CN104821766A - Nuclear power station half-speed turbine primary frequency modulation control method and control system thereof - Google Patents
Nuclear power station half-speed turbine primary frequency modulation control method and control system thereof Download PDFInfo
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Abstract
The invention discloses a nuclear power station half-speed turbine primary frequency modulation control method and system. The method comprises the following steps that a target rotating speed value and an actually measured rotating speed value are received, and working frequency of a current half-speed turbine is calculated according to the target rotating speed value and the actually measured rotating speed value; the rated frequency of a primary frequency modulation dead band is arranged to be -1.25Hz-+1.5Hz in advance; whether a primary frequency modulation dead band switching signal is received is judged, and working frequency is outputted if the judgment result is yes; or working frequency and the rated frequency are compared, and zero or processing frequency after processing of the primary frequency modulation dead band is outputted; working frequency or processing frequency is received and frequency modulation processing is performed on working frequency or processing frequency, and a frequency contribution value used for controlling opening degree of a turbine steam inlet valve and working of a reactor is outputted; and opening degree of the turbine steam inlet valve and working of the reactor are controlled according to the frequency contribution value. With application of the nuclear power station half-speed turbine primary frequency modulation control method, the risk of overpower caused by power fluctuation of the reactor can be effectively reduced by expanding range of the rated frequency of the primary frequency modulation dead band.
Description
Technical field
The present invention relates to nuclear power station turbine control system, particularly relate to nuclear power station Half Speed steam turbine primary frequency modulation control method and control system thereof.
Background technology
When external load change causes mains frequency to change, in electrical network, the regulating system of each operating unit of paired running will change the power of unit according to respective static characteristic, to be suitable for the needs that external load changes, the automatic regulating power of this regulating system, changes the method for amplitude for primary frequency modulation to reduce mains frequency.Primary frequency modulation is a kind of droop control, and being has poor automatic adjustment to mains frequency, and to reach new balance, and having the change of mains frequency restriction function within the specific limits, is the important means ensureing power grid security.Primary frequency modulation dead band is for preventing the action that steam turbine pitch is unnecessary when electrical network frequency difference changes among a small circle and the frequency difference arranged, only having when frequency change overfrequency, just play regulatory role.
In existing nuclear power station Half Speed steam turbine primary frequency control system, primary frequency modulation dead band adjustable extent is too small, and export not restriction, and steam turbine load rejection, grid disturbance, super to accelerate, the situation such as steam turbine pressure or SD restriction time can automatically exit, cause when unit Operation at full power, mains frequency slightly fluctuates, and primary frequency modulation dead band can increase rotating speed or the spatial load forecasting of steam turbine, causes reactor capability to increase, aggravation electric network fault, and then cause potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect of prior art, provides a kind of nuclear power station Half Speed steam turbine primary frequency modulation control method and control system thereof.
The technical solution adopted for the present invention to solve the technical problems is: nuclear power station Half Speed steam turbine primary frequency modulation control method, comprises the steps:
S1: receiving target tachometer value and rotary speed measure value, and the operating frequency calculating current Half Speed steam turbine according to described rotating speed of target value and described rotary speed measure value;
S2: pre-set the rated frequency in primary frequency modulation dead band for-1.25Hz ~+1.5Hz;
S3: judge whether to receive primary frequency modulation dead band switching signal, if so, then export described operating frequency, performs step S4; If not, then process is compared to described operating frequency and described rated frequency, if described operating frequency is within described rated frequency range, then export zero; If described operating frequency is outside described rated frequency range, then export the process frequency after primary frequency modulation dead band processes, perform step S4;
S4: receive described operating frequency or described process frequency, and frequency modulation process is carried out to described operating frequency or described process frequency, export the frequency contributions value for controlling steam turbine inlet valve aperture and reactor work;
S5: according to described frequency contributions value, controls described steam turbine inlet valve aperture and reactor work.
Preferably, described step S1 comprises: receiving target tachometer value and rotary speed measure value, and subtraction process is carried out to described rotating speed of target value and described rotary speed measure value, obtain its rotating speed deviate, carry out speed-frequency conversion process according to described rotating speed deviate again, obtain the operating frequency of current Half Speed steam turbine.
Preferably, described primary frequency modulation dead band switching signal comprises manually excision signal and the non-grid-connected order of unit.
Preferably, the non-grid-connected order of described unit comprises circuit breaker cut-off signal or gate out switch cut-off signal.
Preferably, described step S4 comprises: receive described operating frequency or process frequency, and described operating frequency or process frequency are carried out division process with the synchronous gradient preset, obtain initial primary frequency modulation to export, again described initial primary frequency modulation is exported and compare with the height limits value scope preset, if described initial primary frequency modulation exports within height limits value scope, then directly export described initial primary frequency modulation and export as frequency contributions value; If described initial primary frequency modulation exports outside height limits value scope, then export described height limits value scope as frequency contributions value.
Preferably, described height limits value scope is-10% ~+10%.
Preferably, described step S5 also comprises: receive rotating speed control command and load control order, and described frequency contributions value, described rotating speed control command and load control order are processed, export described rotary speed measure value and load measurement value, and export described rotary speed measure value to step S1.
The present invention also provides a kind of nuclear power station Half Speed steam turbine primary frequency modulation control system, this system comprises frequency computation part module, the primary frequency modulation dead band module be connected with described frequency computation part module, dead band are excised control module, excised the frequency modulation processing module that control module is connected and the working control module be connected with described frequency modulation processing module with described dead band, and described dead band excision control module is connected with described frequency modulation processing module with described frequency computation part module, described primary frequency modulation dead band module respectively;
Frequency computation part module: for receiving target tachometer value and rotary speed measure value, and the operating frequency calculating current Half Speed steam turbine according to described rotating speed of target value and described rotary speed measure value;
Primary frequency modulation dead band module: for pre-setting the rated frequency in primary frequency modulation dead band for-1.25Hz ~+1.5Hz;
Dead band excision control module: receiving primary frequency modulation dead band switching signal for judging whether, if so, then exporting described operating frequency; If not, then process is compared to described operating frequency and described rated frequency, if described operating frequency is within described rated frequency range, then export zero; If described operating frequency is outside described rated frequency range, then export the process frequency after primary frequency modulation dead band processes;
Frequency modulation processing module: for receiving described operating frequency or described process frequency, and frequency modulation process being carried out to described operating frequency or described process frequency, exporting the frequency contributions value for controlling steam turbine inlet valve aperture and reactor work;
Working control module: for according to described frequency contributions value, control described steam turbine inlet valve aperture and reactor work.
Preferably, the speed-frequency computing unit that described frequency computation part module comprises rotating speed deviation computing unit and is connected with described rotating speed deviation computing unit, described rotating speed deviation computing unit is used for carrying out subtraction process to the rotating speed of target value received and rotary speed measure value, obtains its rotating speed deviate; Described speed-frequency computing unit is used for carrying out speed-frequency conversion process according to described rotating speed deviate, obtains the operating frequency of current Half Speed steam turbine.
Preferably, dead band excision control module comprises dead band excision signal generation unit for generating primary frequency modulation dead band switching signal, excise the excision switch that signal is connected with described dead band, the input of described excision switch is connected with described primary frequency modulation dead band module with described frequency computation part module respectively, and output is connected with described frequency modulation processing module.
Preferably, the described dead band excision signal generation unit manual excision signal comprised for generating manually excision signal generates subelement and the non-grid-connected order generation subelement of the unit for generating the non-grid-connected order of unit.
Preferably, described frequency modulation processing module comprising gradient generation unit for generating synchronous gradient, excising the divider that control module is connected with described gradient generation unit and the height limiting unit for generating height limits value scope be connected with described divider with described dead band; Described divider is used for described operating frequency or process frequency to carry out division process with the synchronous gradient preset, and obtains initial primary frequency modulation and exports; Described height limiting unit is used for described initial primary frequency modulation to export to process with described height limits value scope, output frequency contribution margin.
Preferably, also comprise be connected with described working control module respectively for generating the rotating speed control command generation unit of rotating speed control command and the load control order generation unit for generating load control order, described working control module processes described frequency contributions value, described rotating speed control command and load control order, export described rotary speed measure value and load measurement value, and export described rotary speed measure value to described frequency computation part module.
The present invention compared with prior art tool has the following advantages: nuclear power station Half Speed steam turbine primary frequency modulation control method provided by the present invention and system, by expanding the rated frequency range in primary frequency modulation dead band, effectively can reduce reactor capability fluctuation and causing superpower risk.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the flow chart of nuclear power station Half Speed steam turbine primary frequency modulation control method in the embodiment of the present invention 1.
Fig. 2 is the schematic diagram of nuclear power station Half Speed steam turbine primary frequency modulation control method in the embodiment of the present invention 1.
Fig. 3 is the theory diagram of nuclear power station Half Speed steam turbine primary frequency modulation control system in the embodiment of the present invention 2.
In figure: 100, frequency computation part module; 110, rotating speed deviation computing unit; 120, speed-frequency computing unit; 200, primary frequency modulation dead band module; 300, dead band excision control module; 310, dead band excision signal generation unit; 311, manually excision signal generates subelement; 312, the non-grid-connected order of unit generates subelement; 320, switch is excised; 400, frequency modulation processing module; 410, gradient generation unit; 420, divider; 430, height limiting unit; 500, working control module; 510, rotating speed control command generation unit; 520, load control order generation unit.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
Embodiment 1
Fig. 1 and Fig. 2 illustrates the nuclear power station Half Speed steam turbine primary frequency modulation control method in the present embodiment.This nuclear power station Half Speed steam turbine primary frequency modulation control method comprises the steps:
S1: receiving target tachometer value and rotary speed measure value, and the operating frequency calculating current Half Speed steam turbine according to mark tachometer value and rotary speed measure value.As shown in Figure 2, nuclear power station Half Speed steam turbine receiving target tachometer value and rotary speed measure value, first carry out subtraction process to rotating speed of target value and rotary speed measure value, obtains its rotating speed deviate, carry out speed-frequency conversion process according to rotating speed deviate again, calculate the operating frequency of current Half Speed steam turbine.
S2: pre-set the rated frequency in primary frequency modulation dead band for-1.25Hz ~+1.5Hz.Understandably, this rated frequency is determined by Half Speed steam turbine machine unit characteristic and grid requirements, and this rated frequency can also adopt system definite value to limit, particularly, and system definite value-(-1.25Hz/50Hz)=2.5%;
-(+1.5Hz/50Hz)=-3%, namely rated frequency is the scope of-1.25Hz ~+1.5Hz correspondence system definite value was-3% ~ 2.5% (as shown in Figure 2).
S3: judge whether to receive primary frequency modulation dead band switching signal, if so, then output services frequency, perform step S4; If not, then process is compared to operating frequency and rated frequency, judge operating frequency whether within aforementioned rated frequency range, if so, then export zero, no longer carry out subsequent treatment; If not, then export the process frequency after primary frequency modulation dead band processes and perform step S4.Particularly, this primary frequency modulation dead band switching signal is only limitted to manually excise signal and the non-grid-connected order of unit, does not affect excision primary frequency modulation dead band by grid disturbance, super acceleration, steam turbine load rejection, steam turbine pressure or SD restriction etc.The non-grid-connected order of this unit comprises circuit breaker cut-off signal or gate out switch cut-off signal.
S4: receive operating frequency or process frequency, and frequency modulation process is carried out to operating frequency or process frequency, export the frequency contributions value for controlling steam turbine inlet valve aperture and reactor work.Particularly, step S4 comprises reception operating frequency or process frequency, and operating frequency or process frequency are carried out division process with the synchronous gradient preset, obtain initial primary frequency modulation to export, again initial primary frequency modulation is exported and compare with the height limits value scope preset, if initial primary frequency modulation exports within height limits value scope, then directly export this initial primary frequency modulation and export as frequency contributions value; If initial primary frequency modulation exports outside height limits value scope, then export height limits value scope as frequency contributions value.Understandably, this synchronous gradient is for the fixing ratio system of of controlling Half Speed steam turbine inlet valve aperture.This height limits value scope is-10% ~+10%.
S5: according to frequency contributions value, controls steam turbine inlet valve aperture and reactor work.Particularly, step S5 can also process according to frequency contributions value and the rotating speed received control command or load control order, for controlling steam turbine inlet valve aperture, and calculate rotary speed measure value or load measurement value, and export rotary speed measure value to step S1 and carry out cycle calculations.
Implement nuclear power station Half Speed steam turbine primary frequency modulation control method provided by the present invention, by expanding the rated frequency range in primary frequency modulation dead band, increase the height limits value scope processing procedure that primary frequency modulation exports, effectively can reduce reactor capability fluctuation and cause superpower risk.And, expand the rated frequency range in primary frequency modulation dead band, corresponding abandon the operating modes such as grid disturbance, super acceleration, steam turbine load rejection, steam turbine pressure and SD restriction under exit the design in primary frequency modulation dead band, avoid the power of the assembling unit fluctuation because grid disturbance causes, affect the normal operation of unit.Adopt this method, effectively can improve the control of nuclear power station Half Speed steam turbine set steady, from long-term economic benefit, effectively can improve the vibration of the power of the assembling unit under grid disturbance operating mode and prevent from reactor overpower from running there is obvious effect.
Embodiment 2
Fig. 3 illustrates the nuclear power station Half Speed steam turbine primary frequency modulation control system in the present embodiment, this system comprises frequency computation part module 100, the primary frequency modulation dead band module 200 be connected with frequency computation part module 100, dead band excision control module 300, the frequency modulation processing module 400 that control module 300 is connected is excised with dead band, and the working control module 500 to be connected with frequency modulation processing module 400, dead band excision control module 300 respectively with frequency computation part module 100, primary frequency modulation dead band module 200 is connected with frequency modulation processing module 400, be connected with frequency modulation processing module 400 with primary frequency modulation dead band module 200 for controlling switching frequency computing module 100.
Particularly, frequency computation part module 100 for receiving target tachometer value and rotary speed measure value, and calculates the operating frequency of current Half Speed steam turbine according to rotating speed of target value and rotary speed measure value.Further, the frequency computation part module 100 speed-frequency computing unit 120 that comprises rotating speed deviation computing unit 110 and be connected with rotating speed deviation computing unit 110.Understandably, rotating speed deviation computing unit 110, for carrying out subtraction process to the rotating speed of target value received and rotary speed measure value, obtains its rotating speed deviate.Speed-frequency computing unit 120, for carrying out speed-frequency conversion process according to rotating speed deviate, obtains the operating frequency of current Half Speed steam turbine.
Primary frequency modulation dead band module 200 is for pre-setting the rated frequency in primary frequency modulation dead band for-1.25Hz ~+1.5Hz.Understandably, this rated frequency is determined by Half Speed steam turbine machine unit characteristic and grid requirements, and this rated frequency can also adopt system definite value to limit, particularly, and system definite value-(-1.25Hz/50Hz)=2.5%;-(+1.5Hz/50Hz)=-3%, namely rated frequency is the scope of-1.25Hz ~+1.5Hz correspondence system definite value is-3% ~ 2.5%.
Dead band excision control module 300 receive primary frequency modulation dead band switching signal for judging whether, if so, then output services frequency to frequency modulation processing module 400; If not, then process is compared to operating frequency and rated frequency, if operating frequency is within rated frequency range, then export zero, no longer carry out subsequent treatment; If operating frequency is outside rated frequency range, then export the process frequency after primary frequency modulation dead band processes to frequency modulation processing module 400.Particularly, dead band excision control module 300 comprises dead band excision signal generation unit 310 for generating primary frequency modulation dead band switching signal, excise the excision switch 320 that signal is connected with dead band, the input of excision switch 320 is connected with primary frequency modulation dead band module 200 with frequency computation part module 100 respectively, output is connected with frequency modulation processing module 400, for being connected with frequency modulation processing module 400 with primary frequency modulation dead band module 200 according to the primary frequency modulation dead band excision signal switching frequency computation part module 100 received.
Further, the dead band excision signal generation unit 310 manual excision signal comprised for generating manually excision signal generates subelement 311 and the non-grid-connected order generation subelement 312 of the unit for generating the non-grid-connected order of unit.Primary frequency modulation dead band switching signal is only limitted to manually excise signal and the non-grid-connected order of unit, does not affect excision primary frequency modulation dead band by grid disturbance, super acceleration, steam turbine load rejection, steam turbine pressure or SD restriction etc.The non-grid-connected order of this unit comprises circuit breaker cut-off signal or gate out switch cut-off signal.
Frequency modulation processing module 400: for receiving operating frequency or the process frequency of the input of dead band excision control module 300, and frequency modulation process being carried out to operating frequency or process frequency, exporting the frequency contributions value for controlling steam turbine inlet valve aperture and reactor work.
Particularly, frequency modulation processing module 400 comprising gradient generation unit 410 for generating synchronous gradient, excising the divider 420 that control module 300 is connected with gradient generation unit 410 and the height limiting unit 430 for generating height limits value scope be connected with divider 420 with dead band; Process frequency, for operating frequency is carried out division process with synchronous gradient, is maybe carried out division process with synchronous gradient by divider 420, obtains initial primary frequency modulation and exports; Height limiting unit 430 processes with height limits value scope for being exported by initial primary frequency modulation, output frequency contribution margin.Particularly, if initial primary frequency modulation exports within height limits value scope, then directly export this initial primary frequency modulation and export as frequency contributions value; If initial primary frequency modulation exports outside height limits value scope, then export height limits value scope as frequency contributions value.Understandably, this synchronous gradient is for the fixing ratio system of of controlling Half Speed steam turbine inlet valve aperture.This height limits value scope is-10% ~+10%.
Working control module 500: for according to frequency contributions value, control steam turbine inlet valve aperture and reactor work.Also comprise be connected with working control module 500 respectively for generating the rotating speed control command generation unit 510 of rotating speed control command and the load control order generation unit 520 for generating load control order, working control module 500 pairs of frequency contributions values, rotating speed control command and load control order process, output speed measured value and load measurement value, and export rotary speed measure value to frequency computation part module 100.
Implement nuclear power station Half Speed steam turbine primary frequency modulation control system provided by the present invention, by expanding the rated frequency range in primary frequency modulation dead band, increase the height limits value scope processing procedure that primary frequency modulation exports, effectively can reduce reactor capability fluctuation and cause superpower risk.And, expand the rated frequency range in primary frequency modulation dead band, corresponding abandon the operating modes such as grid disturbance, super acceleration, steam turbine load rejection, steam turbine pressure and SD restriction under exit the design in primary frequency modulation dead band, avoid the power of the assembling unit fluctuation because grid disturbance causes, affect the normal operation of unit.Adopt native system, effectively can improve the control of nuclear power station Half Speed steam turbine set steady, from long-term economic benefit, effectively can improve the vibration of the power of the assembling unit under grid disturbance operating mode and prevent from reactor overpower from running there is obvious effect.
The present invention is described by several specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to substituting to the present invention.In addition, for particular condition or concrete condition, various amendment can be made to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes fallen within the scope of the claims in the present invention.
Claims (13)
1. nuclear power station Half Speed steam turbine primary frequency modulation control method, is characterized in that: comprise the steps:
S1: receiving target tachometer value and rotary speed measure value, and the operating frequency calculating current Half Speed steam turbine according to described rotating speed of target value and described rotary speed measure value;
S2: pre-set the rated frequency in primary frequency modulation dead band for-1.25Hz ~+1.5Hz;
S3: judge whether to receive primary frequency modulation dead band switching signal, if so, then export described operating frequency, performs step S4; If not, then process is compared to described operating frequency and described rated frequency, if described operating frequency is within described rated frequency range, then export zero; If described operating frequency is outside described rated frequency range, then export the process frequency after primary frequency modulation dead band processes, perform step S4;
S4: receive described operating frequency or described process frequency, and frequency modulation process is carried out to described operating frequency or described process frequency, export the frequency contributions value for controlling steam turbine inlet valve aperture and reactor work;
S5: according to described frequency contributions value, controls described steam turbine inlet valve aperture and reactor work.
2. nuclear power station Half Speed steam turbine primary frequency modulation control method according to claim 1, it is characterized in that: described step S1 comprises: receiving target tachometer value and rotary speed measure value, and subtraction process is carried out to described rotating speed of target value and described rotary speed measure value, obtain its rotating speed deviate, carry out speed-frequency conversion process according to described rotating speed deviate again, obtain the operating frequency of current Half Speed steam turbine.
3. nuclear power station Half Speed steam turbine primary frequency modulation control method according to claim 2, is characterized in that: described primary frequency modulation dead band switching signal comprises manually excision signal and the non-grid-connected order of unit.
4. nuclear power station Half Speed steam turbine primary frequency modulation control method according to claim 3, is characterized in that: the non-grid-connected order of described unit comprises circuit breaker cut-off signal or gate out switch cut-off signal.
5. nuclear power station Half Speed steam turbine primary frequency modulation control method according to claim 1, it is characterized in that: described step S4 comprises: receive described operating frequency or process frequency, and described operating frequency or process frequency are carried out division process with the synchronous gradient preset, obtain initial primary frequency modulation to export, again described initial primary frequency modulation is exported and compare with the height limits value scope preset, if described initial primary frequency modulation exports within height limits value scope, then directly export described initial primary frequency modulation and export as frequency contributions value; If described initial primary frequency modulation exports outside height limits value scope, then export described height limits value scope as frequency contributions value.
6. nuclear power station Half Speed steam turbine primary frequency modulation control method according to claim 5, is characterized in that: described height limits value scope is-10% ~+10%.
7. according to any one of claim 1 ~ 6 nuclear power station Half Speed steam turbine primary frequency modulation control method, it is characterized in that: described step S5 also comprises: receive rotating speed control command and load control order, and described frequency contributions value, described rotating speed control command and load control order are processed, export described rotary speed measure value and load measurement value, and export described rotary speed measure value to step S1.
8. a nuclear power station Half Speed steam turbine primary frequency modulation control system, it is characterized in that: comprise frequency computation part module (100), primary frequency modulation dead band module (200) be connected with described frequency computation part module (100), dead band excision control module (300), the frequency modulation processing module (400) that control module (300) is connected is excised with described dead band, and the working control module (500) to be connected with described frequency modulation processing module (400), described dead band excision control module (300) respectively with described frequency computation part module (100), described primary frequency modulation dead band module (200) is connected with described frequency modulation processing module (400),
Frequency computation part module (100): for receiving target tachometer value and rotary speed measure value, and the operating frequency calculating current Half Speed steam turbine according to described rotating speed of target value and described rotary speed measure value;
Primary frequency modulation dead band module (200): for pre-setting the rated frequency in primary frequency modulation dead band for-1.25Hz ~+1.5Hz;
Dead band excision control module (300): receiving primary frequency modulation dead band switching signal for judging whether, if so, then exporting described operating frequency; If not, then process is compared to described operating frequency and described rated frequency, if described operating frequency is within described rated frequency range, then export zero; If described operating frequency is outside described rated frequency range, then export the process frequency after primary frequency modulation dead band processes;
Frequency modulation processing module (400): for receiving described operating frequency or described process frequency, and frequency modulation process being carried out to described operating frequency or described process frequency, exporting the frequency contributions value for controlling steam turbine inlet valve aperture and reactor work;
Working control module (500): for according to described frequency contributions value, control described steam turbine inlet valve aperture and reactor work.
9. nuclear power station Half Speed steam turbine primary frequency modulation control system according to claim 8, it is characterized in that: the speed-frequency computing unit (120) that described frequency computation part module (100) comprises rotating speed deviation computing unit (110) and is connected with described rotating speed deviation computing unit (110), described rotating speed deviation computing unit (110), for carrying out subtraction process to the rotating speed of target value received and rotary speed measure value, obtains its rotating speed deviate; Described speed-frequency computing unit (120), for carrying out speed-frequency conversion process according to described rotating speed deviate, obtains the operating frequency of current Half Speed steam turbine.
10. nuclear power station Half Speed steam turbine primary frequency modulation control system according to claim 8, it is characterized in that: dead band excision control module (300) comprises dead band excision signal generation unit (310) for generating primary frequency modulation dead band switching signal, to excise the excision switch (320) that signal is connected with described dead band, the input of described excision switch (320) is connected with described primary frequency modulation dead band module (200) with described frequency computation part module (100) respectively, and output is connected with described frequency modulation processing module (400).
11. nuclear power station Half Speed steam turbine primary frequency modulation control system according to claim 10, is characterized in that: described dead band excision signal generation unit (310) the manual excision signal comprised for generating manually excision signal generates subelement (311) and the non-grid-connected order of the unit for generating the non-grid-connected order of unit generates subelement (312).
12. nuclear power station Half Speed steam turbine primary frequency modulation control system according to claim 8, is characterized in that: described frequency modulation processing module (400) comprising gradient generation unit (410) for generating synchronous gradient, excising the divider (420) that control module (300) is connected with described gradient generation unit (410) and the height limiting unit (430) for generating height limits value scope be connected with described divider (420) with described dead band; Described divider (420), for described operating frequency or process frequency are carried out division process with the synchronous gradient preset, obtains initial primary frequency modulation and exports; Described height limiting unit (430) processes with described height limits value scope for being exported by described initial primary frequency modulation, output frequency contribution margin.
13. nuclear power station Half Speed steam turbine primary frequency modulation control system according to claim 8, it is characterized in that: also comprise be connected with described working control module (500) respectively for generating the rotating speed control command generation unit (510) of rotating speed control command and the load control order generation unit (520) for generating load control order, described working control module (500) is to described frequency contributions value, described rotating speed control command and load control order process, export described rotary speed measure value and load measurement value, and export described rotary speed measure value to described frequency computation part module (100).
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| CN113312745A (en) * | 2021-04-13 | 2021-08-27 | 国网西藏电力有限公司经济技术研究院 | Static load electromagnetic transient modeling circuit and modeling simulation method of controlled voltage source |
| CN113312745B (en) * | 2021-04-13 | 2022-08-30 | 国网西藏电力有限公司经济技术研究院 | Static load electromagnetic transient modeling circuit and modeling simulation method of controlled voltage source |
| CN113675896A (en) * | 2021-08-17 | 2021-11-19 | 华能山东石岛湾核电有限公司 | Method and device for adjusting power transmission power of 'machine-following-pile' mode power grid |
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