CN211958865U - Direct current power supply network monitoring management system - Google Patents

Direct current power supply network monitoring management system Download PDF

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Publication number
CN211958865U
CN211958865U CN202020626773.1U CN202020626773U CN211958865U CN 211958865 U CN211958865 U CN 211958865U CN 202020626773 U CN202020626773 U CN 202020626773U CN 211958865 U CN211958865 U CN 211958865U
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Prior art keywords
monitoring
battery
power supply
direct current
module
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CN202020626773.1U
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王海霞
贾永胜
刘向科
刘科松
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Zhengzhou Zhengxing Electric Co ltd
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Zhengzhou Zhengxing Electric Co ltd
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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
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The utility model discloses a direct current power supply network monitoring management system, including on-the-spot direct current power supply module, on-the-spot monitoring protection module and network monitoring management module, on-the-spot direct current power supply module includes commercial power direct current conversion unit and battery cell, and on-the-spot monitoring protection module includes battery connection battery protection circuit and battery monitoring circuit, and after battery cell connection battery protection circuit and battery monitoring circuit, the monitoring signal of battery monitoring circuit connects singlechip signal input; the network monitoring management module comprises a front server and a monitoring management center, the signal output end of the single chip microcomputer is connected with the wireless communication module through the communication driving module, monitoring signals are sent to the front server through the wireless communication module, and the monitoring signals are collected and transmitted to the monitoring management center through the front server. The utility model discloses can realize that the dispersion of each direct current equipment information is gathered, unified control, centralized management, become the dispersion and maintain the management and be centralized maintenance management.

