CN117145588A - Primary frequency modulation method for million-grade nuclear turbine - Google Patents

Primary frequency modulation method for million-grade nuclear turbine Download PDF

Info

Publication number
CN117145588A
CN117145588A CN202311018332.8A CN202311018332A CN117145588A CN 117145588 A CN117145588 A CN 117145588A CN 202311018332 A CN202311018332 A CN 202311018332A CN 117145588 A CN117145588 A CN 117145588A
Authority
CN
China
Prior art keywords
frequency modulation
primary frequency
value
instruction value
steam turbine
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
Application number
CN202311018332.8A
Other languages
Chinese (zh)
Inventor
韩磊
范少华
张鹏
王天宇
陈邵颖
史大伟
杜继光
崔栋良
郭德军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Turbine Co Ltd
Original Assignee
Harbin Turbine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin Turbine Co Ltd filed Critical Harbin Turbine Co Ltd
Priority to CN202311018332.8A priority Critical patent/CN117145588A/en
Publication of CN117145588A publication Critical patent/CN117145588A/en
Pending legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/105—Final actuators by passing part of the fluid
    • 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
    • H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

A million-grade nuclear turbine primary frequency modulation method aims at solving the problems that the service life of a steam turbine generator unit is low, the frequency modulation response speed is low and the steady state reaching speed is slow due to the fact that a frequency modulation dead zone is not arranged in the existing primary frequency modulation function; designing a primary frequency modulation function curve according to the unequal rate of the unit and the peak regulation requirement of the power grid; obtaining a rotating speed difference value between the actual rotating speed and the set rotating speed of the steam turbine, and finding a primary frequency modulation component instruction value corresponding to the difference value on the ordinate axis of a primary frequency modulation function curve; when receiving primary frequency modulation input or cutting conditions, adjusting a current primary frequency modulation component instruction value according to the current actual load of the steam turbine to obtain an adjusted primary frequency modulation component instruction value; and controlling the valve position opening of the regulating valve of the steam turbine generator unit according to the regulated primary frequency modulation component command value, the power closed-loop command value of the steam turbine, the load limiter command value and the load regulator command value. The application is used for controlling the valve position opening of the regulating valve of the steam turbine generator unit.

Description

Primary frequency modulation method for million-grade nuclear turbine
Technical Field
The application relates to primary frequency modulation design, and belongs to the technical field of frequency modulation.
Background
According to the specification of grid-connected operation turbine regulating system technical supervision guideline DL/T338-2010 and grid operation guideline DL 1040-2007: and the integrated power grid units are all involved in primary frequency modulation. Therefore, the million nuclear turbine control system needs to have a primary frequency modulation function, and a frequency modulation dead zone is not set in the primary frequency modulation function at present, so that a regulating valve of the steam turbine generator unit frequently acts, and the service life of the steam turbine generator unit is influenced; in addition, the frequency modulation response speed of the conventional primary frequency modulation function in the power closed loop mode of the steam turbine generator unit cannot meet the frequency modulation response speed required by a power grid, and the steam turbine generator unit cannot reach a steady state within a specified time. Therefore, when the grid frequency of the power grid changes, the existing primary frequency modulation function is not provided with a frequency modulation dead zone, so that the service life of the steam turbine generator unit is low, the frequency modulation response speed is slow, the steady-state speed is slow, and the requirement of the power industry standard on primary frequency modulation is not met.
Disclosure of Invention
The application aims to solve the problems that the service life of a steam turbine generator set is low, the frequency modulation response speed is slow, the steady state speed is slow and the primary frequency modulation requirement of the electric power industry standard is not met due to the fact that a frequency modulation dead zone is not arranged in the conventional primary frequency modulation function, and provides a primary frequency modulation method of a million-grade nuclear turbine.
A primary frequency modulation method for a million-grade nuclear turbine, comprising the following steps:
step 1, designing a primary frequency modulation function curve according to the unequal rate of a unit and the peak regulation requirement of a power grid, wherein the abscissa axis of the primary frequency modulation function curve is the rotating speed deviation of a steam turbine, and the ordinate axis is a primary frequency modulation component instruction value;
step 2, obtaining a rotating speed difference value between the actual rotating speed and the set rotating speed of the steam turbine, and finding a primary frequency modulation component instruction value corresponding to the difference value on the ordinate axis of a primary frequency modulation function curve;
step 3, when receiving primary frequency modulation input or cutting conditions, adjusting a current primary frequency modulation component instruction value according to the current actual load of the steam turbine to obtain an adjusted primary frequency modulation component instruction value;
and 4, controlling the valve position opening of the regulating valve of the steam turbine generator unit according to the regulated primary frequency modulation component command value, the power closed-loop command value of the steam turbine, the load limiter command value and the load regulator command value, so as to control the valve position opening of the regulating valve of the steam turbine generator unit through primary frequency modulation.
Preferably, in step 3, the current primary frequency modulation component command value is adjusted according to the current actual load of the steam turbine, and the specific process is as follows:
if the current actual load of the steam turbine is equal to or smaller than a set low-limit threshold value and the current obtained primary frequency modulation component instruction value is larger than or equal to zero, frequency modulation is carried out on the steam turbine according to the current primary frequency modulation component instruction value, and if the current obtained primary frequency modulation component instruction value is smaller than zero, the current primary frequency modulation component instruction value is adjusted to be the primary frequency modulation component instruction value at the last moment;
and if the current actual load of the steam turbine is equal to or greater than the set high-limit threshold value and the current obtained primary frequency modulation component instruction value is smaller than or equal to zero, frequency modulation is carried out on the steam turbine according to the current primary frequency modulation component instruction value, and if the current primary frequency modulation component instruction value is greater than zero, the current primary frequency modulation component instruction value is adjusted to be the primary frequency modulation component instruction value at the last moment.
Preferably, the specific process of step 4 is:
the method comprises the steps of obtaining a power closed-loop instruction value of a steam turbine, summing the power closed-loop instruction value and a primary frequency modulation component instruction value of the steam turbine to obtain a summed instruction value, selecting a minimum value from the summed instruction value and a numerical value 100, selecting a maximum value from the minimum value and the numerical value 0, generating a valve position control instruction through PID operation after the difference between the maximum value and the current actual load of the steam turbine, summing the valve position control instruction value, a load limiter instruction value and the primary frequency modulation component instruction value at the last moment to obtain a load closed-loop instruction value, simultaneously summing the load regulator instruction value and the primary frequency modulation component instruction value at the last moment to obtain a regulator loop instruction value, and selecting the minimum value from the load closed-loop instruction value and the regulator loop instruction value as a comprehensive valve position instruction value for controlling the valve position opening of a regulating valve of a steam turbine generator unit.
Preferably, in step 1, the primary frequency modulation function curve is set up: the frequency modulation dead zone range is-0.25 Hz, the frequency modulation upper and lower limit value is-10% rated power and the primary frequency modulation unequal rate is 4.5%.
Preferably, in step 3, the primary frequency modulation input or cut-off conditions include: manual input, manual cut-off, speed failure, engine outlet breaker opening, fast load and load hold-up.
Preferably, the current primary frequency modulation component command value is adjusted to a rate of 1%/s.
Preferably, in step 3, further includes:
and converting the adjusted primary frequency modulation component instruction value into a corresponding load value, and displaying the load value by a man-machine interaction picture.
The beneficial effects of the application are as follows:
in order to meet the requirement of a power grid on primary frequency modulation performance index of a network access unit, on the basis of control logic of an original million steam turbine, original functions and performance indexes of a control system are kept unchanged, and only a primary frequency modulation control strategy is optimized and improved.
Firstly, designing a primary frequency modulation function curve according to the unequal rate of a unit and the peak shaving requirement of a power grid, wherein the frequency modulation dead zone range is set to be-0.25 Hz to 0.25Hz (the frequency modulation dead zone can be adjusted according to the requirement of the power grid of the unit on the network frequency response sensitivity of the steam turbine generator unit); setting the upper limit value and the lower limit value of frequency modulation to be-10% rated power to 10% rated power (the peak regulation requirement of the turbo generator set can be adjusted according to the power grid to which the set belongs); the primary frequency modulation inequality rate is set to be 4.5%. And obtaining a corresponding primary frequency modulation component instruction value according to the rotating speed difference value of the actual rotating speed and the set rotating speed of the steam turbine, continuously adjusting the primary frequency modulation component instruction value according to the actual load of the steam turbine, and controlling the valve position opening of the regulating valve of the steam turbine generator unit. Therefore, the application designs the frequency modulation dead zone range to: the primary frequency modulation is started to act only when the frequency modulation dead zone range is exceeded, and the primary frequency modulation component instruction value is zero in the primary frequency modulation dead zone range, so that the primary frequency modulation cannot act in the dead zone, and frequent action of a regulating valve of the steam turbine generator unit is avoided.
In addition, when the primary frequency modulation function of the application is used for power closed loop, namely when the power closed loop instruction value of the steam turbine is obtained, the power closed loop instruction value and the primary frequency modulation component instruction value of the steam turbine are directly overlapped on a final instruction so as to achieve quick response; and when the primary frequency modulation action is performed, the speed can be adjusted to be 1%/s, and the speed is high, so that the generation of the primary frequency modulation component command value is ensured not to be over-regulated, and the steam turbine generator unit can reach a steady state within a specified time.
For example, one technical index standard of the power grid is: when the power grid frequency change exceeds the primary frequency modulation dead zone of the unit, the unit completely responds within 15 seconds according to the unit response target; and when the power grid frequency change exceeds 45 seconds of the primary frequency modulation dead zone, the average value of the actual power of the unit and the response target deviation of the unit is within +/-3% of the rated active power of the unit, and a feedforward link and a frequency modulation instruction generation rate setting are added. The primary frequency modulation function curve is set, so that primary frequency modulation can be performed when the range of the primary frequency modulation dead zone of the unit is exceeded; and the speed of the primary frequency modulation component command value is 1%/s, so that the corresponding requirement of 15 seconds is completely met, and the power grid requirement is completely met.
Drawings
FIG. 1 is a flow chart of a primary frequency modulation method of a million-grade nuclear turbine;
FIG. 2 is a plot of a primary frequency modulation function;
FIG. 3 is a flow chart for generating adjusted primary frequency modulation component command values;
FIG. 4 is a flow chart for generating an integrated valve position command value.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The application is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
The first embodiment is as follows: referring to fig. 1 and 2, a primary frequency modulation method of a million-grade nuclear turbine according to the present embodiment is described, and the method includes the following steps:
step 1, designing a primary frequency modulation function curve according to the unequal rate of a unit and the peak regulation requirement of a power grid, wherein the abscissa axis of the primary frequency modulation function curve is the rotating speed deviation of a steam turbine, and the ordinate axis is a primary frequency modulation component instruction value;
step 2, obtaining a rotating speed difference value between the actual rotating speed and the set rotating speed of the steam turbine, and finding a primary frequency modulation component instruction value corresponding to the difference value on the ordinate axis of a primary frequency modulation function curve;
step 3, when receiving primary frequency modulation input or cutting conditions, adjusting a current primary frequency modulation component instruction value according to the current actual load of the steam turbine to obtain an adjusted primary frequency modulation component instruction value;
and 4, controlling the valve position opening of the regulating valve of the steam turbine generator unit according to the regulated primary frequency modulation component command value, the power closed-loop command value of the steam turbine, the load limiter command value and the load regulator command value, so as to control the valve position opening of the regulating valve of the steam turbine generator unit through primary frequency modulation.
In this embodiment, the primary frequency modulation is active in three load control modes, i.e., the load regulator, the load limiter, and the load closed loop.
The primary frequency modulation has the following advantages: the output force of the steam turbine can be regulated and changed according to the requirements of a local power grid so as to adapt to the power consumption requirement of the real-time power grid.
The second embodiment is as follows: referring to fig. 3, the present embodiment is further defined by the primary frequency modulation method of a million-level nuclear turbine according to the first embodiment, in the present embodiment, in step 3, a current primary frequency modulation component command value is adjusted according to a current actual load of the turbine, which specifically includes:
if the current actual load of the steam turbine is equal to or smaller than a set low-limit threshold value and the current obtained primary frequency modulation component instruction value is larger than or equal to zero, frequency modulation is carried out on the steam turbine according to the current primary frequency modulation component instruction value, and if the current obtained primary frequency modulation component instruction value is smaller than zero, the current primary frequency modulation component instruction value is adjusted to be the primary frequency modulation component instruction value at the last moment;
and if the current actual load of the steam turbine is equal to or greater than the set high-limit threshold value and the current obtained primary frequency modulation component instruction value is smaller than or equal to zero, frequency modulation is carried out on the steam turbine according to the current primary frequency modulation component instruction value, and if the current primary frequency modulation component instruction value is greater than zero, the current primary frequency modulation component instruction value is adjusted to be the primary frequency modulation component instruction value at the last moment.
In fig. 3, F (x) represents a primary frequency modulation component command value corresponding to the difference found on the ordinate axis of the primary frequency modulation function curve, where the abscissa-ordinate correspondence relationship in the primary frequency modulation function curve is:
in fig. 3, LIMIT indicates that the switching rate is 1%/S at the time of primary switching, ensuring that switching is completed in 10 seconds (switching is completed). The low threshold may be 373.71Mw (30% rated load) and the high threshold may be 1245.7Mw (100% rated load).
If the current actual load of the steam turbine is equal to or smaller than a set low-limit threshold value, indicating that the actual load is low, if the primary frequency modulation component command is smaller than zero at the moment, keeping the primary frequency modulation component command value at the last moment command value so as not to enable the primary frequency modulation component command value to continuously reduce the load; similarly, if the current actual load of the steam turbine is equal to or greater than the set high-limit threshold, the actual load is high, and if the primary frequency modulation component command value is greater than zero at this time, the primary frequency modulation component command value is kept at the last time command value so as not to continue increasing the load.
K in fig. 3 represents a designed chirp unit conversion factor that can convert a chirp component command value in% into a value in MW. If the normal rated power is 1245.7MW, the corresponding command value should be 100%, and 1245.7/100= 12.457 is used as the conversion coefficient, so the conversion coefficient is 12.457.
And a third specific embodiment: referring to fig. 4, the present embodiment is further limited to the primary frequency modulation method of a million-level nuclear turbine according to the first or second embodiment, and the specific process of step 4 in the present embodiment is as follows:
the method comprises the steps of obtaining a power closed-loop instruction value of a steam turbine, summing the power closed-loop instruction value and a primary frequency modulation component instruction value of the steam turbine to obtain a summed instruction value, selecting a minimum value from the summed instruction value and a numerical value 100, selecting a maximum value from the minimum value and the numerical value 0, generating a valve position control instruction through PID operation after the difference between the maximum value and the current actual load of the steam turbine, summing the valve position control instruction value, a load limiter instruction value and the primary frequency modulation component instruction value at the last moment to obtain a load closed-loop instruction value, simultaneously summing the load regulator instruction value and the primary frequency modulation component instruction value at the last moment to obtain a regulator loop instruction value, and selecting the minimum value from the load closed-loop instruction value and the regulator loop instruction value as a comprehensive valve position instruction value for controlling the valve position opening of a regulating valve of a steam turbine generator unit.
In fig. 4, the ALR command value indicates a power closed-loop command value of the steam turbine.
As can be seen from fig. 4, the valve position control command is made up of the sum of the pilot command value + the ALR command value after the pilot is applied in order to avoid reverse regulation of the closed loop when the pilot is applied in the power closed loop control mode.
The minimum value is selected from the summed command values and a value of 100, which is set to 100 in order to prevent the summed total command from exceeding 100, the nuclear reactor being at risk of overpower.
Three power control loops (load regulator control, load limiter control and load closed-loop control) are designed in the existing steam turbine control system, wherein the load regulator control and the load limiter control are open-loop control, a valve control instruction value is manually given by an operator, and power feedback is not needed to participate in logic operation, so that the load limiter instruction value and the load regulator instruction value are set values; the power closed-loop control needs power feedback to participate in logic operation to generate a valve control command value, so that the power closed-loop command value of the steam turbine needs to be acquired in real time.
The specific embodiment IV is as follows: the present embodiment is further defined by the primary frequency modulation method of a million-level nuclear turbine according to the first embodiment, wherein in the present embodiment, in step 1, a primary frequency modulation function curve is set: the frequency modulation dead zone range is-0.25 Hz, the frequency modulation upper and lower limit value is-10% rated power and the primary frequency modulation unequal rate is 4.5%.
In this embodiment, in fig. 1, the primary frequency modulation function curve is designed to represent the frequency modulation inequality, the frequency modulation dead zone and the frequency modulation amplitude.
Fifth embodiment: the present embodiment is further defined by the primary frequency modulation method of a million-level nuclear turbine according to the first embodiment, wherein in the step 3, primary frequency modulation input or cutting conditions include: manual input, manual cut-off, speed failure, engine outlet breaker opening, fast load and load hold-up.
In fig. 3, a primary frequency modulation input or cut-off condition is shown.
Specific embodiment six: the present embodiment is further defined by the one million-level nuclear turbine primary frequency modulation method according to the first embodiment, wherein the current primary frequency modulation component command value is adjusted to a rate of 1%/s.
In fig. 3, a frequency modulation rate of 1%/s is shown.
Seventh embodiment: the present embodiment is further defined by the primary frequency modulation method of a million-level nuclear turbine according to the first embodiment, where in step 3, the method further includes:
and converting the adjusted primary frequency modulation component instruction value into a corresponding load value, and displaying the load value by a man-machine interaction picture.
In this embodiment, a primary frequency modulation command unit conversion coefficient K is designed, and the MMI man-machine interaction screen can display a primary frequency modulation command value (unit:%) as a corresponding load value (unit: MW).
Although the application herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present application. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present application as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (7)

1. The primary frequency modulation method for the million-grade nuclear turbine is characterized by comprising the following steps of:
step 1, designing a primary frequency modulation function curve according to the unequal rate of a unit and the peak regulation requirement of a power grid, wherein the abscissa axis of the primary frequency modulation function curve is the rotating speed deviation of a steam turbine, and the ordinate axis is a primary frequency modulation component instruction value;
step 2, obtaining a rotating speed difference value between the actual rotating speed and the set rotating speed of the steam turbine, and finding a primary frequency modulation component instruction value corresponding to the difference value on the ordinate axis of a primary frequency modulation function curve;
step 3, when receiving primary frequency modulation input or cutting conditions, adjusting a current primary frequency modulation component instruction value according to the current actual load of the steam turbine to obtain an adjusted primary frequency modulation component instruction value;
and 4, controlling the valve position opening of the regulating valve of the steam turbine generator unit according to the regulated primary frequency modulation component command value, the power closed-loop command value of the steam turbine, the load limiter command value and the load regulator command value, so as to control the valve position opening of the regulating valve of the steam turbine generator unit through primary frequency modulation.
2. The primary frequency modulation method of a million-grade nuclear turbine according to claim 1, wherein in step 3, according to the current actual load of the turbine, the current primary frequency modulation component command value is adjusted, and the specific process is as follows:
if the current actual load of the steam turbine is equal to or smaller than a set low-limit threshold value and the current obtained primary frequency modulation component instruction value is larger than or equal to zero, frequency modulation is carried out on the steam turbine according to the current primary frequency modulation component instruction value, and if the current obtained primary frequency modulation component instruction value is smaller than zero, the current primary frequency modulation component instruction value is adjusted to be the primary frequency modulation component instruction value at the last moment;
and if the current actual load of the steam turbine is equal to or greater than the set high-limit threshold value and the current obtained primary frequency modulation component instruction value is smaller than or equal to zero, frequency modulation is carried out on the steam turbine according to the current primary frequency modulation component instruction value, and if the current primary frequency modulation component instruction value is greater than zero, the current primary frequency modulation component instruction value is adjusted to be the primary frequency modulation component instruction value at the last moment.
3. The primary frequency modulation method of the million-grade nuclear turbine according to claim 1 or 2, wherein the specific process of the step 4 is as follows:
the method comprises the steps of obtaining a power closed-loop instruction value of a steam turbine, summing the power closed-loop instruction value and a primary frequency modulation component instruction value of the steam turbine to obtain a summed instruction value, selecting a minimum value from the summed instruction value and a numerical value 100, selecting a maximum value from the minimum value and the numerical value 0, generating a valve position control instruction through PID operation after the difference between the maximum value and the current actual load of the steam turbine, summing the valve position control instruction value, a load limiter instruction value and the primary frequency modulation component instruction value at the last moment to obtain a load closed-loop instruction value, simultaneously summing the load regulator instruction value and the primary frequency modulation component instruction value at the last moment to obtain a regulator loop instruction value, and selecting the minimum value from the load closed-loop instruction value and the regulator loop instruction value as a comprehensive valve position instruction value for controlling the valve position opening of a regulating valve of a steam turbine generator unit.
4. The primary frequency modulation method of a million-grade nuclear turbine according to claim 1, wherein in step 1, a primary frequency modulation function curve is set: the frequency modulation dead zone range is-0.25 Hz, the frequency modulation upper and lower limit value is-10% rated power and the primary frequency modulation unequal rate is 4.5%.
5. The primary frequency modulation method of a million-grade nuclear turbine of claim 1, wherein in step 3, primary frequency modulation input or cut-off conditions comprise: manual input, manual cut-off, speed failure, engine outlet breaker opening, fast load and load hold-up.
6. The method for primary frequency modulation of a million-grade nuclear turbine of claim 1, wherein the current primary frequency modulation component command value is adjusted to a rate of 1%/s.
7. The primary frequency modulation method of a million-grade nuclear turbine of claim 1, further comprising, in step 3:
and converting the adjusted primary frequency modulation component instruction value into a corresponding load value, and displaying the load value by a man-machine interaction picture.
CN202311018332.8A 2023-08-14 2023-08-14 Primary frequency modulation method for million-grade nuclear turbine Pending CN117145588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311018332.8A CN117145588A (en) 2023-08-14 2023-08-14 Primary frequency modulation method for million-grade nuclear turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311018332.8A CN117145588A (en) 2023-08-14 2023-08-14 Primary frequency modulation method for million-grade nuclear turbine

Publications (1)

Publication Number Publication Date
CN117145588A true CN117145588A (en) 2023-12-01

Family

ID=88905281

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311018332.8A Pending CN117145588A (en) 2023-08-14 2023-08-14 Primary frequency modulation method for million-grade nuclear turbine

Country Status (1)

Country Link
CN (1) CN117145588A (en)

Similar Documents

Publication Publication Date Title
EP2075463B2 (en) Wind power installation and method of operating it
AU2004208656B2 (en) Voltage control for wind generators
CN115000991B (en) Thermal power-flywheel energy storage cooperative frequency modulation control method and system
CN102646980A (en) Novel primary frequency-modulation compensation control method of unit thermal generator set
Nasiri et al. PID-type terminal sliding mode control for permanent magnet synchronous generator-based enhanced wind energy conversion systems
CN112531769A (en) Primary frequency modulation control method for thermal power plant
CN110716425A (en) Electric heat coordination control method for cogeneration unit
CN112196732B (en) Fan master control pitch and torque instruction processing system
US4178763A (en) System for minimizing valve throttling losses in a steam turbine power plant
CN112072678A (en) Primary frequency modulation control method for wind turbine generator
CN117145588A (en) Primary frequency modulation method for million-grade nuclear turbine
Al-Nussairi et al. Design of a Two-Area Automatic Generation Control Using a Single Input Fuzzy Gain Scheduling PID Controller.
EP0004415A1 (en) System for minimizing valve throttling losses in a steam turbine power plant
Zhu et al. Comparison of loads for wind turbine down-regulation strategies
JP2005151769A (en) Power supply system
RU2278427C2 (en) Method for automatic control of water moderated water cooled reactor plant power
CN219733478U (en) Main control auxiliary system and unit coordination control system of steam turbine
Aziz et al. Intelligent frequency regulation in the wind integrated control area
Shaqarin et al. Linear Parameter Varying Power Regulation of Variable Speed Pitch Manipulated Wind Turbine in the Full Load Regime
KR102432715B1 (en) Pure Variable Pressure Operating System for Substitution of 500MW Generator Operating Reserve
CN112983578B (en) Control system and method for deep peak regulation low-pressure cylinder exhaust temperature
CN114961887B (en) Primary frequency modulation method of steam turbine with steam supplementing valve
CN114844060A (en) Control system and method for improving primary frequency modulation performance index of thermal power generating unit
CN115182792A (en) Control method for opening degree of main steam regulating valve of steam turbine
Nisa et al. Constrained discrete mode control of supercapacitor energy storage system for improved AGC of a multi-area power system with effects of wind power

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