CN112736936A - Thermal power generating unit frequency modulation auxiliary system - Google Patents
Thermal power generating unit frequency modulation auxiliary system Download PDFInfo
- Publication number
- CN112736936A CN112736936A CN202011638465.1A CN202011638465A CN112736936A CN 112736936 A CN112736936 A CN 112736936A CN 202011638465 A CN202011638465 A CN 202011638465A CN 112736936 A CN112736936 A CN 112736936A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- storage device
- frequency modulation
- unit
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H02J3/241—The oscillation concerning frequency
-
- 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
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
Abstract
The invention discloses a thermal power generating unit frequency modulation auxiliary system which comprises a first energy storage device, a second energy storage device and an energy storage energy management device, wherein the first energy storage device, the second energy storage device and the energy storage energy management device are connected with a thermal power generating unit, the energy storage energy management device is used for collecting frequency modulation signals from a power plant remote terminal control unit, a power plant distributed control unit and a steam turbine digital electro-hydraulic regulation unit, calculating and determining the total power to be output by the first energy storage device and the second energy storage device and the total power to be output by the first energy storage device and the second energy storage device respectively after judging that the frequency modulation state of the thermal power generating unit is a primary frequency modulation state or a secondary frequency modulation state, generating and issuing power instructions to the first energy storage device and the second energy storage device for execution according to a preset rule1Is greater than the rated power P of the second energy storage device2The first energy storage deviceConstant capacitance E1Is smaller than the rated capacitance E of the second energy storage device2. The efficient frequency modulation performance is realized by configuring an energy storage device mainly based on power and capacity.
Description
Technical Field
The invention relates to the technical field of power station operation, in particular to a thermal power generating unit frequency modulation auxiliary system.
Background
With the continuous enhancement of the environmental protection consciousness and the continuous development of new energy technology in the whole society, new energy generating sets represented by wind power and photovoltaic are rapidly developed in China, and the scale of new energy grid-connected power generation is rapidly increased.
The conventional energy based on the traditional fossil energy is generally scheduled for power generation, transmission, distribution and utilization according to the power utilization requirement; the new energy power generation based on wind energy and solar energy depends on natural resource conditions, has volatility and intermittence, is difficult to adjust and control, and can bring remarkable influence on the adjustment of the frequency of a power grid and the safe and stable operation of the power grid in large-scale grid-connected operation. Meanwhile, the construction of the ultrahigh voltage power grid in China, particularly the rapid promotion of the ultrahigh voltage direct current transmission project, also increases the risk of the low-frequency accident of the regional power grid at the power receiving end.
Therefore, it is urgently needed to ensure that the thermal power generating units in the power grid have excellent-performance, stable and reliable primary frequency modulation and secondary frequency modulation (AGC frequency modulation) capabilities.
The essence of the primary frequency modulation and the secondary frequency modulation is that the active power output by the generator set is changed, so that the power generation load is equal to the power utilization load, and the frequency stability of the power grid is maintained. But the trigger signals are different. The trigger signal of the primary frequency modulation is the frequency of a grid-connected point of the generator set, and the trigger signal of the secondary frequency modulation is an AGC instruction issued by a power grid dispatching center. In the actual operation process, the situation that the primary frequency modulation is opposite to the secondary frequency modulation signal may occur, at this time, the generator set should preferentially respond to the primary frequency modulation according to a set rule, and then respond to the secondary frequency modulation after the frequency of the grid-connected point is recovered.
The primary frequency modulation and the secondary frequency modulation have different requirements on the capacity of the thermal power generating unit. The power change range required by the primary frequency modulation of the thermal power generating unit is large, but the evaluation and calculation time is short, and the frequency of full power output is not high. In contrast, the range of power variation of the chirp command is small, but the frequency of the command is high. In other words, primary frequency modulation requires a thermal power generating unit to have the capability of rapidly realizing large power change in a short time, and secondary frequency modulation requires the thermal power generating unit to have the capability of continuously changing small power.
At present, a thermal power generating unit is generally configured with an energy storage frequency modulation system for the purpose of improving secondary frequency modulation performance, at this time, the full-charge discharge time of the energy storage system is generally longer than 30 minutes, but the power does not exceed 3% of the rated power of the unit, so that the improvement of the primary frequency modulation performance of the unit is limited. The primary frequency modulation of the unit under the scheme mainly responds to the capacity of the unit.
At present, most of thermal power generating units in domestic active service realize primary frequency modulation of the units mainly by adjusting a main steam adjusting valve of a steam turbine. In this way, in order to ensure that the primary frequency modulation capacity of the unit meets the requirement of a power grid, the main steam regulating valve of the steam turbine needs to keep throttling at a certain depth during daily operation, so that the economical efficiency of the unit operation is greatly damaged, the coal consumption rate of the unit for power supply is increased, and the economic benefit of a power plant is reduced. Meanwhile, the method for adjusting power by means of quick opening and closing of the valve has limited response speed, and is easy to cause problems of valve abrasion and overlarge boiler pressure fluctuation, so that the service life of equipment is influenced.
At the present stage, a technical scheme of an energy storage frequency modulation system for the purpose of improving the primary frequency modulation performance of a thermal power generating unit is also provided. However, the primary frequency modulation has a large requirement on power, but the frequency of full power output is not large, so that the technical scheme has poor economy.
On the premise of ensuring the economical efficiency of the energy storage system, the single energy storage system is configured, so that the requirements of primary frequency modulation and secondary frequency modulation of the thermal power generating unit are difficult to meet simultaneously.
At the present stage, a technical scheme of a combined energy storage frequency modulation system for the thermal power generating unit is provided, but the design of the combined energy storage frequency modulation system is originally designed to improve the secondary frequency modulation performance of the thermal power generating unit, and a control system part lacks the acquisition of a unit frequency signal. Therefore, when the primary frequency modulation frequency signal collides with the secondary frequency modulation signal, the system can reduce the primary frequency modulation performance of the unit.
Disclosure of Invention
The invention aims to provide a thermal power generating unit frequency modulation auxiliary system, which is used for realizing the coordination control of the hybrid energy storage system for assisting the primary and secondary frequency modulation (AGC frequency modulation) of the thermal power generating unit on the premise of economic configuration of the hybrid energy storage system and simultaneously improving the primary and secondary frequency modulation performance of the thermal power generating unit.
In order to solve the above technical problem, an embodiment of the present invention provides a thermal power generating unit frequency modulation auxiliary system, which includes a first energy storage device, a second energy storage device, and an energy storage energy management device connected to a thermal power generating unit, the energy storage energy management device is used for collecting frequency modulation signals from a power plant remote terminal control unit, a power plant decentralized control unit and a steam turbine digital electro-hydraulic regulation unit, judging that the frequency modulation state of the thermal power generating unit is a primary frequency modulation state or a secondary frequency modulation state, after the total power which should be output by the first energy storage device and the second energy storage device and the total power which should be output by the first energy storage device and the second energy storage device respectively are calculated and determined, and generating and sending a power instruction to the first energy storage device and the second energy storage device for execution according to a preset rule, wherein the rated power P of the first energy storage device is obtained.1Is greater than the rated power P of the second energy storage device2Rated capacity E of said first energy storage means1Is smaller than the rated capacitance E of the second energy storage device2。
The energy storage transformation device is connected with the first energy storage device and the second energy storage device and used for transforming the electric energy output by the first energy storage device and the second energy storage device and outputting the electric energy to the high-voltage plant electric device of the thermal power plant.
The first energy storage device comprises at least one of a flywheel energy storage unit, a super capacitor energy storage unit and a power type lithium iron phosphate battery energy storage unit, the total rated power of the first energy storage device is 5% -10% of the rated power of the thermal power unit, and the rated discharge time of the first energy storage device is 30s-15 min.
The second energy storage device comprises at least one of a lithium iron phosphate battery energy storage unit, a ternary lithium battery energy storage unit, a lead-carbon battery energy storage unit and a redox flow battery energy storage unit, the total rated power of the second energy storage device is 1% -5% of the rated power of the thermal power unit, and the rated power of the second energy storage device is discharged for 30-90 min.
The first energy storage device comprises a first energy storage converter, a power type energy storage unit and a first energy storage unit management unit, and the second energy storage device comprises a second energy storage converter, an energy type energy storage unit and a second energy storage unit management unit.
And the energy management device collects and stores output power information from the first energy storage device and the second energy storage device and feeds the output power information back to the power plant remote terminal control unit.
The energy storage energy management device comprises an instruction acquisition unit, an instruction calculation and storage server and an instruction issuing unit.
The total rated power of the first energy storage device and the second energy storage device is 5% -10% of the rated power of the thermal power generating unit.
The device comprises a thermal power generating unit, a first energy storage device, a second energy storage device and a display device, wherein the display device is connected with the energy storage energy management device and used for displaying the frequency modulation state of the thermal power generating unit and the output power information and duration of the first energy storage device and the second energy storage device.
The energy storage device comprises a first energy storage device, a second energy storage device and an alarm unit, wherein the alarm unit is connected with the energy storage energy management device and used for giving an alarm after the output power information of the first energy storage device or the second energy storage device is compared with the power information corresponding to the regulation and control instruction and exceeds a threshold value.
Compared with the prior art, the thermal power generating unit frequency modulation auxiliary system provided by the embodiment of the invention has the following advantages:
the thermal power unit frequency modulation auxiliary system requires the thermal power unit to have the capacity of quickly realizing large power change in a short time according to primary frequency modulation, and requires the thermal power unit to have the requirement of continuously changing small power of the thermal power unit according to secondary frequency modulation1Is smaller than the rated capacitance E of the second energy storage device2Therefore, the whole frequency modulation process has more economical efficiency, and the system cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a thermal power generating unit frequency modulation auxiliary system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a thermal power generating unit frequency modulation auxiliary system according to an embodiment of the present invention.
The existing primary frequency modulation and secondary frequency modulation have different requirements on the capacity of a thermal power generating unit. The power variation range required by the primary frequency modulation of the thermal power generating unit is large (generally required to be not less than +/-6% of the rated power of the unit), but the assessment calculation time is short (generally not more than 1 minute), and the frequency of full power output is not high (not more than ten times a day). In contrast, the range of power variation for the secondary frequency modulation commands is small (typically not more than ± 3% of the rated power of the unit), but the frequency of commands is high (hundreds to thousands of times a day). It can be easily found that primary frequency modulation requires a thermal power generating unit to have the capability of rapidly realizing large power change in a short time, and secondary frequency modulation requires the thermal power generating unit to have the capability of continuously changing small power. On the premise of ensuring the economical efficiency of the energy storage system, the single energy storage system is configured, so that the requirements of primary frequency modulation and secondary frequency modulation of the thermal power generating unit are difficult to meet simultaneously.
In order to solve the problems, in a specific embodiment, the thermal power unit frequency modulation auxiliary system includes a first energy storage device 30, a second energy storage device 40, and an energy storage energy management device 20 connected to a thermal power unit 10, where the energy storage energy management device 20 is configured to collect frequency modulation signals from a power plant remote terminal control unit, a power plant distributed control unit, and a turbine digital electro-hydraulic regulation unit (or other power plant primary frequency modulation frequency signal collection devices), calculate and determine total power that the first energy storage device 30 and the second energy storage device 40 should output and total power that the first energy storage device 30 and the second energy storage device 40 should output respectively after determining that the frequency modulation state of the thermal power unit 10 is a primary frequency modulation state or a secondary frequency modulation state, generate and issue a power instruction to the first energy storage device 30 and the second energy storage device 40 according to a predetermined rule for execution, wherein the first reservoirRated power P of energy device 301Greater than the rated power P of the second energy storage device 402Rated capacity E of said first energy storage means 301Is smaller than the rated capacitance E of the second energy storage device 402。
According to the requirement of primary frequency modulation that a thermal power generating unit 10 has the capacity of quickly realizing large power change in a short time, and secondary frequency modulation requires the requirement of continuously changing small power of the unit, the thermal power generating unit 10 is provided with two energy storage devices, namely a first energy storage device 30 and a second energy storage device 40, which take power and capacitance as main devices respectively, namely a small power device, a large capacitance device, a large power device and a small capacitance device, the first energy storage device 30 can be mainly used in primary frequency modulation, the second energy storage device 40 is mainly used in secondary frequency modulation, the requirements of primary frequency modulation and secondary frequency modulation of the thermal power generating unit 10 are met, free frequency modulation is realized, and the rated capacitance E of the first energy storage device 30 is1Is smaller than the rated capacity E of the second energy storage device 402Therefore, the whole frequency modulation system configuration has more economical efficiency, and the frequency modulation cost is reduced.
In the invention, two different types of energy storage devices are simultaneously connected with the thermal power generating unit 10, one is a power type, and the other is an energy storage type, so that the flexible use in primary frequency modulation and secondary frequency modulation is realized.
However, although the output power may be sufficient, if such an energy storage device is provided directly, the requirement for the energy storage device is high, and the danger of direct operation is high due to the generally required voltage, because in order to solve this problem, in an embodiment of the present invention, the thermal power plant frequency modulation auxiliary system further includes an energy storage transformation device connected to the first energy storage device 30 and the second energy storage device 40, and configured to transform the electric energy output by the first energy storage device 30 and the second energy storage device 40 and output the electric energy to the high-voltage plant electrical equipment of the thermal power plant.
Through adopting energy storage potential device, through the vary voltage processing to first energy memory 30, second energy memory 40's output, just so can make first energy memory 30, second energy memory 40 have less requirement to its actual output voltage, can use lower voltage, reduced use cost, improved the operational safety nature.
The first energy storage device 30 is mainly used for primary frequency modulation and has the characteristics of high power and short discharge time, the first energy storage device 30 comprises at least one of a flywheel energy storage unit, a super capacitor energy storage unit and a power type lithium iron phosphate battery energy storage unit, the total rated power of the first energy storage device 30 is 5% -10% of the rated power of the thermal power unit 10, and the rated discharge time of the first energy storage device 30 is 30s-15 min.
It should be noted that, in the present invention, there is no limitation on the first energy storage device 30, and the rated power and the charging and discharging time period thereof, and in the present invention, the first energy storage device 30 may be composed of a single charging and discharging unit, or may be composed of a plurality of sub-units connected in parallel or in series, which is not limited in the present invention.
Similarly, the second energy storage device 40 is not limited in the present invention, where the second energy storage device 40 includes at least one of a lithium iron phosphate battery energy storage unit, a ternary lithium battery energy storage unit, a lead carbon battery energy storage unit, and a flow battery energy storage unit, the total rated power of the second energy storage device 30 is 1% -5% of the rated power of the thermal power generating unit 10, and the rated power of the second energy storage device 40 is discharged for 30 min-90 min.
It should be noted that, in the present invention, there is no limitation on the second energy storage device 40, and the rated power and the charging and discharging time period thereof, and in the present invention, the second energy storage device 40 may be composed of a single charging and discharging unit, or may be composed of a plurality of sub-units connected in parallel or in series, which is not limited in the present invention.
The specific structures of the first energy storage device 30 and the second energy storage device 40 are not limited in the present invention, and in one embodiment, the first energy storage device 30 includes a first energy storage converter, a power type energy storage unit and a first energy storage unit management unit, and the second energy storage device 40 includes a second energy storage converter, an energy type energy storage unit and a second energy storage unit management unit.
The energy storage converter, the energy storage unit and the management unit are arranged, so that the whole energy storage circuit structure becomes more reliable, and management and control become easy.
In order to further improve the management efficiency, in the frequency modulation process, the power plant management side can check whether the actual energy storage device requiring frequency modulation follows the frequency modulation command after sending the frequency modulation command, and in one embodiment, the energy management device collects and stores output power information from the first energy storage device 30 and the second energy storage device 40, and feeds the output power information back to the power plant remote terminal control unit.
By carrying out information acquisition, storage and feedback, the command sender can obtain the command execution effect in real time, the management efficiency is improved, whether the energy storage device works normally can be obtained, and the use reliability of equipment is improved.
The structure of the energy storage management device is not limited in the present invention, and in order to implement functional differentiated management, in an embodiment, the energy storage management device 20 includes an instruction acquisition unit, an instruction calculation and storage server, and an instruction issuing unit.
By dividing the system into an instruction acquisition unit, an instruction calculation and storage server and an instruction issuing unit, the system has the advantages of single function, reduced structure and more convenient management.
In the invention, the respective emphasis points of the first energy storage device 30 and the second energy storage device 40 are different, but based on the economy, the total rated power of the first energy storage device 30 and the second energy storage device 40 is generally 5% -10% of the rated power of the thermal power generating unit 10.
In order to achieve the effect that various frequency modulation may occur at any time and the execution condition may not be obtained in real time when the energy storage device corresponding to the instruction is sent to execute, in an embodiment of the present invention, the auxiliary system for frequency modulation of a thermal power generating unit further includes a display device connected to the energy storage energy management device 20, and configured to display the frequency modulation state of the thermal power generating unit 10 and the output power information and duration of the first energy storage device 30 and the second energy storage device 40.
Through the display device, the staff can obtain the output power and the duration of the corresponding power equipment of the command sent and the collection in real time, can judge whether this frequency modulation is finished at a glance, and can even set up an evaluation system to carry out operations such as evaluation scoring, such as the power of this frequency modulation and the expected difference, the duration and the expected difference, and then carry out evaluation through a certain algorithm, and the staff can obtain the effect of this frequency modulation through the evaluation of demonstration, thereby providing the basis for the next frequency modulation and realizing more efficient frequency modulation. In addition, whether misoperation exists in the frequency modulation can be judged through the display device, and management efficiency is improved.
The digital electro-hydraulic turbine regulating system (DEH) of the present invention mainly functions to provide a primary frequency-modulated frequency signal, which can also be obtained by other independent frequency measuring devices, and the present invention is not limited thereto.
Since, during the frequency modulation process, a device failure or the like may occur, and once the condition occurs, in addition to the condition obtained at the energy storage device, the condition can also be obtained at the frequency modulation place, which can be realized by collecting power information feedback, in an embodiment of the present invention, the thermal power unit frequency modulation auxiliary system further includes an alarm unit connected to the energy storage energy management device 20, and configured to issue an alarm after the output power information of the first energy storage device 30 or the second energy storage device 40 is compared with the power information corresponding to the regulation command and exceeds a threshold value.
The manner of the alarm unit sending out the alarm is not limited in the present invention, and may be a flashing display on the display device, or a change of a specific font color, such as a change of the current power information and duration information output by the first energy storage device 30 and the second energy storage device 40 from green to red, or other alarms such as sound.
In summary, the thermal power unit frequency modulation auxiliary system provided in the embodiment of the present invention requires that the thermal power unit has the capability of rapidly realizing large power change in a short time according to the primary frequency modulation, and the secondary frequency modulation requires that the thermal power unit has the capability of rapidly realizing large power change in a short timeThe requirement of the thermal power unit for continuous change of small power is that the thermal power unit is provided with a first energy storage device and a second energy storage device which are respectively mainly used for power and energy storage, namely, the first energy storage device is used mainly in primary frequency modulation, the second energy storage device is used mainly in secondary frequency modulation, the requirements of the thermal power unit on primary frequency modulation and secondary frequency modulation are met, free frequency modulation is realized, and the rated capacitance E of the first energy storage device is1Is smaller than the rated capacitance E of the second energy storage device2Therefore, the whole frequency modulation system configuration has more economical efficiency, and the frequency modulation cost is reduced.
The thermal power generating unit frequency modulation auxiliary system provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a thermal power unit frequency modulation auxiliary system, its characterized in that includes first energy memory, second energy memory, the energy memory management device who is connected with the thermal power unit, the energy memory management device is used for gathering the frequency modulation signal from power plant remote terminal control unit, power plant decentralized control unit, steam turbine digital electricity liquid regulating unit, judges after the frequency modulation state of thermal power unit is primary frequency modulation state or secondary frequency modulation state, calculates and confirms the total power that first energy memory, second energy memory should export and the total power that first energy memory, second energy memory should export respectively after, according to predetermined rule generation and with power instruction issue first energy memory and second energy memory carry out, wherein, the rated power P of first energy memory carries out1Is greater than the rated power P of the second energy storage device2Said first isRated capacity E of the energy storage device1Is smaller than the rated capacitance E of the second energy storage device2。
2. A frequency modulation auxiliary system of a thermal power generating unit as claimed in claim 1, further comprising an energy storage transformation device connected to said first energy storage device and said second energy storage device, for transforming the electric energy outputted from said first energy storage device and said second energy storage device and outputting the transformed electric energy to a high-voltage plant electrical apparatus of the thermal power plant.
3. A frequency modulation auxiliary system of a thermal power generating unit according to claim 2, wherein the first energy storage device comprises at least one of a flywheel energy storage unit, a super capacitor energy storage unit and a power type lithium iron phosphate battery energy storage unit, the total rated power of the first energy storage device is 5% -10% of the rated power of the thermal power generating unit, and the rated discharge time of the first energy storage device is 30s-15 min.
4. A frequency modulation auxiliary system of a thermal power generating unit as claimed in claim 3, wherein the second energy storage device comprises at least one of a lithium iron phosphate battery energy storage unit, a ternary lithium battery energy storage unit, a lead carbon battery energy storage unit and a flow battery energy storage unit, the total rated power of the second energy storage device is 1% -5% of the rated power of the thermal power generating unit, and the rated power of the second energy storage device is discharged for 30 min-90 min.
5. A thermal power generating unit frequency modulation auxiliary system as claimed in claim 4, wherein the first energy storage device comprises a first energy storage converter, a power type energy storage unit and a first energy storage unit management unit, and the second energy storage device comprises a second energy storage converter, an energy type energy storage unit and a second energy storage unit management unit.
6. A thermal power generating unit frequency modulation auxiliary system as claimed in claim 5, wherein the energy management device collects and stores output power information from the first energy storage device and the second energy storage device, and feeds the output power information back to the power plant remote terminal control unit.
7. A frequency modulation auxiliary system of a thermal power generating unit as claimed in claim 6, wherein said energy storage energy management device comprises an instruction acquisition unit, an instruction calculation and storage server and an instruction issuing unit.
8. A thermal power generating unit frequency modulation auxiliary system as claimed in claim 7, wherein the total rated power of the first energy storage device and the second energy storage device is 5% -10% of the rated power of the thermal power generating unit.
9. A thermal power generating unit frequency modulation auxiliary system as claimed in claim 8, further comprising a display device connected to the stored energy management device for displaying the frequency modulation status of the thermal power generating unit and the output power information and duration of the first and second energy storage devices.