Description

Direct current power supply network monitoring management system
Technical Field
The utility model belongs to the technical field of power control management, concretely relates to system through monitoring and protection and network monitoring management local DC power supply.
Background
The application of direct current power supply equipment in various fields is more and more common, and a storage battery pack is used as an important component of the direct current power supply equipment to provide power for various automatic equipment, and particularly, when a power system fails, reliable power guarantee can be provided for safe operation. At present, the direct current power supply equipment configuration and management of a factory are mainly carried out by setting a peripheral circuit for a storage battery to carry out real-time acquisition and management of various parameters, the existing battery applied to the direct current power supply equipment adopts a lithium iron phosphate battery, and the battery provides a new choice for the direct current power supply equipment due to the advantages of environmental protection, long cycle life and large energy ratio and the rapid development of a lithium battery technology. However, the novel floating-charging type lithium iron phosphate battery also brings about great improvement of fault short-circuit current, and even faults and accidents caused by storage battery problems, so whether the health condition of the storage battery can be diagnosed in real time and on line so as to be handled in time is a necessary premise for avoiding the faults and the accidents. At present, no proper direct-current power supply network monitoring system is found for the storage battery and is used for reliably and efficiently monitoring direct-current power supply equipment and a system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a DC power supply network monitoring management system to the defect and the problem that present DC power supply equipment's DC power supply monitoring system still exists to reach the health status of real-time, on-line diagnosis battery so that in time handle.
The utility model provides a scheme that its technical problem adopted is: a direct current power supply network monitoring system comprises an on-site direct current power supply module, an on-site monitoring protection module and a network monitoring management module, wherein the on-site direct current power supply module comprises a commercial power direct current conversion unit and a storage battery unit, and the commercial power direct current conversion unit and the storage battery unit are respectively connected with a load after passing through a static switch; the on-site monitoring protection module comprises a storage battery connecting battery protection circuit and a battery monitoring circuit, wherein after the storage battery is connected with the battery protection circuit and the battery monitoring circuit, a monitoring signal of the battery monitoring circuit is connected with a signal input end of the single chip microcomputer; the network monitoring management module comprises a front server and a monitoring management center, the signal output end of the single chip microcomputer is connected with the wireless communication module through the communication driving module, monitoring signals are sent to the front server through the wireless communication module, and the monitoring signals are collected and transmitted to the monitoring management center through the front server.
In the battery protection circuit and the battery monitoring circuit, a positive electrode of a storage battery is connected with a power supply end of a lithium battery protection chip IC1 through a resistor R1, a negative potential input port of a charger of the lithium battery protection chip is connected with a negative electrode of a load, the positive electrode of the storage battery is connected with a voltage stabilizing chip IC2 after passing through a voltage regulating resistor and an N-channel field effect transistor Q, an output voltage stabilizing power supply is connected to a reset end of a timer chip IC3, and an OUT end of the timer chip is connected with a signal input end of a single.
The lithium battery protection chip IC1 adopts an R5421 series chip, the voltage stabilization chip IC2 adopts an LM7812 series chip, and the timer chip IC3 adopts a timer chip 555.
In addition, a temperature sensor is arranged in a closed area where the battery pack is located and is connected with a signal input end of the single chip microcomputer.
The storage battery unit is formed by connecting a mains supply with a battery pack through a charger, a normally closed terminal of a relay J1 is connected in series with an output line of the charger, a coil of the relay J1 is connected with a control end of the single chip microcomputer through a signal line, and a power supply end of the battery pack is connected with a load after passing through a static switch I.
The commercial power direct current conversion unit is formed by connecting commercial power with a load through a static switch II after the commercial power passes through an isolation transformer and a rectification circuit.
The utility model has the advantages that: the utility model discloses can realize that the dispersion of each direct current equipment information is gathered, unified control, centralized management, become the dispersion and maintain the management and be centralized maintenance management.
Drawings
Fig. 1 is a system block diagram of the dc power supply network monitoring of the present invention.
Fig. 2 is a schematic circuit diagram of the battery protection and monitoring integrated module of the present invention.
Detailed Description
Aiming at the characteristics that the management effect of a system is needed to be performed to improve the management efficiency in the direct current power supply management in the prior art, and aiming at the aspect of system management, the efficiency can be improved by performing hierarchical management on each management level. The system mainly comprises an on-site direct-current power supply module 1, an on-site monitoring protection module 2 and a network monitoring management module 3.
Example 1: as shown in fig. 1, the on-site dc power supply module includes a commercial power dc conversion unit and a battery unit, wherein the battery unit is a battery pack connected to a commercial power via a charger, a normally closed terminal of a relay J1 is connected in series to an output line of the charger, a coil of the relay J1 is connected to a control terminal of a single chip microcomputer via a signal line, the single chip microcomputer employs a 32-bit AT32UC3B0512, and a power supply terminal of the battery pack is connected to a load after passing through a static switch. The commercial power direct current conversion unit is formed by connecting commercial power with a load through a static switch II after the commercial power passes through an isolation transformer and a rectification circuit. In addition, a temperature sensor is arranged in a closed area where the battery pack is located and is connected with a signal input end of the single chip microcomputer. The single chip microcomputer can monitor the power supply state of the mains supply and the power supply state of the direct current power supply through the battery protection monitoring integrated module, and when the mains supply fails, the single chip microcomputer can control the battery protection monitoring integrated module to close the mains supply direct current conversion unit and use the storage battery unit to supply power to each direct current output interface.
The on-site monitoring protection module includes that the battery connects battery protection circuit and battery monitoring circuit (be battery protection control integration module promptly), among battery protection circuit and the battery monitoring circuit, the battery is anodal to be connected the power end of lithium cell protection chip R5421 series chip through resistance R1, the negative pole of load is connected to the charger negative potential input port of lithium cell protection chip, the battery is anodal to connect LM7812 series voltage stabilizing chip behind voltage regulating resistor and N channel field effect transistor Q, output voltage stabilizing power supply is connected to the end that resets of timer chip 555, singlechip signal input part is connected to the OUT end of timer chip 555. The battery protection monitoring integrated module in fig. 2 is a simplified circuit, and can detect and protect the overcharge, overdischarge, discharge overcurrent, short-circuit overcurrent and charge overcurrent states of 3-5 batteries. In addition, a voltage detector, a short-circuit detector, a reference voltage source, an oscillator, a counter, a delay circuit, a logic circuit, and the like may be further added.
The storage battery unit is formed by connecting a storage battery with a battery protection circuit and a battery monitoring circuit, and then connecting a monitoring signal of the battery monitoring circuit with a signal input end of a single chip microcomputer. The network monitoring management module comprises a front server and a monitoring management center, the signal output end of the single chip microcomputer is connected with the wireless communication module through the communication driving module, monitoring signals are sent to the front server through the wireless communication module, and the monitoring signals are collected and transmitted to the monitoring management center through the front server. The wireless network is compatible with various communication modes, the Internet of things communication technology can be adopted, interconnection and intercommunication of application networks are realized, and a data transmission channel between a field terminal and background monitoring is met.
Example 2: on the basis of the embodiment 1, the battery protection circuit and the battery monitoring circuit are additionally provided with a voltage acquisition unit, a current acquisition unit, a temperature acquisition unit and the like, and the terminal voltage of the battery pack, the terminal voltage of each single battery, the total current of the battery pack, the single current of each single battery and the temperature of each battery of the battery pack are acquired according to a control signal of a monitoring management center. The single chip microcomputer carries out adaptive processing on various parameter information of the direct-current power supply collected in real time and alarm information provided by the monitoring management center, judges the working state of the battery, reports a fault signal to operation and maintenance personnel in real time and realizes an intelligent alarm function.
And storing and backing up the collected data such as voltage, current, temperature and the like, receiving a query request of the monitoring management center, and uploading the collected data to the monitoring management center. When the fault diagnosis function is displayed through the monitoring management center, the results of the fault position, the fault reason and the fault characteristics are displayed through the display module in the form of a curve or a table or a sectional view.
Example 3: on the basis of the embodiment 1, a display module is further arranged, and the single chip microcomputer displays various working states of the running direct-current power supply through a direct-current display screen through a battery protection and monitoring integrated module and reflects the wiring state of a direct-current power supply system. The whole monitoring information and data of the monitoring system are displayed in real time through the direct current display screen, and the basic monitoring data can be further transmitted to the monitoring management center through the wireless transmission module, so that the unattended operation and maintenance requirements are met.

Claims (6)

1. A direct current power network monitoring management system comprises an on-site direct current power module, an on-site monitoring protection module and a network monitoring management module, and is characterized in that the on-site direct current power module comprises a commercial power direct current conversion unit and a storage battery unit, wherein the commercial power direct current conversion unit and the storage battery unit are respectively connected with a load after passing through a static switch; the on-site monitoring protection module comprises a storage battery connecting battery protection circuit and a battery monitoring circuit, after the storage battery unit is connected with the storage battery connecting battery protection circuit and the battery monitoring circuit, a monitoring signal of the battery monitoring circuit is connected with a signal input end of the single chip microcomputer; the network monitoring management module comprises a front server and a monitoring management center, the signal output end of the single chip microcomputer is connected with the wireless communication module through the communication driving module, monitoring signals are sent to the front server through the wireless communication module, and the monitoring signals are collected and transmitted to the monitoring management center through the front server.
2. The monitoring and managing system of a DC power supply network of claim 1, wherein in the battery protection circuit and the battery monitoring circuit, the positive pole of the storage battery is connected with the power supply end of a lithium battery protection chip IC1 through a resistor R1, the negative potential input port of the charger of the lithium battery protection chip is connected with the negative pole of the load, the positive pole of the storage battery is connected with a voltage stabilization chip IC2 after passing through a voltage regulation resistor and an N-channel field effect transistor Q, the output voltage stabilization power supply is connected with the reset end of a timer chip IC3, and the OUT end of the timer chip is connected with the signal input end of.
3. The direct-current power supply network monitoring and management system as claimed in claim 1, wherein the lithium battery protection chip IC1 adopts an R5421 series chip, the voltage stabilization chip IC2 adopts an LM7812 series chip, and the timer chip IC3 adopts a timer chip 555.
4. The monitoring and management system of the direct-current power supply network according to claim 1, wherein a temperature sensor is arranged in the closed area where the battery pack is located and is connected with a signal input end of the single chip microcomputer.
5. The monitoring and management system of the DC power supply network of claim 1, wherein the battery unit is a battery pack connected to the battery pack from the commercial power through a charger, a normally closed terminal of a relay J1 is connected in series to an output line of the charger, a coil of the relay J1 is connected to the control terminal of the single chip microcomputer through a signal line, and a power supply terminal of the battery pack is connected to the load after passing through a static switch.
6. The system of claim 1, wherein the dc power supply network monitoring and management system is characterized in that the commercial power dc conversion unit is connected to the load through the static switch ii after commercial power passes through the isolation transformer and the rectification circuit.
CN202020626773.1U 2020-04-23 2020-04-23 Direct current power supply network monitoring management system Active CN211958865U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020626773.1U CN211958865U (en) 2020-04-23 2020-04-23 Direct current power supply network monitoring management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020626773.1U CN211958865U (en) 2020-04-23 2020-04-23 Direct current power supply network monitoring management system

Publications (1)

Publication Number Publication Date
CN211958865U true CN211958865U (en) 2020-11-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020626773.1U Active CN211958865U (en) 2020-04-23 2020-04-23 Direct current power supply network monitoring management system

Country Status (1)

Country Link
CN (1) CN211958865U (en)

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