CN203014475U - Control bus voltage loss prevention device - Google Patents
Control bus voltage loss prevention device Download PDFInfo
- Publication number
- CN203014475U CN203014475U CN2012205422985U CN201220542298U CN203014475U CN 203014475 U CN203014475 U CN 203014475U CN 2012205422985 U CN2012205422985 U CN 2012205422985U CN 201220542298 U CN201220542298 U CN 201220542298U CN 203014475 U CN203014475 U CN 203014475U
- Authority
- CN
- China
- Prior art keywords
- contact
- control bus
- down device
- bus
- dropping equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002265 prevention Effects 0.000 title abstract description 3
- 230000006837 decompression Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a control bus voltage loss prevention device. One end of a main step-down device is connected to an anode of a combined bus through a contact K5, and the other end of the main step-down device is connected to an anode of a control bus through a contact K6. One end of a direct current contactor is connected between the main step-down device and the contact K6 through a contact K1, and the other end of the direct current contactor is connected to a cathode of the combined bus or the control bus through a contact K3. One end of a standby step-down device is connected to the anode of the combined bus through a contact K2 and a contact K4, the other end of the standby step-down device is connected to the anode 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 matched with the direct current contactor. The standby step-down device is arranged, the switch-on and switch-off of the standby step-down device are controlled through the direct current contactor, power is turned on in the condition of an open circuit of the main step-down device, no loss of voltage of the control bus is maintained, the voltage of the control bus reaches a normal value, the structure is simple and practical, the operation is simple, and the possibility of an error is small.
Description
Technical field
The utility model relates to a kind of device that prevents the DC power system fault, is 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 the device or system be 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 power bus and control bus were 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 when device or system.And in prior art, also do not have simple in structure and effectively prevent measure.
The utility model content
The purpose of this utility model is to provide a kind of device capable of preventing no-voltage of control bus, has 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 utility model 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 standby dropping equipment,
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 control bus positive pole by contact K6;
One end of described D.C. contactor is connected between main dropping equipment and contact K6 by contact K1, and the other end is connected to by contact K3 and closes on bus or control bus negative pole;
One end of described standby dropping equipment is connected to by contact K2 and contact K4 and closes on the bus positive pole, and the other end is connected on 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 utility model play better technique effect:
Further technical scheme is to be provided with diode between above-mentioned main dropping equipment and contact K6.
According to above-mentioned a kind of device capable of preventing no-voltage of control bus, its using method comprises the following 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 standby dropping equipment, 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 standby dropping equipment is by contact K2, normally-closed contact K7 and contact K4 energising work.
Compared with prior art, the beneficial effects of the utility model are: a standby dropping equipment is set, and control the break-make of this standby dropping equipment by D.C. contactor, switch under main dropping equipment open circuit situation, 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 standby dropping equipment work.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 and Fig. 2 show an embodiment of a kind of device capable of preventing no-voltage of control bus of the utility model: a kind of device capable of preventing no-voltage of control bus, comprise main dropping equipment, D.C. contactor and standby dropping equipment,
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 control bus positive pole by contact K6;
One end of described D.C. contactor is connected between main dropping equipment and contact K6 by contact K1, and the other end is connected to by contact K3 and closes on bus or control bus negative pole;
One end of described standby dropping equipment is connected to by contact K2 and contact K4 and closes on the bus positive pole, and the other end is connected on 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 preferred embodiment according to a kind of device capable of preventing no-voltage of control bus of the utility model is provided with diode between main dropping equipment and contact K6.
According to the embodiment of a kind of device capable of preventing no-voltage of control bus of above-mentioned the utility model, its using method comprises the following 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 standby dropping equipment, 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 standby dropping equipment 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 with reference to a plurality of explanatory embodiment of the present utility model, the utility model is described 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 within execution mode will drop on 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 will be also obvious.
Claims (2)
1. device capable of preventing no-voltage of control bus is characterized in that: comprise main dropping equipment, D.C. contactor and standby dropping equipment,
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 control bus positive pole by contact K6;
One end of described D.C. contactor is connected between main dropping equipment and contact K6 by contact K1, and the other end is connected to by contact K3 and closes on bus or control bus negative pole;
One end of described standby dropping equipment is connected to by contact K2 and contact K4 and closes on the bus positive pole, and the other end is connected on 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. a kind of device capable of preventing no-voltage of control bus according to claim 1, is characterized in that: be provided with diode between described main dropping equipment and contact K6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205422985U CN203014475U (en) | 2012-10-22 | 2012-10-22 | Control bus voltage loss prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205422985U CN203014475U (en) | 2012-10-22 | 2012-10-22 | Control bus voltage loss prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014475U true CN203014475U (en) | 2013-06-19 |
Family
ID=48606032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205422985U Expired - Lifetime CN203014475U (en) | 2012-10-22 | 2012-10-22 | Control bus voltage loss prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891530A (en) * | 2012-10-22 | 2013-01-23 | 四川省电力公司广元电业局 | Control bus voltage loss prevention device |
-
2012
- 2012-10-22 CN CN2012205422985U patent/CN203014475U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891530A (en) * | 2012-10-22 | 2013-01-23 | 四川省电力公司广元电业局 | Control bus voltage loss prevention device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |