CN108964022A - A kind of power coordination control method suitable for large capacity microgrid - Google Patents
A kind of power coordination control method suitable for large capacity microgrid Download PDFInfo
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- CN108964022A CN108964022A CN201810689403.XA CN201810689403A CN108964022A CN 108964022 A CN108964022 A CN 108964022A CN 201810689403 A CN201810689403 A CN 201810689403A CN 108964022 A CN108964022 A CN 108964022A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 72
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000010248 power generation Methods 0.000 claims abstract description 12
- 238000000418 atomic force spectrum Methods 0.000 claims abstract description 10
- 230000008030 elimination Effects 0.000 abstract description 4
- 238000003379 elimination reaction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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- H02J3/383—
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- H02J3/386—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of power coordination control method suitable for large capacity microgrid, step is: energy management system of micro-grid power rolls coordinated control function module according to year exchange electricity target, and the electricity exchange for combining generation of electricity by new energy power and Calculation of electric charge in microgrid to go out the same day controls target；According to the same day completed daily electricity exchange control target, year residue exchange electricity, daily rolling calculation are calculated；By calculated daily electricity exchange controls target in real time daily, new energy power supply sunrise force curve is formulated；By Power Decomposition strategy, the power after decomposition is distributed to each new energy power station AGC software function module by telecontrol channel, then power generation power is adjusted by each new energy power station AGC software function module in real time.Such method can realize that the rolling layering power coordination to large capacity microgrid controls and exchanges with major network year electricity and controls in target value hereinafter, improving the on-site elimination ability of new energy and the system stability of micro-capacitance sensor.
Description
Technical field
The invention belongs to power scheduling and distribution automation system technical fields, in particular to a kind of to be suitable for large capacity
The power coordination control method of microgrid.
Background technique
Traditional grid type microgrid has following features: 1) voltage class is low, generally at 35 kilovolts and following；System scale is small,
Power system capacity is not more than 20MW in principle, and power supply mainly includes distributed photovoltaic, blower etc. based on renewable energy；2) micro-
Net is internal generally to carry out frequency and voltage control by microgrid central controller (MGCC), so that it is guaranteed that load electricity consumption and electrical equipment
Stable operation；3) using energy on-site elimination as main feature, microgrid is usually no more than microgrid with electricity is exchanged the year of external electrical network
The 50% of year electricity consumption.
With the requirement of society and local economic development, also there are some new variations and trend in microgrid construction: 1) micro-
Net is no longer traditional low capacity (20MW) power grid, and (generation of electricity by new energy installed capacity is in 100MW or more) for large-scale microgrid
Occur in the area such as Inner Mongol；2) the total power generation capacity of the new energy in microgrid generally can be than the power load in microgrid greatly very
It is more, it be easy to cause on the big volume and electricity to major network and send problem；3) large capacity microgrid is with greater need for handle and major network year accumulative upper power transmission amount
Control year total power generation a target value (such as 25%) hereinafter, to reduce influence to major network.
It is no longer the new energy power supply of the past inside large capacity microgrid, but with centralized photovoltaic plant, wind power plant and light
Based on thermo-power station, the capacity in single power station has tens MW or more, and each power station is configured with automated power control (AGC) software function
Can, it is exported by AGC software adjustment generating equipment active power, microgrid central controller has been no longer appropriate for carrying out large capacity microgrid
Power coordination control.Large capacity microgrid need an effective technical method come solve the power coordination control problem of micro-capacitance sensor with
And it is exchanged with major network electricity and meets control target, influence problem of the reduction to major network.
Summary of the invention
The purpose of the present invention is to provide a kind of power coordination control method suitable for large capacity microgrid, can realize
Electricity is controlled and exchanges with major network year to the rolling layering power coordination of large capacity microgrid to control in target value hereinafter, improving new
The on-site elimination ability of the energy and the system stability of micro-capacitance sensor.
In order to achieve the above objectives, solution of the invention is:
A kind of power coordination control method suitable for large capacity microgrid, includes the following steps:
Step 1, energy management system of micro-grid power rolls coordinated control function module and exchanges electricity target according to year, and ties
Close the electricity exchange control target that generation of electricity by new energy power and Calculation of electric charge in microgrid go out the same day；
Step 2, according to the same day completed daily electricity exchange control target, year residue exchange electricity is calculated, to repair
Positive future daily electricity exchange control target, daily rolling calculation；
Step 3, by calculated daily electricity exchange controls target in real time daily, new energy power supply sunrise force curve is formulated；
Step 4, the power after decomposition is passed through remote according to new energy power supply sunrise force curve by Power Decomposition strategy
Dynamic channel is distributed to each new energy power station AGC software function module, then real-time by each new energy power station AGC software function module
Adjust power generation power.
In above-mentioned steps 1, will year exchange electricity goal decomposition be daily electricity exchange control target, generated output need count and
All power generation types in microgrid, including total generated output such as photovoltaic, wind-powered electricity generation, photo-thermal, power load needs in meter and microgrid
All load types, including total load such as industrial load, Commercial Load and resident load.
Power rolling amendment is carried out in above-mentioned steps 2: according to the same day completed daily electricity exchange control actual value, being calculated
Year residue exchanges electricity controlling value out, so that it is determined that daily electricity exchange control target value one day after, daily rolling calculation.
Power supply power curve is formulated in above-mentioned steps 3: according to when daily electricity exchange control target value, making micro-grid system
96 points of same day or 288 point source day real-time power curve.
Power hierarchical control in above-mentioned steps 4: power rolls coordinated control function module according to new energy power supply daily output
Curve is in real time distributed every 15 minutes after decomposition or every 5 minutes performance numbers by telecontrol channel by Power Decomposition strategy
To each new energy power station AGC software function module, then power generation is adjusted by each new energy power station AGC software function module in real time and is set
Preparation electrical power.
After adopting the above scheme, the beneficial effects of the present invention are: a kind of power coordination suitable for large capacity microgrid controls
Method mainly solves existing large capacity microgrid (100MW or more) internal power coordinated control and exchanges control with major network electricity
The problems such as, energy management system of micro-grid (MEMS) uses energy exchange day rolling amendment technology, and year total electricity is exchanged control mesh
Mark is decomposed into daily electricity exchange control target, exchanges control target according to completed daily electricity and corrects the following daily electricity exchange control
Target processed, and the sunrise force curve of new energy power supply is formed, then power control decomposition is carried out by sunrise force curve, and be handed down to light
The new energy power stations such as volt, photo-thermal, wind power plant AGC (automated power control) software function module, by new energy power station AGC software function
It is adjustable the power generations power such as photovoltaic DC-to-AC converter, blower, ensure that large capacity microgrid exchanges control with major network electricity and exists
In target zone, the on-site elimination ability of new energy and the system stability of micro-capacitance sensor are substantially increased, has and uses well
Value and dissemination.
Detailed description of the invention
Fig. 1 is system block diagram of the invention；
Fig. 2 is that power rolls coordinated control procedure chart.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention and beneficial effect are described in detail.
Fig. 1 is system block diagram of the invention.A kind of power coordination suitable for large capacity microgrid of the present invention controls
Method, specifically includes the following steps:
1, coordinated control function module is rolled by energy management system of micro-grid power and electricity target is exchanged according to year, and combined
Generation of electricity by new energy power and Calculation of electric charge in microgrid go out the electricity exchange control target on the same day；Generated output need count and
All power generation types in microgrid, including total generated output such as photovoltaic, wind-powered electricity generation, photo-thermal, power load needs in meter and microgrid
All load types, including total load such as industrial load, Commercial Load and resident load.Day exchange electricity controls target
It is worth calculation formula are as follows:
Mt=∑ Mc+ (∑ Me- ∑ Mc) * %Lt
Wherein: Mt indicates that same day exchange electricity controls target value；∑ Me indicates that same day new energy power station can generate electricity total amount；∑
Mc indicates same day total load amount；%Lt indicates exchange power control goal constraint value (for example, 25%).
2, according to the same day completed daily electricity exchange control target, year residue exchange electricity is calculated, so that amendment is not
Come daily electricity exchange control target, daily rolling calculation；According to the same day completed daily electricity exchange control actual value, calculate
Year residue exchange electricity controlling value, so that it is determined that daily electricity exchange control target value one day after, daily rolling calculation.It is one day following
Day exchange electricity target correction value calculation formula are as follows:
Mt+1=Mpt+ △ Mt
Wherein: Mt+1 indicates that the following light exchanges electricity target correction value；Mpt indicates that the same day exchanges electricity target control
Value；△ Mt indicates the deviation between same day exchange electricity target control value and practical controlling value.
3, by the control target of calculated daily electricity exchange in real time daily, 96 points of micro-grid system same day or 288 are made
Point source day real-time power curve.
4, according to new energy power supply sunrise force curve, by Power Decomposition strategy, every 15 minutes or every 5 after decomposition
Minute performance number is distributed to each new energy power station AGC software function module by telecontrol channel in real time, then by each new energy electricity
AGC software function module of standing adjusts power generation power in real time.Power Decomposition policy calculation formula are as follows:
Ppi=Pci* (Pti/ ∑ Pti)
Wherein: Ppi indicates that sometime (15 minutes or 5 minutes) some new energy power station issues power adjustment value；
Pci indicates sometime total power curve performance number；Pti indicates that the power-adjustable of sometime some new energy power station always adds
Value；∑ Pti indicates that the power-adjustable of sometime all new energy power stations is always value added.
Fig. 2 is that power rolls coordinated control procedure chart.As shown in the figure, year total electricity is exchanged into control goal decomposition first
Control target is exchanged for daily electricity, carries out energy exchange goal decomposition；Control target amendment is exchanged according to completed daily electricity
(△ MW) future daily electricity exchange control target, carries out energy exchange target rolling amendment；Control target is exchanged according to daily electricity
The sunrise force curve of new energy power supply is formulated, new energy power supply power curve is formulated, the power after decomposition is passed through telecontrol channel
It is distributed to each new energy power station AGC software function module, then hair is adjusted by each new energy power station AGC software function module in real time
Electric equipment generated output.By rolling amendment and hierarchical control, complete power coordination control to large capacity microgrid and with master
Year exchange electricity control is netted below target value.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (5)
1. a kind of power coordination control method suitable for large capacity microgrid, it is characterised in that include the following steps:
Step 1, energy management system of micro-grid power rolls coordinated control function module according to year exchange electricity target, and combines micro-
Generation of electricity by new energy power and Calculation of electric charge in net go out the electricity exchange control target on the same day；
Step 2, according to the same day completed daily electricity exchange control target, year residue exchange electricity is calculated, so that amendment is not
Come daily electricity exchange control target, daily rolling calculation；
Step 3, by calculated daily electricity exchange controls target in real time daily, new energy power supply sunrise force curve is formulated；
Step 4, the power after decomposition is led to by telemechanical by Power Decomposition strategy according to new energy power supply sunrise force curve
Road is distributed to each new energy power station AGC software function module, then is adjusted in real time by each new energy power station AGC software function module
Power generation power.
2. a kind of power coordination control method suitable for large capacity microgrid as described in claim 1, it is characterised in that: described
It is daily electricity exchange control target by year exchange electricity goal decomposition in step 1, all power generations in generated output meter and microgrid
Type, all load types in power load meter and microgrid.
3. a kind of power coordination control method suitable for large capacity microgrid as described in claim 1, it is characterised in that: described
In step 2, according to the same day completed daily electricity exchange control actual value, year residue exchange electricity controlling value is calculated, thus
Determine daily electricity exchange control target value one day after, daily rolling calculation.
4. a kind of power coordination control method suitable for large capacity microgrid as described in claim 1, it is characterised in that: described
In step 3, according to when daily electricity exchange control target value, makes 96 points of the micro-grid system same day or 288 point source days are real-time
Power curve.
5. a kind of power coordination control method suitable for large capacity microgrid as described in claim 1, it is characterised in that: described
In step 4, power rolls coordinated control function module according to new energy power supply sunrise force curve, by Power Decomposition strategy,
Every 15 minutes after decomposition or every 5 minutes performance numbers are distributed to each new energy power station AGC software by telecontrol channel in real time
Functional module, then power generation power is adjusted by each new energy power station AGC software function module in real time.
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