CN111694338B - Energy storage and power utilization side primary frequency modulation static test system and test analysis method - Google Patents
Energy storage and power utilization side primary frequency modulation static test system and test analysis method Download PDFInfo
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- CN111694338B CN111694338B CN202010401354.2A CN202010401354A CN111694338B CN 111694338 B CN111694338 B CN 111694338B CN 202010401354 A CN202010401354 A CN 202010401354A CN 111694338 B CN111694338 B CN 111694338B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The invention discloses a primary frequency modulation static test system and a test analysis method for an energy storage power utilization side, which comprise a wave recorder (1), wherein the wave recorder (1) is respectively connected with output signals of a signal generator (2) and output signal ends of a power controller (5); the signal generator (2) is connected with the frequency signal acquisition card (3); the frequency signal acquisition card (3) is connected with the primary frequency modulation functional module (4); the primary frequency modulation functional module (4) is connected with the power controller (5); the power controller (5) outputs signals to control the power of the motor, and the air compressor (6) is connected with the motor (7) through a transmission shaft; carrying out a dead zone test, a rotating speed unequal rate test, a power limit amplitude test, a system response time and an action time test; the primary frequency modulation function test of the compressed air energy storage and power consumption system is realized before starting, the frequency control level and the power quality of the whole power grid are improved, and the safety and the stability of the power grid operation are ensured.
Description
Technical Field
The invention belongs to the technical field of energy storage, and particularly relates to a static test system and a test analysis method for primary frequency modulation of an energy storage power utilization side.
Background
The primary frequency modulation function of the generator set enables the generator set to respond to the change of the power and the frequency of a power grid at any time, improves the frequency control level and the electric energy quality of the whole power generation and supply system, and ensures the safety and the stability of the operation of the whole power generation and supply system.
The compressed air energy storage system has the advantages of large energy storage capacity, small pollution, rotational inertia, long service life and the like, can respectively realize power generation and energy release and power utilization energy storage through the expansion generator and the electric compressor, can bidirectionally support peak-load and frequency modulation of a power grid, and ensures that the primary frequency modulation of the compressed air energy storage system acts correctly according to the regulation, thereby being an important technical means for strongly supporting the peak-load and frequency modulation of the power grid. Therefore, before the electric compressor system is started, the control strategy and parameters of the primary frequency modulation related function module need to be statically tested to judge whether the control strategy and parameters are correct or not, and a basic guarantee effect is provided for stable operation of a power grid; the prior art does not aim at the primary frequency modulation of the compressed air energy storage system to carry out static test.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the control strategy and parameters of the primary frequency modulation related function module are tested through a static test before the unit is started, whether the control strategy and parameters are correct or not is judged, and a basic guarantee effect is provided for stable operation of a power grid.
The technical scheme of the invention is as follows:
a static test system of primary frequency modulation at the power utilization side of energy storage comprises: the wave recorder is respectively connected with the output signal end of the signal generator and the output signal end of the power controller; the signal generator is connected with the frequency signal acquisition card; the frequency signal acquisition card is connected with the primary frequency modulation functional module; the primary frequency modulation functional module is connected with the power controller; the power controller outputs signals to control the power of the motor, and the air compressor is connected with the motor through a transmission shaft.
The test analysis method of the primary frequency modulation static test system on the energy storage electricity side comprises a dead zone test, a rotating speed unequal rate test, a power limit amplitude test and a system response time and action time test of the primary frequency modulation on the compressed air energy storage electricity side.
Before testing, the signal generator simulates the frequency of a power grid to be 50 Hz.
The dead zone test method comprises the following steps: the signal generator outputs the frequency value of the dead zone range, records the output signal of the power controller, if not acting, the judgment is correct, and if acting, the judgment is incorrect; the signal generator outputs a frequency value exceeding the dead zone, the power controller outputs a signal, if the signal is operated, the signal is judged to be correct, and if the signal is not operated, the signal is judged to be incorrect.
The method for testing the rotating speed unequal rate comprises the following steps: the signal generator outputs frequency values exceeding the dead zone, and records output signals of the power controller according to the rising and falling stages of not less than 3 different frequency values respectively, and calculates whether the rotating speed unequal rate is correct or not.
The power limit amplitude test method comprises the following steps: the signal generator outputs a frequency value corresponding to the amplitude exceeding the upper limit of the power, records the output signal of the power controller, and calculates whether the upper limit of the power is correct or not; and recording the output signal of the power controller when the output power of the signal generator is a frequency value corresponding to zero, and judging whether the lower limit amplitude of the power is set to zero or not.
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.
The frequency values of the signal generator output dead zone ranges are 50.04Hz and 49.96 Hz; the frequency values of the signal generator output exceeding the dead zone are 50.06Hz and 49.94 Hz.
The invention has the beneficial effects that:
The invention provides a primary frequency modulation static test system and a test analysis method for an energy storage and power utilization side, which can test control strategies and parameters of primary frequency modulation related function modules through a static test before an electric compressor system is started, judge whether the control strategies and parameters are correct and play a basic guarantee role in stable operation of a power grid.
Drawings
FIG. 1 is a schematic view of the present invention.
Detailed Description
A primary frequency modulation static test system at an energy storage and power utilization side comprises a wave recorder 1, a signal generator 2, a frequency signal acquisition card 3, a primary frequency modulation functional module 4, a power controller 5, an air compressor 6 and a motor 7; the recorder 1 is connected with the output signal of the signal generator 2 and the output signal of the power controller 5, the signal generator 2, the frequency signal acquisition card 3 and the primary frequency modulation functional module 4 are sequentially connected with the power controller 5, the power controller 5 outputs a signal to control the power of the motor, and the air compressor 6 is connected with the motor 7 through a transmission shaft.
The test analysis method of the primary frequency modulation static test system on the energy storage and power utilization side comprises a dead zone test, a rotating speed unequal rate test, a power limiting amplitude test and a system response time and action time test of the primary frequency modulation on the energy storage and power utilization side of compressed air.
Before testing, the signal generator simulates the power grid frequency of 50 Hz.
The dead zone test method comprises the following steps: the signal generator outputs the frequency value of the dead zone range, records the output signal of the power controller, if not acting, the judgment is correct, and if acting, the judgment is incorrect; the signal generator outputs a frequency value exceeding the dead zone, the power controller outputs a signal, if the signal is operated, the signal is judged to be correct, and if the signal is not operated, the signal is judged to be incorrect.
The method for testing the rotating speed inequality rate comprises the following steps: the signal generator outputs frequency values exceeding the dead zone, and records output signals of the power controller according to the rising and falling stages of not less than 3 different frequency values respectively, and calculates whether the rotating speed unequal rate is correct or not.
The power limit amplitude test method comprises the following steps: the signal generator outputs a frequency value corresponding to the amplitude exceeding the upper limit of the power, records the output signal of the power controller, and calculates whether the upper limit of the power is correct or not; and recording the output signal of the power controller when the output power of the signal generator is a frequency value corresponding to zero, and judging whether the lower limit amplitude of the power is set to zero or not. The upper limit amplitude of the energy storage power is limited, and the influence of the power overrun of the motor on the safe operation is prevented; the lower limit amplitude of the power is set to be zero, the energy storage primary frequency modulation range is increased, and the frequency modulation capability of an energy storage system is improved.
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 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.
The frequency values of the signal generator output dead zone ranges are 50.04Hz and 49.96 Hz; the frequency values of the signal generator output exceeding the dead zone are 50.06Hz and 49.94 Hz. .
Example (b): a static test system and a test analysis method for primary frequency modulation of an electric side for energy storage can develop the following tests for primary frequency modulation of the electric side for energy storage of compressed air: 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 recorder adopts HDBH6500 type.
The signal generator adopts 33250A type arbitrary waveform generator.
The primary frequency modulation function module, the power controller, the frequency signal acquisition card and the power grid frequency signal measurement device are of a type matched with a prime motor main engine DCS.
The signal generator outputs frequency values close to the dead zone and exceeding the dead zone, for example, the dead zone is set to be +/-0.05 Hz, the rated frequency is 50Hz, the signal generator outputs 50.04Hz and 49.96Hz, and the signal output by the recording power controller is judged to be correct if no action is performed, and is judged to be incorrect if the action is performed. The signal generator outputs 50.06Hz and 49.94Hz, and the recording power controller outputs signals, if the action is judged to be correct, and if the action is not judged to be incorrect.
The signal generator outputs a frequency value exceeding a dead zone, the dead zone is set to be +/-0.05 Hz, the rated frequency is 50Hz, the rising stage is 50.06 Hz, 50.08 Hz and 50.1Hz, the falling stage is 49.94Hz, 49.92 Hz and 49Hz, the output signal of the power controller is recorded, and whether the rotating speed unequal rate is correct or not is calculated.
The signal generator outputs a frequency value corresponding to the amplitude of the upper power limit, e.g. the amplitude of the upper power limit isPCorresponding to a frequency value offAnd then inputting 99%fThe recording power controller outputting a signal, e.g. an exit signal, ofPJudging 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 value corresponding to zero output power of the signal generator, e.g. corresponding to a frequency value off’Then inputf’If the signal output by the recording power controller is 0, the lower limit amplitude of the power is judged to be correct, and if the signal output by the recording power controller is greater than 0, the lower limit amplitude of the power is judged to be incorrect.
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.
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. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A test analysis method of a primary frequency modulation static test system on an energy storage power utilization side comprises the following steps: the wave recorder (1), the wave recorder (1) is respectively connected with the output signal of the signal generator (2) and the output signal end of the power controller (5); the signal generator (2) is connected with the frequency signal acquisition card (3); the frequency signal acquisition card (3) is connected with the primary frequency modulation functional module (4); the primary frequency modulation functional module (4) is connected with the power controller (5); the power controller (5) outputs signals to control the power of the motor, and the air compressor (6) is connected with the motor (7) through a transmission shaft; the method is characterized in that: the test analysis method comprises a dead zone test of primary frequency modulation at the power utilization side of compressed air energy storage, a rotating speed unequal rate test, a power limit amplitude test, a system response time test and an action time test;
The dead zone test method comprises the following steps: the signal generator outputs the frequency value of the dead zone range, the recording power controller outputs signals, if the signals do not act, the signals are judged to be correct, and if the signals do not act, the signals are judged to be incorrect; the signal generator outputs a frequency value exceeding the dead zone, the power controller outputs a signal, if the signal is in action, the signal is judged to be correct, and if the signal is not in action, the signal is judged to be incorrect; the frequency values of the signal generator output dead zone ranges are 50.04Hz and 49.96 Hz; the frequency values of the signal generator output exceeding the dead zone are 50.06Hz and 49.94 Hz;
the power limit amplitude test method comprises the following steps: the signal generator outputs a frequency value corresponding to the amplitude exceeding the upper limit of the power, records the output signal of the power controller, and calculates whether the upper limit of the power is correct or not; and recording the output signal of the power controller when the output power of the signal generator is a frequency value corresponding to zero, and judging whether the lower limit amplitude of the power is set to zero or not.
2. The method for testing and analyzing the energy storage power utilization side primary frequency modulation static test system according to claim 1, characterized in that: before testing, the signal generator simulates the frequency of a power grid to be 50 Hz.
3. The method for testing and analyzing the energy storage power utilization side primary frequency modulation static test system according to claim 1, characterized in that: the method for testing the rotating speed inequality rate comprises the following steps: the signal generator outputs frequency values exceeding the dead zone, the output signals of the power controller are recorded according to the rising and falling stages of not less than 3 different frequency values respectively, and whether the rotating speed unequal rate is correct or not is calculated.
4. The method for testing and analyzing the energy storage power utilization side primary frequency modulation static test system according to claim 1, characterized in that: 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.
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