A method and device for adaptive power optimization control of low voltage area

By dynamically adjusting the active and reactive commands in the low-voltage platform area, optimizing the load rate, power factor and voltage amplitude, the problems of heavy overload and low voltage quality in the low-voltage platform area are solved, and safer and more efficient power supply is achieved.

CN118783460BActive Publication Date: 2025-02-14STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
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Patent Information

Application Number
CN202411268106.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-11
Publication Date
2025-02-14
Estimated Expiration
2044-09-11

AI Technical Summary

Technical Problem

Under the high permeability distributed power supply access in the low-voltage table area, it is easy to have problems such as voltage over limit, load over limit, and low power factor, which affects the safety and efficiency of power supply.

Method used

Adaptive power optimization control method in the low-voltage table area is adopted, and the load power, the voltage amplitude and power factor of the table area are obtained, and the active and reactive commands are dynamically adjusted to optimize the load rate, power factor and voltage amplitude in the table area. .

Benefits of technology

It effectively reduces the heavy overload problem in the low-voltage table area, improves the supply voltage quality, and does not require additional hardware costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a method and device for adaptive power optimization control of a low-voltage power distribution area, wherein the method comprises: obtaining the load power of the distribution area, and determining a first active power regulation instruction parameter according to the relationship between the load power of the distribution area and the load power setting value; obtaining the voltage amplitude of the common connection point, and determining a second active power regulation instruction parameter according to the relationship between the voltage amplitude of the common connection point and the voltage limit range of the common connection point; obtaining the power factor of the distribution area, and determining a reactive power regulation instruction parameter according to the relationship between the power factor of the distribution area and the power factor setting value; obtaining an active power regulation given instruction according to the first active power regulation instruction parameter and the second active power regulation instruction parameter; obtaining a reactive power regulation given instruction according to the reactive power regulation instruction parameter; outputting the required active power and reactive power according to the active power regulation given instruction and the reactive power regulation given instruction. The present invention can reduce the problem of heavy overload in low-voltage distribution areas and improve the quality of power supply voltage in low-voltage distribution areas.
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Description

Technical Field

[0001] The present invention relates to the field of power electronics technology, and in particular to a method and device for adaptive power optimization control of a low-voltage station area. Background Art

[0002] The access of distributed power sources with high penetration rate to the distribution network may cause problems such as node voltage exceeding the limit, reverse flow, increased network loss, and decreased power quality, which will affect the safe and stable operation of the substation. Distributed power sources need to be connected to the distribution network through power electronic converters as interfaces. As the new power system is forming a development trend of high proportion of new energy and high proportion of power electronic equipment, compared with the traditional power grid dominated by synchronous generators, power electronic converters can respond faster and have stronger power controllability. Therefore, the proportion of converters in the power system has increased, but this has also led to a significant reduction in the inertial support of the power grid. The voltage and frequency stability of the new power system faces many challenges. In order to improve the system stability under the "double high" conditions, the advantages of converter flexibility and controllability can be used to compensate for the inherent inertial damping characteristics of the system, and provide reliable voltage and frequency support for the system. With the increase in the penetration rate of new energy, the grid code requires it to inject reactive power to actively support the grid voltage.

[0003] The problem of over-limit voltage in the substation is often improved by adjusting reactive power. However, the low-voltage distribution substation presents a high impedance characteristic of R>X. The traditional reactive-amplitude control method has limited regulation ability in the low-voltage substation, and it is often necessary to adjust the substation voltage amplitude by controlling active power. But at the same time, in the low-voltage substation, over-limit load and low power factor will also affect the safe and efficient operation of the low-voltage substation, and are the main problems faced by the low-voltage substation. Therefore, how to comprehensively consider multiple objective factors such as substation load rate, power factor and voltage amplitude, and improve the problems of heavy overload and reactive pollution in the low-voltage substation through power electronics equipment, is of great significance to the low-voltage substation.

[0004] The existing patent document CN115085285A discloses an adaptive power coordination control method for flexible DC interconnection of multiple substations. This method mainly takes the power self-balancing between substations as the benchmark to ensure the power balance between each substation, but does not consider the load rate and power factor within a single substation, and its control target is relatively single. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a low-voltage area adaptive power optimization control method and device, which can reduce the heavy overload problem of the low-voltage area and improve the power supply voltage quality of the low-voltage area.

[0006] The technical solution adopted by the present invention to solve the technical problem is: to provide a low voltage area adaptive power optimization control method, comprising the following steps:

[0007] Acquire the load power of the substation area, and determine the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value;

[0008] Acquire a voltage amplitude at a common connection point, and determine a second active power regulation instruction parameter according to a relationship between the voltage amplitude at the common connection point and a voltage limit range at the common connection point;

[0009] Obtaining the power factor of the substation area, and determining the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value;

[0010] Obtaining an active power regulation given instruction according to the first active power regulation instruction parameter and the second active power regulation instruction parameter;

[0011] Obtaining a reactive power regulation given instruction according to the reactive power regulation instruction parameter;

[0012] The required active power and reactive power are output according to the active power regulation given instruction and the reactive power regulation given instruction.

[0013] Determining the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value specifically includes:

[0014] Determining whether the load power of the station area is greater than the load power setting value;

[0015] If the load power of the substation is greater than the load power setting value, the first active power adjustment instruction parameter is the difference between the load power of the substation and the load power setting value;

[0016] If the load power of the substation is less than or equal to the load power setting value, the first active power adjustment instruction parameter is zero.

[0017] The determining of the second active power regulation instruction parameter according to the relationship between the common connection point voltage amplitude and the common connection point voltage limit range specifically includes:

[0018] Determining whether the common connection point voltage amplitude is greater than a minimum value of the common connection point voltage limit range and less than a maximum value of the common connection point voltage limit range;

[0019] If the common connection point voltage amplitude is greater than the minimum value of the common connection point voltage limit range and less than the maximum value of the common connection point voltage limit range, the second active power regulation instruction parameter is zero;

[0020] If the common connection point voltage amplitude is less than or equal to the minimum value of the common connection point voltage limit range, the second active power regulation instruction parameter is ;

[0021] If the common connection point voltage amplitude is greater than or equal to the maximum value of the common connection point voltage limit range, then the second active power regulation instruction parameter is ;

[0022] Among them, Δ P 2 is the second active power regulation instruction parameter, U pcc is the voltage amplitude at the common connection point, U min is the minimum value of the common connection point voltage limit range, U max is the maximum value of the voltage limit range of the common connection point, R is the equivalent impedance of the line.

[0023] The step of determining the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value specifically includes:

[0024] Determining whether the power factor of the substation is greater than a power factor setting value;

[0025] If the power factor of the substation is greater than the power factor setting value, the reactive power regulation instruction parameter is zero;

[0026] If the power factor of the substation is less than or equal to the power factor setting value, determining whether the angle between the substation voltage and current is greater than zero;

[0027] If the angle between the voltage and current in the substation is greater than zero, the reactive power regulation instruction parameter is ;

[0028] If the angle between the voltage and current in the substation area is less than or equal to zero, the reactive power regulation instruction parameter is ;

[0029] Among them, Δ Q is the reactive power regulation instruction parameter, PF is the power factor of the area, S is the transformer capacity in the substation.

[0030] The active power regulation given instruction is Calculated, among which, P ref is the active power regulation given instruction, Δ P 1 is the first active power regulation instruction parameter, Δ P 2 is the second active power regulation instruction parameter, k p It is the active power-amplitude adjustment sensitivity coefficient.

[0031] The reactive power regulation given instruction is the reactive power regulation instruction parameter.

[0032] The technical solution adopted by the present invention to solve the technical problem is: to provide a low-voltage area adaptive power optimization control device, comprising:

[0033] A first active power regulation instruction parameter determination module, used to obtain the load power of the substation area, and determine the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value;

[0034] A second active power regulation instruction parameter determination module, used for obtaining a common connection point voltage amplitude, and determining a second active power regulation instruction parameter according to a relationship between the common connection point voltage amplitude and a common connection point voltage limit range;

[0035] A reactive power regulation instruction parameter determination module, used to obtain the power factor of the substation area, and determine the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value;

[0036] An active power regulation given instruction determination module, used to obtain an active power regulation given instruction according to the first active power regulation instruction parameter and the second active power regulation instruction parameter;

[0037] A reactive power regulation given instruction determination module is used to obtain a reactive power regulation given instruction according to the reactive power regulation instruction parameters;

[0038] The output module is used to output the required active power and reactive power according to the active power regulation given instruction and the reactive power regulation given instruction.

[0039] The technical solution adopted by the present invention to solve its technical problem is: to provide an electronic device, including a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned low-voltage area adaptive power optimization control method when executing the computer program.

[0040] The technical solution adopted by the present invention to solve its technical problem is: providing a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned low-voltage area adaptive power optimization control method are implemented.

[0041] Beneficial Effects

[0042] Due to the adoption of the above-mentioned technical scheme, compared with the prior art, the present invention has the following advantages and positive effects: the present invention takes grid-connected equipment such as energy storage inverters, microgrid grid-connected inverters, flexible interconnection devices as the regulation objects, takes the load rate, power factor, and voltage amplitude of the substation as the comprehensive optimization goals, dynamically adjusts the active and reactive instructions, reduces the problem of heavy overload in low-voltage substations, and improves the power supply voltage quality of low-voltage substations, and the entire method does not require additional hardware costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a simplified topological diagram of the low voltage distribution station area;

[0044] Figure 2 is a flow chart of a low voltage area adaptive power optimization control method according to a first embodiment of the present invention;

[0045] Figure 3 It is a framework diagram of the low voltage area adaptive power optimization control method according to the first embodiment of the present invention. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0047] The first embodiment of the present invention relates to a low-voltage area adaptive power optimization control method, which takes the load rate, power factor and voltage amplitude of the area as the optimization target, and obtains the active and reactive operation instructions of the power electronic device by adaptive parameters, which is suitable for Figure 1 The low voltage distribution station area shown. Figure 1 In the definition, the voltage at the head end of the low voltage distribution system line U S , the voltage at the common connection point at the end of the line U PCC , line equivalent impedance R , line equivalent inductive reactance X , load power of the area P L , low voltage transformer capacity S , active power regulation given instruction P ref , reactive power regulation given instruction Q ref .

[0048] like Figure 2 and Figure 3 As shown, the low voltage area adaptive power optimization control method of this embodiment includes the following steps:

[0049] Step 1: Obtain the load power of the substation P L , and according to the load power of the station area P L The relationship between the load power setting value and the first active power regulation instruction parameter Δ P 1.

[0050] In this step, according to the load power of the station area P L The relationship between the load power setting value and the first active power regulation instruction parameter Δ P 1. Specifically include:

[0051] Determine the load power of the area P L Whether it is greater than the load power setting value;

[0052] If the load power of the station area P L is greater than the load power setting value, that is, P L > λ·S ,in, λ is the load rate limit of the area, then the first active power regulation instruction parameter Δ P 1 is the load power of the station area P L and the load power setting value λ·S The difference, that is ;

[0053] If the load power of the station area P L Less than or equal to the load power setting value λ·S , then the first active power regulation instruction parameter Δ P 1 is zero.

[0054] Step 2: Get the voltage amplitude at the common connection point U PCC , and according to the voltage amplitude of the common connection point U PCC The relationship between the voltage limit range of the common connection point determines the second active power regulation instruction parameter Δ P 2.

[0055] In this step, according to the voltage amplitude of the common connection point U PCC The relationship between the voltage limit range of the common connection point determines the second active power regulation instruction parameter Δ P 2. Specifically include:

[0056] Determine the voltage amplitude of the common connection point U PCC Is it greater than the minimum value of the common connection point voltage limit range? U min and is less than the maximum value of the common connection point voltage limit range U max ;

[0057] If the voltage amplitude of the common connection point U PCC Greater than the minimum value of the common connection point voltage limit range U min and is less than the maximum value of the common connection point voltage limit range U max ,Right now U min < U PCC < U max , then the second active power regulation instruction parameter Δ P 2 is zero;

[0058] If the voltage amplitude of the common connection point U PCC Less than or equal to the minimum value of the common connection point voltage limit range U min ,Right now U PCC ≤ U min , then the second active power regulation instruction parameter is ;

[0059] If the voltage amplitude of the common connection point U PCC Greater than or equal to the maximum value of the common connection point voltage limit range U max ,Right now U PCC ≥ U max , then the second active power regulation instruction parameter is .

[0060] Step 3: Get the power factor of the area PF , and according to the power factor of the area PF and power factor setting value PF ref Determine the reactive power regulation command parameter Δ Q .

[0061] In this step, according to the power factor of the station area PF and power factor setting value PF ref Determine the reactive power regulation command parameter Δ Q , including:

[0062] Determine the power factor of the area PF Is it greater than the power factor setting value? PF ref ;

[0063] If the power factor of the station area PF Greater than the power factor setting value PF ref ,Right now PF > PF ref , then the reactive power regulation instruction parameter Δ Q is zero;

[0064] If the power factor of the station area PF Less than or equal to the power factor setting value PF ref ,Right now PF ≤ PF ref , then further determine the angle between the voltage and current in the station area θ Is it greater than zero?

[0065] If the angle between the voltage and current in the station area is θ Greater than zero, that is θ >0, then the reactive power regulation instruction parameter is ;

[0066] If the angle between the voltage and current in the station area is θ Less than or equal to zero, that is θ ≤0, then the reactive power regulation instruction parameter is .

[0067] Step 4: adjusting the first active power command parameter Δ P 1 and the second active power regulation instruction parameter Δ P 2. Get the active power regulation given instruction. The active power regulation given instruction in this embodiment is obtained by Calculated, where P ref To adjust the given command for active power, k p It is the active power-amplitude adjustment sensitivity coefficient, which can be set by yourself.

[0068] Step 5: According to the reactive power adjustment instruction parameter Δ Q The reactive power regulation given instruction is obtained. In this embodiment, the reactive power regulation given instruction is the reactive power regulation instruction parameter, that is, ,in, Q ref Give instructions for reactive power regulation.

[0069] Step 6: According to the active power regulation, a given instruction is given. P ref and the reactive power regulation given instruction Q ref Output the required active power and reactive power.

[0070] It is not difficult to find that this implementation can achieve multi-objective optimization control of the load rate, power factor and voltage amplitude in the substation through the controllability and monitoring capabilities of the power electronic power module itself without adding additional communication devices, without increasing additional hardware costs.

[0071] The second embodiment of the present invention relates to a low voltage area adaptive power optimization control device, comprising:

[0072] A first active power regulation instruction parameter determination module, used to obtain the load power of the substation area, and determine the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value;

[0073] A second active power regulation instruction parameter determination module, used for obtaining a common connection point voltage amplitude, and determining a second active power regulation instruction parameter according to a relationship between the common connection point voltage amplitude and a common connection point voltage limit range;

[0074] A reactive power regulation instruction parameter determination module, used to obtain the power factor of the substation area, and determine the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value;

[0075] An active power regulation given instruction determination module, used to obtain an active power regulation given instruction according to the first active power regulation instruction parameter and the second active power regulation instruction parameter;

[0076] A reactive power regulation given instruction determination module is used to obtain a reactive power regulation given instruction according to the reactive power regulation instruction parameters;

[0077] The output module is used to output the required active power and reactive power according to the active power regulation given instruction and the reactive power regulation given instruction.

[0078] The first active power regulation instruction parameter determination module includes:

[0079] A first judging unit, used for judging whether the load power of the substation is greater than the load power setting value;

[0080] A first determining unit, configured to determine, when the load power of the substation area is greater than the load power setting value, that the first active power regulation instruction parameter is a difference between the load power of the substation area and the load power setting value;

[0081] The second determining unit is used to determine that the first active power regulation instruction parameter is zero when the load power of the substation is less than or equal to the load power setting value.

[0082] The second active power regulation instruction parameter determination module includes:

[0083] A second judging unit, configured to judge whether the common connection point voltage amplitude is greater than a minimum value of the common connection point voltage limit range and less than a maximum value of the common connection point voltage limit range;

[0084] A third determining unit is used to determine that the second active power regulation instruction parameter is zero when the voltage amplitude at the common connection point is greater than the minimum value of the common connection point voltage limit range and less than the maximum value of the common connection point voltage limit range;

[0085] The fourth determining unit is used to determine that the second active power regulation instruction parameter is when the common connection point voltage amplitude is less than or equal to the minimum value of the common connection point voltage limit range. ;

[0086] A fifth determining unit is used to determine that the second active power regulation instruction parameter is when the common connection point voltage amplitude is greater than or equal to the maximum value of the common connection point voltage limit range. ;

[0087] Among them, Δ P 2 is the second active power regulation instruction parameter, U pcc is the voltage amplitude at the common connection point, U min is the minimum value of the common connection point voltage limit range, U max is the maximum value of the voltage limit range of the common connection point, R is the equivalent impedance of the line.

[0088] The reactive power regulation instruction parameter determination module includes:

[0089] A third judgment unit, used to judge whether the power factor of the substation is greater than a power factor setting value;

[0090] A sixth determining unit, configured to determine that the reactive power regulation instruction parameter is zero when the power factor of the substation area is greater than the power factor setting value;

[0091] A fourth judgment unit, used for judging whether the angle between the voltage and current in the transformer area is greater than zero when the power factor of the transformer area is less than or equal to the power factor setting value;

[0092] The seventh determining unit is used to determine the reactive power regulation instruction parameter as follows when the angle between the voltage and the current in the substation area is greater than zero: ;

[0093] The eighth determining unit is used to determine the reactive power regulation instruction parameter as when the angle between the voltage and the current in the substation area is less than or equal to zero. ;

[0094] Among them, Δ Q is the reactive power regulation instruction parameter, PF is the power factor of the area, S is the transformer capacity in the substation.

[0095] The active power regulation given instruction determination module is Calculate the active power regulation given instruction, where: P ref is the active power regulation given instruction, Δ P 1 is the first active power regulation instruction parameter, Δ P 2 is the second active power regulation instruction parameter, k p It is the active power-amplitude adjustment sensitivity coefficient.

[0096] The reactive power regulation given instruction determination module uses the reactive power regulation instruction parameter as the reactive power regulation given instruction.

[0097] The third embodiment of the present invention relates to an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the low-voltage area adaptive power optimization control method of the first embodiment when executing the computer program.

[0098] The fourth embodiment of the present invention relates to a computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of the low-voltage area adaptive power optimization control method of the first embodiment are implemented.

[0099] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program codes.

[0100] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0101] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction method, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0102] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0103] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A low voltage area adaptive power optimization control method, characterized in that: The following steps are involved: Acquire the load power of the substation area, and determine the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value; Acquiring a common connection point voltage amplitude, and determining a second active power regulation instruction parameter according to a relationship between the common connection point voltage amplitude and a common connection point voltage limit range, specifically includes: Determining whether the common connection point voltage amplitude is greater than a minimum value of the common connection point voltage limit range and less than a maximum value of the common connection point voltage limit range; If the common connection point voltage amplitude is greater than the minimum value of the common connection point voltage limit range and less than the maximum value of the common connection point voltage limit range, the second active power regulation instruction parameter is zero; If the common connection point voltage amplitude is less than or equal to the minimum value of the common connection point voltage limit range, the second active power regulation instruction parameter is If the common connection point voltage amplitude is greater than or equal to the maximum value of the common connection point voltage limit range, then the second active power regulation instruction parameter is Among them, ΔP2 is the second active power regulation instruction parameter, U pcc is the voltage amplitude of the common connection point, U min is the minimum value of the voltage limit range of the common connection point, U max is the maximum value of the voltage limit range of the common connection point, and R is the equivalent impedance of the line; Obtaining the power factor of the substation area, and determining the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value; The active power regulation given instruction is obtained according to the first active power regulation instruction parameter and the second active power regulation instruction parameter; wherein the active power regulation given instruction is obtained by P ref =ΔP1+k p ·ΔP2 is calculated, where P ref is the active power regulation given instruction, ΔP1 is the first active power regulation instruction parameter, expressed as: ΔP1 = P L -λ·S,P L is the load power of the substation, λ is the load rate limit of the substation, S is the capacity of the low-voltage substation transformer, λ·S represents the load power setting value, ΔP2 is the second active power regulation instruction parameter, k p It is the active power-amplitude adjustment sensitivity coefficient; Obtaining a reactive power regulation given instruction according to the reactive power regulation instruction parameter; The required active power and reactive power are output according to the active power regulation given instruction and the reactive power regulation given instruction.

2. The low voltage area adaptive power optimization control method according to claim 1 is characterized in that: The determining of the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value specifically includes: Determining whether the load power of the station area is greater than the load power setting value; If the load power of the substation is greater than the load power setting value, the first active power adjustment instruction parameter is the difference between the load power of the substation and the load power setting value; If the load power of the substation is less than or equal to the load power setting value, the first active power adjustment instruction parameter is zero.

3. The low voltage area adaptive power optimization control method according to claim 1 is characterized in that: The step of determining the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value specifically includes: Determining whether the power factor of the substation is greater than a power factor setting value; If the power factor of the substation is greater than the power factor setting value, the reactive power regulation instruction parameter is zero; If the power factor of the substation is less than or equal to the power factor setting value, determining whether the angle between the substation voltage and current is greater than zero; If the angle between the voltage and current in the substation is greater than zero, the reactive power regulation instruction parameter is If the angle between the voltage and current in the substation area is less than or equal to zero, the reactive power regulation instruction parameter is Among them, ΔQ is the reactive power regulation command parameter, PF is the power factor of the substation, and S is the transformer capacity of the substation.

4. The low voltage area adaptive power optimization control method according to claim 1 is characterized in that: The reactive power regulation given instruction is the reactive power regulation instruction parameter.

5. A low voltage area adaptive power optimization control device, characterized in that: include: A first active power regulation instruction parameter determination module, used to obtain the load power of the substation area, and determine the first active power regulation instruction parameter according to the relationship between the load power of the substation area and the load power setting value; A second active power regulation instruction parameter determination module, used for obtaining a common connection point voltage amplitude, and determining a second active power regulation instruction parameter according to a relationship between the common connection point voltage amplitude and a common connection point voltage limit range; The second active power regulation instruction parameter determination module includes: A second judging unit, configured to judge whether the common connection point voltage amplitude is greater than a minimum value of the common connection point voltage limit range and less than a maximum value of the common connection point voltage limit range; A third determining unit is used to determine that the second active power regulation instruction parameter is zero when the voltage amplitude at the common connection point is greater than the minimum value of the common connection point voltage limit range and less than the maximum value of the common connection point voltage limit range; The fourth determining unit is used to determine that the second active power regulation instruction parameter is when the common connection point voltage amplitude is less than or equal to the minimum value of the common connection point voltage limit range. A fifth determining unit is used to determine that the second active power regulation instruction parameter is when the common connection point voltage amplitude is greater than or equal to the maximum value of the common connection point voltage limit range. Among them, ΔP2 is the second active power regulation instruction parameter, U pcc is the voltage amplitude of the common connection point, U min is the minimum value of the voltage limit range of the common connection point, U max is the maximum value of the voltage limit range of the common connection point, and R is the equivalent impedance of the line; A reactive power regulation instruction parameter determination module, used to obtain the power factor of the substation area, and determine the reactive power regulation instruction parameter according to the relationship between the power factor of the substation area and the power factor setting value; The active power regulation given instruction determination module is used to obtain the active power regulation given instruction according to the first active power regulation instruction parameter and the second active power regulation instruction parameter; the active power regulation given instruction determination module determines the active power regulation given instruction through P ref =ΔP1+k p ·ΔP2 calculates the active power regulation given instruction, where P ref is the active power regulation given instruction, ΔP1 is the first active power regulation instruction parameter, expressed as: ΔP1 = P L -λ·S,P L is the load power of the substation, λ is the load rate limit of the substation, S is the capacity of the low-voltage substation transformer, λ·S represents the load power setting value, ΔP2 is the second active power regulation instruction parameter, k p It is the active power-amplitude adjustment sensitivity coefficient; A reactive power regulation given instruction determination module is used to obtain a reactive power regulation given instruction according to the reactive power regulation instruction parameters; The output module is used to output the required active power and reactive power according to the active power regulation given instruction and the reactive power regulation given instruction.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the low-voltage area adaptive power optimization control method as described in any one of claims 1-4 are implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the low-voltage station area adaptive power optimization control method as claimed in any one of claims 1-4 are implemented.

Citation Information

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