CN204858730U - 10KV switch board secondary circuit voltage seamless handover device - Google Patents

10KV switch board secondary circuit voltage seamless handover device Download PDF

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Publication number
CN204858730U
CN204858730U CN201520615740.6U CN201520615740U CN204858730U CN 204858730 U CN204858730 U CN 204858730U CN 201520615740 U CN201520615740 U CN 201520615740U CN 204858730 U CN204858730 U CN 204858730U
Authority
CN
China
Prior art keywords
relay
normally
negative pole
coil
input
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 - Fee Related
Application number
CN201520615740.6U
Other languages
Chinese (zh)
Inventor
强荣
毛吉贵
李明正
韩大侠
吕玉伟
邓凯
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.)
Guo Wang Ningxia Electric Power Co Wuzhong Electric Co
State Grid Corp of China SGCC
Original Assignee
Guo Wang Ningxia Electric Power Co Wuzhong Electric Co
State Grid Corp of China SGCC
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 Guo Wang Ningxia Electric Power Co Wuzhong Electric Co, State Grid Corp of China SGCC filed Critical Guo Wang Ningxia Electric Power Co Wuzhong Electric Co
Priority to CN201520615740.6U priority Critical patent/CN204858730U/en
Application granted granted Critical
Publication of CN204858730U publication Critical patent/CN204858730U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a 10KV switch board secondary circuit voltage seamless handover device. Its characteristics are: including first input end (L1), second input (L2) and output, wherein there are the coil of third relay (Z3) and a coil of first relay (Z1) with the negative pole both sides are parallelly connected respectively in that first input end (L1) is anodal, and connect in parallel in second input (L2) anodal and negative pole both sides and have second relay (Z2's) coil, wherein the positive pole of first input end (L1) loops through third relay (Z3's) normally open contact, the normally closed contact of second relay (Z2), the normally open contact of first relay (Z1), first diode (D1) and meets output end positive electrode. Through using the identification, adopt the utility model discloses a device back is the 10KV switch board by two DC power supply and independently supplies power, when main power supply source breaks down, can instantaneously switch to stand -by power supply.

Description

10KV power distribution cabinet secondary circuit voltage seamless switching device
Technical field
The utility model relates to a kind of 10KV power distribution cabinet secondary circuit voltage seamless switching device.
Background technology
10KV power distribution cabinet is the controller switching equipment based on underground cable, and main feature is that floor space is little, good insulation preformance, power failure range is little when running into fault.In view of such advantage is generally used in downtown urban land, shopping centre and residential block.
Find that 10KV power distribution cabinet often there will be following fault through Long-Time Service: the DC Module 1, in 10KV power distribution cabinet damages, have an accident secondary circuit no-voltage when tripping, and switch cannot tripping.2, the 10KV power distribution cabinet put into operation more than 3 years puts into operation, and the direct-flow storage battery pool-size in cabinet is too low, have an accident tripping operation time cannot rated voltage needed for output motor, and cannot tripping switch.This shows that the damage of mechanism's DC Module and the loss of direct-flow storage battery pool-size are the main causes affecting normal deciliter of switch.If therefore can not effectively improve secondary circuit operational reliability, such accident also can occur.
Utility model content
The purpose of this utility model is to provide the 10KV power distribution cabinet secondary circuit voltage seamless switching device that a kind of structure is simple, cost is low, effectively can ensure the reliability of secondary circuit supply voltage after using.
A kind of 10KV power distribution cabinet secondary circuit voltage seamless switching device, its special feature is: comprise first input end, the second input and output, wherein be parallel with the coil of the 3rd relay and the coil of the first relay respectively at first input end positive pole and negative pole both sides, and be parallel with the coil of the second relay in the second input anode and negative pole both sides; Wherein the positive pole of first input end connects output head anode by the normally opened contact of the 3rd relay, the normally-closed contact of the second relay, the normally opened contact of the first relay, the first diode successively, and the negative pole of first input end connects negative pole of output end by the normally opened contact of the 3rd relay, the normally-closed contact of the second relay, the normally opened contact of the first relay, the second diode successively; Wherein the positive pole of the second input connects output head anode by the normally-closed contact of the 3rd relay, the normally-closed contact of the first relay, the normally opened contact of the second relay, the first diode successively, and the negative pole of the second input connects negative pole of output end by the normally-closed contact of the 3rd relay, the normally-closed contact of the first relay, the normally opened contact of the second relay, the second diode successively.
Wherein between output head anode and negative pole, be parallel with electric capacity.
Wherein be in series with resistance and diode on the coil side of the first relay, be in series with resistance and diode on the coil side of the second relay, be also in series with resistance and diode on the coil side of the 3rd relay.
Proving through using, being that 10KV power distribution cabinet is independently-powered by active and standby two DC power supply after adopting device of the present utility model, when main power supply breaks down, instantaneously can being switched to stand-by power supply.Main confession is auxiliary standby, and ensure secondary circuit supply voltage stable output, successful, simple installation, can also take out hard node signal, for dispatching and monitoring.Thus increase work efficiency, effectively reduce equipment failure rate, save plant maintenance fund.
Accompanying drawing explanation
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of 10KV power distribution cabinet secondary circuit voltage seamless switching device, comprise first input end L1, the second input L2 and output, wherein be parallel with the coil of the 3rd relay Z3 and the coil of the first relay Z1 respectively at first input end L1 positive pole and negative pole both sides, and be parallel with the coil of the second relay Z2 at the second input L2 positive pole and negative pole both sides; Wherein the positive pole of first input end L1 connects output head anode by the normally opened contact of the 3rd relay Z3, the normally-closed contact of the second relay Z2, the normally opened contact of the first relay Z1, the first diode D1 successively, and the negative pole of first input end L1 connects negative pole of output end by the normally opened contact of the 3rd relay Z3, the normally-closed contact of the second relay Z2, the normally opened contact of the first relay Z1, the second diode D2 successively; Wherein the positive pole of the second input L2 connects output head anode by the normally-closed contact of the 3rd relay Z3, the normally-closed contact of the first relay Z1, the normally opened contact of the second relay Z2, the first diode D1 successively, and the negative pole of the second input L2 connects negative pole of output end by the normally-closed contact of the 3rd relay Z3, the normally-closed contact of the first relay Z1, the normally opened contact of the second relay Z2, the second diode D2 successively.
Between output head anode and negative pole, be wherein parallel with the electric capacity C playing voltage regulation filtering effect; the resistance and diode that play protection and shunting action is in series with in addition on the coil side of the first relay Z1; be in series with same resistance and diode on the coil side of the second relay Z2, be also in series with same resistance and diode on the coil side of the 3rd relay Z3.
Above-mentioned relay can adopt direct current 24V4 group node auxiliary relay.
Using method of the present utility model and operation principle are:
As shown in Figure 1, first input end L1 connects main power source, second input L2 connects stand-by power source, first main power source is connected, now the coil of the 3rd relay Z3 and the coil of the first relay Z1 must conduct, all normally opened contacts of these two relays close, and main power source is directly connected output and exported as DC power supply.When main power source open circuit, the coil of the 3rd relay Z3 and the coil losing electricity cut-off of the first relay Z1, all normally opened contacts of these two relays disconnect, all normally-closed contacts close, the second relay Z2 that now the second input L2 is other must conduct, its all normally opened contact corresponding closes, and substitute connection output by stand-by power source and export as DC power supply, the connection of main power source and output is simultaneously disconnected.

