CN109066677A - A kind of air-conditioning quasi-nonlinear group load operation active demand energy design method - Google Patents
A kind of air-conditioning quasi-nonlinear group load operation active demand energy design method Download PDFInfo
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- CN109066677A CN109066677A CN201810973941.1A CN201810973941A CN109066677A CN 109066677 A CN109066677 A CN 109066677A CN 201810973941 A CN201810973941 A CN 201810973941A CN 109066677 A CN109066677 A CN 109066677A
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The present invention relates to a kind of air-conditioning quasi-nonlinear group load operation active demand energy design methods, belong to control system technical field.This method is intimately associated the starting of air-conditioning quasi-nonlinear group's load, operation and energy consumption characteristics, considers peak load regulation network and scheduling spare capacity needs pressure, proposes that energy storage participates in non-linear group's load operation harmonic management and energy scheduling scheme.Electric energy needed for calculating harmonic management on the basis of non-linear group's load operation harmonic components is analyzed first；Secondly the practical feasibility of group's load energy-saving run scheduling is combined, electric network fault and peak valley mend electric energy active demand, and progress peak valley is mended stored energy capacitance and calculated.Finally, carrying out the configuration of total stored energy capacitance in conjunction with above two functional requirement, energy management and running design is carried out.The present invention has the reasonable disposition of energy storage and reasonable scheduling strategy, can be realized the active demand management of non-linear group's load operation.
Description
Technical field
The present invention relates to a kind of air-conditioning quasi-nonlinear group load operation active demand energy design methods, belong to control system
Technical field.
Background technique
To respond energy saving policy, many air-conditioning producers are proposed convertible frequency air-conditioner, but energy-efficient convertible frequency air-conditioner largely accesses
Power grid can cause a large amount of harmonic waves to power grid again, influence the normal operation of other equipment, also influence power quality.Air-conditioning quasi-nonlinear
The non-sinusoidal current that group's load generates is exactly the harmonic source of utility network, since harmonic source is to power grid harmonic electric current, in electricity
The anti-upper harmonic voltage that generates of roadlock drops, and is superimposed with sine voltage, will result in grid voltage waveform distortion, and influences power supply electricity
It can quality.Mine hoist failure precisely due to higher hamonic wave false triggering turn on thyristors caused by converting operation, so as to cause
System is out of control.Therefore, following grid side or load side design corresponding harmonic wave active suppression circuit, to realize power grid friendly
Load target especially it is necessary to.So monitoring and the power performances for improving air-conditioning quasi-nonlinear load access power grid are most important.Root
According to the standard proposed in IEEE Std 929-2000 and IEEE Std.P1547, each odd harmonic content and total in electric system
Percent harmonic distortion has strict control standard.In addition, influence of the huge air conditioner load number to Network Voltage Stability can not neglect
Depending on.For example, the large area blackout occurred in the country such as Brazil, U.S. in 2010.Peak load is idle, and deficiency will cause electricity
Pressure collapse, even results in whole system and disintegrates.This undoubtedly gives the daily life of normal social economic order and the people to bring
Strong influence, at the same also reflected current electric system scholar for voltage stability research there is also it is some not
Foot.Non-linear group's load operation brings harmonic wave to power grid, while causing a large amount of energy losses, and over the years, scientific research technical staff mentions
Active Power Filter Technology out, effect is preferable, but active power filtering needs DC power supply, and existing technology is all to utilize network voltage,
Then active rectification provides power supply to active filter.Switching process may bring harmonic wave for the second time, secondly harmonic management power supply
24 hours uninterrupted power supplies are needed, power grid peak of power consumption demand is higher, this is highly detrimental to operation of power networks.If Harmonic Current by
Energy-storage system stable power-supplying can mitigate peak load regulation network pressure using the flexible mobility of the time and space of energy-storage system.Secondly
Air-conditioning quasi-nonlinear group's load operation characteristic has its particularity, can flexibly be shut down according to environmental control parameters.So power grid peak
It is worth the time, can shuts down the appropriate short time, or stop part of generating units.Accumulation power supply also can choose for non-linear group's load peak
Value operation backup power source, so the reasonable disposition of energy storage can really realize that non-linear group is negative plus the design of reasonable scheduling strategy
The active demand management of lotus operation.
Summary of the invention
It is an object of the invention to propose that solving non-linear group's load operation brings harmonic wave to power grid, while causing a large amount of energy
Amount loss, active power filtering need DC power supply, and switching process may bring harmonic wave for the second time, and secondly harmonic management power supply needs 24
Hour uninterrupted power supply, power grid peak of power consumption demand is higher, and a kind of air-conditioning class for being highly detrimental to operation of power networks technical problem is non-
Linear group load operation active demand energy design method.
In order to solve the above-mentioned technical problem the present invention uses following technical scheme:
A kind of air-conditioning quasi-nonlinear group load operation active demand energy design method, comprising the following steps: step 1, analysis are empty
The non-linear group's load operation grid side harmonic components of tone category carry out dynamic harmonic wave, compensating reactive power simultaneously by active filter
Calculate stored energy capacitance needed for active filter；Step 2, energy consumption demand number in the analysis air-conditioning quasi-nonlinear group load peak time
Amount and hesitation period the Energy-saving in the air-conditioning quasi-nonlinear group load peak time, in conjunction with the energy consumption quantity required and institute
It states the Energy-saving and calculates peak valley benefit stored energy capacitance；
Step 3 calculates total stored energy capacitance in conjunction with active filter stored energy capacitance, peak valley benefit stored energy capacitance；Step 4 passes through energy
It measures management and running and carries out total stored energy capacitance power source charges.
Optimal technical scheme as invention: specific step is as follows for the step 1: step 1.1 bears fixed air-conditioning
The groups of building of lotus carry out starting and run harmonic wave monitoring, analyze air-conditioning quasi-nonlinear group load operation grid side harmonic components；Step
Rapid 1.2,24 hours current time integrals are given for the load current of each harmonic to calculate；Step 1.3, active filter
Load current is detected by current transformer, and is calculated by internal DSP, extracts the harmonic components in load current, so
Internal IGBT is sent to by pwm signal afterwards, control inverter generates one and load harmonic current is equal in magnitude, contrary
Harmonic current injection be filtered into power grid, calculate the load current amount of each harmonic；Step 1.4, by each time it is humorous
Active filter stored energy capacitance is calculated in the load current amount of wave.
Optimal technical scheme as invention: specific step is as follows for the step 2: step 2.1, to calculate air-conditioning class non-
Electric energy total amount needed for linear group load 24 hours；Air-conditioning class in 24 hours in power grid time to peak section is calculated in step 2.2
Energy consumption quantity required needed for non-linear group's load operation；Step 2.3, calculate in 24 hours in power grid time to peak section can
The time interval and number of units of temporary downtimes air-conditioning；The energy conservation of step 2.4, the temporary downtimes air-conditioning being calculated in time to peak section
Quantity；Step 2.5, the electric energy in conjunction with needed for group's load operation in 24 hours in power grid time to peak section energy consumption quantity required with
The Energy-saving of temporary downtimes air-conditioning show that peak valley mends stored energy capacitance.
Optimal technical scheme as invention: described to carry out total stored energy capacitance power source charges by energy management and running to work as
When the groups of building of fixed air conditioner load have generation of electricity by new energy, active power filtering is given at any time using local load electricity consumption surplus
Device energy storage and peak valley mend accumulation power supply charging；When the groups of building of fixed air conditioner load do not have generation of electricity by new energy, power grid is utilized
The low power consumption period carries out active filter energy storage and peak valley mends accumulation power supply charging.
Optimal technical scheme as invention: the active filter is this Active Power Filter-APF of Sutton.
A kind of air-conditioning quasi-nonlinear group load operation active demand energy design method of the present invention, using the above technology
Scheme compared with prior art, has following technical effect that
(1) consider that the entire network load of air conditioner load accounting is higher, run the period compares concentration, causes shadow to power grid power performances
It rings.Active power filtering needs power supply, and operation needs to consume energy, and introduces energy-storage battery as active filter power supply, in low power consumption
Phase charging reduces power supply on power grid daytime pressure.
(2) air-conditioning midway is combined to power off, environment has long period character of keeping power, and the appropriate peak valley that reduces mends energy storage
Demand capacity, energy conservation reduce cost while reducing peak load regulation network pressure simultaneously.
(3) stored energy capacitance of active power filtering comes from real system harmonic current time integral, can efficiently use energy storage appearance
Amount.
Detailed description of the invention
Fig. 1 is stored energy capacitance configuration strategy schematic diagram of the invention；
Fig. 2 is the power grid power load distribution situation skeleton diagram that the present invention refers to；
Fig. 3 is software interface schematic diagram of the present invention for harmonic wave statistics；
Fig. 4 is that energy storage active harmonics of the present invention configure front and back current waveform comparison diagram；
Fig. 5 is air-conditioning converter busbar voltage fluctuation figure of the network voltage failure of the present invention without energy storage for power supply；
Fig. 6 is the air-conditioning converter busbar voltage fluctuation figure that configuration capacity energy storage of the present invention is actively powered.
Specific embodiment
The technical solution of invention is described in detail with reference to the accompanying drawing:
Specific embodiment are as follows:
Such as Fig. 1, Fig. 2, shown in Fig. 3, a kind of air-conditioning quasi-nonlinear group load operation active demand energy design that the present invention designs
Method including harmonic wave control active power filtering stored energy capacitance and considers that the peak valley of air-conditioning class environment energy supply retention performance is mended energy storage and held
Amount design, this method are intimately associated the starting of air-conditioning quasi-nonlinear group's load, operation and energy consumption characteristics, consider peak load regulation network and scheduling
Spare capacity needs pressure proposes that energy storage participates in non-linear group's load operation harmonic management and energy scheduling scheme.It analyzes first
Electric energy needed for calculating harmonic management on the basis of non-linear group's load operation harmonic components；Secondly group's load energy-saving run is combined to dispatch
Practical feasibility, electric network fault and peak valley mend electric energy active demand, carries out peak valley and mend stored energy capacitance to calculate.Finally, in conjunction with
Upper two functional requirement carries out the configuration of total stored energy capacitance, carries out energy management and running design.The present invention is the following steps are included: step
Rapid 1, analyze air-conditioning quasi-nonlinear group load operation grid side harmonic components, by active filter carry out dynamic harmonic wave,
Compensating reactive power simultaneously calculates stored energy capacitance needed for active filter；Step 2 was analyzed in the air-conditioning quasi-nonlinear group load peak time
Consume energy quantity required and hesitation period the Energy-saving in the air-conditioning quasi-nonlinear group load peak time, needs in conjunction with the energy consumption
It asks quantity and the Energy-saving to calculate peak valley and mends stored energy capacitance；Step 3 is mended in conjunction with active filter stored energy capacitance, peak valley
Stored energy capacitance calculates total stored energy capacitance；Step 4 carries out total stored energy capacitance power source charges by energy management and running.
Specific step is as follows for step 1: step 1.1, for the groups of building of fixed air conditioner load, carry out starting with run it is humorous
Wave monitoring, analyzes air-conditioning quasi-nonlinear group load operation grid side harmonic components；Step 1.2, the load electricity for each harmonic
Stream is given 24 hours current time integrals and is calculated；Step 1.3, active filter detect load electricity by current transformer
Stream, and calculated by internal DSP, the harmonic components in load current are extracted, inside is then sent to by pwm signal
IGBT, control inverter generates one and load harmonic current is equal in magnitude, and contrary harmonic current injection is into power grid
It is filtered, calculates the load current amount of each harmonic；Step 1.4 is calculated by the load current amount of each harmonic
Active filter stored energy capacitance.
Specific step is as follows for step 2: step 2.1, calculate air-conditioning quasi-nonlinear group load 24 hours needed for electric energy it is total
Amount；Step 2.2, air-conditioning quasi-nonlinear group's load operation in 24 hours in power grid time to peak section is calculated needed for energy consumption
Quantity required；Step 2.3, calculate in 24 hours in power grid time to peak section can temporary downtimes air-conditioning time interval and platform
Number；The Energy-saving of step 2.4, the temporary downtimes air-conditioning being calculated in time to peak section；Step 2.5, in conjunction in 24 hours
The Energy-saving of electric energy needed for group's load operation in power grid time to peak section energy consumption quantity required and temporary downtimes air-conditioning obtains
Peak valley mends stored energy capacitance out.
The DC power supply of active harmonics directlys adopt hybrid energy-storing battery pack 1, and low voltage crossing and peak valley are mended strategy and used
Hybrid battery group 2.For the groups of building of fixed air conditioner load, the harmonic wave monitoring for being started and being run first, analysis FFT at
Point, 24 hours current time integrals then are given to the electric current of every kind of harmonic wave, total amount is calculated, is selected as harmonic wave accumulation power supply capacity
The reference of type.Electric energy needed for compareing group's load operation in public electric wire net time to peak section, with power at full capacity in peak value
Between section integral as peak valley benefit accumulation power supply Capacity Selection primarily refer to.In conjunction with air conditioner surroundings energy keep function and
Subside and be delayed, takes into account human comfort primary demand and load fluctuation feature.Consider energy storage technology limitation, paddy is mended at appropriate adjustment peak
Energy storage configuration capacity.
Carrying out total stored energy capacitance power source charges by energy management and running is when the groups of building of fixed air conditioner load have newly
When the energy generates electricity, accumulation power supply is mended with peak valley to active filter energy storage at any time using local load electricity consumption surplus and is filled
Electricity；When the groups of building of fixed air conditioner load do not have generation of electricity by new energy, active power filtering is carried out using the power grid low power consumption period
Device energy storage and peak valley mend accumulation power supply charging.
Network load operation demand peak period, combining environmental temperature and humidity adjustment demand and connect flexible choice stored energy capacitance
Enter opportunity, air conditioner load is maintained normally to energize, buffers and run pressure of powering caused by power grid in a large amount of air-conditioning concentrative time intervals.It is non-
Stored energy capacitance needed for calculating harmonic management on linear group load operation harmonic components analysis foundation, is filled using the low power consumption time
Electricity reduces power demand on power grid daytime.Electric energy used in harmonic management is consumed without online power grid, can choose arbitrary period independence
Flexible configuration, the stored energy capacitance that peak valley is mended also will more rationally.
Active filter is this Active Power Filter-APF of Sutton.
As shown in figure 4, configuring front and back current waveform comparison diagram for energy storage active harmonics of the present invention.According to air-conditioning quasi-nonlinear
Group's load operation active demand energy storage is implemented, and is integrated by harmonic wave power consumption, chooses stored energy capacitance, and the active filter insertion of design is negative
Lotus operating system will become apparent from harmonic components and have largely to reduce by filtering front and back effect.
It as shown in Figure 5, Figure 6, is air-conditioning converter busbar voltage fluctuation of the network voltage failure of the present invention without energy storage for power supply
The air-conditioning converter busbar voltage fluctuation figure that figure is actively powered with configuration capacity energy storage of the present invention.Without energy storage for power supply and configuration capacity
The air-conditioning converter busbar voltage fluctuation that energy storage is actively powered compares, and the air-conditioning converter that configuration capacity energy storage is actively powered is female
Line voltage, which is fallen, to be significantly reduced, and system stability is enhanced.
Specific embodiments described above has carried out further the purpose of the present invention, technical scheme and beneficial effects
Detailed description, it should be understood that being not limited to this hair the foregoing is merely specific embodiments of the present invention
Bright range, any those skilled in the art, that is made under the premise of not departing from design and the principle of the present invention is equal
Variation and modification, should belong to the scope of protection of the invention.
Claims (5)
1. a kind of air-conditioning quasi-nonlinear group load operation active demand energy design method, which comprises the following steps:
Step 1, analysis air-conditioning quasi-nonlinear group load operation grid side harmonic components, carry out dynamic inhibition by active filter
Harmonic wave, compensating reactive power simultaneously calculate stored energy capacitance needed for active filter；
Step 2, energy consumption quantity required and air-conditioning quasi-nonlinear group's load peak in the analysis air-conditioning quasi-nonlinear group load peak time
It is worth hesitation period the Energy-saving in the time, calculates peak valley in conjunction with the energy consumption quantity required and the Energy-saving and mend storage
It can capacity；
Step 3 calculates total stored energy capacitance in conjunction with active filter stored energy capacitance, peak valley benefit stored energy capacitance；
Step 4 carries out total stored energy capacitance power source charges by energy management and running.
2. air-conditioning quasi-nonlinear group load operation active demand energy design method according to claim 1, which is characterized in that
Specific step is as follows for the step 1:
Step 1.1, the groups of building for fixing air conditioner load carry out starting and run harmonic wave monitoring, analyze air-conditioning quasi-nonlinear
Group's load operation grid side harmonic components；
Step 1.2 is given the load current of each harmonic 24 hours current times integral and is calculated；
Step 1.3, active filter detect load current by current transformer, and are calculated by internal DSP, extract negative
The harmonic components in electric current are carried, internal IGBT is then sent to by pwm signal, control inverter generates one and load harmonic
Size of current is equal, and contrary harmonic current injection is filtered into power grid, calculates the load current of each harmonic
Amount；Active filter stored energy capacitance is calculated by the load current amount of each harmonic in step 1.4.
3. air-conditioning quasi-nonlinear group load operation active demand energy design method according to claim 1, which is characterized in that
Specific step is as follows for the step 2:
Step 2.1 calculates electric energy total amount needed for air-conditioning quasi-nonlinear group load 24 hours；
Step 2.2, air-conditioning quasi-nonlinear group's load operation in 24 hours in power grid time to peak section is calculated needed for consumption
It can quantity required；
Step 2.3, calculate in 24 hours in power grid time to peak section can temporary downtimes air-conditioning time interval and number of units；
The Energy-saving of step 2.4, the temporary downtimes air-conditioning being calculated in time to peak section；
Step 2.5, the electric energy in conjunction with needed for group's load operation in 24 hours in power grid time to peak section energy consumption quantity required with
The Energy-saving of temporary downtimes air-conditioning show that peak valley mends stored energy capacitance.
4. air-conditioning quasi-nonlinear group load operation active demand energy design method according to claim 1, which is characterized in that
It is described that carry out total stored energy capacitance power source charges by energy management and running be when the groups of building of fixed air conditioner load have new energy
When power generation, gives active filter energy storage and peak valley to mend accumulation power supply at any time using local load electricity consumption surplus and charge；When
When the groups of building of fixed air conditioner load do not have generation of electricity by new energy, active filter energy storage is carried out using the power grid low power consumption period
Accumulation power supply charging is mended with peak valley.
5. air-conditioning quasi-nonlinear group load operation active demand energy design method according to claim 1, which is characterized in that
The active filter is this Active Power Filter-APF of Sutton.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807143A (en) * | 2015-05-14 | 2015-07-29 | 南通大学 | Electric-energy-friendly-based air conditioner load side active demand strategy |
| CN106374470A (en) * | 2015-07-22 | 2017-02-01 | 利思电气（上海）有限公司 | High-voltage active filtering apparatus with time-sharing energy storage |
| CN106451510A (en) * | 2016-11-11 | 2017-02-22 | 国家电网公司 | Energy storage station capacity and charge-discharge power configuring method adaptive to peak clipping and valley filling |
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- 2018-08-24 CN CN201810973941.1A patent/CN109066677B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807143A (en) * | 2015-05-14 | 2015-07-29 | 南通大学 | Electric-energy-friendly-based air conditioner load side active demand strategy |
| CN106374470A (en) * | 2015-07-22 | 2017-02-01 | 利思电气（上海）有限公司 | High-voltage active filtering apparatus with time-sharing energy storage |
| CN106451510A (en) * | 2016-11-11 | 2017-02-22 | 国家电网公司 | Energy storage station capacity and charge-discharge power configuring method adaptive to peak clipping and valley filling |
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