CN113472067A - Power management system based on big data - Google Patents

Power management system based on big data Download PDF

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Publication number
CN113472067A
CN113472067A CN202110547230.XA CN202110547230A CN113472067A CN 113472067 A CN113472067 A CN 113472067A CN 202110547230 A CN202110547230 A CN 202110547230A CN 113472067 A CN113472067 A CN 113472067A
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CN
China
Prior art keywords
power
electric energy
alarm information
power management
management server
Prior art date
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Pending
Application number
CN202110547230.XA
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Chinese (zh)
Inventor
马万里
张丽霞
王栋
仇碧杰
梁伟伟
曹连彬
王慧卿
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Information and Telecommunication Branch of State Grid Shanxi Electric Power Co Ltd
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Information and Telecommunication Branch of State Grid Shanxi Electric Power Co Ltd
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Application filed by Information and Telecommunication Branch of State Grid Shanxi Electric Power Co Ltd filed Critical Information and Telecommunication Branch of State Grid Shanxi Electric Power Co Ltd
Priority to CN202110547230.XA priority Critical patent/CN113472067A/en
Publication of CN113472067A publication Critical patent/CN113472067A/en
Pending legal-status Critical Current

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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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • 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
    • Y04S40/128—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 involving the use of Internet protocol

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention is suitable for the technical field of power management of a power grid, and provides a power management system based on big data, which comprises: the system comprises a plurality of electric energy management terminals, a power grid monitoring module, a distribution line monitoring module and a communication module; the power consumption of a user is counted through a plurality of electric energy management terminals, a power grid monitoring module monitors the working state of an in-house transformer, and a distribution line monitoring module acquires the power transmission state of a low-voltage distribution line; the communication module is used for connecting the electric energy management terminal and the power grid monitoring module with a power management server on the internet or a local area network in a communication way; thereby realize acquireing big data through a plurality of electric energy management terminals and electric wire netting monitoring module and distribution lines monitoring module, carry out centralized management through power management server, greatly reduced the fault rate of distribution network, the administrator can in time acquire the trouble condition of distribution network and carry out timely restoration, has improved user's power consumption greatly and has experienced.

Description

Power management system based on big data
Technical Field
The invention belongs to the technical field of power grid power management, and particularly relates to a power management system based on big data.
Background
The existing low-voltage distributor of the power grid cannot protect when overload or sudden increase of electrical load occurs, often burns out, causes large-area power failure, and cannot know when phase failure, undervoltage and electric leakage occur in a distribution line; therefore, the existing power grid power management system cannot meet the use requirements of people.
Disclosure of Invention
In view of the defects of the prior art, the present invention aims to provide a power management system based on big data, and aims to solve the problems that the power distribution network is frequently powered off and the user experience is poor due to the fact that the prior art cannot provide a power management system based on big data.
The invention provides a power management system based on big data, which comprises:
the electric energy management terminals are used for counting the electricity consumption of the electric appliances;
the power grid monitoring module is used for monitoring the working state of the household transformer;
the distribution line monitoring module is used for acquiring the power transmission state of the low-voltage distribution line;
and the communication module is used for connecting the electric energy management terminal and the power grid monitoring module with a power management server on the internet or a local area network in a communication way.
Further, the power management terminal includes:
the electric energy metering unit is used for counting the electric energy consumed by the lower-level electric equipment of the electric energy management terminal;
the first communication unit is in wired communication with the communication module; the first communication unit is a power line carrier communication module;
the positioning unit is used for acquiring the position of the electric energy management terminal in real time; the positioning unit is a satellite positioning unit or a base station positioning unit;
the anti-dismounting unit is an electronic lead seal and an electronic lead seal identification unit corresponding to the electric appliance lead seal, and when the electronic lead seal is damaged, the electronic lead seal identification unit is triggered to send out dismounted alarm information;
the first communication unit sends the electric energy, the position of the electric energy management terminal and the disassembled alarm information to the power management server through the communication module;
further, the grid monitoring module includes:
the current detection unit is used for detecting the output current of the household transformer;
the first voltage detection unit is used for detecting the first voltage output by the service transformer;
the frequency detection unit is used for detecting the output frequency of the service transformer;
the load calculation unit is used for calculating the output power of the household transformer according to the output first voltage and the output current;
the working state of the service transformer comprises the following steps: the output power of the service transformer, the output first voltage, the output current and the output frequency.
Further, the distribution line monitoring module is connected at the extreme end of the low voltage distribution line, the distribution line monitoring module comprising:
the open-phase alarm unit is used for detecting the online states of three live wires and zero wires of the low-voltage distribution line and correspondingly sending out open-phase alarm information when any live wire or zero wire is offline;
and the second voltage detection unit is used for respectively detecting second voltages on three live wires of the low-voltage distribution wire based on the zero wire of the low-voltage distribution wire, and correspondingly sending out undervoltage alarm information or overvoltage alarm information when the second voltage of any live wire of the low-voltage distribution wire and the second voltage of the zero wire are not in accordance with the rated voltage range.
The second communication unit is used for sending the phase-missing alarm information or the overvoltage alarm information and the undervoltage alarm information to the power management server; the second communication unit is a GPRS communication module which is in communication connection with the power management server;
the power supplies of the phase-lack alarm unit, the second voltage detection unit and the second communication unit are all acquired from the low-voltage distribution line;
and the storage battery provides uninterrupted emergency power supply for the phase-failure alarm unit, the second voltage detection unit and the second communication unit.
Preferably, when the output power of the service transformer exceeds the rated output power, the power management server controls a standby service transformer to be started, and the standby service transformer and the service transformer are connected in parallel to provide power supply for users.
Further preferably, before the power management server controls the standby service transformer to be started, it is determined whether the phase-missing alarm information or the overvoltage alarm information sent by the distribution line monitoring module is received, and when the phase-missing alarm information or the overvoltage alarm information is received, the standby service transformer is prohibited from being started, otherwise, the standby service transformer is permitted.
Further preferably, before the standby service transformer is allowed to start, the method further comprises:
transmitting electric energy or increasing transmitted electric power to the standby service transformer;
delivering electrical energy or increasing delivered electrical power to the backup service transformer comprises: and controlling the power plant to provide the generated power.
Preferably, when the output frequency does not conform to the rated frequency range, the power management server correspondingly sends a frequency modulation instruction to the power plant, so that the output frequency is kept within the rated frequency range.
Further preferably, the power management server further includes: calculating the electric energy output by the service transformer according to the output power of the service transformer;
further comprising: calculating the total electric energy of the plurality of electric energy management terminals, and subtracting the total electric energy of the plurality of electric energy management terminals from the electric energy output by the household transformer to obtain the line loss of the low-voltage distribution line;
and when the line loss of the low-voltage distribution line exceeds the line resistance loss of the low-voltage distribution line, correspondingly sending out power utilization abnormity alarm information.
Further preferably, the power management server sends the electricity utilization abnormality alarm information to a handheld terminal of an electricity manager in an area to which the low-voltage distribution line belongs;
when the power management server detects that the power management server cannot communicate with the electric energy management terminal, sending electric energy management terminal offline alarm information to a handheld terminal of an electric power manager in an area to which the electric energy management terminal belongs;
the electric energy management terminal disconnection alarm information comprises: the offline time of the electric energy management terminal and the position of the electric energy management terminal before offline;
when the power management server receives the disassembled alarm information, the power management server sends the disassembled alarm information of the power management terminal to a handheld terminal of a power manager in the area where the power management terminal sending the disassembled alarm information belongs;
electric energy management terminal is torn alarm information open and is included: the time when the electric energy management terminal is disassembled and the position of the electric energy management terminal before the electric energy management terminal is disassembled;
when the power management server receives the overvoltage alarm information, the power management server controls the service transformer or the standby service transformer to stop working;
the power supply management server sends the phase failure alarm information or the overvoltage alarm information and the undervoltage alarm information to a handheld terminal of a power manager in the area of the low-voltage distribution line;
the invention has the beneficial effects that: the power consumption of a user is counted through a plurality of electric energy management terminals, a power grid monitoring module monitors the working state of an in-house transformer, and a distribution line monitoring module acquires the power transmission state of a low-voltage distribution line; the communication module is used for connecting the electric energy management terminal and the power grid monitoring module with a power management server on the internet or a local area network in a communication way; thereby realize acquireing big data through a plurality of electric energy management terminals and electric wire netting monitoring module and distribution lines monitoring module, carry out centralized management through power management server, greatly reduced the fault rate of distribution network, the administrator can in time acquire the trouble condition of distribution network and carry out timely restoration, has improved user's power consumption greatly and has experienced.
Drawings
FIG. 1 is a schematic diagram of a power distribution structure of a big data based power management system according to a preferred embodiment of the present invention;
fig. 2 is a schematic communication structure diagram of a big data based power management system according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of specific implementations of the present invention is provided in conjunction with specific embodiments:
fig. 1 shows a power distribution structure of a big data based power management system provided by a preferred embodiment of the present invention, and for convenience of illustration, only the parts related to the embodiment of the present invention are shown, which include:
the plurality of electric energy management terminals 100 count the electricity consumption of the electric appliances 101;
the power grid monitoring module 200 is used for monitoring the working state of the household transformer 001;
the distribution line monitoring module 300 acquires the power transmission state of the low-voltage distribution line; the low-voltage distribution line is a three-phase four-wire line;
the communication module 400 is used for connecting the electric energy management terminal 100 and the power grid monitoring module 200 with the power management server 500 on the internet or the local area network in a communication manner, wherein the communication module 400 is used for communicating with the power management server 500 on the internet or the local area network by adopting a GPRS or WiFi technology.
Further, the power management terminal 100 includes:
an electric energy metering unit 101 for counting the electric energy consumed by the lower-level electric equipment of the electric energy management terminal 100; wherein the electric energy is kilowatts per hour;
a first communication unit 102 in wired communication with the communication module 400; the first communication unit 102 is a power line carrier communication module 400; the power line carrier communication module 400 is used for communication, wiring is reduced, signal transmission is stable, and the power line carrier communication module is not interfered by the environment;
a positioning unit 103, which acquires the position of the electric energy management terminal 100 in real time; the positioning unit 103 is a satellite positioning unit 103 or a base station positioning unit 103; to avoid theft of the power management terminal 100;
the anti-dismounting unit 104 is an electronic lead seal and an electronic lead seal identification unit corresponding to the electric appliance lead seal, and when the electronic lead seal is damaged, the electronic lead seal identification unit is triggered to send out dismounted alarm information; the electric energy management terminal 100 is prevented from being maliciously disassembled to tamper and steal electricity;
the first communication unit 102 sends the electric energy, the position of the electric energy management terminal 100, the disassembled alarm information to the power management server 500 through the communication module 400; and large data acquisition is realized.
Further, the grid monitoring module 200 includes:
a current detection unit 201 for detecting an output current of the household transformer 001;
a first voltage detection unit 202, configured to detect a first voltage output by the service transformer 001;
a frequency detection unit 203, configured to detect an output frequency of the service transformer 001;
a load calculating unit 204, which calculates the output power of the household transformer 001 according to the output first voltage and the output current;
the working states of the service transformer 001 include: the output power of the house-entry transformer 001, the output first voltage, the output current, and the output frequency; the working state of the home-entry transformer 001 can be acquired in real time.
Further, the distribution line monitoring module 300 is connected to the extreme end of the low voltage distribution line, and the distribution line monitoring module 300 includes:
the open-phase alarm unit 301 is used for detecting the online states of the three live wires and the zero wire of the low-voltage distribution wire and correspondingly sending out open-phase alarm information when any live wire or zero wire is offline;
the second voltage detection unit 302 is used for respectively detecting second voltages on three live wires of the low-voltage distribution wire based on the zero wire of the low-voltage distribution wire, and correspondingly sending out undervoltage alarm information or overvoltage alarm information when the second voltage of any one live wire and the zero wire of the low-voltage distribution wire is not in accordance with the rated voltage range; the running state of the low-voltage distribution line is obtained in real time;
the second communication unit 303 is configured to send the phase-missing alarm information or the overvoltage alarm information and the undervoltage alarm information to the power management server 500; the second communication unit 303 is a GPRS communication module 400, and the GPRS communication module 400 is in communication connection with the power management server 500;
the power supplies of the phase-lack alarm unit 301, the second voltage detection unit 302 and the second communication unit 303 are all obtained from the low-voltage distribution line;
the storage battery 304 is used for providing uninterrupted emergency power supply for the open-phase alarm unit 301, the second voltage detection unit 302 and the second communication unit 303; the use requirement is met.
Fig. 2 illustrates a communication structure of a big data based power management system according to a preferred embodiment of the present invention, and for convenience of description, only the relevant parts of the embodiment of the present invention are shown, wherein:
when the output power of the service transformer 001 exceeds the rated output power, the power management server 500 controls a standby service transformer 001 to be started, and the standby service transformer 001 and the service transformer 001 are connected in parallel to provide power supply for users; the indoor transformer 001 is prevented from being overloaded and burnt.
Further preferably, before the power management server 500 controls the standby service transformer 001 to start, it is determined whether the phase-missing alarm information or the overvoltage alarm information sent by the power distribution line monitoring module 300 is received, and when the phase-missing alarm information or the overvoltage alarm information is received, the standby service transformer 001 is prohibited from starting, and otherwise, the standby service transformer 001 is permitted; the standby user transformer 001 is prevented from being started due to short circuit or leakage overload.
Further preferably, before the standby service transformer 001 is allowed to start, the method further includes:
delivering electrical energy or increasing delivered electrical power to the backup service transformer 001;
delivering electrical energy or increasing delivered electrical power to the backup house-entry transformer 001 includes: controlling a power plant to provide power generation power; and the power utilization requirement is met.
Preferably, when the output frequency does not conform to the rated frequency range, the power management server 500 correspondingly sends a frequency modulation command to the power plant, so that the output frequency is kept within the rated frequency range; the normal use of the electric equipment is prevented from being influenced by the fluctuation of the frequency, and even safety accidents are avoided.
Further preferably, the power management server 500 further includes: calculating the electric energy output by the service transformer 001 according to the output power of the service transformer 001;
further comprising: calculating the total electric energy of the plurality of electric energy management terminals 100, and subtracting the total electric energy of the plurality of electric energy management terminals 100 from the electric energy output by the service transformer 001 to obtain the line loss of the low-voltage distribution line;
and when the line loss of the low-voltage distribution line exceeds the line resistance loss of the low-voltage distribution line, correspondingly sending out power utilization abnormity alarm information.
Further preferably, the power management server 500 sends the electricity abnormality alarm information to a handheld terminal of an electricity manager in an area to which the low-voltage distribution line belongs;
when the power management server 500 detects that communication with the electric energy management terminal 100 cannot be performed, sending an electric energy management terminal 100 offline alarm message to a handheld terminal of an electric power manager in an area to which the electric energy management terminal 100 belongs;
the alarm information that the electric energy management terminal 100 is disconnected includes: the offline time of the power management terminal 100 and the position of the power management terminal 100 before the offline;
when receiving the detached alarm information, the power management server 500 sends the detached alarm information of the power management terminal 100 to a handheld terminal of a power manager in an area to which the power management terminal 100 that sent the detached alarm information belongs;
the power management terminal 100 is torn down the alarm information and includes: the time when the power management terminal 100 is removed and the location of the power management terminal 100 before removal;
when the power management server 500 receives the overvoltage alarm information, the service transformer 001 or the standby service transformer 001 is controlled to stop working;
the power management server 500 sends the phase failure alarm information or the overvoltage alarm information and the undervoltage alarm information to a handheld terminal of a power manager in the area to which the low-voltage distribution line belongs; the power manager can conveniently acquire the running state of the power grid in time so as to take corresponding measures.
In the embodiment of the present invention, the power consumption of the user is counted by the plurality of power management terminals 100, the power grid monitoring module 200 monitors the working state of the household transformer 001, and the distribution line monitoring module 300 acquires the power transmission state of the low-voltage distribution line; the communication module 400 is used for connecting the electric energy management terminal 100 and the power grid monitoring module 200 with the power management server 500 on the internet or the local area network in a communication way; thereby realize acquireing big data through a plurality of electric energy management terminal 100 and electric wire netting monitoring module 200 and distribution lines monitoring module 300, carry out centralized management through power management server 500, greatly reduced the fault rate of distribution network, the administrator can in time acquire the fault condition of distribution network and carry out timely restoration, has improved user's power consumption greatly and has experienced.
In the embodiment of the present invention, each unit of the big data based power management system may be implemented by a corresponding hardware or software unit, and each unit may be an independent software or hardware unit, or may be integrated into a software or hardware unit, which is not limited herein.
Through the above description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a general hardware platform, and may also be implemented by hardware. With this in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer electronic device (which may be a personal computer, a server, or a network electronic device, etc.) to execute the methods of the various embodiments or some parts of the embodiments.
Conditional language such as "can," "might," or "may" is generally intended to convey that a particular embodiment can include (yet other embodiments do not include) particular features, elements, and/or operations, among others, unless specifically stated otherwise or otherwise understood within the context as used. Thus, such conditional language is not generally intended to imply that features, elements, and/or operations are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without student input or prompting, whether such features, elements, and/or operations are included or are to be performed in any particular embodiment.
What has been described herein in the specification and drawings includes examples that enable the provision of big data based power management systems. It will, of course, not be possible to describe every conceivable combination of components and/or methodologies for purposes of describing the various features of the disclosure, but it can be appreciated that many further combinations and permutations of the disclosed features are possible. It is therefore evident that various modifications can be made to the disclosure without departing from the scope or spirit thereof. In addition, or in the alternative, other embodiments of the disclosure may be apparent from consideration of the specification and drawings and from practice of the disclosure as presented herein. It is intended that the examples set forth in this specification and the drawings be considered in all respects as illustrative and not restrictive. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. A big data based power management system, the system comprising:
the electric energy management terminals are used for counting the electricity consumption of the electric appliances;
the power grid monitoring module is used for monitoring the working state of the household transformer;
the distribution line monitoring module is used for acquiring the power transmission state of the low-voltage distribution line;
and the communication module is used for connecting the electric energy management terminal and the power grid monitoring module with a power management server on the internet or a local area network in a communication way.
2. The system of claim 1, wherein the power management terminal comprises:
the electric energy metering unit is used for counting the electric energy consumed by the lower-level electric equipment of the electric energy management terminal;
the first communication unit is in wired communication with the communication module; the first communication unit is a power line carrier communication module;
the positioning unit is used for acquiring the position of the electric energy management terminal in real time; the positioning unit is a satellite positioning unit or a base station positioning unit;
the anti-dismounting unit is an electronic lead seal and an electronic lead seal identification unit corresponding to the electric appliance lead seal, and when the electronic lead seal is damaged, the electronic lead seal identification unit is triggered to send out dismounted alarm information;
and the first communication unit sends the electric energy, the position of the electric energy management terminal and the disassembled alarm information to the power management server through the communication module.
3. The system of claim 1, wherein the grid monitoring module comprises:
the current detection unit is used for detecting the output current of the household transformer;
the first voltage detection unit is used for detecting the first voltage output by the service transformer;
the frequency detection unit is used for detecting the output frequency of the service transformer;
the load calculation unit is used for calculating the output power of the household transformer according to the output first voltage and the output current;
the working state of the service transformer comprises the following steps: the output power of the service transformer, the output first voltage, the output current and the output frequency.
4. The system of claim 1 wherein the distribution line monitoring module is connected to an extreme end of the low voltage distribution line, the distribution line monitoring module comprising:
the open-phase alarm unit is used for detecting the online states of three live wires and zero wires of the low-voltage distribution line and correspondingly sending out open-phase alarm information when any live wire or zero wire is offline;
the second voltage detection unit is used for respectively detecting second voltages on three live wires of the low-voltage distribution wire based on the zero wire of the low-voltage distribution wire, and correspondingly sending out undervoltage alarm information or overvoltage alarm information when the second voltage of any one live wire and the zero wire of the low-voltage distribution wire is not in accordance with the rated voltage range;
the second communication unit is used for sending the phase-missing alarm information or the overvoltage alarm information and the undervoltage alarm information to the power management server; the second communication unit is a GPRS communication module which is in communication connection with the power management server;
the power supplies of the phase-lack alarm unit, the second voltage detection unit and the second communication unit are all acquired from the low-voltage distribution line;
and the storage battery provides uninterrupted emergency power supply for the phase-failure alarm unit, the second voltage detection unit and the second communication unit.
5. The system of claim 3, wherein the power management server controls a backup service transformer to be activated when the output power of the service transformer exceeds a rated output power, the backup service transformer being connected in parallel with the service transformer to provide a power supply for the user.
6. The system of claim 5 or 4, wherein before the power management server controls the standby service transformer to start, it determines whether the phase-missing alarm information or the overvoltage alarm information sent by the distribution line monitoring module is received, and when the phase-missing alarm information or the overvoltage alarm information is received, the standby service transformer is prohibited from starting, and otherwise, the standby service transformer is permitted.
7. The system of claim 6, further comprising, prior to allowing the backup service transformer to start up:
transmitting electric energy or increasing transmitted electric power to the standby service transformer;
delivering electrical energy or increasing delivered electrical power to the backup service transformer comprises: and controlling the power plant to provide the generated power.
8. The system of claim 3, wherein the power management server is configured to send a frequency modulation command to the power plant in response to the output frequency not matching a nominal frequency range, such that the output frequency remains within the nominal frequency range.
9. The system of claim 3 or 2, wherein the power management server further comprises: calculating the electric energy output by the service transformer according to the output power of the service transformer;
further comprising: calculating the total electric energy of the plurality of electric energy management terminals, and subtracting the total electric energy of the plurality of electric energy management terminals from the electric energy output by the household transformer to obtain the line loss of the low-voltage distribution line;
and when the line loss of the low-voltage distribution line exceeds the line resistance loss of the low-voltage distribution line, correspondingly sending out power utilization abnormity alarm information.
10. The system according to claim 9, wherein the power management server transmits the electricity abnormal alarm information to a handheld terminal of an electricity manager of an area to which the low-voltage distribution line belongs;
when the power management server detects that the power management server cannot communicate with the electric energy management terminal, sending electric energy management terminal offline alarm information to a handheld terminal of an electric power manager in an area to which the electric energy management terminal belongs;
the electric energy management terminal disconnection alarm information comprises: the offline time of the electric energy management terminal and the position of the electric energy management terminal before offline;
when the power management server receives the disassembled alarm information, the power management server sends the disassembled alarm information of the power management terminal to a handheld terminal of a power manager in the area where the power management terminal sending the disassembled alarm information belongs;
electric energy management terminal is torn alarm information open and is included: the time when the electric energy management terminal is disassembled and the position of the electric energy management terminal before the electric energy management terminal is disassembled;
when the power management server receives the overvoltage alarm information, the power management server controls the service transformer or the standby service transformer to stop working;
and the power management server sends the phase failure alarm information or the overvoltage alarm information and the undervoltage alarm information to a handheld terminal of a power manager in the area to which the low-voltage distribution line belongs.
CN202110547230.XA 2021-05-19 2021-05-19 Power management system based on big data Pending CN113472067A (en)

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