CN208441895U - A kind of compressed-air energy storage electric power station system for primary frequency modulation - Google Patents
A kind of compressed-air energy storage electric power station system for primary frequency modulation Download PDFInfo
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- CN208441895U CN208441895U CN201820712607.6U CN201820712607U CN208441895U CN 208441895 U CN208441895 U CN 208441895U CN 201820712607 U CN201820712607 U CN 201820712607U CN 208441895 U CN208441895 U CN 208441895U
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Abstract
The utility model discloses a kind of compressed-air energy storage electric power station system for primary frequency modulation, by increasing overload valve in compressed-air energy storage electric power station system, in mains frequency bust and overfrequency dead zone, compressed air in compressed air reservoir is led to the entrance of next stage expanding machine, reach raising junior's expander inlet pressure in short-term, the purpose for improving expander system power output in short-term, restores mains frequency as early as possible to rated frequency, to maintain stabilization of power grids safe operation to provide support.
Description
Technical field
The utility model relates to compressed-air energy storage field more particularly to the compressed-air energy storage power station systems of primary frequency modulation
System.
Background technique
A kind of relatively advanced energy storage mode, is mainly characterized by low in electricity consumption in the current energy storage technology of compressed-air energy storage
Consume energy-storage capacity when paddy, when peak of power consumption is done work by expanding machine drives electrical power generators, has that energy storage scale is big, deposits
Store up the advantages that period is long, environmental pollution is small, it is considered to be one of most promising extensive power energy storage technology.
Compressed-air energy storage power station is in peak times of power consumption in power generating stage, power grid, to provide enough electricity to power grid
Can, while to improve the electricity-electrotransformation efficiency in compressed-air energy storage power station, inlet valve meeting standard-sized sheet in compressed-air energy storage power station subtracts
Few restriction loss, therefore compressed-air energy storage power station can generally maintain the peak load under current compression air pressure to run, this
The kind method of operation is unable to increase the requirement of load when the movement of responsive electricity grid frequency bust primary frequency modulation, and compressed-air energy storage power station is not
Can effective supporting role be provided for power grid under such conditions.Agree to when being operated normally such as power grid with compressed-air energy storage power station
The a certain unexpected removal of load of power supply point, mains frequency will reduce and cannot restore in time in region, and certain peace is caused to power grid
Full hidden danger.
Utility model content
Technical problem to be solved by the utility model is: the utility model is empty in certain compression for compressed-air energy storage power station
When peak load under atmospheric pressure is run, load increases when being unable to the movement of responsive electricity grid frequency bust primary frequency modulation or load is reduced
Requirement, the problem of effective supporting role cannot being provided under such conditions for power grid.
The technical solution of the utility model is:
A kind of compressed-air energy storage electric power station system for primary frequency modulation, including heat exchanger and expanding machine, between expanding machine
It is driven axis connection, generator and from left to right first expanding machine are driven axis connection, and the cold side outlet port of heat exchanger connects cold-storage tank, accumulation of heat
Tank connects the hot side entrance of heat exchanger, and the hot side outlet of heat exchanger connects expander inlet, in addition to first heat exchanger from right to left its
The cold side input port of its heat exchanger connects expander outlet, and it further includes overload valve that compressed air reservoir, which connects shut-off valve, described
Overload valve is connect with the shut-off valve, and the overload valve is connect with the cold side input port of second heat exchanger from right to left, regulating valve
It is connect with the shut-off valve, the regulating valve connects the cold side input port of first heat exchanger from right to left.
Transmission axis connection between the expanding machine is coaxially connected or non-coaxial connection, generator and from left to right first it is swollen
The transmission axis connection of swollen machine is coaxially connected or non-coaxial connection；
The quantity of the expanding machine is more than or equal to two, and the quantity of the heat exchanger is equal to the quantity of the expanding machine；
The overload valve be manually, electrically, pneumatically or hydraulically manipulation and control mode；
The overload valve is to adjust valve-type, can run and keep in any opening degree；
The control method of compressed-air energy storage electric power station system for primary frequency modulation, including following procedure:
Normal operating phase: mains frequency is stablized, the stable operation under power frequency mode of compressed-air energy storage power station, shutdown
Valve, regulating valve standard-sized sheet, overload valve close entirely, and compressed-air energy storage power station band full load is run, and such mode is compressed air storage
It can power station unit day-to-day operation mode；
The primary frequency modulation load up operation phase: as mains frequency fg< 50-fdWhen, fdFor the setting of compressed-air energy storage power station
Dead zone frequency, shut-off valve, regulating valve standard-sized sheet, overload valve are gradually opened at this time, mains frequency fgIt is lower, overload valve opening
lgIt is bigger, overload valve opening lgWith mains frequency fgRelationship it is as follows:
After mains frequency restores normal, i.e. 50-fd≤fg≤50+fdWhen, overload valve gradually turns down at this time, until complete
It closes, i.e. lg=0；
The primary frequency modulation effect decline load operation stage: as mains frequency fg> 50+fdWhen, shut-off valve standard-sized sheet, excessively negative at this time
Lotus valve closes entirely, i.e. lg=0, regulating valve progressively closes off, mains frequency fgIt is higher, control valve opening ltIt is smaller, mains frequency fgWith tune
Save the aperture l of valvetRelationship is as follows:
After mains frequency restores normal, i.e. 50-fd≤fg≤50+fdWhen, regulating valve is gradually opened greatly, until standard-sized sheet, i.e. lt
=100.
The beneficial effects of the utility model are: by the implementation of the utility model, in primary frequency regulation of power network movement, compression
Air energy-accumulating power station can timely respond to the requirement of the increase of primary frequency regulation of power network load or load reduction, so that power grid is more pacified
Full stable operation.By the implementation of the utility model, realize that responsive electricity grid is once adjusted in the operational process of compressed-air energy storage power station
The requirement of the increasing and decreasing load of frequency, so that power grid more safe and stable operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of utility model device；
Fig. 2 is the structural schematic diagram two of utility model device；
In figure: 1, shut-off valve, 2, regulating valve, 3, overload valve.
Specific embodiment
With reference to the accompanying drawing and utility model is described further in specific embodiment:
Embodiment 1
With reference to Fig. 1, a kind of compressed-air energy storage electric power station system for primary frequency modulation of the utility model, including heat exchanger and
Expanding machine, is driven axis connection between expanding machine, generator and first expanding machine is driven axis connection from left to right, and the cold side of heat exchanger goes out
Mouth connection cold-storage tank, heat-accumulator tank connect the hot side entrance of heat exchanger, and the hot side outlet of heat exchanger connects expander inlet, except from right to left
The cold side input port of other heat exchangers connects expander outlet outside first heat exchanger, and compressed air reservoir connects shut-off valve 1, also
Including overload valve 3, the overload valve 3 is connect with the shut-off valve 1, the overload valve 3 and second heat exchanger from right to left
Cold side input port connection, regulating valve 2 connect with the shut-off valve 1, and the regulating valve 2 connects the cold side of first heat exchanger from right to left
Entrance.
Transmission axis connection between the expanding machine is coaxially connected or non-coaxial connection, generator and from left to right first it is swollen
The transmission axis connection of swollen machine is coaxially connected or non-coaxial connection；
The quantity of the expanding machine is equal to two, and the quantity of the heat exchanger is equal to the quantity of the expanding machine；
The overload valve 3 be manually, electrically, pneumatically or hydraulically manipulation and control mode；
The overload valve 3 is to adjust valve-type, can run and keep in any opening degree；
The control method of compressed-air energy storage electric power station system for primary frequency modulation, including following procedure:
Normal operating phase: mains frequency is stablized, the stable operation under power frequency mode of compressed-air energy storage power station, shut-off valve
1,2 standard-sized sheet of regulating valve, overload valve 3 close entirely, and compressed-air energy storage power station band full load is run, and such mode is compressed air storage
It can power station unit day-to-day operation mode；
The primary frequency modulation load up operation phase: as mains frequency fg< 50-fdWhen, fdFor the setting of compressed-air energy storage power station
Dead zone frequency, shut-off valve 1,2 standard-sized sheet of regulating valve, overload valve 3 are gradually opened at this time, mains frequency fgIt is lower, overload valve
Aperture lgIt is bigger, 3 aperture l of overload valvegWith mains frequency fgRelationship it is as follows:
After mains frequency restores normal, i.e. 50-fd≤fg≤50+fdWhen, overload valve 3 gradually turns down at this time, until complete
It closes, i.e. lg=0；
The primary frequency modulation effect decline load operation stage: as mains frequency fg> 50+fdWhen, 1 standard-sized sheet of shut-off valve at this time, mistake
Load valve 3 closes entirely, i.e. lg=0, regulating valve 2 progressively closes off, mains frequency fgIt is higher, 2 aperture l of regulating valvetIt is smaller, mains frequency
fgWith the aperture l of regulating valve 2tRelationship is as follows:
After mains frequency restores normal, i.e. 50-fd≤fg≤50+fdWhen, regulating valve 2 is gradually opened greatly, until standard-sized sheet, i.e.,
lt=100.
Embodiment 2
With reference to Fig. 2, a kind of compressed-air energy storage electric power station system for primary frequency modulation of the utility model, including heat exchanger and
Expanding machine, is driven axis connection between expanding machine, generator and first expanding machine is driven axis connection from left to right, and the cold side of heat exchanger goes out
Mouth connection cold-storage tank, heat-accumulator tank connect the hot side entrance of heat exchanger, and the hot side outlet of heat exchanger connects expander inlet, except from right to left
The cold side input port of other heat exchangers connects expander outlet outside first heat exchanger, and compressed air reservoir connects shut-off valve 1, also
Including overload valve 3, the overload valve 3 is connect with the shut-off valve 1, the overload valve 3 and second heat exchanger from right to left
Cold side input port connection, regulating valve 2 connect with the shut-off valve 1, and the regulating valve 2 connects the cold side of first heat exchanger from right to left
Entrance.
