CN205283235U - Device for preventing low pressure power supply branch road closes ring - Google Patents
Device for preventing low pressure power supply branch road closes ring Download PDFInfo
- Publication number
- CN205283235U CN205283235U CN201520944302.4U CN201520944302U CN205283235U CN 205283235 U CN205283235 U CN 205283235U CN 201520944302 U CN201520944302 U CN 201520944302U CN 205283235 U CN205283235 U CN 205283235U
- Authority
- CN
- China
- Prior art keywords
- amplifier
- branch road
- resistance
- power supply
- 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 - Fee Related
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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
-
- 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
- Y04S20/221—General power management systems
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a device for preventing low pressure power supply branch road closes ring technical scheme, include that two tunnel low pressure for same load power supply exchange the branch road, all set up air switch, recoverable button, contactor on two ways, exchanging a way, two low pressure all be provided with current transformer on, current transformer be connected with the controller, the controller pass through warning circuit and be connected with the alarm. The device of this scheme is avoided closing the ring to two tunnel interchange branch roads that same load goes on supplying power to can real -time supervision, in case the discovery close the ring phenomenon can timely warning, avoid the emergence of dangerous accident.
Description
Technical field
The utility model relates to a kind of device preventing low-voltage power supply branch road cyclization.
Background technology
In the prior art, known technology is in recent years, along with socio-economic development, whole nation substation especially intelligent substation quantity be on the increase, interior exchange screen equipment of in substation two systems especially being stood carries out two power safety and powers and seem particularly important. On the current technology; carry out secondary AC number of devices in the station of two Power supply numerous; but because design reasons, often there will be the situation of two-way power supply in the cyclization of air switch place, directly in impact station, ac power supply system even threatens ground connection to become high-tension side safety. This is the weak point existing for prior art.
Summary of the invention
The purpose of this utility model is exactly the deficiency existing for prior art, and a kind of device technique scheme preventing low-voltage power supply branch road cyclization is provided, the device of the program avoids the two-way exchange branch road cyclization same load powered, and can Real-Time Monitoring, once find that cyclization phenomenon can be reported to the police timely, avoid the generation of Peril Incident.
This scheme is achieved by the following technical measures: a kind of device preventing low-voltage power supply branch road cyclization, comprise the two-way low-voltage alternating-current branch road for same load supplying, it is characterized in that: on the first low-voltage alternating-current branch road L1, be serially connected with the first air switch K1, the first recoverable button QA1, the first contactor C1, 2nd low-voltage alternating-current branch road L2 is connected in series the 2nd air switch K2, 2nd recoverable button QA2, 2nd contactor C2, first contact C1-1 button QA1 recoverable with first of the first contactor is in parallel, 2nd contact C1-2 of the first contactor connects with the 2nd contactor C2, first contact C2-1 of the 2nd contactor button QA2 recoverable with the 2nd is in parallel, 2nd contact C2-2 of the 2nd contactor connects with the first contactor C1, in addition, two low-voltage alternating-current branch roads are provided with current transformer, described current transformer is connected with controller, described controller is connected with warning howler by warning circuit.
Described warning circuit comprises the first amplifier IC1, the end of oppisite phase of the first amplifier IC1 is connected with controller by the 8th resistance R8, the end of oppisite phase of the first amplifier IC1 is connected with 7 pin of the first amplifier IC1 by the first resistance R1, the non-oppisite phase end of the first amplifier IC1 is by the 2nd resistance R2 and the 3rd resistance R3 ground connection, the non-oppisite phase end of the first amplifier IC1 is connected with+VCC by the 9th resistance R9, the 4 pin ground connection of the first amplifier IC1, 7 pin of the first amplifier IC1 are connected with 6 pin of the first amplifier IC1 by slip varistor RB, first amplifier IC16 pin is by the first electric capacity C1, first diode D1 is connected with the non-oppisite phase end of the 2nd amplifier IC2, the end of oppisite phase of the 2nd amplifier IC2 is by the 3rd resistance R3 ground connection, the non-oppisite phase end of the 2nd amplifier IC2 is by the 4th resistance R4 and ground connection, the non-oppisite phase end of the 2nd amplifier IC2 is by first diode D1, 5th resistance R5 ground connection, the 4 pin ground connection of the 2nd amplifier IC2, 7 pin of the 2nd amplifier IC2 are connected with+VCC, 6 pin of the 2nd amplifier IC2 are connected with the base stage of a triode VT by the 6th resistance, the grounded emitter of triode VT, the collector electrode of triode VT is connected with+VCC by warning howler B.
Described warning light is LED.
Described+VCC is 12V.
Described warning howler is hummer.
Having the 7th resistance R7 in parallel with described warning howler B, the 7th described resistance is connected with a warning light.
Described triode is NPN triode.
Described controller and a 3G model calling.
The useful effect of this scheme can be learnt according to describing of such scheme, due to the existence of two contactors in this scenario, the switching interlocking of two circuits can be realized, avoid powering simultaneously, and there is the existence of current sense device, the current conditions of two circuits can being detected timely, controller can control alarm equipment alarm according to the situation of two circuit, and information is sent to mobile phone or the parametric controller of setting by 3G module; When two current sense devices only one electric current detected time, illustrate and do not form cyclization, if when having electric current, controller with regard to control warning howler report to the police, avoid the generation of accident. Two branch roads are alternating current 220V. It thus is seen that the utility model compared with prior art, has outstanding substantive distinguishing features and significant progress, its useful effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment.
Fig. 2 is the schematic circuit of warning circuit.
Embodiment
For the technology feature of this scheme can be clearly demonstrated, below by an embodiment, and in conjunction with its accompanying drawing, this scheme is set forth.
Can be found out by accompanying drawing, a kind of device preventing low-voltage power supply branch road cyclization of this scheme, comprise the two-way low-voltage alternating-current branch road for same load supplying, the first low-voltage alternating-current branch road L1 is serially connected with the first air switch K1, the first recoverable button QA1, the first contactor C1, 2nd low-voltage alternating-current branch road L2 is connected in series the 2nd air switch K2, 2nd recoverable button QA2, 2nd contactor C2, first contact C1-1 button QA1 recoverable with first of the first contactor is in parallel, 2nd contact C1-2 of the first contactor connects with the 2nd contactor C2, first contact C2-1 of the 2nd contactor button QA2 recoverable with the 2nd is in parallel, 2nd contact C2-2 of the 2nd contactor connects with the first contactor C1, in addition, first low-voltage alternating-current branch road L1 arranges first current transformer T1, 2nd low-voltage alternating-current branch road L2 arranges the 2nd current transformer T2, described current transformer is connected with controller, described controller is connected with warning howler by warning circuit. described controller and a 3G model calling.
Described warning circuit comprises the first amplifier IC1, the end of oppisite phase of the first amplifier IC1 is connected with controller by the 8th resistance R8, the end of oppisite phase of the first amplifier IC1 is connected with 7 pin of the first amplifier IC1 by the first resistance R1, the non-oppisite phase end of the first amplifier IC1 is by the 2nd resistance R2 and the 3rd resistance R3 ground connection, the non-oppisite phase end of the first amplifier IC1 is connected with+VCC by the 9th resistance R9, the 4 pin ground connection of the first amplifier IC1, 7 pin of the first amplifier IC1 are connected with 6 pin of the first amplifier IC1 by slip varistor RB, first amplifier IC16 pin is by the first electric capacity C1, first diode D1 is connected with the non-oppisite phase end of the 2nd amplifier IC2, the end of oppisite phase of the 2nd amplifier IC2 is by the 3rd resistance R3 ground connection, the non-oppisite phase end of the 2nd amplifier IC2 is by the 4th resistance R4 and ground connection, the non-oppisite phase end of the 2nd amplifier IC2 is by first diode D1, 5th resistance R5 ground connection, the 4 pin ground connection of the 2nd amplifier IC2, 7 pin of the 2nd amplifier IC2 are connected with+VCC, 6 pin of the 2nd amplifier IC2 are connected with the base stage of a triode VT by the 6th resistance, the grounded emitter of triode VT, the collector electrode of triode VT is connected with+VCC by warning howler B. described warning light is LED. described+VCC is 12V. described warning howler is hummer. having the 7th resistance R7 in parallel with described warning howler B, the 7th described resistance is connected with a warning light. described triode is NPN triode.
Claims (8)
1. prevent a device for low-voltage power supply branch road cyclization, comprise the two-way low-voltage alternating-current branch road for same load supplying, it is characterized in that: on the first low-voltage alternating-current branch road L1, be serially connected with the first air switch K1, the first recoverable button QA1, the first contactor C1, 2nd low-voltage alternating-current branch road L2 is connected in series the 2nd air switch K2, 2nd recoverable button QA2, 2nd contactor C2, first contact C1-1 button QA1 recoverable with first of the first contactor is in parallel, 2nd contact C1-2 of the first contactor connects with the 2nd contactor C2, first contact C2-1 of the 2nd contactor button QA2 recoverable with the 2nd is in parallel, 2nd contact C2-2 of the 2nd contactor connects with the first contactor C1, in addition, two low-voltage alternating-current branch roads are provided with current transformer, described current transformer is connected with controller, described controller is connected with warning howler by warning circuit.
2. the device preventing low-voltage power supply branch road cyclization according to claim 1, it is characterized in that: described warning circuit comprises the first amplifier IC1, the end of oppisite phase of the first amplifier IC1 is connected with controller by the 8th resistance R8, the end of oppisite phase of the first amplifier IC1 is connected with 7 pin of the first amplifier IC1 by the first resistance R1, the non-oppisite phase end of the first amplifier IC1 is by the 2nd resistance R2 and the 3rd resistance R3 ground connection, the non-oppisite phase end of the first amplifier IC1 is connected with+VCC by the 9th resistance R9, the 4 pin ground connection of the first amplifier IC1, 7 pin of the first amplifier IC1 are connected with 6 pin of the first amplifier IC1 by slip varistor RB, first amplifier IC16 pin is by the first electric capacity C1, first diode D1 is connected with the non-oppisite phase end of the 2nd amplifier IC2, the end of oppisite phase of the 2nd amplifier IC2 is by the 3rd resistance R3 ground connection, the non-oppisite phase end of the 2nd amplifier IC2 is by the 4th resistance R4 ground connection, the non-oppisite phase end of the 2nd amplifier IC2 is by first diode D1, 5th resistance R5 ground connection, the 4 pin ground connection of the 2nd amplifier IC2, 7 pin of the 2nd amplifier IC2 are connected with+VCC, 6 pin of the 2nd amplifier IC2 are connected with the base stage of a triode VT by the 6th resistance, the grounded emitter of triode VT, the collector electrode of triode VT is connected with+VCC by warning howler B.
3. the device preventing low-voltage power supply branch road cyclization according to claim 2, is characterized in that: described+VCC is 12V.
4. the device preventing low-voltage power supply branch road cyclization according to claim 2, is characterized in that: described warning howler is hummer.
5. the device preventing low-voltage power supply branch road cyclization according to claim 2 or 4, is characterized in that: have the 7th resistance R7 in parallel with described warning howler B, the 7th described resistance is connected with a warning light.
6. the device preventing low-voltage power supply branch road cyclization according to claim 5, is characterized in that: described warning light is LED.
7. the device preventing low-voltage power supply branch road cyclization according to claim 2, is characterized in that: described triode is NPN triode.
8. the device preventing low-voltage power supply branch road cyclization according to claim 1, is characterized in that: described controller and a 3G model calling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520944302.4U CN205283235U (en) | 2015-11-24 | 2015-11-24 | Device for preventing low pressure power supply branch road closes ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520944302.4U CN205283235U (en) | 2015-11-24 | 2015-11-24 | Device for preventing low pressure power supply branch road closes ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283235U true CN205283235U (en) | 2016-06-01 |
Family
ID=56067771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520944302.4U Expired - Fee Related CN205283235U (en) | 2015-11-24 | 2015-11-24 | Device for preventing low pressure power supply branch road closes ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205283235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281417A (en) * | 2015-11-24 | 2016-01-27 | 国网山东省电力公司济南供电公司 | Apparatus preventing loop closing of low voltage power supply branches |
-
2015
- 2015-11-24 CN CN201520944302.4U patent/CN205283235U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281417A (en) * | 2015-11-24 | 2016-01-27 | 国网山东省电力公司济南供电公司 | Apparatus preventing loop closing of low voltage power supply branches |
| CN105281417B (en) * | 2015-11-24 | 2018-06-15 | 国网山东省电力公司济南供电公司 | A kind of device for preventing low-voltage power supply branch cyclization |
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Legal Events
| 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: 20160601 Termination date: 20181124 |