CN202737466U - Hierarchical micro power grid networking device based on terminal user - Google Patents
Hierarchical micro power grid networking device based on terminal user Download PDFInfo
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- CN202737466U CN202737466U CN2012201862952U CN201220186295U CN202737466U CN 202737466 U CN202737466 U CN 202737466U CN 2012201862952 U CN2012201862952 U CN 2012201862952U CN 201220186295 U CN201220186295 U CN 201220186295U CN 202737466 U CN202737466 U CN 202737466U
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- 230000006855 networking Effects 0.000 title claims abstract description 38
- 238000004146 energy storage Methods 0.000 claims abstract description 63
- 230000008878 coupling Effects 0.000 claims description 28
- 238000010168 coupling process Methods 0.000 claims description 28
- 238000005859 coupling reaction Methods 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 7
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- 238000005057 refrigeration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000005485 electric heating Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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Abstract
The utility model discloses a hierarchical micro power grid networking device based on terminal user and relates to a micro power grid networking device. A user level micro power grid is composed of a micro power grid bus, a power distribution network bus, a load switch, a power switch, an energy storage switch, a micro power grid switch and a distribution network switch, wherein the micro power grid bus is an alternative current or direct current bus and connected with a community level micro power grid by the micro power grid switch, the power distribution network bus is connected with the public power distribution network by the power distribution network switch; a conventional load is connected with the public power distribution network, a compatible load is connected with the micro power grid bus or the power distribution network bus by the load switch, a power distribution power supply is connected with the power supply switch or the micro power grid bus, an energy storage device is connected with the micro power grid bus or the power distribution network bus by the energy storage switch. The hierarchical micro power grid networking device is suitable for networking the distribution type power generation micro power grid of the user terminal using photovoltaic or scenery complementary devices.
Description
Technical field
The utility model relates to a kind of little electrical network network device, relate in particular to the little electrical network network device of a kind of classification based on the terminal use, be specifically related in a kind of new energy field, use photovoltaic or wind light mutual complementing equipment to carry out little electrical network networking structure of the terminal use of distributed power generation.
Background technology
Increasingly serious along with the global energy situation occupies more and more consequence take solar energy and wind light mutual complementing power generation as main new forms of energy in power field.At present, the cost of distributed power generation equipment reduces gradually, domestic terminal use, and the terminal use who particularly has single family house resident or back yard industry, commercial building uses these generation of electricity by new energy equipment just more and more widely.
But the new forms of energy such as solar energy, wind energy generally have the characteristics of unreliability and unpredictability, and the characteristic variations of energy-storage travelling wave tube and customer charge also has certain uncertainty, and therefore the randomness of whole device is stronger.Therefore generation of electricity by new energy equipment is directly accessed power distribution network to carry out energy exchange and will bring certain potential safety hazard to power distribution network.Therefore, usually need to comprise that renewable generation of electricity by new energy equipment, energy storage device, user's set form separately a little electrical network.
The structure of the most of little electrical networks that moving at present all is the personal type structure of single-stage feedback type structure or single-stage.Single-stage feedback type structure refers to that the user connects together the mode of its distributed power generation equipment by networking, makes it to meet distributed energy be incorporated into the power networks condition, for example some industrial working or large building according to the requirement of power supply enterprise; The personal type structure of single-stage refers to generating equipment directly and the connection of loading of be connected, generate electricity and can directly use by oneself, such as some vehicle charging stations and gas station etc.Little power system operating mode of these structures is comparatively limited; for example; under the little electric network composition of feedback type; if extraneous distribution network failure has a power failure, in Q/GDW 666-2011 " distributed power source access power distribution network measuring technology standard ", the requirement of unplanned property island protect; little electrical network must cut off with extraneous power distribution network and be connected; in this case, even distributed energy equipment can work, also can't be to own load power supply.The power supply enterprise side of causing and user side's dispute are more.
The utility model content
The purpose of this utility model just is to overcome the shortcoming and defect of existing little electrical network networking structure, provide safety and stability, operational mode flexibly, can satisfy the little electrical network network device of a kind of classification based on the terminal use of power supply enterprise and customer requirements.
The purpose of this utility model is achieved in that
1, little electrical network is divided into the little electrical network of user class and the little electrical network of community-level
The scope of the little electrical network of community-level contains shopping centre, groups of building and the residential quarters etc. that concentrate relatively a region; The scope of the little electrical network of user class contains certain independent user power utilization scope, such as only dwelling house and small building etc.
2, customer charge is classified
Customer charge is divided into two classes according to the requirement of the quality of power supply and electromagnetic compatibility.
One class is had relatively high expectations to the quality of power supply, need to satisfy the requirement of first order quality of power supply in " IEC61000-2-4:2002 ", needs the power supply of high-quality and high stability, such as rotating machinery, refrigeration plant, need the equipment of long-time running etc.; Be conventional equipment Lr with this type of device definition, the power distribution network that the fixing access of these equipment electric company provides uses conventional electric power.
Another kind of is to the less demanding equipment of the quality of power supply, less demanding to the aspects such as stability of the stability of supply power voltage and frequency and power supply, such as the charging device of electronic product, electric heating equipment etc.; Be compatible equipment Lc with this type of device definition.Compatible equipment Lc then passes through little electrical network of commutator access user level.
3, the formation of the little electrical network of user class
The little electrical network of user class mainly is made of two-way bus and switch, and wherein one road bus is defined as little electrical network bus, is connected with the little electrical network of community-level, consists of little electrical network loop; And another road bus is defined as the power distribution network bus, is connected with the power distribution network of electric company, can provide reliability higher municipal administration power supply.User's compatibility load, energy storage device then are connected to the two-way bus by commutator respectively, and distributed power source is connected with little electrical network bus by switch.
4, the operational mode of little electric net device
As required, the little electrical network of user class both can be connected in the little electrical network of higher level, also can be connected in power distribution network, also can make double-bus simultaneously charged.
When the power of distributed power source in the little electrical network of user class can satisfy user's power load and charging requirement, the little electrical network of user class was in poised state, and the user can select little electrical network isolated operation, disconnects with being connected all of higher level's electrical network.
Distributed power source can be connected the little electrical network of user class greater than the requirement of load Lc and energy-storage travelling wave tube Ce charging with the little electrical network of community-level in the little electrical network of user class, and unnecessary electric energy can be transported on the little electrical network of community-level, for other users; On the contrary, when distributed energy can not satisfy personal situation in the little electrical network of user class, also can be connected to the little electrical network of community-level, use the dump energy from other users.
When the distributed power source in the little electrical network of whole community-level can't satisfy the compatible load of current all users Lc, can differentiate decision by little power grid control device, only compatible load Lc is seamlessly switched to the power distribution network power supply.
When distributed power source in the little electrical network of whole community-level residue is arranged the time, the little electrical network of community-level can be connected by single point of common coupling (PCC) with power distribution network, under the prerequisite that the distribution type electric energy access power distribution network that satisfies Q/GDW 666-2011 " distributed power source access power distribution network measuring technology standard " defined requires, can be to the anti-electric energy that send of power distribution network.
The user has power to make decision for the operational mode of the little electrical network of user class, and the user both can determine according to self wish the operational mode of little electrical network, also can give the automation equipment trustship with the control of little electrical network.
5, the electric pressure of little electrical network and alternating current-direct current design
Little electrical network described in the utility model belongs to the little electrical network of low pressure of terminal use's side, and its electric pressure is no more than 400Vrms.As required, little electrical network bus both can be designed as ac bus, also can be designed as dc bus.
When being designed to ac bus, the little electrical network of community-level is ac bus, then the point of common coupling place configures the phase modulation apparatus same period, little electrical network bus of the little electrical network of user class also is ac bus, the on-load switch side need not to configure electrical energy changer, the mains switch side need configure the parallel network reverse device, and output and the synchronous AC energy of little electric network state are to the little electrical network of community-level, and the energy storage switch-side need configure two-way inverter and charge-discharge controller.
When being designed to dc bus, the little electrical network of community-level is dc bus, then the point of common coupling place configures the parallel network reverse device, little electrical network bus of the little electrical network of user class also is dc bus, the on-load switch side need configure common inverter, the mains switch side needs the configuration voltages stabilizing arrangement, and to follow the tracks of the voltage on the little electrical network bus of sync community level, the energy storage switch-side need configure charge-discharge controller.
Specifically:
One, alone family exchanges little electric net device
Basic structure comprises the operate outside environment---public power distribution network, be provided with the little electrical network of community-level, the little electrical network of user class, point of common coupling, conventional load, compatible load, distribution power and energy storage device, and the little electrical network of community-level is ac bus;
Its annexation is:
The little electrical network of community-level is connected with public power distribution network by point of common coupling;
The little electrical network of user class is comprised of little electrical network bus, power distribution network bus, on-load switch, mains switch, energy storage switch, little power network switch and power distribution network switch, and little electrical network bus is ac bus;
Little electrical network bus is connected by the little electrical network of little power network switch and community-level, and the power distribution network bus is connected with public power distribution network by the power distribution network switch;
Conventional load is connected with public power distribution network, compatible load is connected with little electrical network bus or power distribution network bus by on-load switch, distribution power is connected with little electrical network bus by mains switch, and energy storage device is connected with little electrical network bus or power distribution network bus by energy storage switch 140.
Two, alone family DC micro-electric net arrangement
The basic structure of alone family DC micro-electric net arrangement is similar with the basic structure that alone family exchanges little electric net device, and the little electrical network of community-level is dc bus, and little electrical network bus is dc bus.
Basic structure comprises the operate outside environment---public power distribution network; Be provided with the little electrical network of community-level, the little electrical network of user class, point of common coupling, conventional load, compatible load, distribution power and energy storage device, the little electrical network of community-level is dc bus;
Its annexation is:
The little electrical network of community-level is connected with public power distribution network by point of common coupling;
The little electrical network of user class is comprised of little electrical network bus, power distribution network bus, on-load switch, mains switch, energy storage switch, little power network switch and power distribution network switch, and little electrical network bus is dc bus;
Little electrical network bus is connected by the little electrical network of little power network switch and community-level, and the power distribution network bus is connected with public power distribution network by the power distribution network switch;
Conventional load is connected with public power distribution network, compatible load is connected with little electrical network bus or power distribution network bus by on-load switch, distribution power is connected with little electrical network bus by mains switch, and energy storage device is connected with little electrical network bus or power distribution network bus by the energy storage switch.
Compared with prior art, the utlity model has following advantage and good effect:
1, the user can select operational mode to the operation of the own little electrical network of user class;
2, little power system operating mode is flexible, can realize the little electrical network independent operating of user class, the operation of the little grid network of community-level, and community's distributed energy send the multiple operational mode such as electric energy to power distribution network is counter;
3, distributed energy is produced on the spot as much as possible on the spot and used, avoid as much as possible the conveying of long distance and loss and the extra cost that energy storage brings;
4, in the situation that does not increase too much quality of power supply adjustment and control appliance, the mode of classed load can so that distributed energy utilized as much as possible.
The utility model is applicable to use photovoltaic or wind light mutual complementing equipment to carry out little electrical network networking structure of the terminal use of distributed power generation.
Description of drawings
Fig. 1 is that alone family exchanges little electric net device basic structure block diagram;
Fig. 2 is that alone family exchanges little electric net device independent operation mode block diagram;
Fig. 3 is that alone family exchanges little electric net device to the anti-electric energy operational mode block diagram of sending of public power distribution network;
Fig. 4 is that the multi-user exchanges the little electrical network 800 networking operation mode configuration block diagrams of little electric net device community-level;
Fig. 5 is that the multi-user exchanges the little electrical network of little electric net device user class to the anti-power mode block diagram of sending of public power distribution network;
Fig. 6 is alone family DC micro-electric net arrangement basic structure block diagram;
Fig. 7 is alone family DC micro-electric net arrangement independent operation mode block diagram;
Fig. 8 is that alone family DC micro-electric net arrangement is to the anti-electric energy operational mode block diagram of sending of public power distribution network;
Fig. 9 is the little electrical network 800 networking operation mode configuration block diagrams of multi-user's DC micro-electric net arrangement community-level;
Figure 10 is that the little electrical network of multi-user's DC micro-electric net arrangement user class is to the anti-power mode block diagram of sending of public power distribution network;
Wherein:
The little electrical network of 100-user class,
The little electrical network bus of 110a-,
110b-power distribution network bus,
The 120-on-load switch;
The 130-mains switch;
140-energy storage switch;
150-little power network switch;
160-power distribution network switch;
700-point of common coupling;
The little electrical network of 800-community-level;
900-public power distribution network;
Lr-conventional load; Lc-compatible load; G-distribution power; Ce-energy storage device.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, alone family exchanges little electric net device
1, basic structure
Such as Fig. 1, alone family exchanges little electric net device and comprises the operate outside environment---public power distribution network 900, be provided with the little electrical network 800 of community-level, the little electrical network 100 of user class, point of common coupling 700, conventional load Lr, compatible load Lc, distribution power G and energy storage device Ce, the little electrical network 800 of community-level is ac bus;
Its annexation is:
The little electrical network 800 of community-level is connected with public power distribution network 900 by point of common coupling 700;
The little electrical network 100 of user class is comprised of little electrical network bus 110a, power distribution network bus 110b, on-load switch 120, mains switch 130, energy storage switch 140, little power network switch 150 and power distribution network switch 160, and little electrical network bus 110a is ac bus;
Little electrical network bus 110a is connected by the little electrical network 800 of little power network switch 150 and community-level, power distribution network bus 110b by power distribution network switch 160 with join public power distribution network 900 and be connected;
Conventional load Lr is connected with public power distribution network 900, compatible load Lc is connected with little electrical network bus 110a or power distribution network bus 110b by on-load switch 120, distribution power G is connected with little electrical network bus 110a by mains switch 130, and energy storage device Ce is connected with little electrical network bus 110a or power distribution network bus 110b by energy storage switch 140.
2, functional part
1) public power distribution network 900
2) the little electrical network 800 of community-level
The little electrical network 800 of community-level is the points of common connection that connect the little electrical network 100 of each user class in the community.
3) the little electrical network 100 of user class
1. little electrical network bus 110a
Little electrical network bus 110a is the little electrical network bus that is connected with the little electrical network 800 of community-level, be responsible for subscriber equipment be connected with community-level electrical network 800 in the middle of connect.
2. power distribution network bus 110b
Power distribution network bus 110b is the little electrical network bus that is connected with power distribution network 900, and the user obtains electric energy by this bus from power distribution network 900.
3. on-load switch 120
On-load switch 120 is comprised of interconnective switch 121 and stable-pressure device 122;
Described switch 121 is mains switches of a kind of single-pole double throw;
Described stable-pressure device 122 is AC stabilizer, and matured product is arranged.
4. mains switch 130
Mains switch 130 is comprised of interconnective switch 131 and DC/AC device 132;
Described switch 131 is mains switches of a kind of single-pole single-throw(SPST;
Described DC/AC device 132 is Generation Control and inverter, and matured product is arranged.
5. the energy storage switch 140
Described switch 141 is mains switches of a kind of single-pole double throw;
Described inverter 142 is two-way inversion charge-discharge controller, and matured product is arranged.
6. little power network switch 150 mains switch that is single-pole single-throw(SPSTs.
7. power distribution network switch 160 is mains switches of single-pole single-throw(SPST.
4) point of common coupling 700
Point of common coupling 700 is comprised of interconnective switch 710 and grid-connecting apparatus 720;
Described switch is a kind of mains switch;
Described grid-connecting apparatus 720 is that a kind of adjusting and voltage on line side, frequency and phase place satisfy the condition that is incorporated into the power networks, and control switch closed device whether, and matured product is arranged.
5) conventional load Lr
The conventional load Lr load that to be the user have relatively high expectations for the quality of power supply and power supply reliability comprises refrigeration plant, long-time running equipment etc.
6) compatible equipment Lc
Compatible equipment Lc be the user for the quality of power supply and the less demanding load of power supply reliability, comprise the charging device of electronic equipment and electric heater unit etc.
7) distributed power source G
Distributed power source G is user's distributed power generation equipment, such as photovoltaic module (photovoltaic cell and electricity generating controller) or wind light mutual complementing assembly (wind-solar hybrid generator and electricity generating controller), matured product is arranged, and what produce is direct current energy.
8) energy storage device Ce
Energy storage device Ce is the equipment that the user is used for storage of electrical energy, is used for providing when the installation's power source undersupply reserve electric energy, such as storage battery etc., matured product is arranged.
3, operational mode
1) alone family exchanges little electric net device independent operation mode
Such as Fig. 2, under this kind operational mode, little power network switch 150 is disconnected, make little electrical network 800 isolation of the little electrical network 100 of user class and community-level; Power distribution network switch 160 closures make power distribution network bus 110b charged; Mains switch 130 closures can be powered to the little electrical network 100 of user class distribution power; Compatible load Lc is connected with little electrical network bus 110a by on-load switch 120; Point of common coupling 710 is disconnected, the little electrical network 800 of community-level is not exerted an influence to power distribution network 900; Energy storage device Ce is connected with little electrical network bus 110a by energy storage switch 140, discharges and recharges as the energy-storage travelling wave tube that installs.
Under this kind operational mode, its concrete annexation is:
Conventional load Lr is connected with public power distribution network 900; Power distribution network bus 110b is connected with public power distribution network 900; Compatible load Lc, stable-pressure device 122 and the electrical network bus 110a of being connected connect successively; Distribution power G, DC/AC conversion equipment 132 and the electrical network bus 110a of being connected connect successively; Energy storage device Ce, inverter 142 and the electrical network bus 110a of being connected connect successively; The switch 710 that is incorporated into the power networks disconnects.
Under this kind operational mode, its operation principle is:
When the distribution power G in this device surpassed the load of compatible load Lc, control distribution power G can reduce to exert oneself with the matched load requirement; And distribution power G then switches to on-load switch 120 power distribution network bus 110b when being not enough to bear the load of compatible load Lc; Energy storage device Ce can discharge electric energy in device generated output deficiency, at the device generated output storage of electrical energy remaining the time is arranged, to reach the effect of stabilizing arrangement; Energy storage device Ce both can charge by little electrical network bus 110a, also can be in the situation that distribution power G deficiency is passed through power distribution network bus 110b charging.
2) alone family exchanges little electric net device to the anti-electric energy operational mode of sending of public power distribution network
Such as Fig. 3, under this kind operational mode, little power network switch 150 and power distribution network switch 160 are all closed; Distribution power G is connected with little electrical network bus 110a by mains switch 130, powers to the little electrical network 800 of community-level by little power network switch 150 again, again by point of common coupling 700 adjustment of being incorporated into the power networks, to the power distribution network 900 anti-electric energy that send; Compatible load Lc to power distribution network bus 110b, powers by on-load switch 120 via power distribution network switch 160 more then by power distribution network 900; Energy storage this moment switch 140 is in off-state, avoids the characteristic variations of distributed energy storage that public power distribution network 900 is exerted an influence.
Under this kind operational mode, its concrete annexation is:
Conventional load Lr is connected with public power distribution network 900; Power distribution network bus 110b is connected with public power distribution network 900, and little electrical network bus 110a is connected with the little electrical network 800 of community-level; Compatible load Lc, stable-pressure device 122 are connected with power distribution network bus 110b and are connected; Distributed power source G, DC/AC conversion equipment 132 and the electrical network bus 110a of being connected connect successively; Energy storage device Ce and inverter 142 disconnect with little electrical network bus 110a; The little electrical network 800 of community-level, grid-connecting apparatus 720, be incorporated into the power networks switch 710 be connected power distribution network 900 and connect successively.
Two, the multi-user exchanges little electric net device
1, basic structure
Such as Fig. 4, the multi-user exchanges little electric net device and comprises that N alone family exchanges little electric net device, and N is natural number (N generally is not more than the sum of community's power consumer); Share public power distribution network 900, the little electrical network 800 of community-level and point of common coupling 700.
2, functional part
It is the same that applied environment and each functional part and above-mentioned alone family exchange little electric net device.
3, operational mode
The user can select independent operating or add little electrical network 800 operations of community-level.
1) the little electrical network n-100 of certain customers' level independent operating
Selecting the user's of independent operating set is n, and it is the same that the situation during the little electrical network n-100 of user class independent operating and above-mentioned alone family exchange little electric net device.
2) the little electrical network 800 networking operation patterns of community-level
Selecting the user's of the little electrical network of adding community-level set is n, little power network switch n-150 of each on-line customer is closed, little electrical network bus n-110a is interconnected by the little electrical network 800 of community-level, and power distribution network switch n-160 closure is with the stand-by power supply of power distribution network 900 as compatible load.
Under this kind operational mode, its concrete annexation is:
Such as Fig. 4, all networking operation users' distributed power source n-G, DC/AC device n-132 be connected electrical network bus n-110a and connect successively; All networking operation users' compatible load n-Lc, stable-pressure device n-122 be connected electrical network bus n-110a and connect successively; All networking operation users' energy storage device n-Ce, inverter n-142 be connected electrical network bus n-110a and connect successively; Little electrical network bus n-110a is connected with the little electrical network 800 of community-level, and power distribution network bus n-110b is connected with public power distribution network 900; The switch 710 that is incorporated into the power networks disconnects.
Under this kind operational mode, its operation principle is:
All networking operation users' distribution power n-G follows the tracks of power adjustments according to the parameter of setting, and guarantees that busbar voltage is stable.When situation about can't self regulate the little electrical network of community-level 800 inside occurring, can make device stable by switchable load and power supply.Particularly, when the power of the little electrical network of community-level 800 inside is not enough, can select energy storage device n-Ce discharge to replenish; If in the time of still can't satisfying stability requirement, select that fractional load is switched to public power distribution network 900 and power, thereby make device stable; When the power of the little electrical network of community-level 800 inside is superfluous, can select surplus power is charged to energy storage device n-Ce, in the time of still can't satisfying stability requirement, select the excision with part distribution power n-G, thereby make device stable.
3) the little electrical network of user class is to the anti-power mode of sending of public power distribution network
Such as Fig. 5, under this kind operational mode, little power network switch n-150 of all networking operation users is closed, and little electrical network bus n-110a is interconnected by the little electrical network bus 800 of community-level; Power distribution network switch n-160 closure makes power distribution network 900 as the power supply of compatible load n-Lc.
The multi-user exchanges little electric net device and comprises that N alone family exchanges little electric net device, and N is natural number; Share public power distribution network 900, the little electrical network 800 of community-level and point of common coupling 700.
Under this kind operational mode, its concrete annexation is:
All networking operation users' distribution power n-G, DC/AC device n-132 be connected electrical network bus n-110a and connect successively; All networking operation users' compatible load n-Lc, stable-pressure device n-122 is connected with power distribution network bus n-110b and connected; Little electrical network bus n-110a is connected with the little electrical network 800 of community-level, and power distribution network bus n-110b is connected with public power distribution network 900; Switch 710 closures are incorporated into the power networks; Energy storage device n-Ce and inverter n-142 disconnect with device.
Under this kind operational mode, its operation principle is:
Networking operation user's mains switch n-130 is closed, and distributed power source n-G is connected to the little electrical network 800 of community-level by mains switch n-130 and little electrical network bus n-110a, is connected with power distribution network by point of common coupling 700, to the anti-electric energy that send of power distribution network; Energy storage switch n-140 disconnects, and avoids affecting device stability; Compatible load Lc is connected with power distribution network bus n-110b by on-load switch n-120 respectively, obtains electric energy from power distribution network.
Three, alone family DC micro-electric net arrangement
1, basic structure
Such as Fig. 6, the basic structure of alone family DC micro-electric net arrangement is similar with the basic structure that alone family exchanges little electric net device, and the little electrical network 800 of community-level is dc bus, and little electrical network bus 110a is dc bus.
2, functional part
It is similar that alone family DC micro-electric net arrangement and alone family exchange little electric net device.
1) in the little electrical network 100 of its user class: (what list below is difference, and identical does not repeat.）
1. on-load switch 120
On-load switch 120 is comprised of interconnective switch 121 and inverter 122;
Described switch 121 is mains switches of a kind of single-pole double throw;
Described inverter 122 is common single-phase inversion device, and matured product is arranged.
2. mains switch 130
Mains switch 130 is comprised of interconnective switch 131 and stable-pressure device 132;
Described switch 131 is mains switches of a kind of single-pole single-throw(SPST;
Described stable-pressure device 132 is Generation Control and voltage regulating device, and matured product is arranged.
3. the energy storage switch 140
Described switch 141 is mains switches of a kind of single-pole double throw;
Described inverter 142 has matured product for discharging and recharging control and voltage regulating device.
2) point of common coupling 700
Point of common coupling 700 is comprised of interconnective switch 710 and inverter 720;
Described switch is a kind of mains switch;
Described inverter 720 be a kind of with dc inversion for exchanging and regulation voltage, frequency and phase place satisfy the condition that is incorporated into the power networks, and control switch closed device whether has matured product.
3, operational mode
1) alone family DC micro-electric net arrangement independent operation mode
Such as Fig. 7, its operational mode exchanges little electrical network independent operation mode with alone family similar;
Specifically, compatible load Lc, inverter 122 and the electrical network bus 110a of being connected connect successively; Distribution power G, stable-pressure device 132 and the electrical network bus 110a of being connected connect successively; Energy storage device Ce, stable-pressure device 142 and the electrical network bus 110a of being connected connect successively, and the switch 710 that is incorporated into the power networks disconnects.
2) alone family DC micro-electric net arrangement is to the anti-electric energy operational mode of sending of public power distribution network
Such as Fig. 8, its operational mode exchanges little electrical network with alone family similar to the anti-electric energy operational mode of sending of public power distribution network;
Specifically, compatible load Lc, inverter 122 are connected with power distribution network bus 110b and are connected; Distribution power G, stable-pressure device 132 and the electrical network bus 110a of being connected connect successively; Energy storage device Ce, stable-pressure device 142 and little electrical network bus 110a disconnect; The little electrical network 800 of community-level, inverter 720, be incorporated into the power networks switch 710 be connected power distribution network 900 and connect successively.
Four, multi-user's DC micro-electric net arrangement
1, basic structure
Such as Fig. 9, multi-user's DC micro-electric net arrangement exchanges little electric net device with the multi-user similar;
Specifically, the multi-user exchanges little electric net device and comprises that N alone family exchanges little electric net device, and N is natural number; Share public power distribution network 900, the little electrical network 800 of community-level and point of common coupling 700.
Conventional load Lr is connected with public power distribution network 900; Power distribution network bus 110b is connected with public power distribution network 900; Little electrical network bus 110a is connected with the little electrical network 800 of community-level; Compatible load Lc, inverter 122 are connected with power distribution network bus 110b and are connected; Distribution power G, stable-pressure device 132 and the electrical network bus 110a of being connected connect successively; Energy storage device Ce, stable-pressure device 142 are connected successively with little electrical network bus 110a.
2, functional part
Applied environment and each functional part are the same with above-mentioned alone family DC micro-electric net arrangement.
3, operational mode
The user can select independent operating or add little electrical network 800 operations of community-level.
1) the little electrical network n-100 of certain customers' level independent operating
Situation during the little electrical network n-100 of certain customers' level independent operating is the same with above-mentioned alone family DC micro-electric net arrangement.
2) the little electrical network 800 networking operation patterns of community-level
It is similar that its operational mode and above-mentioned multi-user exchange little electrical network, such as Fig. 9.
Its concrete annexation is: all networking operation users' distributed power source n-G, stable-pressure device n-132 be connected electrical network bus n-110a and connect successively; All networking operation users' compatible load n-Lc, inverter n-122 be connected electrical network bus n-110a and connect successively; All networking operation users' energy storage device n-Ce, stable-pressure device n-142 be connected electrical network bus n-110a and connect successively; Little electrical network bus n-110a is connected with the little electrical network 800 of community-level, and power distribution network bus n-110b is connected with public power distribution network 900; The switch 710 that is incorporated into the power networks disconnects.
3) the little electrical network of user class is to the anti-power mode of sending of public power distribution network
It is similar that its operational mode and above-mentioned multi-user exchange little electrical network, such as Figure 10.
Under this kind operational mode, its concrete annexation is:
All networking operation users' distribution power n-G, stable-pressure device n-132 be connected electrical network bus n-110a and connect successively; All networking operation users' compatible load n-Lc, inverter n-122 is connected with power distribution network bus n-110b and connected; Little electrical network bus n-110a is connected with the little electrical network 800 of community-level, and power distribution network bus n-110b is connected with public power distribution network 900; Switch 710 closures are incorporated into the power networks; Energy storage device n-Ce and stable-pressure device n-142 disconnect with device.
Claims (10)
1. the little electrical network network device of the classification based on the terminal use comprises that a kind of alone family exchanges little electric net device, and its operate outside environment---public power distribution network (900) is characterized in that:
Be provided with the little electrical network of community-level (800), the little electrical network of user class (100), point of common coupling (700), conventional load (Lr), compatible load (Lc), distribution power (G) and energy storage device (Ce), the little electrical network of community-level (800) is ac bus;
Its annexation is:
The little electrical network of community-level (800) is connected with public power distribution network (900) by point of common coupling (700);
The little electrical network of user class (100) is comprised of little electrical network bus (110a), power distribution network bus (110b), on-load switch (120), mains switch (130), energy storage switch (140), little power network switch (150) and power distribution network switch (160), and little electrical network bus (110a) is ac bus;
Little electrical network bus (110a) is connected with the little electrical network of community-level (800) by little power network switch (150), and power distribution network bus (110b) is connected with public power distribution network (900) by power distribution network switch (160);
Conventional load (Lr) is connected with public power distribution network (900), compatible load (Lc) is connected with little electrical network bus (110a) or power distribution network bus (110b) by on-load switch (120), distribution power (G) is connected with little electrical network bus (110a) by mains switch (130), and energy storage device (Ce) is connected with little electrical network bus (110a) or power distribution network bus (110b) by energy storage switch (140).
2. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 1, it is characterized in that independent operation mode:
Conventional load (Lr) is connected with public power distribution network (900); Power distribution network bus (110b) is connected with public power distribution network (900); Compatible load (Lc), stable-pressure device (122) and the electrical network bus (110a) of being connected connect successively; Distribution power (G), DC/AC conversion equipment (132) and the electrical network bus (110a) of being connected connect successively; Energy storage device (Ce), inverter (142) and the electrical network bus (110a) of being connected connect successively.
3. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 1, it is characterized in that to the anti-electric energy operational mode of sending of public power distribution network:
Conventional load (Lr) is connected with public power distribution network (900); Power distribution network bus (110b) is connected with public power distribution network (900), and little electrical network bus (110a) is connected with the little electrical network of community-level (800); Compatible load (Lc), stable-pressure device (122) are connected 110b with the power distribution network bus) successively connection; Distributed power source (G), DC/AC conversion equipment (132) and the electrical network bus (110a) of being connected connect successively; Energy storage device (Ce) and inverter (142) disconnect with little electrical network bus (110a).
4. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 1, it is characterized in that the multi-user exchanges the little electrical network of little electric net device community-level (800) networking operation pattern:
Comprise that N alone family exchanges little electric net device, N is natural number; Share public power distribution network (900), the little electrical network of community-level (800) and point of common coupling (700);
All networking operation users' distribution power (n-G), DC/AC device (n-132) and the electrical network bus (n-110a) of being connected connect successively; All networking operation users' compatible load (n-Lc), stable-pressure device (n-122) and the electrical network bus (n-110a) of being connected connect successively; All networking operation users' energy storage device (n-Ce), inverter (n-142) and the electrical network bus (n-110a) of being connected connect successively; Little electrical network bus (n-110a) is connected with the little electrical network of community-level (800), and power distribution network bus (n-110b) is connected with public power distribution network (900); The switch (710) that is incorporated into the power networks disconnects.
5. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 1, it is characterized in that the multi-user exchanges the little electrical network of little electric net device user class (100) to the anti-power mode of sending of public power distribution network:
Comprise that N alone family exchanges little electric net device, N is natural number; Public power distribution network (900), the little electrical network of community-level (800) and point of common coupling (700);
All networking operation users' distribution power (n-G), DC/AC device (n-132) and the electrical network bus (n-110a) of being connected connect successively; All networking operation users' compatible load (n-Lc), stable-pressure device (n-122) are connected n-110b with the power distribution network bus) connect successively; Little electrical network bus (n-110a) is connected with the little electrical network of community-level (800), and power distribution network bus (n-110b) is connected with public power distribution network (900); Switch (710) closure is incorporated into the power networks.
6. the little electrical network network device of the classification based on the terminal use comprises a kind of alone family DC micro-electric net arrangement, and the operate outside environment---public power distribution network (900) is characterized in that:
Be provided with the little electrical network of community-level (800), the little electrical network of user class (100), point of common coupling (700), conventional load (Lr), compatible load (Lc), distribution power (G) and energy storage device (Ce), the little electrical network of community-level (800) is dc bus;
Its annexation is:
The little electrical network of community-level (800) is connected with public power distribution network (900) by point of common coupling (700); The little electrical network of user class (100) is comprised of little electrical network bus (110a), power distribution network bus (110b), on-load switch (120), mains switch (130), energy storage switch (140), little power network switch (150) and power distribution network switch (160), and little electrical network bus (110a) is dc bus;
Little electrical network bus (110a) is connected with the little electrical network of community-level (800) by little power network switch (150), and power distribution network bus (110b) is connected with public power distribution network (900) by power distribution network switch (160);
Conventional load (Lr) is connected with public power distribution network (900), compatible load (Lc) is connected with little electrical network bus (110a) or power distribution network bus (110b) by on-load switch (120), distribution power (G) is connected with little electrical network bus (110a) by mains switch (130), and energy storage device (Ce) is connected with little electrical network bus (110a) or power distribution network bus (110b) by energy storage switch (140).
7. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 6, it is characterized in that independent operation mode:
Conventional load (Lr) is connected with public power distribution network (900); Power distribution network bus (110b) is connected with public power distribution network (900); Compatible load (Lc), inverter (122) and the electrical network bus (110a) of being connected connect successively; Distribution power (G), stable-pressure device (132) and the electrical network bus (110a) of being connected connect successively; Energy storage device (Ce), stable-pressure device (142) and the electrical network bus (110a) of being connected connect successively, and the switch that is incorporated into the power networks (710) disconnects.
8. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 6, it is characterized in that to the anti-electric energy operational mode of sending of public power distribution network:
Conventional load Lr is connected with public power distribution network (900); Power distribution network bus (110b) is connected with public power distribution network (900); Little electrical network bus (110a) is connected with the little electrical network of community-level (800); Compatible load (Lc), inverter (122) are connected 110b with the power distribution network bus) successively connection; Distribution power (G), stable-pressure device (132) and the electrical network bus (110a) of being connected connect successively; Energy storage device (Ce) and stable-pressure device (142) disconnect with little electrical network bus (110a).
9. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 6, it is characterized in that the multi-user exchanges the little electrical network of little electric net device community-level (800) networking operation pattern:
Comprise that N alone family exchanges little electric net device, N is natural number; Public power distribution network (900), the little electrical network of community-level (800) and point of common coupling (700);
All networking operation users' distribution power (n-G), stable-pressure device (n-132) and the electrical network bus (n-110a) of being connected connect successively; All networking operation users' compatible load (n-Lc), inverter (n-122) and the electrical network bus (n-110a) of being connected connect successively; All networking operation users' energy storage device (n-Ce), stable-pressure device (n-142) and the electrical network bus (n-110a) of being connected connect successively; Little electrical network bus (n-110a) is connected with the little electrical network of community-level (800), and power distribution network bus (n-110b) is connected with public power distribution network (900); The switch (710) that is incorporated into the power networks disconnects.
10. based on the little electrical network network device of a kind of classification based on the terminal use claimed in claim 6, it is characterized in that the multi-user exchanges the little electrical network of little electric net device user class (100) to the anti-power mode of sending of public power distribution network:
Comprise that N alone family exchanges little electric net device, N is natural number; Share public power distribution network (900), the little electrical network of community-level (800) and point of common coupling (700);
All networking operation users' distribution power (n-G), stable-pressure device (n-132) and the electrical network bus (n-110a) of being connected connect successively; All networking operation users' compatible load (n-Lc), inverter (n-122) are connected n-110b with the power distribution network bus) connect successively; Little electrical network bus (n-110a) is connected with the little electrical network of community-level (800), and power distribution network bus (n-110b) is connected with public power distribution network (900); Switch (710) closure is incorporated into the power networks.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103762587A (en) * | 2014-01-02 | 2014-04-30 | 上海电力学院 | Optimized networking method of distributed power supply system end users |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103997055A (en) * | 2013-02-16 | 2014-08-20 | 周锡卫 | Piconet system for constructing efficient micro grid |
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| CN103414215A (en) * | 2013-09-10 | 2013-11-27 | 南车株洲电力机车研究所有限公司 | Distributed power supply system |
| CN103762587A (en) * | 2014-01-02 | 2014-04-30 | 上海电力学院 | Optimized networking method of distributed power supply system end users |
| CN110190626A (en) * | 2019-06-03 | 2019-08-30 | 合肥工业大学 | A kind of method and apparatus of electric car optimization charging |
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