CN111668857B - Method and system for primary frequency modulation of hydropower station generator monitoring system - Google Patents
Method and system for primary frequency modulation of hydropower station generator monitoring system Download PDFInfo
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- CN111668857B CN111668857B CN202010367062.1A CN202010367062A CN111668857B CN 111668857 B CN111668857 B CN 111668857B CN 202010367062 A CN202010367062 A CN 202010367062A CN 111668857 B CN111668857 B CN 111668857B
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- 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
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- 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
- H02J3/48—Controlling the sharing of the in-phase component
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Abstract
The invention discloses a method and a system for primary frequency modulation of a hydropower station generator monitoring system, and belongs to the technical field of power systems. The method comprises the following steps: acquiring a frequency calculation value used by primary frequency modulation; acquiring frequency deviation of primary frequency modulation; removing dead zones and amplitude limiting processing are carried out on the frequency deviation to obtain a frequency deviation signal, and primary frequency modulation power is obtained according to the frequency deviation signal; acquiring a primary frequency modulation integral power speed limit named value; acquiring a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value; and carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component. The invention mathematically superposes the primary frequency modulation power and other power instructions, so that the actual power can be tracked in the primary frequency modulation action process, the primary frequency modulation effect is not influenced, the primary frequency modulation and AGC coordination are realized, and the support capability of the unit on the system frequency and power is effectively exerted.
Description
Technical Field
The present invention relates to the field of power system technology, and more particularly, to a method and system for primary frequency modulation of a hydroelectric generator monitoring system.
Background
The existing unit monitoring system has no frequency regulation function under the realization mode of considering AGC and power regulation, and limits the primary frequency regulation capability of the unit under the closed-loop regulation of the monitoring system power, so that the regulation characteristic is not coordinated with the primary frequency regulation function of the unit speed regulation system.
The monitoring system is used for bearing the AGC load adjusting function, the adjusting capacity under complex conditions such as primary frequency modulation and AGC continuous simultaneous action need to be considered, and the function design and positioning are not perfect. In addition, the related network functions, parameter configuration and test detection of the monitoring system are not systematic. With the operation of 750kV and 1000kV voltage class power generation-transmission-transformation systems, the cross-provincial and cross-district alternating current interconnected power grid is continuously enhanced, the power system in China gradually enters a new period of large power grid, large unit and high voltage, the disturbance resistance of the power system is enhanced, and the support capability of the generator unit on the frequency of the power system is improved, so that the research of a hydropower station generator set computer monitoring system power regulation model considering frequency regulation is of great importance.
Disclosure of Invention
The invention provides a method for primary frequency modulation of a hydropower station generator monitoring system, aiming at the problems, which comprises the following steps:
the control monitoring system measures the frequency of the voltage of the stator of the generator, filters the frequency of the voltage of the stator of the generator and obtains a frequency calculation value used by primary frequency modulation;
acquiring the frequency deviation of primary frequency modulation according to the rated frequency and the calculated frequency value of the generator of the hydropower station;
removing dead zones and amplitude limiting processing are carried out on the frequency deviation to obtain a frequency deviation signal, and primary frequency modulation power is obtained according to the frequency deviation signal;
acquiring a famous primary frequency modulation power value according to the primary frequency modulation power and the rated active power of the hydropower station generator set, and performing rate limiting processing on the famous primary frequency modulation power value to acquire a famous primary frequency modulation power speed limit value;
acquiring a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value;
and carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component.
Optionally, primary frequency modulation is performed on the hydropower station generator monitoring system in a mode of input and exit, where the input and exit include:
indicating the operation to be put in and taken out according to the command;
or, setting a threshold value of the input or exit power, and performing input and exit when the running power is greater than the threshold value.
Optionally, the method further includes: locking the primary frequency modulation;
and locking is carried out according to the vibration interval or after a fault signal is received.
Optionally, the fault signal includes: frequency measurement fault signals, power measurement fault signals and speed regulation system fault signals.
Optionally, when the monitoring system is in a power closed loop, the monitoring system is put into or taken out according to an adjustment instruction of the monitoring system.
The invention also provides a system for primary frequency modulation of a hydropower station generator monitoring system, which comprises:
the acquisition unit is used for controlling the monitoring system to measure the frequency of the voltage of the stator of the generator, filtering the frequency of the voltage of the stator of the generator and acquiring a frequency calculation value used by primary frequency modulation;
the first parameter acquisition unit is used for acquiring the frequency deviation of primary frequency modulation according to the rated frequency and the calculated frequency value of the hydropower station generator;
the second parameter acquisition unit is used for removing dead zones and limiting amplitude of the frequency deviation to acquire a frequency deviation signal and acquiring primary frequency modulation power according to the frequency deviation signal;
the third parameter obtaining unit is used for obtaining a named value of primary frequency modulation integral power according to the primary frequency modulation power and rated active power of a hydropower station generator set, carrying out rate limiting processing on the named value of the primary frequency modulation power and obtaining a named value of primary frequency modulation integral power speed limit;
the fourth parameter acquisition unit acquires a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value;
and the frequency modulation unit is used for carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component.
Optionally, primary frequency modulation is performed on the hydropower station generator monitoring system in a mode of input and exit, where the input and exit include:
indicating the operation to be put in and taken out according to the command;
or, setting a threshold value of the input or exit power, and performing input and exit when the running power is greater than the threshold value.
Optionally, the frequency modulation unit is further configured to: locking the primary frequency modulation;
and locking is carried out according to the vibration interval or after a fault signal is received.
Optionally, the fault signal includes: frequency measurement fault signals, power measurement fault signals and speed regulation system fault signals.
Optionally, when the monitoring system is in a power closed loop, the monitoring system is put into or taken out according to an adjustment instruction of the monitoring system.
The invention mathematically superposes the primary frequency modulation power and other power instructions, so that the actual power can be tracked in the primary frequency modulation action process, the primary frequency modulation effect is not influenced, the primary frequency modulation and AGC coordination are realized, and the support capability of the unit on the system frequency and power is effectively exerted.
Drawings
FIG. 1 is a flow chart of a method of primary frequency modulation for a hydroelectric power plant generator monitoring system according to the present invention;
FIG. 2 is a diagram of a primary frequency modulation model of an embodiment of a method of the present invention for primary frequency modulation of a hydroelectric power plant generator monitoring system;
FIG. 3 is a diagram of a monitoring system model superimposed on an AGC (automatic gain control) setting and a local operation setting according to an embodiment of the method for primary frequency modulation of a hydropower station generator monitoring system of the invention;
FIG. 4 is a diagram of a monitoring system model under non-superposition of an AGC given and a local operation given according to an embodiment of the method for primary frequency modulation of a hydropower station generator monitoring system of the invention;
fig. 5 is a system block diagram of a primary frequency modulation for a hydroelectric power plant generator monitoring system according to the present invention.
Detailed Description
Example embodiments of the present invention will now be described with reference to the accompanying drawings, however, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are provided for a complete and complete disclosure of the invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides a method for primary frequency modulation of a hydropower station generator monitoring system, which comprises the following steps as shown in figure 1:
the control monitoring system measures the frequency of the voltage of the stator of the generator, filters the frequency of the voltage of the stator of the generator and obtains a frequency calculation value used by primary frequency modulation;
acquiring the frequency deviation of primary frequency modulation according to the rated frequency and the calculated frequency value of the generator of the hydropower station;
removing dead zones and amplitude limiting processing are carried out on the frequency deviation to obtain a frequency deviation signal, and primary frequency modulation power is obtained according to the frequency deviation signal;
acquiring a famous primary frequency modulation power value according to the primary frequency modulation power and the rated active power of the hydropower station generator set, and performing rate limiting processing on the famous primary frequency modulation power value to acquire a famous primary frequency modulation power speed limit value;
acquiring a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value;
and carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component.
The primary frequency modulation is carried out on the hydropower station generator monitoring system in a mode of switching in and switching out, and the switching in and the switching out comprise the following steps:
indicating the operation to be put in and taken out according to the command;
or, setting a threshold value of the input or exit power, and performing input and exit when the running power is greater than the threshold value.
Locking the primary frequency modulation;
and locking is carried out according to the vibration interval or after a fault signal is received.
A fault signal comprising: frequency measurement fault signals, power measurement fault signals and speed regulation system fault signals.
And when the monitoring system is in a power closed loop, switching in or switching out according to the regulating instruction of the monitoring system.
The invention is further illustrated by the following examples:
determining a primary frequency modulation model, as shown in fig. 2, the model comprising: delay time t for frequency measurement5Frequency measurement time constant TR5Frequency measurement filtering, a frequency deviation dead zone link DB2, a frequency deviation amplitude limiting link MAX1 and MIN1, a power difference adjustment correction link 1/ep, a generator set rated active power P0, a speed limiting link and a primary frequency modulation power amplitude limiting link;
the monitoring system measures the frequency of the generator stator voltage, and the frequency is filtered to obtain f for primary frequency modulation calculationgUsing the rated frequency f of the power grid on the upper computer or Local Control Unit (LCU) of the unit monitoring system0And fgCalculating deviation to obtain primary frequency modulation frequency deviation ferr0，ferr0Subtracting the dead zone DB, and obtaining an effective frequency deviation signal f after frequency amplitude limitingerr1，ferr1Dividing the power difference with the power difference rate to obtain primary frequency modulation adjustment power PPFR0The signal is a per unit value, PPFR0Rated active power P of generator set0Multiplication is carried out to obtain the first-order frequency modulation adjustment power nominal value PPFRMW0，PPFRMW0After rate limiting, P is obtainedPFRMW1Finally, a final primary frequency modulation power compensation component delta P of the monitoring system is formed through a primary frequency modulation power amplitude limiting linkJ-PFR。
When the generator frequency is higher than the rated frequency f0When the frequency deviation exceeds the set frequency deviation dead zone DB, a negative effective frequency difference occurs, the value is subjected to the difference rate calculation to obtain negative primary frequency modulation power, when the adjustment is implemented, the electrical power of the generator set can be adjusted downwards to realize the primary frequency modulation of the generator set, and vice versa.
The monitoring system inputs and exits the primary frequency modulation function:
the first method is that manual input and exit are realized on a program interface and a software interface according to manual instructions;
the second method is that an automatic input power threshold value and an exit power threshold value are set to realize automatic input and exit, namely, the generator set is in grid-connected operation, active power is greater than or equal to the automatic input power threshold value, the generator set is automatically input, and the generator set is automatically exited when the active power is less than the exit input power threshold value; the third is to carry on the automatic input according to the external signal, the external signal is the primary frequency modulation actuating signal of the speed governing system, and when the primary frequency modulation actuating signal of the speed governing system enables, the monitoring system puts into the primary frequency modulation automatically, otherwise when the primary frequency modulation actuating signal of the speed governing system returns, the monitoring system withdraws from the primary frequency modulation automatically.
Locking primary frequency modulation:
the first is that the unit can automatically lock primary frequency modulation according to a set vibration interval, namely, when the active power under the unit operation condition falls in the vibration interval, the primary frequency modulation is output, when the active power under the unit operation condition is at the upper limit of the vibration area, the primary frequency modulation in the negative direction is output, and when the active power under the unit operation condition is at the lower limit of the vibration area, the primary frequency modulation in the positive direction is output;
a second for latching in response to a fault signal, the fault signal comprising: frequency measurement faults, power measurement faults, and speed regulation system faults.
The power closed loop adjustment of the monitoring system, the monitoring system model is mainly made up of two parts, including:
1) a power closed loop section;
2) a pulse generating section;
as shown in fig. 3 and 4, the power closed loop section includes: the AGC power given value PAGC is a signal which reflects the AGC power given value distributed by a secondary frequency modulation system of a power station or a power grid received by the generator set, and the secondary frequency modulation function of generating power by the generator set is realized; artificial power given value P1The value is a unit active power reference value manually set by an operator in the unit operation process and is used for manually changing the generating active power of the unit and the active power P of the unitEThe value is a feedback value of the electric power of the generator set, and the expression is the active power generated by the actual generator set; t is t1、t2、t3、t4And t5Is a delay time, which means a lag or pure delay generated in measurement or calculation; epsilon is a natural logarithm; t isR1、TR2、TR3、TR4And TR5S is a laplace operator for measuring the time constant; pAGC-REFAnd P1' is an intermediate variable calculated in the model corresponding to a given value; pJ-PFRPrimary frequency modulation power is monitored; j1 is selected when the speed regulating system is put into an opening degree mode, J2 is selected when the speed regulating system is put into a power mode, and R1 represents that a signal is sent to a power given value reference point of power closed-loop regulation of the speed regulating system; + DB1, + DB2 and-DB 1, -DB2 are respectively expressed as positive dead zone and negative dead zone, KP1Is a power closed loop scaling factor.
The pulse generating section includes: and the power regulation pulse width waveform PMW generator is used for receiving a power regulator command to generate a load increasing and decreasing pulse and forming a given increasing and decreasing signal for controlling the opening of the guide vane. Y ismcMAXAnd YmcMINThe maximum value and the minimum value of the amplitude limit are respectively, the increasing and decreasing pulse is automatically switched, if the input deviation is integral, the increasing pulse is automatically switched, if the input deviation is negative, the decreasing pulse is automatically selected, and the increasing and decreasing pulse signals are sent to a related link of closed-loop regulation of the opening of the speed regulation system to form a given reference value Y of the openingrefThis value is a guide vane opening command and is a target value for opening or closing the guide vanes.
Primary frequency modulation and power closed-loop regulation, the specific regulation process is as follows:
primary frequency modulation model As shown in FIG. 2, given power P1AGC power given value variable quantity delta PAGC-REFAnd (4) superposition, namely when the switch is connected to a point J2, namely the unit is in a grid-connected stable operation interval, and the electric power P of the generatorEAnd (5) selecting a power mode to carry out a unit operation regulation mode under the stable operation working condition. When the switch is connected to a J1 point, the speed regulating system is put into an opening mode to regulate the operation of the unit and is used for maintaining the opening Y of the guide vane of the water turbine to an opening given value YrefAt this point, the monitoring system operator gives the power P1AGC power given value variable quantity delta PAGC-REFSuperposed value and primary frequency modulation power compensation component delta P of monitoring systemJ-PFROverlapping, and performing amplitude limiting link to obtain power P of generatorESubtracting the given power values to form active power deviation, forming a rotating speed or frequency deviation signal of actual operation after passing through a dead zone link and an amplitude limiting link, outputting the rotating speed or frequency deviation signal as one of input signals of an integral link of a PID (proportion integration differentiation) link, forming a given instruction Y regulated by a hydraulic system after passing through PID operation, external instruction superposition, amplitude limiting and other link operationsPID。
As shown in FIG. 3, the given power P1 is varied from the AGC power set point by an amount Δ PAGC-REFAnd selective access, namely, independently accessing the P1 when the unit does not need the secondary frequency modulation function, and otherwise, selectively accessing the AGC power when the secondary frequency modulation function is needed. When the switch is connected to a point J2, namely the unit is in a grid-connected stable operation interval, the electric power P of the generatorEAnd (5) selecting a power mode to carry out a unit operation regulation mode under the stable operation working condition. When the switch is connected to the point J1, the speed regulating system is put into an opening modeAdjusting running of the running set, and maintaining the opening Y of the guide vane of the water turbine to a given opening value YrefAt this time, the monitoring system operator gives a power P1(or AGC power setpoint variation Δ PAGC-REF) Primary frequency modulation power compensation component delta P of monitoring systemJ-PFROverlapping, and performing amplitude limiting link to obtain power P of generatorESubtracting the given power values to form active power deviation, forming a rotating speed or frequency deviation signal of actual operation after passing through a dead zone link and an amplitude limiting link, outputting the rotating speed or frequency deviation signal as one of input signals of an integral link of a PID (proportion integration differentiation) link, forming a given instruction Y regulated by a hydraulic system after passing through PID operation, external instruction superposition, amplitude limiting and other link operationsPID。
The monitoring system adjusts the input and the exit of the output in a closed power loop;
first according to P1And PAGCThe command input is automatically delayed to exit according to the power given and the power feedback deviation, namely when a new P is received1Instruction or PAGCWhen the instruction is given, the closed-loop regulation of power is automatically carried out, the monitoring system is opened to regulate output, and when the deviation between given power and feedback power lasts for Tout1The time is less than or equal to the set threshold value Pout1Automatically quitting and locking the output of the monitoring system;
the second method is to automatically switch on and off according to the threshold value of the deviation between the power setting and the power feedback, namely when the deviation between the power setting and the power feedback lasts for Tin1The time is greater than or equal to the set threshold value Pin1Automatically putting power into closed-loop regulation, opening a monitoring system to regulate output, and continuously keeping the deviation between given power and feedback power by Tou2The time is greater than or equal to the set threshold value Pout2The power is automatically switched into closed loop regulation.
The present invention also proposes a system 200 for primary frequency modulation of a hydroelectric power plant generator monitoring system, as shown in fig. 5, comprising:
the acquisition unit 201 is used for controlling the monitoring system to measure the frequency of the voltage of the generator stator, filtering the frequency of the voltage of the generator stator and acquiring a frequency calculation value used by primary frequency modulation;
the first parameter acquisition unit 202 is used for acquiring the frequency deviation of primary frequency modulation according to the rated frequency and the frequency calculation value of the hydropower station generator;
a second parameter obtaining unit 203, which removes dead zones and limits the frequency deviation to obtain a frequency deviation signal, and obtains a primary frequency modulation power according to the frequency deviation signal;
the third parameter obtaining unit 204 is used for obtaining a nominal value of the primary frequency modulation integral power according to the primary frequency modulation power and the rated active power of the hydropower station generator set, carrying out rate limiting processing on the nominal value of the primary frequency modulation power and obtaining a nominal value of the primary frequency modulation integral power rate limit;
a fourth parameter obtaining unit 205, obtaining a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value;
and the frequency modulation unit 206 is used for carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component.
Wherein, carry out primary control to power station generator monitored control system, go on through the mode of input and withdraw from, include:
indicating the operation to be put in and taken out according to the command;
or, setting a threshold value of the input or exit power, and performing input and exit when the operation power is greater than the threshold value.
Frequency modulation unit 206 is further configured to: locking the primary frequency modulation;
and locking is carried out according to the vibration interval or after a fault signal is received.
A fault signal comprising: frequency measurement fault signals, power measurement fault signals and speed regulation system fault signals.
And when the monitoring system is in a power closed loop, the monitoring system is put into or withdrawn according to the regulating instruction of the monitoring system.
The invention mathematically superposes the primary frequency modulation power and other power instructions, so that the actual power can be tracked in the primary frequency modulation action process, the primary frequency modulation effect is not influenced, the primary frequency modulation and AGC coordination are realized, and the support capability of the unit on the system frequency and power is effectively exerted.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method for primary frequency modulation of a hydroelectric power plant generator monitoring system, the method comprising:
the control monitoring system measures the frequency of the voltage of the generator stator, and filters the frequency of the voltage of the generator stator to obtain a frequency calculation value used by primary frequency modulation;
acquiring the frequency deviation of primary frequency modulation according to the rated frequency and the calculated frequency value of the generator of the hydropower station;
removing dead zones and amplitude limiting processing are carried out on the frequency deviation to obtain a frequency deviation signal, and primary frequency modulation power is obtained according to the frequency deviation signal;
acquiring a famous primary frequency modulation power value according to the primary frequency modulation power and the rated active power of the hydropower station generator set, and performing rate limiting processing on the famous primary frequency modulation power value to acquire a famous primary frequency modulation power speed limit value;
acquiring a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value;
and carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component.
2. The method of claim 1, wherein said primary tuning of the hydroelectric generator monitoring system is performed by means of a commissioning and a decommissioning, comprising:
indicating the operation to be put in and taken out according to the command;
or, setting a threshold value of the input or exit power, and performing input and exit when the running power is greater than the threshold value.
3. The method of claim 1, further comprising: locking the primary frequency modulation;
and locking is carried out according to the vibration interval or after a fault signal is received.
4. The method of claim 3, the fault signal, comprising: frequency measurement fault signals, power measurement fault signals and speed regulation system fault signals.
5. The method of claim 1, wherein the monitoring system is engaged or disengaged in response to a monitoring system adjustment command while the monitoring system is in a closed power loop.
6. A system for primary frequency modulation of a hydroelectric power plant generator monitoring system, the system comprising:
the acquisition unit is used for controlling the monitoring system to measure the frequency of the voltage of the stator of the generator, filtering the frequency of the voltage of the stator of the generator and acquiring a frequency calculation value used by primary frequency modulation;
the first parameter acquisition unit is used for acquiring the frequency deviation of primary frequency modulation according to the rated frequency and the calculated frequency value of the hydropower station generator;
the second parameter acquisition unit is used for removing dead zones and limiting amplitude of the frequency deviation to acquire a frequency deviation signal and acquiring primary frequency modulation power according to the frequency deviation signal;
the third parameter acquisition unit is used for acquiring a nominal value of the primary frequency modulation integral power according to the primary frequency modulation power and the rated active power of the hydropower station generator set, and performing rate limiting processing on the nominal value of the primary frequency modulation power to acquire a nominal value of the primary frequency modulation integral power rate limit;
the fourth parameter acquisition unit acquires a primary frequency modulation power compensation component according to the primary frequency modulation integral power speed limit named value;
and the frequency modulation unit is used for carrying out primary frequency modulation on the hydropower station generator monitoring system through the primary frequency modulation power compensation component.
7. The system of claim 6, wherein the primary frequency modulation of the hydroelectric power plant generator monitoring system is performed by a commissioning and a decommissioning comprising:
indicating the operation to be put in and taken out according to the command;
or, setting a threshold value of the input or exit power, and performing input and exit when the running power is greater than the threshold value.
8. The system of claim 6, the frequency modulation unit further to: locking the primary frequency modulation;
and the locking is carried out according to the vibration interval or after a fault signal is received.
9. The system of claim 8, the fault signal, comprising: frequency measurement fault signals, power measurement fault signals and speed regulation system fault signals.
10. The system of claim 6, wherein the monitoring system is configured to engage or disengage in response to a monitoring system adjustment command when the monitoring system is in a closed power loop.
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