CN208078665U - Energy microgrid distributed power control system based on wireless sensor network - Google Patents
Energy microgrid distributed power control system based on wireless sensor network Download PDFInfo
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- CN208078665U CN208078665U CN201820659270.7U CN201820659270U CN208078665U CN 208078665 U CN208078665 U CN 208078665U CN 201820659270 U CN201820659270 U CN 201820659270U CN 208078665 U CN208078665 U CN 208078665U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/14—Energy storage units
Abstract
The energy microgrid distributed power control system based on wireless sensor network that the utility model discloses a kind of, including lower layer's energy transmission network and upper layer wireless sensor communication network；Lower layer's energy transmission network includes load and distributed generation resource, the controllable node is then used to collect the information such as power and the load of controlled distribution formula power supply and load corresponding to it, receives the information that controllable or half controllable node of surrounding is transmitted, and integrally carries out the coordination control of output power and load balance to system according to the information being collected into.The utility model is in the case where Guarantee control system stability is run by introducing wireless sensor network, with photovoltaic generation, wind-power electricity generation and battery energy storage device for main controll plant, and build the energy microgrid dcs based on wireless sensor network, make it is suitable for randomly topologically structured, and has high flexibility and expansibility.
Description
Technical field
The energy microgrid distributed power control system based on wireless sensor network that the utility model is related to a kind of.
Background technology
Coordination control is carried out to each distributed generation resource, energy storage device and load in energy microgrid, ensures system power balance
And power-sharing had both contributed to the efficient utilization of clean reproducible energy to ensure the voltage and frequency stabilization of energy microgrid,
Stability, reliability and the economy of energy microgrid at runtime can be improved again simultaneously.And traditional energy microgrid centralization control
System processed mainly controls equipment by wireline communication network, though certain control effect can be obtained, when the energy is micro-
When equipment in net is more and location distribution is wider, there is that reliability is relatively low, network complicates, construction cost is high and
The problems such as expansibility is poor, and when energy microgrid and communication network topology structure change, need to carry out weight to algorithm
New design, universality and flexibility also have to be strengthened.
Traditional centralized control system mutually conflicts with the essence of energy microgrid distributed power generation, when setting in energy microgrid
When standby more and location distribution is wider, centerized fusion there is reliabilities relatively low, network complicates, construction cost is high and
The problems such as expansibility is poor cannot agree with the distributed nature of energy microgrid.
The utility model designs combining with wireless sensor network a kind of around randomly topologically structured lower energy microgrid
Universal distributed power control system makes it have better flexibility, universality, expansibility and reliability.
Invention content
The shortcomings that in order to overcome the prior art, it is micro- that the utility model provides a kind of energy based on wireless sensor network
Net distributed power control system, in the case where Guarantee control system stability is run by introducing wireless sensor network,
With photovoltaic generation, wind-power electricity generation and battery energy storage device for main controll plant, and build the energy based on wireless sensor network
Source microgrid dcs, makes it is suitable for randomly topologically structured, and have high flexibility and expansibility.
Technical solution used by the utility model is：A kind of energy microgrid distribution work(based on wireless sensor network
Rate control system, including lower layer's energy transmission network and upper layer wireless sensor communication network；Lower layer's energy transmission network
Include controllable node and half controllable node including load and distributed generation resource, the upper layer wireless sensor communication network；It is described
Half controllable node is used to collect the power and information on load of the half controlled distribution formula power supply and load corresponding to it, and will be collected
To information pass to the controllable node of surrounding；The controllable node is used to collect the controlled distribution formula power supply corresponding to it and bears
The information that the power and information on load of load, controllable or half controllable node for receiving surrounding are transmitted, and according to the information pair being collected into
Distributed generation resource and load carry out the coordination control of output power and load balance.
Compared with prior art, the good effect of the utility model is：It is compared compared with energy microgrid control system, this reality
Has following advantage with novel：
1, the communication mode controlled as system using wireless sensor network, node location is flexible, adapts to arbitrary topology
Structure makes system have better flexibility and expansibility；
2, distributed real-time control is directly carried out by dividing equally to power-balance and reactive power, ensures the operation of energy microgrid
Electric voltage frequency keeps stablizing in the process, and system is made to have better stability and reliability；
3, wireless sensor network node can press data by compressed sensing algorithm before being transmitted to data
Contracting can effectively reduce transmitted data amount, reduce redundant data, reduce transmission delay, system is made to have better real-time and energy
Effect property.
Description of the drawings
The utility model will illustrate by example and with reference to the appended drawing, wherein：
Fig. 1 is the topological structure schematic diagram of the energy microgrid distributed power control system based on wireless sensor network；
Fig. 2 is the control flow chart of the energy microgrid distributed power control system based on wireless sensor network；
Fig. 3 is the signal processing comparison of compressed sensing and traditional sampling；
Fig. 4 is the data compression process of compressed sensing algorithm.
Specific implementation mode
As shown in Figure 1, in the present invention, energy microgrid of the structure based on wireless sensor network is double-deck distributed
Control system, wherein lower layer are energy transmission network, and upper layer is then that the wireless sensor being made of multiple sensor nodes is led to
Interrogate network.In understructure, rectangular representative load, circle represents distributed generation resource.In energy microgrid, such as accumulation power supply
The power supply that can directly control it belongs to controlled distribution formula power supply；Such as wind-power electricity generation and photovoltaic generation distributed power supply
By natural conditions influenced tool it is larger, have very strong randomness, can only be realized by way of controlling other controllable electric powers
To the equipment of the indirect control of such power supply, then belong to half controlled distribution formula power supply.Therefore, it in the communication network of upper layer, will adopt
The controllable node that corresponding controllable electric power is represented with diamond shape represents half controllable node of corresponding half controllable electric power using ellipse,
And each a node only corresponding distributed generation resource or load respectively in system.
In this double-deck control system, oval half controllable node will only collect half corresponding controlled distribution formula electricity
The power and information on load in source and load, and collected information is passed to the diamond shape node of surrounding, without to information into
Row processing, and half controllable node will not control power supply and load；And diamond shape controllable node not only collect it is corresponding
The power and information on load of controlled distribution formula power supply and load can also receive the data that half controllable node is passed over.Thereafter,
Diamond shape controllable node can carry out controllable and half controllable power supply and load according to the control method for the information and input being collected into
The coordination of output power and load balance controls.
The specific control flow of this control system is as shown in Figure 2：
Power-balance control mode：In energy microgrid, electric voltage frequency controls the accumulation power supply under (v/f controls) according to net
Instantaneous imbalance power adjusts its output power in network, to which maintenance voltage and frequency fluctuate within the allowable range.It therefore, can be with
By adjusting the mode of the output power of controllable electric power, to realize the Indirect method of double of controllable electric power output power.Follow this
The output power value of half controllable electric power is passed to corresponding half controllable node by a thinking by wireless sensor network node,
Half controllable node passes information to the controllable node of surrounding again.When energy microgrid emergent power fluctuates, controllable node
Real-time control accumulation power supply is carried out to instantaneous charge or discharge, half controllable node sends information to surrounding controllable node at this time,
Thereafter controllable node is adjusted the output power of controllable electric power according to received information, finally so that system reaches work(
Rate equilibrium state.
Reactive power divides equally control mode：In energy microgrid, reactive power is divided equally control process and is controlled with power-balance
Process is similar.Controllable and half controllable node first in wireless sensor network collects corresponding power supply reactive power information, and
Calculate reactive power output ratio；Thereafter, controllable and half controllable node is according to network topology structure of wireless sensor and surrounding section
Point exchanges the information of reactive power output ratio；Finally, control system believes collected local according to control law described previously
Breath is handled, and carries out coordination control to the idle output power of controllable electric power subsequent time according to result of calculation, to real
The reactive power of existing energy microgrid is divided equally.
Wireless sensor network node can compress data by compressed sensing algorithm before being transmitted to data,
Compressed sensing mode：Compressed sensing technology is sparse to original signal progress by sparse matrix, to reduce the dimension of signal, makes
It can collect the discrete sample of signal under conditions of much smaller than original signal nyquist sampling rate, to reach compression
Then the purpose of data accurately restores original signal when receiving by signal reconstruction algorithm reconstruction signal.Compression sensing reason
It improves the message capacity of whole network by change data acquisition mode by the limitation for breaching traditional Shannon's theorems, prolong
When and the problems such as the network survivability service life.Fig. 3 has annotated compressed sensing and traditional sampling in signal processing well
Difference, Fig. 4 are the data compression process of compressed sensing algorithm.
It is first sampled as can be seen that classical signal sampling process is signal, recycling some shift means, (such as Fourier becomes
Change) it calculates the sparsity of signal and carries out data compression, finally unzip it again；And compressed sensing sampling process is to adopt
Just original signal is compressed by signal sparse mode while sample, finally recycles signal reconstruction algorithm to realize original
The reconstruct of signal, that is, decompress.The energy consumption of node can not only be reduced using data compression technique in wireless sensor network,
The time delay of network communication can also be reduced to a certain extent simultaneously, network congestion is reduced, ensure the height of wireless sensor network
Effect, stable operation.
Claims (4)
1. a kind of energy microgrid distributed power control system based on wireless sensor network, it is characterised in that：Including lower layer
Energy transmission network and upper layer wireless sensor communication network；Lower layer's energy transmission network includes load and distributed electrical
Source, the upper layer wireless sensor communication network include controllable node and half controllable node；Half controllable node is for collecting
The power and information on load of half controlled distribution formula power supply and load corresponding to it, and collected information is passed into surrounding
Controllable node；The controllable node is used to collect power and the load letter of controlled distribution formula power supply and load corresponding to it
The information that breath, controllable or half controllable node for receiving surrounding are transmitted, and according to the information being collected into distributed generation resource and load
Carry out the coordination control of output power and load balance.
2. the energy microgrid distributed power control system according to claim 1 based on wireless sensor network, special
Sign is：The only corresponding one and half controlled distribution formula power supplys of each half controllable node and load；Each controllable node is only corresponding
One group of controlled distribution formula power supply and load.
3. the energy microgrid distributed power control system according to claim 1 based on wireless sensor network, special
Sign is：The controlled distribution formula power supply includes accumulation power supply.
4. the energy microgrid distributed power control system according to claim 1 based on wireless sensor network, special
Sign is：The half controlled distribution formula power supply includes wind-driven generator and photovoltaic generator.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365638A (en) * | 2018-05-04 | 2018-08-03 | 西南科技大学 | Energy microgrid distributed power control system based on wireless sensor network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365638A (en) * | 2018-05-04 | 2018-08-03 | 西南科技大学 | Energy microgrid distributed power control system based on wireless sensor network |
| CN108365638B (en) * | 2018-05-04 | 2023-06-16 | 西南科技大学 | Energy micro-grid distributed power control system based on wireless sensor network |
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