CN202076794U - Device capable of preventing no-voltage of control bus - Google Patents

Device capable of preventing no-voltage of control bus Download PDF

Info

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
bus
contactor
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
Application number
CN2011201215549U
Other languages
Chinese (zh)
Inventor
王仕勇
汪琳琳
柳文
门宇华
黄河
冯平
戴小川
陈卫彬
权晓艳
徐安康
柏旭
朱斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Original Assignee
Guangyuan Electric Power Bureau Of Sichuan Electric Power Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangyuan Electric Power Bureau Of Sichuan Electric Power Co filed Critical Guangyuan Electric Power Bureau Of Sichuan Electric Power Co
Priority to CN2011201215549U priority Critical patent/CN202076794U/en
Application granted granted Critical
Publication of CN202076794U publication Critical patent/CN202076794U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

The female decompression device of prevention and control
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.
CN2011201215549U 2011-04-22 2011-04-22 Device capable of preventing no-voltage of control bus Expired - Lifetime CN202076794U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN204316189U (en) Direct current system switch remote operation anti-error system
CN206126787U (en) A scram circuit for stacker
CN202076794U (en) Device capable of preventing no-voltage of control bus
CN204118813U (en) Direct-current charging post main circuit dual control electric power system
CN203645325U (en) Double-circuit power supply intelligent communication controller
CN203071637U (en) DC power supply connection control apparatus
CN202084913U (en) Automatic switching device for overdischarging of battery in direct current power supply system
CN204706876U (en) A kind of circuit preventing storage battery over-discharge can
CN203434739U (en) Intelligent-type networking system for direct-current contactor of communication power supply
CN203014475U (en) Control bus voltage loss prevention device
CN204792536U (en) Disconnected electrical interlocks of two unifications
CN204905103U (en) One closes two disconnected electrical interlockss
CN204792535U (en) Disconnected electrical interlocks of an unification
CN201699423U (en) Three-phase power voltage stabilizer with three-phase simultaneous output function and three-single-phase independent output function
CN204249958U (en) A kind of pure electric coach high voltage interlock circuit
CN204332747U (en) It is anti-that banded cable electricity closes earthing interlocker by mistake, anti-banded cable earthing closes on-load switch interlocker by mistake
CN203434740U (en) Intelligent-type networking system for direct-current contactor of operational power supply
CN203039423U (en) Two direct current switching circuits of DEH
CN203911141U (en) Timing power socket
CN102832856B (en) Medium-voltage soft starting device
CN202889258U (en) Medium-voltage soft starter
CN202957654U (en) Electricity-interference-resistant control loop of alternating current low voltage electric comprehensive automatic system
CN202712813U (en) Voltage overload protector possessing automatic recovery function
CN202535168U (en) Bus capacitor charging circuit of photovoltaic inverter
CN204464975U (en) Safety distribution cabinet

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: STATE ELECTRIC NET CROP.

Effective date: 20131231

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

Granted publication date: 20111214

CX01 Expiry of patent term