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CN104052159A - Energy management controller used for wind and light storage micro-grid system - Google Patents

Energy management controller used for wind and light storage micro-grid system Download PDF

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Publication number
CN104052159A
CN104052159A CN201410288149.4A CN201410288149A CN104052159A CN 104052159 A CN104052159 A CN 104052159A CN 201410288149 A CN201410288149 A CN 201410288149A CN 104052159 A CN104052159 A CN 104052159A
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China
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wind
power
grid
light storage
energy
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CN201410288149.4A
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CN104052159B (en
Inventor
刘征宇
田军
唐健
于海坤
舒军
吴建东
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DONGFANG ELECTRIC Co Ltd
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Dongfang Electric Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Smart grids as climate change mitigation technology in the energy generation sector
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/20Climate change mitigation technologies for sector-wide applications using renewable energy
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages

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Abstract

The invention discloses an energy management controller used for a wind and light storage micro-grid system. The energy management controller comprises an energy management monitoring system, a generating and energy storing system, a factory load, distribution and protection system, a data collection system and a remote dispatching and monitoring system, an energy management system, a remote client and a power grid dispatching center can obtain real-time work data and system power distribution parameters of wind and light storage equipment in the micro-grid system in time, so that grid connection output power of the whole micro-grid system is consumed by factory loads, layering dispatching is received by the energy management system and a power grid, electricity utilization cost of a factory is reduced, and meanwhile stable grid connection operation for a long time of the wind and light storage micro-grid system is achieved.

Description

A kind of energy management controller for wind-light storage micro-grid system
Technical field
The invention belongs to the technical field of electric power system distributed power generation micro-grid system, relate to a kind of energy management controller for wind-light storage micro-grid system.
Background technology
In the past few decades, electrical network scale constantly expands, and progressively develops into the super large internet system of centralized power generation, long distance power transmission.But the continuous increase of long distance power transmission, the degree of dependence that makes receiving end electrical network externally carry out electric power improve constantly, the stability of operation of power networks and fail safe are tending towards declining, and are difficult to meet diversified power demands.On the other hand, the worry of the problems such as the petering out of global conventional energy resource, environmental pollution is but highlighted day by day.Given this, environmental protection, efficiently and flexibly distributed power generation is extensively favored.
Distributed power generation generally refer to by relatively small-sized Blast Furnace Top Gas Recovery Turbine Unit (TRT) (general 50MW following) dispersed placement at user/load on-the-spot or contiguous place, thereby realize the mode of the energy supply of generating electricity.Distributed power generation have position flexibly, the feature of disperseing, adapted to admirably dispersion electricity needs and resource distribution, delayed the transmission and distribution network required huge investment that upgrades; For subsequent use each other with large electrical network, also make power supply reliability be improved; General also have pollution less, advantage that efficiency of energy utilization is high.
In recent years, the wind-light storage micro-grid system of employing includes the energy storage device of at least one wind turbine generator, at least one photovoltaic generation unit, at least one lithium battery, and corresponding distribution system.Wherein, wind turbine generator, photovoltaic generation unit, energy storage device are connected to ac bus by converter system, are connected with large electrical network, meanwhile, are also connected with plant area's load on large electrical network.This system has adopted a large amount of advanced persons electric electronic current change technology, the various new energy and diversified energy storage device etc. fast, there is high efficiency of energy utilization, increase economic efficiency, improve the advantages such as environmental benefit, but also bring the many and diverse feature of electric power system, as of a great variety in distributed power generation unit, response is fast, overload capacity is poor, controls difficulty; Trend two-way flow, original protective relaying device must upgrade; Energy characteristics differs, economic optimization complexity etc.; Therefore, microgrid stable optimal operation not only depends on advanced cell level distributed power generation unit controls, also depends on efficient system integration control and energy management technology.
Summary of the invention
The object of the invention is to propose a kind of energy management controller of the wind-light storage micro-grid system that is applicable to integrated mill, can make EMS, Terminal Server Client and grid dispatching center obtain in time wind-light storage equipment real-time working data and the system power parameter in this micro-grid system, the grid-connected power output of being convenient to realize whole micro-grid system is by plant area's load consumption, and the layering of accepting EMS and electrical network is allocated, reduce plant area's electric cost, the long-term stability that simultaneously meets wind-light storage micro-grid system is incorporated into the power networks.
For this reason, the present invention is by the following technical solutions:
A kind of energy management controller for wind-light storage micro-grid system, it is characterized in that: comprise energy management supervisory control system, generating and energy-storage system, plant area's load, distribution and protection system, data acquisition system, remote scheduling and supervisory control system, wherein, energy management supervisory control system is by the network switch and generating and energy-storage system, distribution and protection system, data acquisition system is set up communication and is connected, energy management supervisory control system by remote scheduling and supervisory control system to generating and energy-storage system, plant area's load, distribution and protection system, data acquisition system is carried out remote scheduling and monitoring,
Described energy management supervisory control system according to the main switch of current wind-light storage micro-grid system as the cutting and the difference of state and power control enabler flags position of high voltage bus switch, wind power generation set grid-connection switch, the grid-connected switch of photovoltaic generation unit and the grid-connected switch of energy storage device, carry out corresponding master control flow process or troubleshooting process, determine the interior each power supply of wind-light storage micro-grid system and load under different operating modes, all can reach the effective control to microgrid internal power, guarantee that power flow direction meets the demands;
Normally work in order not affect on-site important load, according to plant area's operating mode difference, reality is the load power Pload of plant area, in the time that energy management supervisory control system detects that electrical network input active-power P 1 is less than setting threshold, reduce immediately exerting oneself of wind turbine generator and photovoltaic generation unit, wherein: in the time that exerting oneself of wind turbine generator and photovoltaic generation unit is reduced to 0, electrical network input active-power P 1 excises wind-light storage micro-grid system while being still less than setting threshold.
Except wind turbine generator, photovoltaic generation unit, energy storage device, described energy management controller detects the electric energy, voltage, electric current, frequency of plant area electrical network inlet wire point, wind-light storage micro-grid system access point, wind-light storage micro-grid system low-voltage bus bar, meritorious, idle, power factor etc. by electric power relay equipment, also to detect the energy output of wind turbine generator, photovoltaic generation unit, energy storage device, and the signal detecting is inputted to energy management supervisory control system by Ethernet mode, by grid-connected control logic to the each unit of wind-light storage open, stop, power control; In addition, in plant area, electrical network inlet wire point is provided with reverse power protection device, prevents from being greater than plant area's electric energy adverse current phenomenon causing of loading because of wind-light storage experimental system energy output.
Described generating and energy-storage system include the energy storage device of at least one wind turbine generator, at least one photovoltaic generation unit, at least one lithium battery; Wind turbine generator, photovoltaic generation unit, energy storage device are all connected to ac bus by converter system, then are connected with large electrical network, connect plant area's load on large electrical network;
Described plant area load comprises that factory building is produced load and load in living area;
Described distribution and protection system are for the protection of power flow direction and the grid-connected switch of wind-light storage micro-grid system, the active power that generating and energy-storage system are sent only flows into the load on ac bus, and in protection in the time there is inverse probability situation, tripping wind-light storage micro-grid system electrical network connecting valve, to prevent that wind-light storage micro-grid system from falling power transmission to electrical network;
Described data acquisition system is for analog signal and digital signal, wherein analog signal comprises generating and the signal of telecommunication of the each generating equipment of energy-storage system, the signal of telecommunication of plant area's load each point, and digital signal comes from the on off operating mode of each circuit breaker or the operate condition of protective device in wind-light storage micro-grid system;
Described remote scheduling and supervisory control system are to utilize remote pages to set up remote scheduling and monitor workstation realization.
According to the described energy management controller for wind-light storage micro-grid system, it is characterized in that control principle is as follows:
1) generated output of wind-light storage system is less than plant area's load power, taking electrical network input active-power P 1 as reference signal, dynamically adjust the generated output P3 of wind-light storage system according to load power Pload, meet the requirement that electrical network input active-power P 1 is greater than setting threshold;
2) photovoltaic generation moves according to MPPT;
3) higher limit of wind power generation maximum power is that Pwind-max is discharged and recharged the calculating acquisitions such as power by generated output P3, photovoltaic generation power, the energy storage of wind-light storage system, in the time of wind-powered electricity generation unit generated output Pwind < Pwind-max, wind-powered electricity generation unit moves according to MPPT, in the time of wind-powered electricity generation unit generated output Pwind >=Pwind-max, wind-powered electricity generation unit is according to Pwind-max output-constant operation;
4) according to stabilizing, algorithm is stabilized honourable output pulsation to energy storage device and peak load shifting algorithm reclaims and offered load needs.
According to the described energy management controller for wind-light storage micro-grid system, it is characterized in that the grid-connected control flow of this system control wind-light storage micro-grid system is as follows:
A) emergency shutdown, off-grid are shut down, and control room is powered by UPS; After safe shutdown, closed wind-light storage micro-grid system access switch, 10Kv/690V low-pressure side bus switch successively, system re-powers, and central controller initialization, judges whether manual operation;
B) judge whether No starting wind-light storage system of plant area;
C) under the pattern of being incorporated into the power networks, detection of grid point active power of output P1; Determine whether the operating time, in the time of the operating time, judge whether the meritorious P1 of electrical network input is greater than setting threshold, satisfies condition, according to setting selection, according to stabilizing, algorithm is stabilized honourable output pulsation to energy storage device or peak load shifting algorithm reclaims and offered load needs;
D), when in the operating time, judge whether the meritorious P1 of electrical network input is greater than setting threshold;
E) P1 is greater than setting threshold, and the charged initialization of the each cell controller of wind-light storage is limited to Pwind-max in setting wind-powered electricity generation unit peak power output and is discharged and recharged the calculating acquisitions such as power by generated output P3, photovoltaic generation power, the energy storage of wind-light storage system;
F) aweather group of motors controller transmission Pwind-max instruction of supervisory control system, judges whether wind-powered electricity generation unit receives Pwind-max;
G) wind-powered electricity generation unit receives Pwind-max, enters control system of wind turbines, waits for wind-powered electricity generation set grid-connection condition, satisfy condition, and closed wind-powered electricity generation unit switch; Meanwhile, photovoltaic operates in routine work state, waits for grid-connected condition, satisfies condition, closed photovoltaic switch;
H) in the time of wind power generation, photovoltaic power generation grid-connecting operation, energy storage device is set and operates in grid-connected mode of operation, wait for the grid-connected condition of energy storage, closed energy storage device switch;
I) wind-light storage is incorporated into the power networks, the generated output P3 of detection of grid point active power of output P1, wind-light storage system;
J) determine whether the operating time, not in the time of the operating time, wind-powered electricity generation unit, photovoltaic safe shutdown, disconnect wind-powered electricity generation unit switch, photovoltaic switch;
K) when in the operating time, judge whether the generated output of wind-light storage system is less than plant area's load power, i.e. P3<P1, meets the demands, and judges the meritorious P1 >=setting threshold of electrical network input; Energy storage device is selected to stabilize honourable output pulsation or the recovery of peak load shifting algorithm and offered load needs according to stabilizing algorithm according to setting;
L), in the time of P1 >=setting threshold, set Pwind-max;
M) when P1≤setting threshold, set Pwind-max and judge whether Pwind-max calculated value is less than or equal to 0, satisfies condition, set aerogenerator unit safe and shut down;
N) after aerogenerator unit safe is shut down, while again judging P1≤setting threshold, photovoltaic and energy storage device safe shutdown.
The dispatch command of described energy management supervisory control system is delivered to the generating equipment of generating and energy-storage system, the operational factor of the generating equipment of generating and energy-storage system is read in timing simultaneously, for example: the operational factors such as real-time active power, reactive power, output frequency, malfunction.Energy management supervisory control system will be carried out coordinated scheduling control according to wind-light storage micro-grid system load condition and current each generating equipment.
Described generating with the generating equipment access way of energy-storage system is: wind-driven generator is connected with low-voltage bus bar by step-down transformer, and photovoltaic generation group is connected to low-voltage bus bar.
Described distribution and protection system:
1 power control
Normally work in order not affect on-site important load, according to plant area's operating mode difference, reality is the load power Pload of plant area, in the time that energy management supervisory control system detects that electrical network input active-power P 1 is less than setting threshold, reduce immediately exerting oneself of wind turbine generator and photovoltaic generation unit, wherein: in the time that exerting oneself of wind turbine generator and photovoltaic generation unit is reduced to 0, electrical network input active-power P 1 excises wind-light storage micro-grid system while being still less than setting threshold.To ensure normal power flow direction.
2 reverse power protection measures
Install the power relay with directivity in wind-light storage micro-grid system lead-in circuit breaker side, power relay is used for judging power direction, the electric current of power relay comes from the electric current at wind-light storage micro-grid system switch cubicle lead-in circuit breaker place, and the voltage of power relay comes from the primary voltage at the lead-in circuit breaker place of generating and energy-storage system; In the time occurring that wind-light storage micro-grid system falls the inverse probability situation of power transmission to electrical network, reverse power protection action, disconnects generating and energy-storage system.
Described data acquisition system comprises digital analog I O harvester, relay equipment and electric energy meter, protection measure and control device and automatic weather station, wherein:
Analog signal IO acquisition function is mainly realized by PLC, the main analog signal gathering comes from the power transducer of wind, light, the each generating equipment of storage and plant area's load place each point, transformer both sides voltage, current transformer, the signal of telecommunication of passing back with dry Transformer Temperature Controller case; Main number signal comes from each circuit breaker on off operating mode or protective device operate condition in system, and PLC drives digital output port to realize the telemechanical operation of the circuit breaker to bus in system simultaneously;
Relay equipment and electric energy meter, protection measure and control device transmit the distribution system parameters such as the each node power of wind-light storage micro-grid system, voltage, electric current, electric energy, fault for timing, the foundation as energy management supervisory control system to the monitoring of wind-light storage micro-grid system and control;
Automatic weather station is used for gathering real-time meteorological data, as: wind speed, wind direction, temperature, humidity, radiation; Provide Data support to generated power forecasting; Meanwhile, occurring in bad weather condition situation, as the foundation of energy management supervisory control system starting protection function.
Electrical network remote scheduling power distribution automation solution is, by optical-fibre communications, energy management computer set up to communication with ownership transformer station and is connected, realizes belonging to transformer station, by the present invention, whole wind-light storage micro-grid system being carried out to scheduling controlling.
Beneficial effect of the present invention is as follows:
The present invention sets up actual wind-light storage micro-grid system in somewhere; EMS; by generating and energy-storage system in data acquisition acquisition system; plant area's load; real time execution parameter and the state of distribution and protection system etc., and according to running status, complete the power control of wind generator system, photovoltaic generating system, energy-storage system; guarantee that power is that electrical network flows to power load, and ensure the stable of frequency, active power.The each unit of wind-light storage can safety grid-connection operation, in the time of plant area's load variations, EMS to the each unit of wind-light storage open, stop, power control, the each unit of wind-light storage can safe and stable operation, only to plant area's load power supply, not to large grid transmission.Receive electrical network remote scheduling simultaneously, and can issue the page by Internet remote access.
Brief description of the drawings
Fig. 1 is wind-light storage micro-grid system structure chart
Fig. 2 is reverse power protection trend schematic diagram of the present invention
Fig. 3 is system group network structural representation of the present invention.
Embodiment
Wind-light storage micro-grid system is substantially by energy management supervisory control system, and six parts such as generating and energy-storage system, plant area's load, distribution and protection system, data acquisition system, system group network form.Setting up communication by the network switch with electricity generation system, energy-storage system, distribution and protection system, data acquisition system and remote scheduling and supervisory control system by energy management supervisory control system is connected.
Energy management supervisory control system is the control core of whole wind-light storage micro-grid system, mainly comprises fault detect flow process, master control flow process and troubleshooting process aspect Functional Design.According to cutting and the difference of state and power control enabler flags position of current main switch, monitoring software is in different states.The different conditions of corresponding monitoring software, carries out corresponding master control flow process or troubleshooting process, determines the interior each power supply of microgrid and loads under different operating modes, all can reach the effective control to microgrid internal power, guarantees that power flow direction meets the demands.EMS (being structured on database server), remote scheduling are all connected with switch with supervisory control system, remote server, realize the object with micro-grid system Communication Control.Remote monitoring work station can be accessed remote server by Internet, and then accessing database server, realizes the object of the ruuning situation of monitoring wind-light storage experimental system.
As shown in Figure 1, in wind-light storage micro-grid system, include the energy storage device of at least one wind turbine generator, at least one photovoltaic generation unit, at least one lithium battery, be connected with energy management supervisory control system by switch.The dispatch command of energy management supervisory control system is delivered to each generating equipment, and each generating equipment such as the operational factor such as active power, reactive power, output frequency, malfunction is in real time read in simultaneously timing.Energy management supervisory control system will be carried out coordinated scheduling control according to wind-light storage micro-grid system load condition and current each generating equipment.
Generating equipment access way is: wind-driven generator is connected with low-voltage bus bar by step-down transformer.Photovoltaic generation group is connected to low-voltage bus bar.
The power-supply system of wind-light storage micro-grid system, is attracted by local power network line.Plant area's load mainly comprises that complex factories are produced load and load in living area.
Being incorporated into the power networks is the conventional operation mode of this pilot system.Blower fan, photovoltaic generation group and energy-storage system of accumulator are incorporated to plant area's electrical network.Blower fan and photovoltaic generation group, to the power supply of on-site load, because its energy output is subject to such environmental effects very large, are stabilized intrasystem meritorious fluctuation by energy-storage system of accumulator, and the each switch of system is controlled according to grid-connected operating state by energy management supervisory control system.
1) power flow direction
From power balance result, on weekdays daytime, night and nonworkdays daytime, the energy output of wind-powered electricity generation and photoelectricity is less than the burden requirement of full factory.In nonworkdays night, restriction system inner blower maximum power, blower fan is exerted oneself and can not be greater than load aggregate demand.Therefore can accomplish that in pilot system, renewable energy power generation amount is only personal for plant area's load, can be to electrical network electricity sent outside.Specifically, on direction of tide, gaining merit that blower fan and photovoltaic send only can flow into the load on bus, and can not flow into electric power system through bus.
2) power control
Normally work in order not affect on-site important load, according to plant area's operating mode difference, reality is the load power Pload of plant area, in the time that energy management supervisory control system detects that electrical network input active-power P 1 is less than setting threshold, reduce immediately exerting oneself of wind turbine generator and photovoltaic generation unit, wherein: in the time that exerting oneself of wind turbine generator and photovoltaic generation unit is reduced to 0, electrical network input active-power P 1 excises wind-light storage micro-grid system while being still less than setting threshold.To ensure normal power flow direction.
3) inverse probability
As shown in Figure 2, the electrical main connecting wire of whole system is simplified as follows: regard bus as a voltage node 1, wind-light storage electricity generation system high-pressure side is regarded a voltage node 2 as, load on whole 1 bus is equivalent to a branch road, load bus is 3, and whole system can abbreviation be a two ends Power supply network.
In the time there is inverse probability phenomenon, intrasystem trend flow direction is as an accompanying drawing 2(left side) as shown in.Now wind-light storage electricity generation system has been carried power to grid side.Therefore, the trend flow direction allowing in system while being incorporated into the power networks can only be as shown in Fig. 2 (right side), that is: load branch circuit obtains meritorious and idle from two voltage nodes.Owing to only having a load branch circuit in this equivalent system, there is no other branch, therefore, load bus 3 is exactly the power branch in network, is also the voltage minimum point in network; In Fig. 2, CB1 is that electrical network service entrance switch, CB2 are that the grid-connected switch of wind-light storage, P1+ Q1 are the generating gross power (active power+reactive power) of electrical network electrical network input general power (active power+reactive power), P2+Q2 wind-light storage system.
From above tidal current analysis, as long as ensure that the voltage (being busbar voltage) of load bus 3, lower than the voltage of 1,2 two voltage node, just there will not be electric power to send outside.And the voltage of voltage node 1 belongs to the scope of dispatching of power netwoks, uncontrollable, the voltage of load bus 3 also can change according to the fluctuation of network load etc., unadjustable, therefore can only be by controlling the voltage of voltage node 2, by controlling wind-light storage low-pressure side bus voltage, prevent inverse probability phenomenon.
4) reverse power protection measure
In order in monitor network, whether inverse probability to have occurred in real time, can judge power direction with the power relay of directivity in lead-in circuit breaker installing.In the time there is inverse probability situation, reverse power protection action tripping, disconnect wind-light storage system.In conjunction with actual conditions, can further adopt low forward power protection to obtain larger protection range.
Wind-light storage micro-grid system key data collecting device has: digital analog I O harvester, relay equipment and electric energy meter, protection measure and control device and automatic weather station
Simulation with I O acquisition function is mainly realized by PLC, main collection analog signal comes from the power transducer of wind, light, the each generating equipment of storage and plant area's load place each point, transformer both sides voltage, current transformer, the signal of telecommunication of passing back with dry Transformer Temperature Controller case; Main number signal comes from each circuit breaker on off operating mode or protective device operate condition in system, and PLC drives digital output port to realize the telemechanical operation of the circuit breaker to bus in system simultaneously.
Relay equipment and electric energy meter, protection measure and control device major function are the each node powers of timing transmission system, voltage, electric current, electric energy, the distribution system health parameters such as fault, as EMS to system monitoring with control foundation.
Automatic weather station major function is: gather real-time meteorological data as wind speed, wind direction, temperature, humidity, radiation; Provide Data support to wind power generation and photovoltaic generation power prediction; Simultaneously occurring in bad weather condition situation, as the foundation of EMS starting protection function.
Electrical network remote scheduling power distribution automation solution is, by optical-fibre communications, energy management computer set up to communication with ownership transformer station and is connected, realizes belonging to transformer station, by the present invention, whole wind-light storage micro-grid system being carried out to scheduling controlling.
EMS selects corresponding remote pages to carry out long-range issue remote monitoring work station the running status of the wind generator system in wind-light storage micro-grid system, photovoltaic generating system, energy-storage battery system and distribution and protection can access remote server by Internet; and then accessing database server, the object of the ruuning situation of realization monitoring wind-light storage micro-grid system.
System of the present invention is for realizing equipment centralized control in system, corresponding electrical network remote scheduling simultaneously, and possess Internet remote access function.

Claims (9)

1. the energy management controller for wind-light storage micro-grid system, it is characterized in that: comprise energy management supervisory control system, generating and energy-storage system, plant area's load, distribution and protection system, data acquisition system, remote scheduling and supervisory control system, wherein, energy management supervisory control system is by the network switch and generating and energy-storage system, distribution and protection system, data acquisition system is set up communication and is connected, energy management supervisory control system by remote scheduling and supervisory control system to generating and energy-storage system, plant area's load, distribution and protection system, data acquisition system is carried out remote scheduling and monitoring,
Described energy management supervisory control system is cut and the difference of state and power control enabler flags position according to current wind-light storage micro-grid system, carry out corresponding master control flow process or troubleshooting process, determine the interior each power supply of wind-light storage micro-grid system and load under different operating modes, all can reach the effective control to microgrid internal power, guarantee that power flow direction meets the demands;
Described energy management controller detects plant area's electrical network inlet wire point, wind-light storage micro-grid system access point, the electric energy of wind-light storage micro-grid system low-voltage bus bar, voltage, electric current, frequency, meritorious, idle, power factor a series of signal by electric power relay equipment, also to detect the energy output signal of wind turbine generator, photovoltaic generation unit, energy storage device, and the signal detecting is inputted to energy management supervisory control system by Ethernet mode, by grid-connected control logic to the each unit of wind-light storage open, stop, power control;
Meanwhile, plant area's electrical network inlet wire point place is provided with reverse power protection device;
Described generating and energy-storage system include the energy storage device of at least one wind turbine generator, at least one photovoltaic generation unit, at least one lithium battery; Wind turbine generator, photovoltaic generation unit, energy storage device are all connected to ac bus by converter system, then are connected with large electrical network, connect plant area's load on large electrical network;
Described plant area load comprises that factory building is produced load and load in living area;
Described distribution and protection system are for the protection of power flow direction and the grid-connected switch of wind-light storage micro-grid system, the active power that generating and energy-storage system are sent only flows into the load on ac bus, and in protection in the time there is inverse probability situation, tripping wind-light storage micro-grid system electrical network connecting valve, to prevent that wind-light storage micro-grid system from falling power transmission to electrical network;
Described data acquisition system is for analog signal and digital signal, wherein analog signal comprises generating and the signal of telecommunication of the each generating equipment of energy-storage system, the signal of telecommunication of plant area's load each point, and digital signal comes from the on off operating mode of each circuit breaker or the operate condition of protective device in wind-light storage micro-grid system;
Described remote scheduling and supervisory control system are to utilize remote pages to set up remote scheduling and monitor workstation realization.
2. a kind of energy management controller for wind-light storage micro-grid system according to claim 1, it is characterized in that: according to plant area's operating mode difference, reality is the load power Pload of plant area, in the time that energy management supervisory control system detects that electrical network input active-power P 1 is less than setting threshold, reduce immediately exerting oneself of wind turbine generator and photovoltaic generation unit, wherein: in the time that exerting oneself of wind turbine generator and photovoltaic generation unit is reduced to 0, electrical network input active-power P 1 excises wind-light storage micro-grid system while being still less than setting threshold.
3. a kind of energy management controller for wind-light storage micro-grid system according to claim 1, it is characterized in that: the dispatch command of described energy management supervisory control system is delivered to the generating equipment of generating electricity with energy-storage system, the operational factor of the generating equipment of generating and energy-storage system is read in timing simultaneously; Energy management supervisory control system will be carried out coordinated scheduling control according to wind-light storage micro-grid system load condition and current each generating equipment.
4. a kind of energy management controller for wind-light storage micro-grid system according to claim 1, it is characterized in that: described generating with the generating equipment access way of energy-storage system is: wind-driven generator is connected with low-voltage bus bar by step-down transformer, and photovoltaic generation group is connected to low-voltage bus bar.
5. a kind of energy management controller for wind-light storage micro-grid system according to claim 1, it is characterized in that: the lead-in circuit breaker side at wind-light storage micro-grid system is installed the power relay with directivity, power relay is used for judging power direction, the electric current of power relay comes from the electric current at wind-light storage micro-grid system switch cubicle lead-in circuit breaker place, and the voltage of power relay comes from the primary voltage at the lead-in circuit breaker place of generating and energy-storage system; In the time occurring that wind-light storage micro-grid system falls the inverse probability situation of power transmission to electrical network, reverse power protection action, disconnects generating and energy-storage system.
6. a kind of energy management controller for wind-light storage micro-grid system according to claim 1; it is characterized in that: at the grid-connected switch of wind-light storage micro-grid system place installing reverse power protection device; in the time there is inverse probability situation; the switch that tripping wind-light storage micro-grid system is connected with system, prevents that wind-light storage micro-grid system from falling power transmission to electrical network.
7. a kind of energy management controller for wind-light storage micro-grid system according to claim 1; it is characterized in that: described data acquisition system comprises digital analog I O harvester, relay equipment and electric energy meter, protection measure and control device and automatic weather station, wherein:
Analog signal IO acquisition function is realized by PLC, and the analog signal of collection comes from the power transducer of wind, light, the each generating equipment of storage and plant area's load place each point, transformer both sides voltage, current transformer, the signal of telecommunication of passing back with dry Transformer Temperature Controller case; The digital signal that analog signal IO gathers comes from each circuit breaker on off operating mode or protective device operate condition in system, and PLC drives digital output port to realize the telemechanical operation of the circuit breaker to bus in system simultaneously;
Relay equipment and electric energy meter, protection measure and control device transmit the distribution system parameters such as the each node power of wind-light storage micro-grid system, voltage, electric current, electric energy, fault for timing, the foundation as energy management supervisory control system to the monitoring of wind-light storage micro-grid system and control; Automatic weather station is used for gathering real-time meteorological data.
8. according to a kind of energy management controller for wind-light storage micro-grid system described in claim 1-7 any one, it is characterized in that its control principle is as follows:
(1) generated output of wind-light storage system is less than plant area's load power, taking electrical network input active-power P 1 as reference signal, dynamically adjust the generated output P3 of wind-light storage system according to load power Pload, meet the requirement that electrical network input active-power P 1 is greater than setting threshold;
(2) photovoltaic generation moves according to MPPT;
(3) higher limit of wind power generation maximum power is that Pwind-max is discharged and recharged the calculating acquisitions such as power by generated output P3, photovoltaic generation power, the energy storage of wind-light storage system, in the time of wind-powered electricity generation unit generated output Pwind < Pwind-max, wind-powered electricity generation unit moves according to MPPT, in the time of wind-powered electricity generation unit generated output Pwind >=Pwind-max, wind-powered electricity generation unit is according to Pwind-max output-constant operation;
(4) energy storage device is selected to stabilize honourable output pulsation or the recovery of peak load shifting algorithm and offered load needs according to stabilizing algorithm according to setting.
9. a kind of energy management controller for wind-light storage micro-grid system according to claim 8, is characterized in that the grid-connected control flow of wind-light storage micro-grid system is as follows:
Emergency shutdown, off-grid are shut down, and control room is powered by UPS; After safe shutdown, closed wind-light storage micro-grid system access switch, 10Kv/690V low-pressure side bus switch successively, system re-powers, and central controller initialization, judges whether manual operation;
Judge whether No starting wind-light storage system of plant area;
Under the pattern of being incorporated into the power networks, detection of grid point active power of output P1; Determine whether the operating time, when not in the operating time, judge whether the meritorious P1 of electrical network input is greater than setting threshold, satisfies condition, according to setting selection, according to stabilizing, algorithm is stabilized honourable output pulsation to energy storage device or peak load shifting algorithm reclaims and offered load needs;
When in the operating time, judge whether the meritorious P1 of electrical network input is greater than setting threshold;
P1 is greater than setting threshold, and the charged initialization of the each cell controller of wind-light storage is limited to Pwind-max in setting wind-powered electricity generation unit peak power output and is discharged and recharged the calculating acquisitions such as power by generated output P3, photovoltaic generation power, the energy storage of wind-light storage system;
Supervisory control system aweather group of motors controller transmits Pwind-max instruction, judges whether wind-powered electricity generation unit receives Pwind-max;
Wind-powered electricity generation unit receives Pwind-max, enters control system of wind turbines, waits for wind-powered electricity generation set grid-connection condition, satisfy condition, and closed wind-powered electricity generation unit switch; Meanwhile, photovoltaic operates in routine work state, waits for grid-connected condition, satisfies condition, closed photovoltaic switch;
In the time of wind power generation, photovoltaic power generation grid-connecting operation, energy storage device is set and operates in grid-connected mode of operation, wait for the grid-connected condition of energy storage, closed energy storage device switch;
Wind-light storage is incorporated into the power networks, the generated output P3 of detection of grid point active power of output P1, wind-light storage system;
Determine whether the operating time, not in the time of the operating time, wind-powered electricity generation unit, photovoltaic safe shutdown, disconnect wind-powered electricity generation unit switch, photovoltaic switch;
When in the operating time, judge whether the generated output of wind-light storage system is less than plant area's load power, i.e. P3<P1, meets the demands, and judges the meritorious P1 >=setting threshold of electrical network input; Energy storage device is selected to stabilize honourable output pulsation or the recovery of peak load shifting algorithm and offered load needs according to stabilizing algorithm according to setting
In the time of P1 >=setting threshold, set Pwind-max;
When P1≤setting threshold, set Pwind-max and judge whether Pwind-max calculated value is less than or equal to 0, satisfies condition, set aerogenerator unit safe and shut down;
After aerogenerator unit safe is shut down, while again judging P1≤setting threshold, photovoltaic and energy storage device safe shutdown.
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104283212A (en) * 2014-10-11 2015-01-14 广西大学 Double-fed wind power generation set physical simulation platform based on Compact RIO
CN104333042A (en) * 2014-11-17 2015-02-04 国网上海市电力公司 Energy storage current transformer grid connection and grid disconnection seamless switching device and method
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110115295A1 (en) * 2009-11-19 2011-05-19 Chong-Sop Moon Energy management system and grid-connected energy storage system including the energy management system
CN102591278A (en) * 2012-02-01 2012-07-18 天津市电力公司 Microgrid control system having power generation and load forecast functions and microgrid control method
CN102684215A (en) * 2012-03-27 2012-09-19 中国东方电气集团有限公司 Energy management system for grid-connected operation of wind and photovoltaic power storage micro-grid system
CN103427430A (en) * 2013-04-08 2013-12-04 深圳市天智系统技术有限公司 Hybrid energy storage system and energy management method thereof in micro-grid
CN103532158A (en) * 2013-10-28 2014-01-22 浙江南都电源动力股份有限公司 Micro-grid new energy hybrid energy storage system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110115295A1 (en) * 2009-11-19 2011-05-19 Chong-Sop Moon Energy management system and grid-connected energy storage system including the energy management system
CN102591278A (en) * 2012-02-01 2012-07-18 天津市电力公司 Microgrid control system having power generation and load forecast functions and microgrid control method
CN102684215A (en) * 2012-03-27 2012-09-19 中国东方电气集团有限公司 Energy management system for grid-connected operation of wind and photovoltaic power storage micro-grid system
CN103427430A (en) * 2013-04-08 2013-12-04 深圳市天智系统技术有限公司 Hybrid energy storage system and energy management method thereof in micro-grid
CN103532158A (en) * 2013-10-28 2014-01-22 浙江南都电源动力股份有限公司 Micro-grid new energy hybrid energy storage system

Cited By (25)

* Cited by examiner, † Cited by third party
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CN107370168B (en) * 2016-05-11 2020-04-10 Ls 产电株式会社 Electrical energy storage device
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