CN111181243A - Power supply system - Google Patents

Power supply system Download PDF

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Publication number
CN111181243A
CN111181243A CN202010125162.3A CN202010125162A CN111181243A CN 111181243 A CN111181243 A CN 111181243A CN 202010125162 A CN202010125162 A CN 202010125162A CN 111181243 A CN111181243 A CN 111181243A
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CN
China
Prior art keywords
power supply
control device
voltage
local
circuit
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Pending
Application number
CN202010125162.3A
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Chinese (zh)
Inventor
刘斌
曾小春
孔繁平
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Individual
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Individual
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Priority to CN202010125162.3A priority Critical patent/CN111181243A/en
Publication of CN111181243A publication Critical patent/CN111181243A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • 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
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application discloses a power supply system, which is applied to a safety precaution system, a storage battery is arranged to continuously supply power to safety precaution equipment under the condition of local power failure, the stable operation of the safety precaution equipment is ensured, the reliability is improved, meanwhile, a central control device is arranged and is connected with a measurement and control device in each power supply device through a communication line, the measurement and control device is connected with a control device, so that a control signal of the central control device can control the control device to execute corresponding action through the measurement and control device to control the power supply state of a power supply circuit, in addition, a detection circuit can feed back a voltage signal and a current signal of a power receiving device to a display device, so that a user can remotely observe the power supply condition of the power receiving device in a central control room, once the power receiving device cannot operate, whether the power supply system of the power receiving device has a failure or the self failure of the power receiving device can be judged, so as to make a corresponding maintenance scheme in time.

Description

Power supply system
Technical Field
The invention relates to the field of intelligent power supplies, in particular to a power supply system.
Background
The intelligent power supply system for the safety protection system is a working power supply applied to an electronic protection system in the safety protection system, and can also be applied to an electromechanical equipment control system in an intelligent building as a working power supply of detection, monitoring and control equipment.
The power supply of the current safety precaution system adopts a centralized power supply mode and a local power supply mode.
The centralized power supply mode is that a central control room provides a working power supply for the powered device in a cable transmission mode; the local power supply mode provides working power to the equipment at the nearby position of the equipment through the power distribution system by the building.
The existing centralized power supply mode has the following technical defects: the cable cost is high, and a special cable needs to be laid in the construction stage of the safety precaution system, so that the material cost and the construction cost are brought. There is also a subsequent cost of re-laying the cable after it ages. Transmission efficiency is low, and because the teletransmission electric energy is needed, the resistance of wire can consume the electric energy, leads to transmission efficiency to reduce, especially when transmitting safe voltage, because the loss of electric current increase meeting greatly increased circuit. The equipment power supply is unstable, and the transmission line is long, so that the equipment is easily damaged to cause power transmission interruption. The power receiving state of the equipment cannot be sensed, and due to the fact that a transmission line is long and no measurement and communication path exists, the power transmitting end cannot timely acquire the power state of the power receiving end and relevant parameters such as voltage, current and ripple coefficients of a power supply, and the function of remotely starting and stopping the power supply cannot be achieved.
The existing local power supply mode has the following problems: centralized control is not available, and it is difficult to achieve the same control management due to distribution of the distribution boxes at various locations of the building. Due to the absence of a communication link, the central control room cannot timely grasp the operating states and related parameters of each power supply. Because the power that each block terminal provided probably takes the different phase line of different powers, produce that the system power is asynchronous, power disturbance such as big. The power supply state and related parameters of the power supply cannot be sensed. Because factors such as local power supply system installation condition, environmental ventilation influence, can't install the uninterrupted power system of standard usually, consequently, be difficult to guarantee the security of the whole power of safety precaution system, especially the requirement of safety precaution system back-up source operating time under the outage condition.
