Phase modifier excitation system and method

Abstract

The invention relates to the technical field of phase modifiers, and discloses a phase modifier excitation system and method, a signal acquisition module acquires a plurality of real-time operation signals of a phase modifier, and determines a plurality of real-time operation signal groups; the factor calculation module performs subgroup division on the real-time operation signal group to obtain a plurality of sub real-time operation signal groups, and calculates a real-time operation signal feedback factor; the excitation judgment module judges whether excitation intervention needs to be performed on the phase modifier based on the real-time operation signal feedback factor; when it is judged that excitation intervention needs to be conducted on the phase modifier, the current applying module collects the current exciting current of the phase modifier, regulates and controls the current exciting current according to the real-time operation signal feedback factor to obtain regulated and controlled exciting current, the regulated and controlled exciting current is applied to an exciting winding of the phase modifier, and accurate control over the exciting current is achieved; the dynamic response speed and precision of excitation control are improved, the anti-interference capability and reliability of the system under extreme working conditions are enhanced, and powerful support is provided for safe and stable operation of a power system.

Description

Technical Field

[0001] The present invention relates to the technical field of phase regulators, and in particular to a phase regulator excitation system and method. Background Art

[0002] With the continuous development of the power system, the phase regulator, as an important reactive power regulation device, plays a key role in maintaining the stability of the grid voltage and improving the dynamic response capability of the system. The core function of the phase regulator is to control the output of reactive power by adjusting its excitation current, thereby achieving precise regulation of the grid voltage.

[0003] Traditional phase-converter excitation methods mainly rely on static excitation systems or rotating excitation systems. Although these methods can meet the basic needs of the power grid to a certain extent, they still have certain limitations in response speed, control accuracy and system stability. Or they rely on advanced excitation control methods, which can achieve faster dynamic response and more accurate reactive power regulation by adopting high-frequency switching devices and digital control technology. However, when dealing with power grid faults or transient processes, there are still problems such as large excitation current fluctuations and insufficient system reliability. Especially under extreme conditions such as grid voltage sag or short circuit, traditional excitation methods are difficult to quickly restore system stability, which may cause grid voltage collapse or equipment damage. Summary of the invention

[0004] The embodiments of the present invention provide a phase-shifting excitation system and method, which can achieve precise control of the excitation current, improve the dynamic response speed and accuracy of the excitation control, and at the same time enhance the anti-interference ability and reliability of the system under extreme working conditions, thereby providing strong support for the safe and stable operation of the power system.

[0005] In order to achieve the above object, the present invention provides a phase regulator excitation system, comprising: A signal acquisition module, used for acquiring a plurality of real-time operation signals of the phase regulator based on a preset acquisition time point, analyzing the real-time operation signals, and determining a plurality of real-time operation signal groups; A factor calculation module, used for dividing the real-time operation signal group into sub-groups to obtain a plurality of sub-real-time operation signal groups, and calculating the real-time operation signal feedback factor of the real-time operation signal group according to all the sub-real-time operation signal groups; An excitation judgment module, used for judging whether it is necessary to perform excitation intervention on the phase regulator based on the relationship between the real-time operation signal feedback factor and the preset operation signal feedback factor; The current application module is used to collect the current excitation current of the phase regulator when it is determined that excitation intervention is needed for the phase regulator, regulate the current excitation current according to the real-time operation signal feedback factor, obtain the regulated excitation current of the phase regulator, and apply it to the excitation winding of the phase regulator.

[0006] Furthermore, the factor calculation module is used to: The factor calculation module is used to calculate the representative operation signal of all real-time operation signals in the real-time operation signal group; The factor calculation module is used to divide the real-time operation signal group into sub-groups according to the representative operation signal, and when the real-time operation signal in the real-time operation signal group is smaller than the representative operation signal, the corresponding real-time operation signal is divided into the first sub-real-time operation signal group; The factor calculation module is used for dividing the corresponding real-time operation signal into the second sub-real-time operation signal group when the real-time operation signal in the real-time operation signal group is greater than or equal to the representative operation signal; The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group based on the first sub-real-time operation signal group; The factor calculation module is used to calculate the second real-time operation signal feedback factor of the real-time operation signal group based on the second sub-real-time operation signal group; The factor calculation module is used to calculate the real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal feedback factor and the second real-time operation signal feedback factor.

[0007] Furthermore, the factor calculation module is used to: The factor calculation module is used to determine the low real-time operation signal and the high real-time operation signal corresponding to the first sub-real-time operation signal group; The factor calculation module is used to determine the low real-time operation signal corresponding to the first sub-real-time operation signal group according to the following formula: ; Wherein, q1 is the low real-time operation signal corresponding to the first sub-real-time operation signal group, w is the calculation factor, and the value range is [0.1, 0.5], and e is the mean value corresponding to the first sub-real-time operation signal group; The factor calculation module is used to determine the high real-time operation signal corresponding to the first sub-real-time operation signal group according to the following formula: ; Wherein, q1 is a high real-time operation signal corresponding to the first sub-real-time operation signal group; The factor calculation module is used to sort the real-time operation signals in the first sub-real-time operation signal group from small to large, and determine the minimum real-time operation signal and the maximum real-time operation signal; The factor calculation module is used to use the minimum real-time operation signal and the low real-time operation signal as a first operation signal interval; The factor calculation module is used to use the low real-time operation signal and the high real-time operation signal as a second operation signal interval; The factor calculation module is used to use the maximum real-time operation signal and the high real-time operation signal as a third operation signal interval; The factor calculation module is used to count the number of first real-time operation signals of the real-time operation signals in the first operation signal interval; The factor calculation module is used to count the number of second real-time operation signals of the real-time operation signals in the second operation signal interval; The factor calculation module is used to count the number of third real-time operation signals of the real-time operation signals in the third operation signal interval; The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal quantity, the second real-time operation signal quantity and the third real-time operation signal quantity.

[0008] Furthermore, the factor calculation module is used to: The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group according to the following formula: ; Wherein, r is the first real-time operation signal feedback factor of the real-time operation signal group, t is the number of real-time operation signals in the first sub-real-time operation signal group, u y is the yth real-time operation signal in the first sub-real-time operation signal group, p1 is the low real-time operation signal, p2 is the high real-time operation signal, s1 is the number of the first real-time operation signal, s2 is the number of the second real-time operation signal, and s3 is the number of the third real-time operation signal.

[0009] Furthermore, the factor calculation module is used to: The factor calculation module is used to perform curve fitting on the real-time operation signals in the second sub-real-time operation signal group based on the acquisition time sequence to obtain a real-time operation signal curve; The factor calculation module is used to determine the slope of the operation signal curve corresponding to each real-time operation signal on the real-time operation signal curve; The factor calculation module is used to randomly determine a slope of an operation signal curve, determine the Euclidean distances between the slopes of all remaining operation signal curves and the randomly determined slope of the operation signal curve, select the minimum Euclidean distance, and generate a Euclidean distance mark; The factor calculation module is used to randomly determine the slope of the remaining operation signal curve to obtain a plurality of Euclidean distance markers; The factor calculation module is used to extract the Euclidean distances corresponding to all Euclidean distance markers, and determine whether there are equal Euclidean distances. If so, calculate the equal Euclidean distances and values ​​of all equal Euclidean distances; The factor calculation module is used to calculate the unequal Euclidean distance sum values ​​of all remaining Euclidean distances, and determine the ratio of the equal Euclidean distance sum value to the unequal Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group; The factor calculation module is used for extracting the maximum Euclidean distance and the minimum Euclidean distance if no, and calculating the Euclidean distance extreme sum value of the maximum Euclidean distance and the minimum Euclidean distance; The factor calculation module is used to calculate the remaining Euclidean distance sum value of all remaining Euclidean distances, and determine the ratio of the Euclidean distance extreme sum value to the remaining Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group.

[0010] Furthermore, the factor calculation module is used to: The factor calculation module is used to configure a first calculation coefficient for the first real-time operation signal feedback factor and a second calculation coefficient for the second real-time operation signal feedback factor; The factor calculation module is used to calculate the real-time operation signal feedback factor of the real-time operation signal group according to the following formula: ; Among them, d is the real-time operation signal feedback factor of the real-time operation signal group, f1 is the first calculation coefficient, f2 is the second calculation coefficient, and a is the second real-time operation signal feedback factor.

[0011] Furthermore, the excitation judgment module is used to: The excitation judgment module is used to judge that it is not necessary to perform excitation intervention on the phase regulator when the real-time operation signal feedback factor is less than the preset operation signal feedback factor; The excitation judgment module is used to judge that excitation intervention of the phase regulator is required when the real-time operation signal feedback factor is greater than or equal to the preset operation signal feedback factor.

[0012] Furthermore, the current applying module is used for: The current applying module is used to calculate the real-time operation signal feedback factor difference between the real-time operation signal feedback factor and the preset real-time operation signal feedback factor; The current application module is used to preset a first preset real-time operation signal feedback factor difference and a second preset real-time operation signal feedback factor difference; The current application module is used to preset a first preset excitation current control parameter, a second preset excitation current control parameter and a third preset excitation current control parameter; The current application module is used to calculate a first product value of the first preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is less than the first preset real-time operation signal feedback factor difference; The current application module is used to calculate the second product value of the second preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is greater than or equal to the first preset real-time operation signal feedback factor difference and less than the second preset real-time operation signal feedback factor difference; The current application module is used to calculate the third product value of the third preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is greater than or equal to the second preset real-time operation signal feedback factor difference.

[0013] In order to achieve the above object, the present invention also provides a phase regulator excitation method, comprising: Collecting multiple real-time operation signals of the phase regulator based on preset collection time points, analyzing the real-time operation signals, and determining multiple real-time operation signal groups; Dividing the real-time operation signal group into sub-groups to obtain a plurality of sub-real-time operation signal groups, and calculating a real-time operation signal feedback factor of the real-time operation signal group according to all the sub-real-time operation signal groups; Based on the relationship between the real-time operation signal feedback factor and the preset operation signal feedback factor, determining whether it is necessary to perform excitation intervention on the phase regulator; When it is determined that excitation intervention is required for the phase regulator, the current excitation current of the phase regulator is collected, and the current excitation current is regulated according to the real-time operation signal feedback factor to obtain the regulated excitation current of the phase regulator, and the regulated excitation current is applied to the excitation winding of the phase regulator.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a phase regulator excitation system and method, wherein a signal acquisition module acquires multiple real-time operation signals of the phase regulator and determines multiple real-time operation signal groups; a factor calculation module divides the real-time operation signal groups into sub-groups to obtain multiple sub-real-time operation signal groups, and calculates real-time operation signal feedback factors; an excitation judgment module judges whether it is necessary to perform excitation intervention on the phase regulator based on the real-time operation signal feedback factors; when the current application module judges that it is necessary to perform excitation intervention on the phase regulator, the current excitation current of the phase regulator is acquired, and the current excitation current is regulated according to the real-time operation signal feedback factors to obtain the regulated excitation current, and the regulated excitation current is applied to the excitation winding of the phase regulator, so as to realize precise control of the excitation current, improve the dynamic response speed and accuracy of the excitation control, and at the same time enhance the anti-interference ability and reliability of the system under extreme working conditions, thereby providing strong support for the safe and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A schematic structural diagram of a phase modulator excitation system in an embodiment of the present invention is shown; Figure 2 A schematic flow chart of a phase modulator excitation method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0019] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0021] like Figure 1 As shown, an embodiment of the present invention discloses a phase modulator excitation system, comprising: A signal acquisition module, used for acquiring a plurality of real-time operation signals of the phase regulator based on a preset acquisition time point, analyzing the real-time operation signals, and determining a plurality of real-time operation signal groups; A factor calculation module, used for dividing the real-time operation signal group into sub-groups to obtain a plurality of sub-real-time operation signal groups, and calculating the real-time operation signal feedback factor of the real-time operation signal group according to all the sub-real-time operation signal groups; An excitation judgment module, used for judging whether it is necessary to perform excitation intervention on the phase regulator based on the relationship between the real-time operation signal feedback factor and the preset operation signal feedback factor; The current application module is used to collect the current excitation current of the phase regulator when it is determined that excitation intervention is needed for the phase regulator, regulate the current excitation current according to the real-time operation signal feedback factor, obtain the regulated excitation current of the phase regulator, and apply it to the excitation winding of the phase regulator.

