CN111537878B - Dynamic testing system and testing analysis method for primary frequency modulation of energy storage power generation side - Google Patents
Dynamic testing system and testing analysis method for primary frequency modulation of energy storage power generation side Download PDFInfo
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- CN111537878B CN111537878B CN202010401345.3A CN202010401345A CN111537878B CN 111537878 B CN111537878 B CN 111537878B CN 202010401345 A CN202010401345 A CN 202010401345A CN 111537878 B CN111537878 B CN 111537878B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
The invention discloses a primary frequency modulation dynamic test system and a test analysis method for an energy storage power generation side, which comprises a signal generator (1), a rotating speed acquisition card (2), a primary frequency modulation functional module (3), a power controller (4), an air inlet regulating valve (5) of a compressed air expansion power generation system, a rotating speed measuring device (6), an expander (7), a generator (8), a selector switch (9), a power measuring device (10) and a wave recorder (11); in the running process of the unit, a rotating speed signal is switched to a signal generator and then is transmitted to a rotating speed acquisition card through a selector switch, so that dead zone tests, rotating speed unequal rate tests, power limiting amplitude tests, system response time tests and action time tests can be carried out; the invention can dynamically realize the primary frequency modulation function test of the compressed air energy storage expansion power generation system during operation to analyze and check the compressed air energy storage expansion power generation system, improve the frequency control level and the electric energy quality of the whole power generation and supply system, and ensure the safety and the stability of the operation of the whole power generation and supply system.
Description
Technical Field
The invention belongs to the technical field of energy storage, and particularly relates to a dynamic testing system and a testing and analyzing method for primary frequency modulation of an energy storage power generation side.
Background
The primary frequency modulation of the power system is an adjustment mode for preventing the frequency of the system from deviating from a standard by utilizing the inherent load frequency characteristic of the system and the action of a speed regulator of a generator set, so that the generator set can respond to the change of power and frequency of a power grid side in real time, the frequency control level and the power quality of the whole power generation and supply system are improved, and the safety and the stability of the operation of the whole power generation and supply system are ensured.
The compressed air energy storage system can realize power generation and energy release and power utilization and energy storage, has the advantages of large energy storage capacity, small pollution, rotational inertia, long service life and the like, has a strong supporting effect on peak regulation and frequency modulation of a power grid, and is extremely important to stable operation of the power grid due to correct and timely response of primary frequency modulation; the prior art does not test the primary frequency modulation system at the energy storage and power generation side, and the accuracy of the primary frequency modulation system at the energy storage and power generation side cannot be mastered in real time.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides an energy storage power generation side primary frequency modulation dynamic test system and test analysis method to solve the technical problem that the prior art does not have the test to energy storage power generation side primary frequency modulation system, can not master the accuracy of energy storage power generation side primary frequency modulation system in real time, etc.
The technical scheme of the invention is as follows:
a primary frequency modulation dynamic test system on an energy storage power generation side comprises a primary frequency modulation functional module (3), wherein the primary frequency modulation functional module is connected with a rotating speed acquisition card; the rotating speed acquisition card is respectively connected with the rotating speed measuring device and the signal generator through the change-over switch; the power controller is connected with the primary frequency modulation function module, and outputs a control instruction through calculation, and the control instruction is connected to an air inlet regulating valve of the compressed air expansion power generation system; the air inlet regulating valve is connected with the expander through a pipeline, the generator is connected with the expander through a transmission shaft, and the generator works under the driving of the expander; the power measuring device measures the output power of the generator; the wave recorder is respectively connected with the power measuring device, the power controller and the signal generator. The change-over switch realizes uninterrupted seamless undisturbed change-over of signals in the change-over process.
The test analysis method of the primary frequency modulation dynamic test system on the energy storage power generation side comprises a dead zone test method, a rotating speed unequal rate test method, a power limit amplitude test method and a system response time and action time test method.
The dead zone test method comprises the following steps: the simulation rotating speed signal of the signal generator is ne, ne is the rated rotating speed of the prime motor, the change-over switch is switched to the signal generator to the rotating speed signal acquisition card, the signal generator outputs the frequency or rotating speed value in the dead zone, the signal of the generator power measuring device is recorded, if the signal does not act, the judgment is correct, and if the signal does act, the judgment is incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, and the generator power measuring device is recorded, if the generator power measuring device acts, the generator power measuring device is judged to be correct, and if the generator power measuring device does not act, the generator power measuring device is judged to be incorrect.
If the frequency or the rotating speed value is judged to be incorrect, the signal generator outputs the frequency or the rotating speed value within the dead zone range, the output signal of the power controller is recorded, if the frequency or the rotating speed value is not changed, the frequency or the rotating speed value is judged to be correct, and if the frequency or the rotating speed value is changed, the frequency or the rotating speed value is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, and records the output signal of the power controller, if the output signal is changed, the output signal is judged to be correct, and if the output signal is not changed, the output signal is judged to be incorrect; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
The method for testing the rotating speed inequality rate comprises the following steps: the simulation rotating speed signal of the signal generator is ne, ne is the rated rotating speed of the prime motor, and the change-over switch is switched to the signal generator to the rotating speed signal acquisition card; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, respectively outputs no less than 3 different frequencies or rotating speed values according to the ascending and descending stages, records a power measuring device signal of the power generator, and calculates whether the unequal rate of the rotating speed is correct or not; if the frequency or the rotating speed value is judged to be incorrect, the signal generator outputs the frequency or the rotating speed value within the dead zone range, the output signal of the power controller is recorded, if the frequency or the rotating speed value is not changed, the frequency or the rotating speed value is judged to be correct, and if the frequency or the rotating speed value is changed, the frequency or the rotating speed value is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
The power limit amplitude test method comprises the following steps: the simulation rotating speed signal of the signal generator is ne, ne is the rated rotating speed of the prime motor, and the change-over switch is switched to the signal generator to the rotating speed signal acquisition card; the signal generator outputs a frequency or rotating speed value corresponding to the amplitude exceeding the upper limit of the power, records a signal of the generator power measuring device, and calculates whether the amplitude of the upper limit of the power is correct or not; the output power of the signal generator is a frequency or rotating speed value corresponding to zero, a signal of the generator power measuring device is recorded, and whether the lower limit amplitude of the power is set to zero or not is judged; if not, the signal generator outputs a frequency or a rotating speed value within a dead zone range, and the signal generator records the output signal of the power controller, if not changed, the signal generator judges the signal to be correct, and if changed, the signal generator judges the signal to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
The system response time and action time testing method comprises the following steps: and calculating the response time and the action time of the system according to the recorded wave chart, and judging whether the requirements are met or not by taking the step time of the signal generator as a starting point, the time from the starting of power change as the response time of the system and the time from the stopping of power change as the action time of the system.
And after the test is finished, switching the change-over switch into a rotating speed measuring device to the rotating speed signal acquisition card.
The invention has the beneficial effects that:
the invention provides a dynamic test system and a test analysis method for primary frequency modulation at an energy storage and power generation side, which can test control strategies and parameters of a primary frequency modulation related function module through a dynamic test in the operation of a compressed air energy storage expansion generator set, judge whether the control strategies and parameters are correct and play a basic guarantee role in stable operation of a power grid; the technical problems that in the prior art, a primary frequency modulation system on the energy storage and power generation side is not tested, the accuracy of the primary frequency modulation system on the energy storage and power generation side cannot be mastered in real time and the like are solved.
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FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
A primary frequency modulation dynamic test system on an energy storage power generation side comprises a signal generator 1, a rotating speed acquisition card 2, a primary frequency modulation functional module 3, a power controller 4, an air inlet adjusting valve 5 of a compressed air expansion power generation system, a rotating speed measuring device 6, an expansion machine 7, a power generator 8, a change-over switch 9, a power measuring device 10 and a wave recorder 11. The wave recorder 11 is connected with the power measuring device 10, the power controller 4 and the signal generator 1. The rotating speed acquisition card 2 is respectively connected with the rotating speed measuring device 6 and the signal generator 1 through a change-over switch 9, the primary frequency modulation functional module 3 is connected with the rotating speed acquisition card 2, receives rotating speed signals and carries out primary frequency modulation calculation, the power controller 4 is connected with the primary frequency modulation functional module 3, and outputs a control instruction through calculation, and the instruction is connected to the air inlet regulating valve 5 of the compressed air expansion power generation system; the compressed air expansion power generation system comprises an air inlet regulating valve 5, a generator 8, an expansion machine 7, a transmission shaft, a power generation system and a power generation system, wherein the air inlet regulating valve 5 is connected with the expansion machine 7 through a pipeline; the power measuring device 10 measures the output power of the generator 8.
Under the control of the change-over switch, the rotating speed measuring device and the signal generator can be respectively connected to the rotating speed acquisition card, so that uninterrupted seamless undisturbed switching of signals in the switching process is realized, the normal and stable operation of the unit is ensured, and abnormal unit control caused by signal disturbance in the switching process is prevented.
The test analysis method can develop the following test of primary frequency modulation at the compressed air energy storage power generation side: the method comprises the following steps of dead zone testing, rotating speed unequal rate testing, power limit amplitude testing, system response time testing and action time testing.
The dead zone test method comprises the following steps: the signal generator simulates a rotating speed signal asn e ，n e Switching a selector switch into a signal generator to a rotating speed signal acquisition card for the rated rotating speed of a prime motor, outputting a frequency or rotating speed value in a dead zone by the signal generator, recording a signal of a power measuring device of the generator, judging the signal to be correct if the signal does not act, and judging the signal to be incorrect if the signal does act; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, and the generator power measuring device is recorded, if the generator power measuring device acts, the generator power measuring device is judged to be correct, and if the generator power measuring device does not act, the generator power measuring device is judged to be incorrect.
If the signal is judged to be incorrect, the signal generator outputs a frequency or a rotating speed value within a dead zone range, the signal is recorded and output by the power controller, if the signal is not changed, the signal is judged to be correct, and if the signal is changed, the signal is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
The method for testing the rotating speed inequality rate comprises the following steps: the signal generator simulates a rotating speed signal asn e ，n e Switching a change-over switch into a signal generator to a rotating speed signal acquisition card for the rated rotating speed of the prime motor; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, respectively outputs no less than 3 different frequencies or rotating speed values according to the ascending and descending stages, records a power measuring device signal of the power generator, and calculates whether the unequal rate of the rotating speed is correct or not; if the frequency or the rotating speed value is judged to be incorrect, the signal generator outputs the frequency or the rotating speed value within the dead zone range, the output signal of the power controller is recorded, if the frequency or the rotating speed value is not changed, the frequency or the rotating speed value is judged to be correct, and if the frequency or the rotating speed value is changed, the frequency or the rotating speed value is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; if it is correct, checking the work flow between the power controller and the generatorAnd (4) checking a workflow link between the signal generator and the power controller if the workflow link is incorrect.
The power limit amplitude test method comprises the following steps: the signal generator simulates a rotating speed signal asn e ，n e Switching a change-over switch into a signal generator to a rotating speed signal acquisition card for the rated rotating speed of the prime motor; the signal generator outputs a frequency or rotating speed value corresponding to the amplitude exceeding the upper limit of the power, records a signal of the generator power measuring device, and calculates whether the amplitude of the upper limit of the power is correct or not; the output power of the signal generator is a frequency or rotating speed value corresponding to zero, a signal of the generator power measuring device is recorded, and whether the lower limit amplitude of the power is set to zero or not is judged; if not, the signal generator outputs a frequency or a rotating speed value within the dead zone range, records the output signal of the power controller, if not changed, the signal is judged to be correct, and if changed, the signal is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
The system response time and action time testing method comprises the following steps: and calculating the response time and the action time of the system according to the recording chart, and judging whether the requirements are met.
And after the test is finished, switching the change-over switch into a rotating speed measuring device to the rotating speed signal acquisition card.
The change-over switch adopts an XC-U type seamless change-over switch.
The recorder adopts HDBH6500 type.
The signal generator adopts 33250A type arbitrary waveform generator.
The primary frequency modulation function module, the power controller, the compressed air expansion power generation system air inlet regulating valve, the rotating speed acquisition card, the rotating speed measuring device and the power measuring device are of a type matched with a prime motor main engine DCS.
The signal generator outputs a frequency (rotating speed) value close to the dead zone and exceeding the dead zone, for example, the dead zone is set to be +/-0.05 Hz (3 r/min), the rated frequency is 50Hz (3000 r/min), the signal generator outputs 50.04Hz (3002 r/min) and 49.96Hz (2998 r/min), and the signal of the generator power measuring device is recorded, if the signal is not operated, the judgment is correct, and if the signal is operated, the judgment is incorrect. The signal generator outputs 50.06Hz (3004 r/min) and 49.94Hz (2996 r/min), and records the signal of the generator power measuring device, if the action is judged to be correct, if the action is not judged to be incorrect.
If not, further checking is performed: the signal generator outputs 50.04Hz (3002 r/min) and 49.96Hz (2998 r/min), and the recording power controller outputs signals which are judged to be correct if not changed and are judged to be incorrect if changed. The signal generator outputs 50.06Hz (3004 r/min) and 49.94Hz (2996 r/min), and the recording power controller outputs signals, if the signals are changed, the signals are judged to be correct, and if the signals are not changed, the signals are judged to be incorrect. And if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
The signal generator outputs a frequency (rotating speed) value exceeding a dead zone, the dead zone is set to be +/-0.05 Hz (3 r/min), the rated frequency is 50Hz (3000 r/min), the rising stage is 50.06Hz (3004 r/min), 50.08 Hz (3005 r/min), 50.1Hz (3006 r/min), the falling stage is 49.94Hz (2996 r/min), 49.92 Hz (2995 r/min), 49Hz (2994 r/min), a signal of the power measuring device of the generator is recorded, and whether the rotating speed unequal rate is correct or not is calculated.
If not, further checking is performed: the signal generator outputs 50.06Hz (3004 r/min) in the rising stage and 49.94Hz (2996 r/min) in the falling stage, records the output signal of the power controller, if the output signal is correct, the workflow link from the power controller to the generator is checked, and if the output signal is incorrect, the workflow link from the signal generator to the power controller is checked.
The signal generator outputs a frequency (rotation speed) value corresponding to the amplitude exceeding the upper limit of power, such as the amplitude of the upper limit of powerPCorresponding to a frequency (rotational speed) value offAnd then input is 99%fRecording generator functionThe rate-measuring device signal, e.g. the exit signal, beingPJudging that the upper limit amplitude of the power is correct, if the outlet signal is greater thanPAnd judging that the upper limit amplitude of the power is incorrect. The frequency (speed) value corresponding to zero output power of the signal generator, e.g. corresponding to a frequency (speed) value off’Then inputf’And recording a signal of the generator power measuring device, judging that the lower limit amplitude of the power is correct if the outlet signal is 0, and judging that the lower limit amplitude of the power is incorrect if the outlet signal is greater than 0.
If not, further checking is carried out: the signal generator outputs a frequency (rotation speed) value corresponding to the amplitude exceeding the upper limit of power, such as the amplitude of the upper limit of powerPCorresponding to a frequency (rotational speed) value offAnd then input is 99%fThe output signal of the recording power controller, e.g. the exit signal, isPAnd if the upper limit amplitude of the power is judged to be correct, checking a workflow link from the power controller to the generator. If the exit signal is greater thanPAnd if the upper limit amplitude of the power is judged to be incorrect, checking a working flow link from the signal generator to the power controller. The frequency (speed) value corresponding to zero output power of the signal generator, e.g. corresponding to a frequency (speed) value off’Then inputf’And recording the output signal of the power controller, and if the outlet signal is 0, judging that the lower limit amplitude of the power is correct, checking a work flow link from the power controller to the generator. And if the outlet signal is larger than 0, judging that the lower limit amplitude of the power is incorrect, checking a workflow link from the signal generator to the power controller.
And calculating the response time and the action time of the system according to the recorded wave chart, and judging whether the requirements are met by taking the step time of the signal generator as a starting point, the time from the start of power change as the response time of the system and the time from the stop of power change as the action time of the system.
And after the test is finished, switching the change-over switch into a rotating speed measuring device to the rotating speed signal acquisition card.
The above description is only an example of the specific embodiments of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art can easily find variations or alternatives within the technical scope of the present disclosure, which should be covered by the protection scope of the present disclosure. For this reason, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A test analysis method of a primary frequency modulation dynamic test system on an energy storage power generation side comprises a primary frequency modulation functional module (3), and is characterized in that: the primary frequency modulation functional module (3) is connected with the rotating speed acquisition card (2); the rotating speed acquisition card (2) is respectively connected with the rotating speed measuring device (6) and the signal generator (1) through a switch (9); the power controller (4) is connected with the primary frequency modulation functional module (3), and outputs a control instruction through calculation, and the control instruction is accessed to an air inlet regulating valve (5) of the compressed air expansion power generation system; the air inlet regulating valve (5) is connected with the expander (7) through a pipeline, the generator (8) is connected with the expander (7) through a transmission shaft, and the generator works under the driving of the expander (7); the power measuring device (10) measures the output power of the generator (8); the wave recorder (11) is respectively connected with the power measuring device (10), the power controller (4) and the signal generator (1); the test analysis method comprises a dead zone test method, a rotating speed unequal rate test method, a power limit amplitude test method and a system response time and action time test method; the dead zone test method comprises the following steps: the signal generator simulates a rotating speed signal asn e ，n e Switching a change-over switch into a signal generator to a rotating speed signal acquisition card for the rated rotating speed of a prime motor, outputting the frequency or rotating speed value in a dead zone by the signal generator, recording a signal of the power measuring device of the generator, judging the signal to be correct if the signal does not act, and judging the signal to be incorrect if the signal does act; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, and records the generator power measuring device, if the generator power measuring device acts, the generator power measuring device judges the generator power measuring device to be correct, and if the generator power measuring device does not act, the generator power measuring device judges the generator power measuring device to be incorrect; if the frequency or the rotating speed value is judged to be incorrect, the signal generator outputs the frequency or the rotating speed value within the dead zone range, the output signal of the power controller is recorded, if the frequency or the rotating speed value is not changed, the frequency or the rotating speed value is judged to be correct, and if the frequency or the rotating speed value is changed, the frequency or the rotating speed value is judged to be incorrect; the signal generator outputs a frequency or rotational speed value that exceeds the deadband,recording the output signal of the power controller, if changing, judging as correct, if not changing, judging as incorrect; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
2. The method for testing and analyzing the primary frequency modulation dynamic test system on the energy storage and power generation side according to claim 1, wherein the method comprises the following steps: the change-over switch realizes that the rotating speed measuring device and the signal generator are respectively connected to the frequency signal acquisition card, and realizes uninterrupted seamless undisturbed switching of signals in the switching process.
3. The method for testing and analyzing the primary frequency modulation dynamic test system on the energy storage and power generation side according to claim 1, wherein the method comprises the following steps: the method for testing the rotating speed inequality rate comprises the following steps: the signal generator simulates a rotating speed signal asn e ，n e Switching a change-over switch into a signal generator to a rotating speed signal acquisition card for the rated rotating speed of the prime motor; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, respectively outputs not less than 3 different frequencies or rotating speed values according to the ascending and descending stages, records a signal of the power measuring device of the power generator, and calculates whether the unequal rate of the rotating speed is correct or not; if the frequency or the rotating speed value is judged to be incorrect, the signal generator outputs the frequency or the rotating speed value within the dead zone range, the output signal of the power controller is recorded, if the frequency or the rotating speed value is not changed, the frequency or the rotating speed value is judged to be correct, and if the frequency or the rotating speed value is changed, the frequency or the rotating speed value is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; and if the working process link between the power controller and the generator is correct, checking the working process link between the signal generator and the power controller.
4. The method for testing and analyzing the primary frequency modulation dynamic test system on the energy storage and power generation side according to claim 1, wherein the method comprises the following steps: the power limit amplitude test method comprises the following steps: will be provided withThe signal generator simulates a rotating speed signal ofn e ，n e Switching a change-over switch into a signal generator to a rotating speed signal acquisition card for the rated rotating speed of the prime motor; the signal generator outputs a frequency or rotating speed value corresponding to the amplitude exceeding the upper limit of the power, records a signal of the generator power measuring device, and calculates whether the amplitude of the upper limit of the power is correct or not; the output power of the signal generator is a frequency or rotating speed value corresponding to zero, a signal of the generator power measuring device is recorded, and whether the lower limit amplitude of the power is set to zero or not is judged; if not, the signal generator outputs a frequency or a rotating speed value within the dead zone range, records the output signal of the power controller, if not changed, the signal is judged to be correct, and if changed, the signal is judged to be incorrect; the signal generator outputs a frequency or a rotating speed value exceeding the dead zone, records the output signal of the power controller, judges the signal to be correct if the output signal changes, and judges the signal to be incorrect if the output signal does not change; and if the current signal is incorrect, checking the workflow link between the signal generator and the power controller.
5. The method for testing and analyzing the primary frequency modulation dynamic test system on the energy storage and power generation side according to claim 1, wherein the method comprises the following steps: the system response time and action time testing method comprises the following steps: and calculating the response time and the action time of the system according to the recorded wave chart, and judging whether the requirements are met or not by taking the step time of the signal generator as a starting point, the time from the starting of power change as the response time of the system and the time from the stopping of power change as the action time of the system.
6. The test analysis method of the energy storage power generation side primary frequency modulation dynamic test system according to claim 1, characterized in that: and after the test is finished, switching the change-over switch into a rotating speed measuring device to the rotating speed signal acquisition card.
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| CN101105520A (en) * | 2007-08-08 | 2008-01-16 | 陕西电力科学研究院 | Generating set primary frequency regulation test method and emulating instrument for test |
| CN103346619A (en) * | 2013-07-19 | 2013-10-09 | 国家电网公司 | Online monitoring and performance assessing method for primary frequency modulation of thermal generator set |
| CN205844492U (en) * | 2016-07-28 | 2016-12-28 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of hydro-generating Unit primary frequency modulation assay device |
| CN109038618A (en) * | 2018-08-10 | 2018-12-18 | 贵州电网有限责任公司 | A kind of method of compressed-air energy-storage system responsive electricity grid frequency modulation |
| CN110441541A (en) * | 2019-09-17 | 2019-11-12 | 贵州电网有限责任公司 | A kind of expansion power generator revolving speed static test system and test method |
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