For this reason, there is a need for a power supply system capable of remote monitoring to improve maintenance efficiency while ensuring system reliability.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a power supply system capable of remotely monitoring a power supply system that improves maintenance efficiency and simultaneously ensures system reliability. The specific scheme is as follows:
a power supply system applied to a safety protection system comprises: the system comprises a central control room power supply device, a local low-voltage alternating current power supply device, a local low-voltage direct current power supply device, central control equipment and display equipment;
the central control equipment and the display equipment are respectively in communication connection with the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device through communication lines;
the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device are respectively connected with a local power supply and used for supplying power to local powered equipment;
the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device respectively comprise a power supply circuit, a control device, a storage battery, a detection circuit and a measurement and control device; the power supply circuit is respectively connected with the control device, the storage battery and the detection circuit, the measurement and control device is connected with the control device, and the measurement and control device is connected with the central control equipment through a communication line;
the control device is used for controlling whether the power supply circuit supplies power to the powered device or not according to a second control signal of the measurement and control device;
the detection circuit is used for detecting a voltage signal and a current signal which are output to powered equipment by the power supply circuit and sending the voltage signal and the current signal to the measurement and control device;
the measurement and control device is used for sending the voltage signal and the current signal to the display equipment, receiving a first control signal sent by the central control equipment, and generating and sending a second control signal to the control device according to the first control signal;
the storage battery is used for supplying power to the power receiving equipment through the power supply circuit;
the central control equipment is used for receiving a control instruction, generating the first control signal according to the control instruction and sending the first control signal to the measurement and control device;
and the display equipment is used for receiving and displaying the voltage signal and the current signal.
Optionally, the system further includes a local server connected to the measurement and control device and the central control device, respectively, and configured to store data.
Optionally, the system further comprises a wide area server and a wide area display device which are arranged at a remote end and connected with the local server;
the wide area server is used for receiving and storing the data of the local server;
and the wide area display equipment is used for displaying the data of the local server.
Optionally, the central control room power supply device, the local low-voltage ac power supply device, and the local low-voltage dc power supply device further include charging devices respectively connected to the power supply circuit and the storage battery;
and the charging device is used for charging the storage battery by utilizing the power supply circuit.
Optionally, the central control room power supply device includes a distribution box and an ac power supply unit; the alternating current power supply unit comprises the power supply circuit, the control device, the charging device, the storage battery, the detection circuit and the measurement and control device;
the power supply circuit comprises a transformer, a rectifier and an inverter which are connected in sequence;
the distribution box is connected with a local power supply, the transformer is connected with the power output end of the distribution box, the output end of the inverter is connected with the powered device to serve as the output end of the power supply circuit, the storage battery is connected with the input end of the inverter, the input end of the charging device is connected with the rectifier, and the output end of the charging device is connected with the storage battery.
Optionally, the local low-voltage ac power supply device includes a distribution box and a low-voltage ac unit; the low-voltage alternating current unit comprises the power supply circuit, the control device, the charging device, the storage battery, the detection circuit and the measurement and control device;
the power supply circuit comprises a transformer, a rectifier and an inverter which are connected in sequence;
the distribution box is connected with a local power supply, the transformer is connected with the power output end of the distribution box, the output end of the inverter is connected with the powered device to serve as the output end of the power supply circuit, the storage battery is connected with the input end of the inverter, the input end of the charging device is connected with the rectifier, and the output end of the charging device is connected with the storage battery.
Optionally, the local low-voltage dc power supply device includes a distribution box and a low-voltage dc unit; the low-voltage alternating current unit comprises the power supply circuit, the control device, the charging device, the storage battery, the detection circuit and the measurement and control device;
the power supply circuit comprises a transformer, a rectifier and a switcher which are connected in sequence;
the block terminal is connected with local power supply, the transformer with the power output end of block terminal is connected, the output of switch with the powered device connects as supply circuit's output, the first input of switch with the rectifier is connected, the second input of switch with the battery is connected, charging device's input with the rectifier is connected, charging device's output with the battery is connected.
Optionally, the control device includes a main switch and a circuit breaker corresponding to the powered device; the detection circuit comprises a current detection circuit and a voltage detection circuit;
the main switch is connected between the transformer and the power output end of the distribution box, the output end of the power supply circuit is connected with each circuit breaker, the current detection circuit is connected between each circuit breaker and the corresponding powered device, and the voltage detection circuit is respectively connected with the charging device, the storage battery and the output end of each circuit breaker;
the current detection circuit is used for detecting a current signal of each circuit of powered equipment;
the voltage detection circuit is used for detecting a voltage signal of each circuit of powered equipment.
Optionally, the power supply circuit outputs a safe voltage.
In the present invention, a power supply system is applied to a security system, and includes: the system comprises a central control room power supply device, a local low-voltage alternating current power supply device, a local low-voltage direct current power supply device, central control equipment and display equipment; the central control equipment and the display equipment are respectively in communication connection with the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device through communication lines; the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device are respectively connected with a local power supply and used for supplying power to local powered equipment; the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device respectively comprise a power supply circuit, a control device, a storage battery, a detection circuit and a measurement and control device; the power supply circuit is respectively connected with the control device, the storage battery and the detection circuit, the measurement and control device is connected with the control device, and the measurement and control device is connected with the central control equipment through a communication line; the control device is used for controlling whether the power supply circuit supplies power to the powered equipment or not according to a second control signal of the measurement and control device; the detection circuit is used for detecting a voltage signal and a current signal which are output to the powered equipment by the power supply circuit and sending the voltage signal and the current signal to the measurement and control device; the measurement and control device is used for sending a voltage signal and a current signal to the display equipment, receiving a first control signal sent by the central control equipment, and generating and sending a second control signal to the control device according to the first control signal; a storage battery for supplying power to the power receiving apparatus through the power supply circuit; the central control equipment is used for receiving the control instruction, generating a first control signal according to the control instruction and sending the first control signal to the measurement and control device; and the display device is used for receiving the voltage signal and the current signal and displaying.
The invention sets the storage battery to continue to supply power to the safety protection equipment under the condition of local power failure, ensures the stable operation of the safety protection equipment, improves the reliability of the system, simultaneously sets the central control equipment and connects the central control equipment with the central control room power supply device, the local low-voltage alternating current power supply device and the measurement and control device in the local low-voltage direct current power supply device through the communication lines, the measurement and control device is connected with the control device, so that the control signal of the central control equipment can control the power supply state of the power supply circuit through the measurement and control device to execute corresponding action to determine which power receiving equipment can continue to work, in addition, the detection circuit can feed back the voltage signal and the current signal of the power receiving equipment to the display equipment, so that a user can remotely observe the power supply condition of the power receiving equipment in the central control room, once the power receiving equipment cannot work, the method can judge whether the power receiving equipment has a fault in a power supply system or the power receiving equipment according to the voltage signal and the current signal of the power receiving equipment, so that a corresponding maintenance scheme can be formulated in time, and the maintenance efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply device according to an embodiment of the disclosure;
FIG. 3 is a schematic structural diagram of another power supply system disclosed in the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another power supply apparatus according to an embodiment of the disclosure;
FIG. 5 is a schematic diagram of an AC power unit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a low voltage AC unit according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a low-voltage dc unit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a power supply system, which is shown in figure 1 and is applied to a safety protection system, and the system comprises: the system comprises a central control room power supply device 1, a local low-voltage alternating current power supply device 2, a local low-voltage direct current power supply device 3, a central control device 4 and a display device 5;
the central control equipment 4 and the display equipment 5 are respectively in communication connection with the central control room power supply device 1, the local low-voltage alternating current power supply device 2 and the local low-voltage direct current power supply device 3 through communication lines;
the central control room power supply device 1, the local low-voltage alternating current power supply device 2 and the local low-voltage direct current power supply device 3 are respectively connected with a local power supply and used for supplying power to local powered equipment;
referring to fig. 2, the central control room power supply device 1, the local low-voltage ac power supply device 2, and the local low-voltage dc power supply device 3 each include a power supply circuit 91, a control device 92, a storage battery 93, a detection circuit 94, and a measurement and control device 95; the power supply circuit 91 is respectively connected with the control device 92, the storage battery 93 and the detection circuit 94, the measurement and control device 95 is connected with the control device 92, and the measurement and control device 95 is connected with the central control equipment 4 through a communication line;
the control device 92 is configured to control whether the power supply circuit 91 supplies power to the powered device according to a second control signal of the measurement and control device 95;
a detection circuit 94, configured to detect a voltage signal and a current signal output to the powered device by the power supply circuit 91, and send the voltage signal and the current signal to the measurement and control device 95;
the measurement and control device 95 is configured to send a voltage signal and a current signal to the display device 5, receive a first control signal sent by the central control device 4, and generate and send a second control signal to the control device 92 according to the first control signal;
a battery 93 for supplying power to the power receiving apparatus through the power supply circuit 91;
the central control device 4 is configured to receive the control instruction, generate a first control signal according to the control instruction, and send the first control signal to the measurement and control device 95;
and the display device 5 is used for receiving the voltage signal and the current signal and displaying.
Specifically, the central control device 4 in the central control room is communicatively connected to the central control room power supply apparatus 1, the local low-voltage ac power supply apparatus 2, and the local low-voltage dc power supply apparatus 3, the central control device 4 allows a user to operate the central control room power supply apparatus 4, the remote control center control room power supply apparatus 1, the local low-voltage ac power supply apparatus 2, and the control apparatus 92 of the local low-voltage dc power supply apparatus 3, control the power supply state of the power supply circuit 91, and can determine whether to supply power to those powered devices, and connect to the power supply, and the central control device 4 can be communicatively connected to the measurement and control apparatus 95 in the central control room power supply apparatus 1, the local low-voltage ac power supply apparatus 2, and the local low-voltage dc power supply apparatus 3 through a communication line such as a cable, a network, or a communication bus, and the measurement and control apparatus 95 can generate a corresponding second control signal according to the first control signal sent by the, and the power supply condition of the power supply circuit 91 is controlled to complete remote control.
It is understood that the measurement and control device 95 includes a corresponding interface to communicatively connect with the central control device 4 and other connected devices, such as a network interface.
Specifically, the display device 5 is capable of receiving the voltage signal and the current signal that are detected by the detection circuit 94 and output by the power supply circuit 91 to the powered device, and displaying the signals to the user, so that the user can remotely monitor the power supply condition of each powered device in the central control room.
The powered device may include a camera, an access lock, and other electronic devices for security.
Furthermore, the storage battery 93 can continue to supply power to the safety precaution device through the power supply circuit 91 when the power supply of the local power supply fails, so that the safety precaution device can continue to operate even if no local power supply is supplied within a certain time, maintenance time is reserved for maintenance personnel to maintain the local power supply, and the reliability of a power supply system is improved.
The capacity of the battery 93 may try to ensure that the safety and protection device continues to operate for 48 hours, and for this reason, the battery 93 needs to satisfy two conditions, i.e., the battery voltage (V) multiplied by the rated operating current (a) multiplied by the rated power supply time (h) is greater than or equal to the power supply voltage (V) multiplied by the design load current (a) multiplied by the design operating time (h), or the battery voltage (V) multiplied by the rated capacity (Ah) is greater than or equal to the power supply voltage (V) multiplied by the design load current (a) multiplied by the design operating time (h).
The local power supply can be a power supply line led out through a local power supply system.
It can be seen that, in the embodiment of the present invention, the storage battery 93 is configured to continuously supply power to the safety protection device in case of a local power failure, thereby ensuring stable operation of the safety protection device, and improving reliability of the system, meanwhile, the central control device 4 is configured, and the central control device 4 is connected to the central control room power supply device 1, the local low-voltage ac power supply device 2, and the measurement and control device 95 in the local low-voltage dc power supply device 3 through the communication lines, and the measurement and control device 95 is further connected to the control device 92, so that the control signal of the central control device 4 can control the control device 92 to execute corresponding actions to control the power supply state of the power supply circuit 91 through the measurement and control device 95, and determine which powered devices can continue to operate, and in addition, the detection circuit 94 can feed back the voltage signal and the current signal of the powered device to the display device 5, so that a user can, once the powered device can not operate, whether the power supply system or the powered device breaks down or not can be judged according to the voltage signal and the current signal of the powered device, so that a corresponding maintenance scheme can be made in time, and the maintenance efficiency is improved.
It can be understood that, in order to analyze and preserve the operation status of the whole power supply system, referring to fig. 3, a local server 6 is provided, which is connected to the measurement and control device 95 and the central control device 4, and is used for storing data, the local server 6 is provided in the central control room C, and can store the voltage signal and the current signal of each powered device 9, and also record the first control signal sent by the central control device 4, so as to facilitate the response when analyzing a fault later, and provide maintenance data when a fault occurs.
Specifically, usually, one central control room C is responsible for security devices in one area, i.e. the security area a, in order to manage security devices in a wider range, a wide area server 7 and a wide area display device 8 connected to the local server 6 may be installed in a remote control room R at a far end, as shown in fig. 3;
a wide area server 7 for receiving and storing data of the local server 6;
and the wide area display device 8 is used for displaying the data of the local server 6.
It can be understood that the wide area server 7 and the wide area display device 8 can be connected to a plurality of local servers 6, and store or display data of the plurality of local servers 6 at the same time, so as to implement remote monitoring of the wide area, at this time, a user can contact with the user of the central control room C according to the data displayed by the wide area display device 8, so as to implement remote management, and can perform big data analysis by using the data of the plurality of local servers 6 in the wide area server 7, so as to obtain a required analysis result.
Further, referring to fig. 4, the central control room power supply device, the local low voltage ac power supply device and the local low voltage dc power supply device may each further include a charging device 96 respectively connected to the power supply circuit 91 and the storage battery 93;
and a charging device 96 for charging the battery 93 with the power supply circuit 91.
Specifically, when the power supply circuit 91 operates normally, the power is supplied to the storage battery 93 through the charging device 96, so that the storage battery 93 is full of electric quantity, and the storage battery 93 can supply power for the longest time under the condition of local power failure.
The embodiment of the invention discloses a specific power supply system, and compared with the previous embodiment, the embodiment further explains and optimizes the technical scheme. Specifically, the method comprises the following steps:
specifically, referring to fig. 3 and 5, the central control room power supply device 1 may include a distribution box 11 and an ac power supply unit 12; the ac power supply unit 12 includes a power supply circuit 91, a control device 92, a charging device 96, a storage battery 93, a detection circuit 94, and a measurement and control device 95;
the power supply circuit 91 comprises a transformer 911, a rectifier 912 and an inverter 913 which are connected in sequence;
the distribution box 11 is connected to a local power source 900, the transformer 911 is connected to a power output terminal 901 of the distribution box 11, an output terminal of the inverter 913 is connected to the powered device 9 as an output terminal of the power supply circuit 91, the storage battery 93 is connected to an input terminal of the inverter 913, an input terminal of the charging device 96 is connected to the rectifier 912, and an output terminal of the charging device 96 is connected to the storage battery 93.
Since the battery 93 requires dc power when charging, ac power needs to be converted into dc power by the rectifier 912 and output to the charging device 96, the charging device 96 charges the battery 93 with dc power, and the output terminal of the battery 93 is connected to the input terminal of the inverter device 913, and since the power receiving device 9 uses ac power, the inverter device 913 needs to convert the dc power output from the rectifier 912 and the battery 93 into ac power and output the ac power to the power receiving device 9.
Specifically, referring to fig. 3 and 6, the local low-voltage ac power supply unit 2 is similar to the central control room power supply unit 1, and includes a distribution box 21 and a low-voltage ac unit 22; the low-voltage alternating current unit 22 comprises a power supply circuit 91, a control device 92, a charging device 96, a storage battery 93, a detection circuit 94 and a measurement and control device 95;
the power supply circuit 91 comprises a transformer 911, a rectifier 912 and an inverter 913 which are connected in sequence;
the distribution box 21 is connected to a local power source 900, the transformer 911 is connected to a power output terminal 901 of the distribution box 21, an output terminal of the inverter 913 is connected to the powered device 9 as an output terminal of the power supply circuit 91, the storage battery 93 is connected to an input terminal of the inverter 913, an input terminal of the charging device 96 is connected to the rectifier 912, and an output terminal of the charging device 96 is connected to the storage battery 93.
Specifically, referring to fig. 3 and 7, the local low-voltage dc power supply apparatus 3 may include a distribution box 31 and a low-voltage dc unit 32; the low-voltage alternating current unit 22 comprises a power supply circuit 91, a control device 92, a charging device 96, a storage battery 93, a detection circuit 94 and a measurement and control device 95;
the power supply circuit 91 includes a transformer 911, a rectifier 912, and a switch 913 connected in sequence;
the distribution box 31 is connected to the local power source 900, the transformer 911 is connected to the power output terminal 901 of the distribution box 31, the output terminal of the switch 913 is connected to the powered device 9 as the output terminal of the power supply circuit 91, the first input terminal of the switch 913 is connected to the rectifier 912, the second input terminal of the switch 913 is connected to the storage battery 93, the input terminal of the charging device 96 is connected to the rectifier 912, and the output terminal of the charging device 96 is connected to the storage battery 93.
Specifically, since the powered device 9 faced by the local low-voltage dc power supply device 3 also uses dc power, the inverter device 913 does not need to be provided, and since the inverter device 913 has a function of selecting from a power supply line, the switch 913 is provided to select whether the local power source 900 supplies power or the storage battery 93 supplies power, and when the local power source 900 fails, the switch 913 can switch to the storage battery 93 to supply power, so as to ensure that the powered device 9 continues to operate.
Further, as shown in fig. 5 to 7, the control device 92 may include a main switch 921 and a circuit breaker 922 corresponding to the powered device 9; the detection circuit 94 includes a current detection circuit 941 and a voltage detection circuit 942;
the main switch 921 is connected between the transformer 911 and the power output terminal 901 of the distribution box (11, 21, 31), the output terminal of the power supply circuit 91 is connected to the breaker 922 of each path, the current detection circuit 941 is connected between the breaker 922 of each path and the corresponding powered device 9, and the voltage detection circuit 942 is connected to the output terminals of the charging device 96, the storage battery 93, and the breaker 922 of each path, respectively;
a current detection circuit 941 for detecting a current signal of each circuit of the powered device 9;
a voltage detection circuit 942 for detecting a voltage signal of each circuit of the power receiving apparatus 9.
Specifically, the main switch 921 can control whether the power supply circuit 91 is connected to the local power supply 900 system, if the local power supply 900 fails, the main switch 921 needs to be disconnected during maintenance, and after the maintenance is completed, the main switch 921 can be closed to continue to use the local power supply 900 for power supply; the breakers 922 correspond to each powered device 9, and each breaker 922 controls the power supply of each powered device 9, so that the control of an individual powered device 9 can be realized,
specifically, in order to ensure that the user safety power supply circuit 91 outputs a safe voltage, safety accidents caused by electric leakage are avoided.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The technical content provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the above description of the examples is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (9)

1. A power supply system, applied to a security system, comprising: the system comprises a central control room power supply device, a local low-voltage alternating current power supply device, a local low-voltage direct current power supply device, central control equipment and display equipment;
the central control equipment and the display equipment are respectively in communication connection with the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device through communication lines;
the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device are respectively connected with a local power supply and used for supplying power to local powered equipment;
the central control room power supply device, the local low-voltage alternating current power supply device and the local low-voltage direct current power supply device respectively comprise a power supply circuit, a control device, a storage battery, a detection circuit and a measurement and control device; the power supply circuit is respectively connected with the control device, the storage battery and the detection circuit, the measurement and control device is connected with the control device, and the measurement and control device is connected with the central control equipment through a communication line;
the control device is used for controlling whether the power supply circuit supplies power to the powered device or not according to a second control signal of the measurement and control device;
the detection circuit is used for detecting a voltage signal and a current signal which are output to powered equipment by the power supply circuit and sending the voltage signal and the current signal to the measurement and control device;
the measurement and control device is used for sending the voltage signal and the current signal to the display equipment, receiving a first control signal sent by the central control equipment, and generating and sending a second control signal to the control device according to the first control signal;
the storage battery is used for supplying power to the power receiving equipment through the power supply circuit;
the central control equipment is used for receiving a control instruction, generating the first control signal according to the control instruction and sending the first control signal to the measurement and control device;
and the display equipment is used for receiving and displaying the voltage signal and the current signal.
2. The power supply system according to claim 1, further comprising a local server connected to the measurement and control device and the central control device, respectively, for storing data.
3. The power supply system of claim 2, further comprising a wide area server and a wide area display device disposed remotely and connected to the local server;
the wide area server is used for receiving and storing the data of the local server;
and the wide area display equipment is used for displaying the data of the local server.
4. The power supply system of claim 1 wherein said central control room power supply means, said local low voltage ac power supply means and said local low voltage dc power supply means each further comprise charging means connected to said power supply circuit and said storage battery, respectively;
and the charging device is used for charging the storage battery by utilizing the power supply circuit.
5. The power supply system of claim 4, wherein the central control room power supply includes a distribution box and an AC power unit; the alternating current power supply unit comprises the power supply circuit, the control device, the charging device, the storage battery, the detection circuit and the measurement and control device;
the power supply circuit comprises a transformer, a rectifier and an inverter which are connected in sequence;
the distribution box is connected with a local power supply, the transformer is connected with the power output end of the distribution box, the output end of the inverter is connected with the powered device to serve as the output end of the power supply circuit, the storage battery is connected with the input end of the inverter, the input end of the charging device is connected with the rectifier, and the output end of the charging device is connected with the storage battery.
6. The power supply system of claim 4, wherein said local low voltage ac power supply means comprises a distribution box and a low voltage ac unit; the low-voltage alternating current unit comprises the power supply circuit, the control device, the charging device, the storage battery, the detection circuit and the measurement and control device;
the power supply circuit comprises a transformer, a rectifier and an inverter which are connected in sequence;
the distribution box is connected with a local power supply, the transformer is connected with the power output end of the distribution box, the output end of the inverter is connected with the powered device to serve as the output end of the power supply circuit, the storage battery is connected with the input end of the inverter, the input end of the charging device is connected with the rectifier, and the output end of the charging device is connected with the storage battery.
7. The power supply system of claim 6, wherein said local low voltage DC power supply includes a switchbox and a low voltage DC unit; the low-voltage alternating current unit comprises the power supply circuit, the control device, the charging device, the storage battery, the detection circuit and the measurement and control device;
the power supply circuit comprises a transformer, a rectifier and a switcher which are connected in sequence;
the block terminal is connected with local power supply, the transformer with the power output end of block terminal is connected, the output of switch with the powered device connects as supply circuit's output, the first input of switch with the rectifier is connected, the second input of switch with the battery is connected, charging device's input with the rectifier is connected, charging device's output with the battery is connected.
8. The power supply system according to any one of claims 4 to 7, wherein the control device includes a main switch and a circuit breaker corresponding to a powered device; the detection circuit comprises a current detection circuit and a voltage detection circuit;
the main switch is connected between the transformer and the power output end of the distribution box, the output end of the power supply circuit is connected with each circuit breaker, the current detection circuit is connected between each circuit breaker and the corresponding powered device, and the voltage detection circuit is respectively connected with the charging device, the storage battery and the output end of each circuit breaker;
the current detection circuit is used for detecting a current signal of each circuit of powered equipment;
the voltage detection circuit is used for detecting a voltage signal of each circuit of powered equipment.
9. The power supply system of claim 8, wherein the power supply circuit outputs a safe voltage.
CN202010125162.3A 2020-02-27 2020-02-27 Power supply system Pending CN111181243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010125162.3A CN111181243A (en) 2020-02-27 2020-02-27 Power supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010125162.3A CN111181243A (en) 2020-02-27 2020-02-27 Power supply system

Publications (1)

Publication Number Publication Date
CN111181243A true CN111181243A (en) 2020-05-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010125162.3A Pending CN111181243A (en) 2020-02-27 2020-02-27 Power supply system

Country Status (1)

Country Link
CN (1) CN111181243A (en)

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