Claims (3)

1. a 10KV power distribution cabinet secondary circuit voltage seamless switching device, it is characterized in that: comprise first input end (L1), the second input (L2) and output, wherein be parallel with the coil of the 3rd relay (Z3) and the coil of the first relay (Z1) respectively at first input end (L1) positive pole and negative pole both sides, and be parallel with the coil of the second relay (Z2) at the second input (L2) positive pole and negative pole both sides; Wherein the positive pole of first input end (L1) connects output head anode by the normally opened contact of the 3rd relay (Z3), the normally-closed contact of the second relay (Z2), the normally opened contact of the first relay (Z1), the first diode (D1) successively, and the negative pole of first input end (L1) connects negative pole of output end by the normally opened contact of the 3rd relay (Z3), the normally-closed contact of the second relay (Z2), the normally opened contact of the first relay (Z1), the second diode (D2) successively; Wherein the positive pole of the second input (L2) connects output head anode by the normally-closed contact of the 3rd relay (Z3), the normally-closed contact of the first relay (Z1), the normally opened contact of the second relay (Z2), the first diode (D1) successively, and the negative pole of the second input (L2) connects negative pole of output end by the normally-closed contact of the 3rd relay (Z3), the normally-closed contact of the first relay (Z1), the normally opened contact of the second relay (Z2), the second diode (D2) successively.
2. 10KV power distribution cabinet secondary circuit voltage seamless switching device as claimed in claim 1, is characterized in that: between output head anode and negative pole, be wherein parallel with electric capacity (C).
3. 10KV power distribution cabinet secondary circuit voltage seamless switching device as claimed in claim 1, it is characterized in that: be wherein in series with resistance and diode on the coil side of the first relay (Z1), be in series with resistance and diode on the coil side of the second relay (Z2), be also in series with resistance and diode on the coil side of the 3rd relay (Z3).
CN201520615740.6U 2015-08-14 2015-08-14 10KV switch board secondary circuit voltage seamless handover device Expired - Fee Related CN204858730U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520615740.6U CN204858730U (en) 2015-08-14 2015-08-14 10KV switch board secondary circuit voltage seamless handover device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520615740.6U CN204858730U (en) 2015-08-14 2015-08-14 10KV switch board secondary circuit voltage seamless handover device

Publications (1)

Publication Number Publication Date
CN204858730U true CN204858730U (en) 2015-12-09

Family

ID=54749243

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520615740.6U Expired - Fee Related CN204858730U (en) 2015-08-14 2015-08-14 10KV switch board secondary circuit voltage seamless handover device

Country Status (1)

Country Link
CN (1) CN204858730U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110544978A (en) * 2019-09-25 2019-12-06 江铃重型汽车有限公司 commercial vehicle and redundant power supply system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110544978A (en) * 2019-09-25 2019-12-06 江铃重型汽车有限公司 commercial vehicle and redundant power supply system thereof
CN110544978B (en) * 2019-09-25 2021-06-15 江铃汽车股份有限公司 Commercial vehicle and redundant power supply system thereof

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151209

Termination date: 20160814