[0022] In this embodiment, the preset collection time point is pre-set, such as the 1st second, the 2nd second, the 3rd second, etc., and can be set according to actual needs. Each preset collection time point can collect multiple real-time operation signals.

[0023] In this embodiment, the real-time operation signal includes a voltage signal, a current signal, a vibration signal, a rotation speed signal, etc., which are not shown one by one here.

[0024] In this embodiment, the voltage signal corresponding to each preset acquisition time point is divided into a real-time operation signal group, and the current signal corresponding to each preset acquisition time point is divided into a real-time operation signal group, and the rest are not shown one by one.

[0025] The beneficial effects of the above technical solution are: the present invention realizes precise control of the excitation current, improves the dynamic response speed and accuracy of the excitation control, and at the same time enhances the anti-interference ability and reliability of the system under extreme working conditions, providing strong support for the safe and stable operation of the power system.

[0026] In some embodiments of the present application, the factor calculation module is used to: The factor calculation module is used to calculate the representative operation signal of all real-time operation signals in the real-time operation signal group; The factor calculation module is used to divide the real-time operation signal group into sub-groups according to the representative operation signal, and when the real-time operation signal in the real-time operation signal group is smaller than the representative operation signal, the corresponding real-time operation signal is divided into the first sub-real-time operation signal group; The factor calculation module is used for dividing the corresponding real-time operation signal into the second sub-real-time operation signal group when the real-time operation signal in the real-time operation signal group is greater than or equal to the representative operation signal; The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group based on the first sub-real-time operation signal group; The factor calculation module is used to calculate the second real-time operation signal feedback factor of the real-time operation signal group based on the second sub-real-time operation signal group; The factor calculation module is used to calculate the real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal feedback factor and the second real-time operation signal feedback factor.

[0027] In this embodiment, the representative operation signal refers to the average value of all real-time operation signals.

[0028] In some embodiments of the present application, the factor calculation module is used to: The factor calculation module is used to determine the low real-time operation signal and the high real-time operation signal corresponding to the first sub-real-time operation signal group; The factor calculation module is used to determine the low real-time operation signal corresponding to the first sub-real-time operation signal group according to the following formula: ; Wherein, q1 is the low real-time operation signal corresponding to the first sub-real-time operation signal group, w is the calculation factor, and the value range is [0.1, 0.5], and e is the mean value corresponding to the first sub-real-time operation signal group; The factor calculation module is used to determine the high real-time operation signal corresponding to the first sub-real-time operation signal group according to the following formula: ; Wherein, q1 is a high real-time operation signal corresponding to the first sub-real-time operation signal group; The factor calculation module is used to sort the real-time operation signals in the first sub-real-time operation signal group from small to large, and determine the minimum real-time operation signal and the maximum real-time operation signal; The factor calculation module is used to use the minimum real-time operation signal and the low real-time operation signal as a first operation signal interval; The factor calculation module is used to use the low real-time operation signal and the high real-time operation signal as a second operation signal interval; The factor calculation module is used to use the maximum real-time operation signal and the high real-time operation signal as a third operation signal interval; The factor calculation module is used to count the number of first real-time operation signals of the real-time operation signals in the first operation signal interval; The factor calculation module is used to count the number of second real-time operation signals of the real-time operation signals in the second operation signal interval; The factor calculation module is used to count the number of third real-time operation signals of the real-time operation signals in the third operation signal interval; The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal quantity, the second real-time operation signal quantity and the third real-time operation signal quantity.

[0029] In this embodiment, the first operation signal interval does not include a low real-time operation signal, the second operation signal interval does not include a low real-time operation signal and a high real-time operation signal, and the third operation signal interval does not include a high real-time operation signal.

[0030] The beneficial effects of the above technical solution are: the present invention determines low real-time operation signals and high real-time operation signals, facilitates the division of real-time operation signals, and calculates the first real-time operation signal feedback factor of the real-time operation signal group according to the number of first real-time operation signals, the number of second real-time operation signals and the number of third real-time operation signals, thereby ensuring the calculation accuracy of the first real-time operation signal feedback factor and laying the foundation for the calculation of the real-time operation signal feedback factor.

[0031] In some embodiments of the present application, the factor calculation module is used to: The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group according to the following formula: ; Wherein, r is the first real-time operation signal feedback factor of the real-time operation signal group, t is the number of real-time operation signals in the first sub-real-time operation signal group, u yis the yth real-time operation signal in the first sub-real-time operation signal group, p1 is the low real-time operation signal, p2 is the high real-time operation signal, s1 is the number of the first real-time operation signal, s2 is the number of the second real-time operation signal, and s3 is the number of the third real-time operation signal.

[0032] In some embodiments of the present application, the factor calculation module is used to: The factor calculation module is used to perform curve fitting on the real-time operation signals in the second sub-real-time operation signal group based on the acquisition time sequence to obtain a real-time operation signal curve; The factor calculation module is used to determine the slope of the operation signal curve corresponding to each real-time operation signal on the real-time operation signal curve; The factor calculation module is used to randomly determine a slope of an operation signal curve, determine the Euclidean distances between the slopes of all remaining operation signal curves and the randomly determined slope of the operation signal curve, select the minimum Euclidean distance, and generate a Euclidean distance mark; The factor calculation module is used to randomly determine the slope of the remaining operation signal curve to obtain a plurality of Euclidean distance markers; The factor calculation module is used to extract the Euclidean distances corresponding to all Euclidean distance markers, and determine whether there are equal Euclidean distances. If so, calculate the equal Euclidean distances and values ​​of all equal Euclidean distances; The factor calculation module is used to calculate the unequal Euclidean distance sum values ​​of all remaining Euclidean distances, and determine the ratio of the equal Euclidean distance sum value to the unequal Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group; The factor calculation module is used for extracting the maximum Euclidean distance and the minimum Euclidean distance if no, and calculating the Euclidean distance extreme sum value of the maximum Euclidean distance and the minimum Euclidean distance; The factor calculation module is used to calculate the remaining Euclidean distance sum value of all remaining Euclidean distances, and determine the ratio of the Euclidean distance extreme sum value to the remaining Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group.

[0033] In this embodiment, the horizontal coordinates of the real-time operation signal curve are 1, 2, 3, ..., m, where m is the number of real-time operation signals, and the curve fitting is performed in combination with the acquisition time sequence.

[0034] In this embodiment, the method for determining the Euclidean distance will not be described in detail.

[0035] The beneficial effect of the above technical solution is that the present invention determines the ratio of the equal Euclidean distance sum value to the unequal Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group; or determines the ratio of the extreme Euclidean distance sum value to the remaining Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group. Two calculation methods of the second real-time operation signal feedback factor are provided, which ensures the calculation accuracy of the second real-time operation signal feedback factor and further lays a foundation for calculating the real-time operation signal feedback factor.

[0036] In some embodiments of the present application, the factor calculation module is used to: The factor calculation module is used to configure a first calculation coefficient for the first real-time operation signal feedback factor and a second calculation coefficient for the second real-time operation signal feedback factor; The factor calculation module is used to calculate the real-time operation signal feedback factor of the real-time operation signal group according to the following formula: ; Among them, d is the real-time operation signal feedback factor of the real-time operation signal group, f1 is the first calculation coefficient, f2 is the second calculation coefficient, and a is the second real-time operation signal feedback factor.

[0037] In this embodiment, f1>0, f2>0.

[0038] The beneficial effect of the above technical solution is: the present invention calculates the real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal feedback factor and the second real-time operation signal feedback factor, without the need for human participation in the calculation, thereby ensuring the accuracy and calculation efficiency of the real-time operation signal feedback factor, and providing the real-time operation signal feedback factor can reflect the operating status of the phase regulator and provide a reliable data basis for excitation access.

[0039] In some embodiments of the present application, the excitation judgment module is used to: The excitation judgment module is used to judge that it is not necessary to perform excitation intervention on the phase regulator when the real-time operation signal feedback factor is less than the preset operation signal feedback factor; The excitation judgment module is used to judge that excitation intervention of the phase regulator is required when the real-time operation signal feedback factor is greater than or equal to the preset operation signal feedback factor.

[0040] In this embodiment, the preset operation signal feedback factor is preferably 6, and can be adjusted according to actual conditions.

[0041] The beneficial effect of the above technical solution is that the present invention can accurately judge whether it is necessary to perform excitation intervention on the phase shifter according to the real-time operation signal feedback factor and the preset operation signal feedback factor, thereby ensuring the judgment accuracy and judgment efficiency, eliminating the need for human participation in the judgment, and reducing the judgment error.

[0042] In some embodiments of the present application, the current applying module is used to: The current applying module is used to calculate the real-time operation signal feedback factor difference between the real-time operation signal feedback factor and the preset real-time operation signal feedback factor; The current application module is used to preset a first preset real-time operation signal feedback factor difference and a second preset real-time operation signal feedback factor difference; The current application module is used to preset a first preset excitation current control parameter, a second preset excitation current control parameter and a third preset excitation current control parameter; The current application module is used to calculate a first product value of the first preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is less than the first preset real-time operation signal feedback factor difference; The current application module is used to calculate the second product value of the second preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is greater than or equal to the first preset real-time operation signal feedback factor difference and less than the second preset real-time operation signal feedback factor difference; The current application module is used to calculate the third product value of the third preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is greater than or equal to the second preset real-time operation signal feedback factor difference.

[0043] In this embodiment, the first preset real-time operation signal feedback factor difference is smaller than the second preset real-time operation signal feedback factor difference. Here, the first preset real-time operation signal feedback factor difference is preferably 2, and the second preset real-time operation signal feedback factor difference is preferably 4. The specific difference can also be adjusted according to actual conditions.

[0044] In this embodiment, the first preset excitation current control parameter is less than the second preset excitation current control parameter, which is less than the third preset excitation current control parameter. The first preset excitation current control parameter is preferably 0.95, the second preset excitation current control parameter is preferably 1.05, and the third preset excitation current control parameter is preferably 1.1. The specific parameters can also be adjusted according to actual conditions.

[0045] The beneficial effect of the above technical solution is: the present invention selects the corresponding preset excitation current control parameters according to the relationship between the real-time operation signal feedback factor difference, the first preset real-time operation signal feedback factor difference and the second preset real-time operation signal feedback factor difference, obtains the regulated excitation current, realizes precise control of the excitation current, improves the dynamic response speed and accuracy of the excitation control, and at the same time enhances the anti-interference ability and reliability of the system under extreme working conditions, provides strong support for the safe and stable operation of the power system, and can achieve faster dynamic response and more precise reactive power regulation.

[0046] In order to further explain the technical idea of ​​the present invention, the technical solution of the present invention is now described in combination with specific application scenarios.

[0047] Correspondingly, such as Figure 2 As shown, the present application also provides a phase regulator excitation method, comprising: S110: collecting a plurality of real-time operation signals of the phase regulator based on a preset collection time point, analyzing the real-time operation signals, and determining a plurality of real-time operation signal groups; S120: Divide the real-time operation signal group into sub-groups to obtain a plurality of sub-real-time operation signal groups, and calculate the real-time operation signal feedback factor of the real-time operation signal group according to all the sub-real-time operation signal groups; S130: judging whether it is necessary to perform excitation intervention on the phase regulator based on the relationship between the real-time operation signal feedback factor and the preset operation signal feedback factor; S140: When it is determined that excitation intervention is required for the phase regulator, the current excitation current of the phase regulator is collected, the current excitation current is regulated according to the real-time operation signal feedback factor, the regulated excitation current of the phase regulator is obtained, and the regulated excitation current is applied to the excitation winding of the phase regulator.

[0048] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0049] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not fully described in this specification is only for the sake of omitting space and saving resources.

[0050] Those skilled in the art can understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A phase condenser excitation system, characterized in that: include: A signal acquisition module, used for acquiring a plurality of real-time operation signals of the phase regulator based on a preset acquisition time point, analyzing the real-time operation signals, and determining a plurality of real-time operation signal groups; A factor calculation module, used for dividing the real-time operation signal group into sub-groups to obtain a plurality of sub-real-time operation signal groups, and calculating the real-time operation signal feedback factor of the real-time operation signal group according to all the sub-real-time operation signal groups; An excitation judgment module, used for judging whether it is necessary to perform excitation intervention on the phase regulator based on the relationship between the real-time operation signal feedback factor and the preset operation signal feedback factor; The current application module is used to collect the current excitation current of the phase regulator when it is determined that excitation intervention is needed for the phase regulator, regulate the current excitation current according to the real-time operation signal feedback factor, obtain the regulated excitation current of the phase regulator, and apply it to the excitation winding of the phase regulator.

2. The phase modulator excitation system according to claim 1, characterized in that: The factor calculation module is used for: The factor calculation module is used to calculate the representative operation signal of all real-time operation signals in the real-time operation signal group; The factor calculation module is used to divide the real-time operation signal group into sub-groups according to the representative operation signal, and when the real-time operation signal in the real-time operation signal group is smaller than the representative operation signal, the corresponding real-time operation signal is divided into the first sub-real-time operation signal group; The factor calculation module is used for dividing the corresponding real-time operation signal into the second sub-real-time operation signal group when the real-time operation signal in the real-time operation signal group is greater than or equal to the representative operation signal; The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group based on the first sub-real-time operation signal group; The factor calculation module is used to calculate the second real-time operation signal feedback factor of the real-time operation signal group based on the second sub-real-time operation signal group; The factor calculation module is used to calculate the real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal feedback factor and the second real-time operation signal feedback factor.

3. The phase modulator excitation system according to claim 2, characterized in that: The factor calculation module is used for: The factor calculation module is used to determine the low real-time operation signal and the high real-time operation signal corresponding to the first sub-real-time operation signal group; The factor calculation module is used to determine the low real-time operation signal corresponding to the first sub-real-time operation signal group according to the following formula: ； Wherein, q1 is the low real-time operation signal corresponding to the first sub-real-time operation signal group, w is the calculation factor, and the value range is [0.1, 0.5], and e is the mean value corresponding to the first sub-real-time operation signal group; The factor calculation module is used to determine the high real-time operation signal corresponding to the first sub-real-time operation signal group according to the following formula: ； Wherein, q1 is a high real-time operation signal corresponding to the first sub-real-time operation signal group; The factor calculation module is used to sort the real-time operation signals in the first sub-real-time operation signal group from small to large, and determine the minimum real-time operation signal and the maximum real-time operation signal; The factor calculation module is used to use the minimum real-time operation signal and the low real-time operation signal as a first operation signal interval; The factor calculation module is used to use the low real-time operation signal and the high real-time operation signal as a second operation signal interval; The factor calculation module is used to use the maximum real-time operation signal and the high real-time operation signal as a third operation signal interval; The factor calculation module is used to count the number of first real-time operation signals of the real-time operation signals in the first operation signal interval; The factor calculation module is used to count the number of second real-time operation signals of the real-time operation signals in the second operation signal interval; The factor calculation module is used to count the number of third real-time operation signals of the real-time operation signals in the third operation signal interval; The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group according to the first real-time operation signal quantity, the second real-time operation signal quantity and the third real-time operation signal quantity.

4. The phase modulator excitation system according to claim 3, characterized in that: The factor calculation module is used for: The factor calculation module is used to calculate the first real-time operation signal feedback factor of the real-time operation signal group according to the following formula: ； Wherein, r is the first real-time operation signal feedback factor of the real-time operation signal group, t is the number of real-time operation signals in the first sub-real-time operation signal group, u y is the yth real-time operation signal in the first sub-real-time operation signal group, p1 is the low real-time operation signal, p2 is the high real-time operation signal, s1 is the number of the first real-time operation signal, s2 is the number of the second real-time operation signal, and s3 is the number of the third real-time operation signal.

5. The phase modulator excitation system according to claim 4, characterized in that: The factor calculation module is used for: The factor calculation module is used to perform curve fitting on the real-time operation signals in the second sub-real-time operation signal group based on the acquisition time sequence to obtain a real-time operation signal curve; The factor calculation module is used to determine the slope of the operation signal curve corresponding to each real-time operation signal on the real-time operation signal curve; The factor calculation module is used to randomly determine a slope of an operation signal curve, determine the Euclidean distances between the slopes of all remaining operation signal curves and the randomly determined slope of the operation signal curve, select the minimum Euclidean distance, and generate a Euclidean distance mark; The factor calculation module is used to randomly determine the slope of the remaining operation signal curve to obtain a plurality of Euclidean distance markers; The factor calculation module is used to extract the Euclidean distances corresponding to all Euclidean distance markers, and determine whether there are equal Euclidean distances. If so, calculate the equal Euclidean distances and values ​​of all equal Euclidean distances; The factor calculation module is used to calculate the unequal Euclidean distance sum values ​​of all remaining Euclidean distances, and determine the ratio of the equal Euclidean distance sum value to the unequal Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group; The factor calculation module is used for extracting the maximum Euclidean distance and the minimum Euclidean distance if no, and calculating the Euclidean distance extreme sum value of the maximum Euclidean distance and the minimum Euclidean distance; The factor calculation module is used to calculate the remaining Euclidean distance sum value of all remaining Euclidean distances, and determine the ratio of the Euclidean distance extreme sum value to the remaining Euclidean distance sum value as the second real-time operation signal feedback factor of the real-time operation signal group.

6. The phase modulator excitation system according to claim 5, characterized in that: The factor calculation module is used for: The factor calculation module is used to configure a first calculation coefficient for the first real-time operation signal feedback factor and a second calculation coefficient for the second real-time operation signal feedback factor; The factor calculation module is used to calculate the real-time operation signal feedback factor of the real-time operation signal group according to the following formula: ； Among them, d is the real-time operation signal feedback factor of the real-time operation signal group, f1 is the first calculation coefficient, f2 is the second calculation coefficient, and a is the second real-time operation signal feedback factor.

7. The phase modulator excitation system according to claim 1, characterized in that: The excitation judgment module is used for: The excitation judgment module is used to judge that it is not necessary to perform excitation intervention on the phase regulator when the real-time operation signal feedback factor is less than the preset operation signal feedback factor; The excitation judgment module is used to judge that excitation intervention of the phase regulator is required when the real-time operation signal feedback factor is greater than or equal to the preset operation signal feedback factor.

8. The phase modulator excitation system according to claim 1, characterized in that: The current applying module is used for: The current applying module is used to calculate the real-time operation signal feedback factor difference between the real-time operation signal feedback factor and the preset real-time operation signal feedback factor; The current application module is used to preset a first preset real-time operation signal feedback factor difference and a second preset real-time operation signal feedback factor difference; The current application module is used to preset a first preset excitation current control parameter, a second preset excitation current control parameter and a third preset excitation current control parameter; The current application module is used to calculate a first product value of the first preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is less than the first preset real-time operation signal feedback factor difference; The current application module is used to calculate the second product value of the second preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is greater than or equal to the first preset real-time operation signal feedback factor difference and less than the second preset real-time operation signal feedback factor difference; The current application module is used to calculate the third product value of the third preset excitation current control parameter and the current excitation current as the control excitation current of the phase regulator when the real-time operation signal feedback factor difference is greater than or equal to the second preset real-time operation signal feedback factor difference.

9. A phase condenser excitation method, applied to the phase condenser excitation system according to any one of claims 1 to 8, characterized in that: include: Collecting multiple real-time operation signals of the phase regulator based on preset collection time points, analyzing the real-time operation signals, and determining multiple real-time operation signal groups; Dividing the real-time operation signal group into sub-groups to obtain a plurality of sub-real-time operation signal groups, and calculating a real-time operation signal feedback factor of the real-time operation signal group according to all the sub-real-time operation signal groups; Based on the relationship between the real-time operation signal feedback factor and the preset operation signal feedback factor, determining whether it is necessary to perform excitation intervention on the phase regulator; When it is determined that excitation intervention is required for the phase regulator, the current excitation current of the phase regulator is collected, and the current excitation current is regulated according to the real-time operation signal feedback factor to obtain the regulated excitation current of the phase regulator, and the regulated excitation current is applied to the excitation winding of the phase regulator.

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