CN113467331B - Method for analyzing influence of controller parameters on automatic power generation control regulation performance - Google Patents
Method for analyzing influence of controller parameters on automatic power generation control regulation performance Download PDFInfo
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- CN113467331B CN113467331B CN202110858133.2A CN202110858133A CN113467331B CN 113467331 B CN113467331 B CN 113467331B CN 202110858133 A CN202110858133 A CN 202110858133A CN 113467331 B CN113467331 B CN 113467331B
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Abstract
The invention relates to the technical field of automatic control, and discloses a method for analyzing the influence of controller parameters on the regulation performance of automatic power generation control, which is based on a coordination control structure of direct energy balance and the regulated controller parameters, so that a coordination control system responds to an automatic power generation control instruction and calculates the regulation rate, regulation precision and response time of a power loop in the process of responding to the automatic power generation control instruction; maintaining the parameters of the feedback and feedforward controllers of the main steam pressure loop unchanged, respectively increasing or decreasing the proportional gain and the integral gain in the feedback controller of the power loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain is increased or decreased in response to the same automatic power generation control command; the influence of the feedback of the main steam pressure loop and the feedforward controller parameters on the adjustment speed, the adjustment precision and the response time is completed. The method can analyze the influence of the controller parameters on the automatic power generation control regulation performance, and provide guidance for the optimization of the controller parameters.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a method for analyzing influence of controller parameters on automatic power generation control regulation performance.
Background
The thermal power generating unit is used for absorbing new energy which is integrated with a power grid in a large scale along with wind energy, photovoltaic and the like, the thermal power generating unit needs to absorb the large-scale new energy through fast responding to an automatic power generation control instruction, and in order to measure the effect of the unit in responding to the automatic power generation control process, the current domestic adjustment performance of the automatic power generation control is adopted for checking the unit participating in the automatic power generation control, and the adjustment performance of the automatic power generation control mainly comprises three indexes including adjustment speed, adjustment precision and response time, and the three indexes are definitely defined and calculated.
As an important control loop of the thermal power generating unit participating in automatic power generation control and regulation, the coordination control system based on the energy direct balance structure is the most widely applied control structure, and as the proportional-integral controller still takes the dominant role in the control of the thermal power generating unit, the comprehensive analysis of different proportional-integral controller parameters in the coordination control system of the energy direct balance structure has important significance on the influence on the automatic power generation control and regulation performance, and the controller parameters of the coordination control system can be reasonably optimized for improving the automatic power generation control and regulation performance.
Fuzzy logic control technology has been widely used in various industrial control systems as a mature control technology. The robustness and control performance of the closed-loop control system can be remarkably improved by the fuzzy logic control technology through online updating of the controller parameters. Studies have shown that the scaling factor of a fuzzy PID controller (proportional-integral-derivative controller) has a greater impact on the control performance of the grid automatic generation control system than other factors. The dynamic control performance of the automatic power generation control system of the power grid can be improved by adjusting the value of the scale factor, and the control target of the automatic power generation control system of the power grid cannot be ensured by the unsuitable scale factor. Therefore, it is necessary to propose a method for analyzing the influence of the controller parameters on the adjustment performance of the automatic power generation control system, so as to optimize the controller parameters of the automatic power generation control system of the power grid, so as to improve the dynamic control performance of the automatic power generation control system of the power grid.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for analyzing the influence of the controller parameters on the automatic power generation control regulation performance, which can analyze the influence of the power loop feedback controller parameters, the main steam pressure loop feedback and the feedforward controller parameters on the automatic power generation control regulation performance in a coordination control system of an energy direct balance structure and provide guidance for the optimization of the controller parameters in the coordination control system.
In order to achieve the purpose of the method for analyzing the influence of the controller parameters on the automatic power generation control regulation performance, the invention provides the following technical scheme: a method of analyzing the effect of controller parameters on the regulation performance of an automatic power generation control, the method comprising the steps of:
s1, based on a coordination control structure of direct energy balance and adjusted parameters of a feedback controller of a power loop, a feedback controller of a main steam pressure loop and a feedforward controller, enabling a coordination control system to respond to an automatic power generation control instruction, and calculating the adjustment rate, adjustment precision and response time of the power loop in the process of responding to the automatic power generation control instruction;
s2, respectively increasing or decreasing the proportional gain in the power loop feedback controller, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s3, respectively increasing or decreasing integral gain in the power loop feedback controller, and respectively calculating the adjusting speed, the adjusting precision and the response time of the power loop when the integral gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s4, analyzing the proportional gain and integral gain of a power loop feedback controller in the coordination control system, and increasing or reducing the influence on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process;
s5, respectively increasing or decreasing the proportional gain in the main steam pressure loop feedback controller, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain in the main steam pressure loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s6, respectively increasing or decreasing integral gain in the main steam pressure loop feedback controller, and respectively calculating the adjusting speed, the adjusting precision and the response time of the power loop when the integral gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s7, analyzing the proportional gain and integral gain of a feedback controller of a main steam pressure loop in the coordination control system, and increasing or reducing the influence on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process;
s8, respectively increasing or decreasing the proportional gain in the feedforward controller of the main steam pressure loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain in the feedforward controller of the main steam pressure loop is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s9, respectively increasing or decreasing differential gain in the feedforward controller of the main steam pressure loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the differential gain in the feedforward controller of the main steam pressure loop is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s10, analyzing the proportional gain and the differential gain of a feedforward controller of a main steam pressure loop in the coordinated control system, and increasing or reducing the influence on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process.
Preferably, the power loop feedback controller in step S1 includes a proportional gain and an integral gain, the main vapor pressure loop feedback controller includes a proportional gain and an integral gain, and the feedforward controller includes a proportional gain and a differential gain.
The power loop feedback controller includes a proportional gain and an integral gain, the main vapor pressure loop feedback controller includes a proportional gain and an integral gain, and the feedforward controller includes a proportional gain and a differential gain.
Preferably, the main vapor pressure loop feedback and feedforward controller parameters and the integral gain in the power loop feedback controller are maintained unchanged until the proportional gain in the power loop feedback controller is increased or decreased in step S2.
Preferably, the main vapor pressure loop feedback and feedforward controller parameters and the proportional gain in the power loop feedback controller are maintained unchanged until the integral gain in the power loop feedback controller is increased or decreased in step S3.
Preferably, the main vapor pressure loop feedforward controller parameter, the power loop feedback controller parameter, and the integral gain in the main vapor pressure loop feedback controller are maintained unchanged before the proportional gain in the main vapor pressure loop feedback controller is increased or decreased in step S5.
Preferably, the main vapor pressure loop feedforward controller parameter, the power loop feedback controller parameter, and the proportional gain in the main vapor pressure loop feedback controller are maintained unchanged until the integral gain in the main vapor pressure loop feedback controller is increased or decreased in step S6.
Preferably, the main vapor pressure loop feedback controller parameter, the power loop feedback controller parameter, and the differential gain in the main vapor pressure loop feedforward controller are maintained unchanged until the proportional gain in the main vapor pressure loop feedforward controller is increased or decreased in step S8.
Preferably, the main vapor pressure loop feedback controller parameter, the power loop feedback controller parameter, and the proportional gain in the main vapor pressure loop feedforward controller are maintained unchanged until the differential gain in the main vapor pressure loop feedforward controller is increased or decreased in step S9.
Compared with the prior art, the invention provides a method for analyzing the influence of the controller parameters on the automatic power generation control regulation performance, which has the following beneficial effects:
the method for analyzing the influence of the controller parameters on the regulation performance of the automatic power generation control is based on a coordination control structure of direct energy balance and the regulated controller parameters, so that a coordination control system responds to an automatic power generation control instruction, and the regulation rate, regulation precision and response time of a power loop in the process of responding to the automatic power generation control instruction are calculated; maintaining the parameters of the feedback and feedforward controllers of the main steam pressure loop unchanged, respectively increasing or decreasing the proportional gain and the integral gain in the feedback controller of the power loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain is increased or decreased in response to the same automatic power generation control command; analyzing the influence of parameter changes on the adjustment rate, the adjustment precision and the response time; the method can analyze the influence of the controller parameters on the adjustment performance of the automatic power generation control, and provide guidance for the optimization of the controller parameters.
Drawings
Fig. 1 is a flowchart of a method for analyzing an influence of a controller parameter on an adjustment performance of an automatic power generation control according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a method for analyzing the influence of controller parameters on the adjustment performance of automatic power generation control includes the following steps:
s1, based on a coordination control structure of direct energy balance and parameters of an adjusted power loop feedback controller (comprising proportional gain and integral gain), a main steam pressure loop feedback controller (comprising proportional gain and integral gain) and parameters of a feedforward controller (comprising proportional gain and differential gain), enabling a coordination control system to respond to an automatic power generation control instruction, and calculating adjustment rate, adjustment precision and response time of a power loop in the process of responding to the automatic power generation control instruction;
s2, keeping parameters of the main steam pressure loop feedback and feedforward controller and integral gain in the power loop feedback controller unchanged, respectively increasing or decreasing proportional gain in the power loop feedback controller, and respectively calculating the adjustment rate, adjustment precision and response time of the power loop when the proportional gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s3, keeping parameters of the main steam pressure loop feedback and feedforward controller and proportional gain in the power loop feedback controller unchanged, respectively increasing or decreasing integral gain in the power loop feedback controller, and respectively calculating the adjustment rate, adjustment precision and response time of the power loop when increasing or decreasing integral gain in the power loop feedback controller by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s4, analyzing the influence of the increase or decrease of the proportional gain and the integral gain of a power loop feedback controller in the coordination control system on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process;
s5, keeping the parameters of the feedforward controller, the feedback controller and the integral gain of the feedback controller of the main steam pressure loop unchanged, respectively increasing or decreasing the proportional gain of the feedback controller of the main steam pressure loop, and respectively calculating the adjusting speed, the adjusting precision and the response time of the power loop when increasing or decreasing the proportional gain of the feedback controller of the main steam pressure loop by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s6, keeping parameters of the feedforward controller of the main steam pressure loop, parameters of the feedback controller of the power loop and proportional gain in the feedback controller of the main steam pressure loop unchanged, respectively increasing or decreasing integral gain in the feedback controller of the main steam pressure loop, and respectively calculating the adjusting rate, adjusting precision and response time of the power loop when increasing or decreasing integral gain in the feedback controller of the power loop by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s7, analyzing the influence of the increase or decrease of the proportional gain and the integral gain of a feedback controller of a main steam pressure loop in the coordination control system on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process;
s8, keeping parameters of the feedback controller of the main steam pressure loop, parameters of the feedback controller of the power loop and differential gain in the feedforward controller of the main steam pressure loop unchanged, respectively increasing or decreasing proportional gain in the feedforward controller of the main steam pressure loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when increasing or decreasing the proportional gain in the feedforward controller of the main steam pressure loop by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s9, keeping parameters of the feedback controller of the main steam pressure loop, parameters of the feedback controller of the power loop and proportional gain in the feedforward controller of the main steam pressure loop unchanged, respectively increasing or decreasing differential gain in the feedforward controller of the main steam pressure loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when increasing or decreasing differential gain in the feedforward controller of the main steam pressure loop by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s10, analyzing the influence of the increase or decrease of the proportional gain and the differential gain of the feedforward controller of the main steam pressure loop in the coordinated control system on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process.
The working and using flow and the installing method of the invention are that when the method for analyzing the influence of the controller parameters on the automatic power generation control regulation performance is used, the coordination control system responds to the automatic power generation control instruction based on the coordination control structure of the direct energy balance and the regulated controller parameters, and the regulation rate, the regulation precision and the response time of the power loop in the process of responding to the automatic power generation control instruction are calculated; maintaining the parameters of the feedback and feedforward controllers of the main steam pressure loop unchanged, respectively increasing or decreasing the proportional gain and the integral gain in the feedback controller of the power loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain is increased or decreased in response to the same automatic power generation control command; analyzing the influence of parameter changes on the adjustment rate, the adjustment precision and the response time; the method can analyze the influence of the controller parameters on the adjustment performance of the automatic power generation control, and provide guidance for the optimization of the controller parameters.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for analyzing the influence of controller parameters on the regulation performance of automatic power generation control is characterized in that: the method comprises the following steps:
s1, based on a coordination control structure of direct energy balance and adjusted parameters of a feedback controller of a power loop, a feedback controller of a main steam pressure loop and a feedforward controller, enabling a coordination control system to respond to an automatic power generation control instruction, and calculating the adjustment rate, adjustment precision and response time of the power loop in the process of responding to the automatic power generation control instruction;
s2, respectively increasing or decreasing the proportional gain in the power loop feedback controller, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s3, respectively increasing or decreasing integral gain in the power loop feedback controller, and respectively calculating the adjusting speed, the adjusting precision and the response time of the power loop when the integral gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s4, analyzing the proportional gain and integral gain of a power loop feedback controller in the coordination control system, and increasing or reducing the influence on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process;
s5, respectively increasing or decreasing the proportional gain in the main steam pressure loop feedback controller, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain in the main steam pressure loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s6, respectively increasing or decreasing integral gain in the main steam pressure loop feedback controller, and respectively calculating the adjusting speed, the adjusting precision and the response time of the power loop when the integral gain in the power loop feedback controller is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s7, analyzing the proportional gain and integral gain of a feedback controller of a main steam pressure loop in the coordination control system, and increasing or reducing the influence on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process;
s8, respectively increasing or decreasing the proportional gain in the feedforward controller of the main steam pressure loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the proportional gain in the feedforward controller of the main steam pressure loop is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s9, respectively increasing or decreasing differential gain in the feedforward controller of the main steam pressure loop, and respectively calculating the adjustment rate, the adjustment precision and the response time of the power loop when the differential gain in the feedforward controller of the main steam pressure loop is increased or decreased by the coordination control system in response to the same automatic power generation control instruction in the step S1;
s10, analyzing the proportional gain and the differential gain of a feedforward controller of a main steam pressure loop in the coordinated control system, and increasing or reducing the influence on the adjusting speed, the adjusting precision and the response time in the automatic power generation control adjusting process.
2. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in claim 1, step S1, wherein: the power loop feedback controller includes a proportional gain and an integral gain, the main vapor pressure loop feedback controller includes a proportional gain and an integral gain, and the feedforward controller includes a proportional gain and a differential gain.
3. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in step S2 of claim 1, wherein: the main vapor pressure loop feedback and feedforward controller parameters are maintained before the proportional gain in the power loop feedback controller is increased or decreased, and the integral gain in the power loop feedback controller is unchanged.
4. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in claim 1, step S3, wherein: the main vapor pressure loop feedback and feedforward controller parameters are maintained unchanged prior to increasing or decreasing the integral gain in the power loop feedback controller.
5. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in step S5 of claim 1, wherein: the main vapor pressure loop feedforward controller parameter, the power loop feedback controller parameter, and the integral gain in the main vapor pressure loop feedback controller are maintained unchanged before the proportional gain in the main vapor pressure loop feedback controller is increased or decreased.
6. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in step S6 of claim 1, wherein: the main vapor pressure loop feedforward controller parameter, the power loop feedback controller parameter, and the proportional gain in the main vapor pressure loop feedback controller are maintained unchanged before the integral gain in the main vapor pressure loop feedback controller is increased or decreased.
7. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in claim 1, step S8, wherein: the main vapor pressure loop feedback controller parameter, the power loop feedback controller parameter, and the differential gain in the main vapor pressure loop feedforward controller are maintained unchanged before increasing or decreasing the proportional gain in the main vapor pressure loop feedforward controller.
8. A method of analyzing the effect of controller parameters on the regulation performance of automatic power generation control as set forth in claim 1, step S9, wherein: the main vapor pressure loop feedback controller parameter, the power loop feedback controller parameter, and the proportional gain in the main vapor pressure loop feedforward controller are maintained unchanged before increasing or decreasing the differential gain in the main vapor pressure loop feedforward controller.
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