10. A thermal power generating unit frequency modulation auxiliary system as claimed in claim 9, further comprising an alarm unit connected to said energy storage energy management device for alarming after output power information of said first energy storage device or said second energy storage device is compared with power information corresponding to a regulation command and exceeds a threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638465.1A CN112736936A (en) | 2020-12-31 | 2020-12-31 | Thermal power generating unit frequency modulation auxiliary system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011638465.1A CN112736936A (en) | 2020-12-31 | 2020-12-31 | Thermal power generating unit frequency modulation auxiliary system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112736936A true CN112736936A (en) | 2021-04-30 |
Family
ID=75608795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011638465.1A Pending CN112736936A (en) | 2020-12-31 | 2020-12-31 | Thermal power generating unit frequency modulation auxiliary system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112736936A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374516A (en) * | 2016-09-23 | 2017-02-01 | 国网河南节能服务有限公司 | Establishing method for generalized polymerization distributed type energy storage system |
| CN110601235A (en) * | 2019-10-15 | 2019-12-20 | 西安热工研究院有限公司 | Super capacitor auxiliary frequency modulation system suitable for multiple units of thermal power plant |
-
2020
- 2020-12-31 CN CN202011638465.1A patent/CN112736936A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374516A (en) * | 2016-09-23 | 2017-02-01 | 国网河南节能服务有限公司 | Establishing method for generalized polymerization distributed type energy storage system |
| CN110601235A (en) * | 2019-10-15 | 2019-12-20 | 西安热工研究院有限公司 | Super capacitor auxiliary frequency modulation system suitable for multiple units of thermal power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103337869B (en) | A kind of method of novel battery energy-storage system and function integration design thereof | |
| CN104410105B (en) | Based on dc bus cancellated Intelligent wind power field control method | |
| CN105071438A (en) | Photovoltaic energy storage and power generation integrated grid-connected system | |
| US11509262B2 (en) | Photovoltaic power generation virtual inertia compensation system and method based on super capacitor energy storage | |
| CN112018785B (en) | Receiving-end power grid flywheel energy storage frequency modulation method and system based on frequency disturbance complementation | |
| CN210111621U (en) | Energy storage type backup power supply system of wind power plant wind generating set | |
| CN110488199B (en) | Alarm response method for battery system of high-capacity battery energy storage power station | |
| CN104734196A (en) | Monitoring device of wind, photovoltaic and storage-integrated micro-grid capable of being operated in a grid-connected manner | |
| CN104779644B (en) | Wind power plant grid connection stability assessment method | |
| CN104734194A (en) | Wind, photovoltaic and storage-integrated micro-grid capable of being operated in a grid-connected manner | |
| CN103560533B (en) | The method and system of the level and smooth wind light generation fluctuation of energy-accumulating power station are controlled based on rate of change | |
| CN110061515B (en) | Energy storage monitoring device applied to zinc-iron flow battery of photovoltaic power generation field | |
| CN101728835A (en) | Battery power energy storing device for smoothing output power of wind power generation | |
| CN105939024A (en) | Intelligent distributed type wind power generation system capable of adjusting voltage and power | |
| CN112736936A (en) | Thermal power generating unit frequency modulation auxiliary system | |
| CN109802449A (en) | AGC unit dynamic adaptation method and device based on active power notch | |
| CN111555306B (en) | System and method for participating in regional power grid rapid frequency modulation of wind turbine generator system | |
| TWI736496B (en) | Power control method and power control system | |
| CN114172199A (en) | Method for realizing frequency modulation and virtual inertia response by using energy storage wind power integrated unit | |
| Ji et al. | Collaborative Control of Integrated Generation and Storage for Offshore Wind Turbines | |
| CN203871872U (en) | Ocean-energy hybrid supplementary power supply system | |
| CN111859608A (en) | Energy storage site selection and volume fixing optimization method considering scene of relieving electric power gap | |
| CN203119627U (en) | Intelligent comprehensive management system of base station power supply | |
| CN112713520A (en) | Off-grid wind-solar energy storage intelligent power supply system | |
| CN105186579A (en) | Wind storage system capable of achieving grid-connected operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |