CN110492532A - Frequency modulation method, device and the equipment of power supply system - Google Patents
Frequency modulation method, device and the equipment of power supply system Download PDFInfo
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- CN110492532A CN110492532A CN201910733439.8A CN201910733439A CN110492532A CN 110492532 A CN110492532 A CN 110492532A CN 201910733439 A CN201910733439 A CN 201910733439A CN 110492532 A CN110492532 A CN 110492532A
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- frequency modulation
- power grid
- supply system
- power supply
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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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of frequency modulation method of power supply system, device and equipment, the power supply system includes generating set and energy storage device, the power supply system is used to power by regional power grid, and the frequency modulation method is the following steps are included: access the regional power grid for the generating set as the first frequency modulation unit；The regional power grid is accessed using the energy storage device as the second frequency modulation unit；First frequency modulation unit and second frequency modulation unit operation are controlled, to adjust the frequency of the regional power grid.Technical solution of the present invention can be effectively reduced the load of generating set itself, reduce equipment attrition, and reduce power generation consumption.
Description
Technical field
The present invention relates to laser detection technique field more particularly to a kind of frequency modulation method of power supply system, device and set
It is standby.
Background technique
Mains frequency is the one of them important indicator for measuring power quality, and maintaining the stability of mains frequency is electric power fortune
The vital task of battalion's system with the access of extra-high voltage grid, and greatly develops the generations of electricity by new energy such as wind energy, solar energy, this
During a little new electricity generation system access power grids, causes the frequency of power grid to generate certain fluctuation, thus give the frequency tune of power grid
Whole to bring new challenge, generating set must more participate in power grid frequency modulation task thus, but pass through generator set control
The conversion of the energy needs the process by a series of complex, and the time of adjustment is delayed relatively, and the load of generating set itself
It increases, causes equipment attrition serious, power generation consumes a series of problems, such as increasing.
Summary of the invention
The main object of the present invention is to provide the frequency modulation method, device and equipment of a kind of power supply system, it is intended to solve existing
Technical solution is by generating set frequency modulation, and the load rise of generating set itself, equipment attrition is serious, and what power generation consumption was increased asks
Topic.
To achieve the above object, the present invention proposes a kind of frequency modulation method of power supply system, and the power supply system includes power generation
Unit and energy storage device, the power supply system are used to power by regional power grid, the described method comprises the following steps:
The regional power grid is accessed using the generating set as the first frequency modulation unit；
The regional power grid is accessed using the energy storage device as the second frequency modulation unit；
First frequency modulation unit and second frequency modulation unit operation are controlled, to adjust the frequency of the regional power grid.
Optionally, the generating set is thermal power generation unit, and the thermal power generation unit is by putting into boiler to boiler
Fuel, boiler combustion pushes the thermal power generation unit operation to produce electricl energy, described using the generating set as the first frequency modulation
Include: before the step of unit access regional power grid
Obtain the steam flow signal of the generating set；
The input amount of the boiler oil is controlled according to the steam flow signal.
Optionally, the power supply system further includes bi-directional power conversion device and boosting potential device, the power supply system
Including station-service power grid, the described the step of energy storage device is accessed the regional power grid as the second frequency modulation unit, includes:
The bi-directional power conversion device is accessed into the station-service power grid；
The energy storage device and the bi-directional power conversion device is in parallel；
The bi-directional power conversion device and the energy storage device are linked into the area by the boosting potential device
In the power grid of domain.
Optionally, the power supply system further includes automatic control unit, and the automatic control unit controls the generator
Group and energy storage device operating, the automatic control unit are connected with load instruction response circuit, the control described first
The step of frequency modulation unit and second frequency modulation unit operation, frequency to adjust the regional power grid includes:
Control the load instruction response circuit output response instruction；
It is instructed according to the output response, generates preparatory response parameter；
According to the preparatory response parameter, the generating set and/or energy storage device early response operating are controlled, with
Shorten the time of frequency modulation response.
