CN116093975A - Quick frequency adjustment method and system for thermal power generating unit based on network source cooperation - Google Patents
Quick frequency adjustment method and system for thermal power generating unit based on network source cooperation Download PDFInfo
- Publication number
- CN116093975A CN116093975A CN202310157984.3A CN202310157984A CN116093975A CN 116093975 A CN116093975 A CN 116093975A CN 202310157984 A CN202310157984 A CN 202310157984A CN 116093975 A CN116093975 A CN 116093975A
- Authority
- CN
- China
- Prior art keywords
- power grid
- unit
- frequency
- obtaining
- power
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
-
- 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 application relates to the technical field of power grid frequency modulation, and provides a quick frequency modulation method and a quick frequency modulation system of a thermal power generating unit based on network source cooperation, wherein the method comprises the following steps: acquiring real-time operation data of a target thermal power generating unit to obtain a unit operation data set; dynamically monitoring a power grid accessed by the target thermal power generating unit in real time to obtain power grid frequency monitoring data; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor. The method can solve the technical problems that the frequency modulation response speed of the thermal power unit is low and the frequency modulation causes harm to the quality of the thermal power unit.
Description
Technical Field
The application relates to the technical field of power grid frequency modulation, in particular to a quick frequency modulation method and system for a thermal power generating unit based on network source cooperation.
Background
The frequency of the power grid is determined by the power generation power and the power utilization load, and when the power generation power and the power utilization load are equal in size, the frequency of the power grid is stable; when the generated power is larger than the power load, the power grid frequency is increased; when the generated power is smaller than the electric load, the grid frequency is reduced.
With the rapid development of new energy construction such as ultra-high voltage transmission, wind power, solar energy and the like, the requirements for safe and stable operation of the power grid are higher and higher. Because the predictability of new energy power generation such as wind power, solar energy is poor, the load frequency modulation pressure facing thermal power generation is also increasing. The existing thermal power generating unit frequency modulation is mainly carried out in a mode of manually receiving instructions, response time is long, and frequency modulation speed is low to influence safe operation of a power grid.
In summary, the technical problems of low frequency modulation response speed of the thermal power unit and harm of frequency modulation to the quality of the thermal power unit exist in the prior art.
Disclosure of Invention
Based on the above, it is necessary to provide a fast frequency adjustment method and system for a thermal power generating unit based on network source cooperation.
A quick frequency adjustment method of a thermal power generating unit based on network source cooperation comprises the following steps: acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set; the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
In one embodiment, the obtaining the grid frequency amplitude difference further includes: presetting a power grid frequency floating threshold; when the power grid frequency monitoring data exceeds the power grid frequency floating threshold value, acquiring real-time power grid frequency data; and obtaining the power grid frequency amplitude difference based on the power grid fixed frequency and the real-time power grid frequency data.
In one embodiment, the obtaining the optimal load compensation amount according to the grid frequency amplitude difference based on the grid fixed frequency value further includes: based on a fixed frequency value of a power grid, obtaining a power grid load compensation quantity according to the power grid frequency amplitude difference; obtaining unit parameters and unit historical operation data of the intra-provincial grid-connected generator unit; and obtaining the optimal load compensation amount based on the power grid load compensation amount, the unit parameters and the historical operation data.
In one embodiment, the obtaining the optimal load compensation amount based on the grid load compensation amount, the crew parameters, and the crew history operation data further comprises: extracting data of the unit parameters to obtain the rotation speed inequality rate of the unit steam turbine; obtaining unit historical operating power based on the unit historical operating data; obtaining a preset load compensation quantity of the unit according to the unequal rotation speed rate of the steam turbine of the unit and the historical running power of the unit; and obtaining the optimal load compensation amount based on the power grid load compensation amount and the preset load compensation amount of the unit.
In one embodiment, the obtaining the preset load compensation amount of the unit according to the unequal rotation speed rate of the steam turbine of the unit and the historical operation power of the unit further comprises: numerical value standardization processing is carried out on the rotational speed unequal rate of the steam turbine of the unit, and a rotational speed unequal rate coefficient is obtained; obtaining a frequency modulation load limiting amplitude according to the historical operating power of the unit; and obtaining the preset load compensation quantity of the unit according to the rotation speed unequal rate coefficient and the historical running power of the unit based on the frequency modulation load limiting amplitude.
In one embodiment, the obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation amount further comprises: obtaining unit operation real-time power based on the unit operation data set; obtaining a preset unit operation power according to the real-time unit operation power and the optimal load compensation quantity; and obtaining the primary frequency modulation compensation factor through the preset power of the unit operation.
In one embodiment, further comprising: obtaining a frequency modulation limit threshold based on the unit parameters; when the frequency modulation amplitude difference of the power grid exceeds the frequency modulation limit threshold value, generating early warning information; and sending the early warning information to power grid operation staff.
A quick frequency adjustment system of a thermal power generating unit based on network source cooperation comprises:
the unit operation data acquisition module is used for acquiring real-time operation data of the target thermal power unit through the data acquisition device to acquire a unit operation data set;
the power grid frequency monitoring module is used for dynamically monitoring a power grid accessed by the target thermal power generating unit in real time through a power grid frequency monitoring device to obtain power grid frequency monitoring data;
the power grid frequency amplitude difference obtaining module is used for obtaining power grid frequency amplitude differences when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value;
the optimal load compensation quantity obtaining module is used for obtaining the optimal load compensation quantity according to the power grid frequency amplitude difference based on the power grid fixed frequency value;
the primary frequency modulation compensation factor obtaining module is used for obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity;
and the power grid load frequency modulation module is used for guiding the target thermal power unit to carry out power grid load frequency modulation through the primary frequency modulation compensation factor.
A computer device comprising a memory storing a computer program and a processor which when executing the computer program performs the steps of: acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set; the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of: acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set; the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
The quick frequency modulation method and system for the thermal power generating unit based on network source cooperation can solve the technical problems that the frequency modulation response speed of the thermal power generating unit is low and the frequency modulation causes harm to the quality of the thermal power generating unit. Acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set; the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor. The response time required by frequency modulation can be shortened, adverse effects of frequency modulation on the quality of the generator set can be avoided, and safe and stable operation of a power grid is ensured.
The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.
Drawings
Fig. 1 is a schematic flow chart of a fast frequency adjustment method of a thermal power generating unit based on network source cooperation;
fig. 2 is a schematic flow chart of obtaining a power grid frequency amplitude difference in a rapid frequency adjustment method of a thermal power generating unit based on network source coordination;
FIG. 3 is a schematic diagram of a computer device;
fig. 4 is a schematic structural diagram of a rapid frequency modulation system of a thermal power generating unit based on network source cooperation.
Reference numerals illustrate: the system comprises a unit operation data acquisition module 1, a power grid frequency monitoring module 2, a power grid frequency amplitude difference acquisition module 3, an optimal load compensation quantity acquisition module 4, a primary frequency modulation compensation factor acquisition module 5 and a power grid load frequency modulation module 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
As shown in fig. 1, the present application provides a rapid frequency modulation method for a thermal power generating unit based on network source cooperation, which includes:
step S100: acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set;
step S200: the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained;
specifically, real-time operation data acquisition is carried out on the target thermal power generating unit through various sensors in the data acquisition device, a unit operation data set is obtained, the unit operation data set comprises data such as real-time output power, output current, output voltage, steam turbine rotating speed and the like, and the obtained unit operation data is transmitted to a quick frequency regulation system of the thermal power generating unit through a signal transmission module carried by the data acquisition device. And carrying out real-time frequency monitoring on a power grid incorporated by the target thermal power generating unit through a power grid frequency monitoring device to obtain power grid frequency monitoring data, and transmitting the power grid frequency monitoring data to the rapid frequency regulating system of the thermal power generating unit. And providing original data support for next step of frequency modulation analysis by obtaining the set operation data set and the power grid frequency monitoring data.
Step S300: when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference;
as shown in fig. 2, in one embodiment, step S300 of the present application further includes:
step S310: presetting a power grid frequency floating threshold;
step S320: when the power grid frequency monitoring data exceeds the power grid frequency floating threshold value, acquiring real-time power grid frequency data;
step S330: and obtaining the power grid frequency amplitude difference based on the power grid fixed frequency and the real-time power grid frequency data.
Specifically, a grid frequency floating threshold is preset, the grid frequency floating threshold can be set based on the operation condition of a regional grid in a self-defined mode, grid frequency monitoring data are obtained, the grid frequency monitoring data are judged, when the grid frequency monitoring data are larger than the maximum value of the grid frequency floating threshold or smaller than the minimum value of the grid frequency floating threshold, the current grid is judged to need to carry out load frequency modulation, real-time grid frequency data of the time node are obtained, the known grid fixed frequency is 50HZ, the grid fixed frequency is subtracted by the real-time grid frequency data, the grid frequency amplitude difference is obtained, and support is provided for obtaining the grid load compensation quantity in the next step through obtaining the grid frequency amplitude difference.
Step S400: based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid;
in one embodiment, step S400 of the present application further includes:
step S410: based on a fixed frequency value of a power grid, obtaining a power grid load compensation quantity according to the power grid frequency amplitude difference;
step S420: obtaining unit parameters and unit historical operation data of the intra-provincial grid-connected generator unit;
step S430: and obtaining the optimal load compensation amount based on the power grid load compensation amount, the unit parameters and the historical operation data.
In one embodiment, step S430 of the present application further includes:
step S431: extracting data of the unit parameters to obtain the rotation speed inequality rate of the unit steam turbine;
step S432: obtaining unit historical operating power based on the unit historical operating data;
step S433: obtaining a preset load compensation quantity of the unit according to the unequal rotation speed rate of the steam turbine of the unit and the historical running power of the unit;
in one embodiment, step S433 of the present application further includes:
step S4331: numerical value standardization processing is carried out on the rotational speed unequal rate of the steam turbine of the unit, and a rotational speed unequal rate coefficient is obtained;
step S4332: obtaining a frequency modulation load limiting amplitude according to the historical operating power of the unit;
step S4333: and obtaining the preset load compensation quantity of the unit according to the rotation speed unequal rate coefficient and the historical running power of the unit based on the frequency modulation load limiting amplitude.
Step S434: and obtaining the optimal load compensation amount based on the power grid load compensation amount and the preset load compensation amount of the unit.
In particular, the load compensation quantity of the whole power grid, namely the required compensation power, is calculated according to the fixed frequency value 50HZ of the power grid and the obtained frequency amplitude difference of the power grid. And obtaining unit parameters and unit historical operation data of the grid-connected thermal generator unit in the province or the target area, wherein the unit parameters comprise data such as unit rated power, unequal steam turbine rotating speed and the like, and the unit historical operation data comprises data such as unit actual output power and the like. And obtaining the variable rate of the rotating speed of the steam turbine of the thermal power unit according to the unit parameters, wherein the variable rate of the rotating speed of the steam turbine is used for measuring the frequency modulation characteristic of the thermal power unit. And then obtaining the historical operation actual power of the unit according to the historical operation data of the unit. And carrying out numerical standardization processing on the rotation speed inequality of the steam turbine, wherein the numerical standardization processing refers to obtaining rotation speed inequality coefficient according to the range of the rotation speed inequality of the steam turbine by using specific numerical representation, the rotation speed inequality coefficient is used for measuring the frequency modulation capability of the thermal power unit, and the larger the range of the rotation speed inequality is, the larger the rotation speed inequality coefficient is, so that fire is indicated. The stronger the frequency modulation capability of the motor group. And then obtaining a frequency modulation load limiting amplitude according to the actual running power of the unit, wherein the frequency modulation load limiting amplitude is set according to the running power of the thermal power unit, for example: when the running power of the thermal power unit is more than or equal to 250MW, the limiting amplitude is more than or equal to 10%, and when the running power of the thermal power unit is more than or equal to 250MW and less than or equal to 350MW, the limiting amplitude is more than or equal to 8%. According to the frequency modulation load limiting amplitude and the actual running power of the thermal power generating unit, calculating a unit load compensation quantity, multiplying the unit load compensation quantity by a corresponding rotation speed unequal rate coefficient to obtain a unit preset load compensation quantity, and finally multiplying the power grid load compensation quantity by the ratio of a target thermal power unit preset load compensation quantity to all unit preset load compensation quantities to obtain an optimal load compensation quantity, wherein the optimal load compensation quantity is obtained through the difference of rotation speed unequal rates of the steam turbines.
Step S500: obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity;
in one embodiment, step S500 of the present application further includes:
step S510: obtaining unit operation real-time power based on the unit operation data set;
step S520: obtaining a preset unit operation power according to the real-time unit operation power and the optimal load compensation quantity;
step S530: and obtaining the primary frequency modulation compensation factor through the preset power of the unit operation.
Step S600: and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
The method comprises the steps of obtaining actual output power of a unit and actual rotating speed of a steam turbine according to unit operation data, adding the actual output power of the unit to the most load compensation quantity to obtain unit operation preset power, namely total power required by unit frequency modulation, obtaining the preset rotating speed of the steam turbine by multiplying the actual rotating speed of the steam turbine by the ratio of the actual output power of the unit to the unit operation preset power, adding the preset rotating speed of the steam turbine to a primary frequency modulation compensation factor, and automatically guiding the target thermal power unit to perform frequency modulation according to the preset rotating speed of the steam turbine to reduce response time required by frequency modulation. The method solves the technical problems that the frequency modulation response speed of the thermal power unit is low and the frequency modulation causes harm to the quality of the thermal power unit. The response time required by frequency modulation can be shortened, adverse effects of frequency modulation on the quality of the generator set can be avoided, and safe and stable operation of a power grid is ensured.
In one embodiment, step S700 of the present application further includes:
step S710: obtaining a frequency modulation limit threshold based on the unit parameters;
step S720: when the frequency modulation amplitude difference of the power grid exceeds the frequency modulation limit threshold value, generating early warning information;
step S730: and sending the early warning information to power grid operation staff.
Specifically, a frequency modulation limit threshold is set according to the maximum frequency modulation amplitude of the unit in the unit parameters, when the frequency modulation amplitude difference of the power grid is larger than the frequency modulation limit threshold, the system automatically generates early warning information when the required frequency modulation load exceeds the frequency modulation capacity range of the thermal power unit, and the early warning information is sent to power grid staff through mobile interconnection equipment to remind the power grid staff to carry out frequency modulation on the power grid by adopting other emergency plans, so that the stable operation of the power grid is ensured.
In one embodiment, as shown in fig. 4, a rapid frequency modulation system of a thermal power generating unit based on network source cooperation is provided, which comprises: the system comprises a unit operation data acquisition module 1, a power grid frequency monitoring module 2, a power grid frequency amplitude difference acquisition module 3, an optimal load compensation quantity acquisition module 4, a primary frequency modulation compensation factor acquisition module 5 and a power grid load frequency modulation module 6, wherein:
the unit operation data acquisition module 1 is used for acquiring real-time operation data of a target thermal power unit through a data acquisition device to acquire a unit operation data set;
the power grid frequency monitoring module 2 is used for dynamically monitoring a power grid accessed by the target thermal power generating unit in real time through a power grid frequency monitoring device to obtain power grid frequency monitoring data;
the power grid frequency amplitude difference obtaining module 3 is used for obtaining power grid frequency amplitude differences when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value;
the optimal load compensation quantity obtaining module 4 is used for obtaining the optimal load compensation quantity according to the power grid frequency amplitude difference based on the power grid fixed frequency value;
the primary frequency modulation compensation factor obtaining module 5 is used for obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity;
and the power grid load frequency modulation module 6 is used for guiding the target thermal power generating unit to carry out power grid load frequency modulation through the primary frequency modulation compensation factor.
In one embodiment, the system further comprises:
the power grid frequency floating threshold presetting module is used for presetting a power grid frequency floating threshold;
the real-time power grid frequency data acquisition module is used for acquiring real-time power grid frequency data when the power grid frequency monitoring data exceeds the power grid frequency floating threshold value;
the power grid frequency amplitude difference obtaining module is used for obtaining the power grid frequency amplitude difference based on the power grid fixed frequency and the real-time power grid frequency data.
In one embodiment, the system further comprises:
the power grid load compensation quantity obtaining module is used for obtaining power grid load compensation quantity according to the power grid frequency amplitude difference based on a power grid fixed frequency value;
the grid-connected unit data acquisition module is used for acquiring unit parameters and unit historical operation data of the intra-provincial grid-connected generator unit;
and the optimal load compensation quantity obtaining module is used for obtaining the optimal load compensation quantity based on the power grid load compensation quantity, the unit parameters and the historical operation data.
In one embodiment, the system further comprises:
the steam turbine rotating speed unequal rate obtaining module is used for extracting data of the unit parameters to obtain the unit steam turbine rotating speed unequal rate;
the unit historical operation power obtaining module is used for obtaining unit historical operation power based on the unit historical operation data;
the unit preset load compensation quantity obtaining module is used for obtaining the unit preset load compensation quantity according to the unit steam turbine rotation speed unequal rate and the unit historical operating power;
and the optimal load compensation quantity obtaining module is used for obtaining the optimal load compensation quantity based on the power grid load compensation quantity and the preset load compensation quantity of the unit.
In one embodiment, the system further comprises:
the rotating speed unequal rate coefficient obtaining module is used for carrying out numerical standardization processing on the rotating speed unequal rate of the unit steam turbine to obtain a rotating speed unequal rate coefficient;
the frequency modulation load limit amplitude obtaining module is used for obtaining frequency modulation load limit amplitude according to the historical operating power of the unit;
the unit preset load compensation quantity obtaining module is used for obtaining the unit preset load compensation quantity according to the rotation speed unequal rate coefficient and the unit historical operating power based on the frequency modulation load limiting amplitude.
In one embodiment, the system further comprises:
the unit operation real-time power obtaining module is used for obtaining unit operation real-time power based on the unit operation data set;
the unit operation preset power obtaining module is used for obtaining unit operation preset power according to the unit operation real-time power and the optimal load compensation quantity;
and the primary frequency modulation compensation factor obtaining module is used for obtaining the primary frequency modulation compensation factor through the preset power of the unit operation.
In one embodiment, the system further comprises:
the frequency modulation limit threshold obtaining module is used for obtaining a frequency modulation limit threshold based on the unit parameters;
the early warning information generation module is used for generating early warning information when the frequency modulation amplitude difference of the power grid exceeds the frequency modulation limit threshold value;
and the early warning information sending module is used for sending the early warning information to power grid operation staff.
The specific embodiment of a fast frequency adjustment system of a thermal power generating unit based on network source cooperation can be referred to the above embodiment of a fast frequency adjustment method of a thermal power generating unit based on network source cooperation, and will not be described herein. All or part of modules in the rapid frequency regulating device of the thermal power generating unit based on network source cooperation can be realized through software, hardware and combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 3. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing news data, time attenuation factors and other data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize a quick frequency adjustment evaluation method of the thermal power generating unit based on network source cooperation.
It will be appreciated by those skilled in the art that the structure shown in fig. 3 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided comprising a memory storing a computer program and a processor implementing the following steps when executing the computer program: acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set; the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
In one embodiment, a computer readable storage medium is provided having stored thereon a computer program which when executed by a processor performs the steps of: acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set; the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained; when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference; based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid; obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity; and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
In summary, the application provides a rapid frequency adjustment method and system for a thermal power generating unit based on network source cooperation, which have the following technical effects:
1. the thermal power generating unit frequency modulation response speed is low, and the technical problem that the thermal power generating unit quality is damaged by frequency modulation is solved. And guiding the target thermal power generating unit to carry out grid load frequency modulation by generating a primary frequency modulation compensation factor. The response time required by frequency modulation can be shortened, adverse effects of frequency modulation on the quality of the generator set can be avoided, and safe and stable operation of a power grid is ensured.
2. By obtaining the optimal load compensation quantity, the frequency modulation load of each thermal power unit can be reasonably arranged according to the frequency modulation load of the power grid, the load pressure of the thermal power unit is reduced, and meanwhile, the damage of frequency modulation to the thermal power unit machine can be reduced.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A quick frequency regulation method of a thermal power generating unit based on network source cooperation is characterized by comprising the following steps:
acquiring real-time operation data of a target thermal power generating unit through a data acquisition device to obtain a unit operation data set;
the power grid accessed by the target thermal power generating unit is dynamically monitored in real time through a power grid frequency monitoring device, and power grid frequency monitoring data are obtained;
when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value, obtaining a power grid frequency amplitude difference;
based on a fixed frequency value of a power grid, obtaining an optimal load compensation quantity according to the frequency amplitude difference of the power grid;
obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity;
and guiding the target thermal power generating unit to carry out grid load frequency modulation through the primary frequency modulation compensation factor.
2. The method of claim 1, wherein the obtaining a grid frequency amplitude difference further comprises:
presetting a power grid frequency floating threshold;
when the power grid frequency monitoring data exceeds the power grid frequency floating threshold value, acquiring real-time power grid frequency data;
and obtaining the power grid frequency amplitude difference based on the power grid fixed frequency and the real-time power grid frequency data.
3. The method of claim 1, wherein the obtaining an optimal load compensation amount from the grid frequency amplitude difference based on the grid fixed frequency value further comprises:
based on a fixed frequency value of a power grid, obtaining a power grid load compensation quantity according to the power grid frequency amplitude difference;
obtaining unit parameters and unit historical operation data of the intra-provincial grid-connected generator unit;
and obtaining the optimal load compensation amount based on the power grid load compensation amount, the unit parameters and the historical operation data.
4. The method of claim 3, wherein the obtaining the optimal load compensation amount based on the grid load compensation amount, the crew parameters, and the crew history operational data further comprises:
extracting data of the unit parameters to obtain the rotation speed inequality rate of the unit steam turbine;
obtaining unit historical operating power based on the unit historical operating data;
obtaining a preset load compensation quantity of the unit according to the unequal rotation speed rate of the steam turbine of the unit and the historical running power of the unit;
and obtaining the optimal load compensation amount based on the power grid load compensation amount and the preset load compensation amount of the unit.
5. The method of claim 4, wherein said deriving a unit preset load offset from said unit steam turbine speed differential and said unit historical operating power further comprises:
numerical value standardization processing is carried out on the rotational speed unequal rate of the steam turbine of the unit, and a rotational speed unequal rate coefficient is obtained;
obtaining a frequency modulation load limiting amplitude according to the historical operating power of the unit;
and obtaining the preset load compensation quantity of the unit according to the rotation speed unequal rate coefficient and the historical running power of the unit based on the frequency modulation load limiting amplitude.
6. The method of claim 1, wherein said deriving a chirp compensation factor from said crew operating data set and said optimal load compensation amount further comprises:
obtaining unit operation real-time power based on the unit operation data set;
obtaining a preset unit operation power according to the real-time unit operation power and the optimal load compensation quantity;
and obtaining the primary frequency modulation compensation factor through the preset power of the unit operation.
7. The method of claim 1, wherein the method further comprises:
obtaining a frequency modulation limit threshold based on the unit parameters;
when the frequency modulation amplitude difference of the power grid exceeds the frequency modulation limit threshold value, generating early warning information;
and sending the early warning information to power grid operation staff.
