CN102810909B - Energy management method capable of matching distributed power sources with loads - Google Patents

Abstract

The invention belongs to the technical field of smart grid, and relates to an energy management method capable of matching distributed power sources and loads. A device capable of realizing grid-connected management of distributed power sources and optimal matching operation of distributed power sources and loads is adopted, which is called As an energy router, the method is as follows: the control unit connects the idle load port to the dedicated port of the mains. When the load without wireless communication function is connected to the energy router through the load port, it is first powered by the mains, and the control unit detects and communicates with the mains through the signal. The energy metering module detects its working characteristics; the control unit performs matching analysis on each power supply and load, and connects and supplies power to the corresponding power supply and load through the switch array module; when a distributed power supply can meet the requirements of multiple loads working at the same time, the control unit The unit controls the switch array module to connect the distributed power supply with corresponding multiple loads and supply power. The invention can realize the optimal matching of power supply and load.

Description

An energy management method that can realize distributed power supply and load matching

technical field

The invention relates to an energy management method capable of matching distributed power sources and loads, and belongs to the field of distributed renewable power utilization in smart grids.

Background technique

In the future smart grid, there will be a large number of distributed renewable energy sources (photovoltaic, wind power, fuel cells, etc.), which will be used to save energy, reduce emissions, and alleviate peak power consumption. However, there are still the following problems to be solved urgently in the utilization of distributed energy: 1) The existence of a large number of distributed renewable energy causes complex two-way power flow between the large power grid and various distributed power sources, which affects the operation of the power grid. 2) Due to the influence of regions and weather, distributed power generation has obvious uncertainties in power supply capacity and power quality, and existing technologies and equipment cannot guarantee that these power energies will be fully utilized.

An important reason for this situation is that the existing technologies and equipment for the utilization of renewable energy cannot fully meet the requirements of the smart grid. On the one hand, a large amount of distributed electric energy is directly connected to the grid without passing through the "electrical access node" stipulated in the IEC 61850 standard, which brings many difficulties to the monitoring and management of the grid. Faced with elimination; on the other hand, the existing grid-connected inverters are relatively weak in information and control functions, and do not support any working mode and online adjustment of operating parameters. In order to ensure that the output voltage meets the grid-connected requirements, the existing grid-connected inverters have strict restrictions on the input voltage. When the output voltage of renewable energy is lower than the set value of the input voltage of the inverter, the grid-connected inverter will stop working, thus causing serious waste of renewable energy.

In fact, various loads have different requirements on the input voltage and power quality of the power supply. For example, low-voltage lighting loads and DC loads (computers, battery chargers, etc.), the input voltages of their drive circuits and power adapters (switching power supplies) are far lower than the mains standard, and there are no special requirements for power quality. Even if the power output by the inverter does not meet the requirements for grid connection, it can still supply power to these loads. Therefore, as long as a power distribution network with coordinated operation of power supply and load is established to realize the matching operation of power supply and load, the above problems can be effectively solved and the utilization rate of renewable energy can be improved.

Contents of the invention

The invention belongs to the technical field of smart grid, and relates to an energy management method capable of matching distributed power sources and loads. A device capable of realizing grid-connected management of distributed power sources and optimal matching operation of distributed power sources and loads is adopted, which is called As an energy router, the method is as follows: the control unit connects the idle load port to the dedicated port of the mains. When the load without wireless communication function is connected to the energy router through the load port, it is first powered by the mains, and the control unit detects and communicates with the mains through the signal. The energy metering module detects its working characteristics; the control unit performs matching analysis on each power supply and load, and connects and supplies power to the corresponding power supply and load through the switch array module; when a distributed power supply can meet the requirements of multiple loads working at the same time, the control unit The unit controls the switch array module to connect the distributed power supply with corresponding multiple loads and supply power. The invention can realize the optimal matching of power supply and load.

