CN202076794U - Device capable of preventing no-voltage of control bus - Google Patents
Device capable of preventing no-voltage of control bus Download PDFInfo
- Publication number
- CN202076794U CN202076794U CN2011201215549U CN201120121554U CN202076794U CN 202076794 U CN202076794 U CN 202076794U CN 2011201215549 U CN2011201215549 U CN 2011201215549U CN 201120121554 U CN201120121554 U CN 201120121554U CN 202076794 U CN202076794 U CN 202076794U
- Authority
- CN
- China
- Prior art keywords
- control bus
- voltage
- switch
- contactor
- bus
- 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
- 230000006837 decompression Effects 0.000 claims description 9
- 230000002265 prevention Effects 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
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- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model relates to a device capable of preventing the no-voltage of a control bus, belonging to a device capable of preventing the no-voltage of the control bus, in a power grid direct-current power supply system. The device capable of preventing the no-voltage of a control bus comprises a voltage reducing device. One end of the voltage reducing device is connected with the anode of a power bus and the other end of the voltage reducing device is connected with the anode of a diode D. The cathode of the diode D is connected with the anode of the control bus. The device capable of preventing the no-voltage of the control bus is characterized in that the device additionally comprises a direct-current contactor, one end of the coil of the direct-current contactor is serially connected with a switch K1 and then is connected with the anode of the diode D, the other end of the coil of the direct-current contactor is serially connected with a switch K3 and then is connected the common cathode of the control bus and the power bus, one end of the normally-closed contact of the direct-current contactor is serially connected with a switch K2 and then is connected with the anode of the power bus, and the other end of the normally-closed contact is serially connected with a switch K4 and then is connected with the anode of the control bus. The device has the advantages that the defect of the no-voltage of the control bus, caused by open circuit of a voltage regulating device, can be effectively avoided, and the safety performance of the direct-current power supply system can be improved.
Description
Technical field
The utility model relates to the safe power supply device of power supply network DC power system, particularly prevents regulator open circuit and causes the safe power supply equipment of the power supply network DC power system of the female decompression of control.
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.And do not have such preventive measure in the existing power supply network DC power system, thereby bring unsafe factor to powered operation.
The utility model content
The purpose of this utility model provides the female decompression device of a kind of prevention and control, and with under the dropping equipment open circuit situation, the control bus still can normally.
This novel purpose is achieved in that the female decompression device of a kind of prevention and control, comprise that dropping equipment one end connects the power bus positive pole, the other end connects diode D positive pole, diode D negative pole connects control bus positive pole, also has D.C. contactor, be connected to described diode D positive pole after the one end serial connection K switch 1 of D.C. contactor coil, be connected to the two common negative pole of described control bus and power bus after the other end of the D.C. contactor coil serial connection K switch 3, be connected to the power bus positive pole after the normally closed node one end serial connection K switch 2 of D.C. contactor, be connected to control bus positive pole after this normally closed node other end serial connection K switch 4.
Above-mentioned dropping equipment model is: DW2/7-20A/35V, the D.C. contactor model is: JZC1-40Z.
The beneficial effects of the utility model are:
1, simple in structure, need not have the electrical network DC power system now and do big change, only need to add D.C. contactor and several switch.
Even 2 under the dropping equipment open circuit situation, the control bus still can keep conducting and non-decompression, thereby guarantees the normal operation (its control principle and process are seen embodiment) of secondary device.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model.
Embodiment
Among Fig. 1, dropping equipment model: DW2/7-20A/35V; D.C. contactor model: JZC1-40Z; Control female (control bus) is KM, and closing mother's (being power bus) is HM.
Fig. 1 illustrates, this novel dropping equipment one end that comprises connects the power bus positive pole, the other end connects diode D positive pole, diode D negative pole connects control bus positive pole, it is characterized in that: also have D.C. contactor, be connected to described diode D positive pole after the one end serial connection K switch 1 of D.C. contactor coil, be connected to the two common negative pole of described control bus and power bus after the other end of the D.C. contactor coil serial connection K switch 3, be connected to the power bus positive pole after the normally closed node one end serial connection K switch 2 of D.C. contactor, be connected to control bus positive pole after this normally closed node other end serial connection K switch 4.
The D.C. contactor coil voltage is supplied with by control is female, closes on a pair of normally closed node that female cathode voltage is connected on D.C. contactor, and the other end of normally closed node is connected on the positive pole of control bus.Under the normal condition, the K1 that closes, K2, K3, K4 switch, the D.C. contactor closure, normally closed node is opened, and system normally moves.
When dropping equipment was opened a way, D.C. contactor disconnected, and normally closed node closure is closed female voltage and arrived normally closed node through K2, through K4 and the female conducting of control, realized dropping equipment under open circuit situation again, controlled not decompression purpose of mother.
Claims (2)
1. the female decompression device of prevention and control, comprise, dropping equipment one end connects the power bus positive pole, the other end connects diode D positive pole, diode D negative pole connects control bus positive pole, it is characterized in that: also have D.C. contactor, be connected to described diode D positive pole after the one end serial connection K switch 1 of D.C. contactor coil, be connected to the two common negative pole of described control bus and power bus after the other end of the D.C. contactor coil serial connection K switch 3, be connected to the power bus positive pole after the normally closed node one end serial connection K switch 2 of D.C. contactor, be connected to control bus positive pole after this normally closed node other end serial connection K switch 4.
2. the female decompression device of prevention and control according to claim 1, it is characterized in that: described dropping equipment model is: DW2/7-20A/35V, the D.C. contactor model is: JZC1-40Z.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201215549U CN202076794U (en) | 2011-04-22 | 2011-04-22 | Device capable of preventing no-voltage of control bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201215549U CN202076794U (en) | 2011-04-22 | 2011-04-22 | Device capable of preventing no-voltage of control bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076794U true CN202076794U (en) | 2011-12-14 |
Family
ID=45114871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201215549U Expired - Lifetime CN202076794U (en) | 2011-04-22 | 2011-04-22 | Device capable of preventing no-voltage of control bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076794U (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 |
-
2011
- 2011-04-22 CN CN2011201215549U patent/CN202076794U/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 | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20131231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131231 Address after: 628000, Binhe Road, Nanhe dam, Sichuan, Guangyuan, 59 Patentee after: Guangyuan Electric Power Bureau of Sichuan Electric Power Company Patentee after: State Grid Corporation of China Address before: 628000, Binhe Road, Nanhe dam, Sichuan, Guangyuan, 59 Patentee before: Guangyuan Electric Power Bureau of Sichuan Electric Power Company |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |