CN203445685U - Novel power plug-in unit for microcomputer protection switch - Google Patents

Novel power plug-in unit for microcomputer protection switch Download PDF

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Publication number
CN203445685U
CN203445685U CN201320520791.1U CN201320520791U CN203445685U CN 203445685 U CN203445685 U CN 203445685U CN 201320520791 U CN201320520791 U CN 201320520791U CN 203445685 U CN203445685 U CN 203445685U
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CN
China
Prior art keywords
power supply
switching power
module
resistance
output
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
CN201320520791.1U
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Chinese (zh)
Inventor
史春旻
鲍有理
沈海平
华伟东
许小兵
仲伟宽
朱婵霞
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
State Grid Jiangsu Electric Power Co Ltd
Wuxi Power Supply Co of Jiangsu Electric Power Co
Original Assignee
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Wuxi Power Supply Co of Jiangsu Electric Power Co
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Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Jiangsu Electric Power Co Ltd, Wuxi Power Supply Co of Jiangsu Electric Power Co filed Critical State Grid Corp of China SGCC
Priority to CN201320520791.1U priority Critical patent/CN203445685U/en
Application granted granted Critical
Publication of CN203445685U publication Critical patent/CN203445685U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Abstract

The utility model relates to a novel power plug-in unit for a microcomputer protection switch. The novel power plug-in unit comprises a circuit main board; the circuit main board is provided with a switch power supply main module and a switch power supply standby module for transforming AC to required DC for output; the output terminal of the switch power supply main module and the output terminal of the switch power supply standby module are electrically connected with a base plate pin; the circuit main board is also provided with a supervision switching module; the supervision switching module is electrically connected with the switch power supply main module and the switch power supply standby module; and when the output voltage of the switch power supply main module is lower than the voltage set by the supervision switching module, the supervision switching module enables the output voltage of the switch power supply main module to be switched off, the switch power supply standby module is switched on, and the switch power supply standby module outputs the required voltage through the base plate pin. According to the novel power plug-in unit, the structure is simple and compact, usage costs are low, replacement and maintenance are convenient, and the security and reliability of electrical network power supply are effectively raised.

Description

Novel Microcomputer Protection Switching Power Supply plug-in unit
Technical field
The utility model relates to a kind of dongle configuration, and especially a kind of novel Microcomputer Protection Switching Power Supply plug-in unit belongs to the technical field of relay protection of power system.
Background technology
Microcomputer Protection switch uses in a large number in electrical network, and it has fault distinguishing and outlet trip avoidance function, and when all kinds of fault occurs electrical network, Microcomputer Protection plays the function of fault distinguishing and excision, isolated fault, is the basis of electric power netting safe running.Because Microcomputer Protection Switching Power Supply is after work 5 ~ 8 years, easily damage suddenly.Existing Microcomputer Protection Switching Power Supply plug-in unit does not comprise redundant power module, once switch power module damages, will cause Microcomputer Protection dead electricity, cisco unity malfunction, and now electrical network will, in unprotect running status, have very large potential safety hazard.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of novel Microcomputer Protection Switching Power Supply plug-in unit is provided, and it is simple and compact for structure, and use cost is low, is convenient to change safeguard, can effectively improve fail safe and the reliability of mains supply.
The technical scheme providing according to the utility model, described novel Microcomputer Protection Switching Power Supply plug-in unit, comprise circuit main board, described circuit main board is provided with for alternating current being converted to Switching Power Supply primary module and the Switching Power Supply spare module of required direct current output, the output of the output of described Switching Power Supply primary module and Switching Power Supply spare module is electrically connected to base plate contact pin, supervision handover module is also set on circuit main board, and described supervision handover module is electrically connected to Switching Power Supply primary module and Switching Power Supply spare module; When the voltage of Switching Power Supply primary module output is when monitoring the magnitude of voltage that handover module is set, monitor the output voltage of handover module closing switch power supply primary module, and starting switch power backup block, so that Switching Power Supply spare module is exported required magnitude of voltage by base plate contact pin.
Described circuit main board is provided with binding post, described binding post is electrically connected to the input of Switching Power Supply primary module and the input of Switching Power Supply spare module, and the input of Switching Power Supply primary module and Switching Power Supply spare module are electrically connected to outside input power by binding post.
One end of described circuit main board arranges back side baffle plate.
Described supervision handover module comprises the first operational amplifier, the in-phase end of described the first operational amplifier is connected with one end of one end of the first resistance, one end of the second resistance and the 3rd resistance, the other end of the first resistance is connected with voltage U i, the other end ground connection of the second resistance, the other end of the 3rd resistance is connected with the anode tap of the first diode, the cathode terminal of the first diode is connected with the output of the first operational amplifier and one end of the 4th resistance, and the other end of the 4th resistance is connected with voltage VCC; The output of the first operational amplifier is connected with the control end of Switching Power Supply primary module and the end of oppisite phase of the second operational amplifier; The end of oppisite phase of the first operational amplifier is connected with one end of voltage U R and the 5th resistance;
The other end of the 5th resistance is connected with the in-phase end of the second operational amplifier and one end of the 6th resistance, the other end of the 6th resistance is connected with the anode tap of the second diode, the cathode terminal of the second diode is connected with the output of the second operational amplifier and one end of the 7th resistance, the other end of the 7th resistance is connected with voltage VCC, and the output of the second operational amplifier is connected with the control end of Switching Power Supply spare module.
Described the first operational amplifier and the second operational amplifier all adopt LM393.Described back side baffle plate is provided with some hold-down screws.
Described Switching Power Supply primary module, Switching Power Supply spare module are all exported 5V and 24V voltage.During the output voltage of described supervision handover module stopcock power supply primary module, and output alarm information.
Advantage of the present utility model: modular Switching Power Supply primary module and Switching Power Supply spare module are set on circuit main board; installation and maintenance are convenient; monitor that handover module monitors and the magnitude of voltage of monitoring switch power supply primary module output; when the output voltage fault of Switching Power Supply primary module; monitor the output of handover module stopcock power supply primary module; and starting switch power backup block; to export required magnitude of voltage by Switching Power Supply spare module; guarantee Microcomputer Protection reliability of operation; simple and compact for structure, use cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit theory diagrams that the utility model monitors handover module.
Description of reference numerals: 1-Switching Power Supply primary module, 2-Switching Power Supply spare module, 3-monitor handover module, 4-base plate contact pin, 5-hold-down screw, 6-terminals of connecting wire, 7-back side baffle plate and 8-circuit main board.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in Figure 1: in order to improve the validity of Microcomputer Protection and reliability, the utility model comprises circuit main board 8, described circuit main board 8 is provided with for alternating current being converted to Switching Power Supply primary module 1 and the Switching Power Supply spare module 2 of required direct current output, the output of the output of described Switching Power Supply primary module 1 and Switching Power Supply spare module 2 is electrically connected to base plate contact pin 4, on circuit main board 8, also arrange and monitor handover module 3, described supervision handover module 3 is electrically connected to Switching Power Supply primary module 1 and Switching Power Supply spare module 2; When the voltage of Switching Power Supply primary module 1 output is when monitoring the magnitude of voltage that handover module 3 is set, monitor the output voltage of handover module 3 closing switch power supply primary modules 1, and starting switch power backup block 2, so that Switching Power Supply spare module 2 is by the required magnitude of voltage of base plate contact pin 4 output.
Particularly, in the utility model embodiment, the Switching Power Supply primary module 1, the Switching Power Supply spare module 2 that are arranged on circuit main board 8 all can adopt conventional inverse-excitation type small-power electric power electronic switch power, Switching Power Supply primary module 1, Switching Power Supply spare module 2 can be the direct current of 5V and/or 24V by the voltage transitions of input, Switching Power Supply primary module 1, Switching Power Supply spare module 2 are again by the corresponding magnitude of voltage of bottom contact pin 4 output on circuit main board 8, so that corresponding working power to be provided.During normal operation, by the 1 work power supply of Switching Power Supply primary module, when the magnitude of voltage of Switching Power Supply primary module 1 output is when monitoring the magnitude of voltage that handover module 3 is set, monitor the output of handover module 3 stopcock power supply primary modules 1, and starting switch power backup block 2, by the Switching Power Supply spare module 2 corresponding 5V of output and/or 24V voltages, by Switching Power Supply spare module 2, guarantee to provide continuity and the reliability of power supply.Base plate contact pin 4 is responsible for the output of Switching Power Supply primary module 1 or switching voltage spare module 2 to be connected to motherboard bus, for other plug-in units provide power supply.
In the utility model embodiment, base plate contact pin 4 is positioned at the end, one end of circuit main board 8, and the other end of circuit main board 8 arranges terminals of connecting wire 6, by terminals of connecting wire 6, is connected with the voltage of outside 220V.Particularly, described binding post 6 is electrically connected to the input of Switching Power Supply primary module 1 and the input of Switching Power Supply spare module 2, and the input of Switching Power Supply primary module 1 and Switching Power Supply spare module 2 are electrically connected to outside input power by binding post 6.Switching Power Supply primary module 1, Switching Power Supply spare module 2 obtain 5V, 24V voltage by the voltage transitions of external power source input.
One end of described circuit main board 8 arranges back side baffle plate 7.Described back side baffle plate 7 and terminals of connecting wire 6 are positioned at same one end of circuit main board 8, and back side baffle plate 7 is provided with some hold-down screws 5, by hold-down screw 5, can easily circuit main board 8 be fixedly installed on cabinet.Further, in the utility model embodiment, when monitoring handover module 3 stopcock power supply primary module 1 output voltages, by terminals of connecting wire 6 to outside output alarm information, by the damage of described alarm message reminding Switching Power Supply primary module 1.
As shown in Figure 2: described supervision handover module 3 comprises the first operational amplifier A, the in-phase end of described the first operational amplifier A is connected with one end of one end of the first resistance R 1, one end of the second resistance R 2 and the 3rd resistance R 3, the other end of the first resistance R 1 is connected with voltage U i, the other end ground connection of the second resistance R 2, the other end of the 3rd resistance R 3 is connected with the anode tap of the first diode D1, the cathode terminal of the first diode D1 is connected with the output of the first operational amplifier A and one end of the 4th resistance R 4, and the other end of the 4th resistance R 4 is connected with voltage VCC; The output of the first operational amplifier A is connected with the control end of Switching Power Supply primary module 1 and the end of oppisite phase of the second operational amplifier B; The end of oppisite phase of the first operational amplifier A is connected with one end of voltage U R and the 5th resistance R 5;
The other end of the 5th resistance R 5 is connected with the in-phase end of the second operational amplifier B and one end of the 6th resistance R 6, the other end of the 6th resistance R 6 is connected with the anode tap of the second diode D2, the cathode terminal of the second diode D2 is connected with the output of the second operational amplifier B and one end of the 7th resistance R 7, the other end of the 7th resistance R 7 is connected with voltage VCC, and the output of the second operational amplifier B is connected with the control end of Switching Power Supply spare module 2.
Particularly, described the first operational amplifier A and the second operational amplifier B all adopt LM393.Voltage U i is the magnitude of voltage of Switching Power Supply primary module 1 output, and voltage U R is the output reference voltage of the first operational amplifier A and the second operational amplifier B.One power end of the first operational amplifier A is connected with voltage VCC, other end voltage end ground connection, the output of the first operational amplifier A is connected with the control end of Switching Power Supply primary module 1, and the output of the second operational amplifier B is connected with the control end of Switching Power Supply spare module 2.
Monitor that handover module 3 monitors output 24V, the 5V of Switching Power Supply primary module 1, when 24V drops to 22.8 or 5V while dropping to 4.75V, the output of the output lockout switch power supply primary module 1 by the first operational amplifier A, by the second operational amplifier B opening switch power backup block 2, guarantee this Switching Power Supply plug-in unit energy continued power simultaneously.
Modular Switching Power Supply primary module 1 and Switching Power Supply spare module 2 are set on the utility model circuit main board 8; installation and maintenance are convenient; monitor that handover module 3 monitors and the magnitude of voltage of monitoring switch power supply primary module 1 output; when the output voltage fault of Switching Power Supply primary module 1; monitor the output of handover module 3 stopcock power supply primary modules 1; and starting switch power backup block 2; to export required magnitude of voltage by Switching Power Supply spare module 2; guarantee Microcomputer Protection reliability of operation; simple and compact for structure, use cost is low.

