CN102891530A - Control bus voltage loss prevention device - Google Patents
Control bus voltage loss prevention device Download PDFInfo
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- CN102891530A CN102891530A CN2012104031828A CN201210403182A CN102891530A CN 102891530 A CN102891530 A CN 102891530A CN 2012104031828 A CN2012104031828 A CN 2012104031828A CN 201210403182 A CN201210403182 A CN 201210403182A CN 102891530 A CN102891530 A CN 102891530A
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- contact
- control bus
- dropping equipment
- positive pole
- bus
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Abstract
The invention discloses a control bus voltage loss prevention device. According to the device, one end of a main voltage reduction device is connected to the positive pole of a closure bus through a contact K5, and the other end of the main voltage reduction device is connected to the positive pole of a control bus through a contact K6; one end of a direct current contactor is connected between the main voltage reduction device and the contact K6 through a contact K1, and the other end of the direct current contactor is connected to the negative pole of the closure bus or the control bus through a contact K3; one end of a standby voltage reduction device is connected to the positive pole of the closure bus through a contact K2 and a contact K4, and the other end of the standby voltage reduction device is connected to the positive pole of the control bus; a normally closed contact K7 is arranged between the contact K2 and the contact K4; and the normally closed contact K7 is adaptive to the direct current contactor. According to the standby voltage reduction device, and the on/off of the standby voltage reduction device is controlled through the direct current contactor, so that the main voltage reduction device is powered up under an open circuit condition, no voltage loss of the control bus is maintained, and the voltage of the control bus reaches a normal value. The control bus voltage loss prevention device is simple in structure, practical and easy to operate, and an error is difficult to occur.
Description
Technical field
The present invention relates to a kind of device that prevents the DC power system fault, be specifically related to a kind of device capable of preventing no-voltage of control bus.
Background technology
According to State Grid Corporation of China's " measure of prevention DC power system accident " chapter 5 technical measures, article 17,, when device or system are provided with the system of regulator at power bus and control bus, must take to prevent that the regulator open circuit from causing the measure of the female decompression of control, make simultaneously controlling voltage recover normal value.
That is, when device or system when power bus and control bus are provided with the system of regulator, the control mother can be in the decompression state, causes the accident of DC power system to occur, and must adopt certain measure to prevent from controlling mother's decompression.And in the prior art, also do not have simple in structure and effectively prevent measure.
Summary of the invention
The object of the present invention is to provide a kind of device capable of preventing no-voltage of control bus, solved when device or system when power bus and control bus are provided with the system of regulator, the female problem that can be in the decompression state of control.
For solving above-mentioned technical problem, the present invention by the following technical solutions: a kind of device capable of preventing no-voltage of control bus, comprise main dropping equipment, D.C. contactor and dropping equipment for subsequent use,
One end of described main dropping equipment is connected to by contact K5 and closes on the bus positive pole, and the other end is connected on the control bus positive pole by contact K6;
One end of described D.C. contactor is connected between main dropping equipment and the contact K6 by contact K1, and the other end is connected to by contact K3 and closes on bus or the control bus negative pole;
One end of described dropping equipment for subsequent use is connected to by contact K2 and contact K4 and closes on the bus positive pole, and the other end is connected on the control bus positive pole, is provided with normally-closed contact K7 between contact K2 and contact K4, and described normally-closed contact K7 and D.C. contactor are suitable.
For making the present invention play better technique effect:
Further technical scheme is to be provided with diode between above-mentioned main dropping equipment and the contact K6.
According to above-mentioned a kind of device capable of preventing no-voltage of control bus, its using method may further comprise the steps:
Normal operating conditions, contact K1, contact K2, contact K3, contact K4, contact K5 and contact K6 is closed, and main dropping equipment is in running order;
D.C. contactor gets electric work, makes normally-closed contact K7 be in off-state;
When needing to adopt dropping equipment for subsequent use, break contact K1, contact K3, contact K5 and contact K6, the D.C. contactor dead electricity makes normally-closed contact K7 reply closure state, and dropping equipment for subsequent use is by contact K2, normally-closed contact K7 and contact K4 energising work.
Compared with prior art, the invention has the beneficial effects as follows: a dropping equipment for subsequent use is set, and control the break-make of this dropping equipment for subsequent use by D.C. contactor, under main dropping equipment open circuit situation, switch on, keep not decompression of control mother, and make controlling voltage reach normal value, not only simple and practical, and simple to operate being difficult for go wrong.
Description of drawings
View when Fig. 1 is main dropping equipment work.
View when Fig. 2 is dropping equipment work for subsequent use.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 and Fig. 2 show an embodiment of a kind of device capable of preventing no-voltage of control bus of the present invention: a kind of device capable of preventing no-voltage of control bus, comprise main dropping equipment, D.C. contactor and dropping equipment for subsequent use,
One end of described main dropping equipment is connected to by contact K5 and closes on the bus positive pole, and the other end is connected on the control bus positive pole by contact K6;
One end of described D.C. contactor is connected between main dropping equipment and the contact K6 by contact K1, and the other end is connected to by contact K3 and closes on bus or the control bus negative pole;
One end of described dropping equipment for subsequent use is connected to by contact K2 and contact K4 and closes on the bus positive pole, and the other end is connected on the control bus positive pole, is provided with normally-closed contact K7 between contact K2 and contact K4, and described normally-closed contact K7 and D.C. contactor are suitable.
A kind of device capable of preventing no-voltage of control bus preferred embodiment is provided with diode between main dropping equipment and the contact K6 according to the present invention.
According to the embodiment of a kind of device capable of preventing no-voltage of control bus of the invention described above, its using method may further comprise the steps:
Normal operating conditions, contact K1, contact K2, contact K3, contact K4, contact K5 and contact K6 is closed, and main dropping equipment is in running order;
D.C. contactor gets electric work, makes normally-closed contact K7 be in off-state;
When needing to adopt dropping equipment for subsequent use, break contact K1, contact K3, contact K5 and contact K6, the D.C. contactor dead electricity makes normally-closed contact K7 reply closure state, and dropping equipment for subsequent use is by contact K2, normally-closed contact K7 and contact K4 energising work.Realized main dropping equipment under open circuit situation, the control mother is the decompression purpose not, and controlling voltage reaches normal value.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and execution mode will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (3)
1. device capable of preventing no-voltage of control bus is characterized in that: comprise main dropping equipment, D.C. contactor and dropping equipment for subsequent use,
One end of described main dropping equipment is connected to by contact K5 and closes on the bus positive pole, and the other end is connected on the control bus positive pole by contact K6;
One end of described D.C. contactor is connected between main dropping equipment and the contact K6 by contact K1, and the other end is connected to by contact K3 and closes on bus or the control bus negative pole;
One end of described dropping equipment for subsequent use is connected to by contact K2 and contact K4 and closes on the bus positive pole, and the other end is connected on the control bus positive pole, is provided with normally-closed contact K7 between contact K2 and contact K4, and described normally-closed contact K7 and D.C. contactor are suitable.
2. the female device for exerting of a kind of prevention and control according to claim 1 is characterized in that: be provided with diode between described main dropping equipment and the contact K6.
3. the female device for exerting of a kind of prevention and control according to claim 1 is characterized in that its using method may further comprise the steps:
Normal operating conditions, contact K1, contact K2, contact K3, contact K4, contact K5 and contact K6 is closed, and main dropping equipment is in running order;
D.C. contactor gets electric work, makes normally-closed contact K7 be in off-state;
When needing to adopt dropping equipment for subsequent use, break contact K1, contact K3, contact K5 and contact K6, the D.C. contactor dead electricity makes normally-closed contact K7 reply closure state, and dropping equipment for subsequent use is by contact K2, normally-closed contact K7 and contact K4 energising work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104031828A CN102891530A (en) | 2012-10-22 | 2012-10-22 | Control bus voltage loss prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104031828A CN102891530A (en) | 2012-10-22 | 2012-10-22 | Control bus voltage loss prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102891530A true CN102891530A (en) | 2013-01-23 |
Family
ID=47534948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104031828A Pending CN102891530A (en) | 2012-10-22 | 2012-10-22 | Control bus voltage loss prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891530A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020036911A1 (en) * | 2000-09-22 | 2002-03-28 | Sanyo Denki Co., Ltd. | Uniterruptible power system |
| CN201726120U (en) * | 2010-07-09 | 2011-01-26 | 重庆泊津科技有限公司 | DC voltage reduction open circuit protector |
| CN202076794U (en) * | 2011-04-22 | 2011-12-14 | 四川省电力公司广元电业局 | Device capable of preventing no-voltage of control bus |
| CN203014475U (en) * | 2012-10-22 | 2013-06-19 | 四川省电力公司广元电业局 | Control bus voltage loss prevention device |
-
2012
- 2012-10-22 CN CN2012104031828A patent/CN102891530A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020036911A1 (en) * | 2000-09-22 | 2002-03-28 | Sanyo Denki Co., Ltd. | Uniterruptible power system |
| CN201726120U (en) * | 2010-07-09 | 2011-01-26 | 重庆泊津科技有限公司 | DC voltage reduction open circuit protector |
| CN202076794U (en) * | 2011-04-22 | 2011-12-14 | 四川省电力公司广元电业局 | Device capable of preventing no-voltage of control bus |
| CN203014475U (en) * | 2012-10-22 | 2013-06-19 | 四川省电力公司广元电业局 | Control bus voltage loss prevention device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |