CN109830993A - A kind of compressed air energy storage power generating system and its phase modulation control method - Google Patents
A kind of compressed air energy storage power generating system and its phase modulation control method Download PDFInfo
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Abstract
The invention discloses a kind of compressed air energy storage power generating system and its phase modulation control method, system includes: compression air energy-storing apparatus, generator, full control excitation unit and control circuit；The generator terminal of generator is connected with power grid, compression air energy-storing apparatus is connected with the rotor of generator, full control excitation unit is connected with the excitation winding of generator, full control excitation unit is also connected with the generator terminal of generator, control circuit and each full-controlled device of full control excitation unit are respectively connected with, and control circuit is also connected in the generator terminal of compression air energy-storing apparatus and generator；Control circuit is for obtaining switching signal and control signal；Compression air energy-storing apparatus is used to adjust the revolving speed of its turbine or disconnects the connection with rotor；Full control excitation unit to power grid for directly absorbing or injecting reactive power, and the exciting current of regulator generator to power grid to absorb or inject indirectly reactive power.The present invention can be improved to power grid and provide the ability of reactive power support, and reduce operation of power networks cost.
Description
Technical field
The invention belongs to field of power systems, more particularly, to a kind of compressed air energy storage power generating system and its phase modulation
Control method.
Background technique
Scale exploitation, the grid-connected and extensive transregional conveying of centralization are the main sides of Chinese renewable energy development and utilization
Formula.However, the intrinsic intermittence of the renewable energy such as wind, light, fluctuation feature keep its grid-connected consumption difficult, leads to abandonment, abandons
Optical phenomenon is serious.In addition, network load peak-valley difference also has gradually widened trend with the growth of electricity needs.Extensive energy storage
As the key technology that support safe and stable operation of power system, realization peak load shifting, promotion renewable energy efficiently dissolve, obtain
To the highest attention of electricity power industry.Wherein, compressed-air energy-storage system long service life, memory capacity is big and manage bar over the ground
Part requires relatively low, cost and water-storage that can compare, and is a kind of extensive physics energy storage mode with development potential, has
It hopes to become and solves abandonment/abandoning light/abandoning water problems, realizes the extensive Time-spatial diversion of energy and improve the optimal selection of energy resource structure.
As multinomial extra-high voltage direct-current transmission engineering puts into operation in succession, Chinese extra-high voltage alternating current-direct current serial-parallel power grid just advise by tool
Mould.The large scales direct current such as the non-aqueous renewable energy pooling zone such as northwest and East China, Pearl River Delta is occurred by electric area concentration, so that electric
Web frame and characteristic vary widely.The problem of some areas dynamic passive compensation ability decline, voltage support scarce capacity
It is increasingly prominent, power network safety operation is caused to seriously threaten, objectively requires high-capacity direct current transmission of electricity that must match big rule
Mould dynamic reactive compares SVC (static var compensator, Static Var Compensator) and STATCOM (static
Synchronous compensator, static synchronous compensator) and synchronous capacitor be used equally for matching extensive dynamic nothing
Function.Compared to other reactive power compensators, synchronous capacitor has more superior performance, especially its short-time overload capacity pair
System voltage under fault condition has very strong supporting role.Since maintenance work amoun is big and electric energy loss is high, synchronous capacitor
Annual operating cost it is higher.
In addition, generator capacity is smaller in traditional compressed air energy storage power generating system, cannot be simultaneously emitted by largely has
Function and idle, the ability for providing reactive power support to power grid are weaker.
Summary of the invention
In view of the drawbacks of the prior art and Improvement requirement, the present invention provides a kind of compressed air energy storage power generating system and its
Phase modulation control method provides the ability of reactive power support to power grid it is intended that improving compressed air energy storage power generating system, and drops
Low operation of power networks cost.
To achieve the above object, according to the invention in a first aspect, provide a kind of compressed air energy storage power generating system, wrap
It includes: compression air energy-storing apparatus, generator, full control excitation unit and control circuit；
The generator terminal of generator is connected with power grid, and compression air energy-storing apparatus is connected with the rotor of generator, complete to control excitation dress
It sets and is connected with the excitation winding of generator, full excitation unit of controlling also is connected with the generator terminal of generator, control circuit and full control excitation
Each full-controlled device of device is respectively connected with, and control circuit is also connected in the generator terminal of compression air energy-storing apparatus and generator；
Control circuit is used to be obtained according to command signal and feedback signal for controlling full-controlled device in full control excitation unit
The switching signal cut-off and the control signal for controlling compression air energy-storing apparatus；Compression air energy-storing apparatus is used for basis
Control signal adjusts the revolving speed of its turbine in generator operation to realize between its internal compressed air energy storage and rotor mechanical energy
Mutual conversion, and disconnected and the connection of rotor in generator operation as synchronous condenser；Full control excitation unit be used for according to switching signal directly to
Power grid absorbs or injection reactive power, and the exciting current of regulator generator is to be absorbed or be injected to power grid indirectly by generator
Reactive power provides the ability of reactive power support to power grid to improve system.
Compressed air energy storage power generating system provided by the present invention, due to using the full control excitation dress based on full-controlled device
It sets, possesses more dampings compared to traditional compressed air energy storage power generating system, when which thereby enhancing system generator operation
Stability.
Compressed air energy storage power generating system provided by the present invention can be absorbed or be injected idle to power grid via two channels
Power；Wherein, channel one be the full control excitation unit based on full-controlled device directly by the channel that is connect with generator generator terminal to
Power grid absorbs or injection reactive power, and channel two is crossed by the exciting current of regulator generator for full control excitation unit and encourages or owe
It encourages, reactive power is absorbed or injected from generator to power grid；Due to full-controlled device fast response time, via channel one can quickly to
Power grid absorbs or injection reactive power, provides reactive power support to power grid rapidly；It can be injected to power grid via channel two a large amount of and steady
Fixed reactive power.Since compressed air energy storage power generating system provided by the present invention is there are two reactive power channels, and two
A channel Collaboration can be improved and provide the ability of reactive power support to power grid.And due to compressed air provided by the present invention
Energy-storing and power-generating system can provide reactive power support and active support to power grid simultaneously, can reduce the use of synchronous capacitor in power grid,
To effectively reduce the operating cost of power grid.
Further, control excitation unit includes: bridge-type rectified three-phase circuit parallel with one another, electric capacity of voltage regulation and half entirely
Bridge type exciting current control circuit；
Each phase bridge arm of rectified three-phase circuit includes two voltage-source type full-controlled devices, the three-phase bridge of rectified three-phase circuit
Arm midpoint is connected with the generator terminal of generator respectively；Three phase rectifier electric current is used to control its internal full-controlled device according to switching signal
It cut-offs, to directly absorb or inject reactive power to power grid；
Electric capacity of voltage regulation exports idle and copped wave to net side for inversion and obtains excitation electricity for guaranteeing DC-side Voltage Stabilization
Stream provides stable voltage source；
Exciting current control circuit includes two bridge arms, and each bridge arm includes a voltage-source type full-controlled device and one
Two bridge arm midpoints of diode, exciting current control circuit are connected with the excitation winding both ends of generator respectively；Exciting current
Control circuit is used to control cut-offfing for its internal full-controlled device according to switching signal, to control the exciting current of generator, thus
Reactive power is absorbed or injected indirectly to power grid by generator.
Further, each phase bridge arm of rectified three-phase circuit includes the first IGBT and the 2nd IGBT, the first IGBT's
Emitter is connected with the collector of the 2nd IGBT, first end of the collector of the first IGBT as bridge arm, the transmitting of the 2nd IGBT
Second end of the pole as bridge arm；The connected anode as rectified three-phase circuit of the first end of each phase bridge arm, the second of each phase bridge arm
The connected cathode as rectified three-phase circuit in end；
Exciting current control circuit includes the first bridge arm and the second bridge arm, and the first bridge arm includes the 3rd IGBT and diode
VD1, the emitter and diode VD of the 3rd IGBT1Cathode be connected, the collector of the 3rd IGBT as the first bridge arm first
End, diode VD1Second end of the anode as the first bridge arm；Second bridge arm includes the 4th IGBT and diode VD2, the 4th
The collector and diode VD of IGBT2Anode be connected, diode VD2First end of the cathode as the second bridge arm, the 4th IGBT
Second end of the emitter as the second bridge arm；The first end of first bridge arm and the second bridge arm is connected as exciting current control electricity
The connected cathode as exciting current control circuit of the second end of the anode on road, the first bridge arm and the second bridge arm；
One extremely connected, three-phase of the anode of rectified three-phase circuit, the anode of exciting current control circuit and electric capacity of voltage regulation
The cathode of rectification circuit, the cathode of exciting current control circuit and the another of electric capacity of voltage regulation are extremely connected；
The gate pole of each IGBT is connected with control circuit in full control excitation unit.
Further, control circuit includes: direct idle control module, indirectly idle control module and energy storage control
Module；
The direct input terminal of idle control module is connected with the generator terminal of generator, the output end of direct idle control module and
Each full-controlled device of rectified three-phase circuit is connected, and direct idle control module is used for basis from rectified three-phase circuit directly to power grid
The direct reactive power value of feedback and direct reactive power command value of absorption or injection obtain first switch signal, for controlling three
Full-controlled device is cut-off in commutating phase circuit, so that rectified three-phase circuit is directly absorbed to power grid or the reactive power injected etc.
In direct reactive power command value；
The indirect input terminal of idle control module is connected with the generator terminal of generator, the output end of indirect idle control module and
Each full-controlled device in exciting current control circuit is connected, and indirect idle control module is used to absorb according to from generator to power grid
Or the indirect reactive power value of feedback and indirect reactive power command value acquisition second switch signal of injection, for controlling excitation electricity
Full-controlled device is cut-off in flow control circuit, with the exciting current of regulator generator so that generator absorbed to power grid or
The reactive power of injection is equal to indirect reactive power command value；
The input terminal of energy storage control module is connected with the generator terminal of generator, the output end and compressed air of energy storage control module
Energy storage device is connected, and energy storage control module in generator operation according to active power feedback value and active power command value for obtaining
First control signal is taken, for adjusting the turbine speed of compression air energy-storing apparatus, so that generator has to what power grid exported
Function power is equal to active power command value；Energy storage control module is also used to obtain second control signal in generator operation as synchronous condenser, is used for
So that compression air energy-storing apparatus disconnects the connection with rotor；
Wherein, direct reactive power command value and indirect reactive power command value are by reactive power command value according to preset
Reactive power support ratio cut partition and obtain.
Second aspect according to the invention additionally provides a kind of based on the storage of compressed air provided by first aspect present invention
The phase modulation control method of energy electricity generation system, comprising:
According to preset reactive power support ratio, reactive power command value is divided into direct reactive power command value and indirectly
Reactive power command value；
It is obtained from the generator terminal of generator anti-from controlling the direct reactive power that excitation unit is directly absorbed or injected to power grid entirely
Feedback value, and first switch signal is obtained according to direct reactive power command value and direct reactive power value of feedback, it is complete for controlling
Full-controlled device is cut-off in control excitation unit, so that control excitation unit is directly absorbed to power grid or the reactive power injected etc. entirely
In direct reactive power command value；
It obtains from the generator terminal of generator from generator to indirect reactive power value of feedback power grid absorption or injected, and according to
Indirect inactivity instruction value and indirect reactive power value of feedback obtain second switch signal, complete in full control excitation unit for controlling
Control device is cut-off, with the exciting current of regulator generator, so that the reactive power that generator is absorbed or injected to power grid
Equal to indirect reactive power command value.
Further, phase modulation control method provided by second aspect of the present invention further include:
The active power feedback value for absorbing or injecting from generator to power grid is obtained from the generator terminal of generator；
Judge system mode, if generator operation state, is then obtained according to active power feedback value and active power command value
First control signal is obtained, for adjusting the turbine speed of compression air energy-storing apparatus, so that generator is absorbed or infused to power grid
The active power entered is equal to active power command value；If generator operation as synchronous condenser state, then second control signal is obtained, is used for so that pressure
Contracting air energy storage device disconnects the connection with rotor.
In general, contemplated above technical scheme through the invention, can obtain it is following the utility model has the advantages that
(1) compressed air energy storage power generating system provided by the present invention, since there are two reactive power channels, wherein one
A channel can be rapidly to power grid offer reactive power support, the reactive power support that another channel can be bigger, more stable to power grid offer, and two
A channel Collaboration can effectively improve and provide the ability of reactive power support to power grid.
(2) compressed air energy storage power generating system provided by the present invention can provide reactive power support and active to power grid simultaneously
Support, can reduce the use of synchronous capacitor in power grid, to effectively reduce the operating cost of power grid.
(3) compressed air energy storage power generating system provided by the present invention is encouraged due to using the full control based on full-controlled device
Magnetic device possesses more dampings compared to traditional compressed air energy storage power generating system, which thereby enhances system generator operation
When stability.
Detailed description of the invention
Fig. 1 is compressed air energy storage power generating system schematic diagram provided in an embodiment of the present invention；
Fig. 2 is full control excitation unit schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
It is according to the invention in a first aspect, providing a kind of compressed air energy storage power generating system, as shown in Figure 1, comprising: pressure
Contracting air energy storage device, generator, full control excitation unit and control circuit；
The generator terminal of generator is connected with power grid, and compression air energy-storing apparatus is connected with the rotor of generator, complete to control excitation dress
It sets and is connected with the excitation winding of generator, full excitation unit of controlling also is connected with the generator terminal of generator, control circuit and full control excitation
Each full-controlled device of device is respectively connected with, and control circuit is also connected in the generator terminal of compression air energy-storing apparatus and generator；
Control circuit is used to be obtained according to command signal and feedback signal for controlling full-controlled device in full control excitation unit
The switching signal cut-off and the control signal for controlling compression air energy-storing apparatus；Compression air energy-storing apparatus is used for basis
Control signal adjusts the revolving speed of its turbine in generator operation to realize between its internal compressed air energy storage and rotor mechanical energy
Mutual conversion, and disconnected and the connection of rotor in generator operation as synchronous condenser；Full control excitation unit be used for according to switching signal directly to
Power grid absorbs or injection reactive power, and the exciting current of regulator generator is to be absorbed or be injected to power grid indirectly by generator
Reactive power provides the ability of reactive power support to power grid to improve system；
In the present embodiment, as shown in Fig. 2, full control excitation unit include: bridge-type rectified three-phase circuit parallel with one another,
Electric capacity of voltage regulation and semi-bridge type exciting current control circuit；
Each phase bridge arm of rectified three-phase circuit includes two voltage-source type full-controlled devices, the three-phase bridge of rectified three-phase circuit
Arm midpoint is connected with the generator terminal of generator respectively；Three phase rectifier electric current is used to control its internal full-controlled device according to switching signal
It cut-offs, to directly absorb or inject reactive power to power grid；
Electric capacity of voltage regulation exports idle and copped wave to net side for inversion and obtains excitation electricity for guaranteeing DC-side Voltage Stabilization
Stream provides stable voltage source；
Exciting current control circuit includes two bridge arms, and each bridge arm includes a voltage-source type full-controlled device and one
Two bridge arm midpoints of diode, exciting current control circuit are connected with the excitation winding both ends of generator respectively；Exciting current
Control circuit is used to control cut-offfing for its internal full-controlled device according to switching signal, to control the exciting current of generator, thus
Reactive power is absorbed or injected indirectly to power grid by generator；
Specifically, each phase bridge arm of rectified three-phase circuit includes the first IGBT and the 2nd IGBT, the transmitting of the first IGBT
Pole is connected with the collector of the 2nd IGBT, first end of the collector of the first IGBT as bridge arm, and the emitter of the 2nd IGBT is made
For the second end of bridge arm；The connected anode as rectified three-phase circuit of the first end of each phase bridge arm, the second end phase of each phase bridge arm
Continuous cropping is the cathode of rectified three-phase circuit；
Exciting current control circuit includes the first bridge arm and the second bridge arm, and the first bridge arm includes the 3rd IGBT and diode
VD1, the emitter and diode VD of the 3rd IGBT1Cathode be connected, the collector of the 3rd IGBT as the first bridge arm first
End, diode VD1Second end of the anode as the first bridge arm；Second bridge arm includes the 4th IGBT and diode VD2, the 4th
The collector and diode VD of IGBT2Anode be connected, diode VD2First end of the cathode as the second bridge arm, the 4th IGBT
Second end of the emitter as the second bridge arm；The first end of first bridge arm and the second bridge arm is connected as exciting current control electricity
The connected cathode as exciting current control circuit of the second end of the anode on road, the first bridge arm and the second bridge arm；
One extremely connected, three-phase of the anode of rectified three-phase circuit, the anode of exciting current control circuit and electric capacity of voltage regulation
The cathode of rectification circuit, the cathode of exciting current control circuit and the another of electric capacity of voltage regulation are extremely connected；
The gate pole of each IGBT is connected with control circuit in full control excitation unit；
The advantages such as full-controlled device IGBT has loss low, and driving current is low are realized full control excitation unit using IGBT, can be had
Effect reduces system loss；
In the present embodiment, control circuit specifically includes: direct idle control module, indirectly idle control module and storage
Energy control module；
The direct input terminal of idle control module is connected with the generator terminal of generator, the output end of direct idle control module and
Each full-controlled device of rectified three-phase circuit is connected, and direct idle control module is used for basis from rectified three-phase circuit directly to power grid
The direct reactive power value of feedback and direct reactive power command value of absorption or injection obtain first switch signal, for controlling three
Full-controlled device is cut-off in commutating phase circuit, so that rectified three-phase circuit is directly absorbed to power grid or the reactive power injected etc.
In direct reactive power command value；
The indirect input terminal of idle control module is connected with the generator terminal of generator, the output end of indirect idle control module and
Each full-controlled device in exciting current control circuit is connected, and indirect idle control module is used to absorb according to from generator to power grid
Or the indirect reactive power value of feedback and indirect reactive power command value acquisition second switch signal of injection, for controlling excitation electricity
Full-controlled device is cut-off in flow control circuit, with the exciting current of regulator generator so that generator absorbed to power grid or
The reactive power of injection is equal to indirect reactive power command value；
The input terminal of energy storage control module is connected with the generator terminal of generator, the output end and compressed air of energy storage control module
Energy storage device is connected, and energy storage control module in generator operation according to active power feedback value and active power command value for obtaining
First control signal is taken, for adjusting the turbine speed of compression air energy-storing apparatus, so that generator has to what power grid exported
Function power is equal to active power command value；Energy storage control module is also used to obtain second control signal in generator operation as synchronous condenser, is used for
So that compression air energy-storing apparatus disconnects the connection with rotor；
Wherein, direct reactive power command value and indirect reactive power command value are by reactive power command value according to preset
Reactive power support ratio cut partition and obtain；Reactive power support ratio cut partition is generally set according to specific electric network composition, final to divide gained
Direct reactive power command value be less than indirect reactive power command value；
In the present embodiment, each module is obtaining respective switch signal or control signal according to command signal and feedback signal
When, it is all made of the control strategy of dq Feedforward Decoupling two close cycles.
Compressed air energy storage power generating system provided by the present invention, due to using the full control excitation dress based on full-controlled device
It sets, possesses more dampings compared to traditional compressed air energy storage power generating system, when which thereby enhancing system generator operation
Stability.
Compressed air energy storage power generating system provided by the present invention can be absorbed or be injected idle to power grid via two channels
Power；Wherein, channel one be the full control excitation unit based on full-controlled device directly by the channel that is connect with generator generator terminal to
Power grid absorbs or injection reactive power, and channel two is crossed by the exciting current of regulator generator for full control excitation unit and encourages or owe
It encourages, reactive power is absorbed or injected from generator to power grid；Due to full-controlled device fast response time, via channel one can quickly to
Power grid absorbs or injection reactive power, provides reactive power support to power grid rapidly；It can be injected to power grid via channel two a large amount of and steady
Fixed reactive power.Since compressed air energy storage power generating system provided by the present invention is there are two reactive power channels, and two
A channel Collaboration can be improved and provide the ability of reactive power support to power grid.And due to compressed air provided by the present invention
Energy-storing and power-generating system can provide reactive power support and active support to power grid simultaneously, can reduce the use of synchronous capacitor in power grid,
To effectively reduce the operating cost of power grid.
The present invention also provides a kind of tune based on compressed air energy storage power generating system provided by first aspect present invention
Phase control method, comprising:
According to preset reactive power support ratio, reactive power command value is divided into direct reactive power command value and indirectly
Reactive power command value；
It is obtained from the generator terminal of generator anti-from controlling the direct reactive power that excitation unit is directly absorbed or injected to power grid entirely
Feedback value, and first switch signal is obtained according to direct reactive power command value and direct reactive power value of feedback, it is complete for controlling
Full-controlled device is cut-off in control excitation unit, so that control excitation unit is directly absorbed to power grid or the reactive power injected etc. entirely
In direct reactive power command value；
It obtains from the generator terminal of generator from generator to indirect reactive power value of feedback power grid absorption or injected, and according to
Indirect inactivity instruction value and indirect reactive power value of feedback obtain second switch signal, complete in full control excitation unit for controlling
Control device is cut-off, with the exciting current of regulator generator, so that the reactive power that generator is absorbed or injected to power grid
Equal to indirect reactive power command value；
Phase modulation control method provided by the present invention further include:
The active power feedback value for absorbing or injecting from generator to power grid is obtained from the generator terminal of generator；
Judge system mode, if generator operation state, is then obtained according to active power feedback value and active power command value
First control signal is obtained, for adjusting the turbine speed of compression air energy-storing apparatus, so that generator is absorbed or infused to power grid
The active power entered is equal to active power command value；If generator operation as synchronous condenser state, then second control signal is obtained, is used for so that pressure
Contracting air energy storage device disconnects the connection with rotor.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of compressed air energy storage power generating system characterized by comprising compression air energy-storing apparatus, generator, full control are encouraged
Magnetic device and control circuit；
The generator terminal of the generator is connected with power grid, and the compression air energy-storing apparatus is connected with the rotor of the generator, institute
It states full control excitation unit to be connected with the excitation winding of the generator, generator terminal of the full control excitation unit also with the generator
It is connected, the control circuit and each full-controlled device of the full control excitation unit are respectively connected with, and the control circuit is also in described
The generator terminal of compression air energy-storing apparatus and the generator is connected；
The control circuit is used to be obtained according to command signal and feedback signal and control entirely for controlling in the full control excitation unit
The switching signal that device is cut-off and the control signal for controlling the compression air energy-storing apparatus；The compressed-air energy storage
Device is used to adjust the revolving speed of its turbine in generator operation according to the control signal to realize its internal compressed air energy storage
Mutual conversion between the rotor mechanical energy, and disconnected and the connection of the rotor in generator operation as synchronous condenser；The full control is encouraged
Magnetic device is used to directly absorb to power grid according to the switching signal or inject reactive power, and adjusts the excitation of the generator
Electric current provides idle branch to power grid to absorb to power grid indirectly by the generator or inject reactive power, to improve system
The ability of support.
2. compressed air energy storage power generating system as described in claim 1, which is characterized in that the full control excitation unit includes:
Bridge-type rectified three-phase circuit, electric capacity of voltage regulation and semi-bridge type exciting current control circuit parallel with one another；
Each phase bridge arm of the rectified three-phase circuit includes two voltage-source type full-controlled devices, and the three of the rectified three-phase circuit
Phase bridge arm midpoint is connected with the generator terminal of the generator respectively；The three phase rectifier electric current is used to be controlled according to the switching signal
Its internal full-controlled device is cut-off, to directly absorb or inject reactive power to power grid；
The electric capacity of voltage regulation exports idle and copped wave to net side for inversion and obtains excitation electricity for guaranteeing DC-side Voltage Stabilization
Stream provides stable voltage source；
The exciting current control circuit includes two bridge arms, and each bridge arm includes a voltage-source type full-controlled device and one
Two bridge arm midpoints of diode, the exciting current control circuit are connected with the excitation winding both ends of the generator respectively；
The exciting current control circuit is used to control cut-offfing for its internal full-controlled device according to the switching signal, to control the hair
The exciting current of motor, to absorb or inject indirectly reactive power to power grid by the generator.
3. compressed air energy storage power generating system as claimed in claim 2, which is characterized in that each phase of the rectified three-phase circuit
Bridge arm includes the first IGBT and the 2nd IGBT, and the emitter of the first IGBT is connected with the collector of the 2nd IGBT,
First end of the collector of first IGBT as bridge arm, second end of the emitter of the 2nd IGBT as bridge arm；Respectively
The connected anode as the rectified three-phase circuit of the first end of phase bridge arm, the second end of each phase bridge arm, which is connected, is used as the three-phase
The cathode of rectification circuit；
The exciting current control circuit includes the first bridge arm and the second bridge arm, and first bridge arm includes the 3rd IGBT and two poles
Pipe VD1, the emitter and the diode VD of the 3rd IGBT1Cathode be connected, the collector of the 3rd IGBT is as institute
State the first end of the first bridge arm, the diode VD1Second end of the anode as first bridge arm；The second bridge arm packet
Include the 4th IGBT and diode VD2, the collector and the diode VD of the 4th IGBT2Anode be connected, the diode
VD2First end of the cathode as second bridge arm, the emitter of the 4th IGBT as second bridge arm second
End；The anode that first bridge arm is connected with the first end of second bridge arm as the exciting current control circuit, it is described
The cathode that first bridge arm is connected with the second end of second bridge arm as the exciting current control circuit；
One pole phase of the positive and described electric capacity of voltage regulation of positive, the described exciting current control circuit of the rectified three-phase circuit
Even, another pole of the cathode of the rectified three-phase circuit, the cathode of the exciting current control circuit and the electric capacity of voltage regulation
It is connected；
The gate pole of each IGBT is connected with the control circuit in the full control excitation unit.
4. compressed air energy storage power generating system as claimed in claim 2, which is characterized in that the control circuit includes: direct
Idle control module, indirectly idle control module and energy storage control module；
The input terminal of the directly idle control module is connected with the generator terminal of the generator, the directly idle control module
Output end is connected with each full-controlled device of the rectified three-phase circuit, and the directly idle control module is used for according to by described three
Commutating phase circuit is directly absorbed to power grid or the direct reactive power value of feedback injected and direct reactive power command value obtain the
One switching signal, for controlling cut-offfing for full-controlled device in the rectified three-phase circuit, so that the rectified three-phase circuit is straight
It connects the reactive power for absorbing or injecting to power grid and is equal to the direct reactive power command value；
The input terminal of the idle control module indirectly is connected with the generator terminal of the generator, the idle control module indirectly
Output end is connected with each full-controlled device in the exciting current control circuit, it is described indirectly idle control module be used for according to by
The generator obtains second to power grid absorption or the indirect reactive power value of feedback injected and indirect reactive power command value and opens
OFF signal, for controlling cut-offfing for full-controlled device in the exciting current control circuit, to adjust the excitation electricity of the generator
Stream, so that the reactive power that the generator is absorbed or injected to power grid is equal to the indirect reactive power command value；
The input terminal of the energy storage control module is connected with the generator terminal of the generator, the output end of the energy storage control module with
The compression air energy-storing apparatus is connected, the energy storage control module be used in generator operation according to active power feedback value and
Active power command value obtains first control signal, for adjusting the turbine speed of the compression air energy-storing apparatus, so that
The active power that the generator is exported to power grid is equal to the active power command value；The energy storage control module is also used to
Second control signal is obtained when generator operation as synchronous condenser, for so that the compression air energy-storing apparatus disconnects the connection with the rotor；
Wherein, the direct reactive power command value and the indirect reactive power command value are by reactive power command value according to pre-
If reactive power support ratio cut partition and obtain.
5. a kind of phase modulation control method based on the described in any item compressed air energy storage power generating systems of claim 1-4, special
Sign is, comprising:
According to preset reactive power support ratio, reactive power command value is divided into direct reactive power command value and indirectly idle
Power command value；
The direct idle function for directly being absorbed or being injected to power grid from the full control excitation unit is obtained from the generator terminal of the generator
Rate value of feedback, and first switch letter is obtained according to the direct reactive power command value and the direct reactive power value of feedback
Number, it is cut-off for controlling full-controlled device in the full control excitation unit, so that the full control excitation unit is directly to power grid
It absorbs or the reactive power of injection is equal to the direct reactive power command value；
The indirect reactive power value of feedback for absorbing or injecting from the generator to power grid is obtained from the generator terminal of the generator, and
Second switch signal is obtained according to the indirect inactivity instruction value and the indirect reactive power value of feedback, it is described for controlling
Full-controlled device is cut-off in full control excitation unit, to adjust the exciting current of the generator so that the generator to
Power grid absorbs or the reactive power of injection is equal to the indirect reactive power command value.
6. phase modulation control method as claimed in claim 5, which is characterized in that further include:
The active power feedback value for absorbing or injecting from the generator to power grid is obtained from the generator terminal of the generator；
Judge system mode, if generator operation state, then basis has the function Feedback of Power value and active power instruction
Value obtain first control signal, for adjusting the turbine speed of the compression air energy-storing apparatus so that the generator to
Power grid absorbs or the active power of injection is equal to the active power command value；If generator operation as synchronous condenser state, then the second control is obtained
Signal processed, for so that the compression air energy-storing apparatus disconnects the connection with the rotor.
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| CN114526134A (en) * | 2022-01-28 | 2022-05-24 | 中国能源建设集团江苏省电力设计院有限公司 | Phase modulator system based on compressed air energy storage power generation system and operation method thereof |
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| CN110224433A (en) * | 2019-06-14 | 2019-09-10 | 贵州电网有限责任公司 | A kind of expansion power generation phase modifier system and method |
| CN113783201A (en) * | 2021-08-23 | 2021-12-10 | 国网浙江省电力有限公司电力科学研究院 | Power generation system based on three-channel full-control excitation device and control method thereof |
| CN114526134A (en) * | 2022-01-28 | 2022-05-24 | 中国能源建设集团江苏省电力设计院有限公司 | Phase modulator system based on compressed air energy storage power generation system and operation method thereof |
| CN114526134B (en) * | 2022-01-28 | 2024-04-30 | 中国能源建设集团江苏省电力设计院有限公司 | Camera system based on compressed air energy storage power generation system and operation method thereof |
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