Claims (8)

1. a novel Microcomputer Protection Switching Power Supply plug-in unit, it is characterized in that: comprise circuit main board (8), described circuit main board (8) is provided with for alternating current being converted to Switching Power Supply primary module (1) and the Switching Power Supply spare module (2) of required direct current output, the output of the output of described Switching Power Supply primary module (1) and Switching Power Supply spare module (2) is electrically connected to base plate contact pin (4), on circuit main board (8), also arrange and monitor handover module (3), described supervision handover module (3) is electrically connected to Switching Power Supply primary module (1) and Switching Power Supply spare module (2), when the voltage of Switching Power Supply primary module (1) output is when monitoring the magnitude of voltage that handover module (3) is set, monitor the output voltage of handover module (3) closing switch power supply primary module (1), and starting switch power backup block (2), so that Switching Power Supply spare module (2) is exported required magnitude of voltage by base plate contact pin (4).
2. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 1; it is characterized in that: described circuit main board (8) is provided with binding post (6); described binding post (6) is electrically connected to the input of Switching Power Supply primary module (1) and the input of Switching Power Supply spare module (2), and the input of Switching Power Supply primary module (1) and Switching Power Supply spare module (2) are electrically connected to outside input power by binding post (6).
3. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 1, is characterized in that: one end of described circuit main board (8) arranges back side baffle plate (7).
4. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 1, it is characterized in that: described supervision handover module (3) comprises the first operational amplifier (A), one end of the in-phase end of described the first operational amplifier (A) and the first resistance (R1), one end of one end of the second resistance (R2) and the 3rd resistance (R3) connects, the other end of the first resistance (R1) is connected with voltage U i, the other end ground connection of the second resistance (R2), the other end of the 3rd resistance (R3) is connected with the anode tap of the first diode (D1), the cathode terminal of the first diode (D1) is connected with the output of the first operational amplifier (A) and one end of the 4th resistance (R4), the other end of the 4th resistance (R4) is connected with voltage VCC, the output of the first operational amplifier (A) is connected with the control end of Switching Power Supply primary module (1) and the end of oppisite phase of the second operational amplifier (B), the end of oppisite phase of the first operational amplifier (A) is connected with one end of voltage U R and the 5th resistance (R5),
The other end of the 5th resistance (R5) is connected with the in-phase end of the second operational amplifier (B) and one end of the 6th resistance (R6), the other end of the 6th resistance (R6) is connected with the anode tap of the second diode (D2), the cathode terminal of the second diode (D2) is connected with the output of the second operational amplifier (B) and one end of the 7th resistance (R7), the other end of the 7th resistance (R7) is connected with voltage VCC, and the output of the second operational amplifier (B) is connected with the control end of Switching Power Supply spare module (2).
5. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 4, is characterized in that: described the first operational amplifier (A) and the second operational amplifier (B) all adopt LM393.
6. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 3, is characterized in that: described back side baffle plate (7) is provided with some hold-down screws (5).
7. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 1, is characterized in that: described Switching Power Supply primary module (1), Switching Power Supply spare module (2) are all exported 5V and 24V voltage.
8. novel Microcomputer Protection Switching Power Supply plug-in unit according to claim 1, is characterized in that: during the output voltage of described supervision handover module (3) stopcock power supply primary module (1), and output alarm information.
CN201320520791.1U 2013-08-23 2013-08-23 Novel power plug-in unit for microcomputer protection switch Expired - Lifetime CN203445685U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320520791.1U CN203445685U (en) 2013-08-23 2013-08-23 Novel power plug-in unit for microcomputer protection switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320520791.1U CN203445685U (en) 2013-08-23 2013-08-23 Novel power plug-in unit for microcomputer protection switch

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Publication Number Publication Date
CN203445685U true CN203445685U (en) 2014-02-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103427482A (en) * 2013-08-23 2013-12-04 国家电网公司 Novel microcomputer protection switching power supply plug-in device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103427482A (en) * 2013-08-23 2013-12-04 国家电网公司 Novel microcomputer protection switching power supply plug-in device

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Granted publication date: 20140219

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