Transmission axis connection between the expanding machine is coaxially connected or non-coaxial connection, generator and from left to right first it is swollen
The transmission axis connection of swollen machine is coaxially connected or non-coaxial connection；
The quantity of the expanding machine is equal to three, and the quantity of the heat exchanger is equal to the quantity of the expanding machine；
The overload valve 3 be manually, electrically, pneumatically or hydraulically manipulation and control mode；
The overload valve 3 is to adjust valve-type, can run and keep in any opening degree；
The control method of compressed-air energy storage electric power station system for primary frequency modulation, including following procedure:
Normal operating phase: mains frequency is stablized, the stable operation under power frequency mode of compressed-air energy storage power station, shut-off valve
1,2 standard-sized sheet of regulating valve, overload valve 3 close entirely, and compressed-air energy storage power station band full load is run, and such mode is compressed air storage
It can power station unit day-to-day operation mode；
The primary frequency modulation load up operation phase: as mains frequency fg< 50-fdWhen, fdFor the setting of compressed-air energy storage power station
Dead zone frequency, shut-off valve 1,2 standard-sized sheet of regulating valve, overload valve 3 are gradually opened at this time, mains frequency fgIt is lower, overload valve
Aperture lgIt is bigger, 3 aperture l of overload valvegWith mains frequency fgRelationship it is as follows:
After mains frequency restores normal, i.e. 50-fd≤fg≤50+fdWhen, overload valve 3 gradually turns down at this time, until complete
It closes, i.e. lg=0；
The primary frequency modulation effect decline load operation stage: as mains frequency fg> 50+fdWhen, 1 standard-sized sheet of shut-off valve at this time, mistake
Load valve 3 closes entirely, i.e. lg=0, regulating valve 2 progressively closes off, mains frequency fgIt is higher, 2 aperture l of regulating valvetIt is smaller, mains frequency
fgWith the aperture l of regulating valve 2tRelationship is as follows:
After mains frequency restores normal, i.e. 50-fd≤fg≤50+fdWhen, regulating valve 2 is gradually opened greatly, until standard-sized sheet, i.e.,
lt=100.
Claims (5)
1. a kind of compressed-air energy storage electric power station system for primary frequency modulation, including heat exchanger and expanding machine, passed between expanding machine
Moving axis connection, generator and from left to right first expanding machine are driven axis connection, and the cold side outlet port of heat exchanger connects cold-storage tank, heat-accumulator tank
The hot side entrance of heat exchanger is connected, the hot side outlet of heat exchanger connects expander inlet, other in addition to first heat exchanger from right to left
The cold side input port of heat exchanger connects expander outlet, and compressed air reservoir connects shut-off valve (1), it is characterised in that: further includes
Overload valve (3), the overload valve (3) connect with the shut-off valve (1), and the overload valve (3) is changed with second from right to left
The cold side input port of hot device connects, and regulating valve (2) is connect with the shut-off valve (1), and regulating valve (2) connection is changed for first from right to left
The cold side input port of hot device.
2. a kind of compressed-air energy storage electric power station system for primary frequency modulation according to claim 1, it is characterised in that: institute
Stating the transmission axis connection between expanding machine is coaxially connected or non-coaxial connection, generator and the from left to right transmission of first expanding machine
Axis connection is coaxially connected or non-coaxial connection.
3. a kind of compressed-air energy storage electric power station system for primary frequency modulation according to claim 1, it is characterised in that: institute
The quantity for stating expanding machine is more than or equal to two, and the quantity of the heat exchanger is equal to the quantity of the expanding machine.
4. a kind of compressed-air energy storage electric power station system for primary frequency modulation according to claim 1, it is characterised in that: institute
State overload valve (3) be manually, electrically, pneumatically or hydraulically manipulation and control mode.
5. a kind of compressed-air energy storage electric power station system for primary frequency modulation according to claim 1, it is characterised in that: institute
Overload valve (3) are stated to adjust valve-type, can run and keep in any opening degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712607.6U CN208441895U (en) | 2018-05-14 | 2018-05-14 | A kind of compressed-air energy storage electric power station system for primary frequency modulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820712607.6U CN208441895U (en) | 2018-05-14 | 2018-05-14 | A kind of compressed-air energy storage electric power station system for primary frequency modulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506056A (en) * | 2018-05-14 | 2018-09-07 | 贵州电网有限责任公司 | A kind of compressed-air energy storage electric power station system and its control method for primary frequency modulation |
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2018
- 2018-05-14 CN CN201820712607.6U patent/CN208441895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506056A (en) * | 2018-05-14 | 2018-09-07 | 贵州电网有限责任公司 | A kind of compressed-air energy storage electric power station system and its control method for primary frequency modulation |
| CN108506056B (en) * | 2018-05-14 | 2023-12-01 | 贵州电网有限责任公司 | Compressed air energy storage power station system for primary frequency modulation and control method thereof |
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