching rated speed and to reach voltage rating from 0V gradually, and the rotating speed of the large capacity motor be communicated with generator set can be turned from O reach rated speed gradually, thus large capacity motor is made to complete startup according to the rules.
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 generator set, in described Intelligent control cabinet, the first feedback module is also set, the input end of described first feedback module is connected with the output terminal of described Intelligent control cabinet, and the output terminal of described first feedback module is connected with the input end of described generator set.By arranging the first feedback module, can make generator set when reaching rated speed can timely by signal feed back to intelligent controller, intelligent controller then controls voltage-regulating system and carries out pressure regulation work to generator set, with the voltage rating of satisfied startup large capacity motor.
As a kind of preferred version of high-voltage large-capacity motor emergency starting generator set, in described Intelligent control cabinet, the second feedback module is also set, the input end of described second feedback module is connected with the output terminal of described Intelligent control cabinet, and the output terminal of described second feedback module is connected with the input end of described control switch.By arranging the second feedback module, can make control switch after combined floodgate can timely by signal feed back to intelligent controller, intelligent controller is then started by generator set control loop generator set, is namely that the rotating speed of generator set passs on rated speed from 0.
As a kind of preferred version of high-voltage large-capacity motor emergency starting generator set, described generator set is diesel emergency generating set.
A starting method for high-voltage large-capacity motor emergency starting generator set, comprises the following steps:
S10, send starting electrical machinery signal by control panel to Intelligent control cabinet;
Control switch is closed a floodgate by switch control circuit by S20, Intelligent control cabinet;
After S30, control switch close a floodgate, switching signal is sent back Intelligent control cabinet by the first feedback module;
After S40, Intelligent control cabinet receive control switch switching signal, started by generator set control circuit controls generator set;
After the rotating speed of S50, generator set reaches rated speed, signal is sent back Intelligent control cabinet by the second feedback module;
The voltage that S60, Intelligent control cabinet control generator set by voltage-regulating system rises to voltage rating gradually from 0V, and the rotating speed of the large capacity motor be simultaneously connected with generator set rises to rated speed by 0 turn.
As a kind of preferred version of the starting method of high-voltage large-capacity motor emergency starting generator set, described generator set is diesel emergency generating set.
Contrast prior art, beneficial effect of the present invention is: by arranging control switch between generator set and large capacity motor, and arrange an Intelligent control cabinet to control generator set and control switch, large capacity motor can be started according to the rules, and whole start-up course does not need to be equipped with soft initiator or frequency variator, equipment investment reduces 40% on the basis that soft initiator starts or frequency variator starts, the capacity of the diesel generator group simultaneously used in this generator set is only 1.2 ~ 1.5 times of the capacity of large capacity motor, reduce the volume of generator set greatly, and then manufacture and maintenance cost are reduced.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of high-voltage large-capacity motor emergency starting generator set of the present invention;
Fig. 2 is the control principle drawing of high-voltage large-capacity motor emergency starting generator set of the present invention;
Fig. 3 is the process flow diagram of high-voltage large-capacity motor emergency starting generator set of the present invention.
In 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
Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
As shown in Figures 1 to 3, high-voltage large-capacity motor emergency starting generator set in this embodiment, comprise generator set 2, large capacity motor 4 is connected at the output terminal of generator set 2, control switch 3 is set between generator set 2 and large capacity motor 4, generator set 2 is arranged the Intelligent control cabinet 1 for controlling its rotating speed and voltage, the output terminal of Intelligent control cabinet 1 is connected with the input end of control switch 3, and for the combined floodgate that controls control switch 3 with open a sluice gate.
Voltage-regulating system, generator set control loop 5 and switch control circuit 6 are set in Intelligent control cabinet, the input end of voltage-regulating system, generator set control loop 5 and switch control circuit 6 is all connected with the output terminal of Intelligent control cabinet 1, the output terminal of voltage-regulating system is connected with the input end of generator set 2, the output terminal in generator set control loop 5 is connected with the input end of generator set 2, and the output terminal of switch control circuit 6 is connected with the input end of control switch 3.
Intelligent control cabinet 1 also arranges control panel, and control panel carries out practical operation to voltage-regulating system, generator set control loop 5 and switch control circuit 6.
Also arrange the first feedback module in Intelligent control cabinet 1, the input end of the first feedback module is connected with the output terminal of Intelligent control cabinet 1, and the output terminal of the first feedback module is connected with the input end of generator set 2.
Also arrange the second feedback module in Intelligent control cabinet 1, the input end of the second feedback module is connected with the output terminal of Intelligent control cabinet 1, and the output terminal of the second feedback module is connected with the input end of control switch 3.
In the present embodiment, generator set 2 is diesel emergency generating set.
The method adopting high-voltage large-capacity motor emergency starting generator set of the present invention to start large capacity motor, comprises the following steps:
S10, send starting electrical machinery signal by control panel to Intelligent control cabinet 1;
Control switch 3 is closed a floodgate by switch control circuit 6 by S20, Intelligent control cabinet 1;
After S30, control switch 3 close a floodgate, switching signal is sent back Intelligent control cabinet 1 by the first feedback module;
After S40, Intelligent control cabinet 1 receive control switch 3 switching signal, control diesel emergency generating set by generator set control loop 5 and start;
After the rotating speed of S50, diesel emergency generating set reaches rated speed, signal is sent back Intelligent control cabinet 1 by the second feedback module;
The voltage that S60, Intelligent control cabinet 1 control diesel emergency generating set by voltage-regulating system rises to voltage rating gradually from 0V, the rotating speed of the large capacity motor 4 be simultaneously connected with diesel emergency generating set rises to rated speed by 0 turn, completes the startup of large capacity motor.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.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 (4)
1. a 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 described large capacity motor, control switch is set, described generator set is arranged the Intelligent control cabinet for controlling its rotating speed and voltage, the output terminal of described Intelligent control cabinet is connected with the input end of described control switch, and for the combined floodgate that controls described control switch with open a sluice gate;
Voltage-regulating system, generator set control loop and switch control circuit are set in described Intelligent control cabinet, the input end of described voltage-regulating system, generator set control loop and switch control circuit is all connected with the output terminal of described Intelligent control cabinet, the output terminal of described voltage-regulating system is connected with the input end of described generator set, the output terminal in described generator set control loop is connected with the input end of described generator set, and the output terminal of described switch control circuit is connected with the input end of described control switch; In described Intelligent control cabinet, the first feedback module is also set, and the second feedback module, the input end of described first feedback module is connected with the output terminal of described Intelligent control cabinet, and the output terminal of described first feedback module is connected with the input end of described generator set; The input end of described second feedback module is connected with the output terminal of described Intelligent control cabinet, and the output terminal of described second feedback module is connected with the input end of described control switch.
2. high-voltage large-capacity motor emergency starting generator set according to claim 1, it is characterized in that, described generator set is diesel emergency generating set.
3. a starting method for high-voltage large-capacity motor emergency starting generator set, is characterized in that, comprise the following steps:
S10, send starting electrical machinery signal by control panel to Intelligent control cabinet;
Control switch is closed a floodgate by switch control circuit by S20, Intelligent control cabinet;
After S30, control switch close a floodgate, switching signal is sent back Intelligent control cabinet by the first feedback module;
After S40, Intelligent control cabinet receive control switch switching signal, started by generator set control circuit controls generator set;
After the rotating speed of S50, generator set reaches rated speed, signal is sent back Intelligent control cabinet by the second feedback module;
The voltage that S60, Intelligent control cabinet control generator set by voltage-regulating system rises to voltage rating gradually from 0V, and the rotating speed of the large capacity motor be simultaneously connected with generator set rises to rated speed by 0 turn.
4. starting method according to claim 3, is characterized in that, described generator set is diesel emergency generating set.
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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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| 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 CN103061943A (en) | 2013-04-24 |
| CN103061943B true CN103061943B (en) | 2016-03-23 |
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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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| US7119450B2 (en) * | 2004-06-01 | 2006-10-10 | Illinois Tool Works Inc. | Fuel saving engine driven aircraft ground power device and method of use |
| CN101153555A (en) * | 2006-09-28 | 2008-04-02 | 科泰电源设备（上海）有限公司 | Diesel generating set with nuclear safety standard |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| JP4839700B2 (en) * | 2005-07-04 | 2011-12-21 | パナソニック株式会社 | Generator control device and refrigeration cycle device |
| US20070236019A1 (en) * | 2006-04-10 | 2007-10-11 | Chih-Chuan Chen | Self-support power generating system |
| JP5158682B2 (en) * | 2007-09-25 | 2013-03-06 | 本田技研工業株式会社 | Power generation control device |
| CN201409109Y (en) * | 2009-03-25 | 2010-02-17 | 冯宝泉 | Diesel generator set intelligent control system |
| US8598728B2 (en) * | 2010-01-19 | 2013-12-03 | Frank Navetta | Redundant combustion engine starting systems for emergency generators |
| 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 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7119450B2 (en) * | 2004-06-01 | 2006-10-10 | Illinois Tool Works Inc. | Fuel saving engine driven aircraft ground power device and method of use |
| CN101153555A (en) * | 2006-09-28 | 2008-04-02 | 科泰电源设备（上海）有限公司 | Diesel generating set with nuclear safety standard |
| 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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