CN112564122B - Power factor and voltage combined regulation method and device - Google Patents

Power factor and voltage combined regulation method and device Download PDF

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Publication number
CN112564122B
CN112564122B CN202011488950.5A CN202011488950A CN112564122B CN 112564122 B CN112564122 B CN 112564122B CN 202011488950 A CN202011488950 A CN 202011488950A CN 112564122 B CN112564122 B CN 112564122B
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voltage
power factor
evaluation model
target
power
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CN112564122A (en
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王存平
李洪涛
郝良
李子衿
于希娟
赵贺
饶强
张淼
宋一凡
于浩然
王博
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State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

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Abstract

The application discloses a power factor and voltage combined adjusting method and device. Wherein, the method comprises the following steps: establishing a power factor evaluation model, wherein the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor; establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage; obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; and generating a control strategy based on the joint control model, wherein the control strategy is used for regulating the power factor and the voltage. The power factor or voltage regulating circuit solves the technical problem that the power factor or voltage is not in the limit range because the power factor and the voltage cannot be simultaneously adjusted in the related technology.

Description

Power factor and voltage combined regulation method and device
Technical Field
The application relates to the field of electrical control, in particular to a power factor and voltage combined regulation method and device.
Background
In the related art, when voltage out-of-limit and power factor out-of-limit are processed, a single adjusting mode is often directly adopted to singly adjust the voltage or the power factor without considering the mutual influence between the voltage and the power factor, and the power factor is often out of the limit range when the voltage is adjusted to enable the voltage to meet the limit requirement; or when the power factor is adjusted to meet the limit requirements, so that the voltage is not within its limit. Therefore, the related art has a technical problem that the voltage and the power factor cannot be well balanced in the adjusting process.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the application provides a power factor and voltage combined adjusting method and device, so as to at least solve the technical problem that the power factor or the voltage is not within the limit range of the power factor or the voltage due to the fact that the power factor and the voltage cannot be simultaneously adjusted when being adjusted in the related art.
According to an aspect of the embodiments of the present application, there is provided a method for jointly adjusting a power factor and a voltage, including: establishing a power factor evaluation model, wherein the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor; establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage; obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; and generating a control strategy based on the joint control model, wherein the control strategy is used for regulating the power factor and the voltage.
Optionally, establishing a power factor evaluation model includes: acquiring a control target value of a power factor of a transformer substation; determining a transformer substation set of power factors to be controlled; acquiring a power factor of a target substation in a substation set; and establishing a power factor evaluation model according to the control target value, the transformer substation set, the power factor of the target transformer substation, the sensitivity of the power factor to the reactive power and the adjustment quantity of the reactive power.
Optionally, the power factor evaluation model is:
Figure BDA0002840161060000011
wherein, F 1 Notation for power factor evaluation model, pf set The control target value of the power factor of the transformer substation is obtained; n is a radical of Q The control method comprises the steps that a substation set of power factors to be controlled is provided, wherein the substation set of the power factors to be controlled is a substation set smaller than a control target value of the power factors of the substations; pf k Is the power factor of the kth target substation; c Q Is the sensitivity of the power factor to reactive power; Δ Q is the amount of regulation of reactive power.
Optionally, establishing a voltage evaluation model, further comprising: acquiring a control target value of voltage; determining a set of voltage nodes of a voltage to be controlled; acquiring a target node voltage in a voltage node set; obtaining reactive power regulating quantity and sensitivity of a voltage value to reactive power; and establishing a voltage evaluation model according to the control target value, the voltage node set, the voltage of the target node, the reactive power regulating quantity and the sensitivity of the voltage value to the reactive power.
Optionally, the voltage evaluation model is:
Figure BDA0002840161060000021
wherein, F 2 Is a notation of a voltage evaluation model, N U Is a set of voltage nodes; u shape k Is the kth target node voltage; u shape set Is a control target value of the voltage; delta Q is a reactive power regulating variable; c U The sensitivity of the target node voltage to reactive power.
Optionally, a joint control model is obtained according to the power factor evaluation model and the voltage evaluation model, and the joint control model is:
F 3 ＝w 1 F 1 +w 2 F 2
Figure BDA0002840161060000022
wherein, F 3 Is a notation of a joint control model, Q G Reactive power that is a reactive source; the subscripts max, min represent the upper and lower limits, respectively, where U max 、U min Upper and lower limits of the target node voltage, respectively; pf max 、pf min Respectively an upper limit value and a lower limit value of the power factor of the target transformer substation; w is a 1 And w 2 Weight coefficients, w, of the power factor evaluation model and the voltage evaluation model, respectively 1 And w 2 In [0, 1 ]]A value of m, and w 1 +w 2 ＝1。
Optionally, a control strategy is generated based on the joint control model, and the control strategy includes: when the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, and the power factor is larger than the upper limit value of the power factor of the target transformer substation or smaller than the lower limit value of the power factor of the target transformer substation, setting w 1 And w 2 Are all 0.5; when only the power factor is larger than the upper limit value of the power factor of the target transformer substation or smaller than the lower limit value of the power factor of the target transformer substation, setting w 1 ＝1、w 2 0; when only the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, setting w 1 ＝0、w 2 ＝1。
There is also provided, in accordance with an aspect of an embodiment of the present application, a power factor and voltage joint regulation apparatus, including: the first establishing module is used for establishing a power factor evaluation model, and the power factor evaluation model is used for calculating the minimum value of deviation of the power factor; the second establishing module is used for establishing a voltage evaluation model, and the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage; the determining module is used for obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; and the control module is used for generating a control strategy based on the joint control model, wherein the control strategy is used for regulating the power factor and the voltage.
According to an aspect of the embodiments of the present application, there is also provided a non-volatile storage medium, which includes a stored program, wherein a device in which the non-volatile storage medium is controlled to perform any one of the methods of jointly adjusting the power factor and the voltage when the program runs.
According to an aspect of the embodiments of the present application, there is further provided a processor, configured to execute a program stored in a memory, wherein the program executes any one of the methods for jointly adjusting power factor and voltage.
In the embodiment of the application, a power factor evaluation model and a voltage evaluation model are established, and a combined control model is obtained through the power factor evaluation model and the voltage evaluation model; the control strategy is generated based on the combined control model, wherein the control strategy is used for adjusting the power factor and the voltage, the technical effect of simultaneously considering both the power factor and the voltage in the adjusting process is achieved, and the technical problem that the power factor or the voltage is not in the limit value range because the power factor and the voltage cannot be simultaneously considered when the power factor and the voltage are adjusted in the related technology is solved.
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The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic flow diagram of an alternative power factor and voltage joint regulation method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an alternative power factor and voltage combined regulator according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, 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 partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present application, there is provided a method embodiment for combined power factor and voltage regulation, it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 1 is a method for jointly adjusting a power factor and a voltage according to an embodiment of the present application, as shown in fig. 1, the method includes the following steps:
step S102, establishing a power factor evaluation model, wherein the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor;
step S104, establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the voltage deviation;
step S106, obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; and generating a control strategy based on the joint control model, wherein the control strategy is used for regulating the power factor and the voltage.
In the combined regulation method of the power factor and the voltage, firstly, a power factor evaluation model can be established, wherein the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor; then, establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the voltage deviation; finally, obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; the control strategy is generated based on the combined control model, wherein the control strategy is used for adjusting the power factor and the voltage, the technical effect that the power factor and the voltage are simultaneously considered in the adjusting process is achieved, and the technical problem that the power factor or the voltage is not in the limit value range because the power factor and the voltage cannot be simultaneously considered in the adjusting process in the related technology is solved.
In some optional implementations of the present application, the power factor evaluation model may be established by: a control target value of the power factor of the transformer substation can be obtained; then determining a transformer substation set of the power factor to be controlled; then acquiring the power factor of a target transformer substation in the transformer substation set; and finally, establishing a power factor evaluation model according to the control target value, the transformer substation set, the power factor of the target transformer substation, the sensitivity of the power factor to the reactive power and the adjustment quantity of the reactive power.
Specifically, the power factor evaluation model may be:
Figure BDA0002840161060000041
wherein, F 1 Notation for power factor evaluation model, pf set The control target value of the power factor of the transformer substation; n is a radical of Q The control method comprises the following steps that a substation set of power factors to be controlled is provided, wherein the substation set of the power factors to be controlled is a substation set smaller than a control target value of the power factors of the substations; pf k Is the power factor of the kth target substation; c Q Is the sensitivity of the power factor to reactive power; Δ Q is the amount of adjustment of the reactive power.
In some optional embodiments of the present application, the voltage evaluation model may be established by: a control target value of the voltage can be obtained; then determining a voltage node set of the voltage to be controlled; then acquiring the voltage of a target node in the voltage node set; obtaining reactive power regulating quantity and sensitivity of a voltage value to reactive power; and finally, establishing a voltage evaluation model according to the control target value, the voltage node set, the voltage of the target node, the reactive power regulating quantity and the sensitivity of the voltage value to the reactive power.
Specifically, the voltage evaluation model may be:
Figure BDA0002840161060000051
wherein, F 2 Is a notation of a voltage evaluation model, N U Is a set of voltage nodes; u shape k Is the kth target node voltage; u shape set Is a control target value of the voltage; delta Q is a reactive power regulating variable; c U The sensitivity of the target node voltage to reactive power.
In some optional embodiments of the present application, a joint control model is obtained according to the power factor evaluation model and the voltage evaluation model, where the joint control model is:
F 3 ＝w 1 F 1 +w 2 F 2
Figure BDA0002840161060000052
wherein, F 3 Is a notation of a joint control model, Q G Reactive power that is a reactive source; the subscripts max, min represent the upper and lower limits, respectively, where U max 、U min Upper and lower limits of the target node voltage, respectively; pf max 、pf min Respectively an upper limit value and a lower limit value of the power factor of the target transformer substation; w is a 1 And w 2 Weight coefficients, w, of the power factor evaluation model and the voltage evaluation model, respectively 1 And w 2 In [0, 1 ]]A value of m, and w 1 +w 2 ＝1。
Some examples of the present applicationIn the above embodiment, the control strategy may be generated based on a joint control model, and the control strategy may be: when the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, and the power factor is larger than the upper limit value of the power factor of the target transformer substation or smaller than the lower limit value of the power factor of the target transformer substation, setting w 1 And w 2 Are all 0.5; when only the power factor is larger than the upper limit value of the power factor of the target transformer substation or smaller than the lower limit value of the power factor of the target transformer substation, setting w 1 ＝1、w 2 0; when only the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, setting w 1 ＝0、w 2 ＝1。
Fig. 2 is a combined power factor and voltage regulator according to an embodiment of the present application, and as shown in fig. 2, the combined power factor and voltage regulator includes:
a first establishing module 40, configured to establish a power factor evaluation model, where the power factor evaluation model is used to calculate a minimum value of a deviation of a power factor;
a second establishing module 42, configured to establish a voltage evaluation model, where the voltage evaluation model is used to calculate a minimum value of the deviation of the voltage;
the determining module 44 is configured to obtain a combined control model according to the power factor evaluation model and the voltage evaluation model;
and a control module 46 configured to generate a control strategy based on the joint control model, wherein the control strategy is used for adjusting the power factor and the voltage.
In the combined regulating device of the power factor and the voltage, a first establishing module 40 is used for establishing a power factor evaluation model, and the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor; a second establishing module 42, configured to establish a voltage evaluation model, where the voltage evaluation model is used to calculate a minimum value of a deviation of the voltage; the determining module 44 is configured to obtain a combined control model according to the power factor evaluation model and the voltage evaluation model; the control module 46 is configured to generate a control strategy based on the joint control model, where the control strategy is used to adjust the power factor and the voltage, so as to achieve a technical effect of simultaneously considering both the power factor and the voltage during adjustment, and further solve a technical problem that the power factor or the voltage is not within a limit range due to the fact that the power factor and the voltage cannot be simultaneously considered during adjustment in the related art.
In some optional implementations of the present application, the power factor evaluation model may be established by: a control target value of the power factor of the transformer substation can be obtained; then determining a transformer substation set of the power factor to be controlled; then acquiring the power factor of a target transformer substation in the transformer substation set; and finally, establishing a power factor evaluation model according to the control target value, the transformer substation set, the power factor of the target transformer substation, the sensitivity of the power factor to the reactive power and the adjustment quantity of the reactive power.
Specifically, the power factor evaluation model may be:
Figure BDA0002840161060000061
wherein, F 1 Notation for power factor evaluation model, pf set The control target value of the power factor of the transformer substation; n is a radical of Q The control method comprises the steps that a substation set of power factors to be controlled is provided, wherein the substation set of the power factors to be controlled is a substation set smaller than a control target value of the power factors of the substations; pf (p) of k Is the power factor of the kth target substation; c Q Is the sensitivity of the power factor to reactive power; Δ Q is the amount of adjustment of the reactive power.
In some optional embodiments of the present application, the voltage evaluation model may be established by: a control target value of the voltage can be obtained; then determining a voltage node set of the voltage to be controlled; then acquiring the voltage of a target node in the voltage node set; obtaining reactive power regulating quantity and sensitivity of a voltage value to reactive power; and finally, establishing a voltage evaluation model according to the control target value, the voltage node set, the voltage of the target node, the reactive power regulating quantity and the sensitivity of the voltage value to the reactive power.
Specifically, the voltage evaluation model may be:
Figure BDA0002840161060000071
wherein, F 2 Is a notation of a voltage evaluation model, N U Is a set of voltage nodes; u shape k Is the kth target node voltage; u shape set Is a control target value of the voltage; delta Q is a reactive power regulating variable; c U The sensitivity of the target node voltage to reactive power.
In some optional embodiments of the present application, a joint control model is obtained according to the power factor evaluation model and the voltage evaluation model, where the joint control model is:
F 3 ＝w 1 F 1 +w 2 F 2
Figure BDA0002840161060000072
wherein, F 3 Is a notation of a joint control model, Q G Reactive power that is a reactive source; the subscripts max, min represent the upper and lower limits, respectively, where U max 、U min Upper and lower limits of the target node voltage, respectively; pf max 、pf min Respectively an upper limit value and a lower limit value of the power factor of the target transformer substation; w is a 1 And w 2 Weight coefficients, w, of the power factor evaluation model and the voltage evaluation model, respectively 1 And w 2 In [0, 1 ]]A value of m, and w 1 +w 2 ＝1。
Optionally, a control strategy may be generated based on the joint control model, and the control strategy may be: when the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, and the power factor is larger than the upper limit value of the power factor of the target transformer substation or smaller than the lower limit value of the power factor of the target transformer substation, setting w 1 And w 2 Are all 0.5; when only the power factor is greater than the upper limit value of the power factor of the target substation or less than the power factor of the target substationLower limit value of power factor, set w 1 ＝1、w 2 0; when only the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, setting w 1 ＝0、w 2 ＝1。
According to an aspect of the embodiments of the present application, there is also provided a non-volatile storage medium, which includes a stored program, wherein a device in which the non-volatile storage medium is controlled to perform any one of the methods of jointly adjusting the power factor and the voltage when the program runs.
Specifically, the storage medium stores program instructions for executing a function of establishing a power factor evaluation model for calculating a minimum value of a deviation of a power factor; establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage; obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; and generating a control strategy based on the joint control model, wherein the control strategy is used for regulating the power factor and the voltage.
There is also provided, in accordance with an aspect of an embodiment of the present application, a processor for executing a program stored in a memory, wherein the program is executed to perform any one of the methods of jointly adjusting power factor and voltage.
Specifically, the processor is configured to call a program instruction in the memory, and implement the following functions: establishing a power factor evaluation model, wherein the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor; establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage; obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model; and generating a control strategy based on the joint control model, wherein the control strategy is used for regulating the power factor and the voltage.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit 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 may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute 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 Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims (5)

1. A method for jointly adjusting power factor and voltage, comprising:
establishing a power factor evaluation model, wherein the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor;
establishing a voltage evaluation model, wherein the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage;
obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model;
generating a control strategy based on the joint control model, wherein the control strategy is used for adjusting the power factor and the voltage;
the establishing of the power factor evaluation model comprises the following steps: acquiring a control target value of a power factor of a transformer substation; determining a transformer substation set of power factors to be controlled; acquiring a power factor of a target substation in the substation set; establishing the power factor evaluation model according to the control target value, the transformer substation set, the power factor of the target transformer substation, the sensitivity of the power factor to reactive power and the regulating quantity of the reactive power;
wherein the power factor evaluation model is as follows:
Figure FDA0003706335140000011
wherein F1 is the power factorThe representation symbol of the number evaluation model, and pfset is a control target value of the substation power factor; NQ is a set of substations of the power factor to be controlled, wherein the set of substations of the power factor to be controlled is a set of substations smaller than a control target value of the substation power factor; pfk is the power factor of the kth target substation; CQ is the sensitivity of the power factor to reactive power; Δ Q is the amount of regulation of the reactive power;
wherein, establish voltage evaluation model, still include: acquiring a control target value of voltage; determining a set of voltage nodes of a voltage to be controlled; acquiring a target node voltage in the voltage node set; acquiring the adjustment quantity of reactive power and the sensitivity of the voltage value to the reactive power; and establishing the voltage evaluation model according to the control target value, the voltage node set, the voltage of the target node, the adjustment quantity of the reactive power and the sensitivity of the voltage value to the reactive power.
Wherein the voltage evaluation model is as follows:
Figure FDA0003706335140000012
wherein F2 is the expression symbol of the voltage evaluation model, NU is the voltage node set; uk is the kth target node voltage; uset is a control target value for the voltage; Δ Q is the amount of regulation of the reactive power; CU is the sensitivity of the target node voltage to the reactive power;
obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model, wherein the combined control model is as follows:
F 3 ＝w 1 F 1 +w 2 F 2
Figure FDA0003706335140000021
wherein, F 3 Is a representation of the joint control model, Q G Reactive power that is a reactive source; the subscripts max, min represent the upper and lower limits, respectively, where U max 、U min An upper limit value and a lower limit value of the target node voltage, respectively; pf max 、pf min Respectively an upper limit value and a lower limit value of the power factor of the target substation; w is a 1 And w 2 Weight coefficients, w, of the power factor evaluation model and the voltage evaluation model, respectively 1 And w 2 In [0, 1 ]]A value of m, and w 1 +w 2 ＝1。
2. The method of claim 1, wherein generating a control strategy based on the joint control model comprises:
when the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, and the power factor is larger than the upper limit value of the power factor of the target transformer substation or smaller than the lower limit value of the power factor of the target transformer substation, setting the w 1 And w 2 Are all 0.5;
when only the power factor is larger than the upper limit value of the power factor of the target substation or smaller than the lower limit value of the power factor of the target substation, setting the w 1 ＝1、w 2 ＝0；
When only the target node voltage is larger than the upper limit value of the target node voltage or smaller than the lower limit value of the target node voltage, setting the w 1 ＝0、w 2 ＝1。
3. A combined power factor and voltage regulator, comprising:
the first establishing module is used for establishing a power factor evaluation model, and the power factor evaluation model is used for calculating the minimum value of the deviation of the power factor;
the second establishing module is used for establishing a voltage evaluation model, and the voltage evaluation model is used for calculating the minimum value of the deviation of the voltage;
the determining module is used for obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model;
a control module configured to generate a control strategy based on the joint control model, wherein the control strategy is used to adjust the power factor and the voltage;
the method for establishing the power factor evaluation model comprises the following steps: acquiring a control target value of a power factor of a transformer substation; determining a transformer substation set of power factors to be controlled; acquiring a power factor of a target substation in the substation set; establishing the power factor evaluation model according to the control target value, the transformer substation set, the power factor of the target transformer substation, the sensitivity of the power factor to reactive power and the regulating quantity of the reactive power;
wherein the power factor evaluation model is as follows:
Figure FDA0003706335140000031
f1 is a representation symbol of the power factor evaluation model, and pfset is a control target value of the substation power factor; NQ is a set of substations of the power factor to be controlled, wherein the set of substations of the power factor to be controlled is a set of substations smaller than a control target value of the substation power factor; pfk is the power factor of the kth target substation; CQ is the sensitivity of the power factor to reactive power; Δ Q is the amount of regulation of the reactive power;
wherein, establish voltage evaluation model, still include: acquiring a control target value of voltage; determining a set of voltage nodes of a desired control voltage; acquiring a target node voltage in the voltage node set; acquiring the adjustment quantity of reactive power and the sensitivity of the voltage value to the reactive power; establishing the voltage evaluation model according to the control target value, the voltage node set, the voltage of the target node, the adjustment quantity of the reactive power and the sensitivity of the voltage value to the reactive power;
wherein the voltage evaluation model is as follows:
Figure FDA0003706335140000032
wherein F2 is the expression symbol of the voltage evaluation model, NU is the voltage node set; uk is the kth target node voltage; uset is a control target value for the voltage; Δ Q is the amount of regulation of the reactive power; CU is the sensitivity of the target node voltage to the reactive power.
Obtaining a combined control model according to the power factor evaluation model and the voltage evaluation model, wherein the combined control model is as follows:
F 3 ＝w 1 F 1 +w 2 F 2
Figure FDA0003706335140000033
wherein, F 3 Is a representation of the joint control model, Q G Reactive power that is a reactive source; the subscripts max, min represent the upper and lower limits, respectively, where U max 、U min An upper limit value and a lower limit value of the target node voltage, respectively; pf max 、pf min Respectively an upper limit value and a lower limit value of the power factor of the target substation; w is a 1 And w 2 Weight coefficients, w, of the power factor evaluation model and the voltage evaluation model, respectively 1 And w 2 In [0, 1 ]]A value of m, and w 1 +w 2 ＝1。
4. A non-volatile storage medium, comprising a stored program, wherein the program, when executed, controls a device in which the non-volatile storage medium is located to perform the method for jointly adjusting power factor and voltage according to any one of claims 1 to 2.
5. A processor for executing a program stored in a memory, wherein the program is configured to execute the method of jointly adjusting a power factor and a voltage according to any one of claims 1 to 2 when running.
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