The purpose of the present invention is to propose a power router and its energy management method to realize optimal matching between various distributed power sources and loads, thereby establishing an intelligent power distribution network with higher energy efficiency and more balanced supply and demand. The present invention is achieved through the following technical solutions:

An energy management method that can realize distributed power supply and load matching, adopts a device that can realize distributed power supply grid-connected management, and distributed power supply and load optimal matching operation, called a power router, including: including a control unit , wireless module, signal detection and energy metering module, switch array and router port, wherein,

The router port includes a plurality of power ports and a plurality of load ports, each port has a unique port number, each power port can be connected to a single-phase power supply or one phase of a three-phase power supply, and each load port can be connected to A single-phase load or one phase of a three-phase load, the power port includes a dedicated power port for commercial power and a plurality of common power ports, and these ports can be connected through the switch array;

The signal detection and electric energy metering module is arranged at the connection between the router port and the switch array, and includes multiple power signal detection and electric energy metering ports and multiple load signal detection and electric energy metering ports; each power signal detection and electric energy metering Both the port and the load signal detection and power metering port include a current detection unit, a voltage detection unit and a power information processing unit. The current detection unit is used to detect the current of the power port or load port connected to it, and the voltage detection unit is used to detect the connected The voltage of the power port or the load port, the detection signals of the two units are sent to the power information processing unit, and the power signal detection and power information processing unit of the power metering port calculates the power quality and power supply of the power supply connected to it according to the input detection signal The power information processing unit of the load signal detection and power metering port calculates the power consumption characteristics and power consumption of the load connected to it according to the input detection signal, and transmits it to the control unit;

The switches on the switch array are controlled by the control unit;

The wireless module is connected with the control unit, and is used to realize the communication between the power router and each power supply and load with wireless communication function connected to the common power supply port or the load port;

The control unit is based on the power quality information of the power supply connected to the common power port acquired through the power signal detection and the power metering port or through the wireless module, and according to the load signal detection and the power metering port. The power consumption characteristics of the load connected to the load port acquired by the module are used to match the power supply capacity of the power supply connected to the common power supply port with the power consumption characteristics of the load connected to the load port. Connection or switching between loads, and power consumption metering during the process of power supply to the load through the power router;

The energy management method realized by using this power router is as follows:

1) If the grid-connected inverter of the distributed power supply has wireless communication function, when it is connected to the power port of the power router for the first time, the power supply information of the distributed power supply (including power supply type, supply voltage and power supply current, etc.), used to establish a power supply information database;

2) If the load has wireless communication function, when it is connected to the load port of the power router for the first time, the load information (including load type, rated voltage and rated current, etc.) should be provided to the control unit through the wireless module to establish the load information database;

3) If the grid-connected inverter of the distributed power supply has wireless communication function, when it is connected to the power port of the power router, it must provide the control unit with real-time power supply information (instant voltage, real-time current and estimated duration, etc.) through the wireless module ), used for grid-connected management, matching load and power supply operation monitoring;

4) If the load has a wireless communication function, when the load is connected to the power router, the real-time power demand information (input voltage, power, estimated power consumption time, etc.) operation monitoring;

5) If the grid-connected inverter of the distributed power supply does not have the wireless communication function, when connected to the power port of the power router, the control unit obtains its real-time power supply information through the signal detection and power metering module, which is used for grid-connected management, Matching load and power supply operation monitoring;

6) The control unit connects the idle load port to the dedicated port of the mains. When the load without wireless communication function is connected to the power router through the load port, it is powered by the mains first, and the control unit detects its load through the signal detection and power metering module. Working characteristics, used for power matching and load monitoring;

7) The control unit analyzes and matches the operating status of each power supply, power supply information, load power demand or working characteristics. If the power supply quality and output power of a certain power supply can meet the requirements of a certain load, the control unit passes the switch The array module connects and supplies power to the corresponding power supply and load;

8) When a distributed power supply can meet the requirements of multiple loads working at the same time, the control unit controls the switch array module to connect the distributed power supply to the corresponding multiple loads and supply power;

9) One power supply can supply power to two or more loads at the same time, but one load cannot receive power from two or more distributed power sources at the same time.

As a preferred embodiment, the common power port of the power router is either used to connect to a distributed power supply, or used to connect to a power supply port of a storage battery system; the load port of the power router is used to connect to a common electrical load, or For connecting the charging port of the storage battery system, the energy management method further includes: when the distributed power source connected to the power router can meet the requirements of the load, the control unit preferentially uses the distributed power source to supply power to the load, and when the distributed power source When the power demand of the load cannot be met, the control unit gives priority to the use of the battery system, and through the corresponding switch of the gating switch array, the battery system supplies power to the load; when the battery system cannot meet the power demand of the load, the control unit uses the mains power for Load power supply; when a distributed power supply does not have a matching load, the control unit connects the power port of the distributed power supply to the battery charging port through the switch array to charge the battery. At this time, the battery power supply port cannot be connected to the battery. Charging port connection; when the distributed power supply has no matching load and the battery is fully charged or not connected to the battery, the power router connects the distributed power supply port with the special port of the mains to realize grid-connected output power.

