CN103904684A - Micro-grid control system and a new energy recycling system - Google Patents
Micro-grid control system and a new energy recycling system Download PDFInfo
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Abstract
The invention provides a micro-grid control system. The micro-grid control system comprises a micro-grid control cabinet, a master control cabinet, a measurement and control cabinet and a micro-grid management module, wherein the micro-grid control cabinet is respectively and electrically connected with a power generation module and an energy storage module and used for receiving and collecting electric energy of one or more power generation modules and managing storage and release of electric energy of the energy storage module; the master control cabinet and the measurement and control cabinet are used for comprehensively monitoring the operating condition of primary equipment of the whole micro-grid, analyzing the operating condition of the micro-grid in real time, obtaining optimization and adjustment strategies of the whole micro-grid and quickly and automatically executing the optimization and adjustment strategies; the master control cabinet is electrically connected with the micro-grid control cabinet, the measurement and control cabinet is electrically connected with the master control cabinet, and the micro-grid management module is respectively and electrically connected with the micro-grid control cabinet, the master control cabinet and the measurement and control cabinet and is used for controlling and managing the micro-grid control cabinet, the master control cabinet and the measurement and control cabinet in a concentrated mode and coordinating operation of the power generation module, the energy storage module and an outer net. The invention further provides a new energy recycling system with the micro-grid control system.
Description
Technical field
The present invention relates to renewable and clean energy resource technical field, relate in particular to a kind of micro-grid control system and new forms of energy cyclic utilization system.
Background technology
The solar energy of existing field of traffic, Wind Power Utilization technology are to carry out on the spot energy storage by photovoltaic generation and wind power generation, the field of application still for be road both sides disperse power consumption equipment, for example road lighting and watch-dog.
This technology is simple collection and the utilization to solar energy and wind energy just, can only be for the distributed power supply of power consumption equipment on the spot, for charge station's system and communication system etc. comparatively concentrated load power supply can not offer help.
So China's field of traffic green energy resource utilance is very low, on traffic route, carries out energy-conservation taping the latent power and develop and have huge space with green energy resource.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, to provide a kind of micro-grid control system and new forms of energy cyclic utilization system, systematized management and solar energy and the wind energy of utilizing highway department to collect, raising green energy resource utilance.
According to one aspect of the invention, a kind of micro-grid control system is provided, comprises: micro-power grid control cabinet, is electrically connected with electricity generation module and energy-storage module respectively, for receiving and collect the electric energy of one or more electricity generation modules, and storage and the release of the electric energy of management energy-storage module; Master control cabinet and observing and controlling cabinet, for monitor the ruuning situation of whole micro-electrical network primary equipment comprehensively, the ruuning situation of the micro-electrical network of real-time analysis also obtains whole micro-network optimization and adjusts strategy fast automatic execution, wherein, master control cabinet is electrically connected with micro-power grid control cabinet, and observing and controlling cabinet is electrically connected with master control cabinet; Micro-administration of power networks module, is electrically connected with micro-power grid control cabinet, master control cabinet and observing and controlling cabinet respectively, concentrates micro-power grid control cabinet, master control cabinet and observing and controlling cabinet are carried out to control and management, is responsible for the co-ordination between electricity generation module, energy-storage module and outer net.
Optionally, micro-administration of power networks module is suitable for: by measurement, the external electrical network electric power demand forecasting of the analysis of user's side workload demand, energy-storage module power supply capacity and Generation Side power supply capacity, by grid-connected and from the energy management strategy of network operation, the micro-electrical network of United Dispatching and outer net electric power transfer, guarantee that micro-electrical network can automatically switch in net and grid-connected situation.
Optionally, master control cabinet comprises: micro-electrical network Centralized Controller, communication processor and switch.Communication processor gathers each unit module information, delivers to micro-electrical network Centralized Controller by switch.Micro-electrical network Centralized Controller is for monitor the ruuning situation of whole micro-electrical network primary equipment comprehensively, and the ruuning situation of the micro-electrical network of real-time analysis also obtains whole micro-network optimization and adjusts strategy fast automatic execution.
Optionally, observing and controlling cabinet comprises: micro-electrical network from net controller and load governor.Micro-electrical network also can monitor micro-electrical network points of common connection from net controller, is detected and is realized from net disconnection PCC point breaker automatically by isolated island, realizes the isolation of micro-electrical network and large electrical network, can auto-parallel in the time of large power system restoration power supply.Load governor is used for grid-connected unnecessary load or the generating equipment of the micro-electrical network of quick excision while net, the hair electric equilibrium that realizes fast and leave of leaving.
Optionally, micro-electrical network Centralized Controller, micro-electrical network the control strategy during micro-electrical network is incorporated into the power networks comprises from net controller: during being incorporated into the power networks, the generating of micro-electrical network self distributed power source only takies an electric part, Centralized Controller is in the time being incorporated into the power networks, real time computation system power difference, if and planning occurs from net, the plan of exerting oneself of each distributed power source and the switching plan of various loads, once micro-electrical network also detects that from net controller micro-electrical network is from net, micro-power grid control management system is carried out immediately and has been determined control plan, realize micro-electrical network off-grid transition.
Optionally, micro-electrical network Centralized Controller, micro-electrical network also comprise from the control strategy during network operation at micro-electrical network from net controller: during network operation, micro-electrical network also checks micro-mains frequency from the net controller moment, if frequency rises, the load that recovered part has been excised, if it is still too high that all loads all drop into frequency, adopt the measure of excision distributed power source or adjust distributed power source and exert oneself.If frequency drops to the minimum limit value of permission, continue excision remainder load by load governor, guarantee reliability and power supply quality in most important load power supply during net.
Optionally, in the time of excision load, by load significance level, first excise non-important load and cut again important load.
According to a further aspect of the present invention, provide a kind of new forms of energy cyclic utilization system, comprising: one or more electricity generation modules; Energy-storage module, the electric energy producing for storing electricity generation module; Micro-grid control system; With electricity consumption module, be electrically connected with observing and controlling cabinet and micro-administration of power networks module respectively, comprise load and external electrical network.
Optionally, electricity generation module comprises wind power generation module, wind power generation module comprises the more piece vertical axis aerogenerator that is arranged in highway centre, and more piece vertical axis aerogenerator top, middle part, bottom gather respectively the wind-force driving in the driving process of natural wind, oversize vehicle and dilly.
Optionally, described more piece vertical axis aerogenerator is: organize this type vertical axis aerogenerator of savart knob more and/or organize straight blade H type vertical axis aerogenerator more.
The invention has the advantages that: ensureing high speed highway and efficient along the line, under the prerequisite of safe operation, by the integrated application of multiple green energy resource technology, with freeway toll station/service area, Highways ' and vcehicular tunnel are for applying object, from green regenerative energy sources utilization, micro-electric network synthetic energy supply and monitoring, energy-conserving control technology, energy storage technology and the technical bottleneck of applying from aspect breakthrough impacts such as net power supply techniques, realize integrated application and the popularization of highway operation power-saving technology, promote highway towards resources conservation, the green energy resource highway target development of high-efficiency environment friendly.
Accompanying drawing explanation
Fig. 1 is the new forms of energy cyclic utilization system structural representation providing according to one embodiment of the invention;
Fig. 2 is the new forms of energy cyclic utilization system structural representation providing according to a further embodiment of the invention;
Fig. 3 is the energy-storage module structural representation providing according to a further embodiment of the invention;
Fig. 4-5th, this (Savonius) type vertical axis aerogenerator schematic diagram of savart knob;
Fig. 6-7th, straight blade H type vertical axis aerogenerator schematic diagram;
Fig. 8 is that the more piece vertical shaft fan providing is according to a further embodiment of the invention disposed and structural representation.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is described in more detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
new forms of energy cyclic utilization system
Inventor has proposed a kind of new forms of energy cyclic utilization system after deliberation, comprising: the complementing integrated street lamp illumination system of wind-light storage, photovoltaic generation, energy-storage system, micro-power grid control subsystem (being micro-grid control system).
Take the service area/toll zone/parking area of Highways ' etc. as core, utilize solar energy and the wind energy in building roof and vacant lot to build distributed photovoltaic power generation, wind power generation, concentrate the subsystems such as energy storage, provide supply of electric power in conjunction with externally fed power supply, emergency power diesel generation equipment etc., common formation new forms of energy cyclic utilization system is optimized operation under micro-power grid control management system United Dispatching.
New forms of energy cyclic utilization system can provide supply of electric power for service area or equipment along the line, also can access electrical network nearby, and the electric energy that green energy resource is sent is sent into electrical network.New forms of energy cyclic utilization system can the energy supply of comprehensive adjustment highway, improves interactive with network system, improves the comprehensive operation efficiency of the energy, reduces with can cost.
As shown in Figure 1, according to one embodiment of the invention, provide a kind of new forms of energy cyclic utilization system, comprising:
One or more electricity generation modules 11;
Energy-storage module 13, the electric energy producing for storing electricity generation module 11;
Micro-power grid control subsystem 12 (be micro-grid control system, be called for short micro-electrical network), comprising:
Micro-power grid control cabinet 122, is electrically connected/couples with electricity generation module 11 and energy-storage module 13 respectively, for receiving and collect the electric energy of one or more electricity generation modules 11, and storage and the release of the electric energy of management energy-storage module 13;
Micro-administration of power networks module 121, is electrically connected with micro-power grid control cabinet 122, master control cabinet 123 and observing and controlling cabinet 124 respectively, concentrates micro-power grid control cabinet, master control cabinet and observing and controlling cabinet are carried out to control and management;
As shown in Figure 2, according to a further embodiment of the invention, provide a kind of new forms of energy cyclic utilization system, comprising:
Be positioned at the electricity generation module of Generation Side, comprise wind power generation module and photovoltaic generating module;
Micro-power grid control subsystem, comprises micro-power grid control cabinet, micro-administration of power networks module, master control cabinet and observing and controlling cabinet;
Energy-storage module, comprises AC-DC conversion unit (PCS) and storage battery;
The electricity consumption module of user's side, comprises intelligent switchboard, load and external electrical network.
Wherein, micro-administration of power networks module is concentrated micro-power grid control cabinet, master control cabinet and observing and controlling cabinet is carried out to control and management, be responsible for the co-ordination between electricity generation module, energy-storage module and outer net, by measurement, the external electrical network electric power demand forecasting of the analysis of user's side workload demand, energy-storage module power supply capacity and Generation Side power supply capacity, by grid-connected and from the energy management strategy of network operation, the micro-electrical network of United Dispatching and outer net electric power transfer, guarantee that micro-electrical network can automatically switch in net and grid-connected situation, meet subscriber's side powered demand, maintain the safe operation of micro-electrical network.
Wind power generation module and photovoltaic generating module at Generation Side in parallel position, wherein, photovoltaic generation is to adopt solar panels to collect solar energy, converts solar energy into electrical energy, and converting direct-current power into alternating-current power is linked in micro-power grid control cabinet through header box and inverter; Wind power generation is to be generated electricity by controller of fan control vertical axis or other small-sized fans, is linked in micro-power grid control cabinet through fan converter.
The electricity consumption module of user's side comprises intelligent switchboard, load and external electrical network bus, in the time that user's side electrical energy demands changes, intelligent switchboard is according to the access of the outer network source of micro-administration of power networks subsystem instruction control, the maximized electric energy that utilizes existing photovoltaic generation and wind power generation to produce.
Storage battery is electrically connected with PCS, is the important component part of energy-storage module.Energy-storage module is used for realizing energy two-way exchange between battery and electrical network, can be operated in charge in batteries pattern and storage battery energy feedback grid pattern.As shown in Figure 3, storage battery, PCS, isolating transformer and micro-power grid control cabinet are electrically connected successively.
