CN102780267B - Electric energy router - Google Patents

Electric energy router Download PDF

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Publication number
CN102780267B
CN102780267B CN201210261558.6A CN201210261558A CN102780267B CN 102780267 B CN102780267 B CN 102780267B CN 201210261558 A CN201210261558 A CN 201210261558A CN 102780267 B CN102780267 B CN 102780267B
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port
load
electric energy
power supply
power
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CN102780267A (en
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刘迎澍
李冰
杨凯新
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Tianjin University
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Tianjin University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems 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
    • Y04S40/12Systems 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
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The invention belongs to the field of the distribution-type renewable power supply utilization in an intelligent power grid and relates to an electric energy router which comprises a control unit, a wireless module, a signal detection and electric energy metering module, a switch array and a router port, wherein the router port comprises a power supply port and a load port; the power supply port comprises a power supply port dedicated for the mains supply and a plurality of common power supply ports; the control unit carries out the optimal matching on the power supply and the load according to the electric energy quality information of a power supply connected with a common power supply port and the electricity utilization characteristics of the load connected with the load port, wherein the electric energy quality information is collected by a signal detection and electric energy metering port of the power supply or is obtained by a wireless module, and the electricity utilization characteristics are collected by a load signal detection and electric energy metering port or is obtained by the wireless module; and matched power supplies and loads can be connected or switched through the switch array. According to the electric energy router, the on-grid management of various distribution-type power supplies and the optimal load matching can be realized.

Description

A kind of electric energy router
Technical field
The invention belongs to the distributed type renewable power utilization field in intelligent grid, relate to a kind of realize the grid-connected management of distributed power source and with the load optimized control device mating.
Background technology
In following intelligent grid, will there is a large amount of distribution type renewable energy (photovoltaic, wind-powered electricity generation, fuel cell etc.), be used for playing the effect of energy-saving and emission-reduction, alleviation civil power peak of power consumption.But, at present aspect the utilizing of distributed energy, still there is following problem demanding prompt solution: 1) existence of a large amount of distribution type renewable energies makes to have produced complicated bi-directional current between large electrical network and various distributed power source, and the Operation and management of electrical network is caused to many-sided impact; 2) distributed power source, owing to being subject to the impact of region and weather, has obvious uncertainty aspect power supply capacity and the quality of power supply, and existing technology and equipment can not guarantee these electric energy, is fully used.
Cause a major reason of this situation to be, the existing technology towards renewable energy utilization and equipment can not fully adapt to the requirement of intelligent grid, the electric jockey of intellectuality that lacks perfect in shape and function, especially applicable common electric energy user's low-voltage electric energy access device.Here said " electrical connection arrangement ", it is to realize simple physical connection that its function has more than, but can various electrical connections (comprise power supply is connected with load, power equipment be connected with electrical network) be monitored and be managed.On the one hand, a large amount of distribution type electric energies does not pass through " the electricity electrical system access node " of IEEE 1547 and IEC 61850 prescribed by standard with regard to direct grid-connected, bring a lot of difficulties to monitoring and the management of electrical network, traditional protection and metering device be not also because supporting bi-directional current on the verge of being replaced; On the other hand, the function of existing combining inverter aspect information and control is all more weak, causes distributed energy cannot obtain unified, effectively management.For this reason, need to set up the distribution network of a power supply and load coordinated operation, realize the operation of mating of power supply and load, can effectively address the above problem, improve the utilance of regenerative resource.
Summary of the invention
The object of the invention is to propose a kind of grid-connected management of distributed power source and distributed power source and the load optimized control device (being referred to as electric energy router here) that mates operation realized, in order to realize various distributed power sources grid-connected management and with the optimization matching of load, thereby set up that efficiency is higher, the supply and demand intelligent power distribution network of balance more.
The present invention is realized by the following technical programs:
An electric energy router, comprises control unit, wireless module, input and electric energy metering module, switch arrays and router port, wherein,
Described router port comprises a plurality of power ports and a plurality of load port, each port has unique port numbers, each power port can connect the phase in a single phase poaer supply or three phase mains, each load port can connect the phase in a single-phase load or threephase load, described power port comprises civil power power source special port and a plurality of common power port, by described switch arrays, these ports can be coupled together, connected mode is: between different common power ports, be not connected to each other, between different load ports, be not connected to each other, each common power port can be connected with civil power private port by switch arrays, for making the power supply except civil power can realize grid-connected power supply, each power port can be connected with load port by switch arrays, for described load port, can realize following connection: single phase poaer supply can only be connected with single-phase load, three phase mains each mutually must with each corresponding connection of threephase load, three phase mains can be connected with single-phase load, but all single-phase loads all can not be connected to a certain phase in three phase mains,
Described input and electric energy metering module, be arranged on the junction of router port and switch arrays, comprises that a plurality of power supply signals detect with electric energy metrical port and a plurality of load signal to detect and electric energy metrical port, each power supply signal detects with electric energy metrical port and load signal and detects with electric energy metrical port and include current detecting unit, voltage detection unit and energy information processing unit, current detecting unit is for detection of coupled power port or the electric current of load port, voltage detection unit is for detection of coupled power port or the voltage of load port, the detection signal of two unit is admitted to energy information processing unit, power supply signal detects with the energy information processing unit of electric energy metrical port and according to the detection signal of input, calculates the quality of power supply and the amount of power supply information of coupled power supply, and be transferred to control unit, load signal detects with the energy information processing unit of electric energy metrical port and according to the detection signal of input, calculates use electrical characteristics and the power consumption of coupled load, and be transferred to control unit,
Switch on described switch arrays is controlled by control unit;
Described wireless module is connected with control unit, for realize electric energy router be connected to common power port or load port each there is communicating by letter between the power supply of radio communication function and load;
Described control unit, according to the quality of power supply information detecting by power supply signal with the power supply being connected with common power port electric energy metrical port processing or that obtain by wireless module, and according to the use electrical characteristics that detect by load signal with the load being connected with load port electric energy metrical port processing or that obtain by wireless module, be connected to the power supply capacity and the mating of use electrical characteristics that is connected to the load of load port of the power supply of common power port, by switch arrays, realize being connected or switching between each power supply of matching and load, and in the process powering to the load by electric energy router at power supply, carry out Electro-metering.
As preferred implementation, common power port or for connecting distributed power source, or for connecting the power supply port of battery system; Described load port or for connecting common electrical load, or for connecting the charging port of battery system; Electric energy router also comprises the ethernet module being connected with control unit, for connecting the information system of electric energy router and micro-electrical network, and communicates with the load that is equipped with ethernet module; Described electric energy router also comprises the human-computer interface module being connected with control unit, for realizing various man-machine interactive operation.
The grid-connected device of distributing rationally of distributed power source that the present invention proposes, in order to realize the optimization matching operation of power supply and load.Its advantage is: 1) can more sufficiently and reasonably utilize the renewable energy resources, alleviate the peak of power consumption of civil power; 2) be convenient to distribution type renewable energy to carry out effectively monitoring and management, improve the Stability and dependability of power distribution network operation.
Accompanying drawing explanation
Accompanying drawing 1 is the hardware configuration of electric energy router;
Accompanying drawing 2 is to be applicable to the switch arrays of single phase poaer supply and load and the structure chart of input and electric energy metering module;
Accompanying drawing 3 is structure charts of input and electric energy metrical port, and with the connected mode of router port and switch arrays;
Accompanying drawing 4 is to connect three phase mains and the switch arrays of load and single phase poaer supply and load and the structure chart of input and electric energy metering module;
Accompanying drawing 5 is typical case's application of electric energy router, supposes that electric energy router has 4 power ports and 4 load ports;
Accompanying drawing 6 is power supply access electric energy router and the operating process of control unit while disconnecting from electric energy router;
Accompanying drawing 7 is the operating process when being furnished with the load access electric energy router of wireless communication module and disconnecting from electric energy router;
Accompanying drawing 8 is the operating process when not being equipped with the load access electric energy router of wireless communication module and disconnecting from electric energy router.
Embodiment
Below in conjunction with the accompanying drawing operation principle of the present invention that elaborates.
The invention provides a kind of grid-connected management of distributed power source and distributed power source and the load optimized electric energy route device that mates operation realized.
Referring to Fig. 1, the hardware of the electric energy router of the present embodiment comprises control unit, wireless module, input and electric energy metering module, switch arrays and router port, also comprises some wireless modules, ethernet module, human-computer interface module etc. (ethernet module wherein and human-computer interface module are not included in the essential features that realizes electric energy router of the present invention).Power port is divided into civil power private port and common power port, and the latter is for connecting the power supply port of distributed power source or battery system.Control unit is connected with electric energy metering module, switch arrays with wireless module, ethernet module, human-computer interface module, input, for realizing energy management, transfer of data and for the monitoring function of each functional module of electric energy router.
Router port comprises a plurality of power ports and a plurality of load port, each port has unique port numbers, each power port can connect the phase in a single phase poaer supply or three phase mains, each load port can connect the phase in a single-phase load or threephase load, described power port comprise civil power power source special port with a plurality of for being connected the common power port of distributed power source and storage battery, by described switch arrays, common power port and civil power port can be coupled together, to realize generating electricity by way of merging two or more grid systems of distributed energy.
Referring to Fig. 2, input and electric energy metering module are arranged on the junction of router port and switch arrays, for electric current, voltage detecting and the electric energy metrical of corresponding ports, but do not affect being connected of router port and switch arrays.If electric energy router has N power port and M load port, input and electric energy metering module comprise that N power supply signal detection and electric energy metrical port and M load signal detect and electric energy metrical port, each power supply signal detects the junction that lays respectively at corresponding power port and switch arrays with electric energy metrical port, and be connected with control unit, each load signal detects with electric energy metrical port and lays respectively at the junction of corresponding load port and switch arrays, and is connected with control unit.
Referring to Fig. 3, each power supply signal detects with electric energy metrical port and load signal and detects with electric energy metrical port and include current detecting unit, voltage detection unit and energy information processing unit, current detecting unit is for detection of coupled power port or the electric current of load port, voltage detection unit is for detection of coupled power port or the voltage of load port, the detection signal of two unit is admitted to energy information processing unit, power supply signal detects with the energy information processing unit of electric energy metrical port and according to the detection signal of input, calculates the quality of power supply and the amount of power supply information of coupled power supply, and be transferred to control unit, load signal detects with the energy information processing unit of electric energy metrical port and according to the detection signal of input, calculates use electrical characteristics and the power consumption of coupled load, and be transferred to control unit, for combining inverter (being connected to the common power port of electric energy router) and the load of being furnished with wireless communication module, also can be by wireless module to the electric energy router transmission power supply information (comprising running status, output voltage, electric current, frequency, power supply quality etc.) of power supply or the operating characteristic (running status, input voltage, electric current etc.) of load.
For being applicable to single phase poaer supply and load and having the electric energy router of N power port and M load port in Fig. 2, switch arrays comprise (M*N+N-1) individual switch; Each power port connects M switch, is used for being connected with each load port; Civil power private port is also connected with common power port by N-1 switch, for realizing the grid-connected power supply of distributed power source.
Electric energy router in Fig. 4 has a three-phase mains port, a three-phase common power port, two threephase load ports and six single-phase load ports, and switch arrays comprise N/2 switch of (M-1) *.Wherein three-phase mains port all can be connected with two threephase load ports by switch with three-phase common power port; In addition, each phase of three-phase mains port and three-phase common power port all can be connected with two single-phase load ports by switch.
In the present invention, between different common power ports, be not connected to each other, between different load ports, be not connected to each other, each common power port can be connected with civil power private port by switch arrays, for making the power supply except civil power can realize grid-connected power supply; Each power port can be connected with load port by switch arrays.For described load port, can realize following connection: single phase poaer supply can only be connected with single-phase load, three phase mains each mutually must with each corresponding connection of threephase load; Three phase mains can be connected with single-phase load, but all single-phase loads all can not be connected to a certain phase in three phase mains.
The achieved energy management functionality of electric energy router of the present invention is as follows:
1) control unit detects the power supply situation of the power supply being connected with common power port that gather with electric energy metrical port or that wireless module obtains according to power supply signal, and detect use electrical characteristics that gather with electric energy metrical port or the load being connected with load port that wireless module obtains according to load signal, the power supply capacity of carrying out common power and load by the coupling of electrical characteristics (if the power supply being connected with common power port or load port or load have ethernet port, can also obtain Power supply situation or load electrical characteristics by ethernet port), by switch arrays, realize being connected or switching between each power supply and load,
2) control unit is controlled the operation of other modules in electric energy router; Wireless module is connected with control unit, for realizing communicating by letter between electric energy router and power supply, load; Ethernet module is connected with control unit, for connecting the information system of electric energy router and micro-electrical network; Human-computer interface module is connected with control unit, for realizing various manual operations (parameter setting, state and data query etc.);
3) input and electric energy metering module are arranged on the junction of router port and switch arrays, and be connected with control unit, its effect is: (1) detect the power supply situation of the power supply be connected to electric energy router port and load by electrical characteristics and be transferred to control unit, (2) carry out Electro-metering and are transferred to control unit in load and power supply and electric energy router connection procedure;
4) switch arrays are connected with router port with control unit, for realizing being connected or switching between power supply and load, and being connected or disconnection between distributed power source and civil power.
It should be noted that in reality and implement time of the present invention, distributed power source and storage battery all need just can be connected to electric energy router of the present invention by inverter, and the inverter of storage battery is two-way.The power port of the port of said connection distributed power source and battery system power supply here and is connected battery system charging port load mouthful all do not mention inverter, electric energy router of the present invention has just configured the port that connects these several power supplys, but does not configure corresponding inverter.
The electric energy router of 8 ports shown in Figure 5 (comprising 4 power ports and 4 load ports), and being connected of various power supply and load.Civil power, photovoltaic DC-to-AC converter, wind-powered electricity generation inverter, storage battery inverter (power supply port) are connected on respectively port one ~ 4 of mains side, and illumination, air-conditioning, notebook, storage battery inverter (charging port) are connected on respectively the port 5 ~ 8 of load-side.As shown in Figure 2, port one ~ 4 of mains side are connected with the port 5 ~ 8 of load-side by switch 1 ~ 16 respectively the switch arrays of this electric energy router.
Referring to Fig. 6-Fig. 8, the specific implementation process that electric energy router of the present invention carries out energy management is as follows:
1. consider the situation of electric consumption on lighting, suppose that lighting load does not have radio communication function.
1) detection module when the port 5 of load-side detects after load, to control unit, sends new load access notice;
2) control unit is inquired about by wireless module, but does not receive and reply, and therefore need detect load characteristic by detection module, deposits this information in load information storehouse;
3) control unit is by the electric power thus supplied of wireless communication module or detection module inquiry power supply, judges that civil power, photovoltaic generation, wind-powered electricity generation, battery feed all can power as lighting apparatus.According to the principle of preferential sharp distributed power source, control unit is by the switch 4 of cut-off switch array, and Closing Switch 12, connects wind-powered electricity generation power supply and lighting load, utilizes wind-powered electricity generation for illuminalive power-supply;
2. consider photo-voltaic power supply, suppose that photovoltaic DC-to-AC converter is equipped with wireless communication module.
Now photo-voltaic power supply does not connect load, and the energy storage situation of control unit inquiry storage battery, as needs further charge, by the switch of switch arrays 5 closures, utilizes photovoltaic generation for using charge in batteries; As storage battery is full of, turn on-switch 19, and photo-voltaic power supply is connected to civil power, realize grid-connected.
3. consider air conditioning electricity, suppose that air-conditioning is equipped with wireless communication module.
After the detection module of the port 6 of load-side detects and receives air-conditioning and connect, to control unit, send load access notice, control unit is communicated by letter with air-conditioning by wireless module, inquire about and receive load information, deposit this information in load information storehouse, by inquiry Power supply state, control unit judges under present case to only have civil power to satisfy condition, therefore on off state inconvenience, still utilizes civil power to power for air-conditioning.
4. consider notebook computer, suppose that it is equipped with wireless communication module.
When the detection module of the port 7 of load-side detects after the load of receiving this port, to control unit, send new load access notice, control unit is inquired about and is received load information by wireless module, deposit this information in load information storehouse.By inquiry Power supply state, control unit judges that civil power, photovoltaic generation, battery feed all can power as notebook computer, control unit is by the switch 2 of cut-off switch array, Closing Switch 6, photovoltaic generation power supply and notebook computer are connected, utilized photovoltaic generation to power for notebook computer.
5. consider the situation that regenerative resource power supply ability changes.
Suppose that now the power supply capacity of photovoltaic levels off to zero (because of environment reason), wind power system still possesses certain power supply capacity.
Because photovoltaic system has not possessed power supply capacity, photovoltaic DC-to-AC converter quits work.Control unit learns that by the detection module of port 2 photovoltaic power generation apparatus disconnects, and photovoltaic generation information is deleted from current power information storehouse.Again by inquiry Power supply state, learn that wind-powered electricity generation now can meet the electric power supply of notebook computer, the logical switch 6 that cuts off of control unit, Closing Switch 9, connects wind-powered electricity generation and notebook computer, utilizes wind-powered electricity generation to power for notebook computer and illumination simultaneously.

Claims (4)

1. an electric energy router, comprises control unit, wireless module, input and electric energy metering module, switch arrays and router port, wherein,
Described router port comprises a plurality of power ports and a plurality of load port, each port has unique port numbers, each power port connects the phase in a single phase poaer supply or three phase mains, each load port connects the phase in a single-phase load or threephase load, described a plurality of power ports comprise civil power power source special port and a plurality of common power port, by described switch arrays, these ports are coupled together, connected mode is: between different common power ports, be not connected to each other, between different load ports, be not connected to each other, each common power port is connected with civil power power source special port by switch arrays, for making the power supply except civil power can realize grid-connected power supply, each power port is connected with load port by switch arrays, for described load port, can realize following connection: single phase poaer supply can only be connected with single-phase load, three phase mains each mutually must with each corresponding connection of threephase load, three phase mains is connected with single-phase load, but all single-phase loads all can not be connected to a certain phase in three phase mains,
Described input and electric energy metering module, be arranged on the junction of router port and switch arrays, comprises that a plurality of power supply signals detect with electric energy metrical port and a plurality of load signal to detect and electric energy metrical port, each power supply signal detects with electric energy metrical port and load signal and detects with electric energy metrical port and include current detecting unit, voltage detection unit and energy information processing unit, current detecting unit is for detection of coupled power port or the electric current of load port, voltage detection unit is for detection of coupled power port or the voltage of load port, the detection signal of two unit is admitted to energy information processing unit, power supply signal detects with the energy information processing unit of electric energy metrical port and according to the detection signal of input, calculates the quality of power supply and the amount of power supply information of coupled power supply, and be transferred to control unit, load signal detects with the energy information processing unit of electric energy metrical port and according to the detection signal of input, calculates use electrical characteristics and the power consumption of coupled load, and be transferred to control unit,
Switch on described switch arrays is controlled by control unit;
Described wireless module is connected with control unit, for realize electric energy router be connected to common power port or load port each there is communicating by letter between the power supply of radio communication function and load;
Described control unit, according to the quality of power supply information detecting by power supply signal with the power supply being connected with common power port electric energy metrical port processing or that obtain by wireless module, and according to the use electrical characteristics that detect by load signal with the load being connected with load port electric energy metrical port processing or that obtain by wireless module, be connected to the power supply capacity and the mating of use electrical characteristics that is connected to the load of load port of the power supply of common power port, by switch arrays, realize being connected or switching between each power supply of matching and load, and in the process powering to the load by electric energy router at power supply, carry out Electro-metering.
2. electric energy router according to claim 1, is characterized in that, described common power port or for connecting distributed power source, or for connecting the power supply port of battery system; Described load port or for connecting common electrical load, or for connecting the charging port of battery system.
3. electric energy router according to claim 1 and 2, it is characterized in that, described electric energy router also comprises the ethernet module being connected with control unit, for connecting the information system of electric energy router and micro-electrical network, and communicates with the load that is equipped with ethernet module.
4. electric energy router according to claim 1 and 2, is characterized in that, described electric energy router also comprises the human-computer interface module being connected with control unit, for realizing various man-machine interactive operation.
CN201210261558.6A 2012-07-26 2012-07-26 Electric energy router Active CN102780267B (en)

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CN103973559B (en) * 2014-05-30 2017-01-25 国家电网公司 Energy router based on fusion of information physical system
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CN106385024B (en) * 2016-09-27 2020-01-24 天津大学 Modular electric energy router device and implementation method thereof
CN106602564B (en) * 2017-01-18 2019-12-13 国家电网公司 Energy router for household power distribution system
CN107134914B (en) * 2017-06-05 2019-05-14 浙江大学 A kind of self-organizing electric energy router applied to low-voltage distribution terminal
CN107086564B (en) * 2017-06-20 2020-05-22 太原理工大学 Multi-port direct current energy router based on Boost-Buck circuit
CN108989214B (en) * 2018-08-31 2023-12-19 国网江苏省电力有限公司徐州供电分公司 Information sensing system of energy router
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