The connection mode of the router port should be: different common power ports are not connected to each other, and different load ports are not connected to each other. Enable power supplies other than commercial power to be connected to the grid; each power port can be connected to the load port through a switch array; for the load port, the following connections can be realized: single-phase power can only be connected to single-phase loads, Each phase of the three-phase power supply must be connected to each phase of the three-phase load; the three-phase power supply can be connected to a single-phase load, but all single-phase loads cannot be connected to a certain phase of the three-phase power supply;

The energy management method proposed by the invention is used to realize the optimal matching operation of the power supply and the load. Its advantages are: 1) It can make more full and reasonable use of renewable energy and alleviate the peak power consumption of city power; 2) It facilitates effective monitoring and management of distributed renewable energy and improves the stability and reliability of power grid operation.

Description of drawings

Accompanying drawing 1 is the hardware structure of power router;

Accompanying drawing 2 is the structural diagram of switch array and signal detection and electric energy metering module applicable to single-phase power supply and load;

Accompanying drawing 3 is the structural diagram of signal detection and electric energy metering port, and its connection mode with router port and switch array;

Accompanying drawing 4 is the structural diagram of switch array and signal detection and electric energy metering module that can connect three-phase power supply and load, and single-phase power supply and load;

Figure 5 is a typical application of the power router, assuming that the power router has 4 power ports and 4 load ports;

Accompanying drawing 6 is the operation process of the control unit when the power supply is connected to the power router and disconnected from the power router;

Accompanying drawing 7 is the operation process when the load equipped with the wireless communication module is connected to the power router and disconnected from the power router;

Fig. 8 is an operation process when a load not equipped with a wireless communication module is connected to and disconnected from the power router.

Detailed ways

The working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

Firstly, the core component used in the present invention-the power router is introduced.

Referring to Fig. 1, the hardware of the power router in this embodiment includes a control unit, a wireless module, a signal detection and power metering module, a switch array and a router port, and also includes some wireless modules, Ethernet modules, man-machine interface modules, etc. (the The Ethernet module and the man-machine interface module are not included in the necessary technical features of the power router of the present invention). The power port is divided into a special port for mains power and a common power port, the latter is used to connect the power supply port of the distributed power supply or the battery system. The control unit is connected with the wireless module, the Ethernet module, the human-machine interface module, the signal detection and electric energy metering module, and the switch array to realize energy management, data transmission, and monitoring functions for each functional module of the electric energy router.

Router ports include multiple power ports and multiple load ports, each port has a unique port number, each power port can be connected to a single-phase power supply or one phase of the three-phase power supply, and each load port can be connected to a single-phase The load or one phase of the three-phase load, the power port includes a special power port for the mains and a plurality of common power ports for connecting the distributed power supply and the storage battery. The electrical ports are connected to realize grid-connected power generation of distributed energy.

Referring to Figure 2, the signal detection and power metering module is set at the connection between the router port and the switch array, and is used for current and voltage detection and power metering of the corresponding port, but does not affect the connection between the router port and the switch array. Assuming that the power router has N power ports and M load ports, the signal detection and power metering module includes N power signal detection and power metering ports and M load signal detection and power metering ports, and each power signal detection and power metering port They are respectively located at the connection between the corresponding power supply port and the switch array, and are connected to the control unit. Each load signal detection and electric energy metering port is respectively located at the connection between the corresponding load port and the switch array, and connected to the control unit.

Referring to Figure 3, each power signal detection and power metering port and load signal detection and power metering port include a current detection unit, a voltage detection unit and a power information processing unit, and the current detection unit is used to detect the power port or load port connected to it The current and voltage detection unit is used to detect the voltage of the power port or load port connected to it. The detection signals of the two units are sent to the power information processing unit. The signal calculates the power quality and power supply information of the power supply connected to it, and transmits it to the control unit. The power information processing unit of the load signal detection and power metering port calculates the power consumption characteristics and power consumption of the load connected to it according to the input detection signal. power and transmit it to the control unit; for the grid-connected inverter (connected to the common power port of the power router) and the load equipped with a wireless communication module, the power supply information of the power supply (including the running status, output voltage, current, frequency, power supply quality, etc.) or the operating characteristics of the load (running status, input voltage, current, etc.).

For the power router in Figure 2, which is suitable for single-phase power supply and load, and has N power ports and M load ports, the switch array includes (M*N+N-1) switches; each power port is connected to M switches , used to connect to each load port; the special port for mains power is also connected to the common power port through N-1 switches, which is used to realize distributed power grid-connected power supply.

The power router in Fig. 4 has a three-phase mains port, a three-phase common power port, two three-phase load ports and six single-phase load ports, and the switch array includes (M-1)*N/2 switches. The three-phase mains port and the three-phase common power port can be connected to two three-phase load ports through a switch; in addition, each phase of the three-phase mains port and the three-phase common power port can be connected to two single-phase load ports through a switch Phase load port connection.

In the present invention, different common power supply ports are not connected to each other, and different load ports are not connected to each other, and each common power supply port can be connected to the special port of the mains power through the switch array, which is used to make the power supply other than the mains power It can realize grid-connected power supply; each power port can be connected to the load port through the switch array. For the load port, the following connections can be realized: single-phase power supply can only be connected to single-phase load, each phase of three-phase power supply must be connected to each phase of three-phase load; three-phase power supply can be connected to single-phase load , but all single-phase loads cannot be connected to one phase of the three-phase power supply.

The energy management functions that the power router of the present invention can realize are as follows:

1) The control unit detects the power supply status of the power supply connected to the ordinary power port according to the power signal detection and the power supply collected by the power metering port or the wireless module, and detects the load signal according to the power supply signal collected by the power metering port or the wireless module. The power consumption characteristics of the load connected to the load port are used to match the power supply capacity of the common power supply with the power consumption characteristics of the load (if the power supply or load connected to the common power supply port or the load port has an Ethernet port, it can also be connected through the Ethernet port. The port obtains the power supply status or the load power consumption characteristics), and realizes the connection or switching between each power supply and the load through the switch array;

2) The control unit controls the operation of other modules in the power router; the wireless module is connected to the control unit to realize the communication between the power router and the power supply and load; the Ethernet module is connected to the control unit to connect the power router to the microgrid The information system; the human-machine interface module is connected with the control unit to realize various manual operations (parameter setting, status and data query, etc.);

3) The signal detection and power metering module is set at the connection between the router port and the switch array, and connected to the control unit. Its functions are: (1) Detect the power supply status of the power supply connected to the power router port and the power consumption characteristics of the load Transmit to the control unit, (2) measure the power consumption and transmit to the control unit during the connection process of the load and power supply with the power router;

4) The switch array is connected with the control unit and the router port to realize the connection or switching between the power supply and the load, and the connection or disconnection between the distributed power supply and the mains.

It should be noted that when the present invention is actually implemented, both the distributed power source and the storage battery need to be connected to the power router of the present invention through an inverter, and the inverter of the storage battery is bidirectional. The power port connecting the distributed power supply and the power supply port of the battery system and the load port connecting the charging port of the battery system mentioned here do not mention the inverter. The power router of the present invention is only configured with ports connecting these types of power sources. But there is no corresponding inverter configured.

The energy management method that can be realized by adopting the power router of the present invention includes:

1) When the grid-connected inverter of the distributed power supply is connected to the power router for the first time, it needs to provide power supply information (including power supply type, rated voltage, current, etc.) to the control unit through the wireless module to establish a power supply information database;

2) When the load is connected to the power router for the first time, it needs to provide load information (including load type, rated voltage, current, etc.) to the control unit through the wireless module to establish the load information database;

3) When the grid-connected inverter of the distributed power source is connected to the power router, real-time power supply information (voltage, current, expected duration, etc.) should be provided to the control unit for grid-connected management, load matching and power supply operation monitor;

4) When the load is connected to the power router, real-time power demand information (input voltage, power, estimated power consumption time, etc.) should be provided to the control unit for power matching and load operation monitoring;

5) When the power inverter without wireless module is connected to the power router, the control unit obtains its real-time power supply information through the detection module, which is used for grid connection management, load matching and power supply operation monitoring;

6) The control unit connects the idle load port to the mains. When the load without a wireless module is connected to the power router, it is powered by the mains first. The control unit detects its working characteristics through the detection module, which is used for power matching and load monitoring. Operation monitoring;

7) The control unit analyzes and matches the operating status of the power supply, power supply information, power demand of the load or working characteristics. When the power supply quality and output power of the power supply can meet the requirements of the load, the control unit will pass the corresponding switch array module. The power supply and load are connected and powered;

8) When the distributed power connected to the power router can meet the requirements of the load, the control unit gives priority to using the distributed power to supply power to the load; when the distributed power cannot meet the power demand of the load, the control unit gives priority to using the battery backup power To supply power to the load, when the battery backup power supply cannot meet the power demand of the load, the control unit uses the mains power to supply power to the load;

9) When a distributed power supply can meet the requirements of multiple loads working at the same time, the control unit controls the switch array module to connect the power supply to the corresponding multiple loads and supply power;

10) The power output port and charging port of the battery can be connected to the power router as a power source and a load respectively. When the distributed power source has no matching load, the control unit connects it to the battery port through the switch array to charge the battery, but the battery The power output port of the battery cannot be connected to the charging port of the battery;

11) When the distributed power supply has no matching load and the battery is fully charged or not connected to the battery, the power router connects the distributed power supply to the mains port to realize grid-connected output of electric energy;

12) One power supply can supply power to two or more loads at the same time, but one load cannot receive power from two or more renewable energy sources at the same time.

Refer to the 8-port power router (including 4 power ports and 4 load ports) shown in Figure 5, and the connections between various power sources and loads. Mains, photovoltaic inverters, wind power inverters, and battery inverters (power supply ports) are respectively connected to ports 1 to 4 on the power supply side, and lighting, air conditioners, notebooks, and battery inverters (charging ports) are respectively connected to load ports. Ports 5~8 on the side. The switch array of the power router is shown in Figure 2, and the ports 1-4 on the power supply side are respectively connected to the ports 5-8 on the load side through switches 1-16.

Referring to Fig. 6-Fig. 8, the specific implementation process of energy management by the power router of the present invention is as follows:

1. Consider the situation of lighting power consumption, assuming that the lighting load does not have wireless communication function.

1) When the detection module of port 5 on the load side detects the load, it sends a new load access notification to the control unit;

2) The control unit inquires through the wireless module, but does not receive a response, so it needs to detect the load characteristics through the detection module, and store the information in the load information database;

3) The control unit queries the power supply status of the power supply through the wireless communication module or the detection module, and determines that the mains power, photovoltaic power generation, wind power, and battery power can all supply power to the lighting equipment. According to the principle of prioritizing the distributed power supply, the control unit connects the wind power supply to the lighting load by turning off the switch 4 of the switch array and closing the switch 12, and uses wind power to supply power for the lighting;

2. Consider the photovoltaic power supply, assuming that the photovoltaic inverter is equipped with a wireless communication module.

At this time, the photovoltaic power supply is not connected to the load, and the control unit inquires about the energy storage of the storage battery. If further charging is required, the switch 5 of the switch array is closed, and the photovoltaic power is used to charge the storage battery; if the storage battery is fully charged, the switch 19 is turned on. Connect the photovoltaic power supply to the mains to realize grid connection.

3. Considering the power consumption of the air conditioner, it is assumed that the air conditioner is equipped with a wireless communication module.

When the detection module of port 6 on the load side detects that the air conditioner is connected, it sends a load access notification to the control unit, and the control unit communicates with the air conditioner through the wireless module, queries and receives the load information, and stores the information in the load information database , by querying the power supply status, the control unit judges that only the mains power meets the conditions under the current situation, so the switch state is inconvenient, and the mains power is still used to supply power for the air conditioner.

4. Considering the power consumption of the notebook computer, it is assumed that it is equipped with a wireless communication module.

When the detection module of port 7 on the load side detects the load connected to the port, it sends a new load access notification to the control unit, and the control unit inquires and receives the load information through the wireless module, and stores the information in the load information database. By querying the power supply status of the power supply, the control unit determines that the mains power, photovoltaic power generation, and battery power can all supply power to the notebook computer. The control unit disconnects switch 2 of the switch array and closes switch 6 to connect the photovoltaic power supply to the notebook computer. Photovoltaic generation powers the laptop.

5. Consider changes in renewable energy supply capacity.

Assuming that the power supply capacity of photovoltaics is close to zero at this time (due to environmental reasons), the wind power system still has a certain power supply capacity.

Since the photovoltaic system no longer has the power supply capability, the photovoltaic inverter stops working. The control unit learns that the photovoltaic power generation device has been disconnected through the detection module of port 2, and deletes the photovoltaic power generation information from the current power source information database. Then by inquiring the power supply status, it is known that the wind power can meet the power supply of the notebook computer at this time, the control unit cuts off the switch 6, closes the switch 9, connects the wind power to the notebook computer, and utilizes the wind power to supply power for the notebook computer and lighting at the same time.

Claims (3)

1. the energy management method that can realize distributed power source and load matched, adopt a kind of grid-connected management of distributed power source and distributed power source and the load optimized device that mates operation realized, be referred to as electric energy router, comprise 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 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 can be coupled together;

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 at electricity

In the process that source powers to the load by electric energy router, carry out Electro-metering;

The energy management method that utilizes this kind of electric energy router to realize is as follows:

1) if the combining inverter of distributed power source has radio communication function, when first connection arrives the power port of electric energy router, the power supply information of distributed power source will be provided to control unit by wireless module, comprise power supply type, supply power voltage and supply current, for setting up power information storehouse;

2) if load has radio communication function, when first connection arrives the load port of electric energy router, to control unit, provide load information by wireless module, comprise loadtype, rated voltage and rated current, for setting up load information storehouse;

3) if the combining inverter of distributed power source has radio communication function, when being connected to the power port of electric energy router, to to control unit, provide instant power supply information by wireless module, comprise instant voltage, instant electric current and estimate the duration, for the operation monitoring of grid-connected management, matched load and power supply;

4) if load has radio communication function, when load is connected to electric energy router, to to control unit, provide instant need for electricity information by wireless module, comprise input voltage, power and expectation electricity consumption time, for the operation monitoring of power supply coupling and load;

5) if the combining inverter of distributed power source does not have radio communication function, when being connected to the power port of electric energy router, control unit obtains its instant power supply information by input and electric energy metering module, for the operation monitoring of grid-connected management, matched load and power supply;

6) control unit is connected idle load port with civil power power source special port, when not thering is the load of radio communication function and be connected to electric energy router by load port, first by mains-supplied, control unit detects its operating characteristic by input and electric energy metering module, for the operation monitoring of power supply coupling and load;

7) control unit is analyzed and mates the need for electricity of the running status of each power supply, power supply information, load or operating characteristic, when if the power supply quality of certain power supply and power output all can meet certain load request, control unit is connected corresponding power supply and is powered by switch arrays module with load;

8) when certain distributed power source can meet requiring that a plurality of loads work simultaneously, control unit control switch array module connects this distributed power source power with corresponding a plurality of load;

9) power supply can be simultaneously to two or more load supplyings, but load can not be accepted the power supply of two or more distributed power sources simultaneously.

2. energy management method according to claim 1, is characterized in that, the common power port of described electric energy router or for connecting distributed power source, or for connecting the power supply port of battery system; The load port of described electric energy router or for connecting common electrical load, or for connecting the charging port of battery system, described energy management method also comprises:

1) when the distributed power source of access electric energy router can meet requiring of load, control unit preferentially utilizes distributed power source to this load supplying, when distributed power source can not meet the electricity consumption needs of load, control unit preferentially utilizes battery system, by the respective switch of gating switch array, make battery system to load supplying; When battery system can not meet the electricity consumption needs of load, control unit utilizes civil power for load supplying;

2) when load that certain distributed power source does not match, control unit is connected to charge in batteries port by switch arrays by the power port of this distributed power source, be charge in batteries, now, storage battery power supply port can not be connected with charge in batteries port;

3) load not matching when distributed power source, and storage battery being when being full of or not connected storage battery, and electric energy router is connected distributed electrical source port with civil power power source special port, realize grid-connected output electric energy.

3. the energy management method of realizing distributed power source and load matched according to claim 1, it is characterized in that, the connected mode of described router port 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 power source special 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.