CN115693684A - Power grid transient voltage stabilizing method, device, equipment and storage medium - Google Patents
Power grid transient voltage stabilizing method, device, equipment and storage medium Download PDFInfo
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Abstract
The application discloses a power grid transient voltage stabilization method, a device, equipment and a storage medium, wherein a to-be-changed tidal current circuit set of a weak area in a power grid is determined through all bus voltages related to the power grid circuit set; establishing an active sensitivity matrix between a target line and a power plant, wherein the target line is a line in a tidal current line set to be changed, and generating a transient voltage optimization constraint condition of a power grid based on the active sensitivity matrix; optimizing a target function constructed based on the active output variation of the power plant based on the transient voltage optimization constraint condition until the target function reaches the minimum value to obtain the target active output variation of the power plant; based on the target active power output variable quantity, the active power output of the power plant is adjusted to stabilize the transient voltage of the power grid, so that the active power flow on the weak area connecting line after voltage regulation is ensured to be more balanced, and the problem of transient voltage stability of the power grid is solved.
Description
Technical Field
The present application relates to the field of voltage control technologies, and in particular, to a method, an apparatus, a device, and a storage medium for stabilizing a transient voltage of a power grid.
Background
The transient voltage stability problem is one of core problems concerned by the actual operation of the power grid, and whether the dynamic non-function of the power grid realizes real-time balance determines whether the transient voltage of the power grid can be kept stable. Due to the fact that the lines flow too much active power in a steady state to cause line blocking in the transient state process, when the lines are blocked, dynamic reactive power needed by a transient voltage weak area cannot be met in time, and transient voltage fluctuation is shown. Therefore, in order to enable the line to have enough transmission capability in the transient process, so as to enable the active power of the line to be distributed more uniformly, and improve the transient voltage stability of the power grid, a method for stabilizing the transient voltage of the power grid is urgently needed.
Disclosure of Invention
The application provides a power grid transient voltage stabilizing method, a device, equipment and a storage medium, which are used for solving the technical problem of transient voltage fluctuation caused by the current line blockage phenomenon.
In order to solve the above technical problem, in a first aspect, the present application provides a method for stabilizing a transient voltage of a power grid, including:
determining a to-be-changed power flow line set of a weak area in a power grid based on all bus voltages related to the power grid line set;
establishing an active sensitivity matrix between a target line and the power plant, wherein the target line is a line in the tidal current line set to be changed;
generating transient voltage optimization constraint conditions of the power grid based on the active sensitivity matrix;
optimizing an objective function constructed based on the active output variation of the power plant based on transient voltage optimization constraint conditions until the objective function reaches the minimum value, and obtaining the target active output variation of the power plant;
and adjusting the active power output of the power plant based on the target active power output variable quantity so as to stabilize the transient voltage of the power grid.
In some implementations, the determining a set of power flow lines to be changed in a weak area in the power grid based on all bus voltages involved in the set of power grid lines includes:
counting the voltage out-of-limit times of each bus in the transient process based on the transient voltage waveforms of all buses related to the power grid line set;
and taking all lines connected with the bus with the maximum voltage out-of-limit times as the power flow line set to be changed.
In some implementations, the establishing an active sensitivity matrix between the target line and the power plant includes:
establishing an active sensitivity relationship between the target line and the power plant based on the active variation of the target line and the output adjustment of the power plant;
and establishing the active sensitivity matrix based on active sensitivity relations between all target lines in the set of the power flow lines to be changed and all power plants connected with the power grid.
In some implementations, the generating transient voltage optimization constraints for the grid based on the active sensitivity matrix includes:
obtaining an active variable target value of the target line, and an adjustable output change lower limit value and an adjustable output change upper limit value of the power plant;
generating an active equation constraint condition between a target line and a power plant based on the active change target value and the active sensitivity matrix;
and generating an active inequality constraint condition of the power plant based on the adjustable output change lower limit value and the adjustable output change upper limit value, wherein the transient voltage optimization constraint condition of the power grid comprises the active inequality constraint condition and the active inequality constraint condition.
In some implementations, the active equation constraint is expressed as:
wherein, the first and the second end of the pipe are connected with each other,
representing the target value of active variation of the mth target line, a i,m Representing the active sensitivity relationship, Δ P, between the ith power plant and the mth entry road marking Gi The output adjustment amount of the ith power plant is shown.
In some implementations, the active inequality constraint is expressed as:
wherein, Δ P Gimin Represents the lower limit value of the variable output of the ith power plant, delta P Gi Representing the current output value, Δ P, of the ith power plant Gimax Represents the upper limit value of the adjustable output variation of the ith power plant.
In some implementations, the optimizing an objective function constructed based on the active output variation of the power plant based on the transient voltage optimization constraint condition until the objective function reaches a minimum value to obtain the target active output variation of the power plant includes:
and with the minimum objective function as a target, optimizing the objective function under the condition that the objective function meets the transient voltage optimization condition to obtain the target active output variable quantity corresponding to the minimum objective function.
In a second aspect, the present application provides a power grid transient voltage stabilizing apparatus, including:
the determining module is used for determining a to-be-changed power flow line set of a weak area in the power grid based on all bus voltages related to the power grid line set;
the establishing module is used for establishing an active sensitivity matrix between a target line and the power plant, wherein the target line is a line in the set of the power flow lines to be changed;
the generating module is used for generating transient voltage optimization constraint conditions of the power grid based on the active sensitivity matrix;
the optimization module is used for optimizing a target function constructed based on the active output variation of the power plant until the target function meets the transient voltage optimization constraint condition to obtain the target active output variation of the power plant;
and the adjusting module is used for adjusting the active power output of the power plant based on the target active power output variable quantity so as to stabilize the transient voltage of the power grid.
In a third aspect, the present application provides a computer device comprising a processor and a memory for storing a computer program which, when executed by the processor, implements the grid transient voltage stabilization method according to the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the grid transient voltage stabilization method according to the first aspect.
Compared with the prior art, the application at least has the following beneficial effects:
determining a tide line set to be changed in a weak area in the power grid based on all bus voltages related to the power grid line set, so as to identify weak links of the power grid and perform voltage regulation more specifically; establishing an active sensitivity matrix between a target line and the power plant, wherein the target line is a line in the tidal current line set to be changed, and generating a transient voltage optimization constraint condition of the power grid based on the active sensitivity matrix, so that the constraint condition is established by using the active sensitivity, and the active relation between the power plant and the power grid line is considered; and finally, optimizing a target function constructed based on the active output variable quantity of the power plant based on a transient voltage optimization constraint condition until the target function reaches the minimum value to obtain the target active output variable quantity of the power plant, and adjusting the active output of the power plant based on the target active output variable quantity to ensure that the transient voltage of the power grid is stable, so that the active power flow on a line connected with a weak area after voltage regulation is more balanced, the line power flow is changed by utilizing the relation between the output of a generator and the active power sensitivity of the line, and the transient voltage stability problem of the power grid is further improved.
Drawings
Fig. 1 is a schematic flow chart of a transient voltage stabilization method for a power grid according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a transient voltage stabilizing device of a power grid according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for stabilizing a transient voltage of a power grid according to an embodiment of the present disclosure. The power grid transient voltage stabilizing method can be applied to computer equipment including but not limited to smart phones, notebook computers, tablet computers, desktop computers, physical servers, cloud servers and other equipment. As shown in fig. 1, the method for stabilizing the transient voltage of the power grid of the present embodiment includes steps S101 to S105, which are detailed as follows:
step S101, determining a to-be-changed power flow line set of a weak area in the power grid based on all bus voltages related to the power grid line set.
In this step, the bus voltage is the transient voltage of the bus, and the more the number of times of bus voltage overrun is, the worse the stability of the power grid area connected to the bus is, so this embodiment takes the power grid area connected to the bus with the more number of times of overrun as a weak area to perform voltage adjustment for the weak link of the power grid, thereby improving the transient voltage stability of the power grid.
In some embodiments, the step S101 includes:
counting the number of voltage out-of-limit times of each bus in the transient process based on the transient voltage waveforms of all buses related to the power grid line set;
and taking all lines connected with the bus with the maximum voltage out-of-limit times as the power flow line set to be changed.
In this embodiment, line sets concerned in a power grid are enumerated in a mode of specifying a lowest voltage level, three-phase short-circuit faults are set one by one, transient voltage waveforms of all buses related to the line sets are obtained through simulation, and the times that the voltage of the buses is lower than a voltage threshold (usually 0.75 pu) in a transient process are counted; and (3) counting and sequencing all related buses according to the number of transient voltage out-of-limit times, wherein the more the out-of-limit times are, the worse the transient voltage stability of the corresponding buses is, taking an area where the out-of-limit buses are collected as a weak area of the transient voltage in a power grid, and selecting a line set connected with the bus with the most out-of-limit times in the weak area of the transient voltage as a to-be-changed power flow line set, wherein the number of the lines is assumed to be m.
Step S102, establishing an active sensitivity matrix between a target line and the power plant, wherein the target line is a line in the set of the power flow line to be changed.
In this step, the active sensitivity matrix is used to characterize the degree of influence of the active power output of the power plant on the transient voltage of the target line, so that an active sensitivity relationship between the active power output of the power plant and the transient voltage of the target line can be established, and thus active sensitivity matrices between all power plants and all target lines are established.
In some embodiments, the step S102 includes:
establishing an active sensitivity relationship between the target line and the power plant based on the active variation of the target line and the output adjustment of the power plant;
and establishing the active sensitivity matrix based on active sensitivity relations between all target lines in the set of power flow lines to be changed and all power plants connected with the power grid.
In the present embodiment, it is assumed that the power plant output Δ P Gi And the number of the whole network power plants is n, and the active power variation delta P corresponding to the target line is obtained through simulation Lj Changing the active power of the target line by an amount delta P Lj And power plant output adjustment quantity delta P Gi The ratio is obtained to obtain the sensitivity relation a of the active variation between the power plant i and the line j i,j ：
And then obtaining a sensitivity matrix A of active variable quantity between each bus in the controlled bus set and all power plants in the whole network:
and S103, generating a transient voltage optimization constraint condition of the power grid based on the active sensitivity matrix.
In the step, the voltage influence of the power plant on the target line is considered, so that constraint conditions are established according to the active sensitivity matrix, the power flow of the power grid line is changed, and the transient voltage stability of the power grid is improved.
In some embodiments, the step S103 includes:
obtaining an active variable target value of the target line, and an adjustable output change lower limit value and an adjustable output change upper limit value of the power plant;
generating an active equation constraint condition between a target line and a power plant based on the active change target value and the active sensitivity matrix;
and generating an active inequality constraint condition of the power plant based on the adjustable output change lower limit value and the adjustable output change upper limit value, wherein the transient voltage optimization constraint condition of the power grid comprises the active inequality constraint condition and the active inequality constraint condition.
In this embodiment, the target value of the active variation of the line in the corresponding line set is obtained with the purpose of balancing the active power of the power flows of the lines connected to the same bus
Namely:
wherein the content of the first and second substances,
the active power flowing through the line after the power flow modification,
the active power flowing through the line before the power flow modification.
Using line active variation target value
And obtaining the equality constraint of the optimization problem with the sensitivity matrix A obtained in the step three. Optionally, the active equation constraint is expressed as:
wherein the content of the first and second substances,
representing the target value of active variation of the mth target line, a i,m Representing the active sensitivity relationship, Δ P, between the ith power plant and the mth entry road marking Gi The output adjustment amount of the ith power plant is shown.
Taking the power plant output under the scene of the whole network basic trend as a reference value to take the inverse as the lower limit delta P of the adjustable output variation of the power plant Gimin Taking the difference between the limit value of the output of the power plant and the current output as the upper limit delta P of the variable quantity of the adjustable output of the power plant Gimax And taking the obtained adjustable output variable interval of the power plant as inequality constraint of an optimization problem. Optionally, the active inequality constraint condition is expressed as:
wherein, Δ P Gimin Represents the lower limit value, delta P, of the adjustable output variation of the ith power plant Gi Representing the current output value, Δ P, of the ith power plant Gimax The upper limit value of the adjustable output variation of the ith power plant is shown.
And S104, optimizing an objective function constructed based on the active output variable quantity of the power plant based on the transient voltage optimization constraint condition until the objective function reaches the minimum value, and obtaining the target active output variable quantity of the power plant.
In this step, the objective function is optimized when the objective function minimum is taken as a target and the transient voltage optimization condition is satisfied, so as to obtain the target active output variation corresponding to the objective function at the minimum.
In the embodiment, the sum of the squares of the active power output changes Δ P of the whole network power plant Gisum Minimum as optimization target, with line modification value Δ P L And power plant variation amount delta P G The sensitivity relation between the power plants is used as equality constraint of the optimization problem, the adjustable output range of the power plant is used as inequality constraint of the optimization problem, the optimization problem is solved, and output variation delta P of the corresponding n power plants of the whole network is obtained Gi And after the output value of the power plant is modified, the power grid power flow distribution under a new scene is calculated, and the problem of improving the transient voltage stability of the power grid by changing the line power flow by utilizing the relation between the output of the generator and the line active power sensitivity is solved.
And S105, adjusting the active power output of the power plant based on the target active power output variable quantity so as to stabilize the transient voltage of the power grid.
In this step, the active power output of the corresponding power plant is adjusted according to the target active power output variation, so that the transient voltage stability of the power grid is improved.
In order to implement the power grid transient voltage stabilizing method corresponding to the method embodiment, corresponding functions and technical effects are achieved. Referring to fig. 2, fig. 2 shows a block diagram of a transient voltage stabilizing apparatus of a power grid according to an embodiment of the present application. For convenience of explanation, only the part related to the present embodiment is shown, and the power grid transient voltage stabilizing apparatus provided in the embodiment of the present application includes:
the determining module 201 is configured to determine a to-be-changed power flow line set of a weak area in a power grid based on all bus voltages related to the power grid line set;
an establishing module 202, configured to establish an active sensitivity matrix between a target line and the power plant, where the target line is a line in the set of power flow lines to be changed;
a generating module 203, configured to generate a transient voltage optimization constraint condition of the power grid based on the active sensitivity matrix;
the optimizing module 204 is configured to optimize a target function constructed based on the active output variation of the power plant until the target function meets the transient voltage optimization constraint condition, so as to obtain a target active output variation of the power plant;
an adjusting module 205, configured to adjust the active power output of the power plant based on the target active power output variation, so as to stabilize the transient voltage of the power grid.
In some embodiments, the determining module 201 is specifically configured to:
counting the number of voltage out-of-limit times of each bus in the transient process based on the transient voltage waveforms of all buses related to the power grid line set;
and taking all the lines connected with the bus with the maximum voltage out-of-limit times as the set of the power flow lines to be changed.
In some embodiments, the establishing module 202 is specifically configured to:
establishing an active sensitivity relationship between the target line and the power plant based on the active variation of the target line and the output adjustment of the power plant;
and establishing the active sensitivity matrix based on active sensitivity relations between all target lines in the set of the power flow lines to be changed and all power plants connected with the power grid.
In some embodiments, the generating module 203 is specifically configured to:
acquiring an active variable target value of the target line, and an adjustable output variation lower limit value and an adjustable output variation upper limit value of the power plant;
generating an active equation constraint condition between a target line and a power plant based on the active change target value and the active sensitivity matrix;
and generating an active inequality constraint condition of the power plant based on the adjustable output variation lower limit value and the adjustable output variation upper limit value, wherein the transient voltage optimization constraint condition of the power grid comprises the active equality constraint condition and the active inequality constraint condition.
In some embodiments, the active equation constraint is expressed as:
wherein, the first and the second end of the pipe are connected with each other,
representing the target value of active variation of the mth target line, a i,m Represents the active sensitivity relationship, Δ P, between the ith power plant and the mth entry reticle Gi The output adjustment amount of the ith power plant is shown.
In some embodiments, the active inequality constraint is expressed as:
wherein, Δ P Gimin Represents the lower limit value of the variable output of the ith power plant, delta P Gi Representing the current output value, Δ P, of the ith power plant Gimax Represents the upper limit value of the adjustable output variation of the ith power plant.
In some embodiments, the optimization module 204 is specifically configured to:
and with the minimum objective function as a target, optimizing the objective function under the condition that the objective function meets the transient voltage optimization condition to obtain the target active output variable quantity corresponding to the minimum objective function.
The power grid transient voltage stabilizing device can implement the power grid transient voltage stabilizing method of the method embodiment. The alternatives in the above-described method embodiments are also applicable to this embodiment and will not be described in detail here. The rest of the embodiments of the present application may refer to the contents of the above method embodiments, and in this embodiment, details are not described again.
Fig. 3 is a schematic structural diagram of a computer device according to an embodiment of the present application. As shown in fig. 3, the computer device 3 of this embodiment includes: at least one processor 30 (only one shown in fig. 3), a memory 31, and a computer program 32 stored in the memory 31 and executable on the at least one processor 30, the processor 30 implementing the steps of any of the above-described method embodiments when executing the computer program 32.
The computer device 3 may be a computing device such as a smart phone, a tablet computer, a desktop computer, and a cloud server. The computer device may include, but is not limited to, a processor 30, a memory 31. Those skilled in the art will appreciate that fig. 3 is merely an example of the computer device 3, and does not constitute a limitation of the computer device 3, and may include more or less components than those shown, or combine some of the components, or different components, such as input output devices, network access devices, etc.
The Processor 30 may be a Central Processing Unit (CPU), and the Processor 30 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 31 may in some embodiments be an internal storage unit of the computer device 3, such as a hard disk or a memory of the computer device 3. The memory 31 may also be an external storage device of the computer device 3 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the computer device 3. Further, the memory 31 may also include both an internal storage unit and an external storage device of the computer device 3. The memory 31 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 31 may also be used to temporarily store data that has been output or is to be output.
In addition, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in any of the method embodiments described above.
The embodiments of the present application provide a computer program product, which when executed on a computer device, enables the computer device to implement the steps in the above method embodiments.
In several embodiments provided herein, it will be understood that each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are further detailed to explain the objects, technical solutions and advantages of the present application, and it should be understood that the above-mentioned embodiments are only examples of the present application and are not intended to limit the scope of the present application. It should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. A method for stabilizing transient voltage of a power grid is characterized by comprising the following steps:
determining a to-be-changed power flow line set of a weak area in a power grid based on all bus voltages related to the power grid line set;
establishing an active sensitivity matrix between a target line and a power plant, wherein the target line is a line in the tidal current line set to be changed;
generating transient voltage optimization constraint conditions of the power grid based on the active sensitivity matrix;
optimizing a target function constructed based on the active output variation of the power plant based on a transient voltage optimization constraint condition until the target function reaches a minimum value to obtain the target active output variation of the power plant;
and adjusting the active power output of the power plant based on the target active power output variable quantity so as to stabilize the transient voltage of the power grid.
2. The method for stabilizing transient voltage of power grid according to claim 1, wherein the determining the set of to-be-changed power flow lines of the weak area in the power grid based on all bus voltages involved in the set of power grid lines comprises:
counting the number of voltage out-of-limit times of each bus in the transient process based on the transient voltage waveforms of all buses related to the power grid line set;
and taking all the lines connected with the bus with the maximum voltage out-of-limit times as the set of the power flow lines to be changed.
3. The method of claim 1, wherein the establishing an active sensitivity matrix between a target line and the power plant comprises:
establishing an active sensitivity relationship between the target line and the power plant based on the active variation of the target line and the output adjustment of the power plant;
and establishing the active sensitivity matrix based on active sensitivity relations between all target lines in the set of the power flow lines to be changed and all power plants connected with the power grid.
4. The method according to claim 1, wherein the generating transient voltage optimization constraints for the grid based on the active sensitivity matrix comprises:
acquiring an active variable target value of the target line, and an adjustable output variation lower limit value and an adjustable output variation upper limit value of the power plant;
generating an active equation constraint condition between a target line and a power plant based on the active change target value and the active sensitivity matrix;
and generating an active inequality constraint condition of the power plant based on the adjustable output change lower limit value and the adjustable output change upper limit value, wherein the transient voltage optimization constraint condition of the power grid comprises the active inequality constraint condition and the active inequality constraint condition.
5. The method of power grid transient voltage stabilization according to claim 4, wherein the active equation constraints are expressed as:
wherein the content of the first and second substances,
representing the target value of active variation of the mth target line, a i,m Representing the active sensitivity relationship, Δ P, between the ith power plant and the mth entry road marking Gi The output adjustment amount of the ith power plant is shown.
6. The power grid transient voltage stabilization method of claim 4, wherein the active inequality constraint is expressed as:
wherein, Δ P Gimin Represents the lower limit value, delta P, of the adjustable output variation of the ith power plant Gi Representing the current output value, Δ P, of the ith power plant Gimax Represents the upper limit value of the adjustable output variation of the ith power plant.
7. The method according to claim 1, wherein the optimizing an objective function constructed based on the active power output variation of the power plant based on the transient voltage optimization constraint condition until the objective function reaches a minimum value to obtain the target active power output variation of the power plant comprises:
and with the minimum objective function as a target, optimizing the objective function under the condition that the objective function meets the transient voltage optimization condition to obtain the target active output variable quantity corresponding to the minimum objective function.
8. A grid transient voltage stabilization device, comprising:
the determining module is used for determining a to-be-changed power flow line set of a weak area in the power grid based on all bus voltages related to the power grid line set;
the establishing module is used for establishing an active sensitivity matrix between a target line and a power plant, wherein the target line is a line in the set of the power flow lines to be changed;
the generating module is used for generating transient voltage optimization constraint conditions of the power grid based on the active sensitivity matrix;
the optimization module is used for optimizing a target function constructed based on the active output variation of the power plant until the target function meets the transient voltage optimization constraint condition to obtain the target active output variation of the power plant;
and the adjusting module is used for adjusting the active power output of the power plant based on the target active power output variable quantity so as to stabilize the transient voltage of the power grid.
9. A computer device comprising a processor and a memory for storing a computer program which, when executed by the processor, implements the grid transient voltage stabilization method of any of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the grid transient voltage stabilization method according to any one of claims 1 to 7.
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| CN116388296A (en) * | 2023-04-04 | 2023-07-04 | 山东大学 | Power angle stable control method and system based on sensitivity mapping |
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| CN116388296A (en) * | 2023-04-04 | 2023-07-04 | 山东大学 | Power angle stable control method and system based on sensitivity mapping |
| CN116388296B (en) * | 2023-04-04 | 2024-01-23 | 山东大学 | Power angle stable control method and system based on sensitivity mapping |
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