The electric current conductive process of new forms of energy cyclic utilization system be by the alternating current of wind power generation and photovoltaic generation through over commutation, store in storage battery, make wind-driven generator produce electric energy become chemical energy.Then by having the inverter of protective circuit, the chemical energy in storage battery is transformed into alternating current 220V, provides electric power to user's side, cannot guarantee the degree of its supply if user's side load increases to energy-storage system, system will be obtained electric energy from outer net.
micro-power grid control subsystem (being micro-grid control system)
As shown in Figure 1-2, micro-power grid control subsystem 12 comprises:
Micro-power grid control cabinet 122, is electrically connected/couples with electricity generation module 11 and energy-storage module 13 respectively, for receiving and collect the electric energy of one or more electricity generation modules 11, and storage and the release of the electric energy of management energy-storage module 13;
Micro-administration of power networks module 121, is electrically connected with micro-power grid control cabinet 122, master control cabinet 123 and observing and controlling cabinet 124 respectively, concentrates micro-power grid control cabinet, master control cabinet and observing and controlling cabinet are carried out to control and management.
According to one embodiment of the invention, master control cabinet (being micro-electrical network master control cabinet) comprising:
Micro-electrical network Centralized Controller;
Communication processor; With
Switch.
Wherein, communication processor gathers each unit module information; as information such as PCS, BMS (battery management system of storage battery), inverter, controller of fan, fan converter, table meter, protection, circuit breakers; deliver to micro-electrical network Centralized Controller by switch, monitor and regulate and control by micro-electrical network Centralized Controller.
Wherein, micro-electrical network Centralized Controller is the important device in micro-electrical network master control cabinet, it is a embedding electrical network main frame operator station of holding concurrently that declines, for monitor the ruuning situation of whole micro-electrical network primary equipment comprehensively, the ruuning situation of the micro-electrical network of real-time analysis also obtains whole micro-network optimization and adjusts strategy fast automatic execution, can be used as database server, be the core component of micro-power grid control subsystem simultaneously.
According to one embodiment of the invention, observing and controlling cabinet (being micro-electric network measuring and controlling cabinet) comprising:
Micro-electrical network from net controller; With
Load governor.
Wherein, micro-electrical network also can monitor micro-electrical network points of common connection from net controller, is detected and is realized from net disconnection PCC point breaker automatically by isolated island, realizes the isolation of micro-electrical network and large electrical network, can auto-parallel in the time of large power system restoration power supply.The automatism isolation when defencive function of this device outfit is simultaneously realized micro-electrical network internal fault and external fault, can be used as the system-level protection of whole micro-electrical network.
Wherein, load governor has from net connection to be cut, low frequency, low pressure, overfrequency, crosses pressure-controlled function, be mainly used in grid-connected unnecessary load or the generating equipment of the micro-electrical network of quick excision while net that leave, the hair electric equilibrium realizing fast and leave, during net, there is low frequency, low pressure off-load, machine is cut in overfrequency, and overfrequency or overvoltage off-the-line, by judging that the operational factor such as voltage, frequency realizes microgrid energy balance.
According to one embodiment of the invention, in master control cabinet and observing and controlling cabinet, micro-electrical network Centralized Controller, micro-electrical network and from net controller the various operational modes of micro-electrical network and micro-electrical network carry out and leave or from turn and time play an important role, be specifically described below.
1, the control strategy of micro-electrical network during being incorporated into the power networks
During being incorporated into the power networks, the generating of micro-electrical network self distributed power source only takies an electric part, for this situation, Centralized Controller in the time being incorporated into the power networks, real time computation system power difference, and if planning occur from net, the plan of exerting oneself of each distributed power source and the switching plan of various loads, once micro-electrical network also detects that from net controller micro-electrical network is from net, micro-power grid control management system is carried out immediately and has been determined control plan, realizes micro-electrical network off-grid transition.
2, micro-electrical network is from the control strategy during network operation
During network operation, micro-electrical network also checks micro-mains frequency from the net controller moment, if frequency rises, and the load that recovered part has been excised, if it is still too high that all loads all drop into frequency, adopt the measure of excision distributed power source or adjust distributed power source and exert oneself.If frequency drops to the minimum limit value of permission, continue excision remainder load by load governor, guarantee reliability and power supply quality in most important load power supply during net.
, first excise non-important load and cut again important load by load significance level in when load excision, the adjustment that distributed power source is exerted oneself, principle is the maximum output generating that preferentially guarantees regenerative resource, reaches micro-electrical network from the equilibrium of supply and demand target after net.
During network operation, after microgrid Centralized Controller detects that system power supply is recovered, micro-electrical network also detects to meet from net controller and issues grid-connected instruction when condition the same period and close PCC point-like electron switch, and micro-electrical network is incorporated into the power networks again.
According to one embodiment of the invention, the generating of micro-electrical network self distributed power source only takies an electric part, and other still will access to provide electric power by civil power.If civil power breaks down or other reasons disconnects (power failure), be exactly from net this time, at this moment will have diesel engine generator startup generating to guarantee the normal operation of some equipment.For example, micro-electrical network starts in voltage source V/F mode of operation at diesel engine generator during network operation, supports for ac bus provides power supply.
According to one embodiment of the invention, micro-power grid control cabinet comprises: measurement meter and control switch.
The electric energy that micro-power grid control cabinet has been mainly Generation Side photovoltaic generation and wind power generation collects, and the communication processor by master control cabinet in micro-power grid control subsystem gathers PCS, BMS information, deliver to micro-electrical network Centralized Controller through switch, management is storage and the release of electric energy to battery charging and discharging to complete PCS by micro-electrical network Centralized Controller.
New forms of energy cyclic utilization system is being equipped with after energy storage device, and new forms of energy are exerted oneself and the coordinated operation of energy storage device, the smoothly power curve of micro-grid system, the raising new forms of energy quality of power supply; New forms of energy cyclic utilization system is transferred to from network operation by grid-connected simultaneously, and energy-storage system is whole micro-grid system uninterrupted power supply as UPS back-up source.
According to one embodiment of the invention, in order to realize micro-power network safety operation, need to formulate correct micro-power grid control and energy management strategy, be described as follows:
1, distributed power source control
Distributed power source control adopts P/Q control model or maximal power tracing control model, realizes the maximization generating of regenerative resource in the time that electrical network normally moves, and realizes the adjustability of distributed power source generating.The control of this project distributed power supply comprises photovoltaic DC-to-AC converter, fan converter.
2, energy storage control
Energy storage controller PCS can be in P/Q control model in the time being incorporated into the power networks, dispatch its charging and discharging state by micro-administration of power networks unit by micro-electrical network Centralized Controller, after net, automatically switching to V/F control model, maintain micro-electrical network from net during voltage and frequency, energy storage control is realized by energy storage PCS.
3, micro-electrical network is monitored in real time
New forms of energy cyclic utilization system, by low pressure measurement and control unit, distributed electrical source inventer and from amount of information such as Real-time Collection analog quantity, switching value such as net controllers, completes the supervision of whole micro-operation of power networks operating mode.
4, voltage and idle adjusting
In the time that supply power voltage departs from allowed band and causes more serious power quality problem, voltage power-less control function is by regulating the idle output of the equipment such as each distributed power source, reactive-load compensator, guarantee that voltage is in acceptability limit, and realize the in-situ balancing of reactive power.
more piece vertical shaft fan
Further, inventor finds after deliberation, on highway, although natural physical features is open, natural wind is stronger, the wind energy that the car that prior art underusing is run at high speed on highway drives, has reduced the utilance of wind energy, varying in size of natural wind simultaneously, be easy to cause unit in sub-load running status, and distributed power supply easily cause storage battery electric energy to overflow, and is unfavorable for wind energy maximum using.
Owing to reckoning without the wind energy that in highway system, Vehicle Driving Cycle drives in prior art, cause wind energy utilization lower, inventor proposes:
Vertical shaft fan is carried out to more piece integration, be arranged in the middle isolation strip of highway, make full use of dealing run at high speed vehicle drive wind-force, because the direction of both sides, isolation strip Vehicle Driving Cycle on highway is just in time contrary, can provide wind energy to vertical shaft fan to greatest extent, can greatly increase the wind-driven generator oepration at full load time in the promotion that adds natural wind, improve wind energy utilization, increase unit utilization ratio.
According to the difference of the aerodynamic force that drives vertical axis aerogenerator to rotate, there are two kinds: savart knob this (Savonius) type vertical axis aerogenerator (also referred to as S type wind energy conversion system) and straight blade H type vertical axis aerogenerator.
This type vertical axis aerogenerator of savart knob, claims again S type wind energy conversion system.S type wind energy conversion system is mainly the resistance that utilizes air to produce, and promotes S type blade rotary, thereby drives rare earth permanent-magnetic generator generating to produce electric energy.
As shown in Fig. 4-5, this type vertical axis aerogenerator of savart knob generally includes semicircle Cylindrical Blade, brake units, the rare earth permanent-magnetic generator of two pieces of axis misalignment.Also useful 3 pieces of above often upper and lower overlapping multilayers of this wind energy conversion system, to improve power and to avoid starting dead band.Its advantage is that detent torque is large, under weak wind, easily starts.
H type vertical axis aerogenerator belongs to lift-type wind-driven generator, adopts aerodynamic principle, the lift acting that utilizes air to produce,
H type vertical axis aerogenerator comprises blade, brake units, rare earth permanent-magnetic generator.Be mainly with vertical line 3-5 blade, fix, connect by the wheel hub of 4 dihedrals or 5 angular shape the wind wheel that the connecting rod of blade forms, generated electricity by wind wheel drive rare earth permanent-magnetic generator.For example, as shown in Figure 6, H type vertical axis aerogenerator comprises 3 blades 011 and rotating shaft 012.
As shown in Figure 7, blade adopts the wing shape of aircraft, and the torque of making a concerted effort to form that air produces around blades flows promotes vane rotary.In the time that wind wheel rotates, it can not be subject to changing efficiency because of distortion.
According to one embodiment of the invention, in order to improve the utilance of wind energy in green energy resource highway, adopt vertical shaft fan as wind power plant, by installation site and the height of vertical shaft fan are rationally set in median, combine by more piece vertical shaft fan, making full use of the wind-force that on highway, the various vehicles of dealing size drive generates electricity, by micro-power grid control subsystem, all vertical shaft fans are concentrated to electric energy management simultaneously, reasonable arrangement Generation Side power supply capacity and user's side demand, maximize and promote efficiency.
As shown in Figure 8, three blade coaxial rotation of vertical axis aerogenerator, an item layer blade mainly gathers natural wind, intermediate blade gathers the wind-force driving in truck driving process, bottom blade gathers the wind-force driving in car and truck driving process simultaneously, three groups of blades act on raising generator speed simultaneously, increase energy output.
Should be noted that and understand, in the situation that not departing from the desired the spirit and scope of the present invention of accompanying claim, can make various modifications and improvement to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not subject to the restriction of given any specific exemplary teachings.
Claims (10)
1. a micro-grid control system, comprising:
Micro-power grid control cabinet, is electrically connected with electricity generation module and energy-storage module respectively, for receiving and collect the electric energy of one or more electricity generation modules, and storage and the release of the electric energy of management energy-storage module;
Master control cabinet and observing and controlling cabinet, for monitor the ruuning situation of whole micro-electrical network primary equipment comprehensively, the ruuning situation of the micro-electrical network of real-time analysis also obtains whole micro-network optimization and adjusts strategy fast automatic execution, wherein, master control cabinet is electrically connected with micro-power grid control cabinet, and observing and controlling cabinet is electrically connected with master control cabinet;
Micro-administration of power networks module, is electrically connected with micro-power grid control cabinet, master control cabinet and observing and controlling cabinet respectively, concentrates micro-power grid control cabinet, master control cabinet and observing and controlling cabinet are carried out to control and management, is responsible for the co-ordination between electricity generation module, energy-storage module and outer net.
2. micro-grid control system according to claim 1, wherein, micro-administration of power networks module is suitable for:
By measurement, the external electrical network electric power demand forecasting of the analysis of user's side workload demand, energy-storage module power supply capacity and Generation Side power supply capacity, by grid-connected and from the energy management strategy of network operation, the micro-electrical network of United Dispatching and outer net electric power transfer, guarantee that micro-electrical network can automatically switch in net and grid-connected situation.
3. micro-grid control system according to claim 1, wherein, master control cabinet comprises:
Micro-electrical network Centralized Controller;
Communication processor; With
Switch;
Wherein, communication processor gathers each unit module information, delivers to micro-electrical network Centralized Controller by switch;
Wherein, micro-electrical network Centralized Controller is for monitor the ruuning situation of whole micro-electrical network primary equipment comprehensively, and the ruuning situation of the micro-electrical network of real-time analysis also obtains whole micro-network optimization and adjusts strategy fast automatic execution.
4. micro-grid control system according to claim 3, wherein, observing and controlling cabinet comprises:
Micro-electrical network from net controller; With
Load governor;
Wherein, micro-electrical network also can monitor micro-electrical network points of common connection from net controller, is detected and is realized the point breaker from the automatic PCC of disconnection of net by isolated island, realizes the isolation of micro-electrical network and large electrical network, energy auto-parallel in the time of large power system restoration power supply;
Wherein, load governor is used for grid-connected unnecessary load or the generating equipment of the micro-electrical network of quick excision while net, the hair electric equilibrium that realizes fast and leave of leaving.
5. micro-grid control system according to claim 4, wherein, micro-electrical network Centralized Controller, micro-electrical network the control strategy during micro-electrical network is incorporated into the power networks comprises from net controller:
During being incorporated into the power networks, the generating of micro-electrical network self distributed power source only takies an electric part, Centralized Controller is in the time being incorporated into the power networks, real time computation system power difference, if and planning occurs from net, the plan of exerting oneself and the switching plan of various loads of each distributed power source, once micro-electrical network detect that from net controller micro-electrical network is from net, micro-power grid control management system is carried out immediately and has been determined control plan, realizes micro-electrical network off-grid transition.
6. micro-grid control system according to claim 4, wherein, micro-electrical network Centralized Controller, micro-electrical network also comprise from the control strategy during network operation at micro-electrical network from net controller:
During network operation, micro-electrical network also checks micro-mains frequency from the net controller moment, if frequency rises, and the load that recovered part has been excised, if it is still too high that all loads all drop into frequency, adopt the measure of excision distributed power source or adjust distributed power source and exert oneself; If frequency drops to the minimum limit value of permission, continue excision remainder load by load governor, guarantee reliability and power supply quality in most important load power supply during net.
7. micro-grid control system according to claim 6 wherein, by load significance level, first excises non-important load and cuts important load again in the time of excision load.
8. a new forms of energy cyclic utilization system, comprising:
One or more electricity generation modules;
Energy-storage module, the electric energy producing for storing electricity generation module;
Micro-grid control system as described in any one in claim 1-7; With
Electricity consumption module, is electrically connected with observing and controlling cabinet and micro-administration of power networks module respectively, comprises load and external electrical network.
9. new forms of energy cyclic utilization system according to claim 8, wherein, electricity generation module comprises wind power generation module, wind power generation module comprises the more piece vertical axis aerogenerator that is arranged in highway centre, and more piece vertical axis aerogenerator top, middle part, bottom gather respectively the wind-force driving in the driving process of natural wind, oversize vehicle and dilly.
10. new forms of energy cyclic utilization system according to claim 9, wherein, described more piece vertical axis aerogenerator is: organize this type vertical axis aerogenerator of savart knob more and/or organize straight blade H type vertical axis aerogenerator more.
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| CN104393602A (en) * | 2014-12-12 | 2015-03-04 | 新奥科技发展有限公司 | Adjusting method and device for distributed energy resource network |
| CN111355264A (en) * | 2020-04-02 | 2020-06-30 | 青岛中科福田科技有限公司 | New energy control system |
| CN113141054A (en) * | 2021-04-29 | 2021-07-20 | 西安热工研究院有限公司 | Novel heat exchange station of complementary power supply of scene |
| WO2022193725A1 (en) * | 2021-03-19 | 2022-09-22 | 阳光电源股份有限公司 | Wind energy storage integrated converter, converter, and multi-energy complementary energy system |
| CN116819355A (en) * | 2023-04-28 | 2023-09-29 | 广东恒翼能科技股份有限公司 | Energy-saving test system for direct-current bus of micro-grid at rear section of battery cell |
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| CN113141054A (en) * | 2021-04-29 | 2021-07-20 | 西安热工研究院有限公司 | Novel heat exchange station of complementary power supply of scene |
| CN116819355A (en) * | 2023-04-28 | 2023-09-29 | 广东恒翼能科技股份有限公司 | Energy-saving test system for direct-current bus of micro-grid at rear section of battery cell |
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