CN108155676A - New energy power generation field harmonic suppression method and device, controller and storage medium - Google Patents
New energy power generation field harmonic suppression method and device, controller and storage medium Download PDFInfo
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- CN108155676A CN108155676A CN201711401387.1A CN201711401387A CN108155676A CN 108155676 A CN108155676 A CN 108155676A CN 201711401387 A CN201711401387 A CN 201711401387A CN 108155676 A CN108155676 A CN 108155676A
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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
- 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
- H02J3/48—Controlling the sharing of the in-phase component
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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
- H02J3/38—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
- H02J3/50—Controlling the sharing of the out-of-phase component
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Abstract
The embodiment of the invention discloses a method and a device for suppressing harmonic waves of a new energy power generation field, a controller and a storage medium. The method comprises the following steps: acquiring rated power of each generator set of the new energy power plant; determining a reactive power compensation value of each generator set according to the rated power of each generator set; determining reactive power regulating quantity of each generator set according to the rated power of each generator set and the reactive power compensation value of each generator set; and adjusting the reactive power provided by each generator set according to the reactive power adjustment quantity of each generator set so as to enable the power factors of each generator set in operation to be different and suppress the harmonic waves of the new energy power plant. The method, the device, the controller and the storage medium for suppressing the harmonic waves of the new energy power generation field can suppress the harmonic waves of the grid-connected point of the power generation field and reduce the cost; and the harmonic suppression effect can be improved.
Description
Technical field
The present invention relates to the suppressing method of technical field of power generation more particularly to a kind of generation of electricity by new energy field harmonic wave, device, controls
Device and computer readable storage medium processed.
Background technology
Harmonic wave in generating field is mainly caused by generating equipment, equipment for power transmission and distribution and electric system nonlinear load etc.
's.Harmonic wave refer to periodical non-sine of ac carry out carry out Fourier space decomposition, obtain with power supply fundamental frequency phase
Frequency except same component is more than the component of fundamental frequency.
For generating field, the harmonic current of generating field grid entry point is the sum of harmonic current of all generating sets.It is humorous
Wave electric current can reduce the production, transmission and utilization ratio of electric energy, and can have an adverse effect to the work of load, therefore need
Harmonic current is inhibited.
At present, the harmonic current of generating field grid entry point is inhibited, mainly using wave filter or with harmonics restraint work(
The reactive-load compensation equipment of energy.
But inhibit harmonic current using wave filter or the reactive-load compensation equipment with harmonic restraining function, volume can be increased
Outer cost, and inhibit the effect of harmonic wave poor.
Invention content
Suppressing method, device, controller and the computer that the embodiment of the present invention provides a kind of generation of electricity by new energy field harmonic wave can
Storage medium is read, the harmonic wave of generating field grid entry point can be inhibited, reduce cost, and harmonic suppression effect can be improved.
On the one hand, an embodiment of the present invention provides a kind of suppressing method of generation of electricity by new energy field harmonic wave, method includes：
Obtain the rated power of each generating set of generation of electricity by new energy field；
According to the rated power of each generating set, the reactive power compensation value of each generating set is determined；
According to the reactive power compensation value of the rated power of each generating set and each generating set, each hair is determined
The reactive power regulated quantity of motor group；
According to the reactive power regulated quantity of each generating set, the reactive power of each generating set is adjusted, so that each
Power factor when generating set is run is different, inhibits the harmonic wave of generating field.
In one embodiment of the invention, according to the nothing of the rated power of each generating set and each generating set
Reactive power compensator value determines the reactive power regulated quantity of each generating set, including：
According to the reactive power compensation value of each generating set, the sum of reactive power compensation value of generating field is calculated；
According to the rated power of each generating set, the sum of rated power of generating field is calculated；
According to the reactive power compensation value of each generating set, the rated power of each generating set, reactive power compensation
The sum of value and the sum of rated power determine the reactive power regulated quantity of each generating set.
In one embodiment of the invention, according to the reactive power compensation value of each generating set, each generating set
The sum of rated power, the sum of reactive power compensation value and rated power, determine that the reactive power of each generating set is adjusted
Amount, including：
For each generating set, using the quotient of the rated power of the generating set and the sum of rated power as among first
Value；
Using the product of the sum of the first median and reactive power compensation value as the second median；
By the reactive power compensation value of the generating set and the difference of the second median, it is determined as the idle of the generating set
Power regulation amount.
In one embodiment of the invention, according to the rated power of each generating set, each generating set is determined
Reactive power compensation value, including：
By the quotient of overtone order that pi and generating field needs inhibit, the maximum power angle as each generating set；
For each generating set, a power angle is randomly selected in the range of power angle, by the specified of the generating set
The product of power and the tangent value of selected power angle is determined as the reactive power compensation value of the generating set, wherein, power angle
Ranging from from negative maximum power angle to positive maximum power angle.
In one embodiment of the invention, in the reactive power regulated quantity according to each generating set, each hair is adjusted
Before the reactive power of motor group, method further includes：
According to the maximum reactive power of each generating set, minimum reactive power, current reactive power and default harmonic wave
Number determines the reactive power adjustment factor of each generating set；
According to the reactive power regulated quantity of each generating set, the reactive power of each generating set is adjusted, including：
According to the reactive power regulated quantity of each generating set, the rated power of each generating set, each generating set
Current reactive power and each generating set reactive power adjustment factor, adjust the reactive power of each generating set.
In one embodiment of the invention, according to the reactive power regulated quantity of each generating set, each generating set
Rated power, the current reactive power of each generating set and the reactive power adjustment factor of each generating set, adjust
The reactive power of each generating set, including：
According to the reactive power regulated quantity of each generating set, the rated power of each generating set, each generating set
Current reactive power and each generating set reactive power adjustment factor, calculate the idle work(of target of each generating set
Rate；
According to the target reactive power of each generating set, the reactive power of each generating set is adjusted.
On the other hand, an embodiment of the present invention provides a kind of restraining device of generation of electricity by new energy field harmonic wave, device includes：
Acquisition module, for obtaining the rated power of each generating set of generation of electricity by new energy field；
First determining module for the rated power according to each generating set, determines the idle work(of each generating set
Rate offset；
Second determining module, for the reactive power of the rated power according to each generating set and each generating set
Offset determines the reactive power regulated quantity of each generating set；
Adjustment module for the reactive power regulated quantity according to each generating set, adjusts the idle of each generating set
Power so that power factor during each generating set operation is different, inhibits the harmonic wave of generating field.
In one embodiment of the invention, the second determining module, including：
First computing unit for the reactive power compensation value according to each generating set, calculates the idle work(of generating field
The sum of rate offset；
Second computing unit for the rated power according to each generating set, calculates the sum of rated power of generating field；
Determination unit, for according to each generating set reactive power compensation value, the rated power of each generating set,
The sum of reactive power compensation value and the sum of rated power determine the reactive power regulated quantity of each generating set.
In one embodiment of the invention, determination unit is specifically used for：
For each generating set, using the quotient of the rated power of the generating set and the sum of rated power as among first
Value；
Using the product of the sum of the first median and reactive power compensation value as the second median；
By the reactive power compensation value of the generating set and the difference of the second median, it is determined as the idle of the generating set
Power regulation amount.
In one embodiment of the invention, the first determining module is specifically used for：
By the quotient of overtone order that pi and generating field needs inhibit, the maximum power angle as each generating set；
For each generating set, a power angle is randomly selected in the range of power angle, by the specified of the generating set
The product of power and the tangent value of selected power angle is determined as the reactive power compensation value of the generating set, wherein, power angle
Ranging from from negative maximum power angle to positive maximum power angle.
In one embodiment of the invention, device further includes：
Third determining module, for the maximum reactive power, minimum reactive power, current idle according to each generating set
Power and default overtone order determine the reactive power adjustment factor of each generating set；
Adjustment module is specifically used for：
According to the reactive power regulated quantity of each generating set, the rated power of each generating set, each generating set
Current reactive power and each generating set reactive power adjustment factor, adjust the reactive power of each generating set.
In one embodiment of the invention, adjustment module, including：
Computing unit, for according to each generating set reactive power regulated quantity, the rated power of each generating set,
Each current reactive power of generating set and the reactive power adjustment factor of each generating set, calculate each generating set
Target reactive power；
Unit is adjusted, for the target reactive power according to each generating set, adjusts the idle work(of each generating set
Rate.
In another aspect, the embodiment of the present invention provides a kind of inhibition controller of generation of electricity by new energy field harmonic wave, including：Memory
And processor；
Memory is used to store executable program code；
Processor is provided in an embodiment of the present invention new to perform for reading the executable program code stored in memory
The suppressing method of energy generating field harmonic wave.
In another aspect, the embodiment of the present invention provides a kind of computer readable storage medium, on computer readable storage medium
It is stored with computer program instructions；New energy provided in an embodiment of the present invention is realized when computer program instructions are executed by processor
The suppressing method of generating field harmonic wave.
Suppressing method, device, controller and the computer-readable storage of the generation of electricity by new energy field harmonic wave of the embodiment of the present invention
Medium changes the power factor of each generating set by adjusting the reactive power of each generating set, makes each generator
The power factor of group is different, and then the phase angle of harmonic wave for generating each generating set is different so that each time humorous
Destructive interference occurs for wave, can inhibit the harmonic wave of generating field grid entry point；And without using wave filter or with harmonics restraint
The reactive-load compensation equipment of function, reduces cost.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, it will make below to required in the embodiment of the present invention
Attached drawing is briefly described, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to these attached drawings.
Fig. 1 shows the flow diagram of the suppressing method of generation of electricity by new energy field provided in an embodiment of the present invention harmonic wave；
Fig. 2 shows generation of electricity by new energy field provided in an embodiment of the present invention to the idle control strategy figure of generating set；
Fig. 3 shows the structure diagram of the restraining device of generation of electricity by new energy field provided in an embodiment of the present invention harmonic wave；
Fig. 4 shows the suppressing method that can realize generation of electricity by new energy field harmonic wave according to embodiments of the present invention and device
The structure chart of the exemplary hardware architecture of computing device.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make the mesh of the present invention
, technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, the present invention is further retouched in detail
It states.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting the present invention.
To those skilled in the art, the present invention can be real in the case of some details in not needing to these details
It applies.The description of embodiment is used for the purpose of by showing that the example of the present invention is better understood from the present invention to provide below.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this practical relationship or sequence.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
Also there are other identical elements in the process of the element, method, article or equipment.
Fig. 1 shows the flow diagram of the suppressing method of generation of electricity by new energy field provided in an embodiment of the present invention harmonic wave.Newly
The suppressing method of energy generating field harmonic wave can include：
S101：Obtain the rated power of each generating set of generation of electricity by new energy field.
S102：According to the rated power of each generating set, the reactive power compensation value of each generating set is determined.
S103：According to the reactive power compensation value of the rated power of each generating set and each generating set, determine
The reactive power regulated quantity of each generating set.
S104：According to the reactive power regulated quantity of each generating set, the reactive power of each generating set is adjusted, so that
Power factor during each generating set operation is different, inhibits the harmonic wave of generating field.
It should be noted that the generation of electricity by new energy field of the embodiment of the present invention can be wind power plant, or photovoltaic
Generating field.
Illustratively, it is illustrated by taking generating field A as an example below.
Assuming that generating field includes 3 generating sets, respectively the 1st generating set, the 2nd generating set and the 3rd hair
Motor group.The rated power of the 1st generating set obtained is P1, the rated power of the 2nd generating set is P2, the 3rd power generation
The rated power of unit is P3。
Assuming that wind power plant needs to reduce M subharmonic, it is to be understood that M subharmonic refers to frequency as M times of fundamental frequency
Wave.
In one embodiment of the invention, according to the rated power of each generating set, each generating set is determined
Reactive power compensation value can include：
By the quotient of overtone order that pi and generating field needs inhibit, the maximum power angle as each generating set；
For each generating set, a power angle is randomly selected in the range of power angle, by the specified of the generating set
The product of power and the tangent value of selected power angle is determined as the reactive power compensation value of the generating set, wherein, power angle
Ranging from from negative maximum power angle to positive maximum power angle.
Specifically, maximum power angle is calculated according to expression (1)
Wherein,For maximum power angle, π is pi, and M is overtone order.
It is illustrated by taking the 2nd generating set as an example below.
For the 2nd generating set, according to the rated power P of the 2nd generating set2, determine the nothing of the 2nd generating set
Reactive power compensator value.
The reactive power compensation value of the 2nd generating set is calculated according to expression (2).
Wherein, Δ Q 'nFor the reactive power compensation value of n-th generating set, PnFor the rated power of n-th generating set,ForAn interior random value.
In one embodiment of the invention, when calculating reactive power compensation value using expression formula (2), in order to simplify meter
It calculates,Can using value asOr
After the reactive power compensation value for calculating the 2nd generating set, according to the reactive power compensation of the 2nd generating set
It is worth Δ Q '2And rated power P2, the reactive power regulated quantity of the 2nd generating set of calculating.
In one embodiment of the invention, according to the nothing of the rated power of each generating set and each generating set
Reactive power compensator value determines the reactive power regulated quantity of each generating set, can include：According to the idle of each generating set
Power compensating value calculates the sum of reactive power compensation value of generating field；According to the rated power of each generating set, power generation is calculated
The sum of rated power of field；According to the reactive power compensation value of each generating set, the rated power, idle of each generating set
The sum of power compensating value and the sum of rated power determine the reactive power regulated quantity of each generating set.
It should be noted that each hair of the sum of the reactive power compensation value of generating field for the currently active operation in generating field
The sum of rated power of motor group；The sum of rated power of generating field is each generating set of the currently active operation in generating field
The sum of rated power；Wherein, the generating set of the currently active operation refers to the generating set being currently at and under net state.
In one embodiment of the invention, according to the reactive power compensation value of each generating set, each generating set
The sum of rated power, the sum of reactive power compensation value and rated power, determine that the reactive power of each generating set is adjusted
Amount, can include：
For each generating set, using the quotient of the rated power of the generating set and the sum of rated power as among first
Value；
Using the product of the sum of the first median and reactive power compensation value as the second median；
By the reactive power compensation value of the generating set and the difference of the second median, it is determined as the idle of the generating set
Power regulation amount.
Specifically, the sum of reactive power compensation value △ Q are calculated according to expression (3)∑。
Wherein, N is the generating set sum effectively run in generating field.
The sum of rated power P is calculated according to expression (4)∑。
And then the reactive power regulated quantity of the 2nd generating set is calculated according to expression (5).
Wherein, Δ QnReactive power regulated quantity for n-th generating set.
After the reactive power regulated quantity for calculating the 2nd generating set, adjusted according to the reactive power of the 2nd generating set
Measure Δ Q2, the reactive power of the 2nd generating set of adjusting.
In one embodiment of the invention, the sum of reactive power regulated quantity of each generating set of wind power plant is zero.
It should be noted that when the reactive voltage order change of cutting-in control point or the quantity of generating set change (ratio
It is grid-connected or have generating set off-grid if any new generating set) when, it needs to recalculate the reactive-load compensation of each generating set
It is worth Δ Qn。
In one embodiment of the invention, in the reactive power regulated quantity according to each generating set, each hair is adjusted
Before the reactive power of motor group, the suppressing method of the generation of electricity by new energy field harmonic wave of the embodiment of the present invention can also include：According to
The maximum reactive power of each generating set, minimum reactive power, current reactive power and default overtone order, determine each
The reactive power adjustment factor of generating set.
The reactive power regulated quantity of each generating set of basis of the embodiment of the present invention, adjusts the idle of each generating set
Power can include：According to the reactive power regulated quantity of each generating set, the rated power of each generating set, Mei Gefa
The current reactive power of motor group and the reactive power adjustment factor of each generating set, adjust the idle of each generating set
Power.
In one embodiment of the invention, according to the reactive power regulated quantity of each generating set, each generating set
Rated power, the current reactive power of each generating set and the reactive power adjustment factor of each generating set, adjust
The reactive power of each generating set, can include：According to the reactive power regulated quantity of each generating set, each generating set
Rated power, the current reactive power of each generating set and the reactive power adjustment factor of each generating set, calculate
The target reactive power of each generating set；According to the target reactive power of each generating set, each generating set is adjusted
Reactive power.
Illustratively, it is illustrated by taking the 2nd generating set as an example further below.
The target reactive power of the 2nd generating set is calculated according to expression (6).
Wherein, Q 'nFor the target reactive power of n-th generating set,Current idle work(for n-th generating set
Rate, KnReactive power adjustment factor for n-th generating set.
AndThat is KnFor 1,WithMinimum value in three, wherein,For the maximum reactive power of n-th generating set,It is n-th
The minimum reactive power of generating set.
In one embodiment of the invention,For the reactive power for calculating and setting beforehand through existing method.
After the target reactive power for calculating the 2nd generating set, according to the target reactive power of the 2nd generating set,
Adjust the reactive power of the 2nd generating set.
In one embodiment of the invention, according to the target reactive power of each generating set, each generator is adjusted
The reactive power of group, can include：For each generating set, if the target reactive power of the generating set is more than the generator
The maximum reactive power of group, the reactive power for adjusting the generating set is the maximum reactive power of the generating set.
Illustratively, it is illustrated by taking the 2nd generating set as an example further below.
Assuming that the target reactive power Q of the 2nd generating set2' more than the maximum reactive power of the 2nd generating setThen the reactive power of the 2nd generating set of adjustment is
In one embodiment of the invention, according to the target reactive power of each generating set, each generator is adjusted
The reactive power of group, can include：For each generating set, if the target reactive power of the generating set is less than the generator
The maximum reactive power of group, the reactive power for adjusting the generating set is the minimum reactive power of the generating set.
Illustratively, it is illustrated by taking the 2nd generating set as an example further below.
Assuming that the target reactive power Q of the 2nd generating set2' less than the minimum reactive power of the 2nd generating setThen the reactive power of the 2nd generating set of adjustment is
In one embodiment of the invention, according to the target reactive power of each generating set, each generator is adjusted
The reactive power of group, can include：For each generating set, if the target reactive power of the generating set is not less than the power generation
The minimum reactive power of unit and the maximum reactive power for being not more than the generating set adjust the reactive power of the generating set
Target reactive power for the generating set.
Illustratively, it is illustrated by taking the 2nd generating set as an example further below.
Assuming that the target reactive power Q of the 2nd generating set '2Not less than the minimum reactive power of the 2nd generating setAnd no more than the maximum reactive power of the 2nd generating setThen the reactive power of the 2nd generating set of adjustment is
Q2。
Correspondingly, it can adjust the reactive power of the 2nd generating set and the 3rd generating set as procedure described above.
Again due to power factorWherein, cos φnFor n-th generating set power because
Number, PnRated power for n-th generating set；QnReactive power after being adjusted for n-th generating set.
After being adjusted by above-mentioned reactive power, the power factor of each generating set differs, and power-factor angle is not yet
It is identical, and then the phase angle of the harmonic wave of each generating set also differs, and then the harmonic wave of each generating set of wind power plant will
Destructive interference, the destructive interference principle based on wave occurs, the harmonic wave with two generating sets at opposite phase angle will be cancelled.
Therefore it can inhibit the harmonic wave of generating field grid entry point.
The suppressing method of the generation of electricity by new energy field harmonic wave of the embodiment of the present invention, by adjusting the idle work(of each generating set
Rate changes the power factor of each generating set, and the power factor for making each generating set is different, and then make each hair
The phase angle of motor group is different, can inhibit the harmonic wave of generating field grid entry point；And without using wave filter or have
The reactive-load compensation equipment of harmonic restraining function, reduces cost.
The core of the embodiment of the present invention is power factor when allowing each generating set to run mutual not phase in the reasonable scope
Together, can reduce grid entry point harmonic wave be unlikely to again influence fundamental wave when waveform.So the embodiment of the present invention employs
The algorithm of idle set point randomization, upsets the idle order of mean allocation in the prior art, but be to maintain its idle summation not
Become.
As shown in Fig. 2, Fig. 2 shows idle control of the generation of electricity by new energy field provided in an embodiment of the present invention to generating set
Policy map.
Pass through the electricity of voltage transformer pt/Current Transmit secondary circuit acquisition control point (namely grid entry point PCC)
Piezoelectricity flow data (i.e. control point CT/PT secondary circuits acquisition signal) calculates the active power, reactive power and power at control point
Factor, and the order (i.e. scheduling (or local) order V/Q/Cos) at control point is received, whether judge calculated reactive power
Meet the reactive power required by received order, if not satisfied, then using idle mean allocation algorithm to each power generation
The reactive power of unit is allocated, and then the reactive power of each generating set is adjusted by idle randomized algorithm again
Section so that power factor during each generating set operation is different.
The way of the mainstream of the REACTIVE POWER/VOLTAGE CONTROL of new energy station is still the idle benefit installed additional using new energy at present
Device is repaid to control the REACTIVE POWER/VOLTAGE of wind power plant.But the dynamic passive compensation equipment of new energy station has price to hold high
The expensive and high distinct disadvantage of power consumption.By taking the wind power plant of a 50MW capacity as an example, the valency of dynamic reactive compensation device is installed additional
Lattice are more than 1,000,000 RMB, while annual power consumption is in 1,000,000 kW.h or so, while later maintenance cost is high and equipment
It takes up a large area.The embodiment of the present invention can accomplish the function of inhibition harmonic wave, and the harmonic content of grid entry point is reduced to standard will
Within the scope of asking, the adjusting of traditional reactive power compensator can be cancelled, greatly improve the on-road efficiency of new energy station, and energy
Meet the requirement of new energy access system standard well.
Corresponding with above-mentioned embodiment of the method, the embodiment of the present invention also provides a kind of inhibition of generation of electricity by new energy field harmonic wave
Device.
Fig. 3 shows the structure diagram of the restraining device of generation of electricity by new energy field provided in an embodiment of the present invention harmonic wave.Newly
The restraining device of energy generating field harmonic wave can include：
Acquisition module 301, for obtaining the rated power of each generating set of generation of electricity by new energy field.
First determining module 302 for the rated power according to each generating set, determines the idle of each generating set
Power compensating value.
Second determining module 303, for the idle of the rated power according to each generating set and each generating set
Power compensating value determines the reactive power regulated quantity of each generating set.
Adjustment module 304 for the reactive power regulated quantity according to each generating set, adjusts the nothing of each generating set
Work(power so that power factor during each generating set operation is different, inhibits the harmonic wave of generating field.
In one embodiment of the invention, the second determining module 303 of the embodiment of the present invention, including：
First computing unit for the reactive power compensation value according to each generating set, calculates the idle work(of generating field
The sum of rate offset；
Second computing unit for the rated power according to each generating set, calculates the sum of rated power of generating field；
Determination unit, for according to each generating set reactive power compensation value, the rated power of each generating set,
The sum of reactive power compensation value and the sum of rated power determine the reactive power regulated quantity of each generating set.
In one embodiment of the invention, determination unit is specifically used for：
For each generating set, using the quotient of the rated power of the generating set and the sum of rated power as among first
Value；Using the product of the sum of the first median and reactive power compensation value as the second median；By the idle work(of the generating set
The difference of rate offset and the second median is determined as the reactive power regulated quantity of the generating set.
In one embodiment of the invention, the first determining module 302, specifically can be used for：
By the quotient of overtone order that pi and generating field needs inhibit, the maximum power angle as each generating set；
For each generating set, a power angle is randomly selected in the range of power angle, by the specified of the generating set
The product of power and the tangent value of selected power angle is determined as the reactive power compensation value of the generating set, wherein, power angle
Ranging from from negative maximum power angle to positive maximum power angle.
In one embodiment of the invention, the restraining device of the generation of electricity by new energy field harmonic wave of the embodiment of the present invention can be with
Including：
Third determining module (not shown), for the maximum reactive power, minimum idle according to each generating set
Power, current reactive power and default overtone order determine the reactive power adjustment factor of each generating set.
The adjustment module 304 of the embodiment of the present invention, specifically can be used for：
According to the reactive power regulated quantity of each generating set, the rated power of each generating set, each generating set
Current reactive power and each generating set reactive power adjustment factor, adjust the reactive power of each generating set.
In one embodiment of the invention, the adjustment module 304 of the embodiment of the present invention, can include：
Computing unit, for according to each generating set reactive power regulated quantity, the rated power of each generating set,
Each current reactive power of generating set and the reactive power adjustment factor of each generating set, calculate each generating set
Target reactive power；
Unit is adjusted, for the target reactive power according to each generating set, adjusts the idle work(of each generating set
Rate.
In one embodiment of the invention, the adjusting unit of the embodiment of the present invention, specifically can be used for：
For each generating set, if the target reactive power of the generating set is more than the idle work(of maximum of the generating set
Rate, the reactive power for adjusting the generating set is the maximum reactive power of the generating set.
In one embodiment of the invention, the adjusting unit of the embodiment of the present invention, specifically can be used for：
For each generating set, if the target reactive power of the generating set is less than the idle work(of maximum of the generating set
Rate, the reactive power for adjusting the generating set is the minimum reactive power of the generating set.
In one embodiment of the invention, the adjusting unit of the embodiment of the present invention, specifically can be used for：
For each generating set, if the target reactive power of the generating set is idle not less than the minimum of the generating set
Power and the maximum reactive power for being not more than the generating set, the reactive power for adjusting the generating set are the generating set
Target reactive power.
Each section details of the restraining device of the generation of electricity by new energy field harmonic wave of the embodiment of the present invention and the sheet of figure 1 above description
The suppressing method of the generation of electricity by new energy field harmonic wave of inventive embodiments is similar, and details are not described herein for the embodiment of the present invention, related part
Illustrate referring to the part of embodiment of the method.
The restraining device of the generation of electricity by new energy field harmonic wave of the embodiment of the present invention, by adjusting the idle work(of each generating set
Rate changes the power factor of each generating set, and the power factor for making each generating set is different, and then make each hair
The phase angle of motor group is different, can inhibit the harmonic wave of generating field grid entry point；And without using wave filter or have
The reactive-load compensation equipment of harmonic restraining function, reduces cost.
Fig. 4 shows the suppressing method that can realize generation of electricity by new energy field harmonic wave according to embodiments of the present invention and device
The structure chart of the exemplary hardware architecture of computing device.As shown in figure 4, computing device 400 includes input equipment 401, input connects
Mouth 402, central processing unit 403, memory 404, output interface 405 and output equipment 406.Wherein, input interface 402, in
Central processor 403, memory 404 and output interface 405 are connected with each other by bus 410, and input equipment 401 and output are set
Standby 406 are connect respectively by input interface 402 and output interface 405 with bus 410, so with other groups of computing device 400
Part connects.
Specifically, input equipment 401 is received from external input information, and is passed through input interface 402 and will be inputted information
It is transmitted to central processing unit 403；Central processing unit 403 is based on the computer executable instructions stored in memory 404 to input
Information is handled to generate output information, and output information is temporarily or permanently stored in memory 404, is then passed through
Output information is transmitted to output equipment 406 by output interface 405；Output information is output to computing device 400 by output equipment 406
Outside for users to use.
That is, computing device shown in Fig. 4 can also be implemented as the inhibition controller of generation of electricity by new energy field harmonic wave
(controller for inhibiting generation of electricity by new energy field harmonic wave), which can include：It is stored with the storage of executable program code
Device；And processor, the processor can realize what is described with reference to Fig. 1 to Fig. 3 when reading and performing executable program code
The suppressing method and device of generation of electricity by new energy field harmonic wave, in one embodiment of the invention, computing device shown in Fig. 4 also may be used
To be implemented as the field grade controller for the generation of electricity by new energy field for having the function of inhibiting generation of electricity by new energy field harmonic wave.
The embodiment of the present invention also provides a kind of computer readable storage medium, is stored on the computer readable storage medium
Computer program instructions；The computer program instructions realize generation of electricity by new energy provided in an embodiment of the present invention when being executed by processor
The suppressing method of field harmonic wave.
It should be clear that the invention is not limited in specific configuration described above and shown in figure and processing.
For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, several tools have been described and illustrated
The step of body, is as example.But procedure of the invention is not limited to described and illustrated specific steps, this field
Technical staff can be variously modified, modification and addition or suitable between changing the step after the spirit for understanding the present invention
Sequence.
Structures described above frame functional block shown in figure can be implemented as hardware, software, firmware or their group
It closes.When realizing in hardware, it may, for example, be electronic circuit, application-specific integrated circuit (ASIC), appropriate firmware, insert
Part, function card etc..When being realized with software mode, element of the invention is used to perform program or the generation of required task
Code section.Either code segment can be stored in machine readable media program or the data-signal by being carried in carrier wave is passing
Defeated medium or communication links are sent." machine readable media " can include being capable of any medium of storage or transmission information.
The example of machine readable media includes electronic circuit, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), soft
Disk, CD-ROM, CD, hard disk, fiber medium, radio frequency (RF) link, etc..Code segment can be via such as internet, inline
The computer network of net etc. is downloaded.
It should also be noted that, the exemplary embodiment referred in the present invention, is retouched based on a series of step or device
State certain methods or system.But the present invention is not limited to the sequence of above-mentioned steps, that is to say, that can be according in embodiment
The sequence referred to performs step, may also be distinct from that the sequence in embodiment or several steps are performed simultaneously.
More than, specific embodiment only of the invention, it is apparent to those skilled in the art that, in order to
Convenienct and succinct, the specific work process of the system of foregoing description, module and unit of description can refer to preceding method and implement
Corresponding process in example, details are not described herein.It should be understood that protection scope of the present invention is not limited thereto, it is any to be familiar with this skill
The technical staff in art field in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions, these
Modifications or substitutions should be covered by the protection scope of the present invention.
Claims (14)
1. a kind of suppressing method of generation of electricity by new energy field harmonic wave, which is characterized in that the method includes：
Obtain the rated power of each generating set of generation of electricity by new energy field；
According to the rated power of each generating set, the reactive power compensation value of each generating set is determined；
According to the reactive power compensation value of the rated power of each generating set and each generating set, institute is determined
State the reactive power regulated quantity of each generating set；
According to the reactive power regulated quantity of each generating set, the reactive power that each generating set provides is adjusted,
So that power factor during each generating set operation is different, inhibit the harmonic wave of the generating field.
2. according to the method described in claim 1, it is characterized in that, the rated power according to each generating set with
And the reactive power compensation value of each generating set, determine the reactive power regulated quantity of each generating set, including：
According to the reactive power compensation value of each generating set, the sum of reactive power compensation value of the generating field is calculated；
According to the rated power of each generating set, the sum of rated power of the generating field is calculated；
According to the reactive power compensation value of each generating set, the rated power, described idle of each generating set
The sum of power compensating value and the sum of the rated power determine the reactive power regulated quantity of each generating set.
3. according to the method described in claim 2, it is characterized in that, described mend according to the reactive power of each generating set
The sum of the sum of value, the rated power of each generating set, described reactive power compensation value and described rated power are repaid, really
The reactive power regulated quantity of fixed each generating set, including：
For each generating set, using the quotient of the sum of the rated power of the generating set and the rated power as first
Median；
Using the product of the sum of first median and the reactive power compensation value as the second median；
By the reactive power compensation value of the generating set and the difference of second median, it is determined as the idle of the generating set
Power regulation amount.
4. according to the method described in claim 1, it is characterized in that, the rated power according to each generating set,
Determine the reactive power compensation value of each generating set, including：
By the quotient of overtone order that pi and generating field needs inhibit, the maximum power as each generating set
Angle；
For each generating set, a power angle is randomly selected in the range of power angle, by the specified of the generating set
The product of power and the tangent value of selected power angle is determined as the reactive power compensation value of the generating set, wherein, the work(
Rate angular region is from the negative maximum power angle to the positive maximum power angle.
5. according to the method described in claim 1, it is characterized in that, in the reactive power according to each generating set
Regulated quantity, before the reactive power for adjusting each generating set, the method further includes：
According to the maximum reactive power of each generating set, minimum reactive power, current reactive power and default harmonic wave
Number determines the reactive power adjustment factor of each generating set；
The reactive power regulated quantity according to each generating set adjusts the idle work(that each generating set provides
Rate, including：
According to the reactive power regulated quantity of each generating set, the rated power, described each of each generating set
The reactive power adjustment factor of the current reactive power of generating set and each generating set adjusts each power generation
The reactive power that unit provides.
6. the according to the method described in claim 5, it is characterized in that, reactive power tune according to each generating set
Section amount, the rated power of each generating set, the current reactive power of each generating set and each hair
The reactive power adjustment factor of motor group adjusts the reactive power that each generating set provides, including：
According to the reactive power regulated quantity of each generating set, the rated power, described each of each generating set
The reactive power adjustment factor of the current reactive power of generating set and each generating set calculates each power generation
The target reactive power of unit；
According to the target reactive power of each generating set, the reactive power that each generating set provides is adjusted.
7. the restraining device of a kind of generation of electricity by new energy field harmonic wave, which is characterized in that described device includes：
Acquisition module, for obtaining the rated power of each generating set of generation of electricity by new energy field；
First determining module for the rated power according to each generating set, determines the nothing of each generating set
Reactive power compensator value；
Second determining module, for the idle of the rated power according to each generating set and each generating set
Power compensating value determines the reactive power regulated quantity of each generating set；
Adjustment module for the reactive power regulated quantity according to each generating set, adjusts each generating set
Reactive power so that power factor during each generating set operation is different, inhibits the harmonic wave of the generating field.
8. device according to claim 7, which is characterized in that second determining module, including：
First computing unit for the reactive power compensation value according to each generating set, calculates the nothing of the generating field
The sum of reactive power compensator value；
Second computing unit for the rated power according to each generating set, calculates the rated power of the generating field
The sum of；
Determination unit, for according to each generating set reactive power compensation value, each generating set it is specified
The sum of power, described reactive power compensation value and the sum of the rated power determine the idle work(of each generating set
Rate regulated quantity.
9. device according to claim 8, which is characterized in that the determination unit is specifically used for：
For each generating set, using the quotient of the sum of the rated power of the generating set and the rated power as first
Median；
Using the product of the sum of first median and the reactive power compensation value as the second median；
By the reactive power compensation value of the generating set and the difference of second median, it is determined as the idle of the generating set
Power regulation amount.
10. device according to claim 7, which is characterized in that first determining module is specifically used for：
By the quotient of overtone order that pi and generating field needs inhibit, the maximum power as each generating set
Angle；
For each generating set, a power angle is randomly selected in the range of power angle, by the specified of the generating set
The product of power and the tangent value of selected power angle is determined as the reactive power compensation value of the generating set, wherein, the work(
Rate angular region is from the negative maximum power angle to the positive maximum power angle.
11. device according to claim 7, which is characterized in that described device further includes：
Third determining module, for the maximum reactive power, minimum reactive power, current idle according to each generating set
Power and default overtone order determine the reactive power adjustment factor of each generating set；
The adjustment module, is specifically used for：
According to the reactive power regulated quantity of each generating set, the rated power, described each of each generating set
The reactive power adjustment factor of the current reactive power of generating set and each generating set adjusts each power generation
The reactive power of unit.
12. according to the devices described in claim 11, which is characterized in that the adjustment module, including：
Computing unit, for according to each generating set reactive power regulated quantity, each generating set it is specified
The reactive power adjustment factor of power, the current reactive power of each generating set and each generating set, meter
Calculate the target reactive power of each generating set；
Unit is adjusted, for the target reactive power according to each generating set, adjusts the nothing of each generating set
Work(power.
13. the inhibition controller of a kind of generation of electricity by new energy field harmonic wave, which is characterized in that the controller includes：Memory and place
Manage device；
The memory is used to store executable program code；
The processor is any one with perform claim requirement 1-6 for reading the executable program code stored in the memory
The suppressing method of generation of electricity by new energy field harmonic wave described in.
14. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program instruction；The computer program instructions realize new energy as claimed in any one of claims 1 to 6 when being executed by processor
The suppressing method of source generating field harmonic wave.
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| CN104917181A (en) * | 2015-06-30 | 2015-09-16 | 华为技术有限公司 | Reactive and harmonic wave compensation method, device and system |
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