Optionally, the generating set includes steam turbine valve, described according to the preparatory response parameter, controls the power generation
Unit and/or the energy storage device early response operating, with shorten frequency modulation response time the step of include:
According to the preparatory response parameter, the steam turbine valve of the generating set is adjusted in advance；And/or
According to the preparatory response parameter, the energy storage device charge or discharge are controlled in advance.
Optionally, the control first frequency modulation unit and second frequency modulation unit operation, to adjust the region
The step of frequency of power grid includes:
First frequency modulation unit is controlled as basic frequency modulation, second frequency modulation unit is to assist frequency modulation, described in adjusting
The frequency of regional power grid；Or
Second frequency modulation unit is controlled as basic frequency modulation, first frequency modulation unit is to assist frequency modulation, described in adjusting
The frequency of regional power grid.
In addition, to achieve the goals above, the present invention provides a kind of frequency modulation device of power supply system, the power supply system packet
Generating set and energy storage device are included, the power supply system is used to power by regional power grid, and the frequency modulation device includes:
Link block is used to access the regional power grid for the generating set as the first frequency modulation unit, and, it is used for
The regional power grid is accessed using the energy storage device as the second frequency modulation unit；
Control module, for controlling first frequency modulation unit and second frequency modulation unit operation, to adjust the area
The frequency of domain power grid.
Optionally, the generating set is thermal power generation unit, and the thermal power generation unit is by putting into boiler to boiler
Fuel, boiler combustion push the thermal power generation unit operation to produce electricl energy, and the frequency modulation device includes:
Module is obtained, for obtaining the steam flow signal of the generating set；
The control module is also used to control the input amount of the boiler oil according to the steam flow signal.
Optionally, the power supply system further includes bi-directional power conversion device and boosting potential device, the power supply system
Including station-service power grid, the frequency modulation device includes:
Parallel module, for the energy storage device and the bi-directional power conversion device is in parallel；
The link block is also used to the bi-directional power conversion device accessing the station-service power grid, and, for leading to
It crosses boosting potential device the bi-directional power conversion device and the energy storage device are linked into the regional power grid.
In addition, to achieve the goals above, the present invention provides a kind of frequency modulation equipment of power supply system, the frequency modulation equipment packet
It includes: memory, processor and being stored in the frequency modulation program that can be run on the memory and on the processor；The frequency modulation
Program realizes the step of frequency modulation method as described above when being executed by the processor.
In technical solution of the present invention, electric energy is transmitted to user terminal by regional power grid for generating electricity by generating set, is stored up
Energy device stores electric energy, and energy storage device is connected similarly in regional power grid, when the frequency of regional power grid reduces, generating set
Generating capacity, while the electric energy of energy storage device release are improved, increases to regional power grid power Transmission, improves the frequency of regional power grid
Rate, when the frequency of regional power grid increases, generating set reduces generating capacity, while energy storage device starts to store electric energy, reduces
To regional power grid power Transmission, the frequency of regional power grid is reduced, it follows that combining by both generating set and energy storage device
Operation can be effectively reduced the load of generating set itself, reduce equipment attrition, reduce consumption.
Detailed description of the invention
Fig. 1 is the flow diagram of the frequency modulation method first embodiment of power supply system of the invention；
Fig. 2 is the flow diagram of the frequency modulation method second embodiment of power supply system of the invention；
Fig. 3 is the flow diagram of the frequency modulation method 3rd embodiment of power supply system of the invention；
Fig. 4 is the flow diagram of the frequency modulation method fourth embodiment of power supply system of the invention；
Fig. 5 is the flow diagram of the 5th embodiment of frequency modulation method of power supply system of the invention；
Fig. 6 is the flow diagram of the frequency modulation method sixth embodiment of power supply system of the invention；
Fig. 7 is the flow diagram of the 7th embodiment of frequency modulation method of power supply system of the invention；
Fig. 8 is the flow diagram of the 8th embodiment of frequency modulation method of power supply system of the invention；
Fig. 9 is the flow diagram of the automatic control system of power supply system of the invention；
Figure 10 is that power supply system generating set of the invention is connected to instruction to the practical schematic diagram for starting frequency modulation；
Figure 11 is that power supply system energy storage device group of the invention is connected to instruction to the practical schematic diagram for starting frequency modulation；
Figure 12 is the connection schematic diagram of the frequency modulation device of power supply system of the invention；
Figure 13 is the logic schematic diagram of the load instruction response circuit of power supply system of the invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Link block | 300 | Obtain module |
| 200 | Control module | 400 | Parallel module |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Usually a national mains frequency is fixed, promising this countries and regions supply electrical equipment
Producer must according to this frequency making apparatus could normal use, specific frequency number by every country oneself according to the world
Habitual definition or oneself definition, such as mains frequency are fixed as 50Hz, i.e., 50 second periodicities change in one second, but with wind
Can and the development of solar power generation will lead to power grid when wind power generation unit or solar power generation unit are linked into power grid
Frequency increase or the electricity consumption of user terminal increases suddenly, the frequency that will lead to power grid reduces.
As shown in fig.1, the first embodiment of the present invention, a kind of frequency modulation method of power supply system, power supply system include hair
Motor group and energy storage device, power supply system be used for by regional power grid power supply, method the following steps are included:
Step S10, using generating set as the first frequency modulation unit access area power grid；
Wherein, generating set is used to generate electricity, such as the thermal energy of will burn coal or the burning generation of other fossil feedstocks, conversion
For electric energy, can also be wind energy, solar energy or tidal fluctuations energy and water conservancy potential energy is electric energy, generating set conduct
When generator unit access area power grid, when the frequency of regional power grid generates fluctuation, the effect of adjustment frequency is also undertaken, mainly
Be realize adjustment by reducing or increasing the generated energy of generating set, for example, regional power grid frequency increase after, generator
Group needs to reduce generated energy, and after regional power grid frequency reduces, generating set needs to increase generated energy, carrys out stability region power grid with this
Frequency, the voltage of the regional power grid is generally 220 kilovolts of supergrid.
Step S20, using energy storage device as the second frequency modulation unit access area power grid；
Wherein, energy storage device is for storing and discharging electric energy, it is possible to understand that energy storage device is battery, regional power grid frequency
After raising, energy storage device needs to reduce storage energy, reduces the frequency of regional power grid, if, after regional power grid frequency reduces,
Energy storage device needs to discharge the electric energy of storage, increases the frequency of regional power grid, the frequency of stability region power grid is carried out with this, this
Outside, safety margin has generally been set as needed in the stored energy capacitance of energy storage device, that is, the true capacity ratio of energy storage device is set
Meter capacity improves, such as the capacity of energy storage device is 9MW, safety margin 0.5MW, then the practical appearance of energy storage device
Amount is 9.5MW.
Step S30 controls the first frequency modulation unit and the operation of the second frequency modulation unit, with the frequency of adjustment region power grid.
The generating set of first frequency modulation unit realizes the reduction or raising of generated energy, needs certain time, and
The energy storage device of second frequency modulation unit starts to store electric energy or the time of release electric energy is shorter, can effectively make up generator
Group adjustment generated energy needs the shortcomings that postponing certain time, both the first frequency modulation unit and the second frequency modulation unit combined operating, energy
Enough quickly and effectively adjustment region mains frequencies.
In technical solution of the present invention, electric energy is transmitted to user terminal by regional power grid for generating electricity by generating set, is stored up
Energy device stores electric energy, and energy storage device is connected similarly in regional power grid, when the frequency of regional power grid reduces, generating set
Generating capacity, while the electric energy of energy storage device release are improved, increases to regional power grid power Transmission, improves the frequency of regional power grid
Rate, when the frequency of regional power grid increases, generating set reduces generating capacity, while energy storage device starts to store electric energy, reduces
To regional power grid power Transmission, the frequency of regional power grid is reduced, it follows that combining by both generating set and energy storage device
Operation can be effectively reduced the load of generating set itself, reduce equipment attrition, reduce consumption.
As shown in fig.2, proposing the second embodiment of the present invention, generator on the basis of first embodiment of the invention
Group is thermal power generation unit, and for thermal power generation unit by putting into boiler oil to boiler, boiler combustion pushes thermal power generation unit
Operation produces electricl energy, in general boiler oil refers to coal and oxygen, can also be air, and boiler combustion makes water reach boiling point, water
Steam is generated after boiling, the blade rotation of Steam Actuation thermal power generation unit is as a result, converted chemical heat energy by boiler combustion
For mechanical energy, then electric energy is converted by mechanical energy, using generating set as the step S10 of the first frequency modulation unit access area power grid
Include: before
Step S01, obtains the steam flow signal of generating set, AGC (automation generator contro, from
Dynamic Generation Control) control system, it is mainly used to according to instruction control power plant power generation, while power generation process all data is carried out
Monitoring, traditionally in AGC control system, adjustment boiler oil is to realize adjustment according to air quantity-coal amount adjustment curve, is revised as wind
Amount-steam flow curve.
Step S02 controls the input amount of boiler oil according to steam flow signal, and pressure fan movable vane can so fluctuated
Reducing, total blast volume fluctuation reduces, combustion chamber draft and steam temperature stability improve, thus guarantee that generating set enters under hopping pattern,
Generating set safe and stable operation.
As shown in fig.3, proposing the third embodiment of the present invention, power supply system on the basis of first embodiment of the invention
System further includes bi-directional power conversion device and boosting potential device, and power supply system includes station-service power grid, using energy storage device as the
The step S20 of two frequency modulation unit access area power grids includes:
Step S210, by bi-directional power conversion device access station service electrical net；
Wherein, the voltage of station-service power grid is generally 6.3kV, and bi-directional power conversion device is charging, electric discharge integrated design,
Bi-directional power conversion device can control energy and realize flowing, i.e. realization AC system and direct current between energy storage device and power grid
The energy in bidirectional flow of system.
Step S220, energy storage device and bi-directional power conversion device is in parallel；
Pass through, energy storage device and bi-directional power conversion device is in parallel, it can effectively realize the charging box to energy storage device
Control of discharge.
Bi-directional power conversion device and energy storage device are linked into regional power grid by boosting potential device by step S230
In.
Wherein, boost potential device, refers to and starts voltage instantaneous, is the another of same frequency the voltage transformation of a certain numerical value
The higher voltage of one numerical value, that is, the voltage of 6.3kV is increased into the voltage for 220kV, it can quickly be filled by energy storage device
The effect of electricity or electric discharge, the power grid for quickly generating fluctuation to frequency realize frequency modulation, stability region mains frequency.
In addition to this, energy storage device is connected with station-service power grid, in the case where being in an emergency, such as when station-service electric fault, storage
Energy device can discharge the electric energy of storage, and the illumination of supply power plant and maintenance equipment operate normally use.
Refering to shown in Fig. 4 and Figure 13, on the basis of first embodiment of the invention, the fourth embodiment of the present invention is proposed,
Power supply system further includes automatic control unit, and automatic control unit controls generating set and energy storage device operating, is automatically controlled single
Member is connected with load instruction response circuit, and the automatic control unit refers to AGC control system, controls the first frequency modulation unit and the
Two frequency modulation units are run, and include: with the step S30 of the frequency of adjustment region power grid
Step S310, control load instruction response circuit output response instruction；
Wherein, load instruction response circuit is connected in AGC control system, load instruction response circuit receives instruction, and
Load up or load down are selected according to the instruction, after having selected corresponding control logic, output response instruction.
Step S320 instructs according to output response, generates preparatory response parameter；
Wherein, as shown in fig.9, AGC control system receives after responding instruction, preparatory response parameter is generated, it is general next
It says, the frequency of regional power grid fluctuates not yet at this time, that is to say, that can know region in advance according to preparatory response parameter
The frequency of power grid will generate fluctuation, thus carry out control operation in advance convenient for AGC control system, the beam worker before realizing frequency modulation
Make.
Step S330 controls generating set and/or energy storage device early response operating, according to preparatory response parameter with contracting
The time that minor frequency response is answered.
Wherein, as shown in fig.10, in general, generating set adjustment generated energy needs certain time, in other words, from
Change boiler oil input amount, rotated to Steam Actuation generating set blade, then to electricity is generated, such case leads to generator
Since group, to frequency modulation effect is generated, there is regular hour delay being connected to frequency modulation order, provides control by preparatory response parameter
Generating set operating, the time of the frequency modulation that can effectively shorten response, or even can start while mains frequency generates variation
Frequency modulation, in addition, energy storage device is also required to the time from the storage that is discharged into of electric energy refering to fig. 1 shown in 1, in advance according to response in advance
The operating of state modulator energy storage device, can equally shorten the time of the response of frequency modulation, the frequency modulation response time of energy storage device is compared
Generating set is more nearly the instruction issuing time.
Further, generating set includes steam turbine valve, according to preparatory response parameter, controls generating set and/or energy storage
Device early response operates, and includes: with the step S330 for shortening the time of frequency modulation response
Refering to shown in Fig. 5 and Fig. 9, step S331, according to preparatory response parameter, the steam turbine valve of regulator generator group in advance
Door to pre-adjust the size of generated energy, or controls boiler oil amount by adjusting the size of steam turbine valve opening in advance
Investment further realize and operate in advance to pre-adjust the size of generated energy, avoid the response time from delaying and cause mains frequency
Wave time is too long.
And/or as shown in fig.6, step S332 controls energy storage device charging in advance or puts according to preparatory response parameter
Electricity, wherein energy storage device is also required to the time from the storage that is discharged into of electric energy, controls energy storage device according to preparatory response parameter in advance
Operating, can equally shorten the time of the response of frequency modulation.
Further, the first frequency modulation unit and the operation of the second frequency modulation unit are controlled, with the step of the frequency of adjustment region power grid
Suddenly S30 includes:
As shown in fig.7, step S301, the first frequency modulation unit of control is basic frequency modulation, and the second frequency modulation unit is to assist to adjust
Frequently, with the frequency of adjustment region power grid, since comparatively electricity that generating set generates is more, can continue output electricity
The response time of stability region mains frequency, energy storage device is rapid, can rapidly enter hopping pattern, and so the two is combined
Frequency modulation can effectively be carried out.
Or, the first frequency modulation unit is to assist as shown in fig.8, step S302, the second frequency modulation unit of control are basic frequency modulation
Frequency modulation can expand the capacity of energy storage device with the frequency of adjustment region power grid, guarantee that energy storage device being capable of more long duration
Frequency adjusting is carried out, is enable to respond quickly with energy storage device for basic frequency modulation, while using generating set as frequency modulation is assisted, it can
It is further ensured that the sustainability of frequency modulation effect.
It is the control flow schematic diagram of the automatic control system of power supply system, AGC control system, by power grid tune shown in Fig. 9
The instruction of degree center input control, control instruction control to adjust steam turbine valve by generator set controller after successively transmitting, furthermore
Boiler load controller is also controlled by generator set controller, boiler oil is adjusted by boiler load controller, in addition, energy storage fills
Energy-storage battery power feedback information in setting can equally be shown by AGC control system, in order to AGC control system control
Energy storage device electric discharge processed or storage electric energy.
The present invention provides a kind of frequency modulation device of power supply system, refering to fig. 1 shown in 2, power supply system include generating set and
Energy storage device, power supply system are used to power by regional power grid, and frequency modulation device includes: link block 100 and control module 200.
Link block 100 is used for using generating set as the first frequency modulation unit access area power grid, and, it is used for energy storage
For device as the second frequency modulation unit access area power grid, generating set is former for generating electricity, such as by burning coal or other fossils
The thermal energy that material burning generates, is converted into electric energy, can also be and turns wind energy, solar energy or tidal fluctuations energy and water conservancy potential energy
Electric energy is turned to, when generating set is as generator unit access area power grid, when the frequency of regional power grid generates fluctuation, also to be held
The effect of load adjustment frequency, mainly realizes adjustment by reducing or increasing the generated energy of generating set, for example, region
After mains frequency increases, generating set needs to reduce generated energy, and after regional power grid frequency reduces, generating set needs to increase power generation
Amount, the frequency of stability region power grid is carried out with this, the voltage of the regional power grid is generally 220 kilovolts of supergrid.Energy storage
Device is for storing and discharging electric energy, it is possible to understand that energy storage device is battery, and after regional power grid frequency increases, energy storage device is needed
Storage energy is reduced, the frequency of regional power grid is reduced, if after regional power grid frequency reduces, energy storage device needs to discharge
The electric energy of storage is increased the frequency of regional power grid, the frequency of stability region power grid is carried out with this, in addition, the energy storage of energy storage device
Safety margin has generally been set as needed in capacity, that is, the true capacity of energy storage device has certain mention than design capacity
Height, such as the capacity of energy storage device is 9MW, safety margin 0.5MW, then the actual capacity of energy storage device is 9.5MW.
Control module 200 is for controlling the first frequency modulation unit and the operation of the second frequency modulation unit, with the frequency of adjustment region power grid
Rate, the generating set of the first frequency modulation unit realize the reduction or raising of generated energy, need certain time, and second
The energy storage device of frequency modulation unit starts to store electric energy or the time of release electric energy is shorter, can effectively make up generating set tune
Electricity of haircuting needs the shortcomings that postponing certain time, both the first frequency modulation unit and the second frequency modulation unit combined operating, can be fast
Fast effective adjustment region mains frequency.
Further, generating set is thermal power generation unit, and thermal power generation unit is by putting into boiler oil, pot to boiler
Furnace burning pushes thermal power generation unit operation to produce electricl energy, and in general boiler oil refers to coal and oxygen, can also be air, pot
Furnace burning, water reach boiling point, and boiling generates steam, and the blade rotation of Steam Actuation thermal power generation unit is fired by boiler as a result,
It burns and converts mechanical energy for chemical heat energy, then electric energy is converted by mechanical energy, frequency modulation device includes:
Module 300 is obtained, for obtaining the steam flow signal of generating set, AGC (automation generator
Contro, Automatic Generation Control) control system, it is mainly used to generate electricity according to instruction control power plant, while each to power generation process
Item data is monitored, and traditionally in AGC control system, adjustment boiler oil is to realize to adjust according to air quantity-coal amount adjustment curve
It is whole, it is revised as air quantity-steam flow curve.
Control module 200 is also used to control the input amount of boiler oil according to steam flow signal, can so make to blow
Motor-driven leaf fluctuation reduces, and total blast volume fluctuation reduces, combustion chamber draft and steam temperature stability improve, to guarantee that generating set enters tune
Under frequency mode, generating set safe and stable operation.
Further, power supply system further includes bi-directional power conversion device and boosting potential device, and power supply system includes factory
With power grid, frequency modulation device includes:
Parallel module 400, for energy storage device and bi-directional power conversion device is in parallel, wherein the voltage of station-service power grid
Generally 6.3kV, bi-directional power conversion device are charging, electric discharge integrated design, and bi-directional power conversion device can control energy
Amount realizes flowing between energy storage device and power grid, that is, realizes the energy in bidirectional flow of AC system and direct current system.
Link block 100 is also used to bi-directional power conversion device access station service electrical net, and, for passing through boosting transformation
Bi-directional power conversion device and energy storage device are linked into regional power grid by device, are passed through, and energy storage device and bidirectional power are become
Changing device is in parallel, can effectively realize the charging box control of discharge to energy storage device.In addition, boosting potential device, referring to will be electric
Moment starting is pressed, is the higher voltage of another numerical value of same frequency the voltage transformation of a certain numerical value, that is, by the electricity of 6.3kV
The voltage that it is 220kV that pressure, which increases, the effect of quick charge or electric discharge is capable of by energy storage device, quickly generates fluctuation to frequency
Power grid realize frequency modulation, stability region mains frequency.
In this implementation technical solution, electric energy is transmitted to user terminal by regional power grid for generating electricity by generating set, is stored up
Energy device stores electric energy, and energy storage device is connected similarly in regional power grid, when the frequency of regional power grid reduces, generating set
Generating capacity, while the electric energy of energy storage device release are improved, increases to regional power grid power Transmission, improves the frequency of regional power grid
Rate, when the frequency of regional power grid increases, generating set reduces generating capacity, while energy storage device starts to store electric energy, reduces
To regional power grid power Transmission, the frequency of regional power grid is reduced, it follows that combining by both generating set and energy storage device
Operation can be effectively reduced the load of generating set itself, reduce equipment attrition, reduce consumption.
The present invention provides a kind of frequency modulation equipment of power supply system, and the frequency modulation equipment includes: memory, processor and storage
On the memory and the frequency modulation program that can run on the processor；The frequency modulation equipment is deposited by calling in memory
The frequency modulation program of storage simultaneously executes following operation:
The regional power grid is accessed using the generating set as the first frequency modulation unit；
The regional power grid is accessed using the energy storage device as the second frequency modulation unit；
First frequency modulation unit and second frequency modulation unit operation are controlled, to adjust the frequency of the regional power grid.
Further, the generating set is thermal power generation unit, and the thermal power generation unit is by putting into pot to boiler
Furnace fuel, boiler combustion push the thermal power generation unit operation to produce electricl energy, and processor calls the frequency modulation stored in memory
Program, and execute following operation:
Obtain the steam flow signal of the generating set；
The input amount of the boiler oil is controlled according to the steam flow signal.
Further, the power supply system further includes bi-directional power conversion device and boosting potential device, the power supply system
System includes station-service power grid, and processor calls the frequency modulation program stored in memory, and executes following operation:
The bi-directional power conversion device is accessed into the station-service power grid；
The energy storage device and the bi-directional power conversion device is in parallel；
The bi-directional power conversion device and the energy storage device are linked into the area by the boosting potential device
In the power grid of domain.
Further, the power supply system further includes automatic control unit, and the automatic control unit controls the power generation
Unit and energy storage device operating, the automatic control unit are connected with load instruction response circuit, and processor calls storage
The frequency modulation program stored in device, and execute following operation:
Control the load instruction response circuit output response instruction；
It is instructed according to the output response, generates preparatory response parameter；
According to the preparatory response parameter, the generating set and/or energy storage device early response operating are controlled, with
Shorten the time of frequency modulation response.
Further, the generating set includes steam turbine valve, and processor calls the frequency modulation program stored in memory, and
Execute following operation:
According to the preparatory response parameter, the steam turbine valve of the generating set is adjusted in advance；
And/or according to the preparatory response parameter, the energy storage device charge or discharge are controlled in advance.
Further, processor calls the frequency modulation program stored in memory, and executes following operation:
First frequency modulation unit is controlled as basic frequency modulation, second frequency modulation unit is to assist frequency modulation, described in adjusting
The frequency of regional power grid；
Or, control second frequency modulation unit is basic frequency modulation, first frequency modulation unit is to assist frequency modulation, to adjust
State the frequency of regional power grid.
In technical solution of the present invention, electric energy is transmitted to user terminal by regional power grid for generating electricity by generating set, is stored up
Energy device stores electric energy, and energy storage device is connected similarly in regional power grid, when the frequency of regional power grid reduces, generating set
Generating capacity, while the electric energy of energy storage device release are improved, increases to regional power grid power Transmission, improves the frequency of regional power grid
Rate, when the frequency of regional power grid increases, generating set reduces generating capacity, while energy storage device starts to store electric energy, reduces
To regional power grid power Transmission, the frequency of regional power grid is reduced, it follows that combining by both generating set and energy storage device
Operation can be effectively reduced the load of generating set itself, reduce equipment attrition, reduce consumption.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of frequency modulation method of power supply system, which is characterized in that the power supply system includes generating set and energy storage device, institute
Power supply system is stated for the described method comprises the following steps by regional power grid power supply:
The regional power grid is accessed using the generating set as the first frequency modulation unit；
The regional power grid is accessed using the energy storage device as the second frequency modulation unit；
First frequency modulation unit and second frequency modulation unit operation are controlled, to adjust the frequency of the regional power grid.
2. the frequency modulation method of power supply system as described in claim 1, which is characterized in that the generating set is thermoelectric generator
Group, for the thermal power generation unit by putting into boiler oil to boiler, boiler combustion pushes the thermal power generation unit operation to produce
Raw electric energy, it is described to include: before using the generating set as the step of the first frequency modulation unit access regional power grid
Obtain the steam flow signal of the generating set；
The input amount of the boiler oil is controlled according to the steam flow signal.
3. the frequency modulation method of power supply system as described in claim 1, which is characterized in that the power supply system further includes two-way function
Rate converting means and boosting potential device, the power supply system includes station-service power grid, described using the energy storage device as second
Frequency modulation unit access the regional power grid the step of include:
The bi-directional power conversion device is accessed into the station-service power grid；
The energy storage device and the bi-directional power conversion device is in parallel；
The bi-directional power conversion device and the energy storage device are linked into the region electricity by the boosting potential device
In net.
4. the frequency modulation method of power supply system as described in claim 1, which is characterized in that the power supply system further includes controlling automatically
Unit processed, the automatic control unit control the generating set and energy storage device operating, and the automatic control unit connects
It is connected to load instruction response circuit, the control first frequency modulation unit and second frequency modulation unit operation, to adjust
The step of stating the frequency of regional power grid include:
Control the load instruction response circuit output response instruction；
It is instructed according to the output response, generates preparatory response parameter；
According to the preparatory response parameter, the generating set and/or energy storage device early response operating are controlled, to shorten
The time of frequency modulation response.
5. the frequency modulation method of power supply system as claimed in claim 4, which is characterized in that the generating set includes steam turbine valve
Door, it is described to control the generating set and/or energy storage device early response operating according to the preparatory response parameter, with
Shorten frequency modulation response time the step of include:
According to the preparatory response parameter, the steam turbine valve of the generating set is adjusted in advance；And/or
According to the preparatory response parameter, the energy storage device charge or discharge are controlled in advance.
6. the frequency modulation method of power supply system as claimed in claim 5, which is characterized in that control first frequency modulation unit
It is run with second frequency modulation unit, the step of frequency to adjust the regional power grid includes:
First frequency modulation unit is controlled as basic frequency modulation, second frequency modulation unit is to assist frequency modulation, to adjust the region
The frequency of power grid；Or
Second frequency modulation unit is controlled as basic frequency modulation, first frequency modulation unit is to assist frequency modulation, to adjust the region
The frequency of power grid.
7. a kind of frequency modulation device of power supply system, which is characterized in that the power supply system includes generating set and energy storage device, institute
Power supply system is stated for powering by regional power grid, the frequency modulation device includes:
Link block is used to access the regional power grid for the generating set as the first frequency modulation unit, and, it is used for institute
Energy storage device is stated as the second frequency modulation unit and accesses the regional power grid；
Control module, for controlling first frequency modulation unit and second frequency modulation unit operation, to adjust the region electricity
The frequency of net.
8. frequency modulation device as claimed in claim 7, which is characterized in that the generating set is thermal power generation unit, the fire
Power generator group is by putting into boiler oil to boiler, and boiler combustion pushes the thermal power generation unit operation to produce electricl energy, institute
Stating frequency modulation device includes:
Module is obtained, for obtaining the steam flow signal of the generating set；
The control module is also used to control the input amount of the boiler oil according to the steam flow signal.
9. frequency modulation device as claimed in claim 7, which is characterized in that the power supply system further includes bi-directional power conversion device
With boosting potential device, the power supply system includes station-service power grid, and the frequency modulation device includes:
Parallel module, for the energy storage device and the bi-directional power conversion device is in parallel；
The link block is also used to the bi-directional power conversion device accessing the station-service power grid, and, it is risen for passing through
The bi-directional power conversion device and the energy storage device are linked into the regional power grid by buckling pressure device.
10. a kind of frequency modulation equipment of power supply system, which is characterized in that the frequency modulation equipment includes: memory, processor and storage
On the memory and the frequency modulation program that can run on the processor；When the frequency modulation program is executed by the processor
It realizes such as the step of frequency modulation method of any of claims 1-6.
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