8. Quick frequency regulating system of thermal power generating unit based on network source cooperation, characterized in that, the system includes:
the unit operation data acquisition module is used for acquiring real-time operation data of the target thermal power unit through the data acquisition device to acquire a unit operation data set;
the power grid frequency monitoring module is used for dynamically monitoring a power grid accessed by the target thermal power generating unit in real time through a power grid frequency monitoring device to obtain power grid frequency monitoring data;
the power grid frequency amplitude difference obtaining module is used for obtaining power grid frequency amplitude differences when the power grid frequency monitoring data exceeds a power grid frequency floating threshold value;
the optimal load compensation quantity obtaining module is used for obtaining the optimal load compensation quantity according to the power grid frequency amplitude difference based on the power grid fixed frequency value;
the primary frequency modulation compensation factor obtaining module is used for obtaining a primary frequency modulation compensation factor according to the unit operation data set and the optimal load compensation quantity;
and the power grid load frequency modulation module is used for guiding the target thermal power unit to carry out power grid load frequency modulation through the primary frequency modulation compensation factor.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310157984.3A CN116093975A (en) | 2023-02-23 | 2023-02-23 | Quick frequency adjustment method and system for thermal power generating unit based on network source cooperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310157984.3A CN116093975A (en) | 2023-02-23 | 2023-02-23 | Quick frequency adjustment method and system for thermal power generating unit based on network source cooperation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116093975A true CN116093975A (en) | 2023-05-09 |
Family
ID=86208366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310157984.3A Pending CN116093975A (en) | 2023-02-23 | 2023-02-23 | Quick frequency adjustment method and system for thermal power generating unit based on network source cooperation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116093975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394396A (en) * | 2023-12-11 | 2024-01-12 | 天津国能津能滨海热电有限公司 | Frequency modulation method, frequency modulation device, storage medium and electronic equipment |
-
2023
- 2023-02-23 CN CN202310157984.3A patent/CN116093975A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394396A (en) * | 2023-12-11 | 2024-01-12 | 天津国能津能滨海热电有限公司 | Frequency modulation method, frequency modulation device, storage medium and electronic equipment |
| CN117394396B (en) * | 2023-12-11 | 2024-02-23 | 天津国能津能滨海热电有限公司 | Frequency modulation method, frequency modulation device, storage medium and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3618216B1 (en) | Power control method, device and system for wind power station | |
| US9556852B2 (en) | Method of determining individual set points in a power plant controller, and a power plant controller | |
| EP2896099B1 (en) | A method of determining individual set points in a power plant controller, and a power plant controller | |
| US20140316592A1 (en) | Selective droop response control for a wind turbine power plant | |
| CN116093975A (en) | Quick frequency adjustment method and system for thermal power generating unit based on network source cooperation | |
| CN109256858B (en) | Virtual synchronous generator system, communication method thereof and new energy control system | |
| CN114285058B (en) | Parameter setting method of energy storage system and energy storage system | |
| CN105717793A (en) | Optimizing control method and system capable of ensuring motion direction of primary frequency modulation | |
| KR101338008B1 (en) | Method and system for compensating reactive power of wind power equipment | |
| CN115425660A (en) | Frequency modulation control method and device, readable storage medium and electronic equipment | |
| US11070061B2 (en) | Virtual reservoir storing energy for a hydroelectric power plant | |
| US20230006443A1 (en) | Active power control in renewable power plants for grid stabilisation | |
| CN114123237A (en) | Thermal power and new energy frequency modulation and inertia online monitoring system and method with cloud edge cooperation | |
| CN113422392A (en) | Intelligent power station equipment control system based on edge calculation | |
| CN112600223A (en) | Primary frequency modulation automatic switching control system based on power grid frequency | |
| CN116581787B (en) | Monitoring and evaluating method and system for energy storage frequency modulation of unit | |
| CN112134311B (en) | Control method, device, equipment and storage medium for small hydropower station power grid | |
| CN116169687B (en) | Voltage control method and device for multi-type new energy power generation unit | |
| KR20200004705A (en) | Apparatus and method for controlling output of microgrid | |
| CN217904027U (en) | Control system for primary frequency modulation of power grid | |
| Pratama et al. | Operational Road Map in North Sulawesi and Gorontalo Power Grid Considering the Intermittent Photovoltaic Penetration | |
| CN114498936B (en) | Distributed power supply regulation and control system, method and device | |
| CN115411748B (en) | Adjusting method, adjusting device and adjusting system for frequency of photovoltaic power generation system | |
| CN116505584A (en) | Rapid control method and system for wind farm power | |
| CN117526444A (en) | Power station generating capacity control method, device, equipment and readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |